CN219021905U - Device for injecting viscoelastic agent into suprachoroidal space - Google Patents
Device for injecting viscoelastic agent into suprachoroidal space Download PDFInfo
- Publication number
- CN219021905U CN219021905U CN202222350303.9U CN202222350303U CN219021905U CN 219021905 U CN219021905 U CN 219021905U CN 202222350303 U CN202222350303 U CN 202222350303U CN 219021905 U CN219021905 U CN 219021905U
- Authority
- CN
- China
- Prior art keywords
- injection head
- spherical
- needle tube
- suprachoroidal space
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to a device for injecting a viscoelastic agent into a suprachoroidal space in the field of ophthalmic surgical instruments, which comprises a needle tube joint, wherein the front end of the needle tube joint is connected with a spherical injection head, a spherical inner cavity is arranged in the spherical injection head, the spherical injection head is connected with the needle tube joint through a transition neck, the transition neck is communicated with the needle tube joint and the inner cavity of the spherical injection head, and a plurality of injection holes are formed in the spherical injection head. The device is characterized in that the needle tube joint is used for connecting a push injection needle tube filled with a viscoelastic agent, and the constriction design between the spherical injection head and the transitional neck can form a tightening effect at the incision part after the head enters the suprachoroidal space through the surgical incision so as to prevent the head from falling out of the suprachoroidal space; meanwhile, the spherical injection head is provided with a plurality of liquid outlet holes, the liquid outlet part has no sharp structure of a conventional needle head, so that the choroid can be protected from being damaged while the choroid is pushed away, and the viscoelastic agent is uniformly injected to the periphery through dispersed multiple holes, so that the rapid, safe and rapid operation process is determined.
Description
Technical Field
The utility model relates to the field of ophthalmic surgical instruments, in particular to a device for injecting viscoelastic agent into suprachoroidal space.
Background
In the retinal hole sealing operation, a viscoelastic agent is injected into the suprachoroidal space of the corresponding area of the retinal hole through suprachoroidal space pressurization operation to form a raised pressurizing ridge, so that the retina around the retinal hole is tightly attached to the choroid, and the purpose of sealing the retinal hole is achieved. Clinical studies at home and abroad have proved that the suprachoroidal space pressurization operation is safe and effective for treating simple porosely-derived retinal detachment.
However, in the prior art, there is no special surgical tool for injecting viscoelastic agent into the corresponding part of the retinal hole in the suprachoroidal compression operation, and when the injection is directly performed by the injector under pressure, the impact and the uncertainty of the injection depth exist in the eye, which has a certain influence on the surgical effect.
Disclosure of Invention
The needle of the utility model has no special viscoelastic injection device for suprachoroidal space pressurization in the prior art, has certain difficulty or risk for both surgeons and patients, and provides a device for injecting viscoelastic into the suprachoroidal space, so as to reduce the implementation difficulty of the surgery, simplify the operation process and improve the healing effect of the surgery.
The device for injecting the viscoelastic agent into the suprachoroidal space comprises a needle tube joint and is characterized in that the front end of the needle tube joint is connected with a spherical injection head, a spherical inner cavity is formed in the spherical injection head, the spherical injection head is connected with the needle tube joint through a transition neck, the transition neck is communicated with the needle tube joint and the inner cavity of the spherical injection head, and a plurality of injection holes are formed in the spherical injection head.
According to the device for injecting the viscoelastic agent into the suprachoroidal space, the needle tube connector is connected with the injection needle tube filled with the viscoelastic agent during operation, the spherical injection head is stretched into a pre-made scleral incision, and the necking design of the transitional neck can form a necking effect at the incision part of the sclera after the head enters the suprachoroidal space, so that the head is prevented from falling out of the suprachoroidal space; meanwhile, the spherical injection head is provided with a plurality of liquid outlet holes, the liquid outlet part is free of a sharp structure of a conventional needle head, so that the choroid can be protected from being damaged while the choroid is pushed away, and the viscoelastic agent can be uniformly injected into the periphery through the plurality of liquid outlet holes in a scattered design, so that the direction limitation is avoided or the viscoelastic agent is excessively concentrated at a certain liquid outlet point, the safety of operation is ensured, and the operation difficulty is reduced.
Further, the transition neck is a hollow tube having a diameter smaller than the diameter of the spherical injection head.
Further, a liquid outlet hole is formed in the spherical top of the spherical injection head far away from the transition neck, and 3-6 liquid outlet holes are uniformly formed in the circumferential direction of the equatorial portion of the spherical injection head.
Still further preferably, the transition neck has an inner diameter of 0.75 to 1.0mm and a length of 0.5 to 1.0 mm.
Still more preferably, the spherical injection head has an outer diameter of 1.5-2.0. 2.0 mm and the liquid outlet hole has a diameter of 0.25-0.30 mm.
Drawings
Fig. 1 is a schematic view of the structure of the device for injecting viscoelastic agent into suprachoroidal space of the present utility model.
Wherein 1 is a needle tube joint; 2 a transition neck; 3 spherical injection head; 4, a liquid outlet hole.
Description of the embodiments
As shown in figure 1, the device for injecting the viscoelastic agent into the suprachoroidal space comprises a needle tube joint 1, wherein the front end of the needle tube joint 1 is connected with a spherical injection head 3, a spherical inner cavity is arranged in the spherical injection head 3, the spherical injection head 3 is connected with the needle tube joint 1 through a transition neck 2, the transition neck 2 is communicated with the needle tube joint 1 and the inner cavity of the spherical injection head 3, and a plurality of injection holes 4 are formed in the spherical injection head 3.
In the specific structure of the device for injecting viscoelastic agent into suprachoroidal space in this embodiment, the transition neck 2 is a hollow tube with a diameter smaller than that of the spherical injection head 3; the distribution mode of the liquid outlet holes on the spherical injection head 3 is as follows: the spherical injection head 3 is provided with a liquid outlet 4 on the spherical top far away from the transition neck 2, 3 to 6 liquid outlet holes are uniformly formed in the circumferential direction of the equatorial part of the spherical injection head 3, 4 liquid outlet holes are formed in the figure 1 of the embodiment, and 5 liquid outlet holes are formed in the top in a scattered manner for injecting liquid; the inner diameter of the transition neck 2 is 0.75-1.0 mm, and the length is 0.5-1.0 mm; the outer diameter of the spherical injection head 3 is 1.5-2.0 mm, and the diameter of the liquid outlet hole 4 is 0.25-0.30 mm.
In the device for injecting the viscoelastic agent into the suprachoroidal space, when the operation is performed, firstly, a marker pen is used for marking the scleral surface by means of the binocular indirect ophthalmoscope; under a surgical microscope, a 1.5mm scleral full-thickness incision was made at the site of the mark to expose the choroid. The needle tube joint of the device of the embodiment is connected with a viscoelastic agent pushing needle tube, the spherical injection head 3 is aligned with and stretches into the full-layer incision of the sclera, the ball head part is fully inserted into the rear incision and is tightened with the through Jiang Du neck 2, the viscoelastic agent is slowly pushed into the suprachoroidal space, the formation state of the choroidal pressurized ridge is observed under the binocular indirect ophthalmoscope, the viscoelastic agent is stopped after the retina split hole is completely sealed, the scleral incision is closed, finally the retina split hole is subjected to photocoagulation under the assistance of the binocular indirect ophthalmoscope, the spherical injection head is withdrawn, the incision sealing is completed, and the operation is finished.
The device for injecting the viscoelastic agent into the suprachoroidal space has the advantages that the spherical injection head structure and the necking design of the transition neck 2 can form a tightening effect at the incision part of the whole sclera after the head enters the suprachoroidal space, so that the head is prevented from falling out of the suprachoroidal space; meanwhile, the spherical injection head is provided with the plurality of liquid outlet holes which extend into eyes to protect choroids from being damaged, and the plurality of liquid outlet holes which are designed in a dispersing way can evenly inject viscoelastic agent to the periphery, so that the viscoelastic agent is not limited by directions or is excessively concentrated at a certain liquid outlet point, and the safe and rapid operation process is realized.
Claims (5)
1. The device for injecting the viscoelastic agent into the suprachoroidal space comprises a needle tube joint, and is characterized in that the front end of the needle tube joint is connected with a spherical injection head, a spherical inner cavity is formed in the spherical injection head, the spherical injection head is connected with the needle tube joint through a transition neck, the transition neck is communicated with the needle tube joint and the inner cavity of the spherical injection head, and a plurality of injection holes are formed in the spherical injection head.
2. The device for injecting a viscoelastic agent into a suprachoroidal space according to claim 1, wherein said transition neck is a hollow tube having a diameter smaller than that of a spherical injection head.
3. The device for injecting a viscoelastic agent into a suprachoroidal space according to claim 1, wherein said spherical injection head has a plurality of holes on the dome distal from said transition neck, said spherical injection head having 3 to 6 holes circumferentially distributed around the equatorial portion.
4. The device for injecting a viscoelastic agent into a suprachoroidal space according to claim 1, wherein said transition neck has an inner diameter of 0.75-1.0 mm and a length of 0.5-1.0 mm.
5. A device for injecting a viscoelastic agent into a suprachoroidal space according to claim 3, wherein said spherical injection head has an outer diameter of 1.5-2.0 mm and said exit orifice has a diameter of 0.25-0.30 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222350303.9U CN219021905U (en) | 2022-09-05 | 2022-09-05 | Device for injecting viscoelastic agent into suprachoroidal space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222350303.9U CN219021905U (en) | 2022-09-05 | 2022-09-05 | Device for injecting viscoelastic agent into suprachoroidal space |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219021905U true CN219021905U (en) | 2023-05-16 |
Family
ID=86283501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222350303.9U Active CN219021905U (en) | 2022-09-05 | 2022-09-05 | Device for injecting viscoelastic agent into suprachoroidal space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219021905U (en) |
-
2022
- 2022-09-05 CN CN202222350303.9U patent/CN219021905U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11273238B2 (en) | Cannula for external drainage of subretinal fluid | |
| US5487725A (en) | Pneumatic vitrectomy for retinal attachment | |
| US5547473A (en) | Pneumatic vitrectomy for retinal attachment | |
| CA2703280C (en) | Ocular implant delivery system | |
| US9707128B2 (en) | Method and apparatus for reducing intraocular pressure of an eye | |
| WO2002032343A3 (en) | C-shaped cross section tubular ophthalmic implant for reduction of intraocular pressure and method of use | |
| US5286261A (en) | Inflatable balloon for treatment of rental detachments | |
| CN105902341B (en) | Medicine-filling device under Tenon capsule | |
| CN219021905U (en) | Device for injecting viscoelastic agent into suprachoroidal space | |
| NL2002379C2 (en) | An ophthalmic device and an intravitreal method. | |
| CN108543166A (en) | A kind of retrobulbar injection device | |
| WO2021098155A1 (en) | Folding pressing-type balloon structure | |
| CN211356212U (en) | Improved ophthalmic ball sub-fascia injection needle | |
| JP6697206B1 (en) | Ophthalmic instruments | |
| CN209154191U (en) | A kind of fibre-optic catheter head end for ophthalmologic operation | |
| CN210612338U (en) | Blunt and atraumatic viscoelastic agent syringe needle | |
| CN218943684U (en) | Eye is through ball back injection needle under ten's bag | |
| Chawla et al. | Retinal detachment treated with intravitreal air: an evaluation of 241 cases. | |
| CN206482723U (en) | Ball week joint injection syringe needle after a kind of eyeball | |
| CN211096872U (en) | Casing type under-tenon-capsule anesthesia apparatus | |
| CN220442808U (en) | A subassembly for retina split hole seals fixedly | |
| CN210843780U (en) | Glaucoma aqueous humor drainage device convenient to implant and drain | |
| Luo et al. | A report of pupilloplasty for secondary glaucoma after vitrectomy associated with ocular trauma | |
| CN211863098U (en) | Optical fiber catheter for intervention in Stelemm's canal | |
| CN206315188U (en) | Medicine-filling device under Tenon capsules |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |