NDLI: Shock wave effects in biomechanics

Please wait, while we are loading the content...

Shock wave effects in biomechanics

Content Provider	Springer Nature Link
Copyright Year	1998
Abstract	Focused shock waves convey energy from a source and deposit it in a localized region remote from the source. This mechanism is used to deliver crushing impulses to kidney stones in patients, but it may also be an undesirable source of tissue injury. Tissue injury occurs in extracorporeal shock wave lithotripsy (ESWL), a popular procedure used around the world to treat kidney stone disease. Shock waves can also be responsible for unexpected symptoms appearing remote from the site of blunt impact trauma. This paper describes two examples of the effects of focused shock waves on tissue. A victim of gunshot wound suffered specific neurological symptoms indicating highly localized injury to the spinal cord remote from the impact point and penetration of the missile. We suggest that wave focusing by thoracic vertebrae can concentrate energy into the spinal canal, with consequent injury to the spinal cord. Impulsive stress in repeated shock waves of order 20 MPa strength administered in ESWL is the mechanical stimulus of injury to the kidney. Research to increase the understanding of the causal relationship between the shock-induced mechanical stimulus and the consequent biomedical symptoms in the shock-wave treatment of kidney stone disease is described. The interaction of focusing shock waves with simple, planar polymeric membranes immersed in tissue-mimicking fluids has been studied. We have explored the nature of membrane failure in both cavitating and non-cavitating fluids. In water, thin nitrocellulose membranes are easily damaged during the passage of a lithotriptor shock wave by the collapse of proximal bubbles generated by cavitation. In uniform non-cavitating liquids, focusing shock waves do not by themselves cause damage, but after passing through tissue or simulated tissue, they do. Shocks with large amplitude and short-rise time (for example, in uniform media) cause no damage in non-cavitating fluids, while long-rise time, dispersed shock waves, though only moderately attenuated, do. A simple model of shearing at small scale provides a framework for accounting for the properties of the scattering medium and the membrane material in dynamic fatigue. The fact that the membranes exhibit fatigue-like behaviour suggests that a definition of dose can be formulated based on Miner’s Law. This definition gives the dose at failure in terms of the stress applied to the membrane by each shock wave and the failure stress. This analysis suggests that ESWL shock waves induce strain rates in tissue of order 10000 s$^{−1}$ and that behind a tissue, phantom membranes fail after a dose of about 1400 effective shock waves, of the same order as the number of shock waves typically used in lithotripsy therapy and research. Above strain rates of about 40000 s$^{−1}$, ESWL shocks cause virtually no damage.
Starting Page	579
Ending Page	596
Page Count	18
File Format	PDF
ISSN	02562499
Journal	Sadhana
Volume Number	23
Issue Number	5-6
e-ISSN	09737677
Language	English
Publisher	Springer India
Publisher Date	1998-01-01
Publisher Place	New Delhi
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Focused shock waves kidney stone disease blunt impact trauma extracorporeal shock wave lithotripsy Engineering
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Tandem shock waves for extracorporeal shock wave lithotripsy pacs reference: 43.80.vj.

Extracorporeal Shock Wave Lithotripsy: New Aspects in the Treatment of Kidney Stone Disease

Impact of Stone Size, Location, and Stone Composition on the Efficacy of Extracorporeal Shock Wave Lithotripsy for Residual Stone after Percutaneous Nephrolithotomy

Effects of hydrochlorothiazide on kidney stone therapy with extracorporeal shock wave lithotripsy

Pancreatic extracorporeal shock wave lithotripsy for a patient concurrent with autosomal dominant polycystic kidney disease: a case report

Extracorporeal shock wave lithotripsy in the pediatric population.

Disintegration of a Pancreatic Duct Stone with Extracorporeal Shock Waves in a Patient with Chronic Pancreatitis

The Outcomes of Extracorporeal Shock Wave Lithotripsy for High-Density Renal Stone on Non-Contrast Computed Tomography.

Chronic kidney disease affects the stone-free rate after extracorporeal shock wave lithotripsy for proximal ureteric stones

Shock wave effects in biomechanics

Similar Documents

Tandem shock waves for extracorporeal shock wave lithotripsy pacs reference: 43.80.vj.

Extracorporeal Shock Wave Lithotripsy: New Aspects in the Treatment of Kidney Stone Disease

Impact of Stone Size, Location, and Stone Composition on the Efficacy of Extracorporeal Shock Wave Lithotripsy for Residual Stone after Percutaneous Nephrolithotomy

Effects of hydrochlorothiazide on kidney stone therapy with extracorporeal shock wave lithotripsy

Pancreatic extracorporeal shock wave lithotripsy for a patient concurrent with autosomal dominant polycystic kidney disease: a case report

Extracorporeal shock wave lithotripsy in the pediatric population.

Disintegration of a Pancreatic Duct Stone with Extracorporeal Shock Waves in a Patient with Chronic Pancreatitis

The Outcomes of Extracorporeal Shock Wave Lithotripsy for High-Density Renal Stone on Non-Contrast Computed Tomography.

Chronic kidney disease affects the stone-free rate after extracorporeal shock wave lithotripsy for proximal ureteric stones

Shock wave effects in biomechanics