CN1579351A

CN1579351A - Automatic-controlled laser operation machine for glaucoma filtration operation

Info

Publication number: CN1579351A
Application number: CNA031531105A
Authority: CN
Inventors: 李迎新; 贺忠江; 杨久敏; 禹国强
Original assignee: Tianjin Medical University
Current assignee: Tianjin Medical University
Priority date: 2003-08-07
Filing date: 2003-08-07
Publication date: 2005-02-16

Abstract

The invention is glaucoma filter automatic controlled laser operator for curing glaucoma. The system is made up of software and hardware; the hardware is made up of laser, guiding light laser, image picking device, mechanism frame and computer, the guiding laser is assembled in the box of primary laser, the laser knife of the primary laser is connected with the image picking device through mechanical frame, and it is connected to the computer through interface card or interface circuit; the work of each hardware is connected by software. It uses image picking device to acquire the image information of the focus part, and monitors the operation process in real-time; the system combines the active control and the feedback control, monitors the operation process in real-time and shuts off the laser automatically after the operation has been completed, it can acquires the best working parameter, and reduces the damage to the lowest effectively.

Description

Glaucoma filtering surgery automatic control laser operation machine

Technical field

The present invention relates to medical apparatus and instruments, ophthalmology laser surgery apparatus particularly, but be a kind of glaucoma automatic control laser operation device real time monitoring operation process glaucoma filtration surgery, that have multiple control modes, that parameter is adjustable that carries out.

Background technology

Operation is the glaucomatous main means of treatment, and wherein filtering surgery is the research focus during glaucoma treatment is learned always.At present, traditional filtering surgery mainly contains trabeculectomy, sclera is stung and cut art.But traditional filtering surgery post-operative complication is more, as early stage postoperative shallow of anterior chamber and do not have anterior chamber, eyelash pulse disappeared suddenly, ciliary block glaucoma, hemorrhage and filter bubble and do not form etc.; The filtration mouth obstruction in late period, cicatrization, capsule sample become, filter follicular rupture, cataract and infection etc.The remarkable advantage of laser glaucoma filtering operation is that simple and direct, safety, amount for surgical are controlled easily, surgical wound surface is little, to the damage of surrounding tissue less, not hemorrhage in the operation, some complication that can avoid or reduce traditional operation to cause, if simultaneously operation art formula is improved, laser glaucoma filtering operation can become comparatively ideal filtering operation.But also there are some filtering surgery common complication in the past in existing laser glaucoma filtering operation.As: the local point-like muddiness of road laser sclerectomy post-operative cornea, hyphema or subconjunctival hemorrhage in the non-intrusion type; And road laser sclerectomy is had relatively high expectations to operation technique in the intrusive mood, and road possibility of infection in existing; The laser trabeculoplasty excision may cause complication such as thousand adhesions of iris periphery, lens damage, otch obturation, film formation under the bigger situation of LASER HEAT damage, these complication might cause operative failure.Therefore, it is to be solved to also have many problems to have.

Summary of the invention

In order to overcome the problem that exists in the present laser glaucoma filtering operation, various laser glaucoma filtering operations are being studied on the basis of comparison, use for reference the method for traditional trabeculectomy, a kind of new method of glaucoma laser ablation art is proposed--from outside laser sclerectomy associating iridectomy, and developed Intelligent Laser surgical engine with ACTIVE CONTROL and feedback control function, can satisfy the requirement of filterability laser surgery, make damage reduce to minimum.

In the laser ablation art, should accurately control amount for surgical and minimizing damage according to different preferred laser parameter of laser surgery mode and laser controlling modes to the hole surrounding tissue.The intelligent degree of present domestic ophthalmology laser device is lower, the Artificial Control that adopt more, external ophthalmology laser device complex structure, price height, and do not possess feedback control function, the new laser filtering operation that we propose--laser sclerectomy associating iridectomy is higher to the requirement of amount for surgical control, but the present invention is a kind of glaucoma automatic control laser operation instrument multiple control modes real time monitoring operation process, that parameter is adjustable that has.

Its characteristics are as follows:

1. the multiple way of output be can select, continuous wave, pulse, multiple-pulse, composite pulse etc. comprised.Power, the irradiation time of continuous wave output, parameters such as impulse wave output energy, pulsewidth and frequency all can be preestablished and change at any time on demand by microcomputer.

2. CW Laser time or pulse laser pulse sum both can also can be by the microcomputer automatic feedback control by Artificial Control, and can be after operation finishes display result immediately.

3. the adjusting knob of being made by software each parameter of regulating laser instrument by interface circuit is compared with analog regulation, have easy to adjust, directly perceived, adjustment amount is accurate, advantage such as reliable.

4. use camera head real time monitoring operation process, one can in time detect and filters the hole and cut and wear, and the feedback control laser shutdown prevents the injury of crossing of laser effectively; Two can the real time record operation process, is convenient to patient data is managed.The medical record management Database Systems not only can also can be searched for doctor and patient at any time with on record with the image document record of postoperative before the art.

5. according to the characteristics of laser ablation filtering operation, penetrate back laser continuation to the particularly injury of deep tissue on every side, adopt two kinds of control modes for avoiding filtering the hole.The one, ACTIVE CONTROL mode, the 2nd, feedback controling mode.The former is by to desiring the analysis of resection organization's characteristic, through experiment repeatedly in a large number, sums up best control parameter, by predefined program, realizes control automatically.A kind of mode in back adopts camera head to detect in real time and cuts brightness of position, hole and change in color.Experiment discovery hole is cut and is worn normal sudden change with light intensity and color, detects this sudden change and feedback control laser shutdown in time, can prevent the injury of crossing of laser effectively.

6. because general red laser do guide light with visible light wave range, and need exploration hole to cut light intensity or change in color when wearing in the feedback control, for avoiding the red interference of light of guiding to detecting, adopted two kinds of methods: the one, select for use the laser except that redness to make to guide light, the 2nd, close guide light automatically with microcomputer control in good time.

The invention has the beneficial effects as follows simple in structure, intelligent degree height, easy to operate, can accurately control amount for surgical and reduce damage the hole surrounding tissue.The surgical effect ideal.

Description of drawings:

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is a structure principle chart of the present invention.

Fig. 2 is the position view of camera head, laser probe and lighting source

The specific embodiment

Glaucoma filtering surgery automatic control laser operation device is mainly guided the interface circuit (5) of light laser (2), area array CCD camera head (3), image pick-up card (4), laser instrument and microcomputer by CO2 main laser (1), quasiconductor, several parts such as PC (6) and software system (7) are formed.

In the embodiment shown in fig. 1, utilize high-speed i/o interface circuit (5), PC (6) and laser instrument (1) are coupled together, use D/A to convert parameter and the function of controlling laser switch are set, the A/D conversion can be monitored the state of foot switch in real time, with total number of writing laser (1) actual pulse or total contribution time.

Image pick-up card (4) is input with the video signal of CCD camera head (3) directly, need not Signal Pretreatment; Analogue signal after A/D conversion directly through pci bus and microcomputer communication.

Software system (7) control CCD camera head (3) obtains required perioperative eyes image, and image document is stored, changes, analyzed.

Under following five kinds of situations, turn-off laser instrument:

(1) foot switch---doctor's control;

(2) emergency button---Artificial Control;

(3) computer soft key " operation finishes "---computer operator;

(4) threshold value control---feedback control;

(5) reach maximum number of pulses---ACTIVE CONTROL.

The major function that system finishes has: CCD adjusting, Flame Image Process, laser parameter adjusting, laser controlling and medical record data library management.

Figure 2 shows that the secured adjusted device of CCD camera head, laser probe and light source.The first half I is the relative position front view of CCD camera head, laser probe and lighting source, and the latter half II is a vertical view.Installation can make CCD camera head, laser probe not disturb and obtain good illumination mutually like this.

Claims

1. an automatic control laser operation device that is used for glaucoma filtering surgery is made up of main laser, guide light laser, camera head, machinery frame and computer.It is characterized in that adopting camera head, detect operative site light intensity or change in color in real time, by Computer Processing, the feedback control laser shutdown is accurately controlled amount for surgical.

2. according to right 1 described glaucoma filtering surgery automatic control laser operation device, it is characterized in that adopting camera head, real time monitoring and record operation process.

3. according to right 1 described glaucoma filtering surgery automatic control laser operation device, it is characterized in that the mode with program ACTIVE CONTROL and feedback control use in conjunction turn-offs laser instrument, to prevent the injury of crossing of laser effectively.

4. according to right 1 described glaucoma filtering surgery automatic control laser operation device, it is characterized in that having the mode that the program ACTIVE CONTROL is turn-offed laser instrument, to prevent the injury of crossing of laser effectively.

5. according to right 1 described glaucoma filtering surgery automatic control laser operation device, it is characterized in that selecting for use pulse laser as main laser.

6. according to right 1 described glaucoma filtering surgery automatic control laser operation device, it is characterized in that selecting for use other color laser except that redness as guiding light laser.

7. according to right 1 described glaucoma filtering surgery automatic control laser operation device, it is characterized in that utilizing microcomputor program control to close guide light automatically in good time.

8. according to right 1 described glaucoma filtering surgery automatic control laser operation device, it is characterized in that having the medical record management data base, can with before the art and the record of the image document of postoperative on record, and patient's data managed.