JP2005160825A - Surgical gauze to which contactless ic chip is attached, and managing apparatus therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a surgical gauze to which a contactless IC chip is attached and a managing apparatus therefor. <P>SOLUTION: The managing apparatus is equipped with a radio transmitting and receiving device 18 which transmits radio waves to a gauze mass 11 in a gauze container 10 placed in a prescribed area and receives inherent signals of the biased contactless IC chip to measure the number of pieces of the used surgical gauzes 1 with interwoven threads to which the contactless IC chips are attached, a gauze counting part 19 for counting the number of the pieces of the gauzes from the number of received inherent signals of the contactless IC chip, a measurement part 9 for measuring the total weight of the gauze mass and the gauze container, an arithmetic part which subtracts the total weight of the recovered gauze before use obtained by multiplying a standard weight of one piece of the gauze before use by the counted number of pieces of the gauze and an empty weight of the gauze container from the measured total weight and determines the amount of absorbed blood in the recovered gauze, and a displaying part for displaying the number of pieces of the gauze, the measured total weight, and the arithmetic result. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to management of surgical gauze in a hospital operating room or the like, and an apparatus for calculating the amount of bleeding during surgery from the weight of used gauze.

  In the hospital operating room, count the number of pre-use gauze and used gauze for gauze to be used during surgery so that gauze does not enter and remain in the surgical field and that there is no missing gauze. Perform gauze count. Furthermore, in order to know the amount of bleeding over time from the amount of blood adhering to the gauze, it is necessary to measure and calculate the amount of adhering blood. Such a gauze during surgery is generally managed by a nurse, but there is a need for a method that can be carried out easily and accurately in a complicated time zone.

  Normally, if there is even one piece of gauze of unknown location, you have to search for it around you, the pockets of your other operating clothes, the trash can, etc. And if it cannot be detected by any means, in order to confirm that a medical error of leaving gauze in the patient's body has occurred, a gauze woven with an X-ray contrast thread has been used conventionally, and an X-ray examination is performed after surgery. The method of doing is taken (for example, refer patent document 1).

  However, in this method, it is necessary to provide an X-ray projection device, and there is a danger due to X-ray exposure, and it takes several tens of minutes and labor from calling an X-ray engineer to developing it, There is a problem that it imposes a great burden on the patient who is in an unstable state immediately after the operation and also on the operation team. Furthermore, if residual gauze in the body is found during this test, it must be removed again by surgery.

  In addition, in order to accurately grasp the amount of bleeding from the surgical field by gauze count during surgery, the gauze is made to be a certain size according to the type of surgery, and the number of gauze used with a constant weight before use. Quantify the amount of blood adhering to and absorbed from the gauze from the total weight, and adding the amount of blood in the suction bottle aspirated from the suction tube in the operative field and the estimated blood volume remaining in the operative field Is the amount of bleeding at that time.

  From this point of view, an apparatus has been developed that simultaneously performs optical counting and weighing of used gauze to measure the total blood volume absorbed by the gauze (see Non-Patent Document 1, for example). In order to optically count gauze with this device, it is necessary to peel off each gauze containing blood accurately with forceps and tweezers one by one and put them one by one into the counting entrance. Optical counting and weight measurement are only performed after a cumbersome, filthy and inaccurate operation.

  Therefore, in order to perform counting and weighing of the used gauze without performing a troublesome peeling operation, a magnetic material is woven in advance in the surgical gauze, and this is arranged vertically even if a plurality is formed in a lump after use. The gauze count is performed by detecting the induced voltage change of the detection coil due to the passage of the magnetic material woven into them while peeling off each gauze in the process of dropping into the detection coil array and hitting the baffle plate attached to the coil array A surgical gauze and its use management device have also been proposed (see, for example, Patent Document 2).

However, in the magnetic material counting method as described above, since gauze peeling is left to the input / dropping of the detection coil array, even if it hits a baffle plate, there is a risk of erroneous separation due to incomplete separation, or erroneous detection due to some magnetic noise. In general, it has not been put into practical use.
JP 2003-159271 A JP-A-6-38980 April 2002, product catalog issued by Izumi Medical Medical Co., Ltd. “Melagase bleeding measurement device OBM-2”

  The present invention solves the problems of conventional gauze management as described above, performs more accurate gauze counting and blood loss measurement with a simple operation, and searches for and identifies missing used gauze. It is intended to provide a gauze that can be used and a device for managing the use thereof.

  In order to solve the above problems, the present invention firstly constitutes a surgical gauze having a woven yarn with a non-contact IC chip attached thereto.

  The present invention is also characterized in that the woven yarn with the non-contact IC chip is made of an X-ray contrast yarn.

  The present invention also provides a surgical gauze management apparatus provided with a wireless transceiver that wirelessly receives a specific signal of a biased non-contact IC chip by sending a radio wave to the surgical gauze having a woven yarn with a non-contact IC chip attached thereto. Is configured.

  The present invention also sends a radio wave to the surgical gauze collected and arranged in a predetermined area and energized in order to measure the number of surgical gauze having a weaving thread fitted with a non-contact IC chip. The surgical gauze management apparatus includes a wireless transceiver that wirelessly receives a unique signal of a non-contact IC chip and a gauze count unit that counts the number of unique signals of the received non-contact IC chip.

  The present invention is also characterized in that the radio transceiver has a transmitting / receiving end portion of radio waves having directivity, and the gauze management device further moves at least the transmitting / receiving end portion spatially, and scans by the transmitted radio waves. It is characterized by having a structure that expands the entire area of the predetermined area.

  According to the present invention, the surgical gauze management apparatus further measures a total weight of the gauze container in a recovery gauze supporting state, and a gauze container for collecting and arranging the surgical gauze in the predetermined region. The total weight before collection and the empty weight of the gauze container obtained by multiplying the standard weight of one piece of gauze before use by the count number were subtracted from the total weight of the measuring unit and the measured total weight. A calculation unit for determining the amount of blood absorbed by the gauze and a display unit for displaying the number of gauze sheets, the measured total weight, and a calculation result by the calculation unit are provided.

  The present invention also transmits an exploration radio wave to a predetermined spatial range and searches for a specific signal from the non-contact IC chip that has received the radio wave in order to search for a surgical gauze having a woven yarn with a non-contact IC chip attached thereto. The surgical gauze search device is configured to locate the surgical gauze that is missing in the direction of movement of the device where the reception intensity of the unique signal is high.

  In the present invention, as a non-contact IC chip to be attached to a weaving thread of a surgical gauze, an ultra-small IC chip that has been recently developed and is available on the market (for example, 0.3 mm square and thinner) Use. This size is about the same as fine sand, and it does not give any sense of incongruity to the gauze weaving yarn or to embed it, nor does it give physical wrinkles to the operative field. In particular, as a mode of chip mounting, a resin coating layer may be formed on one gauze weaving yarn, and an IC chip may be embedded in this layer. In this case, there is almost no physical discomfort due to the resin coating, and the risk that the IC chip is detached from the gauze is completely eliminated.

  Such an ultra-small non-contact IC chip also has the ability to obtain energy when a predetermined radio wave is received, and wirelessly transmit, for example, a 128-bit unique number. The radio transmitter / receiver of the gauze management device or the search device transmits the chip activating radio wave as described above, receives the number data from the non-contact IC chip that is energized, and receives and recognizes the one signal. Count as one gauze or use it as a clue to whereabouts. Therefore, even if the used gauze is agglomerated to some extent, a number signal is generated for each gauze, so there is no hindrance in counting, and the preparation work for this point gauze count is remarkably reduced.

  FIG. 1 is a partially enlarged schematic view of a surgical gauze. Surgical gauze is formed in different sizes depending on the type of surgery, and a standard gauze having a constant weight per standard product is commercially available. In FIG. 1, a single weaving thread 3 in which a non-contact IC chip is embedded and mounted is provided in the structure of the normal thread 2 of the surgical gauze 1. Reference numeral 4 denotes an IC chip embedded portion in the yarn 3. The weaving yarn 3 is made of a suitable plastic yarn, and an IC chip is embedded in any part thereof. By mixing X-ray-impermeable barium powder into the plastic yarn, the woven yarn 3 can be used as a so-called X-ray contrast yarn.

  Since the surgical gauze having the IC chip mounted thereon as described above is formed of the same weight of gauze material, it has the same weight as the product, and the IC chip itself or by plastic coating. The protective effect can sufficiently withstand the gauze disinfection treatment at the time of use such as surgery.

  FIG. 2 is a perspective view showing an embodiment of the surgical gauze management device of the present invention provided with a gauze count unit. The apparatus includes a casing 6 having a front opening 5, and a scanning reader 8 is provided inside the guide frame 7 surrounding the top surface 6 a of the casing 6 so as to be movable in the front-rear direction as indicated by an arrow. A weight scale 9 is disposed at the bottom. On the upper surface of the weigh scale 9, a container 10 for storing gauze to be weighed is placed. In the gauze container 10, a gauze lump 11 having absorbed blood is accommodated and supported, and weighed together with the container 10. The main body of the casing 6 is formed of an arbitrary rigid material, but the top surface 6a is formed of a non-metallic electromagnetic wave transmitting material and transmits radio waves from a radio transceiver (described later) of the scanning reader 8.

  A calculation unit, which will be described later, is installed at the bottom of the casing 6 below the weight scale 9 to process the gauze count signal by the scanning reader 8 and the weight signal measured by the weight scale 9 so that they can be displayed, and calculate them together. It is supposed to be. These processing results are obtained by displaying the number of gauze indicators 12 arranged on the bottom front wall 17 of the casing 6, the weight indicator 13 of one gauze, the weight indicator 14 of the gauze container, the total weight indicator 15, and the bleeding amount indication. Each of them is displayed on the device 16.

  FIG. 3 is a diagram showing a functional block arrangement of the above-described surgical gauze management device. The scanning reader 8 transmits a radio wave within a predetermined reach and wirelessly receives a unique signal of the non-contact IC chip in the gauze activated by the radio wave, and the received unique signal of the non-contact IC chip. And a gauze count unit 19 for counting and counting the number. The gauze count unit 19 includes a detection circuit 20 that detects a unique signal from the IC chip, a counter 21 that counts the number of signals, that is, the number of gauze sheets, and a number identification circuit 22 that identifies the unique signal.

  As described above with reference to FIG. 2, the scanning reader 8 moves on the top surface 6 a of the device, thereby scanning the entire bottom surface (the top surface of the weighing scale 9 or the gauze container 10 supported on the top surface) in the space inside the device. However, even if this moving part is only the wireless transmitter / receiver 18 or, in some cases, only the transmitting / receiving end part and the remaining part is fixed to the back part or bottom part of the apparatus, the same radio wave scanning is possible. It is. This scanning movement is automatically performed in the direction of the arrow in FIG. 2 (front-rear direction), but may be performed manually in some cases. Further, the movement may be not a translation but a swinging motion for changing the direction of the radio wave at the transmission / reception end.

  The calculation unit 23 receives the output signals from the gauze count unit 19 and the weighing scale 9 and performs calculation processing and display processing. The gauze count signal input to the calculation unit 23 and the total weight signal from the weigh scale 9 are supplied to the display units 12 and 15 as a gauze number display signal and a total weight display signal, respectively. Further, the weight of one gauze before use and the empty weight of the gauze container 10 pre-stored in the calculation unit 23 (or confirmed by the weighing scale 9) are the gauze single sheet weight display signal and the empty weight display signal, respectively. Is supplied to the display units 13 and 14.

Substantial calculation operation in the calculation unit 23 uses the collected gauze obtained by multiplying the standard weight of one gauze before use by the gauze count number from the total weight measurement value in the used gauze supporting state of the gauze container 10. By subtracting the previous total weight and the empty weight of the gauze container, the absorbed blood volume of the collected gauze (approximate bleeding volume: hereinafter referred to as “bleeding volume”) is determined. That is,
Bleeding amount = total weight value− (weight of one piece of gauze × number of pieces of gauze) −empty weight of the container This amount of bleeding is supplied to the blood volume display unit 16 as a display signal.

  The operation unit 24 connected to the calculation unit 23 is used by a user to set and calibrate scales for various weight measurements, specify calculation operations, reset, and the like, and is installed at an appropriate position of the casing 6. .

  FIG. 4 is a perspective view (A) and a side view (B) of the scanning reader 8 including the wireless transceiver in this embodiment as viewed from below, and the wireless transceiver (18 / FIG. 3) has directivity. A state is shown in which a radio wave transmission / reception end portion 25 is provided and exposed from the lower surface of the scanning reader 8 to the lower device space. The transmission / reception end portion 25 has a pair of radio wave guide pieces 26 and 27 for shielding radio waves extending in the length direction of the scanning reader 8, and has a downward directivity indicated by an arrow 29 from the guide piece interval 28 opened downward. It is possible to perform scanning by moving in the front-rear direction of the apparatus (vertical direction in the drawing) indicated by a double-pointed arrow while preferably transmitting and receiving radio waves in the microwave band.

  FIG. 5 shows a scanning reader 30 for search configured as a surgical gauze search device. Similar to the scanning reader 8 of the first embodiment, the search scanning reader 30 includes a horizontally long main body 31 and a radio transceiver 32 supported on the lower surface of the main body 31. As shown by the arrows 33a to 33e, the exploration radio wave emitted from is transmitted so as to reach a predetermined spatial range at a relatively wide angle.

  On the upper surface of the main body 31 of the scanning reader 30 for search, an IC chip response display unit 34 for displaying that the radio wave transmitting / receiving end has received at least a response radio wave (unique signal) from the non-contact IC chip and the received intensity thereof. Have. A grip 35 projects from the back surface of the main body 31, and an operation screen 36 is installed on the top surface of the grip 35. A cable 37 including a power bus and a signal output line is connected from the rear end of the grip 35.

  FIG. 6 is a diagram showing a functional block configuration of the search scanning reader 30. In the main body 31, a detection circuit 38 for detecting a response radio wave from the IC chip and a number identification circuit 39 for identifying a specific signal of the response radio wave. Is equipped.

  Thus, when the user of the scanning reader 30 for search receives the response radio wave from the non-contact IC chip, the scanning reader 30 approaches the transmission source in the direction in which the reception intensity increases, The location of the surgical gauze that has become can be determined.

  Since the surgical gauze in the above embodiment is a non-contact IC chip mounted with an X-ray contrast thread, if the missing used gauze cannot be detected even by the scanning scanner 30 for search, It can also be used to search for gauze by X-ray fluoroscopy later in the patient's body, thereby ensuring complete management of gauze.

  Since the gauze management device of the present invention is configured as described above, the number of used gauze can be easily and accurately confirmed in the operating room even in a lump. The amount of blood adhering to the gauze is accurately calculated and displayed on the spot based on the total number of gauze counted and the total weight of the container containing the used gauze. Surveillance and safety of surgery can be achieved.

  Moreover, according to the scanning reader which comprises a gauze search apparatus, the search of the gauze from which the location became unknown can be made easy, and the medical mistake which makes this remain in a body can be prevented. Furthermore, both the gauze management device and the gauze search device have a number identification circuit for identifying a unique signal generated by an IC chip in a specific gauze, so that the use order of these gauze in the surgical unit and purchase It can also be used for the previous identification, and is expected to be extremely useful in the medical field.

2 is a partially enlarged schematic view of a surgical gauze. It is a perspective view which shows the Example of the surgical gauze management apparatus of this invention provided with the gauze count part. It is a diagram which shows the functional block arrangement | sequence of the surgical gauze management apparatus shown in FIG. It is the perspective view (A) and side view (B) which looked at the scanning reader | leader containing a radio | wireless transmitter / receiver from the downward direction in the said Example. It is a perspective view which shows the scanning reader | leader 30 for a search comprised as a surgical gauze search apparatus. 2 is a diagram showing a functional block configuration of a search scanning reader 30. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Surgical gauze 2 Normal thread 3 Weaving thread 4 IC chip embedding part 5 Front opening 6 Casing 7 Guide frame 8 Scanning reader 9 Weight meter 10 Gauze container 11 Gauze lump 12 Gauze number display 13 Gauze single weight display 14 Gauze container Weight indicator 15 Total weight indicator 16 Bleeding amount indicator 18 Radio transmitter / receiver 19 Gauze count unit 20 Detection circuit 21 Counter 22 Number identification circuit 23 Calculation unit 24 Operation unit 25 Transmitting / receiving end unit 26, 27 Radio wave guide piece 30 Search scanning Reader 32 Wireless transceiver 34 IC chip response display unit 36 Operation screen 37 Cable 38 Detection circuit 39 Number identification circuit

Claims (7)

  A surgical gauze having a weaving thread fitted with a non-contact IC chip.   The surgical gauze according to claim 1, wherein the weaving yarn on which the non-contact IC chip is mounted is an X-ray contrast yarn.   A surgical gauze management device comprising a combination of a surgical gauze having a non-contact IC chip mounted thereon, means for transmitting radio waves to the surgical gauze, and means for wirelessly receiving a specific signal of an energized non-contact IC chip.   A container for accommodating a surgical gauze having a weaving thread equipped with a non-contact IC chip, a radio transceiver for sending radio waves to the gauze in the container and wirelessly receiving a specific signal of the energized non-contact IC chip; A surgical gauze management apparatus, comprising: a gauze count unit that counts the number of gauze sheets from the number of received unique signals of the non-contact IC chip.   5. The wireless transmitter / receiver includes a transmitting / receiving end portion of radio waves having directivity, and means for spatially moving the transmitting / receiving end portion with respect to a gauze accommodated therein. Surgical gauze management device.   A weighing unit for measuring the total weight of the gauze container, and a total weight before use of the recovered gauze obtained by multiplying the standard weight of one gauze before use by the count number from the measured total weight; A calculation unit for subtracting the empty weight of the gauze container and determining the amount of blood absorbed by the collected gauze, and a display unit for displaying the number of gauze, the total measured weight, and the calculation result by the calculation unit are provided. The surgical gauze management device according to claim 4 or 5, characterized in that   In order to search for a surgical gauze having a weaving thread equipped with a non-contact IC chip, wireless transmission / reception that transmits an exploration radio wave to a predetermined spatial range and receives a specific signal from the non-contact IC chip that has received the radio wave Surgical gauze search device configured to locate a surgical gauze that has been missing in the direction of movement of the device in which the reception strength of the unique signal is high.

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