CN215534663U - Iris expander - Google Patents
Iris expander Download PDFInfo
- Publication number
- CN215534663U CN215534663U CN202120694138.1U CN202120694138U CN215534663U CN 215534663 U CN215534663 U CN 215534663U CN 202120694138 U CN202120694138 U CN 202120694138U CN 215534663 U CN215534663 U CN 215534663U
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- China
- Prior art keywords
- iris
- section
- expander
- expansion
- iris expander
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- 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.)
- Expired - Fee Related
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- 239000000463 material Substances 0.000 claims abstract description 18
- 210000001747 pupil Anatomy 0.000 claims abstract description 18
- 239000004743 Polypropylene Substances 0.000 claims description 14
- 229920001155 polypropylene Polymers 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 12
- -1 acryl Chemical group 0.000 claims description 8
- 229920001971 elastomer Polymers 0.000 claims description 6
- 239000000806 elastomer Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 230000006837 decompression Effects 0.000 claims description 2
- 210000000887 face Anatomy 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 229920000800 acrylic rubber Polymers 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 229920000058 polyacrylate Polymers 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 10
- 230000001179 pupillary effect Effects 0.000 abstract description 2
- 230000006378 damage Effects 0.000 description 5
- 239000003814 drug Substances 0.000 description 5
- 229940079593 drug Drugs 0.000 description 5
- 238000002156 mixing Methods 0.000 description 4
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 4
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 4
- 238000001356 surgical procedure Methods 0.000 description 4
- 230000035882 stress Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000010339 dilation Effects 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- 208000012260 Accidental injury Diseases 0.000 description 1
- 206010002198 Anaphylactic reaction Diseases 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 208000003455 anaphylaxis Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 230000009894 physiological stress Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to the field of medical ophthalmologic operation auxiliary instruments, in particular to an iris expander, which is an instrument for temporarily supporting iris to expand pupils in the implementation process of a pupillary region operation and playing a role in assisting ophthalmologic operation. The iris expander is made of safe and environment-friendly materials and mainly comprises: expansion groove, fixing point, expansion pressure section, outward support section, one-way pressure release valve, syringe type suction pump, one-way pressure valve, and non-elastic net. The iris expander is used for solving the problems that the iris expander in the existing ophthalmic operation is bad for expanding the pupils of the eyes, the smooth operation is influenced and the like. The iris expander expands the diameter by a simple hydraulic means, and achieves the purposes of sufficient pupil expansion, safe operation and high working efficiency in the process of ophthalmic operation.
Description
Technical Field
The utility model relates to the field of medical ophthalmologic operation auxiliary instruments, in particular to an iris expander which temporarily supports an iris to expand a pupil in the implementation process of a pupillary region operation and plays a role in assisting the ophthalmologic operation.
Background
In the field of medical ophthalmic surgery, it is sometimes necessary to dilate the pupil in order to observe the internal condition of the eye, but the pupil may contract involuntarily due to its own physiological stress during the operation. Therefore, a medical instrument is needed to open the pupil so that the operation can be performed smoothly.
At present, the existing iris dilator has a direct outward hook pulling mode which is directly violent and has larger injury to the iris. This drag hook material is flexible material or rigid material, and flexible material is mostly nylon or silica gel, and the drawback is elasticity big, and the dynamics is not enough, keeps the dynamics to continuously apply external force. The rigidity material is mostly titanium alloy, and the easy accidental injury eye tissue of metal material is exerted the dynamics simultaneously and is difficult to control.
In addition, a mode of expanding pupils and preventing pupils from shrinking by using pharmacology is provided, the pharmacology mode has the defects of possibly causing drug anaphylactic reaction, insensitivity of patients to drugs, non-lasting drug action effect, easy failure of drug pupils when the drug pupils are scattered and physical and mechanical external forces are encountered, and the like, and brings operation risks to the patients.
The pupil area has harsh conditions during surgery, for example, the middle area of the pupil must be reserved, as shown in the gray area of fig. 2, which is used for the surgical instrument operating area and cannot have any sight line blocking. Furthermore, a surgical instrument access must be reserved, as indicated by the dashed lines in fig. 2.
Disclosure of Invention
Aiming at the defects of large damage to the iris, low working efficiency, inconvenient use and the like of the prior iris expander and the use method thereof in the ophthalmologic operation process, the utility model aims to research and develop the iris expander which is made of safe and environment-friendly materials and realizes the purposes of small iris expansion damage, safe operation and high working efficiency in the ophthalmologic operation process by functions of simple and convenient hydraulic means and the like.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
1. an iris expander, comprising essentially: expanding the groove; a fixed point; expanding the pressure section; an outward support section; a one-way pressure relief valve; a syringe-type suction pump; a one-way pressurizing valve; there is no elastic net.
The expansion groove is in an open circular ring shape and is positioned at the outermost end of the expander, the inner diameter surface of the circular ring of the expansion groove is connected with the outward supporting sections through fixing points, each outward supporting section is connected through an expansion pressure section, the outward supporting sections are in a hollow tubular structure, and the expansion pressure sections are also tubular passages; the outward support section and the expansion pressure section may be in fluid communication.
A one-way pressure valve is arranged inside the foremost end of the top end of the outward supporting section; and a one-way pressure release valve is arranged inside the final top end of the outward supporting section.
When the diameter of the iris expander is expanded and pressurized, a pump nozzle of the syringe type suction pump is inserted into the one-way pressurizing valve and is injected with liquid; when the iris expander needs to be contracted and decompressed, the pump nozzle of the syringe type suction pump is inserted into the one-way decompression valve to pump out liquid.
An inelastic web is applied over each outwardly supported section in order to ensure rigidity of the outwardly supported section and thereby generate a radial force with outwardly supported expansion grooves.
2. The iris expander is characterized in that the expansion groove is in an open ring shape, the groove opening is outward, and the iris expander is made of medical silica gel.
3. The iris expander is characterized in that the outward supporting section is of a hollow tubular structure and is made of a blending material of a propylene-based elastomer and polypropylene (PP).
4. The iris expander is characterized in that the outward supporting section is externally coated with an inelastic net, and all sections are communicated through the expanding pressure section.
5. The iris expander is characterized in that the one-way pressurizing valve and the one-way pressure relief valve are both made of a blended material of an allyl elastomer and polypropylene (PP), and the valve shape is inward.
Due to the adoption of the technical scheme, the utility model has the following beneficial effects:
1. the iris expander expansion groove is an unclosed semicircular groove, wherein the groove is sunken outwards, namely the semicircular groove is just buckled with the circular iris pupil collar, so that the stress condition of several points of other existing iris expanders is avoided, the iris edge is uniformly stressed, and damage is reduced.
2. The expansion principle of the iris expander is that a syringe type suction pump is adopted to inject liquid to generate a hydraulic mode, and the expansion force is controlled well, so that the operation safety is improved. In addition, the syringe type suction pump is easy to realize, and the medical injector can be replaced by slightly changing the syringe, thereby being convenient for local materials.
3. The iris dilator is made of medical environment-friendly materials, and is safe and non-toxic.
Description of the drawings:
FIG. 1 is a schematic view of the principle of dilation of an iris dilator according to the present invention;
FIG. 2 is a schematic view of a pre-prepared area of an iris dilator in accordance with the present invention;
FIG. 3 is an enlarged schematic view of a one-way pressurizing valve of an iris dilator according to the present invention;
FIG. 4 is an enlarged schematic view of a one-way pressure release valve of an iris dilator according to the present invention;
FIG. 5 is a schematic view of an iris expander according to the present invention in an expanded state;
in the figure, 1, expanding the groove; 2. a fixed point; 3. expanding the pressure section; 4. an outward support section; 5. a one-way pressure relief valve; 6. a syringe-type suction pump; 7. a one-way pressurizing valve; 8. there is no elastic net.
The specific implementation mode is as follows:
the utility model will be further explained with reference to the accompanying drawings.
As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the iris expander of the present invention is an auxiliary instrument used in an ophthalmic surgery, and particularly a medical instrument used for expanding an iris, preventing pupil contraction, and ensuring smooth performance of the surgery. Wherein mainly include: expanding the groove 1; a fixed point 2; expanding the pressure section 3; an outward support section 4; a one-way pressure relief valve 5; a syringe type suction pump 6; a one-way pressurizing valve 7; without the elastic net 8.
The concrete structure is as follows:
as shown in fig. 1, an iris expander is provided with a semi-open circular ring-shaped expansion groove 1 at the outer part and an outward supporting section 4 at the inner part, the inner diameter surface of the circular ring of the expansion groove 1 is connected with one end of the outward supporting section 4 through a fixing point 2, the other end of the outward supporting section 4 is communicated with an expansion pressure section 3, and the expansion pressure section 3 is a tubular passage; the two outward supporting segments 4 form a V-shape with one expanding pressure segment 3.
As shown in fig. 1, a non-elastic net 8 is laid over each of the outwardly supported sections 4; the one-way pressurizing valve 7 is disposed inside the top end of the outward support section 4 of the first section with the valve flap shaped inward, and as shown in fig. 4, the one-way pressure relief valve 5 is disposed inside the top end of the outward support section 4 of the last section. Likewise, the flap-like flap faces inwardly.
The working principle and the realization method of the utility model are as follows:
the general working principle of the utility model is that the elastic pipeline generates axial force by adopting hydraulic pressure, and then the rigid outward supporting section 4 is extruded to generate radial force relative to the expansion groove 1, thereby expanding the whole diameter of the expansion groove 1 and achieving the aim of safely and slowly expanding the iris.
The specific operation steps are as follows:
the iris expander is implanted into eyes, the expansion groove 1 of the iris expander is an unclosed semicircular annular groove, the groove is sunken outwards, namely the semicircular arc groove is just buckled with a circular iris pupil collar, the stress conditions of points of other existing iris expanders are avoided, the method enables the stress of the iris edge to be uniform, and damage is reduced.
Further, the syringe type suction pump 6 sucks in liquid, (the liquid may be normal medical physiological saline or other non-toxic and harmless liquid, and other more viscous liquid such as a viscous agent is selected to be more beneficial to maintaining the state of the expanded groove 1 after injection, and no specific limitation is made to the liquid here.) the needle-shaped pump nozzle of the syringe type suction pump 6 is inserted into the one-way pressurizing valve 7 and is injected and pressed towards the outward supporting section 4, as shown in fig. 3. Through the outwardly supported section 4 of the tubular structure into the expanding pressure section 3.
The material of the expansion pressure section 3 is a blending material of a propylene-based elastomer and polypropylene (PP), and the material has good toughness, elasticity and expansibility, namely extensibility after injection and compression. The expansion pressure section 3 is expanded to generate centripetal force as shown by the inner arrow in fig. 1, the outward support sections 4 are pushed to move outwards, and when the V-shape formed by the two outward support sections 4 and one expansion pressure section 3 is gradually pushed to be close to a flat straight line shape, the section between the two fixed points 2 of the expansion groove 1 is forced to expand as shown by the outer arrows in fig. 1.
The expansion groove 1 is made of silicic acid gel, namely medical silica gel, has good elastic deformation capacity, and the sections between the other two fixing points 2 of the expansion groove 1 are expanded one by one. By analogy, the diameter of the whole expander is increased, and the aim of expanding the iris is achieved.
The outer surface of the outward supporting section 4 is covered with an elastic net 8 made of a blending material of a propylene-based elastomer and polypropylene (PP), so that the outward supporting section 4 is ensured to have rigidity and to have slight extension in the axial direction, but the rigidity is kept in the radial direction, and the outward supporting section can play a role in pushing, supporting and expanding the groove 1.
After the iris dilation device is expanded, as shown in fig. 5, the syringe type suction pump 6 is pulled out, at this time, the one-way pressurizing valve 7 is of a structure with a valve flap inward, and the one-way pressurizing valve is made of a blending material of a propylene-based elastomer and polypropylene (PP), so that the one-way pressurizing valve has the characteristics of toughness, elasticity, transparency and the like, after the outward supporting section 4 is filled with liquid, the internal pressure is outward, the valve flap of the one-way pressurizing valve 7 is subjected to pressure self-sealing, and on the same principle, the one-way pressure relief valve 5 is in a self-sealing state.
At this time, the iris is in an expanded state, so that the operation can be smoothly performed without controlling the expander by external force. The purpose of convenience, rapidness and convenience in the operation process is achieved.
After the operation is finished, the needle cylinder type suction pump 6 is inserted into the one-way pressure release valve 5 to suck out the liquid in the outward supporting section 4, as shown in fig. 4, the expansion pressure section 3 releases the pressure, the iris expander restores to the initial state, the iris expander is taken out, and the pupil contracts.
Description of the drawings: as far as the skilled person is concerned, the iris expander is expanded integrally to generate axial force and is in the shape of an open semi-ring, so that the iris expander can expand axially after applying pressure, the utility model is explained as follows: because the iris edge is circular, the expansion groove 1 of the iris expander is buckled with the iris, the axial extension of the iris expander is limited, and the working state of the iris expander can be adjusted by using auxiliary tools such as operating forceps and the like in the operation process.
The iris expander is only a brief description of the main technical principle and structure of the iris expander, and the actual instrument is more complex and precise than the description. One of ordinary skill in the art will understand that: the technical solutions mentioned above can still be modified, or some technical features can be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. An iris expander, characterized in that it mainly comprises: expanding the groove; a fixed point; expanding the pressure section; an outward support section; a one-way pressure relief valve; a syringe-type suction pump; a one-way pressurizing valve; a non-elastic net;
the expansion groove is in an open circular ring shape and is positioned at the iris pupil collar, the inner diameter surface of the circular ring of the expansion groove is connected with the outward supporting sections through fixing points, each outward supporting section is connected through an expansion pressure section, and the expansion pressure section is a tubular passage; a one-way pressure valve is arranged inside the foremost end of the top end of the outward supporting section; a one-way pressure relief valve is arranged inside the top end of the last section of the outward supporting section;
when the diameter of the iris expander is expanded and pressurized, a pump nozzle of the syringe type suction pump is inserted into the one-way pressurizing valve and is injected with liquid; when the iris expander needs to be contracted and decompressed, a pump nozzle of the syringe type suction pump is inserted into the one-way decompression valve to pump out liquid;
a non-elastic net is coated on the surface of each outward supporting section.
2. An iris expander as claimed in claim 1, wherein the expanding groove is in the shape of an open ring, and the mouth of the groove faces outwards and is made of medical silica gel.
3. An iris expander as in claim 1, wherein the outward supporting section is a hollow tubular structure made of a blend of acryl elastomer and polypropylene (PP).
4. An iris expander as in claim 1 or 3, wherein the outer surface of the outward supporting section is covered with an inelastic net, and the sections are connected by an expansion pressure section.
5. An iris expander as in claim 1 or 4, wherein the expansion pressure section is a hollow tubular structure, and the outward support section and the expansion pressure section are in fluid communication.
6. An iris dilator according to claim 1, characterized in that the materials of the one-way pressurizing valve and the one-way pressure relief valve are all the blended materials of acrylic elastomer and polypropylene (PP), and the valve shape is inward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120694138.1U CN215534663U (en) | 2021-04-06 | 2021-04-06 | Iris expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120694138.1U CN215534663U (en) | 2021-04-06 | 2021-04-06 | Iris expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215534663U true CN215534663U (en) | 2022-01-18 |
Family
ID=79855616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120694138.1U Expired - Fee Related CN215534663U (en) | 2021-04-06 | 2021-04-06 | Iris expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215534663U (en) |
-
2021
- 2021-04-06 CN CN202120694138.1U patent/CN215534663U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220118 |