Macular pressure balloon
By designing a macular apical balloon with injectable filling medium and using the characteristics of its balloon body to leave the hole in the filled state, the problems of complications and obstruction of vascular growth in traditional macular cleavage treatment surgery are solved, and effective reduction of macular cleavage and recovery of retinal structure are achieved.
Patent Information
- Application Number
- CN202421078736.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-05-16
AI Technical Summary
Although existing macular cleavage treatment surgeries, such as vitrectomy surgery and posterior scleral reinforcement, can relieve retinal traction, complications are prone to occur during the surgery, such as macular bleeding, retinal fissures and detachment, and cannot effectively prevent passive retinal choroidal traction caused by the growth of the eye axis. At the same time, the traditional macular outer apical pressure device is impermeable to oxygen and restricts blood vessel growth due to the apical pressure of the macular area.
A macular apical balloon is designed, including a balloon body and a drainage member. The balloon body has a front face for a pinch of the macular part and a dorsal face facing the macular part. The inside has a balloon cavity that can inject a filler medium into the balloon cavity. The drainage member is used to inject the filler medium into the balloon cavity to fill the balloon body. In the filled state, the balloon body is left blank to allow oxygen permeation of the macular area and gives space for vascular growth.
Through the use of macular apical balloons, it can reduce macular cleavage complications while avoiding hindering the growth of blood vessels in the macular area, achieving effective reduction of macular cleavage and restoration of retinal structure.
Smart Images
Figure CN222723227U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ophthalmic medical instruments, in particular to a macular pressure balloon. Background Art
[0002] Myopic foveoschisis (MF) is one of the most common complications of high myopia. It refers to the phenomenon of interlayer separation of the outer plexiform layer or inner plexiform layer of the retinal neuroepithelium in the macula caused by high myopia. In people with high myopia, the incidence of macular foveoschisis is 9%-34%. At present, surgery is the main means of treating macular foveoschisis. Traditional surgeries mainly include vitrectomy and posterior scleral reinforcement, as follows.
[0003] The treatment principle of vitrectomy is to release the traction of the vitreoretinal interface by cutting the vitreous, so that the retina can adhere to the posterior scleral staphyloma and restore the normal structural morphology of the macula. Vitrectomy is an intraocular surgery, which has a good effect on the retinal reattachment rate and visual improvement after surgery, and the recovery rate of macular splitting is fast. However, vitrectomy cannot delay the passive traction of the retina and choroid caused by axial growth. After the operation, the conditions of scleral expansion and axial growth are still not resolved, and it is only a temporary solution. Vitrectomy is more complicated to operate, with higher surgical risks, and is more prone to complications such as macular hemorrhage, peripheral retinal holes and detachment, and retinal tears.
[0004] The treatment principle of posterior scleral reinforcement is to tighten and suture the posterior sclera of the eyeball appropriately through reinforcement components, shorten the eye axis, relieve the pulling force of the posterior pole vitreous and posterior scleral staphyloma on the posterior pole retina, and thus slow down the progression of macular schisis. Posterior scleral reinforcement is an external surgery, which belongs to relative etiological treatment. It can delay the further development of pathological myopia. It is simple to operate, has lower risks than intraocular surgery, and has higher feasibility and safety. It can avoid complications such as macular hemorrhage, peripheral retinal holes and detachment, retinal tears, and gradually improve the patient's vision while controlling the patient's axial length growth. However, during the operation, posterior scleral reinforcement requires separation of the lateral rectus muscle, inferior rectus muscle, and inferior oblique muscle to implant the reinforcement components, and a traction line is required to tighten and suture the posterior sclera appropriately, which may cause complications such as subretinal hemorrhage.
[0005] There is an external macular pressure device that can be implanted to press the macula of the eyeball, relieve the retinal traction force in the macula, reset the macula split, and restore the normal structure of the macula, thereby reducing the complications caused by vitrectomy and posterior scleral reinforcement. Since the macula has a large number of blood vessels, the external macular pressure device pressing the macula will cause the macula to be oxygen-impermeable and limit the growth space of blood vessels, which is not conducive to the growth of blood vessels in the macula. Utility Model Content
[0006] The technical problem to be solved by the utility model is to provide a macular pressing balloon, which can press the macular part to reset the macular splitting without hindering the blood vessel growth in the macular part.
[0007] In order to solve the above technical problems, the utility model provides a macular pressure balloon, including a balloon body and a drainage component, the balloon body having a front side for pressing the macular area and a back side facing away from the macular area, and having a balloon cavity inside for injecting a filling medium, the drainage component being connected to the balloon cavity and being used for injecting the filling medium into the balloon cavity to fill the balloon body, and the balloon body having a through hole extending from the front side to the back side.
[0008] Furthermore, when the balloon is filled, the front side is curved and the back side is flat.
[0009] Furthermore, the balloon body in a filled state has a length of 6.5 mm to 9.5 mm, and / or a width of 8 mm to 11 mm, and / or a thickness of 4.3 mm to 7.3 mm.
[0010] Furthermore, the through hole diameter of the balloon body is 2.9mm-3.9mm.
[0011] Furthermore, the drainage component includes a drainage valve and a drainage tube, and the drainage valve is connected to the balloon cavity through the drainage tube.
[0012] Furthermore, the drainage valve is shorter than the drainage tube, wider than the outer diameter of the drainage tube, and thicker than the outer diameter of the drainage tube.
[0013] Furthermore, the drainage valve has a length of 3.7 mm to 4.3 mm, and / or a width of 1.8 mm to 2.4 mm, and / or a thickness of 1.3 mm to 1.9 mm.
[0014] Furthermore, the drainage tube has a length of 5.5 mm to 6.5 mm, and / or an outer diameter of 0.7 mm to 1.7 mm.
[0015] Furthermore, the drainage valve has a cavity-shaped drainage cup inside for the needle of the syringe to be inserted to inject the filling medium, the drainage cup is connected to the drainage tube, and the thickness of the drainage cup is greater than the inner diameter of the drainage tube.
[0016] Furthermore, the thickness of the drainage cup is 0.6mm-1.2mm, and the inner diameter of the drainage tube is 0.5mm-0.9mm.
[0017] The utility model has the following beneficial effects: when treating macular splitting, the doctor implants the macular pressure balloon into the macular part of the eyeball, then injects the filling medium into the balloon cavity through the drainage component to fill the balloon body, and uses the balloon body to press the macular part, relieves the retinal traction force in the macular part, resets the macular splitting, and restores the normal structural morphology of the macula. Implanting the macular pressure balloon into the macular part of the eyeball is a surgery performed outside the eyeball, which causes little damage to the eyeball, does not require separation of the lateral rectus muscle, the inferior rectus muscle, and the inferior oblique muscle, and does not require a traction line to appropriately tighten and suture the posterior sclera, and is not prone to complications such as macular hemorrhage, peripheral retinal holes and detachment, retinal tears, and subretinal hemorrhage; when the balloon body is filled, its through hole is left empty for the macular part to permeate oxygen and provide space for blood vessel growth, and will not hinder the growth of blood vessels in the macular part. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a front view of the macular pressure balloon.
[0019] Figure 2 This is a schematic diagram of the back of the macular pressure balloon.
[0020] Figure 3 It is a schematic diagram of the longitudinal section of the macular pressure balloon.
[0021] Figure 4 This is a side view of the macular pressure balloon.
[0022] Figure 5 This is a front view of the macular pressure balloon.
[0023] Figure 6 It is a schematic diagram of the macular pressure balloon pressing on the macula of the eyeball. DETAILED DESCRIPTION
[0024] The present invention is further described in detail below in conjunction with specific implementation methods.
[0025] Macular pressure balloon Figure 1 and Figure 2 As shown, the balloon body 1 includes a drainage component 2 connected to the balloon body 1. The balloon body 1 has a front side 11 for pressing the macula and a back side 12 facing away from the macula, and the balloon body 1 has a through hole 13 that passes through the front side 11 to the back side 12. The drainage component 2 includes a drainage valve 21 and a drainage tube 22, and the drainage valve 21 is connected to the balloon body 1 through the drainage tube 22.
[0026] like Figure 3As shown, the balloon body 1 has a balloon cavity 14 inside which a filling medium (such as saline) can be injected, the drainage valve 21 has a cavity-shaped drainage cup 23 inside, the drainage tube 22 is hollow inside, and the drainage cup 23 is connected to the drainage tube 22. The drainage component 2 is connected to the balloon cavity 14, specifically, the drainage cup 23 of the drainage valve 21 is connected to the balloon cavity 14 of the balloon body 1 through the drainage tube 22, so the filling medium can be injected into the balloon cavity 14 through the drainage valve 21 and the drainage tube 22 to fill the balloon body 1. Figure 4 When the balloon body 1 is in a filled state, its front side 11 is curved and its back side 12 is flat.
[0027] like Figure 4 and Figure 5 As shown, in the filled state, the length L1 of the balloon body 1 is 6.5mm-9.5mm, the width W1 is 8mm-11mm, the thickness H1 is 4.3mm-7.3mm, and the aperture L2 of the through hole 13 is 2.9mm-3.9mm. For example, in the filled state, the length L1 of the balloon body 1 can be 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm or other values between 6.5mm-9.5mm. The width W1 of the balloon body 1 can be 8mm, 8.5mm, 9mm, 9.5mm, 10mm, 10.5mm, 11mm or other values between 8mm-11mm. The thickness H1 of the balloon body 1 can be 4.3mm, 4.8mm, 5.3mm, 5.8mm, 6.3mm, 6.8mm, 7.3mm or other values between 4.3mm-7.3mm. The diameter L2 of the through hole 13 can be 2.9 mm, 3.4 mm, 3.9 mm, or other values between 2.9 mm and 3.9 mm.
[0028] The length L4 of the drainage valve 21 is smaller than the drainage tube 22. The length L4 of the drainage valve 21 is 3.7 mm-4.3 mm, while the length L3 of the drainage tube 22 is 5.5 mm-6.5 mm. For example, the length L4 of the drainage valve 21 can be 3.7 mm, 4 mm, 4.3 mm, or other values between 3.7 mm and 4.3 mm; the length L3 of the drainage tube 22 can be 5.5 mm, 6 mm, 6.5 mm, or other values between 5.5 mm and 6.5 mm.
[0029] The width W2 of the drainage valve 21 is greater than the outer diameter of the drainage tube 22. The width W2 of the drainage valve 21 is 1.8 mm-2.4 mm, and the outer diameter of the drainage tube 22 is 0.7 mm-1.7 mm. For example, the width W2 of the drainage valve 21 can be 1.8 mm, 2.1 mm, 2.4 mm, or other values between 1.8 mm and 2.4 mm; the outer diameter of the drainage tube 22 can be 0.7 mm, 1.2 mm, 1.7 mm, or other values between 0.7 mm and 1.7 mm.
[0030] The thickness H2 of the drainage valve 21 is greater than the outer diameter of the drainage tube 22. The thickness H2 of the drainage valve 21 is 1.3mm-1.9mm, and the outer diameter of the drainage tube 22 is 0.7mm-1.7mm. For example, the thickness H2 of the drainage valve 21 can be 1.3mm, 1.6mm, 1.9mm or other values between 1.3mm-1.9mm; the outer diameter of the drainage tube 22 can be 0.7mm, 1.2mm, 1.7mm or other values between 0.7mm-1.7mm. When the outer diameter of the drainage tube 22 is greater than 1.3mm, it is necessary to ensure that the thickness H2 of the drainage valve 21 is greater than the outer diameter of the drainage tube 22. For example, when the outer diameter of the drainage tube 22 is 1.7mm, the thickness H2 of the drainage valve 21 can be any value greater than 1.7mm but not greater than 1.9mm.
[0031] The drainage cup 23 is for the needle of an external syringe to be inserted to inject the filling medium. The thickness H3 of the drainage cup 23 is greater than the inner diameter of the drainage tube 22, which can increase the insertion range of the needle. Figure 3 As shown, the thickness H3 of the drainage cup 23 is 0.6mm-1.2mm, and the inner diameter of the drainage tube 22 is 0.5mm-0.9mm. For example, the thickness H3 of the drainage cup 23 can be 0.6mm, 0.9mm, 1.2mm or other values between 0.6mm-1.2mm; the inner diameter of the drainage tube 22 can be 0.5mm, 0.7mm, 0.9mm or other values between 0.5mm-0.9mm. When the inner diameter of the drainage tube 22 is greater than 0.6mm, it is necessary to ensure that the thickness H3 of the drainage cup 23 is greater than the inner diameter of the drainage tube 22. For example, when the inner diameter of the drainage tube 22 is 0.7mm, the thickness H3 of the drainage cup 23 can be any value greater than 0.7mm but not greater than 1.2mm; for another example, when the inner diameter of the drainage tube 22 is 0.9mm, the thickness H3 of the drainage cup 23 can be any value greater than 0.9mm but not greater than 1.2mm.
[0032] When using the macular pressure balloon, the doctor first performs ultra-minimally invasive surgery on the eyeball of the patient with macular splitting. At 5 mm behind the corneal margin, the bulbar conjunctiva is cut and separated in a direction parallel to the corneal margin, with an incision length of about 4 mm; then the bulbar conjunctiva and fascia tissue are separated directly to the surface of the sclera, and a tunnel opening about 12 mm to 30 mm long is separated and narrowed backward along the scleral wall; then the front side 11 of the balloon body 1 of the macular pressure balloon is directed toward the scleral surface, and the macular pressure balloon is implanted into the macular part A through the pre-made scleral wall tunnel opening by operating the drainage component 2, and then the needle of the syringe filled with a filling medium (such as saline) is inserted into the drainage cup 23 of the drainage valve 21, and the filling medium is injected into the balloon cavity 14 through the drainage valve 21 and the drainage tube 22 to fill the balloon body 1. When the balloon body 1 is filled, its front side 11 is curved, thereby pressing the macular part A. Specifically, Figure 6 As shown, the retinal traction force of the macula A is relieved, the macula split is reset, and the normal structural morphology of the macula is restored. The above-mentioned implantation of the macula pressing balloon into the macula A of the eyeball is a surgery performed outside the eyeball, which causes little damage to the eyeball, does not require separation of the lateral rectus muscle, the inferior rectus muscle, and the inferior oblique muscle, and does not require a traction line to appropriately tighten and suture the posterior sclera, and is not prone to complications such as macular hemorrhage, peripheral retinal holes and detachment, retinal tears, and subretinal hemorrhage; when the balloon body 1 is filled, its front side 11 presses most of the macula A, and the through hole 13 is left empty for a part of the macula A to permeate oxygen and provide space for blood vessel growth, which will not hinder the growth of blood vessels in the macula A.
[0033] The above is only an implementation method of the invention, and does not limit the scope of patent protection. Those skilled in the art can make non-substantial changes or substitutions based on the invention, which still fall within the scope of patent protection.
Claims
1. Macular pressure balloon, characterized by: The invention comprises a balloon body (1) and a drainage component (2), wherein the balloon body (1) has a front side (11) for pressing against the macula and a back side (12) facing away from the macula, and has a balloon cavity (14) inside for injecting a filling medium, and the drainage component (2) is connected to the balloon cavity (14) and is used for injecting the filling medium into the balloon cavity (14) to fill the balloon body (1), and the balloon body (1) has a through hole (13) penetrating from the front side (11) to the back side (12).
2. The macular pressure balloon according to claim 1, characterized in that: When the balloon body (1) is in a filled state, the front side (11) is curved and the back side (12) is flat.
3. The macular pressure balloon according to claim 1, characterized in that: The balloon body (1) in a filled state has a length of 6.5 mm to 9.5 mm, and / or a width of 8 mm to 11 mm, and / or a thickness of 4.3 mm to 7.3 mm.
4. The macular pressure balloon according to claim 1 or 3, characterized in that: The through hole (13) of the balloon body (1) has a diameter of 2.9 mm to 3.9 mm.
5. The macular pressure balloon according to claim 1, characterized in that: The drainage component (2) comprises a drainage valve (21) and a drainage tube (22), and the drainage valve (21) is connected to the balloon cavity (14) through the drainage tube (22).
6. The macular pressure balloon according to claim 5, characterized in that: The drainage valve (21) is shorter than the drainage tube (22), wider than the outer diameter of the drainage tube (22), and thicker than the outer diameter of the drainage tube (22).
7. The macular pressure balloon according to claim 5 or 6, characterized in that: The diversion valve (21) has a length of 3.7 mm to 4.3 mm, and / or a width of 1.8 mm to 2.4 mm, and / or a thickness of 1.3 mm to 1.9 mm.
8. The macular pressure balloon according to claim 5 or 6, characterized in that: The drainage tube (22) has a length of 5.5 mm to 6.5 mm, and / or an outer diameter of 0.7 mm to 1.7 mm.
9. The macular pressure balloon according to claim 5, characterized in that: The drainage valve (21) has a cavity-shaped drainage cup (23) inside for the needle of a syringe to be inserted to inject the filling medium. The drainage cup (23) is connected to the drainage tube (22). The thickness of the drainage cup (23) is greater than the inner diameter of the drainage tube (22).
10. The macular pressure balloon according to claim 9, characterized in that: The drainage cup (23) has a thickness of 0.6 mm to 1.2 mm, and the inner diameter of the drainage tube (22) is 0.5 mm to 0.9 mm.