CN109350353B - Device for sucking and removing posterior chamber viscoelastic agent for central hole type artificial lens implantation and use method - Google Patents
Device for sucking and removing posterior chamber viscoelastic agent for central hole type artificial lens implantation and use method Download PDFInfo
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- CN109350353B CN109350353B CN201811218070.9A CN201811218070A CN109350353B CN 109350353 B CN109350353 B CN 109350353B CN 201811218070 A CN201811218070 A CN 201811218070A CN 109350353 B CN109350353 B CN 109350353B
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- 238000002513 implantation Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 title description 5
- 239000007788 liquid Substances 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000002347 injection Methods 0.000 claims abstract description 13
- 239000007924 injection Substances 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 239000010902 straw Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims description 3
- 239000003566 sealing material Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 3
- 238000007906 compression Methods 0.000 claims 3
- 210000003128 head Anatomy 0.000 abstract description 28
- 230000002093 peripheral effect Effects 0.000 abstract description 5
- 210000002159 anterior chamber Anatomy 0.000 abstract description 3
- 210000000695 crystalline len Anatomy 0.000 description 32
- 210000001508 eye Anatomy 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 210000005252 bulbus oculi Anatomy 0.000 description 2
- 230000002980 postoperative effect Effects 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 230000001746 atrial effect Effects 0.000 description 1
- 210000004087 cornea Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
Classifications
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- 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
- A61F9/007—Methods or devices for eye surgery
- A61F9/00709—Instruments for removing foreign bodies
-
- 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
- A61F2/14—Eye parts, e.g. lenses or corneal implants; Artificial eyes
- A61F2/16—Intraocular lenses
- A61F2/1662—Instruments for inserting intraocular lenses into the eye
-
- 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
- A61F9/007—Methods or devices for eye surgery
- A61F9/00736—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments
-
- 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
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
- A61F2009/00861—Methods or devices for eye surgery using laser adapted for treatment at a particular location
- A61F2009/0087—Lens
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- External Artificial Organs (AREA)
- Prostheses (AREA)
Abstract
The device for sucking and removing the post-chamber viscoelastic agent for the implantation of the central hole type artificial lens comprises a holding rod and a liquid suction head; a water injection pipe is connected along the outer wall of the holding rod; the holding rod comprises a holding part and an operating part; a finger pressure valve is connected between the holding part and the operation part; the holding part is connected with a through water suction pipe, and the operating part is connected with a through main suction pipe and an auxiliary suction pipe in a sleeve mode; the liquid inlet end of the finger pressure valve is connected with a three-way pipeline, and the finger pressure valve comprises a valve plate and a valve sleeve; the valve plate is provided with a valve hole, the valve sleeve is provided with an auxiliary suction pipe hole site and a main suction pipe hole site, and the two holes are arranged up and down and are both arranged on a path of the valve hole sliding along with the valve plate; the liquid suction head is positioned at the tail end of the operation part; a main suction pipe suction port and an auxiliary suction pipe suction port are arranged on the bottom surface of the liquid suction head; the main suction pipe is communicated with the main suction pipe, and the auxiliary suction pipe is communicated with the auxiliary suction pipe. The sucking device is used to extend the sucking head into the anterior chamber, the main sucking pipe mouth corresponds to the central opening of the artificial lens and the auxiliary sucking pipe mouth corresponds to the peripheral position of the central opening.
Description
Technical Field
The scheme belongs to the technical field of medical equipment, and particularly relates to a suction device and a use method of a post-operative room viscoelastic agent for central hole type artificial lens implantation.
Background
Clinically, posterior chamber intraocular lens Implantation (ICL) is widely used, which is based on the principle that a laser or a surgical knife is used to open 1 2-4 mm mouth on the eye, then a customized special lens is injected into the human eye through a syringe, and the position of the lens is just in the posterior chamber of the human eye (posterior chamber implantation scheme). Because of the special structure of the eyeball, a special and well-used instrument is lacking at present for assisting in the suction of the posterior chamber viscoelastic agent after the implantation of the artificial lens is completed.
Disclosure of Invention
In order to solve the technical problems, the technical scheme is based on a new thought, and provides a suction device of a posterior chamber viscoelastic agent for a central hole type artificial lens implantation operation, which comprises a holding rod and a liquid suction head; a water injection pipe is connected along the outer wall of the holding rod, and the axial direction of the water injection pipe is consistent with the length direction of the holding rod;
the holding rod comprises a holding part and an operating part; a finger pressure valve is connected between the holding part and the operation part;
the holding part is connected with a through water suction pipe;
the operation part is internally connected with a main suction pipe and an auxiliary suction pipe which are communicated in a sleeve mode; the main straw is arranged inside, and the auxiliary straw is arranged outside the outer wall of the main straw; the pipe wall of the main suction pipe is rigid, and the pipe wall of the auxiliary suction pipe is elastic;
the liquid inlet end of the finger pressure valve is connected with a three-way pipeline, and the liquid inlet end of the three-way pipeline is communicated with the water suction pipe; the two liquid outlet ends of the three-way pipeline are correspondingly communicated with the main suction pipe and the auxiliary suction pipe respectively under the control of the finger pressure valve;
the structure of the finger pressure valve comprises a valve plate and a valve sleeve;
the valve plate is in a strip-shaped flat plate shape, and a through valve hole is formed in the flat plate; the top end of the valve plate is provided with a pressing structure corresponding to a human finger, and an elastomer is connected between the valve plate and the valve sleeve;
a gap is formed in the middle of the valve sleeve, the valve plate is connected in the gap in a pressing/ejecting manner in a sliding manner, and a sealing structure is arranged between the valve plate and the gap;
two holes are formed in the valve sleeve, one hole is an auxiliary suction pipe hole, and the other hole is a main suction pipe hole; the auxiliary suction pipe hole site is connected between the auxiliary suction pipe and one liquid outlet end of the three-way pipeline; the main suction pipe hole site is connected between the main suction pipe and the other liquid outlet end of the three-way pipeline;
the two holes are arranged up and down and are both on the path that the valve holes slide along with the valve plate; setting a distance d between the auxiliary suction pipe hole site and the main suction pipe hole site, a diameter d1 of the auxiliary suction pipe hole site, a diameter d2 of the main suction pipe hole site and a diameter d3 of the valve hole, and d > (d1+d2)/2+d3; may be d1=d2=d3, d > d3;
the liquid suction head is positioned at the tail end of the operation part; the body of the liquid suction head is flat; a main suction pipe suction port and a plurality of auxiliary suction pipe suction ports (for example, 4 suction ports) are arranged on the bottom surface of the liquid suction head; the auxiliary suction openings are arranged around the main suction pipe suction opening; the water outlet of the water injection pipe is positioned at the liquid suction head; the main suction pipe is communicated with the main suction pipe, and the plurality of auxiliary suction pipe suction openings are communicated with the auxiliary suction pipes.
The position relationship between the main suction pipe mouth and each auxiliary suction pipe mouth is as follows: the main suction pipe mouth corresponds to the central opening position of the artificial lens, and the auxiliary suction pipe mouth corresponds to the peripheral part position of the central opening of the artificial lens.
One embodiment is: the auxiliary suction pipe hole is positioned at the upper part and the main suction pipe hole is positioned at the lower part.
Further optimizing to: the sealing structure between the valve plate and the slit is an elastic sealing material layer (such as silica gel).
In clinical practice, the pipette head is preferably sized to: 2mm thick and 3mm wide; the diameter of the suction opening of the main suction pipe is 1mm; the diameter range of the auxiliary suction pipe suction head is 0.5mm.
The elastic body is a pressure spring, one end of the pressure spring is connected with the pressing structure, and the other end of the pressure spring is connected with the outer wall of the valve plate.
Further, the liquid suction head is provided with a main chamber and an auxiliary chamber which are isolated from each other respectively; the main chamber is in the auxiliary chamber; the bottom surface of the main cavity is provided with a main suction pipe suction port, and one side of the main cavity, which is close to the operation part, is communicated with the main suction pipe; the bottom surface of the auxiliary chamber is provided with the auxiliary suction pipe suction port, and one side of the auxiliary chamber, which is close to the operation part, is communicated with the auxiliary suction pipe.
The following describes a method of using the suction device, taking the position of the auxiliary suction pipe hole as an example, and the position of the main suction pipe hole as follows:
firstly, the suction pipe of the holding part is connected to the suction port of the miniature suction pump, and the water injection pipe is connected to the purified water outlet pipe; then the liquid suction head is extended into the anterior chamber, the position is kept above the artificial lens, the main suction pipe suction port corresponds to the position of the central opening of the artificial lens, and the auxiliary suction pipe suction port corresponds to the position of the peripheral part of the central opening of the artificial lens; then the operation is carried out according to the following steps:
1) The valve hole corresponds to the position of the hole site of the auxiliary suction pipe by controlling the valve plate of the finger pressure valve, and only the auxiliary suction pipe is communicated with the suction pipe to suck the viscoelastic agent on the upper surface of the artificial lens;
then, the liquid suction head is pressed down, and at the moment, the suction port of the auxiliary suction pipe sucks the upper surface of the artificial lens; because the suction pipe continuously attracts, the auxiliary suction pipe is in a negative pressure state, and the elastic pipe wall of the auxiliary suction pipe is sunken;
2) Continuing to press down the valve plate of the finger-pressure valve to enable the valve plate above the valve hole to block the auxiliary suction pipe hole site; at the moment, the auxiliary suction pipe is disconnected from the suction pipe, the elastic pipe wall of the auxiliary suction pipe rebounds (or has a rebound tendency), continuous negative pressure is generated in the auxiliary suction pipe, and the auxiliary suction pipe suction port firmly attracts the artificial lens;
3) Slightly lifting the liquid suction head to slightly lift the artificial lens;
4) Continuing to press down the valve plate of the finger-pressure valve to enable the valve hole to correspond to the position of the hole of the main suction pipe, and only the main suction pipe is communicated with the suction pipe; the suction port of the main suction pipe sucks the viscoelastic agent on the lower surface of the artificial lens and the posterior chamber;
5) Finally, the valve plate of the whole finger pressure valve enables the valve hole to correspond to the position of the hole site of the auxiliary suction pipe, the auxiliary suction pipe is decompressed, and the artificial lens is separated from the suction port of the auxiliary suction pipe.
The device is convenient to use, and has higher operation accuracy and safety.
Drawings
FIG. 1 is a schematic view of the internal structure of the auxiliary device;
figure 2 is a schematic radial cross-sectional view of a pipette head;
FIG. 3 is a schematic radial cross-sectional view of a main body portion of the operating portion (schematic A-A in FIG. 1);
FIG. 4-1 is a schematic diagram of a valve plate structure of a pressure valve;
FIG. 4-2 is a schematic cross-sectional view of the valve housing of the pressure valve (in close proximity to the valve plate);
FIG. 5 is a schematic view showing the state of the auxiliary device in use in an eyeball;
in the figure: the surgical instrument comprises a holding rod 1, a liquid suction head 2, a water injection pipe 3, a holding part 4, an operation part 5, a water suction pipe 6, a finger pressure valve 7, a main suction pipe 8, an auxiliary suction pipe 9, a main suction pipe suction port 10, an auxiliary suction pipe suction port 11, a valve plate 12, a valve hole 13, a three-way pipeline 14, a main cavity 15, an auxiliary cavity 16, a cornea 17, an iris 18, a crystalline lens 19, an artificial lens 20, a suction device 21, a valve sleeve 22, an auxiliary suction pipe hole site 23, a main suction pipe hole site 24 and a pressure spring 25.
Detailed Description
The device is further described below with reference to the drawings and the detailed description:
1-4-2, a suction device for a post-operative atrial viscoelastic for a central hole type intraocular lens implant comprises a holding rod and a liquid suction head; a water injection pipe is connected along the outer wall of the holding rod, and the axial direction of the water injection pipe is consistent with the length direction of the holding rod;
the holding rod comprises a holding part and an operating part; a finger pressure valve is connected between the holding part and the operation part;
the holding part is connected with a through water suction pipe;
the operation part is internally connected with a main suction pipe and an auxiliary suction pipe which are communicated in a sleeve mode; the main straw is arranged inside, and the auxiliary straw is arranged outside the outer wall of the main straw; the pipe wall of the main suction pipe is rigid, and the pipe wall of the auxiliary suction pipe is elastic;
the liquid inlet end of the finger pressure valve is connected with a three-way pipeline, and the liquid inlet end of the three-way pipeline is communicated with the water suction pipe; the two liquid outlet ends of the three-way pipeline are correspondingly communicated with the main suction pipe and the auxiliary suction pipe respectively under the control of the finger pressure valve;
the structure of the finger pressure valve comprises a valve plate and a valve sleeve;
the valve plate is in a strip-shaped flat plate shape, and a through valve hole is formed in the flat plate; the top end of the valve plate is provided with a pressing structure corresponding to a human finger, and an elastomer is connected between the valve plate and the valve sleeve;
a gap is formed in the middle of the valve sleeve, the valve plate is connected in the gap in a pressing/ejecting manner in a sliding manner, and a sealing structure is arranged between the valve plate and the gap;
two holes are formed in the valve sleeve, one hole is an auxiliary suction pipe hole, and the other hole is a main suction pipe hole; the auxiliary suction pipe hole site is connected between the auxiliary suction pipe and one liquid outlet end of the three-way pipeline; the main suction pipe hole site is connected between the main suction pipe and the other liquid outlet end of the three-way pipeline;
the two holes are arranged up and down and are both on the path that the valve holes slide along with the valve plate; setting a distance d between the auxiliary suction pipe hole site and the main suction pipe hole site, a diameter d1 of the auxiliary suction pipe hole site, a diameter d2 of the main suction pipe hole site and a diameter d3 of the valve hole, d > (d1+d2)/2+d3, d1=d2=d3, and d > d3;
the liquid suction head is positioned at the tail end of the operation part; the body of the liquid suction head is flat; a main suction pipe suction port and a plurality of auxiliary suction pipe suction ports (for example, 4 suction ports) are arranged on the bottom surface of the liquid suction head; the auxiliary suction openings are arranged around the main suction pipe suction opening; the water outlet of the water injection pipe is positioned at the liquid suction head; the main suction pipe is communicated with the main suction pipe, and the plurality of auxiliary suction pipe suction openings are communicated with the auxiliary suction pipes.
The position relationship between the main suction pipe mouth and each auxiliary suction pipe mouth is as follows: the main suction pipe mouth corresponds to the central opening position of the artificial lens, and the auxiliary suction pipe mouth corresponds to the peripheral part position of the central opening of the artificial lens.
In this example: the auxiliary suction pipe hole is positioned at the upper part and the main suction pipe hole is positioned at the lower part. The sealing structure between the valve plate and the slit is an elastic sealing material layer (such as silica gel). The size of the liquid suction head is as follows: 2mm thick and 3mm wide; the diameter of the suction opening of the main suction pipe is 1mm; the diameter range of the auxiliary suction pipe suction head is 0.5mm. The elastic body is a pressure spring, one end of the pressure spring is connected with the pressing structure, and the other end of the pressure spring is connected with the outer wall of the valve plate.
The liquid suction head is provided with a main chamber and an auxiliary chamber which are isolated from each other respectively; the main chamber is in the auxiliary chamber; the bottom surface of the main cavity is provided with a main suction pipe suction port, and one side of the main cavity, which is close to the operation part, is communicated with the main suction pipe; the bottom surface of the auxiliary chamber is provided with the auxiliary suction pipe suction port, and one side of the auxiliary chamber, which is close to the operation part, is communicated with the auxiliary suction pipe.
Referring to fig. 5, the following description will be given of the method of using the present suction device, taking the position of the auxiliary suction pipe hole as an example, and the position of the main suction pipe hole as follows:
firstly, the suction pipe of the holding part is connected to the suction port of the miniature suction pump, and the water injection pipe is connected to the purified water outlet pipe; then the liquid suction head is extended into the anterior chamber, the position is kept above the artificial lens, the main suction pipe suction port corresponds to the position of the central opening of the artificial lens, and the auxiliary suction pipe suction port corresponds to the position of the peripheral part of the central opening of the artificial lens; then the operation is carried out according to the following steps:
1) The valve hole corresponds to the position of the hole site of the auxiliary suction pipe by controlling the valve plate of the finger pressure valve, and only the auxiliary suction pipe is communicated with the suction pipe to suck the viscoelastic agent on the upper surface of the artificial lens;
then, the liquid suction head is pressed down, and at the moment, the suction port of the auxiliary suction pipe sucks the upper surface of the artificial lens; because the suction pipe continuously attracts, the auxiliary suction pipe is in a negative pressure state, and the elastic pipe wall of the auxiliary suction pipe is sunken;
2) Continuing to press down the valve plate of the finger-pressure valve to enable the valve plate above the valve hole to block the auxiliary suction pipe hole site; at the moment, the auxiliary suction pipe is disconnected from the suction pipe, the elastic pipe wall of the auxiliary suction pipe rebounds (or has a rebound tendency), continuous negative pressure is generated in the auxiliary suction pipe, and the auxiliary suction pipe suction port firmly attracts the artificial lens;
3) Slightly lifting the liquid suction head to slightly lift the artificial lens;
4) Continuing to press down the valve plate of the finger-pressure valve to enable the valve hole to correspond to the position of the hole of the main suction pipe, and only the main suction pipe is communicated with the suction pipe; the suction port of the main suction pipe sucks the viscoelastic agent on the lower surface of the artificial lens and the posterior chamber;
5) Finally, the valve plate of the whole finger pressure valve enables the valve hole to correspond to the position of the hole site of the auxiliary suction pipe, the auxiliary suction pipe is decompressed, and the artificial lens is separated from the suction port of the auxiliary suction pipe.
Claims (7)
1. The device for sucking and removing the posterior chamber viscoelastic agent for the implantation of the central hole type artificial lens is characterized by comprising a holding rod and a liquid suction head; a water injection pipe is connected along the outer wall of the holding rod, and the axial direction of the water injection pipe is consistent with the length direction of the holding rod;
the holding rod comprises a holding part and an operating part; a finger pressure valve is connected between the holding part and the operation part;
the holding part is connected with a through water suction pipe;
the operation part is internally connected with a main suction pipe and an auxiliary suction pipe which are communicated in a sleeve mode; the main straw is arranged inside, and the auxiliary straw is arranged outside the outer wall of the main straw; the pipe wall of the main suction pipe is rigid, and the pipe wall of the auxiliary suction pipe is elastic;
the liquid inlet end of the finger pressure valve is connected with a three-way pipeline, and the liquid inlet end of the three-way pipeline is communicated with the water suction pipe; the two liquid outlet ends of the three-way pipeline are correspondingly communicated with the main suction pipe and the auxiliary suction pipe respectively under the control of the finger pressure valve;
the structure of the finger pressure valve comprises a valve plate and a valve sleeve;
the valve plate is in a strip-shaped flat plate shape, and a through valve hole is formed in the flat plate; the top end of the valve plate is provided with a pressing structure corresponding to a human finger, and an elastomer is connected between the valve plate and the valve sleeve;
a gap is formed in the middle of the valve sleeve, the valve plate is connected in the gap in a pressing/ejecting manner in a sliding manner, and a sealing structure is arranged between the valve plate and the gap;
two holes are formed in the valve sleeve, one hole is an auxiliary suction pipe hole, and the other hole is a main suction pipe hole; the auxiliary suction pipe hole site is connected between the auxiliary suction pipe and one liquid outlet end of the three-way pipeline; the main suction pipe hole site is connected between the main suction pipe and the other liquid outlet end of the three-way pipeline;
the two holes are arranged up and down and are both on the path that the valve holes slide along with the valve plate; setting a distance d between the auxiliary suction pipe hole site and the main suction pipe hole site, a diameter d1 of the auxiliary suction pipe hole site, a diameter d2 of the main suction pipe hole site and a diameter d3 of the valve hole, and d > (d1+d2)/2+d3;
the liquid suction head is positioned at the tail end of the operation part; the body of the liquid suction head is flat; a main suction pipe suction port and a plurality of auxiliary suction pipe suction ports are arranged on the bottom surface of the liquid suction head; the auxiliary suction openings are arranged around the main suction pipe suction opening; the water outlet of the water injection pipe is positioned at the liquid suction head; the main suction pipe is communicated with the main suction pipe, and the plurality of auxiliary suction pipe suction openings are communicated with the auxiliary suction pipes.
2. The suction device as claimed in claim 1, wherein the auxiliary suction pipe hole is located at an upper position and the main suction pipe hole is located at a lower position.
3. The suction device as set forth in claim 1 wherein the sealing structure between the valve plate and the slit is a layer of elastomeric sealing material.
4. The suction device of claim 1 wherein said pipette head is sized to: 2mm thick and 3mm wide; the diameter of the suction opening of the main suction pipe is 1mm; the diameter range of the auxiliary suction pipe suction head is 0.5mm.
5. The suction device according to claim 1, wherein the suction head is provided with a main chamber and an auxiliary chamber which are isolated from each other, respectively; the main chamber is in the auxiliary chamber;
the bottom surface of the main cavity is provided with a main suction pipe suction port, and one side of the main cavity, which is close to the operation part, is communicated with the main suction pipe;
the bottom surface of the auxiliary chamber is provided with the auxiliary suction pipe suction port, and one side of the auxiliary chamber, which is close to the operation part, is communicated with the auxiliary suction pipe.
6. The suction device according to claim 1, wherein the elastic body is a compression spring, one end of the compression spring is connected to the pressing structure, and the other end of the compression spring is connected to the outer wall of the valve plate.
7. The suction device of claim 1, wherein d1=d2=d3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811218070.9A CN109350353B (en) | 2018-10-18 | 2018-10-18 | Device for sucking and removing posterior chamber viscoelastic agent for central hole type artificial lens implantation and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811218070.9A CN109350353B (en) | 2018-10-18 | 2018-10-18 | Device for sucking and removing posterior chamber viscoelastic agent for central hole type artificial lens implantation and use method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109350353A CN109350353A (en) | 2019-02-19 |
| CN109350353B true CN109350353B (en) | 2023-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811218070.9A Active CN109350353B (en) | 2018-10-18 | 2018-10-18 | Device for sucking and removing posterior chamber viscoelastic agent for central hole type artificial lens implantation and use method |
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| CN (1) | CN109350353B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110236785A (en) * | 2019-07-15 | 2019-09-17 | 温州医科大学附属眼视光医院 | A negative pressure suction intraocular lens picker |
| CN112716689B (en) * | 2020-12-14 | 2023-09-15 | 微智医疗器械有限公司 | Ophthalmic surgical instrument |
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