CN118542770A - Be used for retina to drop postoperative magnetic control auxiliary device that resets - Google Patents
Be used for retina to drop postoperative magnetic control auxiliary device that resets Download PDFInfo
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- CN118542770A CN118542770A CN202410586533.6A CN202410586533A CN118542770A CN 118542770 A CN118542770 A CN 118542770A CN 202410586533 A CN202410586533 A CN 202410586533A CN 118542770 A CN118542770 A CN 118542770A
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- magnetic
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- retina
- retinal detachment
- auxiliary device
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- 230000002980 postoperative effect Effects 0.000 title claims description 10
- 206010038848 Retinal detachment Diseases 0.000 claims abstract description 36
- 230000004264 retinal detachment Effects 0.000 claims abstract description 36
- 210000005252 bulbus oculi Anatomy 0.000 claims abstract description 14
- 210000003786 sclera Anatomy 0.000 claims abstract description 8
- 210000003205 muscle Anatomy 0.000 claims abstract description 6
- 239000002131 composite material Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 8
- -1 polydimethylsiloxane Polymers 0.000 claims description 8
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- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 6
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 229920001296 polysiloxane Polymers 0.000 claims description 5
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 4
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- Prostheses (AREA)
Abstract
The invention discloses a magnetic control resetting auxiliary device used after retinal detachment operation, which comprises a fixed ring binding belt, a magnetic film and a magnetic sheet, wherein the magnetic film is arranged at a retinal detachment position, the magnetic sheet is arranged outside an eyeball and corresponds to the corresponding position of the retinal detachment position, the magnetic sheet and the magnetic film are adsorbed by magnetic force, so that the magnetic film covers the whole retinal detachment area to form a closed water-proof area, the film is pushed to fix the retina by the magnetic force of the magnetic sheet, and the fixed ring binding belt sequentially penetrates under rectus muscle and in a lamellar tunnel and fixedly presses the magnetic sheet on a sclera. By adopting the invention, the retina is pushed to fall off and reset under the action of the magnetic field of the magnetic film, and the invention has excellent hydrophobicity and sealing property. The magnetic film material has excellent biocompatibility, is not easy to cause emulsification phenomenon, and has high safety.
Description
Technical Field
The invention relates to a rehabilitation device suitable for a retinal detachment operation, in particular to a magnetic control resetting auxiliary device for the retinal detachment operation.
Background
Retinal detachment, which is a serious vision-threatening disease, refers to the separation of the retina from the underlying choroid. If not treated in time, retinal detachment may result in permanent vision loss. Traditional surgical treatments include vitrectomy and retinal reduction. However, the success rate of these procedures is low for complex retinal detachment cases, such as megalobrama retinal detachment or Proliferative Vitreoretinopathy (PVR).
The current newer surgical approach to retinal detachment is silicone oil filled techniques for treating complex retinal detachment cases. Silicone oil is an inert liquid that temporarily supports the retina, promoting its healing and reattachment to the choroid. The prior silicone oil filling operation technical scheme comprises:
1. standard silicone oil filling: standard viscosity silicone oils are injected intraoperatively and typically require removal after months or years.
2. High viscosity silicone oil filling: high viscosity silicone oil is injected during operation to provide longer lasting retina support and reduce recurrence risk.
3. Removable silicone oil filling: the removable silicone oil can be injected in the operation and can be removed in a period of time after the operation, so that long-term complications are avoided.
Although silicone oil filling technology is widely used in the medical field and has excellent clinical recovery effects, silicone oil filling technology requires a post-operative patient to maintain a head-down posture for a long period of time to prevent aqueous humor from contacting the operative field, thereby affecting recovery. However, silicone oils may emulsify in the eye after interacting with vitreous or johnsonite tissue, breaking down into droplets, resulting in blurred vision. Furthermore, if the surgical technique is improper or the patient's post-operative head pose is incorrect, silicone oil may migrate from the vitreous cavity to other ocular structures, such as the anterior chamber or iris, causing the silicone oil to shift.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide a magnetic control resetting auxiliary device for the retina separation postoperative, which can enable a magnetic film to push retina separation resetting under the action of a magnetic field and isolate the retina separation resetting from intraocular water.
In order to solve the technical problems, the embodiment of the invention provides a magnetic control resetting auxiliary device used after a retinal detachment operation, which comprises a fixed ring ribbon, a magnetic film and a magnetic sheet, wherein the magnetic film is arranged at a retinal detachment position, the magnetic sheet is positioned outside an eyeball and corresponds to the corresponding position of the retinal detachment position, the magnetic sheet and the magnetic film are adsorbed by magnetic force, so that the magnetic film covers the whole retinal detachment area to form a closed water-proof area, the film is pushed to fix the retina by the magnetic force of the magnetic sheet, and the fixed ring ribbon sequentially penetrates under rectus muscle and in a lamellar tunnel and fixedly presses the magnetic sheet on a sclera.
The two ends of the fixed ring ribbon pass through a section of thin silicone tube in opposite directions, so that the fixed ring ribbon is attached to the eyeball wall.
The magnetic film is a composite material obtained by fully mixing polydimethylsiloxane and isotropic neodymium iron boron particles, and the composite material is coated on a polyethylene terephthalate film and baked and cured after coating.
Wherein the mass ratio of the polydimethylsiloxane to the isotropic NdFeB particles is 1:6.
Wherein the thickness of the magnetic film is 300 micrometers, the density is 6.32g/cm -3, and the elastic modulus is 20MPa.
Wherein the area of the magnetic film is 1.4 times larger than the retinal detachment area of the patient.
The embodiment of the invention has the following beneficial effects: the magnetic film can be customized according to the specific condition of the retina rupture hole of a patient, and the magnetic film can promote the retina to fall off and reset under the action of the magnetic field of the magnetic film, and has excellent hydrophobicity and sealing property. This makes the patient no longer subject to posture limitations, and postoperative rehabilitation is easier. Compared with the existing silicone oil filling technology, the magnetic film material adopted by the invention has excellent biocompatibility, is not easy to generate emulsification phenomenon, has high safety, and has smaller influence on the retina rehabilitation process compared with the silicone oil.
Drawings
FIG. 1 is a schematic overall construction of the present invention;
FIG. 2 is a schematic flow chart of the magnetic thin film manufacturing method of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent.
As shown in fig. 1, the magnetic control resetting auxiliary device for the retina separation operation in the embodiment of the invention is a method for repairing retina under the action of magnetic field, and comprises a fixed ring binding belt 1, a magnetic film 2 and a magnetic sheet 3, wherein the flexible magnetic film 2 is adsorbed to the retina separation part under the action of magnetic field, so that the retina separation part has the effect of isolating eyeballs from aqueous humor, and the retina separation part is pushed to be automatically repaired and reset.
In this embodiment, the magnetic film 2 is placed in the eye by surgery, and placed in the retinal detachment site by the external magnetic sheet 3, and the procedure is as follows:
After anesthesia, a patient is subjected to anesthesia, the retinal detachment position confirmed by a doctor is punctured by a 1ml syringe to release 2ml aqueous humor under a surgical microscope, then the flexible magnetic film is rolled into a thin strip shape and is injected into an eye through the 1ml syringe, after the injection is finished, the needle is quickly taken out and pressed for a moment by a cotton swab, the film is quickly adsorbed to the retina of the eyeball by a magnetic field at the sclera of the eyeball by using a magnetic sheet 3 externally, the position of the external magnetic sheet is adjusted to a retinal detachment position 4 by the surgical microscope, the whole retinal detachment area is covered by the film through the external magnetic force to form a closed water-proof area, and the retina is fixed by pushing the film through the magnetic force to help the restoration and restoration.
After confirming the final position of the magnetic sheet 3, a sclera lamellar tunnel with the width of 3-4 mm is made on the sclera between adjacent rectus muscles of each quadrant of the circumference of the eyeball surface corresponding to the center of the magnetic sheet 3, then the fixing ring ribbon 1 sequentially passes through the lower rectus muscles and lamellar tunnels, and then the magnetic sheet 3 is fixed. After the fixing ring band is fixed on the sclera 5, both ends of the fixing ring band pass through a section of thin silicone tube (about 4mm long) in opposite directions, specifically, the silicone tube is closed and inserted by using a mosquito-type clamp head, a jaw is opened, one end of the ring band is sent in, clamped and pulled out, and the other end of the ring band is penetrated in opposite directions in the same way. The two ends are pulled to the opposite direction until the annular ribbon is just attached to the eyeball wall, and the thin silicone tube is fixed by tightening. At this time, the part of the ring binder surrounding the eyeball is equal to the circumference of the eyeball, the redundant parts at the two ends are not sheared off firstly, and finally the ring binder is tightly contracted.
The fixing ring belts used in the scleral cerclage are commonly used as elastic silicon tapes with the widths of 2mm, 2.5mm and 4 mm.
Through the mode, the magnetic film 2 is arranged at the retinal detachment position, the magnetic sheet 3 is positioned outside the eyeball and corresponds to the corresponding position of the retinal detachment position, the magnetic sheet 3 and the magnetic film 2 are adsorbed by magnetic force, the magnetic film 2 covers the whole retinal detachment area to form a closed water-proof area, the retina is fixed by pushing the film through the magnetic force of the magnetic sheet, the fixed ring ribbon 1 sequentially penetrates under rectus muscle and in a lamellar tunnel, and the magnetic sheet 3 is fixed and pressed on the sclera 5.
In this example, as shown in fig. 2, in the preparation process of the magnetic thin film 2, a planetary vacuum beater (MSK-SFM-16, a company of crystal star science and technology in the Shenzhen market) was used to thoroughly mix Polydimethylsiloxane (PDMS) (Sylgard 184, dacorning company) with isotropic neodymium iron boron (Nd 2Fe 14B) particles, so as to obtain a composite material, and the mass ratio of the two is 1:6.
The aforementioned composite material was coated on a polyethylene terephthalate (PET) film (thickness 50 μm, vantai electronics limited) using a solution spraying method to form a 300 μm thick film, and the coated composite film was baked at 95 ℃ for 45 minutes to be completely cured. The composite material has the advantages of high flexibility, good transparency, chemical resistance, weather resistance, recyclability and the like. Solution spraying is a simple and low-cost preparation method, can accurately control the thickness and surface flatness of the film, and preferably has a magnetic film density of 6.32g/cm -3 and an elastic modulus of 20MPa.
The invention adopts an oriented magnetization method to prepare the flexible magnetic film, wherein the oriented magnetization refers to the process that magnetic moments are arranged along a specific direction in a magnetic material. By controlling the direction and magnitude of the magnetic field, the magnetic moments can be oriented in a particular arrangement in the material, thereby achieving particular magnetic properties and magnetic characteristics.
The cured composite film was cut into square films (20X 20, 10X 10, 5X 5 in mm) of different sizes using a lettering machine (CE 6000-40 Plus,Graphtec America, inc.), and then from PET film. The material uses a magnetizer (ME-1225, magler technologies Co., ltd.) which can be magnetized by releasing more than 1500 watts of power in a short pulse period (1 second). The desired flexible magnetic film can be finally obtained.
Specifically, according to the size of the retina area of a patient, the circular flexible magnetic film which is 1.4 times larger than the retina detachment area of the patient is customized, the area of the film is increased, so that the magnetic flux area of the film in the direction perpendicular to the surface of a magnetic field is larger, the magnetic force of the film is improved, the attractive force of the film on a magnet is larger, the attractive force of the film is increased, and the effect of preventing leakage is achieved.
According to the size of the patient retina drops, circular permanent magnets with different sizes are customized so as to achieve a better effect of attracting the flexible magnetic film, and the magnetism of the permanent magnets can be stored for a long time, so that the patient does not need to replace the permanent magnets in the recovery process.
The method improves the attraction of the external permanent magnet to the flexible magnetic film in the eye, thereby achieving the effect that the aqueous humor can not permeate into the retinal detachment area when the retinal detachment area is blocked
Through the above embodiment, the needed magnetic film and the magnetic sheet can be customized for each patient through the wound size of the eyeball retinal detachment region of the patient, instead of uniformly customizing the magnetic film which covers the whole retina, so that the needs of different patients can be adjusted, and the patient with smaller wound can have more comfortable recovery experience during recovery.
After the steps, the device is arranged through the operation, because the flexible magnetic film is light, thin and hydrophobic, the device can be well adsorbed at the retinal detachment and cannot fall off, and a good isolation layer is formed to isolate aqueous humor, so that the device is not limited by body positions, can freely move, and does not need to worry about daily activities to enable aqueous humor to enter the retinal detachment area to influence the reset.
The embodiment of the invention can obtain the following advantages:
1. The invention uses the magnetic field effect of the magnetic film to push the retina to fall off and reset and isolate the retina from aqueous humor in eyes, thereby avoiding the problem of body position limitation. During postoperative rehabilitation, the patient can freely move without worrying about the influence of aqueous humor in eyes on the recovery of the retina resetting area;
2. The magnetic film material (PDMS-Nd 2Fe14B composite material) has excellent biocompatibility and excellent anti-emulsifying property, and is widely applied to the fields of medical instruments and implants. The material has low toxicity in vivo and can not cause harm to human body;
3. The magnetic film material has good hydrophobicity, can effectively prevent aqueous humor from invading the retina from falling off the postoperative region, and ensures the closure of the retina split holes, thereby improving the postoperative recovery quality;
4. the technology of the invention is an innovative thought and technology which is not available in the medical community so far, and brings better recovery experience and effect for patients with retinal detachment surgery.
The above disclosure is only a preferred embodiment of the present invention, and it is needless to say that the scope of the invention is not limited thereto, and therefore, the equivalent changes according to the claims of the present invention still fall within the scope of the present invention.
Claims (6)
1. The utility model provides a be used for retina to drop postoperative magnetic control auxiliary device that resets, its characterized in that, including fixed ring ribbon, magnetic film and magnetic sheet, the retina drop position is arranged in to the magnetic film, the magnetic sheet is located outside the eyeball and corresponds to the corresponding position of retina drop position, the magnetic sheet with the magnetic film passes through magnetic force adsorption, makes the magnetic film covers whole retina and drops regional formation confined water proof area, and passes through the effect of magnetic force of magnetic sheet promotes the fixed retina of film, fixed ring ribbon wears to locate under the rectus muscle and in the lamellar tunnel in proper order, and will the magnetic sheet is fixed to be pressed on the sclera.
2. The magnetic control resetting auxiliary device for the operation after the retinal detachment according to claim 1, wherein two ends of the fixing ring ribbon pass through a section of thin silicone tube in opposite directions, so that the fixing ring ribbon is attached to the eyeball wall.
3. The magnetic control resetting auxiliary device for the postoperation of retinal detachment according to claim 2, wherein the magnetic film is a composite material obtained by sufficiently mixing polydimethylsiloxane and isotropic neodymium iron boron particles, the composite material is coated on a polyethylene terephthalate film, and the composite material is baked and solidified after coating.
4. The magnetic control resetting auxiliary device for the retinal detachment operation according to claim 3, wherein the mass ratio of the polydimethylsiloxane to the isotropic neodymium iron boron particles is 1:6.
5. The magnetic control resetting auxiliary device for the operation after the retinal detachment according to claim 4, wherein the magnetic film has a thickness of 300 micrometers, a density of 6.32g/cm -3 and an elastic modulus of 20MPa.
6. The magnetic control resetting auxiliary device for the operation after the retinal detachment according to claim 5, wherein the area of the magnetic film is 1.4 times larger than the retinal detachment area of the patient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410586533.6A CN118542770A (en) | 2024-05-13 | 2024-05-13 | Be used for retina to drop postoperative magnetic control auxiliary device that resets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410586533.6A CN118542770A (en) | 2024-05-13 | 2024-05-13 | Be used for retina to drop postoperative magnetic control auxiliary device that resets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118542770A true CN118542770A (en) | 2024-08-27 |
Family
ID=92447207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410586533.6A Pending CN118542770A (en) | 2024-05-13 | 2024-05-13 | Be used for retina to drop postoperative magnetic control auxiliary device that resets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118542770A (en) |
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2024
- 2024-05-13 CN CN202410586533.6A patent/CN118542770A/en active Pending
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