CN104623804B - One kind treats ARR armarium - Google Patents
One kind treats ARR armarium Download PDFInfo
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- CN104623804B CN104623804B CN201510086551.9A CN201510086551A CN104623804B CN 104623804 B CN104623804 B CN 104623804B CN 201510086551 A CN201510086551 A CN 201510086551A CN 104623804 B CN104623804 B CN 104623804B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/362—Heart stimulators
- A61N1/3621—Heart stimulators for treating or preventing abnormally high heart rate
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/362—Heart stimulators
- A61N1/3621—Heart stimulators for treating or preventing abnormally high heart rate
- A61N1/3624—Heart stimulators for treating or preventing abnormally high heart rate occurring in the atrium, i.e. atrial tachycardia
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Abstract
The present invention provides and treats ARR armarium, including：Microprocessor and numeral/analog module；Wherein, main control unit setting equipment is in DDD (R) mode of operation：In PVARP, after receiving the message that perception control/amplifying unit perceives atrial event, phase to time control unit sending signal between main control unit setting PANP, control the first timing unit to enter timing mode, when a length of PANP between the phase；If escape interval overflows in the phase between PANP of generation after ventricular pacemaking, main control unit, to time control unit sending signal, controls the second timing unit setting atrioventricular interval as lower ventricular pace escape interval；If escape interval overflows outside the phase between PANP of generation after ventricular pacemaking, main control unit notifies pace-making control/generation unit to provide pacemaker impulse to pace-making control/generation unit and time control unit sending signal, controls the second timing unit setting atrioventricular interval as lower ventricular pace escape interval.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to medical equipment for treating arrhythmia.
Background
The cardiac medical equipment (cardiac pacemaker) is an electronic therapeutic apparatus implanted in the body, which delivers electric pulses powered by a battery through a pulse generator, stimulates the cardiac muscle contacted by an electrode through the conduction of an electrode lead, and leads the heart to excite and contract, thereby achieving the purpose of treating the cardiac dysfunction caused by certain arrhythmia.
DDD type medical devices are capable of sensing and pacing the atria and ventricles. Improper pacing may cause some adverse events to occur. Arrhythmia such as atrial tachycardia may be induced if an atrial pacing pulse occurs during an atrial vulnerable period. This phenomenon often occurs in the following cases:
in dual chamber tracking modes such as DDD or DDDR, this phenomenon often occurs near atrial sensed events during the atrial refractory period. To prevent this, Non-Competitive Atrial Pacing (NCAP) has been introduced in the conventional practice. In DDD or DDDR operating modes, an atrial sensed event within a refractory period will turn on an NCAP interval if the function is on. If the atrial pacing event expected to occur falls within the NCAP interval, delaying the atrial pacing event expected to occur by the end of the NCAP interval; at the same time, if atrial pacing is delayed, the timing of the ventricular events will be affected. To maintain the stability of the ventricular heart rate, the atrioventricular interval (PAV) will be shortened. However, when practiced conventionally, this may result in excessively short atrioventricular intervals, a higher minimum rate, and a longer atrial refractory period following ventricular pacing, with a ventricular rate below the minimum rate.
Disclosure of Invention
The invention aims to provide a medical device for treating arrhythmia, which aims to solve the problem that atrial pacing in a vulnerable period of an atrium may induce atrial tachycardia in the prior art.
To solve the above technical problem, the present invention provides a medical apparatus for treating arrhythmia, comprising: the system comprises a microprocessor and a digital/analog module connected with the microprocessor; the microprocessor comprises a main control unit and a time control unit; the digital/analog module comprises a pacing control/generation unit and a sensing control/amplification unit, and the time control unit at least comprises a first timing unit and a second timing unit; wherein,
the main control unit sets the medical device for treating arrhythmia in DDD (R) working mode: after receiving a message that the sensing control/amplification unit senses an atrial event in a post-ventricular atrial refractory period, the main control unit sets a post-atrial-sensing non-pacing interval and sends a signal to the time control unit to control the first timing unit to enter a timing mode, wherein the duration of the non-pacing interval is the post-atrial-sensing non-pacing interval; if escape interval overflow after ventricular pacing occurs in the atrial sensed non-pacing interval, the main control unit sends a signal to a time control unit and controls the second timing unit to set an atrioventricular interval as a next ventricular pacing escape interval; and if escape interval overflow after ventricular pacing occurs outside the atrial sensed non-pacing interval, the main control unit sends a signal to the pacing control/generating unit and the time control unit to inform the pacing control/generating unit to deliver a pacing pulse, and controls the second timing unit to set the atrioventricular interval as the next ventricular pacing escape interval.
Furthermore, in the medical device for treating arrhythmia, after receiving a signal that the sensing control/amplification unit senses an atrial event in an atrial refractory period behind a ventricle, the main control unit obtains information whether a non-pacing interval function after atrial sensing is set to be on, if the non-pacing interval function after atrial sensing is on, the main control unit sets a non-pacing interval after atrial sensing and sends a signal to the time control unit to control the first timing unit to enter a timing mode, and the duration is the non-pacing interval after atrial sensing. .
Further, in the medical device for treating arrhythmia, if a signal of an atrial event in an atrial refractory period after sensing the ventricle is sensed by the sensing control/amplification unit is received again in the non-pacing interval after sensing the atrium, the main control unit sends a signal to the time control unit to control the first timing unit to restart timing, and the duration is the non-pacing interval after sensing the atrium.
Further, in the arrhythmia treatment medical device, the start time of the non-pacing interval after the atrial sensing is the time when the atrial event is sensed.
Further, in the medical device for treating arrhythmia, when the main control unit sets a non-pacing interval after atrial sensing, the type flag of the interval is set at the same time.
Further, in the arrhythmia treatment medical device, the main control unit clears the type flag of the interval when the non-pacing interval expires after the atrial sensing.
Further, in the medical device for treating arrhythmia, if the type mark of the interval is set, the mark is in a non-pacing interval after atrial sensing; otherwise it is marked as being outside the non-pacing interval after atrial sensing.
Further, in the medical device for treating arrhythmia, after receiving the message that the sensing control/amplification unit senses an atrial event outside the post-ventricular atrial refractory period, the main control unit sends a message to the time control unit, and controls the timing duration of the second timing unit to be the atrial-sensed post-ventricular interval as the escape interval.
Further, in the medical device for treating arrhythmia, when the atrioventricular interval is set as an escape interval after atrial sensing, the main control unit sends a message to the time control unit to terminate the timing of the first timing unit.
Further, in the arrhythmia treatment device, if the post-ventricular-pacing escape interval expires during the post-atrial-sensing non-pacing interval, the master control unit marks a virtual atrial pacing event and inhibits an anticipated atrial pacing; if the escape interval expires after ventricular pacing outside the non-pacing interval after atrial sensing, the main control unit marks a real atrial pacing event and sends a signal to notify the pacing control/generation unit to deliver an atrial pacing pulse.
Further, in the arrhythmia treatment medical device, the main control unit sets a next ventricular pacing escape interval starting from the virtual atrial pacing event when the virtual atrial pacing event is marked.
Further, in the arrhythmia treatment medical device, when the mark is a real atrial pacing event, the main control unit sets a next ventricular pacing escape interval by taking the real atrial pacing event as a starting point.
The medical equipment for treating arrhythmia provided by the invention has the following beneficial effects: by introducing a non-pacing interval following atrial sensing, atrial tachycardia caused by pacing the atrium during an atrial vulnerable period can be avoided. Compared with the traditional method, the problem of too short atrioventricular interval is avoided by introducing the virtual atrial pacing interval, and when the atrial refractory period is longer and the lowest limit frequency is larger after the ventricle, the ventricular frequency cannot be lower than the lowest limit frequency, so that the heart rate stability is maintained, and the good effect is achieved when the heart rate control method is applied to a defibrillator and a pacemaker.
Drawings
FIG. 1 is a schematic diagram of a medical device for treating cardiac arrhythmias in accordance with a preferred embodiment of the present invention;
FIG. 2 is a flow chart of the operation of a medical device for treating cardiac arrhythmias in accordance with a preferred embodiment of the present invention;
fig. 3 is a functional timing diagram of a medical device for treating cardiac arrhythmias in accordance with a preferred embodiment of the present invention.
Detailed Description
The medical device for treating arrhythmia according to the present invention will be described in further detail with reference to the accompanying drawings and embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
Referring to fig. 1, which is a schematic structural diagram of a medical apparatus for treating arrhythmia according to a preferred embodiment of the present invention, the present invention can be effectively applied thereto, and the diagram should be regarded as an example of the type of device for implementing the present invention, and is not meant to be limiting.
As shown in FIG. 1, the present invention provides a medical device for treating arrhythmia, which comprises a microprocessor 8 and a digital/analog module 9 connected thereto, wherein the sensing of the atria and ventricles is always on, no matter in any mode. This makes it easy to open an atrial non-pacing interval following a ventricular event to avoid atrial tachycardia caused by pacing the atrium during the atrial vulnerable period. The selection and implementation of the microprocessor 8 are not limited. The digital/analog module 9 needs to realize the perception of external signals, needs to be able to send signals to act on the outside, and needs to be able to perform data information interaction with the outside.
Further, the microprocessor 8 includes a main control unit 1, a time control unit 2 and a data/information interaction interface 3, and the time control unit 2 at least includes a first timing unit 11 and a second timing unit 12. The main control unit 1 receives and processes event occurrence messages sent from the digital/analog module 9, and controls events to be generated. The main control unit 1 can selectively implement time-related control functions such as timing and timing through the time control unit 2, for example, the time control unit 2 can capture and record the time of an event, and can also control the accurate occurrence time of an event to be occurred. For example, after receiving a signal of an atrial event, the main control unit 1 sets a post-atrial-sensed non-pacing interval and sends the signal to the time control unit 2, and sets the first timing unit 11 as the working mode of the timer, wherein the timed duration is the post-atrial-sensed non-pacing interval. As another example, the second timing unit 12, which functions as a timer, is an atrioventricular interval that is used as the next ventricular pacing escape interval to provide an accurate time for a ventricular pacing event to occur. The data/information interaction interface 3 realizes the interaction of data or information and the like between the device and other modules. The data/information interaction interface 3 may be a common I/O interface, or may be a serial or parallel data transmission module. In this embodiment, the data/information interaction interface 3 is capable of receiving sensed event information, issuing a pacing event request, serial data interaction, clock data interaction, and the like. In addition, the device of the present invention may further include other units, for example, the main control unit 1 further includes a control unit 10 (for short, a PANP control unit 10) for controlling a post-atrial-sensing non-pacing interval function, when receiving a signal of an atrial event, the main control unit 1 obtains information whether the PANP control unit 10 is already turned on, if the PANP control unit is turned on, the main control unit 1 sets a post-atrial-sensing non-pacing interval and sends a signal to the time control unit 2, and controls the first timing unit 11 to enter a timing mode, where the duration is the post-atrial-sensing non-pacing interval.
Further, the digital/analog module 9 includes a data/information interaction interface 4, a pacing control/generation unit 5, a sensing control/amplification unit 6 and a program control unit 7. The data/information interaction interface 4 can interact with the corresponding data/information interaction interface 3, although the implementation manner may be different from that. The pace-making control/generation unit 5 receives the pace-making request from the microprocessor 8 and generates a signal with required intensity to act on the outside, and meanwhile, bears a small part of control functions, and the difference is generated according to the difference of acted objects, the intensity, the type and the like of the signal. The sensing control/amplification unit 6 is capable of capturing and distinguishing external real signals and communicating them to the microprocessor 8, such as cardiac signals, and needs to be able to amplify the signals. The program control unit 7 can interact with the outside world, such as a user.
As shown in fig. 2, the main control unit 1 of the microprocessor sets the medical device for treating arrhythmia in ddd (r) operation mode, and the sensing control/amplification unit 5 of the digital/analog module 9 provides the sensing function of cardiac signal, and immediately sends a signal to the main control unit 1 when sensing an atrial sensing event (Ar) in the post-ventricular atrial refractory period. After receiving the signal, the main control unit 1 obtains the opening and closing information of the panap function from the panap control unit 10, if the current panap control unit 10 is turned on, the main control unit 1 sets the panap from the Ar occurrence time, and controls the first timing unit to enter the timing mode, the duration is the panap, if the panap control unit 10 is not turned on, the main control unit 1 may not do any processing. Specifically, during the interval, if a new Ar event occurs, the main control unit controls the first timing unit to restart timing, and the duration is PANP. When an escape interval overflows after Ventricular Pacing (VP), whether the current time is in the PANP is judged, if yes, the main control unit 1 cancels an Atrial Pacing (AP) event expected to occur, does not send a signal to notify the pacing control/generation unit 5 to deliver an atrial pacing pulse, marks a Virtual Atrial Pacing (VAP) event, opens an atrioventricular interval (PAV interval), sends a signal to the time control unit 2, controls the duration of the second timing unit 12 to be the atrioventricular interval, and serves as a next ventricular pacing escape interval, if not, sends a signal to notify the pacing control/generation unit 5 to deliver a pacing pulse according to the expected occurrence of the AP event, opens the PAV interval, sends a signal to the time control unit 2, and controls the duration of the second timing unit 12 to be the atrioventricular interval, and serves as the next ventricular pacing escape interval.
As further shown in FIG. 3, at sequence time (r), upon receiving a message of an atrial sense event (Ar) within a post-ventricular atrial refractory period (PVARP), the master control unit 1 turns on a post-atrial-sense non-pacing interval (PANP) while marking a PANP interval type flag.
At the sequence moment, when an atrial sensed event (AS) occurs outside the PANP and a post-ventricular escape interval (AEI for short, also called post-ventricular pacing escape interval) expires, the main control unit 1 sets the post-atrial sensed atrioventricular interval (SAVI) AS the escape interval and sends a message to the time control unit 2 to control the timing duration of the second timing unit 12 AS the post-atrial sensed atrioventricular interval; if the atrial sensed event is sensed within the atrial sensed posterior ventricular interval, the atrial sensed event is regarded as an atrial sensed event (Ar) within the atrial ventricular interval SAVI, and the main control unit 1 does not turn on the atrial sensed posterior non-pacing interval.
At sequence time, when no ventricular sense event is present in the SAVI, and the SAVI expires, main control unit 1 notifies pacing control/generation unit 5 to deliver Ventricular Pacing (VP).
At the time of the sequence, an atrial sense event occurs in the PANP and PVARP, and the main control unit 1 controls the first timing unit 11 to restart timing for the duration of the PANP interval.
At sequence time, AEI expiration occurs outside of PANP, main control unit 1 notifies pacing control/generation unit 5 to deliver Atrial Pacing (AP) and controls the duration of second timing device 12 to be the atrial-ventricular interval (PAVI) after atrial pacing as an escape interval.
At the time of the sequence, upon expiration of PAVI, the main control unit 1 notifies the pacing control/generation unit 5 to deliver VP.
At sequence time (c), AEI expires within the papp, master control unit 1 does not instruct pacing control/generation unit 5 to deliver AP, however master control unit 1 controls second timing device 12 for an escape interval (referred to herein as VAP occurring), at which time master control unit 1 clears the papp interval type flag.
At the moment of the sequence of (b), PAVI is the valid atrioventricular escape interval, at the expiration of which the main control unit 1 informs the pacing control/generation unit 5 to deliver VP.
Therefore, by introducing PANP, the atrial tachycardia caused by pacing the atrium in the vulnerable period of the atrium can be avoided. Compared with the traditional method, the problem of too short PAV is avoided by introducing the VAP event, and when the PVARP is longer and the lowest limit frequency is larger, the ventricular frequency cannot be lower than the lowest limit frequency, so that the heart rate stability is maintained.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (12)
1. A medical device for treating cardiac arrhythmia, comprising: the system comprises a microprocessor and a digital/analog module connected with the microprocessor; the microprocessor comprises a main control unit and a time control unit; the digital/analog module comprises a pacing control/generation unit and a sensing control/amplification unit, and the time control unit at least comprises a first timing unit and a second timing unit; wherein,
the main control unit sets the medical device for treating arrhythmia in DDD (R) working mode: after receiving a message that the sensing control/amplification unit senses an atrial event in a post-ventricular atrial refractory period, the main control unit sets a post-atrial-sensing non-pacing interval and sends a signal to the time control unit to control the first timing unit to enter a timing mode, wherein the duration of the non-pacing interval is the post-atrial-sensing non-pacing interval; if escape interval overflow after ventricular pacing occurs in the atrial sensed non-pacing interval, the main control unit sends a signal to a time control unit and controls the second timing unit to set an atrioventricular interval as a next ventricular pacing escape interval; and if escape interval overflow after ventricular pacing occurs outside the atrial sensed non-pacing interval, the main control unit sends a signal to the pacing control/generating unit and the time control unit to inform the pacing control/generating unit to deliver a pacing pulse, and controls the second timing unit to set the atrioventricular interval as the next ventricular pacing escape interval.
2. The medical apparatus for treating arrhythmia according to claim 1, wherein upon receiving the signal that the sensing control/amplification unit senses an atrial event in the atrial refractory period after the ventricle, the main control unit obtains information whether the function of the post-atrial-sensing non-pacing interval is set to on, and if so, the main control unit sets a post-atrial-sensing non-pacing interval and sends a signal to the time control unit to control the first timing unit to enter the timing mode for the post-atrial-sensing non-pacing interval.
3. The medical apparatus for treating arrhythmia according to claim 1, wherein in the post-atrial-sensing non-pacing interval, if the sensing control/amplification unit receives a signal of an atrial event in the post-ventricular atrial refractory period again, the main control unit sends a signal to the timing control unit to control the first timing unit to restart the timing for the post-atrial-sensing non-pacing interval.
4. The medical device for treating arrhythmia according to claim 1, where the start time of the non-pacing interval after atrial sensing is the time at which an atrial event is sensed.
5. The medical device of claim 1, wherein the main control unit sets a post-atrial-sensed non-pacing interval while setting a type flag for the post-atrial-sensed non-pacing interval.
6. The medical device of claim 5, wherein the main control unit clears the type flag for the post-atrial-sensed non-pacing interval upon expiration of the post-atrial-sensed non-pacing interval.
7. The medical device of claim 5, wherein if the type of post-atrial-sensed non-pacing interval is flagged, then the flag is within a post-atrial-sensed non-pacing interval; otherwise it is marked as being outside the non-pacing interval after atrial sensing.
8. The medical apparatus for treating arrhythmia according to claim 1, wherein the main control unit sends a message to the time control unit after receiving the message that the sensing control/amplification unit senses an atrial event outside the post-ventricular atrial refractory period, and controls the timing duration of the second timing unit to be an atrial-sensed post-ventricular interval as an escape interval.
9. The medical device of claim 8, wherein the master control unit sends a message to the time control unit to terminate the first timing unit timing when the atrioventricular interval is set to the escape interval after atrial sensing.
10. The medical device of claim 1, wherein the master control unit marks a virtual atrial pacing event and inhibits an anticipated occurrence of atrial pacing if the post-ventricular-pacing escape interval expires during the post-atrial-sensing non-pacing interval; if the escape interval expires after ventricular pacing outside the non-pacing interval after atrial sensing, the main control unit marks a real atrial pacing event and sends a signal to notify the pacing control/generation unit to deliver an atrial pacing pulse.
11. The medical device of claim 10, wherein the master control unit sets a next ventricular pacing escape interval starting with the virtual atrial pacing event when tagged as a virtual atrial pacing event.
12. The medical device of claim 10, wherein the master control unit sets a next ventricular pacing escape interval starting with a real atrial pacing event when tagged as a real atrial pacing event.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510086551.9A CN104623804B (en) | 2015-02-17 | 2015-02-17 | One kind treats ARR armarium |
| PCT/CN2016/070513 WO2016131350A1 (en) | 2015-02-17 | 2016-01-08 | Medical device for treating cardiac arrhythmia |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510086551.9A CN104623804B (en) | 2015-02-17 | 2015-02-17 | One kind treats ARR armarium |
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| CN104623804A CN104623804A (en) | 2015-05-20 |
| CN104623804B true CN104623804B (en) | 2017-03-01 |
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| CN201510086551.9A Active CN104623804B (en) | 2015-02-17 | 2015-02-17 | One kind treats ARR armarium |
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| CN (1) | CN104623804B (en) |
| WO (1) | WO2016131350A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107335141B (en) | 2015-02-06 | 2021-04-02 | 创领心律管理医疗器械（上海）有限公司 | Cardiac pacing system and medical equipment for treating arrhythmia |
| CN104623805B (en) * | 2015-02-17 | 2017-03-01 | 上海微创医疗器械（集团）有限公司 | One kind treats ARR armarium |
| CN104623804B (en) * | 2015-02-17 | 2017-03-01 | 上海微创医疗器械（集团）有限公司 | One kind treats ARR armarium |
| BR102015016843A2 (en) * | 2015-06-17 | 2016-02-02 | Medtronic Inc | implantable medical device |
| CN106110502B (en) * | 2016-06-07 | 2018-08-24 | 创领心律管理医疗器械（上海）有限公司 | The Medical Devices of phase driving frequency response between PR |
| CN105999549B (en) * | 2016-06-07 | 2018-10-16 | 创领心律管理医疗器械（上海）有限公司 | Reduce and diagnose the Medical Devices of unnecessary cardiac pacing |
| CN107480413B (en) * | 2016-06-07 | 2020-08-04 | 创领心律管理医疗器械（上海）有限公司 | Medical equipment for treating arrhythmia and atrioventricular interval searching method thereof |
| CN107376120B (en) * | 2017-06-27 | 2020-08-21 | 创领心律管理医疗器械（上海）有限公司 | Dual-cavity on-demand pacing implementation method |
| CN109793987B (en) * | 2019-03-26 | 2023-01-20 | 创领心律管理医疗器械（上海）有限公司 | Cardiac pacing system |
| CN112870554B (en) * | 2021-02-04 | 2024-12-13 | 丹源医学科技(杭州)有限公司 | A pulse stimulation device capable of effectively avoiding pacing during atrial vulnerable period |
| CN115887923B (en) * | 2021-08-16 | 2025-09-12 | 丹源医学科技(杭州)有限公司 | An implantable medical device and system capable of effectively avoiding ventricular vulnerable period pacing |
| CN114306937B (en) * | 2022-01-10 | 2022-06-28 | 丹源医学科技(杭州)有限公司 | Atrial dynamic overdrive pacing device |
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| US4624260A (en) * | 1985-05-07 | 1986-11-25 | Intermedics, Inc. | Pacemaker with conditional atrial tracking capability |
| US4951667A (en) * | 1987-11-25 | 1990-08-28 | Medtronic, Inc. | Dual chamber activity responsive pacer |
| US6128533A (en) * | 1999-03-22 | 2000-10-03 | Pacesetter, Inc. | Pacemaker with automatic PVARP adjustment during automatic mode switching |
| US7254441B2 (en) * | 2000-12-21 | 2007-08-07 | Medtronic, Inc. | Fully inhibited dual chamber pacing mode |
| US6625489B2 (en) * | 2001-08-14 | 2003-09-23 | Medtronic, Inc. | Dynamic non-competitive atrial pacing |
| US8046065B2 (en) * | 2006-02-03 | 2011-10-25 | Medtronic, Inc. | Fusion pacing enhancements |
| US7869872B2 (en) * | 2006-06-15 | 2011-01-11 | Medtronic, Inc. | System and method for determining intrinsic AV interval timing |
| US7894898B2 (en) * | 2006-06-15 | 2011-02-22 | Medtronic, Inc. | System and method for ventricular interval smoothing following a premature ventricular contraction |
| CN104623804B (en) * | 2015-02-17 | 2017-03-01 | 上海微创医疗器械（集团）有限公司 | One kind treats ARR armarium |
-
2015
- 2015-02-17 CN CN201510086551.9A patent/CN104623804B/en active Active
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| CN104623804A (en) | 2015-05-20 |
| WO2016131350A1 (en) | 2016-08-25 |
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