CN102327159A - Dual-purpose vitreous body cutting head - Google Patents

Abstract

Translated fromChinese

本发明公开了一种两用玻璃体切割头，包括具有内腔的插入构件和安装在内腔中做往复运动的中空的移动构件，在插入构件的侧边上具有不少于2个侧边孔洞，移动构件底端开口且移动构件侧壁上具有一个开孔，该开孔的上下两边缘为切口，其特征在于：所述移动构件底端开口为切割段，该切割段和侧壁开孔在轴向上的投影不重合，移动构件和插入构件之间能够通过相对旋转切换玻璃体切割器的工作状态，玻璃体切割器至少有两种工作状态，即A、移动构件在做往复运动时切割段经过插入构件上的侧边孔洞；B、移动构件在做往复运动时侧壁开孔均经过插入构件上的侧边孔洞。本发明的玻璃体切割器在切割时波动小，切割效率高，并且还可以方便切割靠近视网膜处的玻璃体。

The invention discloses a dual-purpose vitreous body cutting head, which includes an inserting member with an inner cavity and a hollow moving member installed in the inner cavity for reciprocating movement, and has no less than two side holes on the side of the inserting member , the bottom end of the moving member is open and there is an opening on the side wall of the moving member. The projections in the axial direction do not overlap, and the working state of the vitreous cutter can be switched by relative rotation between the moving member and the inserting member. The vitreous cutter has at least two working states, namely A. When the moving member is reciprocating, it cuts the segment Pass through the side hole on the insertion component; B. When the moving component reciprocates, the side wall openings all pass through the side hole on the insertion component. The vitreous body cutter of the present invention has small fluctuations during cutting, high cutting efficiency, and can conveniently cut the vitreous near the retina.

Description

Dual-purpose vitrectomy head

Technical field

The present invention relates to medical apparatus and instruments, especially a kind ofly be used to cut the Vitrea dual-purpose vitrectomy head of ophthalmic.

Background technology

Vitreous cutter is to be used for the device that the vitreous body in the eyes cut and draws at operation process; Among existing glass body sickle such as the Chinese invention patent application CN1431889A or described in the Chinese utility model patent CN2440479; As depicted in figs. 1 and 2, generally includeinterface members 302, have theinsertion member 304 ofinner chamber 314 and near thelateral cavity 308 of its end points.This cutting andsuction device 300 further comprisemobile member 310 its have be used for cuttingcut end 312, thismobile member 310 is arranged in theinner chamber 314 and goes up and mechanically be to be connected withinterface members 302 in operation.Thismobile 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 cutsend 312 and can move the back, crosses thelateral cavity 308 nearend points 306 of insertingmember 304, so place the material of lateral cavity one after the other to hold 312 cuttings by cutting.Thisinterface members 302 comprisessuction inlet 320, and it is connected to suction source (not shown) by sucking line 322.Thissuction inlet 320 can carry out liquid with 314 of inner chambers and exchange, so the material of near liquidmobile member 310 and cutting-out is discharged via the inner chamber sucking-off and by suction inlet.Thismobile member 310 moves bysickle front end 330 circularly, so the vitreous body material that scales off can be continuously frominner chamber 314 sucking-offs, and can not stop up.

Can find out that in above-mentioned vitreous cuttermobile member 310 mobile is cut into the continuous absorption that impulse movement is unfavorable forsuction inlet 320.

A kind of improvement project is proposed in Chinese invention patent 200910303698.3 for this reason; On the insertion member, be provided with two or more holes; And on the mobile member of hollow, be provided with a hole, the distance between two adjacent holes is less than distance following on the hole, when mobile member is inserting when moving back and forth in the member; The following edge mate with hole that goes up in hole is accomplished 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 alternate cutting action, but owing on the insertion member, the hole more than 2 is arranged, and the hole is between hole, to move back and forth; Cause this kind sickle when the amphiblestroid vitreous body of cutting vicinity, to use and inconvenience, often need change other vitreous cutter cooperatings.

Summary of the invention

The objective of the invention is:, one simple in structure, safe in utilization, vitreous cutter easily is provided to the deficiency of prior art.

A kind of dual-purpose vitrectomy head; Comprise insertion member with inner chamber and the mobile member that is installed in the hollow that moves reciprocatingly in the inner chamber; On the side that inserts member, have and be no less than 2 lateral cavity; On mobile member, have a perforate, the two edges up and down of this perforate are otch, it is characterized in that: there is one section cut length said mobile member bottom; This cut length and perforate projection does not in the axial direction overlap; Can switch the duty of mobile member through rotating a certain angle relatively between mobile member and the insertion member, mobile member has two kinds of duties at least, and promptly A, mobile member have and only have the bottom cut length through inserting the lateral cavity on the member when moving reciprocatingly; B, mobile member perforate process when moving reciprocatingly is inserted the lateral cavity on the member.

Supplementary technology scheme of the present invention is following:

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 the member.

Preferably, when mobile member was in the A duty, the bottom end opening cut length only cooperated 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 second cut length all through the lateral cavity on the insertion member.When mobile member and insertion member rotated back entering B duty relatively, mobile member was in the reciprocating motion process, and bottom end opening cut length and side-wall hole cooperate cutting with two lateral cavity inserting 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 has only the bottom cut length through inserting on the member the lateral cavity of below at mobile member.

Preferably; Mobile member is also through Stroke Control switch operating state; And further comprise the C duty: rotate to the relative angle under the B duty between mobile member and the insertion parts, in motor process, have and have only the bottom cut length through lateral cavity below the insertion member through the Stroke Control mobile member.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 vitreous body near the retina place.

The invention has the beneficial effects as follows: under the B duty; Perforate on the mobile member has to be no less than between 2 holes on the side that inserts member moves; In the process of moving back and forth, all can form cutting action, keep the seriality of cutting, be convenient to suction device and draw; Reduce the pressure oscillation that causes because of alternate cutting action, can also improve the efficient of cutting; After most of vitreous body is drawn completion; When needs cut and draw near the vitreous body of retina part; Can sickle be adjusted to A condition, cooperate cutting with insertion member lateral cavity, can not impact retina by mobile member bottom end opening cut length; Convenient cutting need not to change other sicklies.

Description of drawings

The present invention will explain through example and with reference to the mode of accompanying drawing, wherein:

Fig. 1 is the perspective view of existing glass body sickle.

Fig. 2 is the near-end zoomed-in view of vitreous cutter shown in Figure 1.

Fig. 3 is insertion member and the sketch map of mobile member of an embodiment of vitreous cutter of the present invention.

Fig. 4 is that vitreous cutter shown in Figure 3 will insert the sketch map after component partial is cut open.

Fig. 5 is the sketch map of mobile member when the switch operating state of vitreous cutter shown in Figure 3.

Fig. 6 is the sketch map of vitreous cutter shown in Figure 3 under another duty.

Fig. 7 is the sketch map of the mobile member in the vitreous cutter shown in Figure 3.

Fig. 8 is the sketch map of the mobile member in another embodiment of the present invention vitreous cutter.

The specific embodiment

Specific embodiment 1 of the present invention, a kind of vitreous cutter, similar with existing glass body sickle; Comprise interface members, have theinsertion member 1 of inner chamber, with existing sickle difference such as Fig. 3 to shown in Figure 7, insertmember 1 sidewall at it and have twolateral cavity 5 near the position of bottom; This vitreous cutter further comprisesmobile member 3; Like Fig. 4 and shown in Figure 7,mobile member 3 has theperforate 2 that is used for cutting, and the two edges up and down of thisperforate 2 are otch; And also have one section cutlength 4 in the mobile member bottom, thiscut length 4 does not overlap with perforate projection in the axial direction.As shown in Figure 5; Can switch the duty of mobile member through rotating a certain angle relatively betweenmobile member 3 and theinsertion member 1; Mobile member has two kinds of duties at least; Be that A,mobile member 3 have and only have cutlength 4 through inserting thelateral cavity 5 on themember 1 when moving reciprocatingly, as shown in Figure 4; B,mobile member 3 perforate 2 processes when moving reciprocatingly are inserted thelateral cavity 5 on themember 1, and are as shown in Figure 6.Mobile member 3 is arranged in the inner chamber and in operating to go up and mechanically be connected with exterior power mechanism and reciprocatingly moves.More particularly; Thismobile member 3 moves forward and backward, and under the B duty, twolateral cavity 5 insertingmember 1 are crossed in perforate 2; No matter bemobile member 3 reaches or after move past in the journey; The material of the lateral cavity thatplaces 5 is all one after the other cut by otch, and under the A duty, cutlength 4 reciprocating motions cooperate withlateral cavity 5 accomplishes cutting.This vitreous cutter also comprises suction inlet, and it is connected to suction source (not shown) by sucking line.In this example, cutlength 4 can be one section protruding cutting part, also can be the otch of directly onmobile member 3 bottoms, leaving.

In this example, a kind of optimal way under the A duty, the stroke through the control mobile member makes under the A duty, in motor process, has and have only the bottom cut length through inserting on the member the lateral cavity of below at mobile member.Cutting Control precision and on position that like this can be more convenient be convenient to cut the vitreous body at contiguous retina place.

Embodiments of theinvention 2; A kind of vitreous cutter, its structure is similar withembodiment 1, and difference ismobile member 3 wherein; As shown in Figure 8; Also be provided with one sectionsecond cut length 6 in the bottom ofmobile member 3, thissecond cut length 6 overlaps with perforate 2 projection in the axial direction, andsecond cut length 6 and cutlength 4 have connected and composed the bottom end opening ofmobile member 3 in this example.In this example, whenmobile member 3 is in the B duty,mobile member 3 when moving reciprocatingly perforate 2 andsecond cut length 6 all through inserting the lateral cavity on the member.When aftermobile member 3 andinsertion member 1 rotate relatively, getting into the B duty; Mobile member is in the reciprocating motion process; Bottom end opening cut length and side-wall hole cooperate cutting with two lateral cavity inserting member, take the embodiment of this mode can improve the cutting efficiency of vitreous cutter under the B duty.

Work process below in conjunction withembodiment 2 further specifies 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 cooperates cutting downwards with thelateral cavity 5 of top, the bottom end opening ofmobile member 3 cooperates cutting with the lateral cavity of below 5; Whenmobile member 3 continues to move downward, perforate 2 parts appear at down in thehole 5, and vitreous body gets into sicklies viahole 5 down;Mobile member 3 continues to move down, and the top edge otch ofperforate 2 appears at down in thehole 5 and cooperates cutting with followinghole 5, and the top that last hole is movedmember 3 is blocked; Aftermobile member 3 moves to the bottom, move upward, then the lower limb otch by perforate 2 carries out similar cutting movement.In entire work process,mobile member 3 is constantly being done cutting movement basically, and having guaranteed constantly has vitreous body to be cut extraction, avoided pressure oscillation that interrupted cutting causes and under the situation of identical cutting frequency efficient improve at least 3 times; When the vitreous body at the contiguous retina of cutting place, sickle is placed the A duty, mobile member bottom end opening 4 moves back and forth, and cooperates with belowlateral cavity 5 to accomplish cutting.

In this example; Mobile member is also through Stroke Control switch operating state; And further comprise the C duty; Be the relative angle that rotates between mobile member and the insertion parts under the B duty, in motor process, have and have only the bottom cut length through lateral cavity below the insertion member through the Stroke Control mobile member.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 vitreous body near the retina place.

In the above-described embodiments, observe the insertion depth that insertsmember 1 for ease, can be marked withscale marker 6 at the outer side edges subscript that inserts member.In order further to improve cutting efficiency, thelateral cavity 5 above 2 can also be set on the side that inserts member.

Disclosed all characteristics in this description, or the step in disclosed all methods or the process except mutually exclusive characteristic and/or the step, all can make up by any way.

Disclosed arbitrary characteristic in this description (comprising any accessory claim, summary and accompanying drawing) is only if special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, only if special narration, each characteristic is an example in a series of equivalences or the 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 (9)

1. dual-purpose vitrectomy head; Comprise insertion member with inner chamber and the mobile member that is installed in the hollow that moves reciprocatingly in the inner chamber; On the side that inserts member, have and be no less than 2 lateral cavity; On mobile member, have a perforate, the two edges up and down of this perforate are otch, it is characterized in that: there is one section cut length said mobile member bottom; This cut length and perforate projection does not in the axial direction overlap; Can switch the duty of mobile member through rotating a certain angle relatively between mobile member and the insertion member, mobile member has two kinds of duties at least, and promptly A, mobile member have and only have the bottom cut length through inserting the lateral cavity on the member when moving reciprocatingly; B, mobile member perforate process when moving reciprocatingly is inserted the lateral cavity on the member.

2. dual-purpose vitrectomy head according to claim 1 is characterized in that: insert the member member rotation that can relatively move.

3. dual-purpose vitrectomy 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 vitrectomy heads, it is characterized in that: have 2 holes on the side of insertion member.

5. according to claim 2 or 3 described dual-purpose vitrectomy heads, it is characterized in that: on the insertion member, scale marker is arranged.

6. dual-purpose vitrectomy head according to claim 4 is characterized in that: when mobile member was in the A duty, mobile member bottom end opening cut length when moving back and forth only cooperated cutting with insertion member lateral cavity bottom.

7. dual-purpose vitrectomy 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 second cut length all through inserting the lateral cavity on the member.

8. dual-purpose vitrectomy head according to claim 4 is characterized in that: under the A duty, in motor process, have and have only the bottom cut length through inserting on the member the lateral cavity of below at mobile member.

9. dual-purpose vitrectomy head according to claim 4; It is characterized in that: mobile member is also through Stroke Control switch operating state; And further comprise the C duty: rotate to the relative angle under the B duty between mobile member and the insertion parts, in motor process, have and have only the bottom cut length through lateral cavity below the insertion member through the Stroke Control mobile member.

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