KR102117370B1 - Apparatus for tracking position of catheter tip and method thereof - Google Patents

Abstract

A catheter tip positioning device and method are provided. A catheter tip position tracking device according to an embodiment of the present invention includes a signal control unit that generates an Ultra Wide Band (UWB) impulse signal and converts the received signal into a digital signal; A guide wire connected to the signal control unit and transmitting a UWB signal; A transmitting antenna connected to the guide wire tip in the catheter and radiating a UWB signal externally; A receiving antenna for receiving UWB signals emitted from the transmitting antenna; And a calculation unit that calculates a relative distance between the catheter tip and the receiving antenna through cross correlation between the radiated UWB signal and the received UWB signal.

Description

Apparatus for tracking position of catheter tip and method thereof

The present invention relates to the catheter tip position tracking, in particular, by using the UWB (Ultra Wide Band) Impulse (Umpulse) signal to calculate the relative distance between the catheter tip and the receiving antenna is inserted into the human body to track the position of the catheter tip It relates to a catheter tip position tracking device and method.

In general, Peripherally Inserted Central Catheters (PICC) are catheters that are inserted into veins through peripheral blood vessels, which require a vein to be secured in poor vascular conditions, and require long-term hospitalization for diabetic and cancer patients who require blood transfusion and regular blood collection. When patients and elderly patients receive fluid injections, it is used for central venous vein surgery that lasts more than 6 months with only one procedure.

The peripheral vascular insertion catheter must be inserted through the vein to the heart for blood transfusion or blood collection, so the catheter end position must be confirmed during the catheter insertion process.

As described above, various methods for positioning the catheter have been attempted, but there is a need for a method that is provided at a low cost while guaranteeing the accuracy of positioning and preventing stability from adversely affecting the patient.

KR 2016-002088 A

In order to solve the problems of the prior art as described above, an embodiment of the present invention is a catheter tip location tracking device and method that can accurately and in real time track the location of the catheter and prevent the risk of exposure to a patient while being implemented at low cost. Want to provide

According to an aspect of the present invention for solving the above problems, a signal control unit for generating an Ultra Wide Band (UWB) impulse signal and converting the received signal into a digital signal; A guide wire connected to the signal control unit and transmitting the UWB signal; A transmitting antenna connected to a guide wire tip in the catheter and radiating the UWB signal externally; A receiving antenna for receiving the UWB signal emitted from the transmitting antenna; And a calculation unit calculating a relative distance between the catheter tip and the receiving antenna through cross correlation between the radiated UWB signal and the received UWB signal.

In one embodiment, the operation unit, a standard signal generating unit for generating a standard signal normalized to the emitted UWB signal; A cross-correlation calculating unit calculating cross-correlation between the standard signal and the received UWB signal; A maximum value calculator configured to calculate a maximum value as a result of the cross-correlation calculation; An inverse operation unit for inversely calculating the calculated maximum value; And a distance calculator configured to calculate a relative distance between the catheter tip and the receiving antenna based on the calculated reciprocal.

In one embodiment, the distance calculator may calculate the relative distance by multiplying the calculated inverse by a scaling factor.

In one embodiment, the catheter tip location tracking device may further include a pre-processor for removing noise from the received UWB signal.

In one embodiment, the catheter tip position tracking device may further include a pre-processor for performing at least one of an absolute value operation, a Hilbert operation, a square operation, and a combination operation of the operation from the received UWB signal.

In one embodiment, the transmitting antenna may be provided on a plurality of catheter tips, and the receiving antenna may be provided in a plurality in correspondence to the transmitting antenna.

In one embodiment, the guide wire may be formed in the form of a shield cable.

In one embodiment, the transmission antenna may be a conductive wire that is not shielded at the end of the guide wire.

In one embodiment, the transmission antenna may be provided with an antenna pattern in the unshielded area.

In one embodiment, the receiving antenna may be formed of a dot, line array, or surface array.

In one embodiment, the catheter tip position tracking device may further include a display unit for displaying the calculated relative distance in real time.

According to another aspect of the invention, generating a UWB (Ultra Wide Band) impulse (Impluse) signal; Externally radiating the UWB signal through a transmission antenna provided at a tip of a peripheral vascular intravenous catheter (PICC) and connected to a guide wire within the catheter; Receiving a UWB signal emitted from the transmitting antenna through a receiving antenna; And calculating a relative distance between the catheter tip and the receiving antenna through cross correlation of the radiated UWB signal and the received UWB signal.

In one embodiment, calculating the relative distance comprises: calculating a cross-correlation between the standard signal normalized to the radiated UWB signal and the received UWB signal; Calculating a maximum value as a result of the cross-correlation calculation; Reciprocally calculating the calculated maximum value; And calculating a relative distance between the catheter tip and the receiving antenna based on the calculated reciprocal.

In one embodiment, the step of calculating the relative distance may calculate the relative distance by multiplying the calculated inverse by a scaling factor.

In one embodiment, the catheter tip location tracking method may further include a pre-processing step of removing noise from the received UWB signal.

In one embodiment, the catheter tip location tracking method may further include a pre-processing step of performing at least one of an absolute value operation, a Hilbert operation, a square operation, and a combination operation of the operation from the received UWB signal.

In one embodiment, the catheter tip location tracking method may further include displaying the calculated relative distance in real time.

The catheter tip position tracking device and method according to an embodiment of the present invention use a UWB signal to track the position of the catheter tip, thereby preventing the risk of exposure to the patient and improving the positional accuracy, while at the same time lowering the position of the catheter tip Can easily grasp.

In addition, the present invention is implemented by a relatively simple configuration in the RF method, so there is no need to provide additional equipment, and it does not require user's proficiency, so it is possible to improve ease of use.

1 is a schematic view showing a catheter tip position tracking device according to an embodiment of the present invention,
Figure 2 is a block diagram schematically showing a catheter tip position tracking device according to an embodiment of the present invention,
3 is a view showing an example of a radiation signal and a reception signal in FIG. 1,
4 is a perspective view showing an example of a transmission antenna in FIG. 2,
5 is a perspective view showing an example of a receiving antenna in FIG. 2,
6 is a block diagram showing the detailed configuration of the operation unit in FIG. 2,
7 is a screen showing an example of a display unit in FIG. 2,
8 is a flow chart of a catheter tip location tracking method according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains can easily practice. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. In the drawings, parts not related to the description are omitted in order to clearly describe the present invention, and the same reference numerals are attached to the same or similar elements throughout the specification.

Hereinafter, with reference to the drawings, catheter tip position tracking according to an embodiment of the present invention The device will be described in more detail. 1 is a block diagram schematically showing a catheter tip position tracking device according to an embodiment of the present invention, FIG. 2 is a block diagram schematically showing a catheter tip position tracking device according to an embodiment of the present invention, and FIG. 3 is FIG. 1 A diagram showing an example of a radiation signal and a reception signal.

1 and 2, the catheter tip position tracking device 100 according to an embodiment of the present invention includes a signal control unit 110 and a calculation unit 130.

The catheter tip position tracking device 100 is provided in a peripheral vascular vein insertion catheter that is inserted from the insertion position (Ep) to the heart 12 through the vein 11 to track the distal end of the catheter, and transmit antenna ( 112) is provided at the end of the catheter to emit the UWB signal through the guide wire 102 inserted into the catheter, the receiving antenna 122 can receive the emitted UWB signal.

Here, as shown in FIG. 3, when the UWB signal is radiated in a single impulse form, the received UWB signal is time delayed and attenuated while penetrating the heart 12 or bones of the human body existing in the propagation path. It has two signal types.

At this time, the catheter tip location tracking device 100 may track the catheter tip location using the cross-correlation of the emitted UWB signal and the received UWB signal.

As such, the catheter tip location tracking device 100 can provide a low cost by simple configuration by emitting and detecting a pulse of the UWB signal.

In addition, since the catheter tip position tracking device 100 has a very short wavelength of the UWB signal, the position resolution in position tracking is high, so it is possible to improve precision and improve the detection speed by using a high-frequency signal. have.

Moreover, since the catheter tip position tracking device 100 uses an RF signal, the risk of exposure is very low compared to X-ray or ultrasound, thereby improving stability for patients and operators.

In addition, the catheter tip position tracking device 100 has a transmitting antenna 112 at the end of the catheter and detects a signal through the receiving antenna 122 from the outside, so it can be used by an unskilled operator, and additional equipment It is not necessary to improve the usability.

The signal controller 110 may generate a UWB signal. Here, the UWB signal is an RF signal of several GHz band. The signal controller 110 may generate the UWB signal as an impulse signal according to a predetermined period. At this time, the signal control unit 110 may generate an impulse with a sufficient period that a UWB signal having a size equal to or greater than a predetermined value can be received with respect to the emitted UWB signal.

The signal control unit 110 may be connected to the transmission antenna 112 through the guide wire 102.

Here, the guide wire 102 may be formed in the form of a shield cable. For example, the guide wire 102 may be formed of a conductive material connected to ground so as to have an electronic shielding function on the outside, centered on a transmission line made of a conductive material.

At this time, the signal control unit 110 is a transmission port 114 for connecting the guide wire 102, a connection port for connecting a shield cable may be provided.

The transmitting antenna 112 is provided at the tip of the peripheral blood vessel vein insertion catheter (PICC) and is connected to the guide wire 102 in the catheter to emit UWB signals externally.

4 is a perspective view showing an example of a transmission antenna in FIG. 2.

Referring to FIG. 4, the transmission antenna 112 may include a shielded area 112a and an unshielded area 112b at the end of the guide wire 102.

Here, the transmission antenna 112 may be provided with a plurality of antenna patterns in the unshielded area 112b. For example, the antenna pattern may be provided in a plurality of turns along the outer circumferential surface of the conductive wire. Accordingly, the transmission antenna 112 can improve the radiation efficiency of the UWB signal.

Optionally, the transmitting antenna 112 is not provided separately and may be provided as one end of the guide wire 102. That is, the transmission antenna 112 may be a conductive wire that is not shielded at the end of the guide wire 102.

Here, the guide wire 102 may be used as a transmission antenna by removing the shield covering from a part of the midrange. As a result, since the signal can be radiated in the middle of the guide wire 102 like a transmitting antenna, the intermediate position of the guide wire 102 can also be confirmed using the receiving antenna 122.

The transmitting antenna 112 may be formed in a straight or curved shape so that the guide wire 102 can be easily inserted through the vein 11.

Meanwhile, the transmission antenna 112 may be provided on a plurality of catheter tips. At this time, a plurality of receiving antennas 122 may be provided corresponding to the transmitting antenna 112.

Also, the signal controller 110 may receive the UWB signal emitted from the transmitting antenna 112 through the receiving antenna 122 and convert the received signal into a digital signal.

In addition, the signal control unit 110 may be connected to the reception antenna 122 by a shield cable similar to the guide wire 102.

The signal control unit 110 is a receiving port 124 for connecting to the receiving antenna 122, a connection port for connecting a shield cable may be provided.

5 is a perspective view showing an example of a receiving antenna in FIG. 2.

The receiving antenna 122 may be provided with a conductive pattern 122b on the non-conductive sheet 122a. In FIG. 5, the receiving antenna 122 is illustrated and described as having a helical pattern 122b, but is not limited thereto.

In one example, the receiving antenna 122 may be formed of a dot, line array, or surface array. That is, the reception antenna 122 may be a plurality of antennas arranged in a one-dimensional form of a line or a plurality of antennas arranged in a two-dimensional form of a surface. Such an arrangement structure can improve detection efficiency.

On the other hand, in this embodiment, the transmitting antenna 112 is provided at the tip of the peripheral blood vessel vein insertion catheter (PICC), and the receiving antenna 122 is shown as being disposed on the receiving antenna 122 outside the human body. Although described, it is not limited thereto and may be provided on the contrary. That is, the receiving antenna is provided at the tip of the peripheral vascular insertion catheter (PICC), and the transmitting antenna may be disposed outside the human body.

The calculating unit 130 determines the relative distance between the catheter tip and the receiving antenna 122 through cross correlation of the UWB signal emitted through the transmitting antenna 112 and the UWB signal received through the receiving antenna 122. Can be calculated.

In addition, the operation unit 130 may control the operation of the signal control unit 110 according to a user manipulation through the input unit 150 and display the relative distance calculated through the display unit 140 as described below. .

The operation unit 130 may be implemented as a self-operable microcontroller (MCU), and software according to a catheter tip location tracking method as described below may be executed.

6 is a block diagram showing a detailed configuration of the operation unit in FIG. 2.

The calculating unit 130 may include a pre-processing unit 132, a standard signal generating unit 134, a cross-correlation calculating unit 136, a maximum value calculating unit 137, an inverse calculating unit 138, and a distance calculating unit 139. have.

The pre-processing unit 132 may remove noise from the UWB signal received from the signal control unit 110. The pre-processing unit 132 may be configured as a low pass filter (LPF). In one example, the pre-processing unit 132 may remove noise by subtracting the average value from the received UWB signal, averaging the surrounding signal over time, and the like.

In addition, the pre-processor 132 may transform the signal by performing at least one of an absolute value operation, a Hilbert operation, a square operation, and a combination operation of the above operations from the received UWB signal to increase the efficiency of the relative distance operation. The standard signal generation unit 134 may generate a standard signal normalized to the UWB signal emitted from the signal control unit 110. Here, the standard signal may be a circular signal radiated from the transmitting antenna 112 to the outside. At this time, the standard signal generator 134 may normalize the maximum value of the emitted UWB signal to 1.

Meanwhile, the standard signal generation unit 134 may generate a standard signal using the signal generated by the signal control unit 110.

The standard signal generated by the standard signal generator 134 may be equally applied to the calculation applied by the preprocessor 132.

The cross-correlation calculating unit 136 may calculate the cross-correlation between the standard signal generated by the standard signal generator 134 and the UWB signal received from the signal controller 110.

Here, as described above, the emitted impulse UWB signal is received as a time delay and signal attenuated UWB signal by blood vessels, skin tissue, and organs of the human body. At this time, the closer the distance between the transmitting antenna 112 and the receiving antenna 122, the stronger the signal strength and the smaller the degree of distortion, so that the correlation between the two signals can be calculated by cross-correlation calculation.

The maximum value calculating unit 137 may calculate a maximum value among calculation results by the cross-correlation calculating unit 136. Here, the maximum value of the cross-correlation calculation is a cross-correlation calculation value by a signal transmitted directly from the transmitting antenna 112 to the receiving antenna 122 with the smallest secondary effect such as reflection and diffraction by the human body.

That is, the UWB signal received due to reflection or diffraction by the human body increases the distance from the transmitting antenna 112 to the receiving antenna 122, resulting in weak signal strength and many distortions.

As a result, the maximum value of the cross-correlation calculation may be a value that numerically indicates the intensity and distortion of the UWB signal transmitted directly from the transmitting antenna 112 to the receiving antenna 122.

The inverse operation unit 138 may perform an inverse operation on the maximum value calculated by the maximum value calculation unit 137. Here, since the maximum value of the cross-correlation calculation is inversely proportional to the distance between the transmitting antenna 112 and the receiving antenna 122, the reciprocal calculation unit 138 can be converted into a form proportional to the distance for calculating the relative distance.

The distance calculating unit 139 may calculate a relative distance between the catheter tip and the receiving antenna 122 based on the reciprocal calculated by the reciprocal calculating unit 138.

Here, the distance calculating unit 139 may calculate the relative distance by multiplying the reciprocal calculated by the reciprocal calculation unit 138 for the convenience of the user's understanding of the calculated distance. The scaling factor may be a value for converting the calculation result of the inverse calculation unit 138 into a user-friendly real distance unit, for example, cm unit.

Referring back to FIG. 2, the catheter tip location tracking device 100 according to an embodiment of the present invention may further include a display unit 140 and an input unit 150.

7 is a screen illustrating an example of a display unit in FIG. 2.

The display unit 140 may display the relative distance calculated by the distance calculator 139 in real time.

Referring to FIG. 7, when the receiving antenna 122 is moved back and forth and left and right around the transmitting antenna 112, the closer the distance between the tips at the center of the antenna, the smaller the value, the higher the value.

As described above, by displaying a graph of the relative distance over time, the relative distance between the transmitting antenna 112 and the receiving antenna 122 is checked, and the position where the receiving antenna 122 is closest to the transmitting antenna 112 is located. Can be checked in real time with the naked eye.

Optionally, the display unit 140 may further include a brightness-adjustable LED light. At this time, the LED lighting can be visually confirmed by adjusting the brightness according to the distance between the transmitting antenna 112 and the receiving antenna 122.

In addition, by adding a speaker in place of the LED light, the relative distance can be easily confirmed by adjusting the interval or the pitch of the sound according to the relative distance between the transmitting antenna 112 and the receiving antenna 122.

On the other hand, when a plurality of receiving antennas 122 are arranged in two dimensions to detect the tip position of the guide wire 102, the reception in which the smallest value is calculated based on the relative distance calculated by each of the plurality of receiving antennas 122 The position of the catheter tip may be detected through the position of the antenna 122. Here, the density of the receiving antenna 122 is related to the precision for detecting the position of the catheter tip.

The input unit 150 is operated by a user and may be a mouse or a keyboard. In the input unit 150, a user selection for generating a UWB signal or selecting a display type of the display unit 140 may be input from the signal control unit 110.

By such a configuration, the catheter tip position tracking device 100 prevents the risk of exposure to the patient, and can improve the position accuracy while easily identifying the position of the catheter tip, and does not need to be equipped with additional equipment. Since it does not require the proficiency of can improve the ease of use.

Hereinafter, a catheter tip position tracking method according to an embodiment of the present invention will be described with reference to FIG. 8. 8 is a flow chart of a catheter tip location tracking method according to an embodiment of the present invention.

The catheter tip location tracking method 200 includes generating and receiving a UWB signal (S210), pre-processing the received UWB signal (S220), and calculating a cross-correlation between the standard signal and the received UWB signal (S230). , Calculating a maximum value (S240), calculating a reciprocal of the maximum value (S250), calculating a relative distance (S260), and displaying the calculated relative distance (S270).

In more detail, as shown in FIG. 8, first, a UWB impulse signal is generated to radiate at the end of a peripheral blood vessel vein insertion catheter, and a UWB signal can be received from outside the human body (step S210).

In more detail, the UWB impulse signal, which is an RF signal in the several GHz band, may be generated according to a predetermined period. At this time, an impulse may be generated with sufficient strength to receive a UWB signal having a magnitude equal to or greater than a predetermined value for the emitted UWB signal.

Here, the UWB impulse signal may be radiated through the transmission antenna 112 connected via the guide wire 102. At this time, the transmitting antenna 112 is provided on the tip of the peripheral blood vessel intravenous catheter (PICC) and can be connected to the guide wire 102 within the catheter.

Next, the UWB signal emitted through the transmission antenna 112 may be received through the reception antenna 122 disposed outside the human body.

Next, noise may be removed from the received UWB signal (S220). At this time, noise may be removed by a low-pass filter (LPF) (step S220). For example, noise may be removed by subtracting the average value from the received UWB signal, and averaging with surrounding signals in time.

Also, a signal may be modified by performing at least one of an absolute value operation, a Hilbert operation, a square operation, and a combination operation of the above operations from the received UWB signal.

Next, the correlation between the standard signal normalized to the emitted UWB signal and the received UWB signal may be calculated (step S230). Here, the standard signal is a circular signal radiated from the transmitting antenna 112 to the outside, and may be a normalized UWB signal radiated. For example, the maximum value of the emitted UWB signal may be normalized to 1.

In this case, the standard signal may be normalized using a signal to be radiated from the transmitting antenna 112.

Next, the correlation between the standard signal and the received UWB signal can be calculated. Here, the closer the distance between the transmitting antenna 112 and the receiving antenna 122 is, the stronger the signal is and the degree of distortion is smaller. Therefore, the correlation between the two signals can be calculated by cross-correlation calculation.

Next, a maximum value may be calculated from the results of the cross-correlation calculation (step S240). Here, the maximum value of the cross-correlation calculation is a cross-correlation calculation value by a signal transmitted directly from the transmitting antenna 112 to the receiving antenna 122 with the smallest secondary effect such as reflection and diffraction by the human body.

That is, the maximum value of the cross-correlation calculation may be a value that numerically indicates the intensity and distortion of a UWB signal transmitted directly from the transmitting antenna 112 to the receiving antenna 122.

Next, the calculated maximum value can be inversely calculated (step S250). Here, since the maximum value of the cross-correlation calculation is inversely proportional to the distance between the transmitting antenna 112 and the receiving antenna 122, the reciprocal calculation unit 138 can be converted into a form proportional to the distance for calculating the relative distance.

Next, the relative distance between the catheter tip and the receiving antenna 122 may be calculated based on the calculated reciprocal (step S260). At this time, for the convenience of the user's understanding of the calculated distance, the relative distance may be calculated by multiplying the calculated inverse by a scaling factor.

Next, the calculated relative distance can be displayed in real time (step S270).

At this time, by displaying a graph of the relative distance over time, the relative distance between the transmitting antenna 112 and the receiving antenna 122 is checked, and the receiving antenna 122 determines the location where the distance from the transmitting antenna 112 is closest. It can be checked in real time with the naked eye.

Optionally, the relative distance can be visually confirmed by adjusting the brightness according to the distance between the transmitting antenna 112 and the receiving antenna 122 using the brightness-adjustable LED lighting.

In addition, by using a speaker instead of an LED light, the relative distance can be easily confirmed by adjusting the interval or the height of the sound according to the relative distance between the transmitting antenna 112 and the receiving antenna 122.

By the above method, the catheter tip position tracking method 200 prevents the risk of exposure to the patient, and can improve the position accuracy while easily identifying the position of the catheter tip, and does not need to provide additional equipment. Since it does not require the proficiency of can improve the ease of use.

The above methods may be implemented by the catheter tip positioning device 100 as shown in FIGS. 1 and 2, and in particular, may be implemented as a software program that performs these steps, in this case, such a program. These can be stored on a computer readable recording medium or transmitted by a computer data signal combined with a carrier wave in a transmission medium or communication network.

At this time, the computer-readable recording medium includes all kinds of recording devices in which data readable by a computer system is stored, for example, ROM, RAM, CD-ROM, DVD-ROM, DVD-RAM, magnetic tape , Floppy disk, hard disk, optical data storage device, and the like.

Although one embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art to understand the spirit of the present invention may add elements within the scope of the same spirit. However, other embodiments may be easily proposed by changing, deleting, adding, or the like, but it will also be considered to be within the scope of the present invention.

100: catheter tip position tracking device 110: signal computation unit
112; Transmission antenna 114: Transmission port
122: receiving antenna 124: receiving port
130: operation unit
132: pre-processing unit 134: standard signal generating unit
136: cross-correlation calculation unit 137: inverse calculation unit
139: distance calculation unit 140: display unit
150: input unit

Claims (17)

A signal control unit generating an ultra wide band (UWB) impulse signal and converting the received signal into a digital signal;
A guide wire connected to the signal control unit and transmitting the UWB signal;
A transmission antenna provided at the tip of the catheter and connected to a guide wire in the catheter to radiate the UWB signal externally;
A receiving antenna for receiving the UWB signal emitted from the transmitting antenna; A calculation unit for calculating a relative distance between the catheter tip and the receiving antenna through cross correlation between the radiated UWB signal and the received UWB signal; And
It includes a display unit for displaying the calculated relative distance in real time,
The transmission antenna is made of a straight or curved shape so that the guide wire is easily inserted through the blood vessel,
The receiving antenna is provided on the non-conductive sheet in a conductive pattern,
A catheter tip position tracking device that performs at least one of adjusting the brightness of the LED light and adjusting the interval or height of the sound through the speaker according to the relative distance between the transmitting antenna and the receiving antenna. According to claim 1,
The calculation unit,
A standard signal generator for generating a standard signal normalized to the radiated UWB signal;
A cross-correlation calculating unit calculating cross-correlation between the standard signal and the received UWB signal;
A maximum value calculator configured to calculate a maximum value as a result of the cross-correlation calculation;
An inverse operation unit for inversely calculating the calculated maximum value; And
A catheter tip position tracking device including a distance calculator for calculating a relative distance between the catheter tip and the receiving antenna based on the calculated reciprocal. According to claim 2,
The distance calculation unit is a catheter tip position tracking device for calculating the relative distance by multiplying the calculated reciprocal by a scaling factor. According to claim 1,
A catheter tip location tracking device further comprising a pre-processor for removing noise from the received UWB signal. According to claim 1,
The catheter tip location tracking device further comprises a pre-processor for performing at least one of an absolute value operation, a Hilbert operation, a square operation, and a combination operation of the operation from the received UWB signal. According to claim 1,
The transmission antenna is provided on a plurality of catheter tips,
The receiving antenna is a plurality of catheter tip position tracking device provided in correspondence with the transmitting antenna. According to claim 1,
The guide wire is a catheter tip position tracking device made of a shield cable type. According to claim 1,
The transmitting antenna is a catheter tip position tracking device which is a conductive wire that is not shielded at the end of the guide wire. The method of claim 6,
The transmitting antenna is a catheter tip position tracking device that is provided with an antenna pattern in the unshielded area. According to claim 1,
The receiving antenna is a catheter tip position tracking device consisting of a dot, line array or face array. delete Generating a UWB (Ultra Wide Band) impulse signal;
Externally radiating the UWB signal through a transmission antenna provided at a tip of a peripheral vascular intravenous catheter (PICC) and connected to a guide wire within the catheter;
Receiving a UWB signal emitted from the transmitting antenna through a receiving antenna;
Calculating a relative distance between the catheter tip and the receiving antenna through cross correlation between the radiated UWB signal and the received UWB signal; And
And displaying the calculated relative distance in real time,
The transmission antenna is made of a straight or curved shape so that the guide wire is easily inserted through the blood vessel,
The receiving antenna is provided on the non-conductive sheet in a conductive pattern,
The display step is a catheter tip position tracking method for performing at least one of adjusting the brightness of the LED light and adjusting the interval or height of the sound through the speaker according to the relative distance between the transmitting antenna and the receiving antenna. The method of claim 12,
The step of calculating the relative distance,
Calculating a cross-correlation between the standard signal normalized to the radiated UWB signal and the received UWB signal;
Calculating a maximum value as a result of the cross-correlation calculation;
Reciprocally calculating the calculated maximum value; And
And calculating a relative distance between the catheter tip and the receiving antenna based on the calculated reciprocal. The method of claim 13,
The step of calculating the relative distance is a catheter tip position tracking method for calculating the relative distance by multiplying the calculated reciprocal by a scaling factor. The method of claim 12,
And a pre-processing step of removing noise from the received UWB signal. The method of claim 12,
And a pre-processing step of performing at least one of an absolute value operation, a Hilbert operation, a square operation, and a combination operation of the operation from the received UWB signal. delete

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