Electrically isolated catheter with wireless sensors

FIELD: medicine.

SUBSTANCE: group of inventions relates to medicine and medical equipment, namely to electrically isolated catheters and methods of their manufacturing, as well as for integrated circuit of sealed sensor for attachment to sealed case of catheter. Device contains sealed case of catheter, which includes handle and introduced tip for introduction into patient's body, and sealed sensor, connected to introduced tip. Sensor and case of catheter are hermetically isolated from each other. Device also includes local unit of electric power supply/reception of information, built into introduced tip, and made with possibility of wireless emission of signal, which feeds sensor. Sensor is made with possibility of wireless transmission of information signal into local unit of electric power supply/reception of information. During assembly of catheter case of catheter is provided with handle and introduced tip for introduction into patient. After that local unit of electric power supply/reception of information is configured for it to be capable of building into tip for wireless emission of signal which feeds sensor connected to tip, sensor is configured for wireless transmission of information signal into local unit of electric power supply/reception of information and local unit of electric power supply/reception of information is placed in tip. Sensors and catheter case are sealed and sealed sensor is connected to said tip. In alternative version of implementation device contains integrated circuit of sealed sensor for attachment to sealed catheter case. Said circuit is made with possibility of wireless return of information signal into local unit of electric power supply/reception.

EFFECT: group of inventions ensures efficient transmission of energy for electric supply of sensor and possibility of re-application of catheter and its sterilisation.

17 cl, 5 dwg

 

The present invention generally relates to catheters that use wireless communication, and more specifically to new and useful catheter for carrying out wireless communication with the sensor in the patient's body.

Cardiac catheterization is a diagnostic test to assess the condition of the heart muscle, valves and vessels. During the procedure, the doctor inserts a long, flexible tube, called angiographic catheters, heart and coronary arteries.

The topography of the heart is a special form of catheterization, which is used for patients with certain types of heart rhythm disturbances caused by small areas of abnormal tissue of the heart, which cause the interruption of the normal electrical system of the heart. Flexible tube with wires, called electrode catheter inserted into the heart through the introduction of the intravenous tube and manually summing the catheter in the heart. An array of electrodes on the top of the insertion tip of the catheter can be allocated to monitor the electrical signals of the heart, giving a three-dimensional reconstruction of the electrical functioning of the heart.

The number of topographic electrodes in the array may be twenty or more. They all connect to the connector in the handle is very thin and flexible wires, cut OCD which the wives tube or sheath, which is in contact with the handle.

Conventional catheters are open and cannot be sterilized. Thus, conventional catheters are expensive and disposable devices.

Also conventional catheters are difficult to manufacture due to the connection of numerous thin wires through the shell.

You want to correct the shortcomings of conventional catheters.

The following description discloses a new catheter, having sealed the catheter body, which includes the handle and the insertion tip for insertion into the patient. Further, the catheter includes a sealed sensor attached to the input lug and is able to send information signals. The sensor and the catheter body is hermetically isolated from each other. In the insertion tip of the catheter body is built of the local power supply/reception of information (PDDR) for wireless emission signal, which powers the sensor and for receiving information signals from the sensor.

Also disclosed a method of assembling a new catheter. The method includes providing the housing of the catheter, which has the handle and the insertion tip for insertion into the patient. Local power supply/reception of information (PDDR), which should be embedded in the insertion tip of the catheter body, made with the option of the wireless excitation signal, which powers the sensor, which should accede to the insertion tip, and the wireless reception of the information signal from the sensor. The sensor, which should join the input tip is configured to wirelessly receive the emitted signal for zapisywania and wirelessly send information signal in the local block PDDR. The sensor and the catheter body is hermetically isolated from each other, and to the input tip is attached sealed sensor.

A new catheter is easier to manufacture and can be sterilized and reused.

In addition, the close proximity between the sensor and the local PDDR unit allows for efficient transfer of energy to power the sensor.

These and other aspects will be apparent from these embodiments.

Detailed description of the new catheter is described below with the aid of the following drawings, where like or similar elements in different drawings are denoted by the same numbers of positions:

1 is a diagram showing an illustrative first variant implementation of the catheter,

2 is a diagram showing an illustrative second variant implementation of the catheter,

figa and 3B is a flowchart of the sequence of an illustrative Assembly of the catheter,

figa and 4B depict illustrative ant is NY with a magnetic circuit, and

figa and 5B depict an illustrative electrostatic antenna.

Figure 1 shows a catheter 100 in the illustrative, but not limiting example. The catheter 100 includes a housing 110 of the catheter, with the handle 140 and the exhaust from the arm 140 input tip 170 for insertion into the patient. The insertion tip 170 includes a sensor 120, the tube or shell 150 and the local unit 180 power supply/reception of information (PDDR). The sensor 120 measures or takes the property of the patient (e.g., fluid flow, oxygen, pressure, location, etc) and is able to send information signal reflecting the measured or perceived property. The tube or sheath 150 surrounds the electrode 160, which represents one of the electrode array. The shell 150 is sufficiently long to be inserted through a vein of the patient and fed to achieve a body organ such as the heart. Accordingly, in figure 1 it is shown by the dashed line. Local unit 180 power supply/reception of information (PDDR) made with wireless messages with sensor 120, including a wireless signal is emitted, which supplies the sensor 120, and the wireless reception of information signals sent from the sensor 120. The remote unit 190 PDDR is located in the handle 140 to communicate with the local unit 180 PDDR. Wire, such as coaxia the capacity of the cable 195, shown connecting the remote unit 190 PDDR with the control system 130 of the sensor, although the cable may be replaced by a wireless connection.

It should be noted that the insertion tip 170, which includes a local unit 180 PDDR, have mainly during work fully in the body of the patient. The rest of the body 110 of the catheter remains outside of the patient. The close proximity between the local PDDR unit 180 and the sensor 120 leads to a more efficient transfer of power. Zapisywanie sensor 120 activates the sensor 120 to perform the reading and sending of the information signal, reflective reading, local PDDR unit 180. The sensor 120 may be a storage device for saving data to be read for use in the formation of the information signal. In the prior art well-known method of zapisywania passive repeater to allow the relay to return information signal. To avoid mutual interference, the signal power and/or data signals can be multiplexed by frequency division or time. For example, information signals may be in the range from 2 KHz to 10 KHz, whereas the signal power can be in the range from 20 KHz to 200 KHz. Multiplexing, whether temporary or frequency, may include the signal power and/or details rationae signals for multiple sensors, distributed in the array of electrodes. It is possible that the sensor 120 has been reported to the local unit 180 PDDR, using a magnetic field generated by the antenna with a magnetic circuit, in order to avoid mutual interference with electrical potentials in the heart, and because the transmitted energy has a large correlation with the frequency. For signal input power and for transmission of information signals in the sensor 120 has one antenna with magnetic circuit. However, in the framework of the invention it is possible to use a separate antenna for power and information, or separate antennas for input and output or information or power. In addition, the antenna(s) can be performed as electrostatic, and not in the form of a magnetic circuit.

Similarly, local PDDR unit 180 may be powered by the remote unit 190 PDDR, because the proximity of the blocks 180 and 190 makes effective transfer of energy. The remote unit 190 PDDR powered control electronics 130 of the sensor through the cable 195 or wireless manner. Thus, the remote unit 190 PDDR sends power to the local PDDR unit 180, and receives data from the local unit 180 PDDR. Frequency or temporal multiplexing can also be used to avoid mutual interference during communication between the local and remote units 180, 190 PDDR, respectively. Preferably, l is unique PDDR unit 180 communicates with a remote unit 190 PDDR by a magnetic field. Also preferably, each of the blocks 180, 190 had a single antenna for transmitting power and information.

Figure 2 illustrates a second variant implementation of the catheter 200. It differs from the first variant of realization of the fact that the remote unit 190 PDDR is missing, and the local unit 280 PDDR extends cable 295. Mainly to control the array of electrodes need one wire or cable 295. The second variant implementation of the catheter 200 also includes a sensor 220 that is included or embedded in an integrated circuit (IC), which is discussed in more detail below on figb.

Possible to the sensor 220 was reported to the local unit 180 PDDR, using a magnetic field generated by the antenna with a magnetic circuit, in order to avoid mutual interference with electrical potentials in the heart, and because the transmitted energy has a large correlation with the frequency. For signal input power and for transmission of information signals has one antenna with magnetic circuit. However, in the framework of the invention it is possible to use a separate antenna for power and information, or a separate antenna for input and output or information or power. In addition, the antenna(s) can be performed as electrostatic, and not with a magnetic circuit. Thus, it is possible to integrate the antenna with magnetic to the round or electrostatic antenna in the IP scheme along with the sensor 220 and the corresponding antenna with magnetic circuit or electrostatic antenna in the local unit 180 PDDR for wireless messages.

Figa depicts an illustrative method of creation of the catheter 100. Provide housing 110 of the catheter, with the handle 140 and the input tip 170 (step 310A). Local unit 180, 280 power supply/reception of information (PDDR), which should be embedded in the input tip 170 of the housing 110 of the catheter is made with the possibility of the wireless excitation signal, which supplies the sensor 120, which should join the input tip 170 and the wireless reception of the information signal from the sensor 120 (step 320A). The sensor 120, which should join the input tip 170, is configured to wirelessly receive the emitted signal (for zapisywania) and wirelessly send information signal in the local block PDDR (step 330A). Local block PDDR feature in the input tip 170 (step 340A). The sensor 120 and the housing 110 of the catheter is hermetically isolated from each other (step 350A). Sealed sensor attached to the input tip (step 360A).

Figb depicts an illustrative method of creating a catheter 200, in which the sensor 220 include or embed in an integrated circuit (IC). Provide housing 110 of the catheter, with the handle 140 and the input tip 170 (step B). Local unit 180, 280 power supply/reception of information (PDDR), which should be embedded in the input tip 170 of the housing 110 of the catheter, done the n with wireless emission signal for zapisywania sensor 220 and reception of the information signal (step B). The sensor 220, which should join made with the possibility of wireless reception of the emitted signal (for zapisywania) and wirelessly send information signal in the local block PDDR (phase B). Local unit 180, 280 PDDR feature in the input tip 170 of the housing 110 of the catheter (step B). The housing 110 of the catheter and the sensor 220 individually sealed and electrically isolated from each other (step B). For sealing and insulation can be used the polymer. Then IP is wrapped around the end of the electrode 160 (step B). You want the IP was flexible. In the wrapped position, is fixed to the electrode 160 by attaching adhesive, so that the IP remains fixed on the electrode during use of the catheter 200, that is, during the introduction and extraction of the catheter 200 (step B).

Figa depicts an illustrative configuration of the antenna 400 with a magnetic circuit, applicable to local and remote units 180, 190 PDDR. Antenna 400 includes two circuits 410, 420, connected in series and located in respective parallel planes. Also shown is the trajectory 430, 440 of the magnetic flux generated by the antenna 400 with a magnetic circuit.

Figb depicts the antenna 450 with a magnetic circuit for the sensor 120 or sensor 220 that is included or embedded in the IP with internal or Pervy the s 455 winding and an external or secondary winding 460. The primary winding 455 included in the secondary winding 460, so that the secondary winding covers the flow generated during transmission. Two windings 455, 460 have no electrical connection between them. Instead, they are bound by mutual induction. Physically, the secondary winding 460 can be supported by the primary winding 455 dielectric, for example, a polymer.

Figa is an alternative implementation for the antenna, which is not magnetic circuit, and an electrostatic antenna. Antenna 510 for blocks 180, 190 includes two hollow semicylinder 520, 530 with a semicircular cross section.

Figb depicts the electrostatic antenna 540 sensor 120 or sensor 220 included or built-in IP, which includes an outer pair of 550, 560 semicircular cylinder 530 with a semicircular cross-section, with the inner pair of 570, 580, which is concentrically placed in the outer pair.

Although the present invention is illustrated and described in detail in the drawings and foregoing description, such illustration and description are illustrative and not limiting: the invention is not limited to the disclosed variants of implementation.

For example, although IP has been described as axially wrapped around the electrode, IP can be bent into other shapes or may be attached to the perfect location or orientation.

In the implementation in practice of the claimed invention, the experts can understand and employ other variations of the disclosed embodiments of the study of drawings, descriptions and claims. In the claims, the word "comprising" does not exclude other elements or steps, singular does not exclude the presence of the plural. A single processor or other unit may fulfill the functions of several products, as claimed in the claims. The mere fact that certain measures announced in the various dependent clauses, not to say that you cannot advantageous to use a combination of these measures. The computer program may be stored/distributed on a suitable medium such as an optical storage medium or a solid-state storage medium supplied together with other hardware or as part of them, but can also be distributed in other forms, for example, via the Internet or other wired or wireless communication systems. Item numbers in paragraphs shall not be construed as limiting the scope of the claims.

1. The catheter contains:
sealed catheter body comprising a handle and an insertion tip for insertion into the patient's body, and sealed sensor attached to the mentioned input tip is, being the m sensor and the catheter body is hermetically isolated from each other, and
local power supply/reception of information embedded in the insertion tip, and is made with wireless emission signal, which powers the sensor, and the said sensor is configured to wirelessly send the information signal to the local power supply/reception of information.

2. The catheter according to claim 1, additionally containing an integrated circuit with a sensor, built-in so that the seal seals the integrated circuit, and integrated circuit is flexible.

3. The catheter according to claim 2, in which the said tip includes an end electrode, and integrated circuit wrapped around the electrode end.

4. The catheter according to claim 1 in which the said block is electrically isolated from the sealed sensor.

5. The catheter of claim 1, wherein the sensor further comprises an antenna with a magnetic circuit having an inner winding and an outer winding, each winding has two circuits in respective parallel planes, and the inner coil is placed inside the outer winding.

6. The catheter according to claim 1, additionally containing one cable located longitudinally inside the catheter to be pulled through between the said block and a controller for controlling the sensor, and the said cable is a coaxial cable.

7. The Catete is R. according to claim 1, additionally contains the remote power supply/reception of information located within the handle and configured to wirelessly communicate with the local power supply/reception of information, and a controller for controlling the sensor.

8. The catheter according to claim 1, additionally containing an integrated circuit with built-in sensor and built-in electrostatic antenna, and the said block is also built electrostatic antenna for wireless messages with the electrostatic antenna that is built into an integrated circuit.

9. The catheter according to claim 1, in which the accession is fixed so that sealed the sensor remains fixed at the tip in the introduction and during removal of the catheter from the patient.

10. The method of Assembly of the catheter containing phases in which:
ensure the catheter body handle and the insertion tip for insertion into the patient;
configure the local power supply/reception of information that it was built in the above-mentioned tip for wireless emission signal, which powers the sensor, which should accede to the said handpiece;
configure the sensor to wirelessly send the information signal to the local power supply/reception of information;
have a local who th power supply/reception of information in the above-mentioned tip;
seal the sensor and the catheter body so that they are hermetically isolated from each other; and
attach a sealed sensor to said tip.

11. The method according to claim 10, in which the said step of configuring the sensor contains a sensor in an integrated circuit so that the seal seals the integrated circuit, and the said step of joining includes the bending of the integrated circuit.

12. The method according to claim 11, in which said step of providing provides the end of the electrode, as part of the above mentioned tip, and the said bending includes wrapping the integrated circuit around the electrode end.

13. The method according to claim 10, in which the said step of configuring the sensor includes providing the antenna with a magnetic circuit having an inner winding and an outer winding, each winding has two circuits in respective parallel planes, with the inner coil is placed inside the outer winding, these stages provide the antenna with a magnetic circuit contains the configuration of the inner and outer windings, so that they are electrically isolated from each other and located so as to transfer energy to each other by mutual induction.

14. The method according to claim 10, further containing the step location remotely what about the power supply/reception of information inside arm to wirelessly communicate with the local power supply/reception of information.

15. The method according to claim 10, in which the said step of joining includes fixing so that sealed the sensor remains fixed at the tip in the introduction and during removal of the catheter from the patient.

16. Integrated circuit encapsulated sensor for sealed attachment to the catheter body, which contains the handle and the insertion tip for insertion into the patient, whereby said circuit is configured during insertion of said tip to wirelessly communicate with the local power supply/reception of information, which is mentioned in the tip, and which is designed with the capability of emitting the signal supply circuit, and said circuit is designed with wireless return signal information in this block.

17. Integrated circuit according to clause 16, if this referred to the catheter body represents the body of the catheter topography of the heart.



 

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3 dwg

FIELD: medical equipment.

SUBSTANCE: system intends for transmitting cardiologic signals along radio channels; it can be used in hospitals, clinics, for ambulance service and at consultation-diagnostic medical centers. System has equipment for serving patient and control board equipment. Patient serving equipment has electrodes, preamplifier, high frequency first generator, first amplitude modulator, modulating code generator, first phase manipulator, first power amplifier, first receiving-transmitting aerial, second heterodyne, second mixer, first intermediate frequency amplifier, first aerial switch, second power amplifier, third heterodyne, third mixer, second intermediate frequency amplifier, second amplitude limiter, second sync detector, registration unit, multiplier, band-pass filter and second phase detector. Control board equipment has microprocessor, comparison unit, lower and top level's memory units, adjusted threshold unit, alarm signal forming unit, magnet registrar, sound signal unit, second receiving-transmitting aerial, tuning unit, first mixer, second intermediate frequency amplifier, detector, delay line, switch, first amplitude limiter, first sync detector, second delay line, first phase detector, high frequency second generator, analog messages source, second phase manipulator, fourth heterodyne, fourth mixer, intermediate frequency amplifier, third and fourth power amplifiers, second aerial switch. Detector has spectrum width measuring unit, phase doubler, second comparison unit and first threshold unit. Radio channel is used in duplex (two-directional) mode when analog and discrete information is transmitted not only from patient to control board but from control board - to patient or to doctor treating the patient.

EFFECT: improved efficiency.

5 dwg

FIELD: medicine; cardiology.

SUBSTANCE: device can be used in clinical and experimental tests for registration; analysis and transmission of electrocardiographic signal. Parameters of electrocardiographic signal are determined at any point of patient's body due to finding projection of vector of electrocardiographic signal of heart at any preset direction. Device has amplifier, analog-to-digital converter with multiplexer, arithmetic unit, increment code analyzer, switch unit, digital modem, increment code number counter, memory and control units, unit for forming projections of vector of electrocardiographic signal of heart and unit for finding value of vector of electrocardiographic signal of heart at preset direction.

EFFECT: widened operational capabilities.

3 cl, 5 dwg

FIELD: medicine; medical engineering.

SUBSTANCE: method involves measuring physical characteristic of body surface. Micro-vibration power is measured in rest state on the body area under study during 0.5-5 min. Device has micro-vibration transducer and spectrum analyzer connected to visual recording device. The micro-vibration transducer is designed as electronic phonendoscope having pass band of 1-300 Hz. The visual recording device records variations of total micro-vibration spectral power in time. Mean micro-vibration power is determined. Its deviation from a reference value being equal to or greater than 40%, pathological process is considered to be available in the zone.

EFFECT: high accuracy in determining vestibular dysfunction cases.

2 cl, 3 dwg

FIELD: medicine; cardiology.

SUBSTANCE: device for registering electric cardiosignals has amplifier, analog-to-digital converter with multiplexer and arithmetic unit as well as increment code analyzer, switch unit, digital modem, increment code number counter, memory unit, control unit, heart electro-motive force vector projection forming unit, heart electro-motive force vector value determination unit and heart electro-motive force vector direction determination unit. Device has widened functional capabilities of electric cartographic testing by means of finding spatial disposition of electric axis of heart. Projection of heart vector to frontal plane is found from standard abstracts from extremities and to horizontal plane - from chest abstracts. Projection of vector of heart to sagittal plane is determined from projections of vector of heart to frontal and horizontal planes. Direction and value of projection of heart electro-motive force is determined from known projections in three-dimensional space.

EFFECT: improved efficiency.

4 cl, 7 dwg

FIELD: medicine; cardiology.

SUBSTANCE: device for registering resulting electrocardiogram at front and horizontals planes has amplifier, analog-to-digital converter provided with multiplexer, arithmetic device, increment code analyzer, first switching unit, digital modem, first memory unit and control-unit, second switching unit, unit for finding direction of electrical axis of heart, first multiplier and first storing adder.

EFFECT: widened functional capabilities.

2 cl, 4 dwg

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to pediatrics. In children of pre-school age with tuberculosis of intrathotacic lymph nodes indices of heart rhythm variability are determined: rhythmograms - interinterval differences RMSSD (ms), coefficient of variability CV (%), spectrograms - total spectrum power TR (ms2), very low frequency waves of spectrum VLF (ms2), low frequency waves of spectrum LF (ms2), high frequency waves of spectrum HF (ms2). If their values equal: interinterval differences RMSSD - 76.83.92, coefficient of variability CV - 9.90.50, total spectrum power TR - 3437175.3, very low frequency waves of spectrum VLF - 106754.4, low frequency waves of spectrum LF - 100351.2, high frequency waves of spectrum HF - 1900.296,9 vegetative dysfunction is diagnosed.

EFFECT: method increases reliability of diagnostics of impairment of vegetative regulation in children with tuberculosis.

1 tbl, 1 ex

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