CN110279945B

CN110279945B - Implantable cardiac pacemaker

Info

Publication number: CN110279945B
Application number: CN201910621895.3A
Authority: CN
Inventors: 潘登; 潘月
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2022-12-20
Anticipated expiration: 2039-07-10
Also published as: CN110279945A

Abstract

The invention discloses an implantable cardiac pacemaker, which comprises a pacemaker shell and an assembly seat, wherein the assembly seat is arranged on the outer wall of the upper end of the rightmost side of the pacemaker shell, the left end of the assembly seat is connected with a connecting block, the connecting block and the assembly seat are fixedly connected through an adhesive, two novel buffer reinforcing devices are added between the pulse generator and the built-in battery of the implantable cardiac pacemaker in opposite directions, and six other novel buffer reinforcing devices are respectively added between the pulse generator and the inner wall of the pacemaker shell and between the built-in battery and the inner wall of the pacemaker shell, so that the pulse generator and the built-in battery in the pacemaker shell are fixedly connected through the novel buffer protective devices, the conditions can be effectively avoided from occurring, the whole pacemaker is more efficiently and safely used, and the service life of the whole implantable cardiac pacemaker can be prolonged.

Description

Implantable cardiac pacemaker

Technical Field

The invention belongs to the technical field related to cardiac pacemakers, and particularly relates to an implantable cardiac pacemaker.

Background

The pacemaker is an electronic therapeutic instrument implanted in the body, and the pulse generator delivers electric pulses supplied by a battery, and the electric pulses are conducted by a lead electrode to stimulate cardiac muscle contacted by the electrode, so that the heart is excited and contracted, and the purpose of treating cardiac dysfunction caused by certain arrhythmias is achieved.

Publication number is 208017933U's patent document discloses a cardiac resuscitation pacemaker, including mount pad and pacemaker, be equipped with the connecting wire through the pipe of being qualified for the next round of competitions on one side lateral wall of mount pad, and the opposite side of mount pad is equipped with the mounting groove that the opening deviates from the connecting wire, one side of pacemaker is equipped with the sleeve pipe of horizontal setting, and the sleeve pipe is hollow structure, the pacemaker transversely inserts through the sleeve pipe and establishes in the mounting groove, sheathed tube lateral wall symmetry is equipped with two horizontal branch that set up, and is connected with the connecting block between two branch, the symmetry is equipped with the bar opening of horizontal setting on the sheathed tube both sides lateral wall, two all insert in the bar opening and be equipped with rather than assorted expansion block, one side of expansion block is connected with the connecting block through the spring. The utility model discloses in, this cardiac resuscitation pacemaker can install or dismantle the operation fast, and the simple operation wins certain time for the operation, has guaranteed patient's life safety, but there is following problem in current implanted cardiac pacemaker technique: the pulse generator and the built-in battery inside the existing implantable cardiac pacemaker are fixed through the fixing posts and the pacemaker shell, the fixing posts which play a fixing role are easily broken inside the pacemaker shell after the use time is too long or the movement amount of a patient is too large, and once the fixing posts are broken, the pulse generator and the built-in battery lose the fixing role inside the pacemaker shell, so that the whole cardiac pacemaker can drive the pulse generator which loses the fixing role and the built-in battery to shake and collide inside the pacemaker shell due to the fact that the patient needs to walk and operate when the cardiac pacemaker is used, the pulse generator and the built-in battery are easily damaged by short circuit, and the implantable cardiac pacemaker can stop working once the pulse generator and the built-in battery are damaged by short circuit, so that the safety threat can be generated to the patient.

Disclosure of Invention

The invention aims to provide an implantable cardiac pacemaker, which aims to solve the problem that the fixed column which plays a role in fixing is easy to break in the pacemaker shell after the pacemaker is used for a long time or when the amount of exercise of a patient is too large, so that the pulse generator and a built-in battery are easy to be damaged due to short circuit.

In order to achieve the purpose, the invention provides the following technical scheme: an implantable cardiac pacemaker comprises a pacemaker shell and an assembly seat, wherein the assembly seat is arranged on the outer wall of the upper end of the rightmost side of the pacemaker shell, the left end of the assembly seat is connected with a connecting block, the connecting block and the assembly seat are fixedly connected through an adhesive, two connecting jacks with openings towards the left are transversely arranged inside the connecting block, an anode catheter and a cathode catheter are respectively connected inside the circumferences of the two connecting jacks, the anode catheter and the cathode catheter are both arranged outside the left side of the pacemaker shell, a pulse generator is arranged inside the lower half circumference of the pacemaker shell, a built-in battery is arranged on the upper side of the pulse generator, the pulse generator and the built-in battery are electrically connected through a connecting guide rod, a pacemaker circuit board is connected on the outer wall of the front end of the built-in battery, the pacemaker circuit board and the built-in battery are fixedly connected through an adhesive, the pacemaker circuit board, the anode catheter and the cathode catheter are all electrically connected through the built-in battery, the pulse generator and the built-in battery are both connected with a buffer device, a buffer retaining ring is arranged on the opposite inner wall of the pulse generator and the opposite to the pacemaker shell, a buffer retaining ring is arranged on the top end of the buffer chamber, a buffer retaining ring is arranged on the top end of the buffer retaining ring and a buffer retaining ring are arranged on the top end of the buffer chamber of the buffer retaining ring arranged on the buffer chamber, a buffer retaining ring are arranged on the top end of the buffer retaining ring and a buffer retaining ring arranged on the buffer chamber of the buffer retaining ring, the most top of buffer arm is connected with the contact piece, all be provided with powerful bonding piece on the top outer wall of contact piece and on the bottom outer wall of reinforcement piece, buffering reinforcing apparatus respectively with pacemaker casing, pulse generator and built-in battery fixed connection through the powerful bonding piece at both ends.

Preferably, be provided with the circuit board main part on the pacemaker circuit board, the circuit board main part passes through adhesive fixed connection on the front end outer wall of built-in battery, circuit board main part front end outer wall center department is connected with control chip, be connected with the perception chip on the left circuit board main part front end outer wall of control chip, be connected with pulse output chip on the circuit board main part front end outer wall on control chip right side, control chip, perception chip and pulse output chip all keep the electric connection state each other.

Preferably, the outermost ends of the anode conduit and the cathode conduit are respectively connected with an anode electrode tip and a cathode electrode tip, the insides of the circumferences of the anode conduit and the cathode conduit are respectively connected with an anode spiral lead and a cathode spiral lead, and the anode spiral lead and the cathode spiral lead are respectively and electrically connected with the anode electrode tip and the cathode electrode tip.

Preferably, the pacemaker housing is formed by stretching a titanium material and packaged by laser welding, the built-in battery is a lithium-iodine battery and provides electric energy through chemical reaction, the assembly seat and the connecting block are both made of epoxy polymer resin, and the diameters of the outer circumferences of the anode conduit and the cathode conduit are both smaller than 2.5mm.

Preferably, the pulse generator and the internal battery have the same transverse width, and the distance between the pulse generator and the internal battery and the inner wall of the pacemaker housing are both equal.

Preferably, two buffering and reinforcing devices are connected to opposite directions of the pulse generator and the built-in battery, six buffering and reinforcing devices are respectively connected between the pulse generator and the inner wall of the pacemaker shell and between the built-in battery and the inner wall of the pacemaker shell, the fourteen buffering and reinforcing devices are identical in shape, size and structure, and the maximum moving distance of a buffering rod on each buffering and reinforcing device in the buffering chamber is half of the distance between the pulse generator and the built-in battery.

Preferably, the pacemaker circuit board has a length and a width smaller than those of the built-in battery, and the thickness of the circuit board main body on the pacemaker circuit board is only one millimeter.

Compared with the prior art, the invention provides an implantable cardiac pacemaker, which has the following beneficial effects:

1. the invention adds two novel buffer reinforcing devices in the opposite direction of the pulse generator and the built-in battery of the implanted cardiac pacemaker, and respectively adds another six novel buffer reinforcing devices between the pulse generator and the inner wall of the pacemaker shell and between the built-in battery and the inner wall of the pacemaker shell, thus the traditional mode that the pulse generator and the built-in battery are fixed with the pacemaker shell through the fixing posts can be replaced by the novel buffer reinforcing devices for fixed connection, because the traditional mode that the pulse generator and the built-in battery are fixed with the pacemaker shell through the fixing posts easily causes the fixing posts to break in the pacemaker shell after long use time or when the movement amount of a patient is overlarge, and once the fixing posts break, the pulse generator and the built-in battery lose the fixing effect in the pacemaker shell, the whole cardiac pacemaker can drive the fixed pulse generator and the built-in battery to lose the fixing effect in the pacemaker shell, thereby the four novel buffer reinforcing devices can easily cause the damage of the pulse generator and the built-in battery to the pacemaker and prevent the four buffer devices from damaging the built-in battery when the pacemaker shell is used, and the four buffer devices can effectively prevent the four buffer devices from damaging the implanted cardiac pacemaker and the built-in the buffer and the four buffer devices from damaging the built-in the implanted pacemaker shell when the pacemaker shell, therefore, the pulse generator and the built-in battery can be fixed in the pacemaker shell in a reinforcing way, and the whole implantable cardiac pacemaker has certain impact resistance, so that the whole implantable cardiac pacemaker is more efficient and safer to use, and the service life of the whole implantable cardiac pacemaker can be prolonged;

2. the distance using mode and principle of the novel buffering and reinforcing device are as follows, taking six buffering and reinforcing devices connected to the inner walls of a pulse generator and a pacemaker shell as an example, after the pulse generator is installed in the pacemaker shell, the two ends of the six buffering and reinforcing devices are respectively connected to the inner wall of the pacemaker shell and the outer wall of the pulse generator through strong bonding sheets, so that the pulse generator is connected and fixed in the pacemaker shell, therefore, when a patient does short and violent movement, the pacemaker can be driven to wholly shake due to the movement of the patient, the pulse generator is connected and fixed with the pacemaker shell through the six novel buffering and reinforcing devices, and one end (a buffering rod and a contact piece at the front end of the buffering and reinforcing device) capable of moving locally is connected to the outer wall of the pulse generator through the strong bonding sheets, therefore, when the whole pacemaker shakes due to the movement of a patient, the pulse generator is driven to shake in the pacemaker housing, the pressure generated when the shaken pulse generator shakes is transmitted to the buffering and reinforcing device under the action of the pressure, one end (the buffering rod and the contact piece at the front end of the buffering and reinforcing device) of the buffering and reinforcing device, which can move locally, is compressed towards the direction opposite to the pressure, namely the buffering rod is compressed towards the inside of the buffering chamber under the action of the pressure, and the buffering spring at the bottom end of the buffering rod is driven to be compressed towards the inside of the buffering chamber under the action of the pressure when the buffering rod is compressed towards the inside of the buffering chamber, the transmitted pressure is relieved and counteracted by the buffering spring when the buffering spring is compressed, and then the pacemaker housing and the pulse generator can move outwards to reset after the pressure of the interaction between the pacemaker housing and the pulse generator is counteracted, and the inside reaction force spring of buffer chamber then can restrict buffer spring and continue to reset this moment after resetting to safe value, thereby make buffering reinforcing apparatus can both play the cushioning effect when receiving the pressure of two directions, thereby can effectually prevent to beat the condition emergence that mutual transmission and direct whole use were on buffering reinforcing apparatus of the pressure of interaction between ware casing and the impulse generator, thereby the inside impulse generator of protection pacemaker casing can normally and stable work, thereby play continuation safety guarantee effect to patient's life.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:

fig. 1 is a schematic diagram of an external planar structure of an implantable cardiac pacemaker according to the present invention;

fig. 2 is a schematic diagram of an internal planar structure of an implantable cardiac pacemaker according to the present invention;

FIG. 3 is a schematic structural view of a buffering and reinforcing apparatus according to the present invention;

FIG. 4 is a schematic diagram of a circuit board structure of a pacemaker according to the present invention;

FIG. 5 is an enlarged structural view of the tail portions of the anode conduit and the cathode conduit according to the present invention;

in the figure: 1. a pacemaker housing; 2. an anode conduit; 3. a cathode conduit; 4. connecting the jacks; 5. connecting blocks; 6. an assembly seat; 7. a pulse generator; 8. a buffering reinforcement device; 9. connecting the guide rod; 10. a built-in battery; 11. a pacemaker circuit board; 12. a strong adhesive sheet; 13. a reinforcing block; 14. a buffer chamber; 15. a buffer spring; 16. a limiting baffle plate; 17. a reaction force spring; 18. a limiting retainer ring; 19. a buffer rod; 20. a contact piece; 21. a sense chip; 22. a circuit board main body; 23. a control chip; 24. a pulse output chip; 25. an anode electrode tip; 26. an anode spiral wire; 27. a cathode spiral wire; 28. a cathode electrode head.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: an implantable cardiac pacemaker comprising a pacemaker housing 1 and an assembly base 6, the assembly base 6 is mounted on the outer wall of the upper end of the rightmost side of the pacemaker housing 1, the pacemaker housing 1 is formed by stretching a titanium material and is packaged by laser welding, a lithium-iodine battery is used as a built-in battery 10 and provides electric energy through chemical reaction, the assembly base 6 and a connecting block 5 are both made of epoxy polymer resin, the outer circumference diameters of an anode conduit 2 and a cathode conduit 3 are both smaller than 2.5mm, the diameters of the anode conduit 2 and the cathode conduit 3 are smaller than 2.5mm so as to transmit electric pulses to the heart, stimulate the heart to contract, information about the heart movement is sensed and fed back to a pulse generator 7 so as to adjust the delivery of next pulse according to the excitation condition of the heart, the connecting block 5 is connected to the left end of the assembly base 6, the connecting block 5 and the assembly base 6 are fixedly connected by an adhesive, two connecting jacks 4 with the left opening are arranged in the transverse direction of the connecting jack 5, the anode conduit 2 and the cathode conduit 3 are respectively connected to the anode conduit 2 and the cathode conduit 3, the cathode conduit 2 and the cathode conduit 3 are respectively connected to an anode conduit 26 and a cathode conduit 3, so that the cathode conduit and the wire can be electrically broken cathode conduit 26 and the cathode conduit 3 can be connected to the anode conduit 3, and the cathode conduit 3, thereby the cathode conduit can be connected to the anode conduit 3, the cathode conduit can be electrically connected to the cathode conduit 26 and the cathode conduit 3, and the cathode conduit to cause the cathode conduit to be capable of the anode conduit to be capable of the cathode conduit to be capable of the wire to be capable of being broken wire to be capable of being respectively, and the cathode conduit to be capable of being connected to be capable of being broken and the cathode conduit to be capable of being connected to be capable of being broken to be capable of being used in a cathode conduit to be capable of being broken in a cathode conduit to be capable of being connected to be capable of being used in a cathode conduit to cause the cathode conduit to be capable of being broken state, inside pulse generator 7 that is provided with of half section girth under the pacemaker casing 1, the upside of pulse generator 7 is provided with built-in battery 10, pulse generator 7 and built-in battery 10 are through connecting guide 9 electric connection, be connected with pacemaker circuit board 11 on the front end outer wall of built-in battery 10, pacemaker circuit board 11 and built-in battery 10 pass through adhesive fixed connection, pacemaker circuit board 11, positive pole pipe 2 and negative pole pipe 3 all are through built-in battery 10 electric connection, all be connected with buffering reinforcing apparatus 8 on pulse generator 7 and built-in battery 10's the subtend inner wall and on pulse generator 7 and built-in battery 10 and the pace maker casing 1 subtend inner wall.

An implantable cardiac pacemaker, a reinforcing block 13 is arranged on a buffering reinforcing device 8, a buffering chamber 14 is arranged inside the circumference of the reinforcing block 13, a limiting check ring 18 is connected to the inner wall of the circumference at the topmost end of the buffering chamber 14, a buffering spring 15 is arranged inside the circumference of the buffering chamber 14, a limiting stop piece 16 is arranged at the top end of the buffering spring 15, a buffering rod 19 is connected to the center of the top end of the limiting stop piece 16, the top end of the buffering rod 19 penetrates through the buffering chamber 14 and the limiting check ring 18 and is arranged outside the top end of the reinforcing block 13, a reaction force spring 17 is connected between the limiting stop ring 18 and the limiting stop piece 16 in an opposite direction, the reaction force spring 17 is sleeved outside the circumference of the buffering rod 19, a contact piece 20 is connected to the topmost end of the buffering rod 19, and strong bonding pieces 12 are arranged on the outer wall of the top end of the contact piece 20 and the outer wall of the bottom of the reinforcing block 13, the buffering and reinforcing device 8 is respectively fixedly connected with the pacemaker housing 1, the pulse generator 7 and the built-in battery 10 through the strong bonding sheets 12 at the two ends, when a patient does short and violent movement, the pacemaker is driven to wholly shake due to the movement of the patient, the pulse generator 7 is fixedly connected with the pacemaker housing 1 through six novel buffering and reinforcing devices 8, one end (the buffer rod 19 and the contact sheet 20 at the front end thereof) which can be locally moved on the buffering and reinforcing device 8 is connected on the outer wall of the pulse generator 7 through the strong bonding sheets 12, so when the whole pacemaker shakes due to the movement of the patient, the pulse generator 7 is driven to shake in the pacemaker housing 1, and the pressure generated when the shaking pulse generator 7 shakes is transmitted to the buffering and reinforcing device 8 and is subjected to the pressure action, at this time, the end (the buffer rod 19 and the contact piece 20 at the front end thereof) of the buffer reinforcing device 8 capable of moving locally is compressed in the direction opposite to the pressure, that is, the buffer rod 19 is compressed toward the inside of the buffer chamber 14 when being subjected to the pressure, the buffer spring 15 at the bottom end thereof is driven to be compressed toward the inside of the buffer chamber 14 when the buffer rod 19 is compressed toward the inside of the buffer chamber 14, the buffer spring 15 relieves and counteracts the transmitted pressure when being compressed, the buffer spring is then reset to move outwards when counteracting the pressure interacting between the pacemaker housing 1 and the pulse generator 7, and the counter force spring 17 inside the buffer chamber 14 limits the buffer spring 15 to be reset continuously when being reset to a safe value, so that the buffer reinforcing device 8 can play a buffering role when being subjected to the pressures in two directions, and the pressure interacting between the pacemaker housing and the pulse generator 7 can be effectively prevented from being transmitted to each other and directly acting on the buffer reinforcing device 8, and the pulse generator 7 in the interior of the pacemaker housing 1 can work stably and can work normally.

The utility model provides an implantable cardiac pacemaker, be provided with circuit board main part 22 on pacemaker circuit board 11, circuit board main part 22 passes through adhesive fixed connection on the front end outer wall of built-in battery 10, circuit board main part 22 front end outer wall center department is connected with control chip 23, be connected with perception chip 21 on the left circuit board main part 22 front end outer wall of control chip 23, be connected with pulse output chip 24 on the circuit board main part 22 front end outer wall on control chip 23 right side, control chip 23, perception chip 21 and pulse output chip 24 all keep the electric connection state each other, control chip 23's effect does: the control chip 23 decides when to trigger the pacing pulse, decides the interval of blanking and refractory period, determines the atrioventricular delay and whether to reset the timer, because the myocardium is in the refractory period, the pacing pulse sent out immediately after detecting R wave will not produce any effect on the myocardium, thereby avoiding the vulnerable period of the myocardium from being stimulated by the electrical pulse, and the pulse output chip 24 is a circuit which finally produces the voltage pulse to the myocardium, and the function of the circuit is: the electrical pulse with proper strength can stimulate cardiac muscle to generate a distributable action potential, and finally lead to cardiac muscle contraction and cardiac pulsation, the principle is that electrical energy is stored by charging a capacitor, when a pacemaker circuit board 11 determines to deliver pulses, the capacitor discharges, so that the purposes of assisting the cardiac muscle contraction and the cardiac pulsation are achieved, the transverse widths of a pulse generator 7 and an internal battery 10 are equal, the distance between the pulse generator 7 and the internal battery 10 and the inner wall of a pacemaker housing 1 are equal, two buffer reinforcing devices 8 are connected between the pulse generator 7 and the internal wall of the pacemaker housing 1 and between the internal battery 10 and the inner wall of the pacemaker housing 1 in opposite directions, six buffer reinforcing devices 8 are respectively connected between the pulse generator 7 and the inner wall of the pacemaker housing 1 and between the internal battery 10 and the inner wall of the pacemaker housing 1, and fourteen buffer reinforcing devices 8 have the same shape, size and structure, the maximum moving distance of the buffer rod 19 on the buffer reinforcing device 8 in the buffer chamber 14 is half of the distance between the pulse generator 7 and the built-in battery 10, and the fourteen buffer protection devices can fix and buffer the pulse generator 7 and the built-in battery 10 in the pacemaker housing 1 in multiple directions and multiple angles, so that the pulse generator 7 and the built-in battery 10 can be reinforced and fixed in the pacemaker housing 1, the whole implantable cardiac pacemaker has certain impact resistance, the whole implantable cardiac pacemaker is more efficient and safe to use, the length and the width of the pacemaker circuit board 11 are both smaller than those of the built-in battery 10, the thickness of the circuit board main body 22 on the pacemaker circuit board 11 is only one millimeter, and after the pacemaker circuit board 11 is mounted on the outer wall of the front end of the built-in battery 10, the total thickness of the assembled built-in battery 10 and the pacemaker circuit board 11 does not affect the normal installation of the built-in battery and the pacemaker circuit board into the pacemaker housing 1, so that the pacemaker can be assembled and used normally.

The working principle and the using process of the invention are as follows: after the device is installed, when the device is used, firstly, a pacemaker circuit board 11 is required to be installed on the outer wall of the front end of an internal battery 10 through an adhesive, and the pacemaker circuit board are electrically connected, then, a pulse generator 7 is installed in the lower half section of a pacemaker shell 1 through six buffering and reinforcing devices 8, then, the internal battery 10 is led to the upper end of the installed pulse generator 7 through two buffering and reinforcing devices 8, the internal battery 10 is required to be fixed in the pacemaker shell 1 through the other six buffering and reinforcing devices 8, finally, the pacemaker shell 1 is packaged, then, one ends of an anode catheter 2 and one end of a cathode catheter 3 are respectively connected to the inner parts of two connecting jacks 4 on a connecting block 5, finally, the whole implantable cardiac pacemaker is installed on a body of a user through an operation for use, the function of a sensing chip 21 on the pacemaker circuit board 11 is realized, and a time window is as follows: according to the cardiac cycle, it is impossible to have R wave or P wave in a period of time after detecting R wave or sending out pacing pulse, the signal in the electrode is not transmitted into the amplifier by the blanking circuit in the sensing chip 21, the blanking time is 10-400ms, namely, the period of the counter-turn, and by setting the period of the counter-turn, the pacemaker can be prevented from being triggered by T wave and other external signals by mistake, and the pacing frequency is slowed down or the pacing arrhythmia is paced, and the control chip 23 has the functions of: the timing device is a timer which is used as a core component, the timing device generates accurate timing through a clock pulse, the control chip 23 determines when to trigger the pacing pulse, determines the interval of blanking and refractory periods, determines atrioventricular delay and whether to reset the timer, and the pacing pulse immediately sent after detecting R does not have any effect on the myocardium because the myocardium is in the refractory period, so that the stimulation of the electrical pulse in the vulnerable period of the myocardium can be avoided, the frequency adaptation pacing needs to detect indexes such as blood pressure, blood oxygen, body temperature, metabolism level and the like besides the need of detecting the electrical activity of the heart, the sending frequency of the pacing pulse is automatically determined on the basis of comprehensively considering the actual needs of human physiology, the pacing device is a control mode which is closer to the ideal, on the basis of the basic modes, a plurality of practical pacemaker types and modes are developed according to the difference of detection parts, stimulation parts and the like, and the pulse output chip 24 is a circuit which finally generates a voltage pulse to the myocardium, and has the functions of: the electrical pulse with proper strength can stimulate the cardiac muscle to generate a distributable action potential, and finally leads to cardiac muscle contraction and cardiac pulsation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An implantable cardiac pacemaker comprising a pacemaker housing (1) and an assembly base (6), characterized in that: the assembly seat (6) is arranged on the outer wall of the upper end of the rightmost side of the pacemaker shell (1), the left end of the assembly seat (6) is connected with a connecting block (5), the connecting block (5) and the assembly seat (6) are fixedly connected through an adhesive, two connecting jacks (4) with openings towards the left are arranged in the connecting block (5) transversely, an anode catheter (2) and a cathode catheter (3) are respectively connected with the inner part of the circumference of the two connecting jacks (4), the anode catheter (2) and the cathode catheter (3) are both arranged on the outer part of the left side of the pacemaker shell (1), a pulse generator (7) is arranged in the inner part of the lower half section of the circumference of the pacemaker shell (1), the upper side of the pulse generator (7) is provided with a built-in battery (10), the pulse generator (7) and the built-in battery (10) are electrically connected through a connecting guide rod (9), the outer wall of the front end of the built-in battery (10) is connected with a pacemaker circuit board (11), the pacemaker circuit board (11) and the built-in battery (10) are fixedly connected through an adhesive, the pacemaker circuit board (11), the anode catheter (2) and the cathode catheter (3) are all electrically connected through the built-in battery (10), the pulse generator (7) and the built-in battery (10) are arranged on opposite inner walls of the pulse generator (7) and the built-in battery (10), and the pulse generator (7), the built-in battery (10) and the pacemaker shell (1) are connected ) The opposite inner walls are connected with a buffering and reinforcing device (8), a reinforcing block (13) is arranged on the buffering and reinforcing device (8), a buffer chamber (14) is arranged inside the circumference of the reinforcing block (13), the inner wall of the circumference at the topmost end of the buffer chamber (14) is connected with a limiting retainer ring (18), a buffer spring (15) is arranged in the circumference of the buffer chamber (14), the top end of the buffer spring (15) is provided with a limit stop piece (16), the center of the top end of the limiting blocking piece (16) is connected with a buffer rod (19), the top end of the buffer rod (19) passes through the buffer chamber (14) and the limit retainer ring (18) and is arranged outside the top end of the reinforcing block (13), a counterforce spring (17) is connected between the opposite direction of the limiting retainer ring (18) and the limiting baffle sheet (16), the counterforce spring (17) is sleeved outside the circumference of the buffer rod (19), the topmost end of the buffer rod (19) is connected with a contact piece (20), strong bonding sheets (12) are arranged on the outer wall of the top end of the contact sheet (20) and the outer wall of the bottom part of the reinforcing block (13), the buffering and reinforcing device (8) is respectively fixedly connected with the pacemaker shell (1), the pulse generator (7) and the built-in battery (10) through strong bonding sheets (12) at two ends.

2. An implantable cardiac pacemaker as claimed in claim 1, wherein: the pacemaker is characterized in that a circuit board main body (22) is arranged on the pacemaker circuit board (11), the circuit board main body (22) is fixedly connected to the outer wall of the front end of the built-in battery (10) through an adhesive, a control chip (23) is connected to the center of the outer wall of the front end of the circuit board main body (22), the outer wall of the front end of the circuit board main body (22) on the left side of the control chip (23) is connected with a sensing chip (21), a pulse output chip (24) is connected to the outer wall of the front end of the circuit board main body (22) on the right side of the control chip (23), and the control chip (23), the sensing chip (21) and the pulse output chip (24) are all electrically connected with one another.

3. An implantable cardiac pacemaker as claimed in claim 1, wherein: the utility model discloses a cathode structure, including positive pole pipe (2), negative pole pipe (3), positive pole pipe (2) and negative pole pipe (3), the outermost end of positive pole pipe (2) and negative pole pipe (3) is connected with positive pole electrode tip (25) and negative pole electrode head (28) respectively, the circumference inside of positive pole pipe (2) and negative pole pipe (3) is connected with positive pole spiral wire (26) and negative pole spiral wire (27) respectively, positive pole spiral wire (26) and negative pole spiral wire (27) are equallyd divide and are do not with positive pole electrode tip (25) and negative pole electrode head (28) electric connection.

4. The implantable cardiac pacemaker of claim 1, wherein: the pacemaker is characterized in that the pacemaker shell (1) is formed by stretching a titanium material and packaged by laser welding, the built-in battery (10) is a lithium-iodine battery and provides electric energy through chemical reaction, the assembly seat (6) and the connecting block (5) are both made of epoxy polymer resin, and the outer circumferential diameters of the anode catheter (2) and the cathode catheter (3) are both smaller than 2.5mm.

5. An implantable cardiac pacemaker as claimed in claim 1, wherein: the pulse generator (7) and the built-in battery (10) are equal in transverse width, and the distance between the pulse generator (7) and the built-in battery (10) and the inner wall of the pacemaker shell (1) are equal.

6. An implantable cardiac pacemaker as claimed in claim 1, wherein: impulse generator (7) and built-in battery (10) subtend intermediate junction have two buffering reinforcing apparatus (8), divide equally between impulse generator (7) and pacemaker casing (1) inner wall and between built-in battery (10) and pacemaker casing (1) inner wall and be connected with six buffering reinforcing apparatus (8), fourteen the shape size and the structure composition of buffering reinforcing apparatus (8) are all the same, buffer bar (19) on buffering reinforcing apparatus (8) are distance between impulse generator (7) and built-in battery (10) obtain half at the inside biggest home distance of surge chamber (14).

7. An implantable cardiac pacemaker as claimed in claim 2, wherein: the length and the width of the pacemaker circuit board (11) are both smaller than those of the built-in battery (10), and the thickness of a circuit board main body (22) on the pacemaker circuit board (11) is only one millimeter.