Definition : Instruments designed to access, examine, diagnose, and/or treat internal tissues and/or organs of the human body otherwise inaccessible through natural canals or body cavities. These instruments usually consist of an outer sheath, a lighting system (e.g., fiberoptic), and a working channel to introduce catheters and operative devices. Endoscopes may be flexible or rigid, using plastic or metallic (e.g. stainless steel) outer sheaths; some include a video camera to display images from the tip of the endoscope. Most endoscopes are specialized for the area where they operate and/or the procedure to be performed; they are named accordingly.
There are 3 types of search. Please only use one option at a time.
1) Build a boolean search string.
Ensure that document matches include...
2) Search for a phrase:
3) Search on part of a word:
Information on how to use Search
There are 2 types of basic queries: Terms and Phrases.
A Term is a single word search.
A Phrase would wrap a string of words in quotes and find matches on the extact string.
Boolean Operators You can combine basic queries with Boolean operators to form a more complex query. Boolean operators define the relationships between Terms or Phrases. Our search supports the following Boolean operators: AND, "+", OR, NOT and "-". Please note that Boolean operators must be all uppercase.
AND example search: default AND document
This is the default operator. It will be used if there is no Boolean operator between two terms. For example:
default document is the same as default AND document. In this case both terms need to exist within a listing to find a match on that listing.The + character is synonymous with using AND.
OR example search: default OR document
In this case just one of the terms needs to exist within a listing to find a match on that listing.
NOT example search: default NOT "document type"
The NOT operator excludes documents that contain the term (or phrase) after NOT. So a listing match would have to include the word default but not the phrase "document type". The - character is synonymous with using NOT.
Wildcard/Prefix queries You can perform "wildcard" or "prefix" queries using the '*' operator. Whereas all of the previous search found exact matches on the whole term or phrase, a wildcard search will find partial matches.
example search: ehr*
This query will match all documents containing words beginning with the prefix 'ehr' like the word Ehrlichia.