Automatic surgical sponge counter and blood loss determination system

• US 20040031626A1
• Filed: 04/11/2003
• Published: 02/19/2004
• Est. Priority Date: 08/05/1994
• Status: Active Grant

• Current Assignee: Stryker Corporation
• Original Assignee: Clearcount Medical Solutions Incorporated (Stryker Corporation)
• Inventors: Morris, Dean E., Morris, Sharon L.
• Granted Patent: US 6,998,541 B2
• Time in Patent Office: Days
• US Class Current: 177/25.17
• CPC Class Codes: A61B 2050/0018 Electric heating
• CPC Class Codes: A61B 2050/375 for sponges
• CPC Class Codes: A61B 2090/0805 automatically, e.g. by means of magnetic, optical or photoelectric detectors
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61B 2217/007 with irrigation system
• CPC Class Codes: A61B 50/37 for absorbent articles, e.g. bandages, garments, swabs or towels
• CPC Class Codes: A61B 90/98 using electromagnetic means, e.g. transponders
• CPC Class Codes: A61M 1/777 Determination of loss or gain of body fluids due to suction-irrigation, e.g. during surgery
• CPC Class Codes: G01G 17/04 for weighing fluids, e.g. gases, pastes
• CPC Class Codes: G01G 19/414 using electronic computing means only
• CPC Class Codes: G06M 1/108 by electronic means
• CPC Class Codes: G06M 7/00 Counting of objects carried by a conveyor

Abstract

A surgical sponge detection system includes a plurality of surgical sponges (2) having radio frequency identification tags (1) securely attached thereto and a non-optical hand-held reader (40) for detecting the sponges by detecting the tags (1). Also disclosed is a device (30) for automatically counting, weighing, and calculating blood loss contained within, soiled surgical sponges (2) which includes a cabinet with an opening (3) at the top through which sponges (2) are deposited, a reader (6) which scans each sponge (2) entered and determines sponge type from a tag (1) affixed to each sponge (2), and a disposable bag (8) into which the sponges (2) are deposited. The disposable bag (8) is removably mounted to a weighing scale (10); there is also a rear door (9) from which the disposable bag (8) can be easily removed, a rechargeable battery (11), a shelf (12) for unused disposable bag storage, a control unit (4) which processes data received from reader (6) and scale (10) and instantaneously calculates total weight of liquid contained within sponges entered, a display panel (5) continuously displays the number and type of sponges entered during a given procedure as well as the total weight of liquids retained in those sponges. There is a means for automatically determining the weight of the sponges when dry which includes a non-optical scanner means (6) which can read an indicating means (1) on the sponges (2) even when the indicating means (1) is covered with blood or other body fluids.

Claims

1. A sponge bucket apparatus for receiving and automatically counting used surgical sponges of different size and shapes, each sponge having an indicating means thereon for identifying the sponge, the apparatus comprising:

a) a bucket container body having an interior for containing used surgical sponges, the container having an upper end with a single opening through which used surgical sponges enter the container, a lower end with a base and a side wall;

b) a non-optical scanner positioned next to the opening for detecting a surgical sponge entering the container through the opening;

c) a display on the container body for displaying the number of sponges which have entered the container through the opening since a predetermined time;

d) wherein the scanner automatically determines the type of sponge which enters the container body through the opening, even if sponges of different sizes and shapes pass through the opening in sequence; and

e) the first display having indicia that indicates the number of each different type of sponge which has entered the container body through the single opening in a predetermined time frame.

2. The apparatus of claim 1, wherein the non-optical scanner can detect multiple sponges deposited simultaneously through the single opening.

3. The apparatus of claim 1, wherein the non-optical scanner can detect a sponge, even when the scanner is covered with blood or other body fluids.

4. The apparatus of claim 1, further comprising a disposable bag that lines the container interior below the opening and an access panel for allowing access to the disposable bag enabling removal of the disposable bag.

5. The apparatus of claim 1, further comprising a first alarm that indicates when a predetermined number of sponges is contained in the container.

27. The apparatus of claim 1, wherein the indicating means is an RF tag encoded with a number selected from within a range of 0 to 64 bits, binary.

30. The apparatus of claim 1, wherein the scanner detects each sponge electromagnetically.

6. A surgical sponge bucket, comprising:

a) a bucket container having an interior;

b) a plurality of sponges of varying weights, each sponge having an indicator thereon for identifying the sponge;

c) a device for counting the surgical sponges, that includes a single opening in the upper end portion of the container for receiving the surgical sponges;

d) a scanner that detects when one of the surgical sponges passes through the opening;

e) a counter that counts the number of surgical sponges that have entered the container in a predetermined time frame; and

f) a display that displays the number of surgical sponges that have entered the container in a predetermined time frame;

g) wherein different types of surgical sponges are received by the container; and

h) wherein the scanner is capable of distinguishing between multiple types of surgical sponges that pass through the single opening, even those sponges of different types but similar weights, and the display means displays the number of each type of sponge which is received.

7. The sponge bucket of claim 6, wherein the scanner is a non-optical scanner means.

8. The system of claim 7, wherein the scanner reads an indicating tag on the sponges even when the indicating tag is covered with blood or other body fluids.

9. The apparatus of claim 7, wherein the non-optical scanner can read multiple sponges that are deposited through the single opening simultaneously.

28. The apparatus of claim 6, wherein the indicator is an RF tag encoded with a number selected from within a range of 0 to 64 bits, binary.

31. The apparatus of claim 6, wherein the scanner detects each sponge electromagnetically.

10. A surgical sponge apparatus comprising:

a) a surgical sponge made of an absorbent material for absorbing fluids during surgery and having a dry weight before being used to absorb fluids; and

b) an indicating tag on the sponge body that indicates the type of sponge on which it is located, the indicating tag being readable by a non-optical scanner.

11. The apparatus of claim 10, wherein the indicating tag indicates the dry weight of the sponge.

12. The apparatus of claim 10, wherein the indicating tag comprises a RF tag attached to the sponge.

13. The apparatus of claim 12, wherein the RF tag does not exceed one inch in diameter and 0.20 inches in thickness.

14. The apparatus of claim 12, wherein the RF tag does not exceed four grams in weight.

15. The apparatus of claim 12, further comprising a scanner for reading the tag.

16. The apparatus of claim 15, wherein the scanner can read multiple tags simultaneously.

17. The apparatus of claim 15, wherein the scanner can read and identify multiple tags simultaneously.

29. The apparatus of claim 10, wherein the indicating tag is an RF tag encoded with a number selected from within a range of 0 to 64 bits, binary.

32. The apparatus of claim 10, wherein the scanner detects each sponge electromagnetically.

18. A surgical sponge apparatus, comprising:

a) a sponge body of an absorbent material for absorbing fluids during surgery;

b) an RF tag attached to the sponge that enables the sponge to be detected by a non-optical scanner; and

c) the RF tag including information encoded on the tag about the sponge.

19. The apparatus of claim 18, wherein the RF tag does not exceed one inch in diameter and 0.20 inches in thickness.

20. The apparatus of claim 18, wherein the RF tag does not exceed four grams in weight.

21. The apparatus of claim 18, wherein the RF tag does not exceed three grams in weight.

22. The apparatus of claim 18, further comprising a scanner for reading the tag.

23. The apparatus of claim 22, wherein the scanner can read multiple tags simultaneously.

24. The apparatus of claim 22, wherein the scanner can read and identify multiple tags simultaneously.

25. The apparatus of claim 18, further comprising a handheld scanner for reading the tag.

26. The apparatus of claim 18, wherein the RF tag is encoded with a number selected from within a range of 0 to 64 bits, binary.

33. The apparatus of claim 18, wherein the scanner detects each sponge electromagnetically.

34. The inventions substantially as shown and/or described herein.