CN114652485A - Artificial lacrimal duct with function of tear pump for caruncle pathway - Google Patents
Artificial lacrimal duct with function of tear pump for caruncle pathway Download PDFInfo
- Publication number
- CN114652485A CN114652485A CN202210343346.6A CN202210343346A CN114652485A CN 114652485 A CN114652485 A CN 114652485A CN 202210343346 A CN202210343346 A CN 202210343346A CN 114652485 A CN114652485 A CN 114652485A
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- Prior art keywords
- lacrimal
- duct
- lacrimal duct
- caruncle
- artificial
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- 230000037361 pathway Effects 0.000 title claims abstract description 6
- 210000003928 nasal cavity Anatomy 0.000 claims abstract description 21
- 238000007599 discharging Methods 0.000 claims abstract description 12
- 238000005452 bending Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 210000005252 bulbus oculi Anatomy 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- YMHOBZXQZVXHBM-UHFFFAOYSA-N 2,5-dimethoxy-4-bromophenethylamine Chemical compound COC1=CC(CCN)=C(OC)C=C1Br YMHOBZXQZVXHBM-UHFFFAOYSA-N 0.000 claims 2
- 241000545067 Venus Species 0.000 claims 2
- 239000000607 artificial tear Substances 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 6
- 210000000744 eyelid Anatomy 0.000 description 7
- 206010023644 Lacrimation increased Diseases 0.000 description 5
- 238000005469 granulation Methods 0.000 description 5
- 230000003179 granulation Effects 0.000 description 5
- 206010020718 hyperplasia Diseases 0.000 description 5
- 230000004317 lacrimation Effects 0.000 description 5
- 208000000617 lacrimal duct obstruction Diseases 0.000 description 4
- 206010053990 Dacryostenosis acquired Diseases 0.000 description 3
- 230000002390 hyperplastic effect Effects 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 230000028327 secretion Effects 0.000 description 2
- 241000909851 Epiphora Species 0.000 description 1
- 241000521257 Hydrops Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 208000002847 Surgical Wound Diseases 0.000 description 1
- 230000003872 anastomosis Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000001508 eye Anatomy 0.000 description 1
- 210000000887 face Anatomy 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 208000016747 lacrimal apparatus disease Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000414 obstructive effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 206010041232 sneezing Diseases 0.000 description 1
- 230000000638 stimulation Effects 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
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
Landscapes
- Health & Medical Sciences (AREA)
- Gastroenterology & Hepatology (AREA)
- Pulmonology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (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 relates to an artificial lacrimal duct with a function of a tear pump for a path of a lacrimal caruncle, which comprises a lacrimal sac tube, a lacrimal duct collecting tube and a lacrimal duct discharging tube, wherein the upper end part and the lower end part of the lacrimal duct collecting tube are respectively bent towards different sides, the end part of the lacrimal duct collecting tube is provided with a lacrimal duct guiding container which can be implanted into the lacrimal caruncle, the lacrimal duct guiding container is provided with an elastic supporting piece, the elastic supporting piece is provided with a movable supporting part which is positioned on the upper inner wall or the lower inner wall of the lacrimal duct guiding container, the port of the lacrimal duct discharging tube can be communicated with a nasal cavity, and the port of the lacrimal duct discharging tube is provided with an everted skirt edge. By adopting the technical scheme, the artificial lacrimal duct with the function of the lacrimal pump for the caruncle pathway is provided, and the lacrimal duct can be fixed and does not move and has good lacrimal diversion effect.
Description
Technical Field
The invention relates to an ophthalmic surgery implant, in particular to an artificial lacrimal duct with a function of a tear pump for a caruncle path.
Background
The lacrimal duct obstruction is a common disease in ophthalmology, and can be divided into nasolacrimal duct obstruction, lacrimal duct obstruction and lacrimal canaliculus obstruction according to the obstruction position, the clinical manifestations are epiphora, pus discharge and the like, and the life quality of patients is obviously reduced. Surgery is the primary method of achieving lacrimal passage recanalization. With the development of technologies such as dacryocystorhinostomy, lacrimal duct catheterization and the like, the treatment success rate of lacrimal duct obstructive diseases is obviously improved, but patients still partially fail to realize the recanalization of the original lacrimal duct, and the lacrimation phenomenon still occurs, particularly patients with canaliculus lacrimation or common lacrimal duct obstruction have lower operation success rate because canaliculus lacrimation is thin and small and has 0.3-0.5mm and multiple turns and narrow parts.
For such patients, the current surgical approach is to implant permanent artificial lacrimal ducts, currently including Jones tubes, medpor artificial tubes, etc. The treatment means is bypass tube operation, namely, the original lacrimal passage system is abandoned, and a new bypass tube is implanted again. The use of artificial lacrimal ducts, however, has several drawbacks:
1. the existing bypass pipe generally adopts the gravity drainage principle and the straight pipe design, lacks the active drainage function, needs to rely on the self-power of tears or breathe to drain, and has extremely poor tear drainage efficiency;
2. absent valve function, nasal secretions often enter the conjunctival sac through the artificial tube during sneezing;
3. the bypass tube is made of glass or metal at present, the surface is smooth, a fixing device is lacked, the tube is often displaced and separated after the operation, and inconvenience and even operation failure are brought to a patient.
4. Because the implantation position of the bypass tube is a new surgical wound, granulation hyperplasia often appears under the stimulation of the bypass tube, and the fistulization opening is blocked, so that the surgery fails.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects of the prior art, the invention provides the artificial lacrimal duct with the function of the lacrimal pump for the path of the caruncle, the lacrimal duct can be fixed and can not move, and the lacrimal drainage effect is good.
The technical scheme of the invention is as follows: an artificial lacrimal duct with a lacrimal pump function for a lacrimal passage comprises a lacrimal duct, a lacrimal collecting duct and a lacrimal discharging duct, wherein the upper end and the lower end of the lacrimal duct are respectively bent towards different sides, the end of the lacrimal collecting duct is provided with a lacrimal leading container which can be implanted into a lacrimal mond, the lacrimal leading container is provided with an elastic supporting piece, the elastic supporting piece is provided with a movable supporting part which is positioned on the upper inner wall or the lower inner wall of the lacrimal leading container, the port of the lacrimal discharging duct can be communicated with a nasal cavity, and the port of the lacrimal discharging duct is provided with an everted skirt.
Preferably, the elastic support may be a sheet or a tube.
The technical scheme of the invention adopts the caruncle path to practice conjunctiva-lachrymal anastomosis, thereby avoiding lacrimal canaliculus and preparing the artificial lacrimal duct passing through the caruncle path. The artificial lacrimal duct provides a function of a lacrimal pump, simulates a liquid collecting part of a lacrimal sac and an outlet part communicated with a nasal cavity, the lachrymal guiding container can be implanted at a caruncle of a human body, the lacrimal duct is embedded at the lacrimal sac of the human body, and the lacrimal duct is communicated with the nasal cavity; the skirt edge is positioned in the nasal cavity, can prevent hyperplastic granulation from blocking the artificial lacrimal duct, and can play a role in fixing, so that the artificial lacrimal duct is prevented from moving, and the lacrimal fluid is discharged into the lachrymal sac tube and the nasal cavity through the lachrymal leading container.
The technical scheme of the invention has the following beneficial effects:
1. the lacrimal canaliculus is perfectly avoided, and the problem caused by small caliber of the lacrimal canaliculus in the operation is effectively solved;
2. the artificial lacrimal duct adopts the bent pipe design, conforms to the physiological lacrimal passage shape of the human body, has smoother lacrimation and good lacrimation drainage effect;
3. the tear guiding container is provided with an elastic supporting piece, a movable supporting part is arranged on the upper inner wall or the lower inner wall of the tear guiding container, and the tear guiding container is opened and closed through an eyelid, so that the elastic supporting piece drives the tear guiding container to deform. The artificial lacrimal duct expands under the elastic action of the elastic support part to form negative pressure to attract tears to enter the duct cavity, close the eyelid, contract the anterior muscle of the eyelid plate, extrude the tear guiding container to become narrow instantly, increase the internal pressure in the container, and press the tears to be discharged through the artificial lacrimal duct, thereby realizing the function of tear drainage;
4. the skirt edge can block hyperplastic granulation, and avoid the operation failure caused by blocking the fistulization opening; the skirt edge is also fixed by hyperplastic granulation, so that the artificial lacrimal duct is prevented from shifting;
the invention further provides that: a bending section is arranged between the lacrimal duct collecting tube and the lacrimal duct tube, and the elastic supporting piece can extend to the inner wall of the bending section to form a positioning supporting part.
Adopt above-mentioned further setting again, through the setting of location supporting part for elastic support piece's elasticity is reset effectually.
The invention further provides that: the lacrimal duct is also provided with a one-way valve, the one-way valve comprises two film sheets which can be tightly attached to prevent the liquid in the nasal cavity from flowing back, and a lacrimal passage for the lacrimal fluid to enter the nasal cavity can be formed between the two film sheets.
By adopting the above further arrangement, the one-way valve is arranged in the lacrimal duct, and the two film sheets can close the lacrimal passage in a fitting manner, so that the liquid in the nasal cavity is prevented from flowing back, and the function of the one-way valve is realized.
The invention further provides that: the port of the tear guiding container is arranged in an outward expansion mode.
By adopting the above further arrangement, the port of the tear guiding container is expanded outwards so as to facilitate the tears to enter the artificial lacrimal duct.
The invention further provides that: one side surface of the tear guiding container corresponding to the eyeball is an arc concave surface.
By adopting the above further arrangement, the arc concave surface of the tear guiding container conforms to the physiological shape of human eyes, so that the discomfort is reduced, and the using effect is good.
The invention further provides the following steps: the inner pipe diameter of the lachrymal sac tube close to the side of the lacrimal duct outlet is smaller than that of the lachrymal duct outlet, so that an effusion chamber with gradually reduced inner diameter is formed.
By adopting the above further arrangement, if the lacrimal secretion is less, the lacrimal fluid can be accumulated in the hydrops chamber to a certain degree, and the lacrimal fluid in the chamber can be quickly discharged when the eyelid is closed.
The invention further provides that: the inner diameter of the tear guiding container is 3-5mm, the inner diameter of the lacrimal duct is 3-4mm, and the outer diameter of the skirt edge is 5-6 mm.
By adopting the above further setting, the specification setting of the artificial lacrimal duct is more reasonable, the artificial lacrimal duct is suitable for the size of the pipe diameter of a human body, and the using effect is better.
The invention further provides that: the elastic support may be made of a metal material.
By adopting the above further arrangement, the support effect on the tear guiding container is good, and the elastic force maintaining time is long.
Drawings
FIG. 1 is a block diagram of an embodiment of the present invention;
fig. 2 is an internal structural view of an embodiment of the present invention in which the tear passage of the check valve is in a closed state;
fig. 3 is an internal structural view of an embodiment of the present invention in which the tear passage of the check valve is in an open state;
fig. 4 is a schematic view of an artificial lacrimal duct of an embodiment of the present invention implanted in a human body.
Detailed Description
The technical solutions in the embodiments will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-4, the artificial lacrimal duct with a lacrimal pump function for a lacrimal passage of a caruncle of the present invention comprises a lacrimal sac tube 1, a lacrimal collecting tube 2 and a lacrimal discharging tube 3 formed by respectively bending the upper end and the lower end of the lacrimal sac tube 1 to different sides, wherein the lacrimal collecting tube 2, the lacrimal discharging tube 3 and the lacrimal sac tube 1 are generally formed integrally, or are arranged separately, and then connected and fixed, the end of the lacrimal collecting tube 2 is provided with a lacrimal leading container 4 which can be implanted into the caruncle, the lacrimal leading container 4 is provided with an elastic supporting member 5, the elastic supporting member 5 is provided with a movable supporting part 51 positioned on the upper inner wall or the lower inner wall of the lacrimal leading container 4, the "upper" artificial lacrimal duct is implanted, the lacrimal leading container 4 faces one side of the upper eyelid, and the port of the lacrimal leading tube 3 can be communicated with the nasal cavity; a bending section 11 is arranged between the lacrimal duct collecting tube 2 and the lacrimal duct tube 1, the elastic support 5 can extend to the inner wall of the bending section 11 to form a positioning support 52, and the positioning support 52 can also extend to the inner wall of the lacrimal duct tube 1; the elastic support 5 can be a sheet or a tube, the tubular elastic support 5 can be a circumferentially closed tube, and can also be a C-shaped tube with an opening, and the C-shaped tube is supported on the upper inner wall and the lower inner wall of the tear guiding container 4;
the movable supporting part 51 of the sheet-shaped elastic supporting part 5 is positioned on the inner wall of the upper side of the tear guiding container 4, and the corresponding positioning supporting part 52 is positioned on the inner wall of the side with larger pipe diameter of the bending section 11; if the movable supporting portion 51 of the sheet-shaped elastic supporting member 5 is located on the inner wall of the lower side of the tear guiding container 4, the positioning supporting portion 52 is correspondingly located on the inner wall of the smaller pipe diameter side of the bending section 11, and the elastic supporting member 5 may be made of a metal material, or may be made of other materials such as silica gel, rubber and the like which can be elastically deformed; an outward-turned skirt edge 6 is arranged at the port of the lacrimal duct outlet 3, the skirt edge 6 and the lacrimal duct outlet 3 are integrally arranged, and a fixed connection mode can be adopted in a split mode; a one-way valve 7 is also arranged in the lacrimal duct 3, the one-way valve 7 comprises two film sheets 71 which can be tightly attached to prevent the liquid in the nasal cavity from flowing back, a lacrimal passage 72 for the lacrimal fluid to enter the nasal cavity can be formed between the two film sheets 71, and the two film sheets 71 can be two independent sheets or can be formed by folding one sheet; the port of the tear guiding container 4 is expanded outwards and is in a bell mouth shape, and one side of the radial tear collecting pipe 2 in the tear guiding container 4 is gradually reduced and is approximately in a funnel shape; one side surface of the tear guiding container 4 corresponding to the eyeball is an arc concave surface 41; the inner diameter of the tear guiding container 4 is 3-5mm, the inner diameter of the lachrymal sac tube 1 is 3-4mm, the wall thickness of the lachrymal sac tube 1 is 0.1-0.2mm, and the outer diameter of the skirt edge 6 is 5-6 mm; the angle between the lacrimal duct collecting pipe 2 and the lacrimal duct pipe 1 can be 90-110 degrees, and the angle between the lacrimal duct discharging pipe 3 and the lacrimal duct pipe 1 can be 80-110 degrees; the inner diameter of the lachrymal sac tube 1 at the side close to the lacrimal duct outlet 3 is smaller than that at the side close to the lacrimal duct collector 2, so that a effusion chamber 12 with gradually reduced inner diameter is formed.
The artificial lacrimal duct provides the function of a lacrimal pump, simulates a liquid collecting part of a lacrimal sac and an outlet part communicated with a nasal cavity, the lachrymal guiding container 4 can be implanted at the position of a caruncle of a human body, the lachrymal duct 1 is buried at the position of the lacrimal sac of the human body, the lachrymal outlet tube 3 is communicated with the nasal cavity, the skirt edge 6 is positioned in the nasal cavity, the artificial lacrimal duct can be prevented from being blocked by hyperplasia granulation, and meanwhile, the fixing function can be achieved, and the lacrimal fluid enters the lachrymal duct 1 through the lachrymal guiding container 4 and is discharged into the nasal cavity;
the eyelid is opened, the artificial lacrimal duct is expanded under the elastic action of the elastic support 5 to form negative pressure, the tears are attracted to enter the duct cavity, the tears are attracted to enter the effusion cavity 12 of the lacrimal sac tube 1, the eyelid is closed, the anterior muscle of the meibomian plate contracts to press the movable support part 51 of the elastic support 5, the positioning support part 52 is relatively fixed, so that the movable support part 51 drives the tear guiding container 4 to deform, the tear guiding container 4 is instantly narrowed, the internal pressure in the container is increased, the tears in the effusion cavity 12 are quickly discharged out of the lacrimal duct 3, the tear channel 72 between the two film bodies 71 can be opened by the impact of the tears, the tears are finally discharged into the nasal cavity, then the two film bodies 71 are jointed to close the tear channel 72, the liquid in the nasal cavity is prevented from flowing back, and the one-way valve is realized.
Claims (9)
1. An artificial lacrimal duct with a function of a tear pump for a path of a caruncle, characterized in that: the lacrimal duct comprises a lacrimal duct tube, a lacrimal duct collecting tube and a lacrimal duct discharging tube, wherein the upper end and the lower end of the lacrimal duct tube are respectively bent towards different sides, the end part of the lacrimal duct collecting tube is provided with a lacrimal leading container which can be implanted into a caruncle, the lacrimal leading container is provided with an elastic supporting piece, the elastic supporting piece is provided with a movable supporting part which is positioned on the upper inner wall or the lower inner wall of the lacrimal leading container, the port of the lacrimal duct discharging tube can be communicated with the nasal cavity, and the port of the lacrimal duct discharging tube is provided with an everted skirt edge.
2. An artificial tear duct with tear pump function for the caruncle pathway as claimed in claim 1, wherein: a bending section is arranged between the lacrimal duct collecting tube and the lacrimal duct tube, and the elastic supporting piece can extend to the inner wall of the bending section to form a positioning supporting part.
3. An artificial lacrimal duct with a function of a lacrimal pump for a caruncle approach according to claim 1 or 2, wherein: the elastic support may be sheet-like or tubular.
4. An artificial lacrimal duct with a lacrimal pump function for a Venus caruncle pathway according to claim 1 or 2, wherein: the lacrimal duct is also provided with a one-way valve, the one-way valve comprises two film sheets which can be tightly attached to prevent the liquid in the nasal cavity from flowing back, and a lacrimal passage for the lacrimal fluid to enter the nasal cavity can be formed between the two film sheets.
5. An artificial lacrimal duct with a function of a lacrimal pump for a caruncle approach according to claim 1 or 2, wherein: the port of the tear guiding container is arranged in an outward expansion mode.
6. An artificial lacrimal duct with a lacrimal pump function for a Venus caruncle pathway according to claim 1 or 2, wherein: one side surface of the tear guiding container corresponding to the eyeball is an arc concave surface.
7. An artificial lacrimal duct with a function of a lacrimal pump for a caruncle approach according to claim 1 or 2, wherein: the inner pipe diameter of the lachrymal sac tube close to the side of the lacrimal duct outlet is smaller than that of the lachrymal duct outlet, so that an effusion chamber with gradually reduced inner diameter is formed.
8. An artificial tear duct for the caruncle's path with tears as in claim 1 or 2, wherein: the inner diameter of the tear guiding container is 3-5mm, the inner diameter of the lacrimal duct is 3-4mm, and the outer diameter of the skirt edge is 5-6 mm.
9. An artificial lacrimal duct with a function of a lacrimal pump for a caruncle approach according to claim 1 or 2, wherein: the elastic support may be made of a metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210343346.6A CN114652485A (en) | 2022-04-02 | 2022-04-02 | Artificial lacrimal duct with function of tear pump for caruncle pathway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210343346.6A CN114652485A (en) | 2022-04-02 | 2022-04-02 | Artificial lacrimal duct with function of tear pump for caruncle pathway |
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| Publication Number | Publication Date |
|---|---|
| CN114652485A true CN114652485A (en) | 2022-06-24 |
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ID=82033798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210343346.6A Pending CN114652485A (en) | 2022-04-02 | 2022-04-02 | Artificial lacrimal duct with function of tear pump for caruncle pathway |
Country Status (1)
| Country | Link |
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| CN (1) | CN114652485A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2258057Y (en) * | 1995-09-29 | 1997-07-23 | 高亚利 | Implantation tube for nasolacrimal duct |
| JPH10309292A (en) * | 1997-05-13 | 1998-11-24 | Masao Miyake | Artificial lacrimal duct forming tube |
| US5993407A (en) * | 1996-10-25 | 1999-11-30 | Moazed; Kambiz Thomas | Transnasal lacrimal insert |
| JP2000262630A (en) * | 1999-03-15 | 2000-09-26 | Sumitomo Bakelite Co Ltd | Humor suction and collection device |
| US20060235367A1 (en) * | 2002-12-27 | 2006-10-19 | Seisuke Takashima | Aqueous humor drainage implant for treatment glaucoma |
| CN201108532Y (en) * | 2007-11-21 | 2008-09-03 | 北京市意华健科贸有限责任公司 | Tear channel pipe |
| KR200442820Y1 (en) * | 2007-08-07 | 2008-12-11 | 최경배 | Artificial lacrymal tube capable of preventing back flow of tear |
| CN101401751A (en) * | 2008-11-03 | 2009-04-08 | 王志全 | Medical drainage tube |
| CN104586565A (en) * | 2014-12-31 | 2015-05-06 | 温州医科大学附属眼视光医院 | Lacrimal pump physiological mechanism imitating lacrimal drainage device |
| CN107929828A (en) * | 2017-12-14 | 2018-04-20 | 段书霞 | Nose sucking device |
| CN211187656U (en) * | 2019-08-05 | 2020-08-07 | 华中科技大学同济医学院附属同济医院 | Lacrimal passage bypass artificial tube |
| CN213310860U (en) * | 2020-08-25 | 2021-06-01 | 台州市中心医院（台州学院附属医院） | Lacrimal passage drainage tube |
| CN113197722A (en) * | 2021-05-26 | 2021-08-03 | 淮阴工学院 | Lacrimal passage drainage device and preparation method thereof |
| CN215461218U (en) * | 2021-07-16 | 2022-01-11 | 华中科技大学同济医学院附属同济医院 | Lacrimal passage bypass artificial tube placed by bone nasolacrimal duct |
-
2022
- 2022-04-02 CN CN202210343346.6A patent/CN114652485A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2258057Y (en) * | 1995-09-29 | 1997-07-23 | 高亚利 | Implantation tube for nasolacrimal duct |
| US5993407A (en) * | 1996-10-25 | 1999-11-30 | Moazed; Kambiz Thomas | Transnasal lacrimal insert |
| JPH10309292A (en) * | 1997-05-13 | 1998-11-24 | Masao Miyake | Artificial lacrimal duct forming tube |
| JP2000262630A (en) * | 1999-03-15 | 2000-09-26 | Sumitomo Bakelite Co Ltd | Humor suction and collection device |
| US20060235367A1 (en) * | 2002-12-27 | 2006-10-19 | Seisuke Takashima | Aqueous humor drainage implant for treatment glaucoma |
| KR200442820Y1 (en) * | 2007-08-07 | 2008-12-11 | 최경배 | Artificial lacrymal tube capable of preventing back flow of tear |
| CN201108532Y (en) * | 2007-11-21 | 2008-09-03 | 北京市意华健科贸有限责任公司 | Tear channel pipe |
| CN101401751A (en) * | 2008-11-03 | 2009-04-08 | 王志全 | Medical drainage tube |
| CN104586565A (en) * | 2014-12-31 | 2015-05-06 | 温州医科大学附属眼视光医院 | Lacrimal pump physiological mechanism imitating lacrimal drainage device |
| CN107929828A (en) * | 2017-12-14 | 2018-04-20 | 段书霞 | Nose sucking device |
| CN211187656U (en) * | 2019-08-05 | 2020-08-07 | 华中科技大学同济医学院附属同济医院 | Lacrimal passage bypass artificial tube |
| CN213310860U (en) * | 2020-08-25 | 2021-06-01 | 台州市中心医院（台州学院附属医院） | Lacrimal passage drainage tube |
| CN113197722A (en) * | 2021-05-26 | 2021-08-03 | 淮阴工学院 | Lacrimal passage drainage device and preparation method thereof |
| CN215461218U (en) * | 2021-07-16 | 2022-01-11 | 华中科技大学同济医学院附属同济医院 | Lacrimal passage bypass artificial tube placed by bone nasolacrimal duct |
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