CN-ESWL-BI Extracorporeal Shock Wave Lithotripter

What is Extracorporeal shock wave lithotripter?

Extracorporeal shock wave lithotripter (ESWL) is a non-invasive treatment device of kidney stones (urinary calculus) using an acoustic pulse (extracorporeal shock wave) to break a large stone into smaller pieces that can pass

Although calculus, especially calcium stones, are very hard, most of the 20% to 30% that do not pass out of the body on their own can be eliminated without surgery. The process called lithotripsy (from the Greek word for "stone crushing") breaks into tiny fragments most stones that are less than three-quarters of an inch across.

Repeated shock waves cause the kidney stone to disintegrate into tiny particles. These particles pass easily out of the body in the urine.

History

Lithotripsy and the lithotripter were developed in the early 1980s in Germany and came into widespread use in 1983. Within a few years, ESWL became a standard treatment of calculus.

How it works

The lithotripter attempts to break up the stone with minimal collateral damage by using an externally-applied, focused, high-intensity acoustic pulse. The sedated or anesthetized patient lies down in the apparatus' bed, with the back supported by a water-filled coupling device. An imaging system is used to locate the stone and aim the treatment. 

The successive shock wave pressure pulses result in direct shearing forces, as well as cavitation bubbles surrounding the stone, which fragment the stones into smaller pieces that then can easily pass through the ureters. The process takes about an hour. A ureteral stent (a kind of expandable hollow tube) may be used at the discretion of the urologist. The stent allows for easier passage of the stone by relieving obstruction and through passive dilatation of the ureter.

Extracorporeal lithotripsy works best with stones between 6 mm and 20 mm in diameter that are still located in the kidney and ureters.

The patients undergoing this procedure can, in some cases, see for themselves the progress of their treatment. If allowed to view the monitor, they may be able to see their stones change from a distinct bright point (or dark spot depending on whether the fluoro unit is set up in native or bones white) to a fuzzy cloud as the stone is disintegrated into a fine powder. 

The passage of stone fragments may take a few days or a week and may cause mild pain. Patients may be instructed to drink as much water as practical during this time. Patients are also advised to void through a stone screen in order to capture stone fragments for analysis.

What are the advantages of Lithotripsy?

Lithotripsy offers many advantages over stone removal through surgery. Some of those advantages include:

1. Reduction in complications
2. Reduction in pain
3. Reduced recuperation time
4. Performed on outpatient basis 95% of the time
5. Able to resume normal activities much sooner
6. Reduced cost
7. No incision

★ Main Characteristic

Relatively low voltage, high efficiency, and suitable for urinary system calculus

 No blind zone, effective for different kind of calculus. Effective for very short distance calculus and fat patient as well.

 Doctor can watch the treatment status simultaneously on the ultrasound monitor and decide whether to adjust the focal point at any time, thus realizing high hit rate and high work efficiency.

 Small in size, concise structure, easy to operate and maintain, low cost.

 C arm X-ray & Ultrasound Scanner Positioning, exact Positioning lithotripter.

★ The Utmost Important Function: Stone Localization

Digital Tracking Fast Localization System (Patent of our proprietary intellectual property rights) realizes High Performance Localization:

The shockwave generator move along the focal point, while the digital measuring system keeps tracking the calculus and shows the distance on the digital display screen

Unlike traditional and fussy manual handle localization system, our digital tracking fast localization system is swift and easy.

★ “Novel, very good clinical application value, leading technique in China and advanced level among global products.”

★ “Highly appreiated by CAS Shanghai science and Technology Advisory Center, 2007. ”

--《Science and Technology Novelty Search Report》

CAS Shanghai science and Technology Advisory Center

We are proud of our fast localization technique. It helps the shockwave generater move to the focal point automatically and improve the treatment effeciency.

The patent technique is later adapted by the imported machine (Dornier Lithotripter from Germany). This is the first time that Chinese technique help improve the foreign medical device.

★ Excellent Comprehensive Performance

Advanced Control Technique

Ø Using PC control technique, specially designed control system. More professional, smaller in size, more realiable, anti-interference.

Ø Using small keyboard control drawer instead of big control table. More intuitive, easier, and lower failure rate.

Outstanding Mechanical Performance

Ø Using spherical guide in localization system. Long last and stable mechanical performance.

Ø Electric machine with high-quality power system run smoothly and silentl

Ø The highly hard metal parts with precise arenitrogen treatment show good apperance as well as capability of antifraying, corrosion resisting and resistant to rust.

Ø The firm machine frame with sprayed surface is aesthetic, long lasting and resistant to rust.

Ø ABS engineering plastics shell is concise and aesthetic. The whole machine is firm, easy to move, and rational in construction.

Stand-alone Water Supply System for Magenetic Disc

Ø Auto circulating water cooling system

Ø Auto air exhausting system highly improve the lithotripsy effect.

Low Running Cost

Ø Running cost is taken into consider during our design phase. The runing and maintain cost of our lithotripter is low, thus saving the therapy and after-sale maintain burden for the consumers.

Ø The consice structure of the electrode help reduce the cost.

FEATURES

★Excellent positioning system

The original creation of the advanced digital tracking localization system makes the complex ultrasound localization easy and quick.

The only thing the patient should do is to lie down comfortably, and the localization and launch system can move back and forth ,left and right ,up and down,parallelly or along an arc, thus making the motion more agile and localization more swift.

Distance parallel institutions to rely on micro-computer digital direct-reading system can quickly locate stone

★ Electromagnetic shock wave

1.Low noise,long life,no electrode,low cost,wide use,easier maintenance.

2.The Electromagnetism Panel is using current model of vacuum

3.Lithotripsy treatment of long-term stability

4.Independent water supply system

★Excellent mechanical properties

1.Positioning system uses high-precision ball guide to maintain the long-term stability of mechanical properties

2.Solid surface of the machine frame through the spray treatment, beautiful, excellent anti-rust properties to ensure the durability

★Integrated structure of high-quality machine

1.The shell is made of ABS engineering plastic which makes the whole instrument firm,light,waterproof and easy to move .

2.The therapy room only occupies 20m² or more and doesn’t need any shield.

3.Compact,highly integrated device equipped with a removable round of treatment beds.

★The keyboard control box

The drawer style keyboard control box with light and IC digital control system ensure the correctness of the operation in the dark.

★Extracorporeal shock wave lithotripter

1.Optimized electromagnetic shock wave generation for omni-bearing treatment

2.Overhead mechanical arm

3.Patent ultrasound focalization technique with numerical control

4.Up-to-date shell design

★Better human design

Simplify mechanical focalization with ultrasound measurement

★More Intuitive operation

Higher success rate ensured by real-time calculi observation

★Computer Administer System (Optional)

The computer administer system can save the pictures before and after therapy, write down case history, and consequently make it easier to deal with the case history and to trace callbacks.

★ The New Generation Lithotripter!

² Brand New Shell Design

² More Visualize Therapy Way

² Optimal Electromagnetic Shockwave Generator

² More User-friendly Localization Logistic

Easier localization method. Transform the complicated localization process to a very easy way, just like using ultrasound machine for exmamination. The patent localization system can complete the calculus localization quickly by microcomputer measurement and display system.

Overhead type Arm Control

Ø The reflector and localization system work together with the novel arm. Doctor can adjust the arm to check the patient, just like check the patient by himself.

Ø Unlike the traditional way of keyboard control, the overhead type arm control method is more intuitive.

Multi-angle, Omni directional, No blind zone Treatment

Ø The generator can move up and down, back and forth, rotate and swing.

Ø The treament bed can also move up and down, left and right. No dead corner. No blind zone.

Digital Tracking Fast Localization System (Patent of our proprietary intellectual property rights)

Ø The fast localization system with ultrasound is small and convenient.

Ø The shockwave generator move along the focal point, while the digital measuring system keeps tracking the calculus.

Ø The ultrasound probe moves together with the localization system. The doctor can watch the treatment status simultaneously on the ultrasound monitor and decide whether to adjust the focal point at any time, thus realizing high hit rate and high work efficiency.

Ø Unlike traditional and fussy manual handle localization system, our digital tracking fast localization system is swift and easy.

Shockwave Generator Guarantee System

Ø Shock wave auto vacuum-pumping system ensures the high efficiency of the shockwave energy.

Ø Auto circulating water cooling system and generator auto air exhausting system ensure the long service life of shockwave generator.

Ø Diaphragm rupture auto alarm system minimizes the cost of consumption part.

★ Supersede the expensive imported medical device and export to other country.

★ Chosen by many top-grade hospital in China. 

SPECIFICATIONS

1. Shock source: Electromagnetic
(1) Reflector:
Second focal point and the generator surface ≥135mm

Realize the high efficient lithotripsy with low voltage.
(2) Lens

Discharge the electrode, it’s easy to wear off and should be replaced before each therapy of a new patient.
(3) Focal point:
X axis: diameter
Y axis: ≤±7mm
Z axis: ≤±80mm
(4) Shock wave
Pulse width: 1μs
Wave front: 0.5μs
(5) Operating voltage: 14-18KV
Shock energy: 98-144.5J±

The travel range of the reflector:
Back and fore：240±2mm
Right and left：240±2mm
Up and down：240±2mm    parallelly:100mm

2. Integrative Main Frame and Drawer Style Console
(1) Electrical source: 220V
Continuance: ≤1A
Pulse: ≤3A
(2) Small volume
Area required of the therapy room: ≥12sq.m.
(3) Ultrasound diagnosing device can be emplaced next to the ultrasound
localization system, thus realizing two usages in one machine.

(4) the biggest advantage of electromagnetic shockwave device is its long service life, which is over 100 thousand （10⁵）times.

3. Integrative Main Frame and Drawer Style Console

(1) Small volume
Area required of the therapy room: ≥12sq.m.
(2) Ultrasound diagnosing device can be emplaced next to the ultrasound
localization system, thus realizing two usages in one machine.

MAIN ACCESSORIES

Electromagnetism Panel, Lens

the biggest advantage of electromagnetic shockwave device is its long service life, which is over 100 thousand （10⁵）times.

Water Pocket

Water pocket is made of emulsoid product. It must be washed up by fresh water and hung in cool-shade place for drying. Be sure not to let it have a chance to touch orgunise—solvent petrol etc.

3. H.V.Capacitor0.5µF  

H.V.charge  range : 14-18KV

H.V. power storage range: 18-50J

4. Discharge Tube

5. Electrode: Sharp touch with the same tip of two electrode as the pattern of electrode as the pattern of electrode discharge, discharge times≥2000 . electrodes gap in no more than 3mm , the deviation of diameter direction of both touching tip is no more than 1 mm.

Different Shockwave Generator for Choice

Ø Electromagnetic Shockwave Generator

² Low noise, long service life, no electrode, wide use, easy to maintain.

² Unique electromagnetic disc design, vacuumization mode.

² Stable and effictive.

² Water pocket auto air exhuasting system.

² Stand-alone water supply system

Ø Electrohydraulic Shockwave Generator

² World’s Biggest generator cup, 230mm in diameter.

² High precision processing technique together with the   advanced manufature techonology help keep constant physical property.

² The patent electrode can focus enery with high-effeciency and low loss, at the mean time sheild the direct waves.

² Generator in big diameter help realize no-pain, no-hurt advanced therapy effect.

Our Extracorporeal Shock Wave Lithotripter ESWL-BI standard configuration is Electromagnetic Shockwave Generator.