CN204364220U - A kind of nucleus chopper for cataract - Google Patents
A kind of nucleus chopper for cataract Download PDFInfo
- Publication number
- CN204364220U CN204364220U CN201420808700.9U CN201420808700U CN204364220U CN 204364220 U CN204364220 U CN 204364220U CN 201420808700 U CN201420808700 U CN 201420808700U CN 204364220 U CN204364220 U CN 204364220U
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- China
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- cutter neck
- knife bar
- nucleus
- blunthook
- cataract
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Abstract
This utility model discloses a kind of nucleus chopper for cataract, belongs to ophthalmic medical instrument technical field.Nucleus chopper for cataract comprises handle, knife bar and cutter neck, handle, knife bar are connected successively with cutter neck, described cutter neck arranges blade, cutter neck and knife bar are 135 ° of angles, cutter neck end is provided with a blunthook, blunthook bending direction and cutter neck are reverse relative to the bending direction of knife bar, and the angle of blunthook and cutter neck is 90 °, and knife bar, cutter neck, blade and blunthook are all in same plane.This knife for nucleus cutting, without the need to entering anterior chamber from main otch, does not damage main otch, and anterior chamber stability is good; Only need one-handed performance at same position, both hands can operate at diverse location, can have enough working places.The effect using knife for nucleus cutting of the present utility model to carry out small incision non-phacoemulsification ECCE to reach, the effect reached with Phacoemulsification compares favourably, thus the cataract patient that cannot carry out Phacoemulsification can be allowed also to reach good visual quality after surgery.
Description
Technical field
This utility model provides a kind of nucleus chopper for cataract, belongs to ophthalmic medical instrument technical field.
Background technology
Cataract, especially senile cataract, be one of modal oculopathy, account for 25% to 50% of diseases causing blindness.According to statistics, there are 1,500 ten thousand cataract blinding patients the world today, and China's census statistics, about there are 400 to 500 ten thousand cataract patients.The most effective method of cataract therapy is operation, and by operative treatment, patient can recover vision.At present, treatment cataract mainly contains three kinds of methods such as conventional large otch ECCE, Phacoemulsification, small incision non-phacoemulsification ECCE, Phacoemulsification equipment investment is large, surgery cost is high, and large otch enucleation tissue injury major operation poor stability.Minimal incision * method utilizes knife for nucleus cutting that nucleus is split broken taking-up, and because its otch is little, recover fast, expense is low, the feature that Postoperative visual acuity has improved and widely using.
In current clinical manipulation, knife for nucleus cutting (chop hook) without blade applies to cataract surgery and splits core, but when splitting core for small incision non-phacoemulsification cataract operation, because action bars is cylindrical, cutting force is little, and discontinuity when splitting core, splits core direction and easily change, it is strong that strength strengthens counteracting force, easily causes nucleus lentis to abrade endothelium and damaging surrounding tissue; Core is not easily separated by cataract extraction in sclerotic nucleus cataract.The length of hook limits the mobility at eyeball, if auxiliary mouth is forward, easily causes nucleus lentis to abrade endothelium; If auxiliary mouth rearward, easily damage chamber-angle structure again.
In clinical manipulation, if chance stone, the normal knife for nucleus cutting used with blade at present, as the knife for nucleus cutting that CN01234927.5 announces, its blade is positioned at handle of a knife front end, being aligned is connected with cutter head, when patient operates, both hands are overlapping up and down, block visual field operation inconvenience, need expand main otch, operate closer to corneal endothelium, so easy corneal damage tissue.As the knife for nucleus cutting that CN200520051465.6 announces, cutter head rounding off curved surface foremost arranges blade, and need overturn cutter head when patient operates and just can split core, patient is difficult to see blade, not easily holds.As the knife for nucleus cutting that CN201020691906.X announces, blade place plane is vertical with cutter head with cutter neck, is not easy to enter ophthalmic, operating difficulties.These knife for nucleus cuttings above-mentioned all need to enter anterior chamber from main otch, and in same position row bimanualness, and working place is little, and anterior chamber is unstable, easy damaging surrounding tissue; If meet patient's operation quite difficulty that anterior chamber is shallow, and existing knife for nucleus cutting all can not enter anterior chamber from auxiliary mouth.
Therefore, be necessary to design that a kind of volume is little, operation technique is simple, esy to use, safe and reliable, wield knife for nucleus cutting.
Utility model content
Problems such as there is easy damaged tissue for solving existing knife for nucleus cutting, not easily holding, otch is large, this utility model provides a kind of nucleus chopper for cataract, carries out operation technique to realize entering anterior chamber from auxiliary mouth, reduces main otch.
This utility model is realized by following technical proposal: a kind of nucleus chopper for cataract, comprise handle, knife bar and cutter neck, handle, knife bar are connected successively with cutter neck, described cutter neck arranges blade, cutter neck and knife bar are 135 ° of angles, and cutter neck end is provided with a blunthook, blunthook bending direction and cutter neck reverse relative to the bending direction of knife bar, the angle of blunthook and cutter neck is 90 °, and described knife bar, cutter neck, blade and blunthook are all in same plane.
Described blade to be base angle the be isosceles trapezoid of 45 °.
The height of described isosceles trapezoid is 0.5mm.
The base length of described isosceles trapezoid is less than the length of cutter neck, and with knife bar end on, cutter neck end sky stays the gap of 1mm.
The length of described blunthook is 1.8 ~ 2mm.
The length of described cutter neck is 6 ~ 8mm.
The length of described knife bar is 15 ~ 20mm.
Described blade and cutter neck junction thickness are 0.5mm.
The diameter of described blunthook is 0.5mm.
The diameter of described knife bar is 0.5 ~ 1mm.Knife bar can be the cone cylinder that cylinder, polygon cylinder or the thin handle end of end are thick.
During use, knife for nucleus cutting of the present utility model is entered anterior chamber by assisting mouth, make its vertical with nucleus lentis along central authorities blades by core cleave in two or less, utilize crystalline lens wire loop, nucleus lentis, the frictional force of knife for nucleus cutting three and counteracting force, take advantage of a situation and to be given birth to along tunnel by main otch side nucleus lentis with crystalline lens wire loop, residual nucleus rotate along its leptoprosopy and give birth to.Main otch and auxiliary incision are 90 °, and one holds crystalline lens wire loop and enters ophthalmic from main otch, and another holds knife for nucleus cutting and enters ophthalmic from auxiliary incision, can at 80 ~ 150 ° of angle-adjustables when knife for nucleus cutting splits core.Aforesaid operations maneuver is all applicable to split in non phacoemulsification, pouch in core, half pouch split in core, anterior chamber splits core.What this knife for nucleus cutting was also applicable to the fixing eyeball of cataract operation and cataract surgery splits core.When operating cataract surgery, selecting cutter neck length degree to be 6mm, being more conducive to operation.When operating non phacoemulsification, cutter neck length degree is selected to be 7 ~ 8mm.
The advantage that this utility model possesses: the knife for nucleus cutting that this utility model provides, without the need to entering anterior chamber from main otch, does not damage main otch, and anterior chamber stability is good; Only need one-handed performance at same position, both hands can operate at diverse location, can have enough working places.This utility model, by the blunthook of front end, fixes nucleus lentis ambitus, not easily damaging surrounding tissue; By blade, split core compliance good, not malleable direction, operation accurate stable.Knife for nucleus cutting of the present utility model selects art formula wide, can be used in following operation technique:
(1) for splitting core in cataract surgery;
(2) core is split for the various nucleus lentis of small incision non-phacoemulsification cataract operation;
(3) for fixing eyeball in cataract operation;
(4) core is split for splitting in pouch in core, half pouch to split in core, anterior chamber.
Therefore, knife for nucleus cutting of the present utility model has the feature of a cutter several functions, can reduce number of operations in art, easy to use, improves procedure efficiency.Utilize knife for nucleus cutting of the present utility model to carry out cataract and split core Post operation, operative incision is 3 ~ 4mm, and the operative incision comparing existing knife for nucleus cutting reduces 10 ~ 11mm, and post-operative recovery is fast, and vision improves.For the patient that anterior chamber is shallow, utilize in half pouch or in pouch and split core, operation technique is also very convenient.The effect using knife for nucleus cutting of the present utility model to carry out small incision non-phacoemulsification ECCE to reach, the effect reached with Phacoemulsification compares favourably, thus the cataract patient that cannot carry out Phacoemulsification can be allowed also to reach good visual quality after surgery.
Accompanying drawing explanation
Fig. 1 is knife for nucleus cutting structural representation of the present utility model.
In figure, 1-handle, 2-knife bar, 3-cutter neck, 4-blunthook, 5-blade.
Detailed description of the invention
Below by drawings and Examples, this utility model is described further.
Embodiment 1
As Fig. 1, nucleus chopper for cataract comprises handle 1, knife bar 2 and cutter neck 3, handle 1, knife bar 2 are connected successively with cutter neck 3, described cutter neck 3 arranges blade 5, cutter neck 3 and knife bar 2 are in 135 ° of angles, and cutter neck 3 end is provided with a blunthook 4, blunthook 4 bending direction and cutter neck 3 reverse relative to the bending direction of knife bar 2, blunthook 4 is 90 ° with the angle of cutter neck 3, and described knife bar 2, cutter neck 3, blade 5 and blunthook 4 are all in same plane; Blade 5 to be base angles the be isosceles trapezoid of 45 °; The height of isosceles trapezoid is 0.5mm; The base length of isosceles trapezoid is less than the length of cutter neck 3, and with knife bar 2 end on, cutter neck 3 end sky stays the gap of 1mm; The length of blunthook 4 is 2mm; The length of cutter neck 3 is 8mm; The length of knife bar 2 is 20mm; Blade 5 and cutter neck 3 junction thickness are 0.5mm; The diameter of blunthook 4 is 0.5mm; The diameter of knife bar 2 is 1mm.
During use, knife for nucleus cutting of the present utility model is entered anterior chamber by assisting mouth, make its vertical with nucleus lentis along central authorities blades by core cleave in two or less, utilize crystalline lens wire loop, nucleus lentis, the frictional force of knife for nucleus cutting three and counteracting force, take advantage of a situation and to be given birth to along tunnel by main otch side nucleus lentis with crystalline lens wire loop, residual nucleus rotate along its leptoprosopy and give birth to.Main otch and auxiliary incision are 90 °, and one holds crystalline lens wire loop and enters ophthalmic from main otch, and another holds knife for nucleus cutting and enters ophthalmic from auxiliary incision, can at 80 ~ 150 ° of angle-adjustables when knife for nucleus cutting splits core.
Embodiment 2
As Fig. 1, nucleus chopper for cataract comprises handle 1, knife bar 2 and cutter neck 3, handle 1, knife bar 2 are connected successively with cutter neck 3, described cutter neck 3 arranges blade 5, cutter neck 3 and knife bar 2 are in 135 ° of angles, and cutter neck 3 end is provided with a blunthook 4, blunthook 4 bending direction and cutter neck 3 reverse relative to the bending direction of knife bar 2, blunthook 4 is 90 ° with the angle of cutter neck 3, and described knife bar 2, cutter neck 3, blade 5 and blunthook 4 are all in same plane; Blade 5 to be base angles the be isosceles trapezoid of 45 °; The height of isosceles trapezoid is 0.5mm; The base length of isosceles trapezoid is less than the length of cutter neck 3, and with knife bar 2 end on, cutter neck 3 end sky stays the gap of 1mm; The length of blunthook 4 is 1.8mm; The length of cutter neck 3 is 6mm; The length of knife bar 2 is 15mm; Blade 5 and cutter neck 3 junction thickness are 0.5mm; The diameter of blunthook 4 is 0.5mm; The diameter of knife bar 2 is 0.5mm.
Embodiment 3
As Fig. 1, nucleus chopper for cataract comprises handle 1, knife bar 2 and cutter neck 3, handle 1, knife bar 2 are connected successively with cutter neck 3, described cutter neck 3 arranges blade 5, cutter neck 3 and knife bar 2 are in 135 ° of angles, and cutter neck 3 end is provided with a blunthook 4, blunthook 4 bending direction and cutter neck 3 reverse relative to the bending direction of knife bar 2, blunthook 4 is 90 ° with the angle of cutter neck 3, and described knife bar 2, cutter neck 3, blade 5 and blunthook 4 are all in same plane; Blade 5 to be base angles the be isosceles trapezoid of 45 °; The height of isosceles trapezoid is 0.5mm; The base length of isosceles trapezoid is less than the length of cutter neck 3, and with knife bar 2 end on, cutter neck 3 end sky stays the gap of 1mm; The length of blunthook 4 is 1.9mm; The length of cutter neck 3 is 7mm; The length of knife bar 2 is 18mm; Blade 5 and cutter neck 3 junction thickness are 0.5mm; The diameter of blunthook 4 is 0.5mm; The diameter of knife bar 2 is 0.8mm.
Claims (10)
1. a nucleus chopper for cataract, comprise handle, knife bar and cutter neck, handle, knife bar are connected successively with cutter neck, it is characterized in that: described cutter neck arranges blade, cutter neck and knife bar are 135 ° of angles, and cutter neck end is provided with a blunthook, blunthook bending direction and cutter neck reverse relative to the bending direction of knife bar, the angle of blunthook and cutter neck is 90 °, and described knife bar, cutter neck, blade and blunthook are all in same plane.
2. nucleus chopper for cataract according to claim 1, is characterized in that: described blade to be base angle the be isosceles trapezoid of 45 °.
3. nucleus chopper for cataract according to claim 2, is characterized in that: the height of described isosceles trapezoid is 0.5mm.
4. nucleus chopper for cataract according to claim 2, is characterized in that: the base length of described isosceles trapezoid is less than the length of cutter neck, and with knife bar end on, cutter neck end sky stays the gap of 1mm.
5. nucleus chopper for cataract according to claim 1, is characterized in that: the length of described blunthook is 1.8 ~ 2mm.
6. nucleus chopper for cataract according to claim 1, is characterized in that: the length of described cutter neck is 6 ~ 8mm.
7. nucleus chopper for cataract according to claim 1, is characterized in that: the length of described knife bar is 15 ~ 20mm.
8. nucleus chopper for cataract according to claim 1, is characterized in that: described blade and cutter neck junction thickness are 0.5mm.
9. nucleus chopper for cataract according to claim 1, is characterized in that: the diameter of described blunthook is 0.5mm.
10. nucleus chopper for cataract according to claim 1, is characterized in that: the diameter of described knife bar is 0.5 ~ 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420808700.9U CN204364220U (en) | 2014-12-19 | 2014-12-19 | A kind of nucleus chopper for cataract |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420808700.9U CN204364220U (en) | 2014-12-19 | 2014-12-19 | A kind of nucleus chopper for cataract |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204364220U true CN204364220U (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420808700.9U Expired - Fee Related CN204364220U (en) | 2014-12-19 | 2014-12-19 | A kind of nucleus chopper for cataract |
Country Status (1)
| Country | Link |
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| CN (1) | CN204364220U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105213092A (en) * | 2015-09-02 | 2016-01-06 | 严若华 | A kind of combined type cataract ultrasonic emulsification crystalline lens multilamellar core splitting hook |
| WO2016198028A1 (en) * | 2015-06-09 | 2016-12-15 | 首都医科大学附属北京同仁医院 | Reverse-type nucleus chopping hook for cataract surgery |
| CN107625578A (en) * | 2017-09-25 | 2018-01-26 | 徐雯 | A kind of Multifunctional cataract surgical assistor |
-
2014
- 2014-12-19 CN CN201420808700.9U patent/CN204364220U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016198028A1 (en) * | 2015-06-09 | 2016-12-15 | 首都医科大学附属北京同仁医院 | Reverse-type nucleus chopping hook for cataract surgery |
| CN105213092A (en) * | 2015-09-02 | 2016-01-06 | 严若华 | A kind of combined type cataract ultrasonic emulsification crystalline lens multilamellar core splitting hook |
| CN107625578A (en) * | 2017-09-25 | 2018-01-26 | 徐雯 | A kind of Multifunctional cataract surgical assistor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Dai Hongmei Inventor after: Wu Bingcheng Inventor after: Li Lan Inventor before: Dai Hongmei |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: DAI HONGMEI TO: DAI HONGMEI WU BINGCHENG LI LAN |
|
| C56 | Change in the name or address of the patentee | ||
| CB03 | Change of inventor or designer information |
Inventor after: Dai Hongmei Inventor after: Zhang Yuanping Inventor after: Wu Bingcheng Inventor after: Li Lan Inventor before: Dai Hongmei Inventor before: Wu Bingcheng Inventor before: Li Lan |
|
| COR | Change of bibliographic data | ||
| CP02 | Change in the address of a patent holder |
Address after: 650011 No. 504, Xishan District, Yunnan, Qingnian Road, Kunming Patentee after: Dai Hongmei Address before: 650011 No. 504, Wuhua, Kunming District, Yunnan, Qingnian Road Patentee before: Dai Hongmei |
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| 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: 20150603 Termination date: 20191219 |