Morphologic changes in collagen fibers after 830 nm diode laser welding
Background and Objective The mechanism of laser tissue welding is elusive, but collagen transitions are somehow involved. Collagen fiber modifications observed after 830 nm diode laser welding are presented in this study. Study Design/Materials and Methods A 830 nm diode laser assisted longitudinal...
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| Veröffentlicht in: | Lasers in surgery and medicine 1997, Vol.21 (5), p.438-443 |
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| container_title | Lasers in surgery and medicine |
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| creator | Tang, Jing Godlewski, Guilhem Rouy, Simone Delacrétaz, Guy |
| description | Background and Objective
The mechanism of laser tissue welding is elusive, but collagen transitions are somehow involved. Collagen fiber modifications observed after 830 nm diode laser welding are presented in this study.
Study Design/Materials and Methods
A 830 nm diode laser assisted longitudinal aortorrhaphy was performed on 37 Wistar rats, with shots of 0.5 W in power, 8 sec in duration and 250 W/cm2 in irradiance. Energy utilized ranged from 400–550 J/mm2 for 1 cm‐length of anastomosis. After laser welding, histological modifications in collagen fibers were observed through optic, scanning electron, and electron microscopic examination.
Results
After laser welding, collagen fibers lost a proportion of birefringence. Under electron microscope, the different changes in collagen fibers were visualized being either fused, “roped,” swollen, or dissolved, surrounded by normal ones situated in the same zone.
Conclusion
These data suggest that diode laser heating denatured part of the collagenic fibers, and that these morphologic changes play an important role in laser welding. Lasers Surg. Med. 21:438–443, 1997. © 1997 Wiley‐Liss, Inc. |
| doi_str_mv | 10.1002/(SICI)1096-9101(1997)21:5<438::AID-LSM5>3.0.CO;2-R |
| format | Article |
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The mechanism of laser tissue welding is elusive, but collagen transitions are somehow involved. Collagen fiber modifications observed after 830 nm diode laser welding are presented in this study.
Study Design/Materials and Methods
A 830 nm diode laser assisted longitudinal aortorrhaphy was performed on 37 Wistar rats, with shots of 0.5 W in power, 8 sec in duration and 250 W/cm2 in irradiance. Energy utilized ranged from 400–550 J/mm2 for 1 cm‐length of anastomosis. After laser welding, histological modifications in collagen fibers were observed through optic, scanning electron, and electron microscopic examination.
Results
After laser welding, collagen fibers lost a proportion of birefringence. Under electron microscope, the different changes in collagen fibers were visualized being either fused, “roped,” swollen, or dissolved, surrounded by normal ones situated in the same zone.
Conclusion
These data suggest that diode laser heating denatured part of the collagenic fibers, and that these morphologic changes play an important role in laser welding. Lasers Surg. Med. 21:438–443, 1997. © 1997 Wiley‐Liss, Inc.</description><identifier>ISSN: 0196-8092</identifier><identifier>EISSN: 1096-9101</identifier><identifier>DOI: 10.1002/(SICI)1096-9101(1997)21:5<438::AID-LSM5>3.0.CO;2-R</identifier><identifier>PMID: 9365954</identifier><identifier>CODEN: LSMEDI</identifier><language>eng</language><publisher>New York: John Wiley & Sons, Inc</publisher><subject>Anastomosis, Surgical - methods ; Animals ; Aorta - surgery ; Biological and medical sciences ; Collagen - ultrastructure ; collagen fiber modification ; diode laser ; Laser Therapy ; laser welding ; Medical sciences ; Microscopy, Electron ; Microscopy, Electron, Scanning ; Microsurgery - methods ; Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects) ; Rats ; Rats, Wistar ; Technology. Biomaterials. Equipments. Material. Instrumentation</subject><ispartof>Lasers in surgery and medicine, 1997, Vol.21 (5), p.438-443</ispartof><rights>Copyright © 1997 Wiley‐Liss, Inc.</rights><rights>1998 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c4975-46bc23a8460be6fffd72fd611b154a09fff77be1978e433bc19c54959d759ec73</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2F%28SICI%291096-9101%281997%2921%3A5%3C438%3A%3AAID-LSM5%3E3.0.CO%3B2-R$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2F%28SICI%291096-9101%281997%2921%3A5%3C438%3A%3AAID-LSM5%3E3.0.CO%3B2-R$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,4024,27923,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=2048122$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/9365954$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Tang, Jing</creatorcontrib><creatorcontrib>Godlewski, Guilhem</creatorcontrib><creatorcontrib>Rouy, Simone</creatorcontrib><creatorcontrib>Delacrétaz, Guy</creatorcontrib><title>Morphologic changes in collagen fibers after 830 nm diode laser welding</title><title>Lasers in surgery and medicine</title><addtitle>Lasers Surg. Med</addtitle><description>Background and Objective
The mechanism of laser tissue welding is elusive, but collagen transitions are somehow involved. Collagen fiber modifications observed after 830 nm diode laser welding are presented in this study.
Study Design/Materials and Methods
A 830 nm diode laser assisted longitudinal aortorrhaphy was performed on 37 Wistar rats, with shots of 0.5 W in power, 8 sec in duration and 250 W/cm2 in irradiance. Energy utilized ranged from 400–550 J/mm2 for 1 cm‐length of anastomosis. After laser welding, histological modifications in collagen fibers were observed through optic, scanning electron, and electron microscopic examination.
Results
After laser welding, collagen fibers lost a proportion of birefringence. Under electron microscope, the different changes in collagen fibers were visualized being either fused, “roped,” swollen, or dissolved, surrounded by normal ones situated in the same zone.
Conclusion
These data suggest that diode laser heating denatured part of the collagenic fibers, and that these morphologic changes play an important role in laser welding. Lasers Surg. Med. 21:438–443, 1997. © 1997 Wiley‐Liss, Inc.</description><subject>Anastomosis, Surgical - methods</subject><subject>Animals</subject><subject>Aorta - surgery</subject><subject>Biological and medical sciences</subject><subject>Collagen - ultrastructure</subject><subject>collagen fiber modification</subject><subject>diode laser</subject><subject>Laser Therapy</subject><subject>laser welding</subject><subject>Medical sciences</subject><subject>Microscopy, Electron</subject><subject>Microscopy, Electron, Scanning</subject><subject>Microsurgery - methods</subject><subject>Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects)</subject><subject>Rats</subject><subject>Rats, Wistar</subject><subject>Technology. Biomaterials. Equipments. Material. Instrumentation</subject><issn>0196-8092</issn><issn>1096-9101</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1997</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kF1v0zAUhi0EGmXwE5BygdB2kc6fcdwhpBG2UqlrRcfX3ZHjOJ0hTYrdatu_x6FVuQBxZfucV49fPQiNCB4SjOnZyc2kmJwSrLJUEUxOiFLylJKReMNZPhpdTN6n05tr8ZYN8bCYn9N08QgNDvHHaIBJvOdY0afoWQjfMcaMYnmEjhTLhBJ8gMbXnV_fdk23dCYxt7pd2pC4NjFd0-ilbZPaldaHRNcb65Oc4aRdJZXrKps0OsTRnW0q1y6foye1boJ9sT-P0eery0_Fh3Q6H0-Ki2lquJIi5VlpKNM5z3Bps7quK0nrKiOkJIJrrOJEytISJXPLGSsNUUZwJVQlhbJGsmP0esdd--7n1oYNrFwwNpZtbbcNIBUnVLAsBhe7oPFdCN7WsPZupf0DEAy9XYDeLvS6oNcFvV2gBAREuwDRLvR2gQGGYg4UFhH6cv_7tlzZ6oDc64z7V_u9DkY3tdetceEQo5jnhNI_3e5cYx_-KvbfXv-o9fsdoekO6sLG3h-g2v-ATDIp4OtsDO_y2cfZl-k3oOwXY1qu3g</recordid><startdate>1997</startdate><enddate>1997</enddate><creator>Tang, Jing</creator><creator>Godlewski, Guilhem</creator><creator>Rouy, Simone</creator><creator>Delacrétaz, Guy</creator><general>John Wiley & Sons, Inc</general><general>Wiley-Liss</general><scope>BSCLL</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>1997</creationdate><title>Morphologic changes in collagen fibers after 830 nm diode laser welding</title><author>Tang, Jing ; Godlewski, Guilhem ; Rouy, Simone ; Delacrétaz, Guy</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4975-46bc23a8460be6fffd72fd611b154a09fff77be1978e433bc19c54959d759ec73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1997</creationdate><topic>Anastomosis, Surgical - methods</topic><topic>Animals</topic><topic>Aorta - surgery</topic><topic>Biological and medical sciences</topic><topic>Collagen - ultrastructure</topic><topic>collagen fiber modification</topic><topic>diode laser</topic><topic>Laser Therapy</topic><topic>laser welding</topic><topic>Medical sciences</topic><topic>Microscopy, Electron</topic><topic>Microscopy, Electron, Scanning</topic><topic>Microsurgery - methods</topic><topic>Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects)</topic><topic>Rats</topic><topic>Rats, Wistar</topic><topic>Technology. Biomaterials. Equipments. Material. Instrumentation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tang, Jing</creatorcontrib><creatorcontrib>Godlewski, Guilhem</creatorcontrib><creatorcontrib>Rouy, Simone</creatorcontrib><creatorcontrib>Delacrétaz, Guy</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Lasers in surgery and medicine</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tang, Jing</au><au>Godlewski, Guilhem</au><au>Rouy, Simone</au><au>Delacrétaz, Guy</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Morphologic changes in collagen fibers after 830 nm diode laser welding</atitle><jtitle>Lasers in surgery and medicine</jtitle><addtitle>Lasers Surg. Med</addtitle><date>1997</date><risdate>1997</risdate><volume>21</volume><issue>5</issue><spage>438</spage><epage>443</epage><pages>438-443</pages><issn>0196-8092</issn><eissn>1096-9101</eissn><coden>LSMEDI</coden><abstract>Background and Objective
The mechanism of laser tissue welding is elusive, but collagen transitions are somehow involved. Collagen fiber modifications observed after 830 nm diode laser welding are presented in this study.
Study Design/Materials and Methods
A 830 nm diode laser assisted longitudinal aortorrhaphy was performed on 37 Wistar rats, with shots of 0.5 W in power, 8 sec in duration and 250 W/cm2 in irradiance. Energy utilized ranged from 400–550 J/mm2 for 1 cm‐length of anastomosis. After laser welding, histological modifications in collagen fibers were observed through optic, scanning electron, and electron microscopic examination.
Results
After laser welding, collagen fibers lost a proportion of birefringence. Under electron microscope, the different changes in collagen fibers were visualized being either fused, “roped,” swollen, or dissolved, surrounded by normal ones situated in the same zone.
Conclusion
These data suggest that diode laser heating denatured part of the collagenic fibers, and that these morphologic changes play an important role in laser welding. Lasers Surg. Med. 21:438–443, 1997. © 1997 Wiley‐Liss, Inc.</abstract><cop>New York</cop><pub>John Wiley & Sons, Inc</pub><pmid>9365954</pmid><doi>10.1002/(SICI)1096-9101(1997)21:5<438::AID-LSM5>3.0.CO;2-R</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Anastomosis, Surgical - methods Animals Aorta - surgery Biological and medical sciences Collagen - ultrastructure collagen fiber modification diode laser Laser Therapy laser welding Medical sciences Microscopy, Electron Microscopy, Electron, Scanning Microsurgery - methods Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects) Rats Rats, Wistar Technology. Biomaterials. Equipments. Material. Instrumentation |
| title | Morphologic changes in collagen fibers after 830 nm diode laser welding |
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