CN209946290U

CN209946290U - Switching device and system for electromagnetic interference testing of active implantable cardiac device

Info

Publication number: CN209946290U
Application number: CN201920480488.0U
Authority: CN
Inventors: 张尉强; 张鸣伟; 郁红漪
Original assignee: SHANGHAI TESTING & INSPECTION INSTITUTE FOR MEDICAL DEVICES CO LTD
Current assignee: SHANGHAI TESTING & INSPECTION INSTITUTE FOR MEDICAL DEVICES CO LTD
Priority date: 2019-04-10
Filing date: 2019-04-10
Publication date: 2020-01-14
Anticipated expiration: 2029-04-10

Abstract

The utility model discloses a switching equipment and system for active implanted heart apparatus electromagnetic interference test. The apparatus comprises: an equivalent tissue circuit simulating human tissue; the connection switching module is connected with the implanted pulse generator and comprises a single-pole and double-pole connection switching unit, a common-difference mode connection switching unit and a chamber connection mode switching unit, and a connecting circuit between the implanted pulse generator and the equivalent tissue circuit is replaced according to the on-off states of circuits of the single-pole and double-pole connection switching unit, the common-difference mode connection switching unit and the chamber connection mode switching unit so as to switch to a corresponding test mode; the single-pole and double-pole connection switching unit is switched to a single-pole test mode or a double-pole test mode; the common-mode and differential-mode connection switching unit is switched to a common-mode test mode or a differential-mode test mode; and the chamber connection mode switching unit is switched to a direct connection mode or a non-direct connection mode. The utility model discloses reduce the wiring operation that relapses, promote efficiency of software testing, improve test result reliability and repeatability.

Description

Switching device and system for electromagnetic interference testing of active implantable cardiac device

Technical Field

The utility model relates to a non-ionization electromagnetic interference test field of active implanted medical instrument indicates a switching equipment and system for active implanted heart apparatus electromagnetic interference test especially.

Background

An active implantable cardiac device refers to a device implanted in a patient's body to treat arrhythmia in an active implantable medical device, such as: cardiac pacemakers, cardiac defibrillators, and the like belong to three high-risk medical instruments.

In order to ensure the life safety of patients, the active implantable cardiac device is required to have better immunity performance to non-ionizing electromagnetic radiation interference, therefore, before the product is on the market, the product needs to be tested for the protection of the non-ionizing electromagnetic radiation to verify the electromagnetic compatibility, and the international standards of ISO 14117, ISO14708-2 and ISO14708-6 have detailed test methods and requirements, and the latter two have been equivalently transformed into the national mandatory standards.

Testing of non-ionizing electromagnetic radiation of implantable pulse generators according to these standards typically involves testing of multiple chambers (atria, ventricles), defibrillation interfaces, and corresponding multiple test loops (differential mode, common mode), requiring multiple circuit connection switches between equivalent tissues and the involved chambers and interfaces in the same experiment, which is cumbersome and prone to error, and if manually wired, it is prone to connection error, and it is difficult to find connection error. In addition, due to frequent connection operation of the connection lines and the large number of the connection lines, the reliability and repeatability of the test are easily affected by poor connection contact.

Disclosure of Invention

The utility model aims at providing a switching equipment and system for active implanted heart apparatus electromagnetic interference test, the utility model discloses the realization reduces the wiring operation that relapse, promotes efficiency of software testing through the modular circuit, improves the reliability and the repeatability of test result.

The utility model provides a technical scheme as follows:

the utility model provides a switching equipment for active implanted heart apparatus electromagnetic interference test, include:

the equivalent tissue circuit is used for simulating human tissues;

the connection switching module is connected with the implanted pulse generator, comprises a single-pole and double-pole connection switching unit, a common-difference mode connection switching unit and a chamber connection mode switching unit, and is used for replacing a connection circuit between the implanted pulse generator and the equivalent tissue circuit according to the circuit on-off states of the single-pole and double-pole connection switching unit, the common-difference mode connection switching unit and the chamber connection mode switching unit so as to switch to a corresponding test mode;

the single-pole and double-pole connection switching unit is used for switching to a single-pole test mode or a double-pole test mode;

the common-mode and differential-mode connection switching unit is used for switching to a common-mode test mode or a differential-mode test mode;

the chamber connection mode switching unit is used for switching to a direct connection mode or a non-direct connection mode.

Optionally, the chamber connection mode switching unit includes a right atrium connection mode switching subunit, a right ventricle connection mode switching subunit, and a left ventricle connection mode switching subunit;

the single/double pole connection switching unit includes: the first single-double pole connection switching subunit, the second single-double pole connection switching subunit and the third single-double pole connection switching subunit are connected in series;

the common differential mode connection switching unit includes: the first common-differential mode connection switching subunit, the second common-differential mode connection switching subunit and the third common-differential mode connection switching subunit are connected;

the first unipolar and bipolar connection switching subunit is connected with the first common-differential mode connection switching subunit or a right atrium connection mode switching subunit, and the right atrium connection mode switching subunit is connected with the first common-differential mode connection switching subunit;

the second unipolar and bipolar connection switching subunit is connected with the second common differential mode connection switching subunit or the right ventricle connection mode switching subunit, and the right ventricle connection mode switching subunit is connected with the second common differential mode connection switching subunit;

the third unipolar and bipolar connection switching subunit is connected with the third common differential mode connection switching subunit or the left ventricle connection mode switching subunit, and the left ventricle connection mode switching subunit is connected with the third common differential mode connection switching subunit;

the right atrium connection mode switching subunit is used for switching to a target test mode corresponding to the right atrium according to the on-off states of the circuit of the right atrium connection mode switching subunit, the first single-bipolar connection switching subunit and the first common differential mode connection switching subunit;

the right ventricle connection mode switching subunit is used for switching to a target test mode corresponding to the right ventricle according to the line on-off state of the right ventricle connection mode switching subunit, the second single-double pole connection switching subunit and the second common differential mode connection switching subunit;

the left ventricle connection mode switching subunit is used for switching to a target test mode corresponding to the left ventricle according to the line on-off state of the left ventricle connection mode switching subunit, the third single-double pole connection switching subunit and the third common differential mode connection switching subunit;

the target test mode comprises any one of a monopole direct connection test mode, a monopole non-direct connection test mode, a bipolar common mode non-direct connection test mode, a bipolar differential mode direct connection test mode and a bipolar differential mode non-direct connection test mode.

Optionally, the first single-double pole connection switching subunit includes a first three-pole double-throw switch and a connection port;

the second single-double pole connection switching subunit comprises a second three-pole double-throw switch and a connection port;

the third single-double pole connection switching subunit comprises a third three-pole double-throw switch and a connection port;

the first common-mode-connection switching subunit comprises a first four-pole double-throw switch;

the second common differential mode connection switching subunit comprises a second four-pole double-throw switch;

the third common differential mode connection switching subunit comprises a third four-pole double-throw switch;

the right atrium connection mode switching subunit comprises a first diode double-throw switch and a connection port;

the right ventricle connection mode switching subunit comprises a second double-pole double-throw switch and a connection port;

the left ventricle connection mode switching subunit comprises a third double-pole double-throw switch and a connection port;

the two-pole double-throw switch, the three-pole double-throw switch and the four-pole double-throw switch comprise linkage control ports and communication switching ports;

the communication switching port of the two-pole double-throw switch comprises a direct connection communication switching port and a non-direct connection communication switching port, and the non-direct connection communication switching port is connected with a corresponding resistor in series; the communication switching port of the four-pole double-throw switch comprises a common-mode communication switching port and a differential-mode communication switching port; the communication switching port of the three-pole double-throw switch comprises a double-pole communication switching port and a single-pole communication switching port;

the linkage control ports of the first, second and third three-pole double-throw switches are respectively connected with the corresponding interfaces of the equivalent organization circuit through connecting ports;

the linkage control ports of the first diode double-throw switch, the second diode double-throw switch and the third diode double-throw switch are respectively connected with the corresponding interfaces of the implanted pulse generator through connecting ports;

a bipolar communication switching port of the first three-pole double-throw switch is connected with a communication switching port of the first four-pole double-throw switch, and a linkage control port of the first four-pole double-throw switch is connected with the communication switching port of the first two-pole double-throw switch so as to switch to a corresponding bipolar test mode; a single-pole communication switching port of the first three-pole double-throw switch is connected with a communication switching port of the first two-pole double-throw switch so as to switch to a single-pole test mode corresponding to the right atrium;

a bipolar communication switching port of the second three-pole double-throw switch is connected with a communication switching port of the second four-pole double-throw switch, and a linkage control port of the second four-pole double-throw switch is connected with the communication switching port of the second two-pole double-throw switch so as to switch to a corresponding bipolar test mode; a single-pole communication switching port of the second three-pole double-throw switch is connected with a communication switching port of the second two-pole double-throw switch so as to switch to a single-pole test mode corresponding to a right ventricle;

a bipolar communication switching port of the third three-pole double-throw switch is connected with a communication switching port of the third four-pole double-throw switch, and a linkage control port of the third four-pole double-throw switch is connected with the communication switching port of the third two-pole double-throw switch so as to switch to a corresponding bipolar test mode; and a single-pole communication switching port of the third three-pole double-throw switch is connected with a communication switching port of the third two-pole double-throw switch so as to switch to a single-pole test mode corresponding to the left ventricle.

Optionally, the equivalent tissue circuit is connected to the first oscilloscope, the second oscilloscope and the test signal generator.

Optionally, the equivalent tissue circuit is connected to the first oscilloscope, the second oscilloscope, the suppression signal generator, and the test signal generator.

Optionally, the connection port includes: a right atrium positive/negative port, a right ventricle positive/negative port, a left ventricle positive/negative port, a defibrillation positive/negative interface and a housing port;

the implantable pulse generator comprises: a right atrium positive/negative electrode interface, a right ventricle positive/negative electrode interface, a left ventricle positive/negative electrode interface, a defibrillation positive/negative electrode interface and a shell interface;

the defibrillation positive port is connected with a defibrillation positive interface of the implantable pulse generator, and the defibrillation negative port is connected with a defibrillation negative interface of the implantable pulse generator;

the linkage control ports of the first quadrupole double-throw switch, the second quadrupole double-throw switch and the third quadrupole double-throw switch are respectively connected with the shell interface of the implanted pulse generator through the shell port;

the linkage control port of the first diode double-throw switch is respectively connected with a right atrium anode port and a right atrium cathode port, and the right atrium anode/cathode port is respectively connected with a right atrium anode/cathode interface of the implantable pulse generator;

the linkage control port of the second double-pole double-throw switch is respectively connected with a right ventricle positive electrode port and a right ventricle negative electrode port, and the right ventricle positive/negative electrode port is respectively connected with a right ventricle positive/negative electrode interface of the implantable pulse generator;

the linkage control port of the third double-pole double-throw switch is respectively connected with the positive port of the left ventricle and the negative port of the left ventricle, and the positive/negative ports of the left ventricle are respectively connected with the positive/negative interfaces of the left ventricle of the implanted pulse generator;

and the defibrillation positive/negative port is respectively connected with the defibrillation positive interface of the implantable pulse generator.

Optionally, the connection switching module further includes:

and the test chamber selection unit is used for switching to the corresponding test chamber.

Optionally, the test chamber selection unit includes: and the fourth three-pole double-throw switch is used for switching and selecting the corresponding test chamber according to the on-off states of the fourth three-pole double-throw switch and the lines of the first three-pole double-throw switch, the second three-pole double-throw switch and the third three-pole double-throw switch.

Optionally, the three-pole double-throw switch includes a first linkage control port, a second linkage control port, and a third linkage control port;

the fourth three-pole double-throw switch comprises three communicated switching port groups, and each communicated switching port group comprises a first communicated switching port, a second communicated switching port and a third communicated switching port;

a first linkage control port of the first three-pole double-throw switch is respectively connected with a first communication switching port group and a third communication switching port of a third communication switching port group of the fourth three-pole double-throw switch; the second linkage control port of the first three-pole double-throw switch is connected with the third communication switching port of the second communication switching port group of the fourth three-pole double-throw switch; a third linkage control port of the first three-pole double-throw switch is grounded;

the first linkage control port of the second three-pole double-throw switch is respectively connected with the second communication switching ports of the first communication switching port group and the third communication switching port group of the fourth three-pole double-throw switch; a second linkage control port of the second three-pole double-throw switch is connected with a second communication switching port of a second communication switching port group of the fourth three-pole double-throw switch; a third linkage control port of the second three-pole double-throw switch is grounded;

the first linkage control port of the third three-pole double-throw switch is respectively connected with the first communication switching port group of the fourth three-pole double-throw switch and the first communication switching port of the third communication switching port group; the second linkage control port of the third three-pole double-throw switch is connected with the first communication switching port of the second communication switching port group of the fourth three-pole double-throw switch; a third linkage control port of the third three-pole double-throw switch is grounded;

and the fourth three-pole double-throw switch is used for switching and selecting the corresponding test chamber according to the on-off state of the circuit of the communication switching port group of the linkage control port and the communication switching port group.

Optionally, the connection port further includes: a first port, a second port, a third port, a fourth port, a fifth port;

the equivalent tissue circuit includes: the first interface, the second interface, the third interface, the fourth interface, the fifth interface, the sixth interface, the seventh interface, the eighth interface and the ninth interface;

a first interface of the equivalent tissue circuit is connected with the first port, a second interface of the equivalent tissue circuit is connected with the second port, a third interface of the equivalent tissue circuit is connected with the third port, a fourth interface of the equivalent tissue circuit is connected with the fourth port, and a fifth interface of the equivalent tissue circuit is connected with the fifth port;

a sixth interface of the equivalent tissue circuit is connected with the first oscilloscope;

a seventh interface of the equivalent tissue circuit is connected with the suppression signal generator;

an eighth interface of the equivalent tissue circuit is connected with the second oscilloscope;

and a ninth interface of the equivalent tissue circuit is connected with the test signal generator.

The utility model also provides a switched systems for active implanted heart apparatus electromagnetic interference test, including the switching equipment who is used for active implanted heart apparatus electromagnetic interference test, still include:

the test signal generator is connected with the equivalent tissue circuit and used for generating a test signal;

the first oscilloscope is connected with the equivalent tissue circuit and is used for monitoring the test signal from the test signal generator;

the second oscilloscope is connected with the equivalent tissue circuit and is used for monitoring pulse signals from the implanted pulse generator;

the switching device for the electromagnetic interference test of the active implantable cardiac instrument comprises:

the equivalent tissue circuit is used for simulating human tissues;

the chamber connection mode switching unit is used for switching to a direct connection mode or a non-direct connection mode;

and the processing terminal is connected with the first oscilloscope, the second oscilloscope and the test signal generator, is used for controlling the emission of the test signal generator, is used for reading data from the first oscilloscope and the second oscilloscope, and detects to obtain test results in different test modes.

Optionally, the method further includes: the suppression signal generator is connected with the equivalent tissue circuit and is used for generating an analog pulse signal; the analog pulse signal is a heart pulse signal generated by an analog human body.

Compared with the prior art, the utility model provides a switching equipment and system for active implanted heart apparatus electromagnetic interference test brings following technological effect: repeated wiring operation is reduced, the testing efficiency is improved through the modular circuit, and the reliability and repeatability of the testing result are improved.

Drawings

The following detailed description of preferred embodiments will provide further description of a switching apparatus and system features, technical features, advantages, and implementations thereof for electromagnetic interference testing of an active implantable cardiac device in a clearly understandable manner, in conjunction with the accompanying drawings.

Fig. 1 is a schematic diagram of an embodiment of a switching apparatus for electromagnetic interference testing of an active implantable cardiac device according to the present invention;

fig. 2 is a schematic circuit diagram of the internal structure of a switching device for electromagnetic interference testing of an active implantable cardiac device according to the present invention;

fig. 3 is a schematic diagram of another embodiment of a switching apparatus for electromagnetic interference testing of an active implantable cardiac device according to the present invention;

FIG. 4 is a schematic diagram of a switching system for electromagnetic interference testing of an active implantable cardiac device according to the present invention;

fig. 5 is a schematic product structure diagram of the switching device (E102 test network) for electromagnetic interference test of the active implantable cardiac device according to the present invention.

Detailed Description

In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.

For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

As shown in fig. 1 and 2, the present invention provides an embodiment of a switching device 300 for electromagnetic interference testing of an active implantable cardiac device, comprising:

an equivalent tissue circuit 310 for simulating human tissue;

the connection switching module 350 is connected with the implanted pulse generator 200, and includes a single-pole and double-pole connection switching unit 320, a common-difference mode connection switching unit 330 and a chamber connection mode switching unit 340, and is configured to replace a connection line between the implanted pulse generator 200 and the equivalent tissue circuit 310 according to the on-off states of the lines of the single-pole and double-pole connection switching unit 320, the common-difference mode connection switching unit 330 and the chamber connection mode switching unit 340, so as to switch to a corresponding test mode;

the single/double pole connection switching unit 320 is used for switching to a single pole test mode or a double pole test mode;

the common mode and differential mode connection switching unit 330 is configured to switch to a common mode test mode or a differential mode test mode;

the chamber connection mode switching unit 340 is configured to switch to a direct connection mode or a non-direct connection mode.

As shown in fig. 1, 2, and 3, the present invention provides an embodiment of a switching system for electromagnetic interference testing of an active implantable cardiac device, comprising: a switching device 300 for electromagnetic interference testing of an active implantable cardiac device; further comprising:

a test signal generator 400 connected to the equivalent tissue circuit 310 for generating a test signal;

a first oscilloscope 600 connected to the equivalent tissue circuit 310 for monitoring the test signal from the test signal generator 400;

a second oscilloscope 500 connected to the equivalent tissue circuit 310 for monitoring the pulse signal from the implanted pulse generator 200;

the switching device 300 for electromagnetic interference testing of an active implantable cardiac instrument comprises:

the equivalent tissue circuit 310 is used for simulating human tissues;

a unipolar and bipolar connection switching unit 320 for switching to a unipolar test mode or a bipolar test mode;

a common mode and differential mode connection switching unit 330 for switching to a common mode test mode or a differential mode test mode;

a chamber connection mode switching unit 340 for switching to a direct connection mode or a non-direct connection mode;

and the processing terminal 900 is connected to the first oscilloscope 600, the second oscilloscope 500 and the test signal generator 400, and is configured to control emission of the test signal generator 400, and to read data from the first oscilloscope 600 and the second oscilloscope 500, and detect test results in different test modes.

Specifically, the present invention is applied to a test mode switching control system for non-ionizing electromagnetic interference test of an active implantable cardiac device (the test items are defined by the contents in international standard ISO 14117 standard 4.3, 4.4, 4.5.1, 4.5.2, 4.5.3, and ISO14708-2 and ISO14708-6 27.3, 27.4, 27.5.1, 27.5.2), referring to fig. 4, the equivalent tissue circuit 310 is an equivalent tissue of E102 type (the relevant definition of the equivalent tissue of E102 can be referred to fig. 131, fig. 138-139 in standard ISO 14708-2: 2005). The implantable pulse generator 200 is an implantable pulse generator 200 with defibrillation function, such as an implantable cardioverter defibrillator and an implantable cardiac pacemaker with defibrillation function. The implantable cardioverter defibrillator has a pacing electrode interface and a defibrillation electrode interface. The pacing electrode interface has all the basic functions of a bipolar cardiac pacemaker, and the defibrillation electrode interface is a connection port for the release of electrical pulses or shocks for treating arrhythmia. As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the present invention integrates and sets the equivalent tissue circuit 310, the single-pole and double-pole connection switching unit 320, the common differential mode connection switching unit 330, the chamber connection mode switching unit 340, and the detection control unit 350 on the same device. The equivalent tissue circuit 310 includes the equivalent tissue of E102 and the corresponding connection interfaces connected to the unipolar and bipolar connection switching unit 320, the common mode and differential mode connection switching unit 330, the chamber connection mode switching unit 340, and the detection control unit 350. As shown in fig. 4, the E102 test network is an integrated module structure integrating the equivalent organization circuit 310 having the E102 type equivalent organization shown in fig. 2 and the connection switching module 11 (the unipolar and bipolar connection switching unit 320, the common-differential mode connection switching unit 330, the chamber connection mode switching unit 340, the detection control unit 350, and the test chamber selection unit).

Through the utility model discloses a switching equipment 300 for active implanted heart apparatus electromagnetic interference test accomplishes the wiring according to the experimental connection picture for the tester to and whether the connection of each wiring is correctly judged to the naked eye, the utility model discloses only need the tester to correspond the circuit break-make state who switches each unit according to the test item name, realize swiftly switching, reduced the operation degree of difficulty and loaded down with trivial details degree widely, can reduce the wiring operation repeatedly, greatly reduced wiring and the time that the inspection wiring is correct.

As shown in fig. 1 and 2, the present invention provides another embodiment of a switching device 300 for electromagnetic interference testing of an active implantable cardiac device, comprising:

the chamber connection mode switching unit 340 includes a right atrium connection mode switching subunit (not shown), a right ventricle connection mode switching subunit (not shown), and a left ventricle connection mode switching subunit (not shown);

the unipolar and bipolar connection switching unit 320310 includes: a first unipolar and bipolar connection switching subunit (not shown), a second unipolar and bipolar connection switching subunit (not shown), and a third unipolar and bipolar connection switching subunit (not shown);

the common mode/differential mode connection switching unit 330320 includes: a first common mode connection switching subunit (not shown), a second common mode connection switching subunit (not shown), and a third common mode connection switching subunit (not shown);

The first single-double pole connection switching subunit comprises a first three-pole double-throw switch (S11) and a connection port;

the second single-double pole connection switching subunit comprises a second three-pole double-throw switch (S10) and a connection port;

the third single-double pole connection switching subunit comprises a third three-pole double-throw switch (S9) and a connection port;

the first common mode connection switching subunit includes a first quadrupole double throw switch (S3);

the second common differential mode connection switching subunit includes a second quadrupole double throw switch (S4);

the third common differential mode connection switching subunit includes a third quadrupole double throw switch (S5);

the right atrium connection mode switching subunit comprises a first diode double-throw switch (S6) and a connection port;

the right ventricle connection mode switching subunit comprises a second double-pole-throw switch (S7) and a connection port;

the left ventricle connection mode switching subunit comprises a third pole double throw switch (S8) and a connection port;

the linkage control ports of the first three-pole double-throw switch (S11), the second three-pole double-throw switch (S10) and the third three-pole double-throw switch (S9) are respectively connected with the corresponding interfaces of the equivalent organization circuit 310 through connection ports;

the linkage control ports of the first diode double-throw switch (S6), the second diode double-throw switch (S7) and the third diode double-throw switch (S8) are respectively connected with the corresponding interfaces of the implanted pulse generator 200 through connecting ports;

a bipolar communication switching port of the first three-pole double-throw switch (S11) is connected with a communication switching port of the first four-pole double-throw switch (S3), and a linkage control port of the first four-pole double-throw switch (S3) is connected with a communication switching port of the first two-pole double-throw switch (S6) to switch to a corresponding bipolar test mode; a single-pole communication switching port of the first three-pole double-throw switch (S11) is connected with a communication switching port of the first two-pole double-throw switch (S6) to switch to a single-pole test mode corresponding to the right atrium;

a bipolar communication switching port of the second three-pole double-throw switch (S10) is connected with a communication switching port of the second four-pole double-throw switch (S4), and a linkage control port of the second four-pole double-throw switch (S4) is connected with a communication switching port of the second two-pole double-throw switch (S7) so as to switch to a corresponding bipolar test mode; a single-pole communication switching port of the second three-pole double-throw switch (S10) is connected with a communication switching port of the second two-pole double-throw switch (S7) so as to switch to a single-pole test mode corresponding to a right ventricle;

a bipolar communication switching port of the third three-pole double-throw switch (S9) is connected with a communication switching port of the third four-pole double-throw switch (S5), and a linkage control port of the third four-pole double-throw switch (S5) is connected with a communication switching port of the third two-pole double-throw switch (S8) so as to switch to a corresponding bipolar test mode; the single-pole communication switching port of the third three-pole double-throw switch (S9) is connected with the communication switching port of the third two-pole double-throw switch (S8) to switch to a single-pole test mode corresponding to the left ventricle.

The connection port includes: a right atrial positive/negative port (RA-TIP or RA-RING), a right ventricular positive/negative port (RV-TIP or RV-RING), a left ventricular positive/negative port (LV-TIP or LV-RING), a defibrillation positive/negative interface and a housing port (W);

the implantable pulse generator 200 comprises: a right atrium positive/negative interface (RA-TIP or RA-RING), a right ventricle positive/negative interface (RV-TIP or RV-RING), a left ventricle positive/negative interface (LV-TIP or LV-RING), a defibrillation positive/negative interface and a housing interface (W);

the defibrillation positive port (CD +) is connected with the defibrillation positive interface (CD +) of the implanted pulse generator 200, and the defibrillation negative port (CD-) is connected with the defibrillation negative interface (CD-) of the implanted pulse generator 200;

the linkage control ports of the first quadrupole double-throw switch (S3), the second quadrupole double-throw switch (S4) and the third quadrupole double-throw switch (S5) are respectively connected with the housing interface (W) of the implantable pulse generator 200 through the housing port (W);

the linkage control port of the first diode double throw switch (S6) is respectively connected with a right atrium positive electrode port and a right atrium negative electrode port, and the right atrium positive/negative electrode port (RA-TIP or RA-RING) is respectively connected with a right atrium positive/negative electrode interface (RA-TIP or RA-RING) of the implantable pulse generator 200;

the linkage control port of the second double-pole double-throw switch (S7) is respectively connected with the right ventricle positive electrode port and the right ventricle negative electrode port, and the right ventricle positive/negative electrode port (RV-TIP or RV-RING) is respectively connected with the right ventricle positive/negative electrode interface (RV-TIP or RV-RING) of the implanted pulse generator 200;

the linkage control port of the third double-pole double-throw switch (S8) is respectively connected with the positive port of the left ventricle and the negative port of the left ventricle, and the positive/negative port (LV-TIP or LV-RING) of the left ventricle is respectively connected with the positive/negative interface (LV-TIP or LV-RING) of the left ventricle of the implanted pulse generator 200;

the defibrillation positive/negative port is respectively connected with the defibrillation positive interface (CD +) of the implantable pulse generator 200.

1) And when the linkage control ports (1, 2, 3) of the first three-pole double-throw switch (S11) are respectively connected with the communication switching ports (4, 5, 6) of the first three-pole double-throw switch (S11) in a one-to-one correspondence manner:

whether the linkage control ports (1, 2, 3, 4) of the first quadrupole double-throw switch (S3) are respectively connected with the communication switching ports (5, 6, 7, 8) of the first quadrupole double-throw switch (S3) in a one-to-one correspondence manner, or the linkage control ports (1, 2, 3, 4) of the first quadrupole double-throw switch (S3) are respectively connected with the communication switching ports (9, 10, 11, 12) of the first quadrupole double-throw switch (S3) in a one-to-one correspondence manner, the connection relationship between the linkage control port and the communication switching port of the first quadrupole double-throw switch (S3) can be known from fig. 1, and the test of the corresponding common mode or differential mode cannot be performed.

1.1) if the linkage control ports (1, 5) of the first diode double throw switch (S6) are respectively connected with the communication switching ports (2, 4) of the first diode double throw switch (S6) in a one-to-one correspondence manner, switching to a single-pole direct connection test mode of the right atrium.

1.2) if the linkage control ports (1, 5) of the first diode double throw switch (S6) are respectively connected with the communication switching ports (3, 6) of the first diode double throw switch (S6) in a one-to-one correspondence manner, switching to a single-pole non-direct connection test mode of the right atrium.

Similarly, when the linkage control ports (1, 2, 3) of the second three-pole double-throw switch (S10) (or the third three-pole double-throw switch (S9)) are respectively connected with the communication switching ports (4, 5, 6) of the second three-pole double-throw switch (S10) (or the third three-pole double-throw switch (S9)) in a one-to-one correspondence manner, the test mode switching state is the same as the test mode switching state when the linkage control ports (1, 2, 3) of the first three-pole double-throw switch (S11) are respectively connected with the communication switching ports (4, 5, 6) of the first three-pole double-throw switch (S11) in a one-to-one correspondence manner, and only the mode is switched to the single-pole direct connection test mode or the single-pole non-direct connection test mode of the right ventricle (or the left ventricle), which is not described in.

2) When the linkage control ports (1, 2, 3) of the first triple-pole double-throw switch (S11) are respectively connected with the communication switching ports (7, 8, 9) of the first triple-pole double-throw switch (S11) in a one-to-one correspondence manner, the linkage control ports (1, 2, 3, 4) of the first quadruple-pole double-throw switch (S3) are respectively connected with the communication switching ports (5, 6, 7, 8) of the first quadruple-pole double-throw switch (S3) in a one-to-one correspondence manner:

2.1) if the linkage control ports (1, 5) of the first diode double throw switch (S6) are respectively connected with the communication switching ports (2, 4) of the first diode double throw switch (S6) in a one-to-one correspondence manner, switching to a bipolar common mode direct connection test mode of the right atrium.

2.2) if the linkage control ports (1, 5) of the first diode double throw switch (S6) are respectively connected with the communication switching ports (3, 6) of the first diode double throw switch (S6) in a one-to-one correspondence manner, switching to a bipolar common mode non-direct connection test mode of the right atrium.

Similarly, when the mode of the second triple-pole double-throw switch (S10) (or the third triple-pole double-throw switch (S9)) for the double-pole common-mode direct connection test or the double-pole common-mode non-direct connection test is the same as the switching mode of the first triple-pole double-throw switch (S6), the description thereof is omitted.

3) When the linkage control ports (1, 2, 3) of the first triple-pole double-throw switch (S11) are respectively connected with the communication switching ports (7, 8, 9) of the first triple-pole double-throw switch (S11) in a one-to-one correspondence manner, and the linkage control ports (1, 2, 3, 4) of the first quadruple-pole double-throw switch (S3) are respectively connected with the communication switching ports (9, 10, 11, 12) of the first quadruple-pole double-throw switch (S3) in a one-to-one correspondence manner:

3.1) if the linkage control ports (1, 5) of the first diode double throw switch (S6) are respectively connected with the communication switching ports (2, 4) of the first diode double throw switch (S6) in a one-to-one correspondence manner, switching to a bipolar differential mode direct connection test mode of the right atrium.

3.2) if the linkage control ports (1, 5) of the first diode double throw switch (S6) are respectively connected with the communication switching ports (3, 6) of the first diode double throw switch (S6) in a one-to-one correspondence manner, switching to a bipolar differential mode non-direct connection test mode of the right atrium.

Similarly, when the mode of the second triple-pole double-throw switch (S10) (or the third triple-pole double-throw switch (S9)) is in the same manner as the switching mode of the first triple-pole double-throw switch (S6), the description thereof is omitted.

The utility model provides a connect switching module 350 that is used for switching equipment 300 of active implanted heart apparatus electromagnetic interference test still includes:

The test chamber selection unit includes:

a fourth three-pole double-throw switch (S2) for switching and selecting the corresponding test chamber according to the line on-off state of the fourth three-pole double-throw switch and the first three-pole double-throw switch (S11), the second three-pole double-throw switch (S10) and the third three-pole double-throw switch (S9).

The three-pole double-throw switch comprises a first linkage control port (1), a second linkage control port (2) and a third linkage control port (3);

the fourth three-pole double throw switch (S2) comprises three communicating switching port groups, each communicating switching port group comprising a first communicating switching port, a second communicating switching port and a third communicating switching port;

a first linkage control port (1) of the first three-pole double-throw switch (S11) is connected to a first communication switching port group of the fourth three-pole double-throw switch (S2) and a third communication switching port of a third communication switching port group, respectively; a second linkage control port (2) of the first three-pole double throw switch (S11) connected to a third communication switching port of a second communication switching port group of the fourth three-pole double throw switch (S2); -a third triple control port (3) of said first triple pole double throw switch (S11) is grounded;

a first linkage control port (1) of the second three-pole double-throw switch (S10) is connected to a first communication switching port group of the fourth three-pole double-throw switch (S2) and a second communication switching port of a third communication switching port group, respectively; a second linkage control port (2) of the second three-pole double throw switch (S10) connected to a second communication switching port of a second communication switching port group of the fourth three-pole double throw switch (S2); a third triple control port (3) of the second triple-pole double-throw switch (S10) is grounded;

a first linkage control port (1) of the third three-pole double-throw switch (S9) is connected to first communication switching ports of a first communication switching port group and a third communication switching port group of the fourth three-pole double-throw switch (S2), respectively; a second linkage control port (2) of the third three-pole double-throw switch (S9) connected to a first communication switching port of a second communication switching port group of the fourth three-pole double-throw switch (S2); a third triple-pole double-throw switch (S9) having a third triple-control port (3) connected to ground;

and the fourth three-pole double-throw switch (S2) is used for switching and selecting the corresponding test chamber according to the on-off state of the line of the communication switching port group of the linkage control port and the communication switching port group of the fourth three-pole double-throw switch.

Specifically, the fourth three-pole double-throw switch (S2) includes three communication switching port groups, i.e., a first communication switching port group, a second communication switching port group, and a third communication switching port group. Each communication switching port group includes a first communication switching port, a second communication switching port, and a third communication switching port.

A first linkage control port (1) of a first three-pole double-throw switch (S11) is respectively connected with a third communication switching port (6) of a first communication switching port group of a fourth three-pole double-throw switch (S2) and a third communication switching port (12) of the third communication switching port group in a one-to-one correspondence mode, a second linkage control port (2) of the first three-pole double-throw switch (S11) is connected with a third communication switching port (9) of a second communication switching port group of the fourth three-pole double-throw switch (S2), and a third linkage control port (3) of the first three-pole double-throw switch (S11) is grounded.

A first linkage control port (1) of a second three-pole double-throw switch (S10) is respectively connected with a second communication switching port (5) of a first communication switching port group of a fourth three-pole double-throw switch (S2) and a second communication switching port (11) of a third communication switching port group in a one-to-one correspondence mode, a second linkage control port (2) of the second three-pole double-throw switch (S10) is connected with a second communication switching port (8) of the second communication switching port group of the fourth three-pole double-throw switch (S2), and a third linkage control port (3) of the second three-pole double-throw switch (S10) is grounded.

A first linkage control port (1) of a third three-pole double-throw switch (S9) is respectively connected with a first linkage switching port (4) of a first linkage switching port group of a fourth three-pole double-throw switch (S2) and a first linkage switching port (10) of the third linkage switching port group in a one-to-one correspondence mode, a second linkage control port (2) of the third three-pole double-throw switch (S9) is connected with a first linkage switching port (7) of a second linkage switching port group of the fourth three-pole double-throw switch (S2), and a third linkage control port (3) of the third three-pole double-throw switch (S9) is grounded.

When the first linkage control port (1), the second linkage control port (2) and the third linkage control port (3) of the fourth three-pole double-throw switch (S2) are respectively connected with the third communication switching port (6) in the first communication switching port group, the third communication switching port (9) in the second communication switching port group and the third communication switching port (12) in the third communication switching port group of the fourth three-pole double-throw switch (S2) in a one-to-one correspondence manner, the equivalent tissue circuit 310 is correspondingly communicated with the right atrium positive/negative interface (RA-TIP or RA-RING) of the implantable pulse generator 200 through the right atrium positive/negative port (RA-TIP or RA-RING), the right atrium is selected to be tested, and then switched to a target test mode of the right atrium according to the selection of the single pole, the double pole common mode and the differential mode, the aim of carrying out corresponding test in the right atrium target test mode is fulfilled.

When the first linkage control port (1), the second linkage control port (2) and the third linkage control port (3) of the fourth three-pole double-throw switch (S2) are respectively connected with the second communication switching port (5) in the first communication switching port group, the second communication switching port (8) in the second communication switching port group and the second communication switching port (11) in the second communication switching port group of the fourth three-pole double-throw switch (S2) in a one-to-one correspondence manner, the equivalent tissue circuit 310 is correspondingly communicated with the right ventricle positive/negative electrode interface (RV-TIP or RV-RING) of the implantable pulse generator 200 through the right ventricle positive/negative electrode port (RV-TIP or RV-RING), the right ventricle is selected to be tested, and then switched to the target test mode of the right ventricle according to the selection of the single pole/double pole and common mode/differential mode, the aim of carrying out corresponding test in the target test mode of the right ventricle is achieved.

When the first linkage control port (1), the second linkage control port (2) and the third linkage control port (3) of the fourth three-pole double-throw switch (S2) are respectively connected with the first communication switching port (4) in the first communication switching port group, the first communication switching port (7) in the second communication switching port group and the first communication switching port (10) in the first communication switching port group of the fourth three-pole double-throw switch (S2) in a one-to-one correspondence manner, the equivalent tissue circuit 310 is correspondingly communicated with the left ventricle positive/negative electrode interface (LV-TIP or LV-RING) of the implantable pulse generator 200 through the left ventricle positive/negative electrode port (LV-TIP or LV-RING), the left ventricle is selected to be tested, and then the target test mode of the left ventricle is switched according to the selection of the single pole/double pole, common mode/differential mode, the aim of carrying out corresponding test in the target test mode of the left ventricle is fulfilled.

As shown in fig. 2 and 3, the present invention provides another embodiment of a switching device 300 for electromagnetic interference testing of an active implantable cardiac device, comprising:

the connection port further includes: a first port (F), a second port (G), a third port (H), a fourth port (I), a fifth port (J);

the equivalent tissue circuit 310 includes: a second interface (F), a second interface (G), a third interface (H), a fourth interface (I), a fifth interface (J), a sixth interface (K), a seventh interface (E), an eighth interface (D) and a ninth interface (C);

a second interface (F) of the equivalent organization circuit 310 is connected to the first port (F), a second interface (G) of the equivalent organization circuit 310 is connected to the second port (G), a third interface (H) of the equivalent organization circuit 310 is connected to the third port (H), a fourth interface (I) of the equivalent organization circuit 310 is connected to the fourth port (I), and a fifth interface (J) of the equivalent organization circuit 310 is connected to the fifth port (J);

the sixth interface (K) of the equivalent tissue circuit 310 is connected to the first oscilloscope 600;

the seventh interface (E) of the equivalent tissue circuit 310 is connected to the suppressed signal generator 800;

the eighth interface (D) of the equivalent tissue circuit 310 is connected to the second oscilloscope 500;

the ninth interface (C) of the equivalent tissue circuit 310 is connected to the test signal generator 400.

The equivalent tissue circuit 310 is connected to the first oscilloscope 600, the second oscilloscope 500, and the test signal generator 400.

The equivalent tissue circuit 310 is connected to the first oscilloscope 600, the second oscilloscope 500, the suppression signal generator 800, and the test signal generator 400.

Specifically, as shown in fig. 2, 3 and 4, the linkage control port of the first diode double throw switch (S6) is connected to the right atrial positive interface of the implantable pulse generator 200 through the right atrial positive port (RA-Tip), and is connected to the right atrial negative interface of the implantable pulse generator 200 through the right atrial negative port (RA-Ring). The linkage control port of the second double-pole double-throw switch (S7) is connected to the right ventricular positive interface of the implantable pulse generator 200 through the right ventricular positive port (RV-Tip), and is connected to the right ventricular negative interface of the implantable pulse generator 200 through the right ventricular negative port (RV-Ring). The linkage control port of the third double-pole double-throw switch (S8) is connected with the left ventricle positive interface of the implanted pulse generator 200 through the left ventricle positive port (LV-Tip), and is connected with the left ventricle negative interface of the implanted pulse generator 200 through the left ventricle negative port (LV-Ring). The defibrillation positive port (CD +) is connected with the defibrillation positive interface (CD +) of the implanted pulse generator 200, and the defibrillation negative port (CD-) is connected with the defibrillation negative interface (CD-) of the implanted pulse generator 200.

The equivalent tissue circuit 310 is connected to the first oscilloscope 600 through the sixth interface (K) and connected to the suppression signal generator 800 through the seventh interface (E). Is connected to the second oscilloscope 500 through the eighth interface (D) and is connected to the test signal generator 400 through the ninth interface (C). The detection control unit 350 (not shown in the figure) is connected to the first oscilloscope 600 and the second oscilloscope 500, and is configured to switch a connection line between the implanted pulse generator 200 and the equivalent circuit 310 according to a test mode selected by a user, and obtain a test result in a corresponding test mode according to data read from the first oscilloscope 600 and the second oscilloscope 500 after applying electromagnetic interference. The connection test control module 320 is coupled to the implantable pulse generator 200. The test signal generator 400 generates an interference signal (i.e., a test signal), the test signal generator 400 transmits the interference signal to the equivalent tissue circuit 310 of the switching device 300 for the induced current density test of the implantable cardiac device, and then transmits the interference signal to the implantable pulse signal generator 200 through the equivalent tissue circuit 310, because the equivalent tissue circuit 310 is connected with the first oscilloscope 600 and the second oscilloscope 500, whether the implantable pulse signal generator 200 is interfered or not is observed through the oscilloscope, the processing terminal 900 is connected with the test signal generator 400 to control the distribution of the interference signal, and the processing terminal 900 is further connected with the oscilloscope to observe and read data on the oscilloscope. The switching device 300 for electromagnetic interference testing of an active implantable cardiac instrument is provided with a control 100 (e.g., a paddle, a toggle switch, or a handle, as shown in fig. 5) for switching a selected test mode, and the shift position of the control 100 is labeled with a corresponding test mode name. The processing terminal 900 is further provided with a display interface (not shown in the figure) for displaying the test mode selected by the user, the user manually adjusts the required test mode and observes whether the currently selected test mode displayed on the display interface meets the test mode required by the target, if yes, the measured data are read from the first oscilloscope 600 and the second oscilloscope 500, and the test result in the selected test mode is obtained by calculation according to the read data. According to the manual operation adjustment of the user, the corresponding test items, such as the test items in the unipolar mode, the bipolar common mode, the bipolar differential mode, and the like, are displayed at the test item state of the display interface, which is not described in detail herein.

In the electromagnetic compatibility detection process of the implantable pulse generator 200 (implantable cardioverter defibrillator and implantable cardiac pacemaker with defibrillation function), since the detection process involves testing of a plurality of interfaces of the implantable pulse generator 200, such as an atrium, a ventricle, a defibrillation interface, and a plurality of test loops (such as differential mode/common mode tests), connecting and switching lines are performed between the equivalent tissue circuit 310 and the plurality of interfaces of the implantable pulse generator 200, the manual wiring operation is cumbersome and prone to errors, and the reliability of the detection result is affected due to poor contact of the connecting lines caused by a large number of connecting lines, and error troubleshooting is also inconvenient. Therefore, how to carry out detection tests more simply, conveniently and reliably on the basis of meeting the requirements of ISO14708-2 and ISO14708-6 standards, reduce the detection complexity and improve the integrated detection efficiency is a problem to be solved urgently.

The utility model is suitable for a test of relevant pace-making perception interface among the Pacemaker (Pacemaker), ICD (implantable cardioverter defibrillator), CRT-P (three chamber Pacemaker), CRT-D equipment (the heart resynchronization therapy Pacemaker that has the defibrillator function). Before the test starts, the corresponding ports of the test control module 300 are connected to all interfaces of the Device Under Test (DUT), i.e. the implanted pulse generator 200, via banana plugs, as defined, and the other ports are connected to the interfaces of the equivalent organizational circuit 310 in a manner defined by the standard. And (4) dialing the toggle switches corresponding to the test channels to be tested (the test channels comprise the right atrium, the right ventricle and the left ventricle) to be directly connected, and dialing the test channels not to be tested to be directly connected or 100K omega grade as required. And rotating the wave band switch to the corresponding test channel to be tested. And setting the common mode/differential mode button switch and the single-pole/double-pole button switch at the position of the test control module 300 according to the test mode and the name of the test mode, and dialing to the corresponding position to complete the construction of the corresponding test loop.

Note that one: the three differential/common mode button switches must be linked, that is, the directions of the 3 differential/common mode button switches (the differential/common mode button switch corresponding to the right atrium, the differential/common mode button switch corresponding to the right ventricle, and the differential/common mode button switch corresponding to the left ventricle) in the same column must be consistent.

Attention is paid to the second step: the monopolar/bipolar toggle switches must be interlocked, i.e., the directions of the 3 monopolar/bipolar toggle switches (monopolar/bipolar toggle switch for right atrium, monopolar/bipolar toggle switch for right ventricle, monopolar/bipolar toggle switch for left ventricle) in the same column must be consistent.

The first diode double-throw switch (S6), the second diode double-throw switch (S7) and the third diode double-throw switch (S8) are used for switching to a direct connection test mode when the linkage control switch of the first diode double-throw switch is communicated with the direct connection communication switching port and switching to a non-direct connection test mode when the linkage control switch of the first diode double-throw switch is communicated with the non-direct connection communication switching port;

the first quadrupole double-throw switch (S3), the second quadrupole double-throw switch (S4) and the third quadrupole double-throw switch (S5) are used for switching to a direct-connection test mode when the linkage control switch of the first quadrupole double-throw switch is communicated with the direct-connection communication switching port and switching to a non-direct-connection test mode when the linkage control switch of the first quadrupole double-throw switch is communicated with the non-direct-connection communication switching port;

the first, second, and third three-pole double-throw switches (S11, S10, S9) are used to switch to a bipolar test mode when their gang control switches are communicated with a bipolar communication switching port, and to switch to a unipolar test mode when their gang control switches are communicated with a unipolar communication switching port.

Attention is paid to the third step: when the single pole/double pole button switch is switched to single pole, the differential mode/common mode button switch.

The switching of the connection lines between the implantable pulse generator 200 and the equivalent tissue circuit 310200 in various test items is simplified by the switching of the double-throw switches (such as S2, S4, S5, S6, S7, S8, S9, S11 and S12) in the switching device 300 for the electromagnetic interference test of the active implantable cardiac instrument, and the problem that the reliability of the detection result is influenced due to poor contact of the connection lines caused by a large number of the connection lines is avoided. Since the gears of the control member 100 are labeled with corresponding test mode names, by identifying the corresponding ports (e.g., ports RA-Tip, RA-Ring, RV-Tip, RV-Ring, LV-Tip, LV-Ring, CD-, CD +) without manually comparing the circuit diagram for complicated test line connections and switching, the possibility of incorrect operation is greatly reduced. And through the switch, the port and the display interface for displaying the test mode selected by the user, the required test modes can be manually switched in a one-to-one correspondence manner by the user, and whether the currently selected test mode displayed on the display interface meets the test mode required by the target or not is observed, so that the inspection of the connecting line is realized, and the reliability is greatly improved.

Through the utility model discloses a switching equipment 300 for active implanted heart apparatus electromagnetic interference test, for the tester accomplishes the wiring according to the experimental connection picture, and whether the experimental connection mode of naked eye judgement is correct, the utility model discloses only need the tester to correspond according to the test item name and stir corresponding double-throw switch, realize the line connection between implanted impulse generator 200 and the equivalent tissue circuit 310, and the swift switching of the test item that interconnecting link corresponds, greatly reduced the operation degree of difficulty and loaded down with trivial details degree, can reduce the wiring operation repeatedly, greatly reduced wiring and the correct time of inspection wiring. And only need judge whether correct correspondence between test item and the change over switch can, reduce the work load that the tester examined the interconnecting link.

It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A switching apparatus for electromagnetic interference testing of an active implantable cardiac device, comprising:

the equivalent tissue circuit is used for simulating human tissues;

2. The switching apparatus for active implantable cardiac device electromagnetic interference testing of claim 1, wherein:

the chamber connection mode switching unit comprises a right atrium connection mode switching subunit, a right ventricle connection mode switching subunit and a left ventricle connection mode switching subunit;

3. The switching apparatus for active implantable cardiac device electromagnetic interference testing of claim 2, wherein:

the first single-double pole connection switching subunit comprises a first three-pole double-throw switch and a connection port;

4. The switching device for active implantable cardiac device electromagnetic interference testing of claim 3, wherein:

and the equivalent tissue circuit is connected with the first oscilloscope, the second oscilloscope and the test signal generator.

5. The switching device for active implantable cardiac device electromagnetic interference testing of claim 4, wherein:

and the equivalent tissue circuit is connected with the first oscilloscope, the second oscilloscope, the suppression signal generator and the test signal generator.

6. The switching device for active implantable cardiac device electromagnetic interference testing of claim 5, wherein:

the connection port includes: a right atrium positive/negative port, a right ventricle positive/negative port, a left ventricle positive/negative port, a defibrillation positive/negative interface and a housing port;

7. The switching apparatus for active implantable cardiac device electromagnetic interference testing of claim 6, wherein the connection switching module further comprises:

8. The switching apparatus for active implantable cardiac device electromagnetic interference testing of claim 7, wherein the test chamber selection unit comprises:

and the fourth three-pole double-throw switch is used for switching and selecting the corresponding test chamber according to the on-off states of the fourth three-pole double-throw switch and the lines of the first three-pole double-throw switch, the second three-pole double-throw switch and the third three-pole double-throw switch.

9. The switching apparatus for active implantable cardiac device electromagnetic interference testing of claim 8, wherein:

the three-pole double-throw switch comprises a first linkage control port, a second linkage control port and a third linkage control port;

10. The switching apparatus for active implantable cardiac device electromagnetic interference testing of claim 9, wherein:

the connection port further includes: a first port, a second port, a third port, a fourth port, a fifth port;

11. A switching system for electromagnetic interference testing of an active implantable cardiac device, wherein the switching device for electromagnetic interference testing of an active implantable cardiac device according to any one of claims 1-10 is applied, comprising the switching device for electromagnetic interference testing of an active implantable cardiac device, and further comprising:

the equivalent tissue circuit is used for simulating human tissues;

12. The switching system for active implantable cardiac device electromagnetic interference testing of claim 11, further comprising:

the suppression signal generator is connected with the equivalent tissue circuit and is used for generating an analog pulse signal; the analog pulse signal is a heart pulse signal generated by an analog human body.