2013年3月28日星期四

Hook Shot Fiber--For BPH Treatment

prostatic hyperplasia (BPH) treatment of the prostate. It has been specially and successfully developed for a safe and effective contact ablation of prostate with high-power laser.

Specifications
Advantages of the Hook Shot Fiber™: 
Working in contact mode: the Hook Shot Fiber™ optimizes the energy delivery in the procedure. 
Resistant: > 375.000 J (Traditional side fibers withstand only up to 275.000 J). 
Rapidity of surgery: with Hook Shot Fiber™ surgery is faster than with traditional side fibers. 
Short learning curve: it's the same surgical technique as TURP. 
User friendly: the Hook Shot Fiber™ simulates the hand of the surgeon thanks to the precise manipulator and the ergonomic design, giving a perfect control to the urologist. 
The typical shape of the fiber tip allows treating the upper end of prostate without any view obstruction in a radius of 360º. 
The rounded lens integrated in the tip of the Hook Shot Fiber™ constantly corrects the energy delivery. The energy applied is easily controlled thanks to a very precise delivery. 
No degradation of Hook Shot Fiber™ during the surgery thanks to the self-cleaning surface of the tip that avoids the tissue to stick on it and carbonize.
 
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2013年3月27日星期三

Experience in the use of fiber optic laser scalpel

The laser scalpel is used in clinical infrared laser, in addition to CO2 laser optical output is used outside. There are two general types of fiber, an ordinary optical fiber; the other is the head with stones of various shapes, and the output fiber directly processed into a conical, spherical or 90 ° angle of illumination of the special fiber, most of these fiber a one-time use. Special fiber to tapered fiber most commonly used. Theoretically, the optical head with a jewel more durable, but more trouble to use this fiber, most need to bring cooling device, when used properly will result in precious little head off. In addition, this fiber is expensive and difficult to spread. Special processing of fiber ends can only be used once on the failure, the price is very expensive. Ordinary optical fiber can be used repeatedly, so the cost is low, the two fiber characteristics in common use are also different. Strictly speaking, a special optical fiber output only at the general shape of the different stones with the first, or the output of the first ordinary fiber processed into various shapes in advance to facilitate the clinical use of special optical fiber as compared to ordinary optical fiber flexibility, such as cones can only be used for cutting, not can be used with other treatments, and general fiber output can be also used to cut through the dressing, gasification and solidification of such treatment. In practice, the retirement of the special fiber output head amputated, you can use when ordinary optical fiber, which can greatly reduce costs, reduce the burden on patients.


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donna@gigaalaser.com

2013年3月26日星期二

Diode Laser for Nasopharyngeal Carcinoma

Diode Laser for Nasopharyngeal Carcinoma
VELAS30W 980nm

1. The surface anesthesia of nose and pharynx mucosal.
2. Put the fiber into the Biopsy hole of the Endoscopy from the optical fiber, let its end show 0.5-1.0cm, then have a alignment of the nasopharyngeal carcinoma mass under watch.
3. Put the fiber into the Biopsy hole of the Endoscopy from the optical fiber, let its end show 0.5-1.0cm, then have a alignment of the nasopharyngeal carcinoma mass under watch.
4. If there is a residual, you can repeat the laser resection.

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donna@gigaalaser.com



2013年3月25日星期一

APDC 2013|10-12 May, 2013

APDC 2013|10-12 May, 2013
35th Asia Pacific Dental Congress 2013 Trade Exhibition.
We are looking forward to meet you during APDC 2013, please visit our booth at 2209.

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donna@gigaalaser.com

2013年3月24日星期日

Endovenous Laser Treatment of the Small Saphenous Vein

Purpose: 
Endovenous laser treatment is a minimally invasive technique for ablation of the incompetent great (GSV) and small saphenous vein (SSV). Compared with the GSV, fewer data are available on SSV laser ablation and are not validated. This multicenter prospective study evaluated the feasibility, safety, and efficacy of endovenous laser ablation to treat SSVs. Methods: Between January 2003 and January 2007, 204 patients (229 limbs) with CVD and incompetent SSVs (evaluated by the CEAP classification) who were eligible for surgery underwent consecutive laser ablation procedures. Many required additional treatment for varicose tributaries and perforator veins with phlebectomy and foam sclerotherapy, Energy was delivered to the vein wall by a 600- m optical fiber using 810-nm or 980-nm diode laser. Ablations were performed with duplex ultrasound (DU) guidance and tumescent anesthesia. Follow-up was with clinical examination and DU imaging.

Results:

DUimaging showed immediate occlusion of the SSV with no thrombosis in the proximal veins. No complications occurred intraoperatively. All patients had postoperative ecchymosis, but it was minimal. Three patients had distal thrombotic complications. Superficial phlebitis after complementary surgery occurred in three cases. Complete occlusion with absence of flow <2 months of follow-up was detected in 226 SSV (98.7%). It occurred 22 in patients with large SSV diameter. Recanalization was found in one patient at 12 months and in two patients at 24 months. Seven limbs had reflux in previously treated areas, treated segments, and segments in continuity with them. Three underwent an intervention to correct symptomatic reflux. The other four had no symptoms. After 1 year, eight limbs developed reflux in new locations and four underwent treatment. Symptoms resolved in most patients soon after the operation. The mean follow-up was 16 months (range, 2-39 months). After 8 to 12 months postprocedurally, the laser-treated veins were fibrotic and almos tindistinguishable on DU imaging from the surrounding tissues. In five patients (2.25%) postoperative paresthesia occurred >2 to 3 days postoperatively and persisted in the follow-up. No paresthesia occurred in our last series whenever a larger amount of tumescent cold saline was infused around the vein.

Conclusion: Endovenous laser ablation of the SSV has excellent early and midterm results. The prevalence of thrombosis and paresthesia is very low. Symptom relief is very good.



2013年3月21日星期四

Application of Laser Techniques in Operative Hysteroscopy




Resection of uterine synechiae and submucosa fibroids also belong to the well-established applications of laser in gynecology. In order to improve the fertility rate,the normal anatomy of the uterine cavity can be reinstated without major surgical intervention.After fluid-based distension of the uterine walls,the synechiae or fibroids can be visualized and coagulated

by diode laser(NIR)in a direct contact technique.

welcome to visit www.gigaalaser.com to get more info
donna@gigaalaser.com






2013年3月20日星期三

Diode Laser for Gynecology Applications


Diode Laser for Gynecology Applications

Open operations:
Superficial surgery
Cervical erosion
Leukoplakia of vagina
Condyloma acuminatum

Endoscopic surgeries:
Laparoscopy
Ovariotomy fallopiantube
Recanalization
Ovarian wedge resection
Endometriosis
Laparoscopic ovariectomy
Salpingoplasty
Multi-ovarian cyst surgery
Myomectomy
Ovariectomy, ovarian drilling
Hysterectomy, cervix circular resection
Linearity salpingectomy for ectopic pregnancy
Endometrial ablation
Intrauterine leiomyoma coagulation and resection
Intrauterine
Polypectomy
Membrane separate

Welcome to visit www.gigaalaser.com to get more info


2013年3月19日星期二

What Cheese dental laser do in your practice?


Minor intervention, major effect
Better healing process and less postoperative pain: By using a laser, you will expand your existing treatment alternatives with a number of new applications, added to traditional treatment methods.

Broad spectrum of applications
SIROLaser Advance and SIROLaser Xtend offer a unique spectrum of applications. But that is not all: Pain-free treatment leads to more relaxed patients, more efficient treatment procedures and permanently good clinical results.

Surgery
Abscess, Biopsy, Epulis, Fibroma, Fistula, Uncovery of hidden teeth, Frenectomy, Frenotomy, Gingivectomy, Gingivoplasty, Hemostasis, Implant uncovery, Incisions/Excisions, Incisions and draining of abscesses, Crown lengthening, Laser assisted flap surgery, Leukoplakia, Operculectomy, Papillectomy, Sulcular debridement, Vestibuloplasty, Excisions of lesions and hyperplasias

Endodontics
Endo. germ reduction*, Gangrene*, Pulpotomy

Periodontology
Perio. germ reduction*, Periimplantitis*, Sulcular debridement

Miscellanuous
Aphthous ulcers, Desensitization*, Herpes*, Bleaching*

Tooth whitening

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2013年3月18日星期一

Semiconductor laser treat chronic rhinitis under nasal endoscope


Since the Jako 20 Century 70's introduction of laser technology to the ENT field, many scholars have tried to various laser for the treatment of chronic rhinitis .all the many advantages of laser performance. The author in August 2002 to February 2003 under nasal endoscopy during the use of GaAlAs semiconductor laser treatment for the treatment of 32 patients with chronic rhinitis patients achieved satisfactory results.

1.materials and methods

1.1
clinical data 32 patients were 18 males and 14 females, aged 17 to 72 years, mean 39 years, persistent nasal obstruction for more than six months, up to 8 years, part of a runny nose, tinnitus, dripping with decongestants is not sensitive; who had no history of nasal and sinus surgery; sinus CT exclude sinusitis, nasal polyps, turbinate bone hypertrophy. Nasal endoscopy, bilateral in 18 cases of chronic hypertrophic rhinitis, allergic rhinitis and 8 cases, 3 cases of chronic simple rhinitis, nasal septum deviation and inferior turbinate back with varying degrees of proliferative lesions in 3 cases.

1.2
Treatment methods Nasal endoscopy (Stryker Corporation production), diameter 4 mm 0 ° endoscope angle view, TV monitoring system (Trinitron Color Video Monitor, 1998 by Sony corporation), using the GaAlAs diode laser therapy, a wavelength of 810 nm, maximum output power of 25 W, with 600μm SMA905 standard output fiber (contact), aiming beam for the 650nm red laser diode.

Patients were supine, with 1% tetracaine cotton pad into the nasal cavity three times as the mucosal surface anesthesia, hypertrophic mucosa at the back end of middle turbinate can use 1% lidocaine local anesthesia under endoscopic screening recess butterfly . Fiber laser output issued in endoscopic nasal turbinate hypertrophy and polypoid changes organizations, output power 12 ~ 15 W, laser light with continuous output mode, along the free margin of the inferior turbinate direct gasification front to back, to the organization contracted the nasal cavity to form a good airway and the back end of inferior turbinate, the exposed area after the nostril diameter not less than 5mm. Observe patients after 1 h, no bleeding, and adverse reactions. 1% ephedrine nasal cavity, 5% cortisone alternating nasal fluid, clear nasal discharge 2 times, 1 week after basically no nasal discharge, 2 weeks to recover basic .

1.3
Evaluation standard markedly: nasal patency, ventilation function well; effective: nasal ventilation significantly improved than before; invalid: no improvement in nasal congestion.

2. results
Markedly effective in 23 cases (72%), effective in 8 cases (25%), 1 patient (3%), the total effective rate 97%. 1 patient Department of the side of the nasal septum and inferior nasal a part of the phase of bone paste, postoperative ventilation without improvement.

3.discussion
In clinical work, but not for chronic rhinitis and sinusitis patients, often with conventional
surgery, electrocautery, microwave, freezer and other treatment. Drawback is that easy to intraoperative and postoperative bleeding, local tissue reactions after re-take repeated dressing changes 2 to 3 weeks.
Semiconductor laser is just the last few years developed a new generation of lasers, it not only inherits the YAG laser less bleeding, shorter operation time, trauma, etc, and also has equipment small size, high power, easy to operate, through the optical fiber into operation field, no cooling device, the advantages of moving at any time, by many scholars of all ages. Author with endoscopic guidance, vision clear, the back end of the nasal cavity lesions were visible range. In operation, the author found that the semiconductor laser has its own unique advantages. First, it overcomes ,CO2 laser can not be conducted by the shortcomings of optical fiber and semiconductor laser fiber small, flexible operation at any angle and inferior turbinate contact any shaping operation can be of inferior turbinate, nasal ventilation to expand the area to establish an effective airway. Second, with the YAG laser compared to the penetration depth of about 1 ~ 2 mm, while the YAG laser is 4 ~ 6 mm, so the surrounding tissue may result in less chance of injury, this group of patients after nasal edema and infiltration a relatively light, fewer dressing changes, patients recovered rapidly. Third, its a light touch can reduce the inconvenience of surgery in the light focus, not damage surrounding tissue, to facilitate accurate operation. Semiconductor laser wavelength 810nm, very close to the infrared part of the machine's electro-optical conversion rate is high, it solidified the role of blood vessels better. The gasification and solidification of the function to less bleeding. The group of 32 patients without bleeding in one case the situation more or repeated bleeding. However, allergic rhinitis or accompanied by severe septal deviation, turbinate bone hypertrophy, a simple semi-conductor laser treatment can not improve the nasal congestion, must be combined with other treatments.
In summary, I believe that semiconductor lasers with less damage, shorter operative time, less bleeding were mild, and rapid recovery, is a better means of treatment of chronic rhinitis.

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donna@gigaalaser.com



2013年3月17日星期日

Diode laser in uvulopalatopharyngoplasty


Methods:
Laser assisted uvulopalato-pharyngoplasty(LAUP) were performed on the
patient suffering from obstructive sleep apnea syndrome (OSAS).The apnea hypopnea
index(AHI) ,SaO2and clinical symptoms before and after treatment were observed. 

Result:
The therapeutic effect was high, with less bleeding, quick recovery and few complication.

Conclusion :
Diode laser for UPPP can enlarge the horizontal air passage of soft palate.

Key words: 
Laser surgery; Sleep apnea syndromes; Uvulopalatopharyngoplasty


Surgical treatment of obstructive sleep apnea syndrome (OSAS) The purpose is to narrow
the site of the upper airway to expand. Laser cutting has a good function and hemostatic function, can be used to uvulopalatopharyngoplasty (UPPP). April to August, 2006 our hospital 30W diode laser uvulopalatopharyngoplasty surgery (LAUP) 29 cases, there is efficiency of 86.21%.


Surgical Methods: 
30W diode laser, wavelength 810nm, power is 15 ~ 20W, diameter of 1000μm bare fiber light guide. Intraoperative blood loss 15 ~ 20ml.

1 First bilateral tonsil dissection: 
15W-2s-2s non-contact cutting edge of pre-coagulation mucosa, contact-type anatomical dissection tonsillectomy. Tonsillar fossa haemorrhage near the 15W-2s-2s short pulsed laser irradiation.
2 The soft palate resection of the uvula and part of the organization: 
20W continuous contact alone, in the palatal pits 0.5cm below the level of uvula removed, some organizations and pharyngeal soft palate palatal arch. Free edge back after excision of the soft palate may come into contact with the posterior wall of pharynx, soft palate resection margin higher than the trailing edge of the leading-edge 3mm, fiber aspect equidistant 4:00 into the soft palate, the depth of about 1cm, 15W-2s work shot in situ (inter-organizational laser therapy, ILT). Interrupted suture around the margin of the soft palate, bilateral tongue,
pharyngeal arch on the palate were interrupted suture.
3 After reaction: 
24h palatal wounds after the formation of a white pseudomembranous, 5 ~ 10d pseudomembranous gradually fall off, 2 weeks after wound healing. Mild postoperative pain, 2d relieve pain, talk normal; nasal mild regurgitation in 7 cases, were to resume within 2 weeks into the regular food. No other complication.

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donna@gigaalaser.com




2013年3月14日星期四

Diode laser for ENT (ear, nose and throat) applications

The uvulopalatopharygoplasty (Snoring treatment )
Cavernous Hemangioma Nose Bleeding treatment
Sinus ethmoidectomy
Rhinitis (chronic, hypertrophic, allergic)
Nasal polypectomy turbinectomy
Endoscopic functional sinus surgery
Optic fibre nasopharyngoscope related
Adenoid facies adenoidvegetation tonsillectomy (partial)
Subglottic stenosis vocal cord polyp surgery
Neoplastic Obstruction

donna@gigaalaser.com
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2013年3月13日星期三

Laser Treatment For Gynecology


Your recent Pap smear and biopsies have shown some abnormalities that will need treatment. The laser is an excellent tool for this treatment. The laser uses a powerful light to destroy abnormal tissues. Laser treatment has little effect on normal tissues and healing is fast. The treatment takes about fifteen minutes. 
Your laser treatment may be done in the outpatient clinic, the doctorís office or the operating room. Laser treatment also may be used to treat lesions of the vagina and vulva.


How is Laser Treatment done?
The doctor places a speculum in the vagina (like taking a Pap smear), so the cervix (mouth of the womb) can be seen. The laser beam is then turned on and the abnormal cells are slowly destroyed or vaporized. A local anesthetic may be used, however, most women have some mild cramping.


Important safety points should be noted:


  • Protective safety glasses must always be worn to avoid accidental eye injuryn if the laser beam is misdirected.
  • Occasionally, you may feel a hot sensation from the heat that builds up from the laser. Tell your doctor if you feel uncomfortable or need to move. The laser can be turned off temporarily. If you move suddenly, the laser beam could strike an area not being treated. This could cause pain or bleeding, so please tell the doctor if you have any discomfort.
  • The treatment will produce a smoke-like vapor. This smoke will be removed with a suction-type machine that makes a sound like a vacuum cleaner.
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2013年3月12日星期二

Comparison of Diode Lasers in soft- tissue surgery using cw- and superpulsed mode: an in vivo study

Purpose :
Dental soft tissue surgery by diode lasers in cw- mode often causes carbonization of the tissues with following necrosis and a delay of wound healing. In vitro studies have already shown, that superpulsed diode laser surgery has much less disadvantages for the tissues in histological approach. Purpose of this study is to investigate in vivo, if superpulsed mode of operation can realize an improvement for surgeon and patient in soft tissue surgery.

Materials and methods :
26 patients were treated by diode lasers in different modes of operation for soft tissue surgery. 12 patients were treated by superpulsed Elexxion Claros diode laser :
810nm; 10- 50 W peak ; 10- 20 μs pulse duration; 12000- 20.000 Hz; 400μm fiber and 14 patients were treated by Vision MDL-10 diode laser : 980nm; 2,5 W; cw- mode and also 400 μm fiber.
Clinical treatment was documented by photos and questionnaires for patients and surgeons. Questions concerned: carbonization, coagulation, cutting speed, pain, swelling, bleeding, need for drugs, functional reduction and fibrine layer on wounds- during treatment, directly after treatment, after 1 day, after 3 days and after 1 week.

Results
The clinical observations and the questionnaires showed in most cases significant differences between cw- mode and superpulsed diode laser treatment in surgery. There was less carbonization in the superpulsed group.
The cutting speed was higher and the cut itself more defined and deeper by using superpulsed mode.
Superpulsed laser treatment had a shorter healing time than cw- mode treatment; the fibrine layer was build faster and also the removal of it was faster.
There was often no swelling after superpulsed diode laser treatment; and if a
swelling occured it was smaller and quicker gone as in cw- mode treatment.
The duration of pain was shorter and the amount of pain smaller in the superpulsed group, therefore the patients in the superpulsed group needed less analgetic drugs.
There was less functional reduction in time and amount for the superpulsed group. Only coagulation ability was better in the cw- mode group.

Conclusion :
Clinical studies have shown that superpulsed diode laser surgery is superior to continuous wave done treatment. Carbonization and thermal damage of the tissues can be reduced to a minimum, therefore healing is faster as in cw- mode surgery. Generation of a soft tissue cut is faster and more precise. Patients have less pain; in amount and time period. The need of drugs is reduced. There are less functional restrictions and there is less swelling.
The advantages of superpulsed mode of operation for soft tissue diode laser surgery are evident. Continuous wave mode should no longer be implemented in diode laser surgery.
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donna@gigaalaser.com

2013年3月7日星期四

Laser as good as surgery(EVLT) [AESTHETIC]


Laser as good as surgery
Mr. Michael Gough and Rosie Beale, Leeds General Infirmary, UK, have presented data comparing endovenous laser treatment (EVLT), a minimally invasive out-patient technique to the current standard of surgery for varicose veins in a randomized controlled trial in patients with saphenofemoral and long saphenous vein incompentence (<90% occlusion) Gough told Vascular News that the advantages of EVLT are that it avoids the need for general anaesthetic, leaves no scars, carries a lower risk of complications, has a faster recovery time and is potentially less expensive-both directly and indirectly. Assessment of patient suitability for EVLT requires ultrasound conformation of the sites of venous incompetence.


Not all patients with varicose veins caused by saphenofemoral/saphenopopliteal incompetence are suitable for EVLT. Although uncommon, a very tortuous greater or super saphenous vein may be a relative contra-indication owing to difficulties in advancing the guide-wire. Nevertheless, around 71% of patients with primary varicose veins are suitable for EVLT.

Beale presented results of the study so far, covering 96 limbs in 81 patients: 41 female, 40 male, with a median age of 49 years. All subjects had similar classifications of disease and maximum long saphenous vein diameters. Patients received one of EVLT-1 (810nm diode laser, 12 watts pulsed laser), EVLT-2 (14 watts continuous laser) or surgery to treat their varicose veins. Prior to treatment their veins were assessed using the Aberdeen Varicose Vein Score-AVVS and duplex ultrasound. Subjects kept an analgesic diary for one week following treatment and also recorded analogue pain scores. Six weeks post treatment they received sclerotherapy, followed by another AVVS and duplex ultrasound session at three months. The principal outcome measures were abolition of saphenofemoral/long saphenous vein incompetence (as measured by the AVVS).

Ultrasound findings for the saphenofemoral junctions at three months showed that all 21 limbs that underwent EVLT-2 had competent veins, said Beale. This compared to around 98% of the 26 that received surgery and 81% of the 34 that had EVLT-2. In the long saphenous vein the findings were more alike, with both laser treatments succeeding in more than 90% of limbs, while surgery"s success rate was around 88%. All groups experienced a significant improvement in AVVS: EVLT-1 went from 13.17 pre-treatment down to 5.61 post-treatment; EVLT-2 went from 11.55 to 3.94; and surgery, from 14.31 to 5.80, but there were no inter-group differences, Beale added.

While analgesia use and pain scores were similar across the three groups, there was one area where both types of laser treatment scored highly: return to normal activity and work. Patients, on average, went back to work a mere four days after receiving laser treatment, while patients recovering from surgery took an average of 14 days to return to normal activity and a total of 17 days to return to work.

However, in a third of cases, laser treatment is not enough on its own.
Thirty-seven percent of cases required delayed sclerotherapy (1-2 treatments) to achieve satisfactory cosmesis.
"Scelotherapy has to be built into treatment for EVLT," Beale commented. In terms of complications, eight (12%) of the subjects who received EVLT developed phlebitis, while two (3.8%) had nerve injury. In surgery, two (6.7%) subjects had wound problems while four (15%) developed nerve injury and one developed acute respiratory distress.

"In summary," said Beale, "EVLT shows a comparable abolition of long saphenous vein reflux and symptom control in all groups. There is a shorter recovery time following EVLT." Gough added, "EVLT-1 and -2 had similar results and so either can be used. We have opted for EVLT-1 as it is easier and more accurate to administer the correct laser dose Longer terms follow-up is obviously needed to prove conclusively that EVLT is as good (it will probably be better) as surgery."
He concluded: "The randomized trial is still ongoing although it is unlikely that many more patients will be recruited-most patients prefer EVLT to surgery and are thus not very willing to be randomized. We will stop at 120 patients, which we have already reached but some are still awaiting their follow-up." 

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donna@gigaalaser.com

2013年3月6日星期三

Clinical Application of Percutaneous Laser Disk Decompression


Key words:
Diskectomy, percutaneous; Laser surgery; Radiology, interventional

In recent years, the author of semi-conductor laser therapeutic apparatus using percutaneous laser disc decompression (percutaneous laser disk decompression, PLDD) treatment of lumbar disc herniation, has achieved some results. Automatic aspiration of the technology and compared to excision, a simple, safe, injury, etc., are presented below.

Materials and Methods

1. Clinical data:
100 cases collected by the hospital to be diagnosed as clinical lumbar disc herniation by CT or MRI in patients with a clear diagnosis for PLDD treatment, follow-up of 6 to 18 months. 100 cases of patients, male 56 cases, 44 cases of women aged 17 ~ 72 years old, the average age of 48.5 years old.

Course of disease and clinical performance: the initial incidence of 2 months to 20 years, clinical low back pain with radiation leg pain, inability to walk, limp, the affected muscle atrophy, limb cold.

Physical examination: unilateral or bilateral limb elevation test positive, the level of the corresponding disc next to the spinous process tenderness. After pre-treatment CT or MRI examination. L4 ~ 5 of them were 65 cases of disc herniation, L5 ~ S1 disc herniation, 35 cases have been more than six weeks of conservative treatment is invalid or the result is not significant.

Semiconductor Laser Therapeutic Apparatus used: wavelength 980 nm, the end of the maximum output power 15 W. Optical fibers: 400 nm; 18G needle 2, a long 15 cm; Y-type switch 1.

Selected for the following conditions have PLDD indications:
(1) clinically diagnosed as lumbar disc herniation, with recent (within 3 months) CT or MR for the diagnosis of lumbar disc herniation were clear;
(2) 6 weeks of conservative treatment fails;
(3) the extent of leg pain than back pain;
(4) positive straight leg raising test;
(5) of sensory, motor response, tendon reflexes were diminished.
And for the following contraindications:
(1) there is a serious clinical bleeding tendency and who can not be corrected;
(2) spondylolisthesis;
(3) disc was broken from the Free State;
(4) spinal stenosis (bony, ligament thickening, calcification).
(5) Marking the level of the history of trauma or surgery has been the history of lumbar intervertebral disc or Chemonucleolysis history;
(6) significant stenosis in the vertebral space;
(7) clear mental disorder;
(8) pregnant women.

2. Operation Methods: Patients from lateral position (side up) in the DSA machine tools, positioning under fluoroscopy puncture, topical 2% lidocaine anesthesia 5 ml (from the skin to the superficial muscle layer), with 18G, length 15 cm of the needle away from the open side of vertebral spinous process centerline 8 ~ 14 cm Department (L4 ~ 5 to 8 ~ 12 cm, L5 ~ S1 for 10 ~ 14 cm), under the supervision of the perspective from the rear side into the needle, needle sagittal direction of the trunk surface and 45 ° ~ 60 ° angle. Needle is located in the best position of the corresponding intervertebral space after the 1 / 3 the level of the Agency (Figure 1), after the success of lateral puncture, rotating C-arm, is situated to the perspective, the spinous process at the level of the needle puncture nucleus, the L5 ~ S1 disc iliac wing due to stop before the needle into the needle bent into approximately 160 ° around (Figure 2), after the correct position, pull out the needle puncture needle core, will be 0.4 mm thick needle through the fiber-optic delivery into, and beyond the top needle 0.5 cm, the use of Y-shaped lock switch and then to the end of the output power 15 W, pulse time of 1 s, interval time of 5 s on the nucleus points to 1 point or more laser decompression. Operation, when patients have a bulging waist flu, with space needle by Y-switch liposuction, each disc to the energy by about 1 200 ~ 1 300 J (L3 ~ 4, L5 ~ S1), 1 300 ~ 1 500 J (L4 ~ 5), the whole process about 20 ~ 30 min.

Results

100 cases of 100 patients with intervertebral disc, the success rate of puncture was 100%, follow-up period was 6 to 18 months. Reference MacNab [1] to evaluate the standard cure, 72% efficient. Of which 22 patients were cured and 50 cases of effective, 28 cases were followed up for 6 months without improvement in symptoms was considered null and void, without any complication. According to the affordability of different patients, respectively after 3,6 months or 1,3,6,12-month CT or MRI follow-up visit, some cases (24/100) 1 month for only the performance of the Department of nucleus density circular lower three months after the performance of some patients to varying degrees for the disc back to Steiner (49/100), part of cases (23/100) had no significant disc back satisfied, but to improve symptoms in varying degrees.


Discussion

Principle PLDD through laser vaporization of the nucleus pulposus for cutting, as well as the solidification of the part of disc nucleus pulposus to reduce intradiscal pressure and volume, so as to achieve the purpose of treatment of lumbar disc herniation. In recent years the use of laser disc decompression has been in clinical and medical skills to gradually extend the awareness of staff and patient acceptance, more in line with the interventional radiology Development trends and operation of micro-trauma of the requirements, should be promoted as a new method for the treatment of disc herniation.


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donna@gigaalaser.com


2013年3月5日星期二

Long - term Effect of Transscleral Diode Laser Cyclophotocoagulation in Treatment of Refractory Glaucoma


AIM: 
To evaluate the long-term efficiency of diode laser transscleral cyclophotocoagulation (DL Tscpc) for refractory glaucoma.


METHODS: 
Retrospective analysis was made in 431 eyes with refractory glaucoma treated by DL Tscpc
with lower energy power (1.5-2.5W) and more laser spots (26-34). Intraocular pressure (IOP), visualacuity, ocular symptoms and complications were observed after DLTscpc. Patients were followed up over 36 months.


RESULTS: 
Mean pre-operative IOP was (56.2±12.7)mmHg which was significantly different from the final follow-up mean IOP (17.3±8.8)mmHg. (P < 0.05). The success rate was 94.4% (68/72). Postoperative visual acuity kept no change in 399 eyes; elevated in 30 eyes and decreased in two eyes. The pain sense disappeared or remarkably relieved. The main complications included mild uveitis and hyphemae. Atrophy of eyeball occurred in two eyes.

CONCLUSION: 
It is concluded that DL TScpc is a simple, safe and effective therapy for eyes with refractory glaucoma through long-term observation.

KEYWORDS: 
Diode laser; cyclophotocoagulation; refractory glaucoma


Introduction
Refractory glaucoma refers to the application of drugs and surgery are difficult to control glaucoma. Used to the conventional type of glaucoma filtration surgery, or ciliary body destructive procedures, such as frozen or ciliary body ciliary body electric coagulation. However, the clinical effect of Poor, and more complications. Our diode laser transscleral cyclophotocoagulation (diode laser transclero-cyclophotocoagulation, DL Tscpc) treatment of refractory glaucoma 690 cases of 697, of which 430 cases of 431 that we tracked 3a above, results were satisfactory. Are reported below.


1 Subjects and Methods
1.1 Object
430 cases of 431, male 255, female 176, aged 16 to 89 (mean 52) years old. These include neovascular glaucoma, 213 (49.4%), complex ocular trauma secondary glaucoma 17 (3.9%), high intraocular pressure after silicone oil injection for 8 (1.9%), primary angle-closure glaucoma absolute phase 187 (43.4%), primary open-angle glaucoma, 4 (0.9%), congenital glaucoma in 2 eyes (0.5%). Are pre-treatment application of multi-drug combination therapy intraocular pressure is still ≥ 40mmHg (1mmHg = 0.33kpa). Pre-treatment visual acuity light perception to 0.25. Instruments is the semiconductor lasers, wavelength 810nm, power 100 ~ 2 500mW, time of 10 ~ 5 000ms. Cpc probe of its front-end for a round cap with a contact probe, the diameter of 3mm, the laser beam can be precisely focused on the location of the sclera after 1.5mm.


1.2 Methods: 
The preoperative intraocular pressure lowering drugs was added, where appropriate, will
be reduced to the lowest possible level of intraocular pressure. Patient was supine, with 20g / L lidocaine 2.5mL and 7.5g / L bupivacaine 1.5mL mixed Across retrobulbar anesthesia, the laser fiber placed in contact with the first central government after the corneoscleral margin of 1.5 ~ 2mm Department, probe directed towards the ciliary body crown, hit radio range of Cape scleral edge of the week, in addition to internal and external rectus two time zones, the uniform distribution of 26 ~ 34 hit radio spots, each spot between the interval 1.5 ~ 2.0mm, laser energy use 1.5 ~ 2.5W, time 1.0 ~ 2.0s, starting from the 1.5W, hit fire and did not hear the explosion that increased 0.1W, if the continuous treatment of 3:00 have pops and a decrease 0.1W. After partial adrenal cortex hormones and antibiotics given to drug points, eyes, and symptomatic use IOP lowering drugs, oral pain medications when necessary. If the postoperative intraocular pressure control is not satisfactory, 1mo after re-DLTscpc, methods and the same as the initial
treatment. The patient's visual acuity, intraocular pressure, as well as the conjunctiva, cornea, anterior chamber, iris, lens and other organizations, the situation changes and conduct follow-up observation of medication, follow-up period were less than 3a.


2 Result
2.1 Efficacy criterion: cure: After treatment, IOP ≤ 21mmHg; markedly: more than 3 antihypertensive drugs with IOP ≤ 21mmHg, and decreased by 20% compared with before surgery. Invalid: intraocular pressure decreased less than 20%.

2.2 IOP: The mean preoperative intraocular pressure (56.2 ± 12.7) mmHg, mean IOP of last follow-up (17.3 ± 8.80) mmHg. After a sub-DL Tscpc IOP 356 eyes of 431 patients were lower than 21mmHg, surgery rate was 82.6%. 69 Line 2 DL Tscpc surgery, of which 57 IOP ≤ 21mmHg, 3 Yan IOP decreased by 20% compared with preoperative patients without eye pain discomfort. Operation invalid 9 eyes, 2 for complex ocular trauma secondary glaucoma, four for neovascular glaucoma, one for primary angle-closure glaucoma absolute period, two for the high intraocular pressure after silicone oil injection; invalid After statistical analysis, operation efficiency with age, gender, disease duration, IOP was no significant correlation (P> 0.05). In this group of 431 post-operative 1wk; 1, 3, 6, 12, 24, 36,48, 60mo intraocular pressure were observed in different periods of analysis, were lower than preoperative IOP, differences were statistically significant 


2.3 Vision: 431 eyes of 399 no change in visual acuity. 30 visual acuity was improved, including 11 from the pre-treatment visual acuity after treatment index / 30cm up to 0.04 ~ 0.05, between 8 after treatment visual acuity from 0.02 to 0.06 between pre-treatment increased to 0.1 ~ 0.25, 10 from the light-sensing to improve to the index / 30cm ~ 0.02. 2 from light perception visual acuity dropped to light perception.

2.4 Subjective symptoms: After treatment, 431 were eye pain disappeared or eased.

2.5 Complications: postoperative hyphema 7, anterior chamber exudation 13, symptomatic hemorrhage after treatment 1mo absorption, inflammation disappeared. 2 eyeball atrophy, a row before surgery Time cyclocryotherapy, a line three times in patients with transscleral cyclophotocoagulation. 

2.6 Treatment of the relationship between the number and efficacy of 431 eyes of 356 (82.6%) treatment 1 Successful, 57 (13.2%) treatment of two successful, 7 eyes (1.6%) treatment three times successfully, the cumulative success rate (97.4%).

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2013年3月4日星期一

Endovenous laser ablation of varicose veins with the 1470-nm diode laser


Background
Endovenous laser ablation (EVLA) is one of the most accepted treatment options for varicose veins. In previous studies conducted with a laser at 810 to 1320 nm, paresthesia, pain, and ecchymosis were common adverse effects. We hypothesized that a lower linear endovenous energy density (LEED), as used with 1470-nm diode laser fibers, would lead to a reduction in adverse events.

Methods
We conducted a prospective, nonrandomized observational cohort study of 312 consecutively treated lower limbs legs in 286 patients. Of these, a bare laser fiber (ELVeS-plus kit) was used to treat 168 legs in 150 patients (group 1), and a radial fiber (ELVeS-radial kit) was used in 144 legs in 136 patients (group 2). Laser treatment was performed in the great saphenous vein. Follow-up for all patients was 3 months. The primary end point was the occurrence of ecchymosis and bruising. This was correlated to the reduced LEED needed with the 1470-nm diode laser.

Results
Laser fiber (odds ratio [OR], 22.3; 95% confidence interval [CI], 20.2-24.5) and body mass index (OR, 0.35; 95% CI, 0.15-0.55) were identified as independent parameters for LEED. In group 2 compared with group 1, LEED in the great saphenous vein could be reduced from 79.4 ± 9.1 to 57.4 ± 10 J/cm (P < .0001). LEED was an independent parameter for skin bleeding (OR, 1.04; 95% CI, 1.017-1.058). Ecchymosis and bruising were significantly less frequent in group 2 than in group 1 (P < .0001). The need for analgesia was low, with 103.08 ± 15.34 mg diclofenac-sodium in group 1 vs 82.08 ± 18.86 mg in group 2 (P < .04). Occlusion with elimination of reflux was achieved in 100% of group 1 and group 2 (P < 1). No recanalization occurred at follow-up.

Conclusion
Endovenous laser treatment of varicose veins in the great saphenous vein with the 1470-nm diode laser is safe and highly effective. The lower energy level needed using the radial laser fiber significantly minimized adverse effects compared with the bare laser fiber.

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2013年3月3日星期日

Diode Laser as A Therapeutic Tool


Lasers have been used safely as a therapeutic tool for over 30 years. Instead of ablating tissue, LT stimulates cellular activity that improves the speed and quality of healing. In over 1,800 publications worldwide, LT has demonstrated its non-invasive, non-toxic quality, and its ability to augment and in some cases, replace, pharmaceuticals and surgical intervention. LT is most often used as a primary medical treatment, but is also effective as a complement to other modalities, such as needle acupuncture and chiropractic adjustment. Acupuncturists, Chiropractors, Physical Therapists, Dentists, Osteopaths and M.D.'s currently use LT for a variety of problems; including the treatment of acute pain and chronic degenerative conditions, improving the speed and quality of wound healing, and for muscle, tendon and ligament injuries.

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