Computerized search system for medication and other items

• US 7,779,003 B2
• Filed: 07/17/2007
• Issued: 08/17/2010
• Est. Priority Date: 07/17/2006
• Status: Active Grant

• Current Assignee: Cerner Innovation, Inc. (Oracle Corporation)
• Original Assignee: Siemens Medical Solutions USA Incorporated (Siemens AG)
• Inventors: McKnight, Lawrence
• Primary Examiner(s): Trujillo; James
• Assistant Examiner(s): Black; Linh
• Application Number:
  US11/778,983
• Publication Number:
  US 20080016042A1
• Time in Patent Office: 1,127 Days
• Field of Search: 707/3, 707/728, 707/731
• US Class Current: 707/728
• CPC Class Codes: G06Q 10/087 Inventory or stock management, e.g. order filling, procurement or balancing against orders
• CPC Class Codes: G16H 20/10 relating to drugs or medications, e.g. for ensuring correct administration to patients
• CPC Class Codes: G16H 70/40 relating to drugs, e.g. their side effects or intended usage

Abstract

A search system finds an order to provide an item. The search system includes a repository including a plurality of records identifying a corresponding plurality of items for order. A record of an individual item for order includes a plurality of related text terms describing order related parameters. A search processor searches the plurality of records to find candidate items for order corresponding to a user entered search term by: identifying and prioritizing candidate items for order in response to a relative frequency of occurrence of the user entered search term in corresponding records of the candidate items for order; and ranking the identified and prioritized candidate items for order in response to a relative frequency of ordering of the identified and prioritized candidate items for use by users. An output processor provides search result data representing the ranked, identified and prioritized candidate items.

Claims

1. In a health care enterprise, a computerized provider order entry system for receiving one or more search terms from a health care provider and finding an order for providing a medication or medical service related to the one or more search terms, comprising:

a repository including a plurality of records identifying a corresponding plurality of medications or medical services available for order, a record of an individual medication or medical service available for order including a plurality of related text terms describing order related parameters, including terms identifying a treatment and at least one of;

(a) a diagnosis code associated with the medication or medical service available for order, (b) a medical condition associated with the medication or medical service available for order, and (c) a medical problem associated with the medication or medical service available for order;

a search processor for searching said plurality of records to find candidate medications or medical services available for order corresponding to the one or more health care provider entered search terms by;

determining a relative frequency of occurrence of respective ones of the one or more search terms in the related text terms of corresponding records of candidate medications or medical services available for order;

summing data representing the relative frequency of occurrence of the respective ones of the one or more search terms to provide data representing a summed relative frequency of the one or more search terms in corresponding records of candidate medications or medical services available for order;

identifying and prioritizing candidate medications or medical services available for order in response to the summed relative frequency of occurrence of said health care provider entered search terms in corresponding records of said candidate medications or medical services available for order; and

ranking said identified and prioritized candidate medications or medical services available for order in response to a relative frequency of ordering of said identified and prioritized candidate medications or medical services available for use by health care providers;

wherein said search processor alters search result ranking based on voting mechanisms for said medications or medical services available for order, said voting achieved by at least one of (a) selection of an item for order in normal use and (b) manual adjustment of priority weighting of that item for order; and

an output processor for providing search result data representing said ranked, identified and prioritized candidate medications or medical services.

2. A system according to claim 1, wherein said search processor weights said summed data relative to said data representing said relative frequency of ordering of said identified and prioritized candidate medications or medical services for order, to provide data indicating ranking of said ranked, identified and prioritized candidate medications or medical services.

3. A system according to claim 1, wherein said orders are orders for providing particular medical treatments for a patient and said order related parameters identify at least one of, (a) quantity, (b) a route of administration of a medical treatment, (c) a frequency of administering a treatment and (d) a form of medical treatment.

4. A system according to claim 3, wherein said form of medical treatment comprises at least one of, (a) a package type, (b) a strength of a medical treatment and (c) a concentration of a medical treatment.

5. A system according to claim 1, wherein said orders are orders for providing particular medical treatments for a patient and said order related parameters identify at least one of, (a) order urgency and (b) associated order instructions.

6. A system according to claim 1, wherein said search processor identifies and prioritizes individual candidate medications or medical services available for order proportional to a number of occurrences of said user entered search term relative to a total number of terms in a corresponding record of an individual candidate item for order.

7. A system according to claim 6, wherein said search processor identifies and prioritizes individual candidate medications or medical services available for order using:

$\begin{array}{c}\mathrm{tf}=\frac{n_i}{\underset{k}{\sum <br><br>}<br><br>\left(n_k\right)}\\ \mathrm{Tf}*\mathrm{idf}=\mathrm{tf}·<br><br>\log <br><br>\left(\frac{<br><br>D<br><br>}{<br><br>d_j\supset <br><br>t_i<br><br>}\right)\end{array}$

where;

tf=the term frequency

n_l=the number of occurrences of the term in a search string

Σ

(n_k)=the number of terms in a search string

|D|=number of orderable medications or medical services

|(d_j⊃

t_l)|=number of orderable item records in which term appears

Tf*idf=the weight or importance of the term.

8. A system according to claim 1, further comprising:

a repository of mapping information associating an individual term with a plurality of corresponding synonyms;

wherein

said search processor parses said healthcare provider entered search terms and, if a search term in the one or more search terms is in the repository of mapping information, expands said healthcare provider entered search term to a corresponding plurality of search terms using said mapping information.

9. A system according to claim 1, further comprising at least one repository of term substitution information comprising:

first mapping information associating a term string comprising a plurality of terms with a corresponding single term; and

second mapping information associating a single term with a corresponding plurality of terms;

wherein;

said search processor parses said healthcare provider entered search terms and substitutes a corresponding single search term for a plurality of said one or more search terms by applying said first mapping information and substituting a plurality of search terms corresponding said single search term by applying said second mapping information.

10. A system according to claim 1, further comprising:

at least one repository of term substitution information comprising mapping information associating a term with a corresponding term; and

said search processor parses a search term in the one or more search terms and substitutes an associated corresponding term for said search term by applying said mapping information.

11. A system according to claim 10, wherein:

said search processor searches for text terms describing order related parameters beginning with the same letters of an associated corresponding term in said search terms.

12. A system according to claim 11, wherein said search processor identifies and prioritizes individual candidate medications or medical services for order proportional to the number of occurrences of said healthcare provider entered search terms relative to a total number of terms in the corresponding record of an individual candidate item for order.

13. A system according to claim 10, wherein said search processor excludes short terms that potentially map to multiple irrelevant terms.

14. A system according to claim 1, further comprising:

a repository of first mapping information associating an individual term with a plurality of corresponding synonyms;

wherein

said search processor parses said one or more healthcare provider entered search terms and expands respective healthcare provider entered search terms to a corresponding plurality of search terms using said mapping information.

15. A system according to claim 14, further comprising

at least one repository of term substitution information comprising:

second mapping information associating a term string comprising a plurality of terms with a corresponding single term and

third mapping information associating a single term with a corresponding plurality of terms;

wherein;

said search processor parses a search term in the one or more healthcare provider entered search terms and substitutes a corresponding plurality of terms for said search term by applying said second mapping information and substitutes a single term for a corresponding plurality of terms by applying said third mapping information.