CN112220611A - Breathable amniocentoscope - Google Patents
Breathable amniocentoscope Download PDFInfo
- Publication number
- CN112220611A CN112220611A CN202011140783.5A CN202011140783A CN112220611A CN 112220611 A CN112220611 A CN 112220611A CN 202011140783 A CN202011140783 A CN 202011140783A CN 112220611 A CN112220611 A CN 112220611A
- Authority
- CN
- China
- Prior art keywords
- conjunctival sac
- amniocentoscope
- supporting device
- hole
- ring
- 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.)
- Pending
Links
- 210000000795 conjunctiva Anatomy 0.000 claims description 7
- 210000004087 cornea Anatomy 0.000 claims description 6
- 239000003106 tissue adhesive Substances 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims 2
- 241001148471 unidentified anaerobic bacterium Species 0.000 abstract description 4
- 238000009395 breeding Methods 0.000 abstract description 3
- 230000001488 breeding effect Effects 0.000 abstract description 3
- 210000001691 amnion Anatomy 0.000 description 52
- 210000001508 eye Anatomy 0.000 description 9
- 231100000252 nontoxic Toxicity 0.000 description 7
- 230000003000 nontoxic effect Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 208000027418 Wounds and injury Diseases 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000002401 inhibitory effect Effects 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 4
- 239000004926 polymethyl methacrylate Substances 0.000 description 4
- 210000003786 sclera Anatomy 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 210000005252 bulbus oculi Anatomy 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000009958 sewing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 206010029113 Neovascularisation Diseases 0.000 description 1
- 208000023715 Ocular surface disease Diseases 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 210000004381 amniotic fluid Anatomy 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 210000002469 basement membrane Anatomy 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 210000002919 epithelial cell Anatomy 0.000 description 1
- 210000002219 extraembryonic membrane Anatomy 0.000 description 1
- 210000000744 eyelid Anatomy 0.000 description 1
- 210000002950 fibroblast Anatomy 0.000 description 1
- 230000036046 immunoreaction Effects 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 210000001365 lymphatic vessel Anatomy 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000036573 scar formation Effects 0.000 description 1
- 238000002054 transplantation Methods 0.000 description 1
- 210000002993 trophoblast Anatomy 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/0008—Introducing ophthalmic products into the ocular cavity or retaining products therein
- A61F9/0017—Introducing ophthalmic products into the ocular cavity or retaining products therein implantable in, or in contact with, the eye, e.g. ocular inserts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/0008—Introducing ophthalmic products into the ocular cavity or retaining products therein
- A61F9/0026—Ophthalmic product dispenser attachments to facilitate positioning near the eye
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a breathable amniocentoscope, and relates to a medical instrument, which comprises a conjunctival sac supporting device, wherein the conjunctival sac supporting device is annular and is attached to the radian of an eye surface, and a plurality of through holes are formed in the conjunctival sac supporting device. Compared with the prior art, the drainage device can drain effusion generated on the ocular surface below the conjunctival sac supporting device, ventilate and ventilate air below the conjunctival sac supporting device, and inhibit breeding of anaerobic bacteria. Solves the problem that the prior art can not discharge pus and ventilate.
Description
Technical Field
The invention relates to a medical instrument, in particular to a amniocentoscope.
Background
The amnion is the contact part of the fetal membrane and amniotic fluid, is differentiated from trophoblasts, has a thickness of 0.02-0.05 mm, is semitransparent, and has toughness, no blood vessel, no nerve and no lymphatic vessel. The amnion is divided into five layers: epithelial cell layer, basement membrane, parenchymal layer, fibroblast layer, and sponge layer. The amnion has the functions of promoting epithelial repair, inhibiting scar formation, inhibiting cornea neovascularization, inhibiting immunoreaction and the like, so that the amnion covering operation and the amnion transplantation operation are widely applied to treating ocular surface diseases and obtain good clinical curative effect. However, the means for fixing the amnion in the amnion covering operation which is clinically applied at present is mainly surgical suture, which inevitably traumatizes the ocular surface, and because the amnion is thin and is easy to break and perforate, multiple operations are often needed to achieve the treatment purpose.
The inventor's prior application, "CN201620957026. X", "amnioscope", "CN 201610740372.7", amnioscope and preservation method thereof "has disclosed a device for fixing amnion on eyelid and preservation method of amnion without operation, and the amnioscope disclosed in the above two patents has various advantages that the operation of doctor is convenient, patient is painless when wearing, and the amnioscope can be replaced at any time according to the dissolution condition of amnion and disease recovery condition of patient. However, the amniocentoscope still has partial problems in practical use. In this application, it is described that "a trapezoidal groove is formed in the lower portion of the conjunctival sac support device at a position in contact with the lower surface of the eye, where the trapezoidal groove functions to" drain the infraamniotic fluid ". In this application, the amniotic membrane is assembled from the inside to the outside, i.e., the amniotic membrane is placed inside the conjunctival sac support device, the edge of the amniotic membrane is extended outside the conjunctival sac support device and fixed, and the conjunctival sac support device is attached to the ocular surface. Because the amnion is of an integral structure before dissolution, the accumulated liquid on the amnion in the conjunctival sac supporting device can be drained only by arranging the trapezoidal groove on the conjunctival sac supporting device, but the structure of the edge of the amnion coating conjunctival sac supporting device hinders the flow of the liquid generated by the ocular surface. When the amniocentoscope is used for alkali burn and ocular surface inflammation recovery, pus can be generated on the ocular surface in the recovery process, because the amnion on the lateral edge of the conjunctival sac supporting device is not in contact with the ocular surface, the dissolving efficiency of the amnion is slower than that of the amnion in contact with the ocular surface, which is equivalent to that the amnion seals the lateral edge of the conjunctival sac supporting device and the trapezoid groove, meanwhile, if the injury is positioned on the edge of the sclera, the conjunctival sac supporting device can be directly covered on the injury, so that the pus in the conjunctival sac supporting device can not be discharged, and the pus is very harmful to the ocular surface at the injury or on the ocular surface for a long time, so the conjunctival sac supporting device needs to be changed to discharge the pus in time.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the breathable amnioscope which can drain effusion generated on the ocular surface below the conjunctival sac supporting device and can ventilate and ventilate air below the conjunctival sac supporting device to inhibit the breeding of anaerobic bacteria. Solves the problem that the prior art can not discharge pus and ventilate.
In order to solve the technical problem, the invention is solved by the following technical scheme: the utility model provides a ventilative amniocentoscope, includes conjunctival sac strutting arrangement, conjunctival sac strutting arrangement be annular and laminating ocular surface radian, conjunctival sac strutting arrangement on seted up a plurality of through hole.
In the above technical solution, preferably, the conjunctival sac supporting device comprises an arc-shaped ring and a fixing ring, and the through hole is formed in the arc-shaped ring.
In the above technical solution, preferably, the through holes are uniformly arranged in the circumferential direction.
In the above technical solution, preferably, the amnion is attached to the inner side wall of the arc-shaped ring and extends out of the outer side wall of the fixing ring to be fixed.
In the above technical solution, preferably, the fixing ring is provided with a fixing groove matched with the amnion.
In the above technical solution, preferably, the amnion is fixed in the fixing groove by tissue glue or an elastic member.
In the above technical solution, preferably, the amnion is fixed to the arc-shaped ring through the through hole using a surgical thread.
In the above technical solution, preferably, the fixing ring is provided with a plurality of side holes corresponding to the through holes.
In the above technical solution, preferably, the amnion is fixed to the arc-shaped ring through the through-hole and the side-hole using a surgical thread.
In the above technical solution, preferably, the inner circle portion of the conjunctival sac supporting device can completely expose the cornea.
In this application, conjunctival sac strutting arrangement is the annular and the eye surface radian of laminating, and conjunctival sac strutting arrangement divide into arc ring and solid fixed ring, and conjunctival sac strutting arrangement's arc and the laminating of eye surface radian, and conjunctival sac strutting arrangement can be comparatively accurate the area on the eyeball this moment. Similarly, because the eye surface has a radian, no matter where the eye surface is damaged, the wearing position of the amniotic membrane mirror is approximately constant under the condition that the eyeball does not rotate greatly, and the offset is small, so that the condition that the conjunctival sac supporting device directly covers the wound of the eye surface can occur when the amniotic membrane mirror is worn. For this application has seted up the through hole at the arc ring, and the through hole can let conjunctiva bag strutting arrangement penetrating from top to bottom, and preferred through hole needs evenly to set up along the circumferencial direction, sets up four holes or six holes generally speaking. After the amniotic membrane is placed according to the prior method, although the amniotic membrane still seals the side edge of the conjunctival sac supporting device, or the conjunctival sac supporting device directly covers the eye surface wound, because the conjunctival sac supporting device is provided with the through hole, the pus generated in the conjunctival sac supporting device can be directly discharged from the through hole, in addition, the through hole also plays a role in oxygen supply and ventilation, the space air originally covered by the conjunctival sac supporting device basically cannot circulate, and after the through hole is formed, the inside of the conjunctival sac supporting device can ventilate and exchange air, so that the anaerobic bacteria are directly inhibited, the purpose of pus drainage is achieved, and the purpose of inhibiting the generation of the pus is also achieved.
Meanwhile, the through hole not only can be used as a drainage and ventilation through hole, but also can be used as a device for fixing the amnion, the amnion can be sewn on the inner side of the conjunctival sac supporting device through the through hole by using an operation thread, so that the amnion does not need to coat the side edge of the conjunctival sac supporting device, the pus can be drained only by arranging a side hole on the side edge of the conjunctival sac supporting device, and meanwhile, the inside of the conjunctival sac supporting device is ventilated and ventilated.
The other convenient through hole and the side hole can also be used as a device for fixing the amnion, the amnion can be sewn on the inner side of the conjunctival sac supporting device through the through hole and the side hole by using an operation thread, the through hole and the side hole can drain pus, and meanwhile, the inside of the conjunctival sac supporting device is ventilated and ventilated.
Compared with the prior art, the drainage device can drain effusion generated on the ocular surface below the conjunctival sac supporting device, ventilate and ventilate air below the conjunctival sac supporting device, and inhibit breeding of anaerobic bacteria. Solves the problem that the prior art can not discharge pus and ventilate.
Drawings
Fig. 1 is a perspective view of embodiments 1 and 3 of the present invention.
Fig. 2 is a schematic top view of embodiments 1 and 3 of the present invention.
Fig. 3 is a schematic side view of embodiment 1 and embodiment 3 of the present invention.
Fig. 4 is a schematic perspective view of embodiment 5 of the present invention.
Detailed Description
Example 1: as shown in fig. 1 to 3, the breathable amniocentoscope comprises a conjunctival sac supporting device, wherein the conjunctival sac supporting device is annular and is attached to the radian of the ocular surface, the conjunctival sac supporting device comprises an arc-shaped ring 1 and a fixing ring 2, and a through hole 3 is formed in the arc-shaped ring 1. The arcuate ring 1 is shaped to fit completely around the sclera. The through holes 3 are uniformly arranged along the circumferential direction, the number of the through holes is generally even, preferably 4 or 6, and the number of the through holes 3 in the embodiment is 6. The fixing ring 2 is provided with a fixing groove 4 matched with the amnion. The inner circle part of the conjunctival sac supporting device can completely expose the cornea. When the amnion is installed, the amnion is placed on the inner side of the conjunctival sac supporting device, then the edge of the amnion extending out of the conjunctival sac supporting device is fixed in the fixing groove 4 through tissue glue or an elastic piece, and finally the amniocentoscope is placed on the surface of the eye of a patient. The elastic part can be a non-toxic elastic metal ring, a non-toxic rubber ring or a non-toxic elastic plastic ring and the like. The conjunctival sac supporting device may be made of a non-toxic plastic, preferably a PMMA material. The conjunctival sac support device does not directly contact the ocular surface prior to dissolution of the amniotic membrane, with the amniotic membrane between the conjunctival sac support device and the ocular surface.
Example 2: in contrast to example 1, example 2 adds a channel to the bottom surface of the conjunctival sac support device that contacts the ocular surface to drain the sub-amniotic fluid.
Example 3: as shown in fig. 1 to 3, the breathable amniocentoscope comprises a conjunctival sac supporting device, wherein the conjunctival sac supporting device is annular and is attached to the radian of the ocular surface, the conjunctival sac supporting device comprises an arc-shaped ring 1 and a fixing ring 2, and a through hole 3 is formed in the arc-shaped ring 1. The arcuate ring 1 is shaped to fit completely around the sclera. The through holes 3 are uniformly arranged along the circumferential direction, the number of the through holes is generally even, preferably 4 or 6, and the number of the through holes 3 in the embodiment is 6. The fixing ring 2 is provided with a fixing groove 4 matched with the amnion. The inner circle part of the conjunctival sac supporting device can completely expose the cornea. When the amnion is installed, the amnion is placed on the inner side of the conjunctival sac supporting device, then the amnion is sewn on the arc-shaped ring through the through hole 3 by using an operation line, and at least one through hole 3 can be left empty when the amnion is sewn. The through holes 3 are not completely closed after sewing, and the drainage and ventilation effects are still achieved. Because the amniotic membrane does not need to be folded back out of the conjunctival sac supporting device, a gap between the conjunctival sac supporting device and the ocular surface has partial ventilation and drainage effects. Generally speaking, the amnioscope is made before operation, but can be prefabricated, and the prefabricated amnioscope can be stored for several days to several years under different storage conditions. The conjunctival sac supporting device may be made of a non-toxic plastic, preferably a PMMA material.
Example 4: in contrast to example 3, example 4 has no retaining ring.
Example 5: the utility model provides a ventilative amniocentoscope, includes conjunctiva bag strutting arrangement, conjunctiva bag strutting arrangement be annular and laminating eye table radian, conjunctiva bag strutting arrangement include arc ring 1 and solid fixed ring 2, through hole 3 sets up arc ring 1 on. The arcuate ring 1 is shaped to fit completely around the sclera. The through holes 3 are uniformly arranged along the circumferential direction, the number of the through holes is generally even, preferably 4 or 6, and the number of the through holes 3 in the embodiment is 6. The fixing ring 2 is provided with a fixing groove 4 matched with the amnion. The inner circle part of the conjunctival sac supporting device can completely expose the cornea. The fixing ring 2 is provided with a plurality of side holes 5 corresponding to the through holes. When the amnion is installed, the amnion is placed at the inner side of the conjunctival sac supporting device, then the amnion is sewn on the arc-shaped ring through the through hole 3 and the side hole 5 by using an operation line, and at least one through hole 3 and one side hole 5 can be left empty when the amnion is sewn. The drainage and ventilation effects are still achieved because the through holes 3 and the side holes 5 are not completely closed after sewing. Generally speaking, the amnioscope is made before operation, but can be prefabricated, and the prefabricated amnioscope can be stored for several days to several years under different storage conditions. The conjunctival sac supporting device may be made of a non-toxic plastic, preferably a PMMA material.
Example 6: in contrast to example 5, example 6 did not have the fixing groove 4.
Example 7: in example 7, the number of side holes and through holes may be different compared to example 5.
The conjunctival sac supporting device in the embodiments 1 to 7 can be in various models with different sizes, and the material can also be other non-toxic materials other than PMMA material, so that the conjunctival sac supporting device is suitable for different users and the position of the affected part of the ocular surface.
Claims (10)
1. The utility model provides a ventilative amniocentoscope, includes conjunctiva bag strutting arrangement, conjunctiva bag strutting arrangement be the annular and laminate eye surface radian, characterized in that, conjunctiva bag strutting arrangement on seted up a plurality of through hole.
2. The breathable amniocentoscope according to claim 1, wherein the conjunctival sac supporting means comprises an arc-shaped ring and a fixing ring, and the through hole is formed in the arc-shaped ring.
3. A gas permeable amniocentoscope according to claim 1 or 2, wherein the through holes are uniformly arranged in a circumferential direction.
4. The permeable amniocentoscope according to claim 3, wherein an amniocently adheres to the inner sidewall of the arc-shaped ring and extends to the outer sidewall of the fixing ring to be fixed.
5. The permeable amniocentoscope according to claim 4, wherein the fixing ring has a fixing groove for fitting with the amniocentus.
6. The permeable amniocentoscope according to claim 5, wherein the amniocentus membrane is fixed in the fixing groove by tissue glue or an elastic member.
7. The permeable amniocentoscope according to claim 3, wherein the amniocentus membrane is secured to the arcuate ring through the through-hole using a surgical thread.
8. The permeable amniocentoscope according to claim 3 or 7, wherein the fixing ring is provided with a plurality of side holes corresponding to the through holes.
9. The permeable amniocentoscope according to claim 8, wherein the amniocentus is secured to the arcuate ring through the through-hole and the side-hole using a surgical thread.
10. A breathable amnioscope as claimed in claim 1, wherein the inner circular portion of the conjunctival sac supporting means is adapted to fully expose the cornea.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011140783.5A CN112220611A (en) | 2020-10-22 | 2020-10-22 | Breathable amniocentoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011140783.5A CN112220611A (en) | 2020-10-22 | 2020-10-22 | Breathable amniocentoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112220611A true CN112220611A (en) | 2021-01-15 |
Family
ID=74109163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011140783.5A Pending CN112220611A (en) | 2020-10-22 | 2020-10-22 | Breathable amniocentoscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112220611A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115725147A (en) * | 2022-11-14 | 2023-03-03 | 广州悦清再生医学科技有限公司 | Hydrophilic modified polymethyl methacrylate material and application thereof in preparing amnion ring |
| CN116115423A (en) * | 2023-04-04 | 2023-05-16 | 健诺维(成都)生物科技有限公司 | Ocular surface prosthetic devices and supporting component thereof |
| CN117679209A (en) * | 2023-12-25 | 2024-03-12 | 山东第一医科大学附属眼科医院(山东省眼科医院) | Sewing-free biological amniotic membrane for eyes |
| CN119837698A (en) * | 2025-03-20 | 2025-04-18 | 天津世纪康泰生物医学工程有限公司 | Amnioscope with low foreign body sensation and preparation method thereof |
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| CN204192856U (en) * | 2014-11-06 | 2015-03-11 | 江西瑞济生物工程技术有限公司 | A kind of degradable eye maintenance device |
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| CN213963895U (en) * | 2020-10-22 | 2021-08-17 | 钛盾生物(南京)有限公司 | Breathable amniocentoscope |
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2020
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| US20090143792A1 (en) * | 2006-04-13 | 2009-06-04 | Katrin Engelmann | Holding Device for a Membrane, Support for the Holding Device, and Method for Fixing the Membrane to an Eye by Means of the Holding Device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115725147A (en) * | 2022-11-14 | 2023-03-03 | 广州悦清再生医学科技有限公司 | Hydrophilic modified polymethyl methacrylate material and application thereof in preparing amnion ring |
| CN115725147B (en) * | 2022-11-14 | 2023-08-29 | 广州悦清再生医学科技有限公司 | Hydrophilic modified polymethyl methacrylate material and application thereof in preparation of amniotic membrane ring |
| CN116115423A (en) * | 2023-04-04 | 2023-05-16 | 健诺维(成都)生物科技有限公司 | Ocular surface prosthetic devices and supporting component thereof |
| CN117679209A (en) * | 2023-12-25 | 2024-03-12 | 山东第一医科大学附属眼科医院(山东省眼科医院) | Sewing-free biological amniotic membrane for eyes |
| CN119837698A (en) * | 2025-03-20 | 2025-04-18 | 天津世纪康泰生物医学工程有限公司 | Amnioscope with low foreign body sensation and preparation method thereof |
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