CN102327159B - Dual-purpose vitreous body cutting head - Google Patents
Dual-purpose vitreous body cutting head Download PDFInfo
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- CN102327159B CN102327159B CN 201110237605 CN201110237605A CN102327159B CN 102327159 B CN102327159 B CN 102327159B CN 201110237605 CN201110237605 CN 201110237605 CN 201110237605 A CN201110237605 A CN 201110237605A CN 102327159 B CN102327159 B CN 102327159B
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- mobile member
- vitreous body
- cutting
- cut length
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Abstract
The invention discloses a dual-purpose vitreous body cutting head which comprises an insertion component with an inner cavity, and a hollow moving component, wherein the hollow moving component is installed in the inner cavity and reciprocates, at least two side holes are formed on the side edge of the insertion component, the bottom of the moving component is opened, an opening is formed on the side wall of the moving component, and upper and lower edges of the opening are incisions. The cutting head is characterized in that the bottom opening of the moving component is a cutting segment, the projections of the cutting segment and the opening on the side wall in the axial direction are not overlapped, the working states of a vitreous body cutter can be switched through the relative rotation of the moving component and the insertion component, and the vitreous body cutter has at least two working states, i.e. A. the cutting segment passes through the holes on the side edge of the insertion component when the moving component reciprocates, and B. all the openings on the side wall pass through the holes on the side edge of the insertion component when the moving component reciprocates. By using the cutting head, the vitreous body cutter has small cutting fluctuation and high cutting efficiency, and can be used for conveniently cutting the vitreous body near the retina.
Description
Technical field
The present invention relates to medical apparatus and instruments, especially a kind of for the Vitrea dual-purpose vitreous body cutting head of cutting ophthalmic.
Background technology
Vitreous cutter is the device that the vitreous body in eyes is cut and draws at operation process, in existing vitreous cutter such as Chinese invention patent application CN1431889A or described in Chinese utility model patent CN2440479, as depicted in figs. 1 and 2, generally include interface members 302, have the insertion member 304 of inner chamber 314 and near the lateral cavity 308 of its end points.This cutting and suction device 300 further comprise mobile member 310 its have to cut cut end 312, this mobile member 310 is arranged in inner chamber 314 and is upper and be mechanically to be connected with interface members 302 in operation.This mobile member 310 capable of circulation reciprocally moving forward and backward and drive the sickle front end in inner chamber 314.More particularly, this mobile member cut end 312 can after move, cross the lateral cavity 308 near end points 306 of inserting member 304, so the material that is placed in lateral cavity is one after the other by cutting 312 cuttings of end.This interface members 302 comprises suction inlet 320, and it is connected to suction source (not shown) by sucking line 322.This suction inlet 320 can carry out liquid with 314 of inner chambers and exchange, so the material of near the liquid mobile member 310 and cutting-out is discharged via the inner chamber sucking-off and by suction inlet.This mobile member 310 moves circularly by sickle front end 330, so the vitreous body material that scales off can be continuously from inner chamber 314 sucking-offs, and can not stop up.
Can find out in above-mentioned vitreous cutter, the movement of mobile member 310 is cut into the continuous absorption that impulse movement is unfavorable for suction inlet 320.
A kind of improvement project is proposed in Chinese invention patent 200910303698.3 for this reason, be provided with two or more holes on the insertion member, and be provided with a hole on the mobile member of hollow, distance between two adjacent holes is less than distance following on the hole, when mobile member moves back and forth in the insertion member, upper following and edge mate hole in hole is completed the glass-cutting body, and vitreous body is via the inner sucking-off of the mobile member of hollow.This kind sickle can keep the seriality of cutting, being convenient to suction device draws, reduced the pressure oscillation that causes because of interrupted cutting action, but owing to inserting the hole that has on member more than 2, and the hole is to move back and forth between hole, cause this kind sickle to use and inconvenience when the contiguous amphiblestroid vitreous body of cutting, often need to change other vitreous cutter cooperatings.
Summary of the invention
The objective of the invention is: for the deficiencies in the prior art, provide one simple in structure, use safety, vitreous cutter easily.
a kind of dual-purpose vitreous body cutting head, comprise the insertion member with inner chamber and the mobile member that is arranged on the hollow that moves reciprocatingly in inner chamber, have on the side that inserts member and be no less than 2 lateral cavity, has a perforate on mobile member, the two edges up and down of this perforate are otch, it is characterized in that: there is one section cut length described mobile member bottom, this cut length and perforate projection does not in the axial direction overlap, can be by relatively rotating a certain angle to switch the duty of mobile member between mobile member and insertion member, mobile member has two kinds of duties at least, be A, mobile member has and only has the bottom cut length through inserting the lateral cavity on member when moving reciprocatingly, B, mobile member perforate process when moving reciprocatingly is inserted the lateral cavity on member.
Supplementary technology scheme of the present invention is as follows:
Preferably, insert the member member rotation that can relatively move.
Preferably, mobile member can insert the member rotation relatively.
Preferably, have 2 holes on the side of insertion member.
Preferably, inserting the scale marker that has on member.
Preferably, when mobile member was in the A duty, the bottom cut length only coordinated cutting with insertion member lateral cavity bottom when moving back and forth.
Preferably, also be provided with one section second cut length in the mobile member bottom, this second cut length and perforate projection in the axial direction overlaps, when mobile member is in the B duty, mobile member when moving reciprocatingly perforate and the second cut length all through the lateral cavity on the insertion member.When mobile member with insert the relative rotation of member after when entering the B duty, mobile member is in the reciprocating motion process, bottom cut length and side-wall hole coordinate cutting with two lateral cavity of insertion member.Take the embodiment of this mode can improve the cutting efficiency of vitreous cutter under the B duty.
Preferably, under the A duty, in motor process, there is and only has the bottom cut length through inserting on member the lateral cavity of below at mobile member.
Preferably, mobile member is also by Stroke Control switch operating state, and further comprise the C duty: rotate the relative angle to the B duty between mobile member and insertion parts, by the Stroke Control mobile member have in motor process and only have the bottom cut length through insertion member below lateral cavity.The C duty can reach and the identical cutting effect of A duty, also can conveniently cut the vitreous body near the retina place.Reach and the identical cutting effect of A duty, also can conveniently cut the vitreous body near the retina place.
The invention has the beneficial effects as follows: under the B duty, perforate on mobile member has to be no less than between 2 holes on the side that inserts member moves, all can form cutting action in moving back and forth process, the seriality that has kept cutting, being convenient to suction device draws, reduce the pressure oscillation that causes because of interrupted cutting action, can also improve the efficient of cutting; After most of vitreous body absorption is completed, when needing cutting and drawing the vitreous body of close retina part, sickle can be adjusted to A condition, by mobile member bottom cut length with insert the member lateral cavity and coordinate cutting, can not impact retina, convenient cutting need not to change other sicklies.
Description of drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is the perspective view of existing vitreous cutter.
Fig. 2 is the near-end zoomed-in view of vitreous cutter shown in Figure 1.
Fig. 3 is the insertion member of an embodiment of vitreous cutter of the present invention and the schematic diagram of mobile member.
Fig. 4 is that vitreous cutter shown in Figure 3 will insert the schematic diagram after component partial is cut open.
Fig. 5 is the schematic diagram of mobile member when the switch operating state of vitreous cutter shown in Figure 3.
Fig. 6 is the schematic diagram of vitreous cutter shown in Figure 3 under another duty.
Fig. 7 is the schematic diagram of the mobile member in vitreous cutter shown in Figure 3.
Fig. 8 is the schematic diagram of the mobile member in another embodiment of the present invention vitreous cutter.
The specific embodiment
specific embodiments of the invention 1, a kind of vitreous cutter, similar with existing vitreous cutter, comprise interface members, insertion member 1 with inner chamber, extremely shown in Figure 7 with existing sickle difference such as Fig. 3, insert member 1 sidewall at it and have two lateral cavity 5 near the position of bottom, this vitreous cutter further comprises mobile member 3, as Fig. 4 and shown in Figure 7, the perforate 2 that mobile member 3 has to cut, the two edges up and down of this perforate 2 are otch, and also has one section cut length 4 in the mobile member bottom, this cut length 4 and perforate projection in the axial direction do not overlap.As shown in Figure 5, can be by relatively rotating a certain angle to switch the duty of mobile member between mobile member 3 and insertion member 1, mobile member has two kinds of duties at least, be that A, mobile member 3 have and only have cut length 4 through inserting the lateral cavity 5 on member 1, as shown in Figure 4 when moving reciprocatingly; B, mobile member 3 perforate 2 processes when moving reciprocatingly are inserted the lateral cavity 5 on member 1, as shown in Figure 6.Mobile member 3 is arranged in inner chamber and is upper and mechanically be connected with exterior power mechanism and reciprocatingly move in operation.More particularly, this mobile member 3 moves forward and backward, under the B duty, two lateral cavity 5 inserting member 1 are crossed in perforate 2, be no matter mobile member 3 reaches or after move past in journey, the material of the lateral cavity that is placed in 5 is all one after the other cut by otch, and under the A duty, cut length 4 moves back and forth to coordinate with lateral cavity 5 completes cutting.This vitreous cutter also comprises suction inlet, and it is connected to suction source (not shown) by sucking line.In this example, cut length 4 can be one section cutting part of projection, can be also the otch of directly leaving on mobile member 3 bottoms.
In this example, a kind of optimal way under the A duty by controlling the stroke of mobile member, makes under the A duty, in motor process, has and only have the bottom cut length through inserting on member the lateral cavity of below at mobile member.Control cutting accuracy and on position that like this can be more convenient be convenient to cut the vitreous body at contiguous retina place.
Embodiments of the invention 2, a kind of vitreous cutter, its structure is similar to embodiment 1, difference is mobile member 3 wherein, as shown in Figure 8, also be provided with one section second cut length 6 in the bottom of mobile member 3, this second cut length 6 and perforate 2 projection in the axial direction overlaps, and the second cut length 6 and cut length 4 have connected and composed the bottom end opening of mobile member 3 in this example.In this example, when mobile member 3 is in the B duty, mobile member 3 when moving reciprocatingly perforate 2 and the second cut length 6 all through inserting the lateral cavity on member.When mobile member 3 with insert the relative rotation of member 1 after when entering the B duty, mobile member is in the reciprocating motion process, bottom cut length and side-wall hole coordinate cutting with two lateral cavity of insertion member, take the embodiment of this mode can improve the cutting efficiency of vitreous cutter under the B duty.
Work process below in conjunction with embodiment 2 further illustrates the present invention, when a large amount of cuttings and absorption vitreous body, with sickle as for the B duty: mobile member 3 beginnings are moved from top to bottom, the top edge otch of perforate 2 coordinates cutting downwards with the lateral cavity 5 of top, the bottom end opening of mobile member 3 coordinates cutting with the lateral cavity of below 5; When mobile member 3 continues to move downward, perforate 2 parts appear in lower hole 5, and vitreous body enters sickle via lower hole 5; Mobile member 3 continues to move down, and the top edge otch of perforate 2 appears in lower hole 5 and coordinates cutting with lower hole 5, and the top that upper hole is moved member 3 is blocked; When mobile member 3 moves to the backward upper motion in bottom, the lower limb otch by perforate 2 carries out similar cutting movement.In whole work process, mobile member 3 is constantly being done cutting movement basically, has guaranteed constantly to have that vitreous body is cut extracts, and has avoided pressure oscillation that interrupted cutting causes and in the situation that identical cutting frequency efficient improves at least 3 times; When the vitreous body at the contiguous retina of cutting place, sickle is placed in the A duty, mobile member bottom end opening 4 moves back and forth, and coordinates with below lateral cavity 5 and completes cutting.
In this example, mobile member is also by Stroke Control switch operating state, and further comprise the C duty, be the relative angle that rotates between mobile member and insertion parts to the B duty, by the Stroke Control mobile member have in motor process and only have the bottom cut length through insertion member below lateral cavity.The C duty can reach and the identical cutting effect of A duty, also can conveniently cut the vitreous body near the retina place.Reach and the identical cutting effect of A duty, also can conveniently cut the vitreous body near the retina place.
In the above-described embodiments, for the convenient insertion depth that inserts member 1 of observing, can be marked with scale marker 6 at the outer side edges subscript that inserts member.In order further to improve cutting efficiency, the lateral cavity 5 over 2 can also be set on the side that inserts member.
Disclosed all features in this description, or the step in disclosed all methods or process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this description (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or similar characteristics.
The present invention is not limited to the aforesaid specific embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (7)
1. dual-purpose vitreous body cutting head, comprise the insertion member with inner chamber and the mobile member that is arranged on the hollow that moves reciprocatingly in inner chamber, have on the side that inserts member and be no less than 2 lateral cavity, has a perforate on mobile member, the two edges up and down of this perforate are otch, it is characterized in that: there is one section cut length described mobile member bottom, this cut length and perforate projection does not in the axial direction overlap, can be by relatively rotating a certain angle to switch the duty of mobile member between mobile member and insertion member, mobile member has two kinds of duties at least, be A, mobile member has and only has the bottom cut length through inserting the lateral cavity on member when moving reciprocatingly, B, mobile member perforate process when moving reciprocatingly is inserted the lateral cavity on member.
2. dual-purpose vitreous body cutting head according to claim 1 is characterized in that: insert the member member rotation that can relatively move.
3. dual-purpose vitreous body cutting head according to claim 1 is characterized in that: mobile member can insert the member rotation relatively.
4. according to claim 2 or 3 described dual-purpose vitreous body cutting heads, is characterized in that: have 2 holes on the side of insertion member.
5. dual-purpose vitreous body cutting head according to claim 4 is characterized in that: when mobile member is in the A duty, mobile member when moving back and forth the bottom cut length only with insert member lateral cavity bottom and coordinate cutting.
6. dual-purpose vitreous body cutting head according to claim 4, it is characterized in that: also be provided with one section second cut length in the mobile member bottom, this second cut length and perforate projection in the axial direction overlaps, when mobile member is in the B duty, mobile member when moving reciprocatingly perforate and the second cut length all through inserting the lateral cavity on member.
7. dual-purpose vitreous body cutting head according to claim 4 is characterized in that: under the A duty, in motor process, have and only have the bottom cut length through inserting on member the lateral cavity of below at mobile member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110237605 CN102327159B (en) | 2011-08-18 | 2011-08-18 | Dual-purpose vitreous body cutting head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110237605 CN102327159B (en) | 2011-08-18 | 2011-08-18 | Dual-purpose vitreous body cutting head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102327159A CN102327159A (en) | 2012-01-25 |
| CN102327159B true CN102327159B (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110237605 Expired - Fee Related CN102327159B (en) | 2011-08-18 | 2011-08-18 | Dual-purpose vitreous body cutting head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102327159B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9486360B2 (en) * | 2013-12-05 | 2016-11-08 | Novartis Ag | Dual electromagnetic coil vitrectomy probe |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4620547A (en) * | 1983-12-31 | 1986-11-04 | Richard Wolf Gmbh | Instrument for sampling tissue specimens |
| US4811734A (en) * | 1987-08-13 | 1989-03-14 | Baxter Travenol Laboratories, Inc. | Surgical cutting instrument |
| US5106364A (en) * | 1989-07-07 | 1992-04-21 | Kabushiki Kaisha Topcon | Surgical cutter |
| US5505210A (en) * | 1989-11-06 | 1996-04-09 | Mectra Labs, Inc. | Lavage with tissue cutting cannula |
| US5630827A (en) * | 1995-06-19 | 1997-05-20 | Dutch Ophthalmic Research Center International Bv | Vitreous removing apparatus |
| CN1431889A (en) * | 2000-03-11 | 2003-07-23 | 约翰霍普金斯大学 | Sutureless ocular surgical methods and instruments used in same |
| CN101378703A (en) * | 2006-02-06 | 2009-03-04 | 爱尔康公司 | Microsurgical instrument |
| CN101584623A (en) * | 2009-06-26 | 2009-11-25 | 杨勋 | Vitreous hummor cutter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5257988A (en) * | 1991-07-19 | 1993-11-02 | L'esperance Medical Technologies, Inc. | Apparatus for phacoemulsifying cataractous-lens tissue within a protected environment |
-
2011
- 2011-08-18 CN CN 201110237605 patent/CN102327159B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4620547A (en) * | 1983-12-31 | 1986-11-04 | Richard Wolf Gmbh | Instrument for sampling tissue specimens |
| US4811734A (en) * | 1987-08-13 | 1989-03-14 | Baxter Travenol Laboratories, Inc. | Surgical cutting instrument |
| US5106364A (en) * | 1989-07-07 | 1992-04-21 | Kabushiki Kaisha Topcon | Surgical cutter |
| US5505210A (en) * | 1989-11-06 | 1996-04-09 | Mectra Labs, Inc. | Lavage with tissue cutting cannula |
| US5630827A (en) * | 1995-06-19 | 1997-05-20 | Dutch Ophthalmic Research Center International Bv | Vitreous removing apparatus |
| CN1431889A (en) * | 2000-03-11 | 2003-07-23 | 约翰霍普金斯大学 | Sutureless ocular surgical methods and instruments used in same |
| CN101378703A (en) * | 2006-02-06 | 2009-03-04 | 爱尔康公司 | Microsurgical instrument |
| CN101584623A (en) * | 2009-06-26 | 2009-11-25 | 杨勋 | Vitreous hummor cutter |
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|---|---|
| CN102327159A (en) | 2012-01-25 |
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| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20130515 Termination date: 20210818 |