CN101669852A

CN101669852A - Automatic vesicle gashing device

Info

Publication number: CN101669852A
Application number: CN200910160175A
Authority: CN
Inventors: 王伟; 李娜
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-23
Filing date: 2009-07-23
Publication date: 2010-03-17

Abstract

The invention relates to an apparatus for automatically gashing crystalline lens anterior capsule membrane into a circle with a diameter as required during the implementation of cataract operation. The apparatus comprises a power control box capable of being connected with a soft shaft, a handle, and a vesicle gashing cutter made of memory metal. The inner part of the handle comprises the soft shaft, an internal core, and a transmission rod with a clamping device. The vesicle gashing cutter is straight when pulled back to the tube, and restored to be circular based on memory shape when pushedout of the tube; and the anterior capsule membrane is cut or sheared by the cutter head along the arc line so as to form smoothly circular shape with corresponding diameter. The vesicle gashing cutteris simply structured and convenient to be operated, can get into the atria easily and automatically, thereby improving the success ratio of operation and reducing the operation difficulty.

Description

Automatic vesicle gashing device

Technical field

When the present invention is the ophthalmology cataract operation, automatically anterior lens capsule film cutting-up is sheared out the apparatus of the circle of a required diameter.

Technical background

Existing technology is that a capsule draws circle before tearing or cut with Tweezers for eye surgery or the manual control of discission needle head, does not have superb technology often to fail.Also have some inventions can not draw the circle of a smooth edge, cause operative failure.Perhaps tear the capsule apparatus and pass in and out the anterior chamber not easily.

Summary of the invention

The present invention has overcome deficiency of the prior art, just can stretch into and tear capsule device head by cutting very little mouth on the present modus operandi cornea, draw the capsule cutter obtains an entire required diameter by stroke capsule cutter recovery original form pro-capsule circle but from pipe, release automatically, the cystotome of pulling back can be return in the pipe by former road, is easy to withdraw from the anterior chamber.

Adopt following technical proposals for solving the problem the present invention who exists: special have the Memorability elastic metallic to make cystotome (8), and cutter head can be made into multiple shape (Fig. 6), and front curvature becomes the different-diameter circle, stressed variable straight, removes external force and can recover circular.Handle front portion (7) is replaceable, can select the application that adapts with stroke capsule cutter cross section.Push rod (3) is arranged in the handle, and the push rod cross section is square, and there is clamping device (6) the push rod front portion, but knife bar is put into back fastening nut clamping knife bar, there is screw thread at the push rod rear portion, and the female roll tube (2) that adapts with it rotates roll tube and can release or retract push rod.The roll tube afterbody is driven by the flexible axle that inner core is arranged (10).The flexible axle inner core can just, reversed and rotating speed by the control of dynamic Control case.Perhaps directly manually.

Advantage of the present invention is:

The requirement of surgical technic level is greatly lowered in 1 operation automatically.

2 pro-capsules are easy to make the entire circle of required diameter.

Cut a very little mouth stroke capsule cutter on 3 corneas and just can pass in and out the anterior chamber easily.

Description of drawings

Accompanying drawing is an axonometric chart of the present invention, and profile.

Fig. 1 is a control chamber, flexible axle, handle, full-view stereo figure.

Fig. 2 is for drawing the handle axonometric chart of capsule cutter in drawing in pipe the time.

Fig. 3 is for drawing the handle axonometric chart of capsule cutter outside releasing pipe the time.

Fig. 4 is for drawing the handle profile figure of capsule cutter in drawing in pipe the time.

Fig. 5 is for drawing the handle profile figure of capsule cutter outside releasing pipe the time.

Fig. 6 is stroke capsule cutter of various difformity cutter heads.

(1) terminal shell (11) flexible axle inner core (12) the dynamic Control case control of capsule cutter (9) hold-down nut (10) flexible axle and foot-operated is drawn in shell (2) band female thread roll tube (3) push rod (4) roll tube retaining head (5) hold-down nut (6) clamping device (7) handle front portion (8)

The specific embodiment

To draw the capsule cutter and fix, handle installs, draw a capsule cutter fall back in only surplus cutter head outer at pipe as (Fig. 2 outward appearance, Fig. 4 cross section).Do corneal incision, enter from otch and to choose the position, cutter head thrusts cyst membrane, control chamber or hands rotate the driving snake inner core, are transferred in the handle, and push rod promotes to draw the capsule cutter and goes out outside the pipe, draw the capsule cutter and recover original form (Fig. 3 outward appearance, Fig. 5 cross section), cyst membrane is drawn or sheared to cutter head by the camber line of circle, becomes an entire circle.Backward rotation, push rod retract draws the capsule cutter, draws capsule cutter head portion and is deformed in the straight-bar return pipe.Withdraw from corneal incision, can undergo surgery next step.

Claims

1. an automatic vesicle gashing device includes dynamic Control case, the handle that can connect flexible axle and has stroke capsule knife tackle one-tenth that the Memorability metal constitutes.Handle inside is by flexible axle, inner core and have the drive link of clamping device to constitute.Draw the capsule cutter and can release and retract, draw the capsule cutter during release, draw the capsule cutter when retracting and to return in the handle by the reminiscence original shape.

2. eye speculum according to claim 1 is characterized in that, the front end natural torsion circlewise when drawing the capsule cutter and constituting normal no external force by the metal with Memorability, diameter can be made 5mm according to the diameter that will cut capsule, 5.5mm, 6.5mm, 7.5mm, 8.5mm etc., be straight when retracting in the pipe when being subjected to external force, front end can recover by Memorability because of the constraint of disengaging pipe when releasing pipe, cutter head can cut along camber line, or shears cyst membrane.Form the circle of respective diameters.Draw the capsule cutter and also can go out Yuan Lu and return in the pipe, withdraw from the anterior chamber.Draw the capsule cutter can make multiple thick inadequate different, but multiple shapes such as cross section square circle, square has more advantage.Cutter head can be made multiple shape.

3. it is characterized in that according to claim 1 is described the handle first half is connected with main body by nut.Select the different capsule cuttves of drawing just to select the first half of adaptation with it.

4. it is characterized in that having the clamping device clamping to draw the capsule cutter before the drive link according to claim 1 is described, there is screw thread at the drive link rear portion, and the cross section is square.

5. it is characterized in that according to claim 1 is described, but rotate female inner core push-and-pull drive link.

6. it is characterized in that according to claim 1 is described inner core is driven by driving snake.

7. it is characterized in that according to claim 1 is described, can connect the dynamic Control case of flexible axle, can just change, counter-rotating, stall, control rate.By foot-operated control.