CN2501479Y

CN2501479Y - Cataract thread nuclear cutter

Info

Publication number: CN2501479Y
Application number: CN 01261735
Authority: CN
Inventors: 李钟实; 张海玲; 刘叶兰
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-09-20
Filing date: 2001-09-20
Publication date: 2002-07-24
Anticipated expiration: 2011-09-20

Abstract

The utility model discloses a cataract line core cutting device, comprising a core cutting line 1, an inner core bar 6, a sleeve 8, a pinhead pipe 7, the inner core bar 6 is arranged in the sleeve 8, the front end thereof is provided with a segment of the tubule 2 structure, the terminal of the tubule 2 is provided with a hole 3, the inner core bar 6 is sleeved with the pinhead pipe 7, the pinhead pipe 7 is sleeved on the front part of the sleeve 8, the core cutting line 1 is folded to two strands which are arranged by going through the tubule 2, the hole 3, and the pinhead pipe 7, and the two strands are tightly pressed at the front part of the sleeve 8 by the pinhead pipe 7. The cataract line core cutting device with the structure can be used to cut crystal core, which is little in operation incision, low in instrument damage.

Description

A kind of cataract thread nuclear cutter

This utility model relates to a kind of ophthalmic medical apparatus and instruments, in particular, is a kind of cataract thread nuclear cutter, is applicable to that the crystal nuclear of non-ultrasonic emulsification small incision cataract enucleation is morcelled.

At present, the cataract disease adopts the little otch fragmentation nucleus of scleral tunnel to extract the associating intraocular lens implants mostly and treats, this kind Therapeutic Method must be pulverized crystal nuclear earlier, crystal nuclear could take out after being broken into fritter, the apparatus that fragmentation nucleus adopts is the crystal backing plate and cuts nuclear cutter, fragmentation nucleus pincers etc., the crystal backing plate with cut nuclear cutter to be used, apparatus is steel material, volume is bigger, and is during operation technique, careless slightly, cause the damage of tissues such as posterior lens capsule film easily, and operative incision is bigger, and postoperative wound is difficult for closed.

The purpose of this utility model is to provide the cataract thread nuclear cutter that a kind of operative incision is little, the apparatus damage is little.

This utility model is achieved in that a kind of cataract thread nuclear cutter, this cataract thread nuclear cutter by cut nuclear line, internal core rod, sleeve pipe, syringe needle tube constitutes, internal core rod is contained in the sleeve pipe, its front end has one section tubule structure, the tubule end is offered the hole, and the syringe needle pipe box is crossed internal core rod and is enclosed within the sleeve pipe front portion, cuts nuclear line folding for bifilar, pass tubule, hole, syringe needle tube placement, and be pressed on the sleeve pipe front portion by syringe needle tube.

The utility model has the advantages that: cut that nuclear wire rod matter is soft, volume is little, application is cut the nuclear line as the fragmentation nucleus instrument, can significantly reduce the otch size, alleviate damage to tissues such as posterior lens capsule films, cut the nuclear line and enter the otch that camera oculi anterior needs not enough 1mm, more easily make otch airtight, and existing apparatus needs 4-5mm or bigger otch, otch is difficult for airtight.

Below in conjunction with accompanying drawing this utility model is described in further detail.

Fig. 1 is this utility model schematic perspective view.

Fig. 2 is the cross-sectional schematic of this utility model front portion structure.

As seen from the figure, inner core tube 6 is contained in the sleeve pipe 8, its back segment is thick, and leading portion is thin, is hollow tubule 2 at the leading portion of inner core tube 6, tubule 2 ends have hole 3, inner core tube 6 back segments can adopt medical plastic, and the thin part of leading portion can adopt steel material, and two parts can be processed respectively, then the leading portion steel is partially submerged in the back segment parts of plastics, both is bonded as one with the heat seal mode.Tubule 2 parts have certain radian, be beneficial to enter the ophthalmic operation, hole 3 trailing edges are long inclined plane shape, being convenient to cut nuclear line 1 passes, its position installs the place ahead slightly of back syringe needle tube 7 at apparatus, syringe needle tube 7 is enclosed within sleeve pipe 8 front ends, cut nuclear line 1 folding for bifilar, pass tubule 2, hole 3, syringe needle tube 7 is placed, and syringe needle tube 7 can adopt the medium-soft medical plastic, the material high resilience, can tightly restraint in the surface of sleeve pipe 8 front ends cutting nuclear line 1, the hole is offered in appropriate location, sleeve pipe 8 both sides, and respective grooves 5 is offered in internal core rod 6 appropriate locations, guide post 9 is designed to the protruding tack of an end, and an end is threaded.

During assembling, earlier spring 4 is enclosed within the leading portion of internal core rod 6, and together insert in the sleeve pipe 8, spring 4 withstands on sleeve pipe 8 inwalls, and internal core rod 6 front ends then stretch out sleeve pipe 8, guide post 9 is put into from sleeve pipe 8 one side openings, pass the groove 5 on the internal core rod 6, pass and fixing, again syringe needle tube 7 is placed in internal core rod 6 front portions with nut 10 from another side opening of sleeve pipe 8, cut nuclear line 1 folding for bifilar, two the end of a thread insert in the tubule 2, draw by hole 3, pass syringe needle tube 7, be placed on sleeve pipe 8 front end outsides, nuclear line 1 is cut in adjustment makes coil to desirable size, and syringe needle tube 7 by tightly at sleeve pipe 8 front ends, is cut nuclear line 1 and is fixed between the two, this apparatus is cut nuclear line 1 and can arbitrarily be adjusted and change.

During use, will cut the center that nuclear line 1 is enclosed within the crystal nuclear surface, promote internal core rod 6 forward with a special syringe needle, cutting nuclear line 1 coil then reduces gradually, after cutting nuclear line 1 entering tubule 2 fully, crystal nuclear then is cut to two halves fully, unclamps internal core rod 6, under the effect of spring 4 elastic force, cut nuclear line 1 and return to original position, so, more examine piece and separate, flexible, reliable easily row.

Claims

1. cataract thread nuclear cutter, it is characterized in that: this cataract thread nuclear cutter is by cutting nuclear line (1), internal core rod (6), sleeve pipe (8), syringe needle tube (7) formation, internal core rod (6) is contained in the sleeve pipe (8), its front end has one section tubule (2) structure, tubule (2) end is offered hole (3), syringe needle tube (2) overlapped internal core rod (6) and was enclosed within sleeve pipe (8) front portion, cut nuclear line (1) folding for bifilar, pass tubule (2), hole (3), syringe needle tube (7) placement, and be pressed on sleeve pipe (8) front portion by syringe needle tube (7).

2. cataract thread nuclear cutter according to claim 1, it is characterized in that: the hole is offered in described sleeve pipe (8) appropriate location, both sides, offer respective grooves (5) on the internal core rod (6), locating rod (9) passes the hole and the groove (5) of sleeve pipe (8) both sides and places, described internal core rod (6) is with spring (4), and an end of spring (4) withstands on the inwall of sleeve pipe (8) front end.