Pacing electrode apparatus and pacing device

Abstract

The present application relates to a kind of pacing electrode device and pacing equipment, pacing electrode device includes outer sheath, electrode assembly and control, electrode assembly is used to transmit electric pulse, electrode assembly includes original state and yield state, electrode assembly includes the first position and the second position relative to outer sheath, control can make electrode assembly move between the first position and the second position, outer sheath is used to make electrode assembly from original state to yield state when electrode assembly moves from the second position to the first position, electrode assembly in yield state is located in outer sheath, electrode assembly in original state is partially located outside outer sheath, and electrode assembly in original state can keep contact with heart. When in original state, the above-mentioned pacing electrode device can keep contact with heart, so that it can be stable to make heart pace. The pacing equipment includes the above-mentioned pacing electrode device, and can be stable to make heart pace.

Description

Technical Field

[0001] This invention relates to the field of cardiac pacing technology, and in particular to pacing electrode devices and pacing equipment. Background Technology

[0002] Clinically, temporary pacing therapy is commonly used to treat bradycardia caused by acute, reversible factors and / or severe hemodynamic symptoms, in cases where permanent pacing is not required and / or immediate implantation of a permanent pacemaker is not necessary. Temporary pacing therapy involves delivering electrical pulses of a predetermined frequency and voltage amplitude and pulse width to the patient's myocardium, stimulating myocardial depolarization and thereby capturing the heart to induce cardiac contraction. Depending on the pacing site, temporary pacing therapy can be divided into endocardial temporary pacing and epicardial temporary pacing. Endocardial temporary pacing is widely used due to its minimal clinical trauma and ease of implantation. Endocardial temporary pacing requires the use of an endocardial temporary pacing electrode catheter.

[0003] In clinical practice, routinely used endocardial temporary pacing electrodes are inserted into the right ventricle via a vein. Once the electrode catheter tip reaches the ventricular wall, the operator needs to push the catheter further forward. The pressure generated by the bending of the electrode catheter ensures good contact between the tip and the ventricular wall. However, changes in patient position, getting out of bed, or other unexpected situations can cause the electrode catheter tip to dislodge or make poor contact with the ventricular wall, leading to pacing failure and, in severe cases, even endangering the patient's life. Furthermore, the pressure generated by the bending of the electrode catheter acting on one spot of the ventricular wall for an extended period can also cause ventricular perforation, resulting in cardiac tamponade, which can also be life-threatening. Summary of the Invention

[0004] Therefore, it is necessary to provide a pacing electrode device and pacing equipment to address the issue of how pacing electrode devices can stably pace the heart.

[0005] A pacing electrode device includes an outer sheath, an electrode assembly, and a control unit. The electrode assembly is used to transmit electrical pulses and includes an initial state and a yielded state. The electrode assembly includes a first position and a second position relative to the outer sheath. The control unit enables the electrode assembly to move between the first position and the second position. The outer sheath is used to transition the electrode assembly from the initial state to the yielded state when the electrode assembly moves from the second position to the first position. The electrode assembly in the yielded state is located inside the outer sheath, while the electrode assembly in the initial state is partially located outside the outer sheath and is able to maintain contact with the heart.

[0006] In one embodiment, the electrode assembly in its original state is bent away from the central axis of the outer sheath, and when the electrode assembly moves from the second position to the first position, the outer sheath can press against the sidewall of the electrode assembly.

[0007] In one embodiment, the electrode assembly includes a main conductor and a plurality of branch conductors, one end of each branch conductor being connected to the main conductor for conducting electrical pulses, and the other end of each branch conductor being used to maintain contact with the heart.

[0008] In one embodiment, the plurality of branch conductors in their original state are located outside the outer sheath, the plurality of branch conductors are circumferentially distributed along the central axis of the outer sheath, and the plurality of branch conductors in their original state are bent in a direction away from the central axis of the outer sheath.

[0009] In one embodiment, the branch conductor includes a first connector, a cephalic electrode, and a return electrode. One end of the first connector is connected to the main conductor, and the cephalic electrode is disposed at the other end of the first connector. The cephalic electrode is used to contact the heart when the branch conductor is in its original state. The return electrode is disposed on the first connector and is electrically connected to the cephalic electrode. When the electrode assembly is in the second position, both the return electrode and the cephalic electrode are located outside the outer sheath.

[0010] In one embodiment, the branch conductor includes a first connector and a head electrode connected to the first connector, the main conductor includes a second connector and a loop electrode, one end of the first connector is connected to the second connector, the head electrode is disposed at the other end of the first connector, the head electrode is used to contact the heart when the branch conductor is in its original state, the loop electrode is disposed on the second connector near the end of the first connector, the loop electrode is electrically connected to the head electrode, and when the electrode assembly is in a first position, both the loop electrode and the head electrode are located outside the outer sheath.

[0011] In one embodiment, the main conductor is connected to a pulse generator that inputs a constant voltage electrical pulse to the main conductor, and one end of one of the plurality of branch conductors is electrically connected in parallel to the main conductor.

[0012] In one embodiment, the control element is connected to the electrode assembly to drive the electrode assembly to move between the first position and the second position; or, the control element is connected to the outer sheath to drive the outer sheath to move, and the electrode assembly is able to move relative to the outer sheath between the first position and the second position when the outer sheath moves.

[0013] In one embodiment, the pacing electrode device further includes a control handle, the outer sheath includes a pacing end and a control end disposed opposite to the pacing end, the control handle is connected to the control end of the outer sheath, the electrode assembly passes through the control handle, and a control element is movably disposed on the control handle, the control element being used to move the electrode assembly between a first position and a second position when it moves.

[0014] In one embodiment, the control handle has a limiting hole, the control component includes a connecting part and a driving part connected to the connecting part, the driving part passes through the limiting hole and slides with the hole wall of the limiting hole, the connecting part is connected to the electrode assembly, or the connecting part is connected to the outer sheath, and the driving part moves to move the electrode assembly between the first position and the second position.

[0015] In one embodiment, the outer wall of the control handle is marked.

[0016] In one embodiment, the pacing electrode device further includes a bending assembly connected to the outer sheath for bending the outer sheath.

[0017] A pacing device, the pacing device comprising:

[0018] The pacing electrode device as described in any of the above embodiments;

[0019] A pulse generator, electrically connected to the electrode assembly, is used to provide electrical pulses to the electrode assembly.

[0020] In the aforementioned pacing electrode device, the outer sheath can switch the electrode assembly from its original state to a yielded state when the electrode assembly moves from the second position to the first position. Thus, the electrode assembly can be switched between the original and yielded states via a control mechanism in conjunction with the outer sheath. The electrode assembly in the yielded state is located within the outer sheath, facilitating implantation of the pacing electrode device into the human body. The electrode assembly in the original state maintains contact with the heart, ensuring that the pacing electrode device can stably engage the heart to generate cardiac contractions. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a pacing device provided in one embodiment;

[0022] Figure 2 for Figure 1 A schematic diagram of the pacing electrode device in the pacing device shown;

[0023] Figure 3 For along Figure 2Schematic diagram of the cross section of line AA;

[0024] Figure 4 for Figure 2 A partial enlarged view of point B in the pacing electrode device;

[0025] Figure 5 for Figure 2 A partial enlarged view of point B in another embodiment of the pacing electrode device shown;

[0026] Figure 6 for Figure 2 The side view of the pacing electrode device in its original state.

[0027] Reference numerals: 10, pacing electrode device; 100, outer sheath; 110, pacing end; 120, control end; 200, electrode assembly; 210, main conductor; 211, second connector; 220, branch conductor; 221, head electrode; 222, loop electrode; 223, first connector; 230, positive tail wire; 240, negative tail wire; 300, control component; 400, control handle; 410, limiting hole; 500, bending assembly; 510, bending component. Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0034] See Figure 1Figure 1 shows a schematic diagram of a pacing device according to an embodiment of the present invention. The pacing device provided in this embodiment includes a pacing electrode device 10 and a pulse generator. The pulse generator is electrically connected to the pacing electrode device 10 and can send electrical pulses to the pacing electrode device 10. One end of the pacing electrode device 10, away from the pulse generator, is implanted in the human body and maintains contact with the heart muscle. That is, an electrical connection can be established between the heart and the pulse generator through the pacing electrode device 10. Thus, the pulse generator can also sense the electrical signals of the heart through the pacing electrode device 10. When abnormal electrical signals are present in the heart, the pulse generator can send electrical pulses to the heart through the pacing electrode device 10 to capture the heart and cause it to contract.

[0035] Please see Figure 2 and Figure 3 In one embodiment, the pacing electrode device 10 includes an outer sheath 100, an electrode assembly 200, and a control element 300. The electrode assembly 200 is used to transmit electrical pulses and includes an initial state and a yielded state. The electrode assembly 200 includes a first position and a second position relative to the outer sheath 100. The control element 300 enables the electrode assembly 200 to move between the first and second positions. The outer sheath 100 is used to transition the electrode assembly 200 from the initial state to the yielded state when the electrode assembly 200 moves from the second position to the first position.

[0036] The electrode assembly 200 in the yielded state is located inside the outer sheath 100, while the electrode assembly 200 in the original state is partially located outside the outer sheath 100, and the electrode assembly 200 in the original state is able to maintain contact with the heart.

[0037] The aforementioned pacing electrode device 10 includes a control unit 300 that enables the electrode assembly 200 to move between a first position and a second position. When the electrode assembly 200 moves from the second position to the first position, the outer sheath 100 enables the electrode assembly 200 to transition from its initial state to a yielded state. In other words, when the electrode assembly 200 is in the second position, it is in its initial state; when it is in the first position, it is in a yielded state. That is, the interaction between the control unit 300 and the outer sheath 100 allows the electrode assembly 200 to switch between its initial and yielded states.

[0038] Furthermore, the electrode assembly 200 in its original state can maintain contact with the heart. That is, the control unit 300 can keep the electrode assembly 200 in its original state. In other words, the control unit 300 can keep the electrode assembly 200 in contact with the heart.

[0039] The electrode assembly 200, in its yielded state, is located within the outer sheath 100. This prevents the electrode assembly 200 in its original state from contacting other tissues in the body during implantation, thus avoiding interference with the implantation of the pacing electrode device 10. Specifically, for example, it prevents the electrode assembly 200 in its original state from contacting the blood vessel wall, which would prevent the pacing electrode device 10 from moving within the blood vessel. In other words, by cooperating with the control element 300 and the outer sheath 100 to position the electrode assembly 200 within the outer sheath 100, the pacing electrode device 10 can be easily implanted into the human body. That is, by cooperating with the control element 300 and the outer sheath 100 to switch the electrode assembly 200 from its original state to its yielded state, the pacing electrode device 10 can be easily implanted into the human body.

[0040] In the above embodiments, specifically, the pulse generator is electrically connected to the electrode assembly 200, and the pulse generator is used to provide electrical pulses to the electrode assembly 200. Further, the electrode assembly 200 is provided with a positive tail wire 230 and a negative tail wire 240, and the electrode assembly 200 is electrically connected to the pulse generator through the positive tail wire 230 and the negative tail wire 240.

[0041] Please see Figure 4 and Figure 5 In one embodiment, the electrode assembly 200 in its original state is bent away from the central axis of the outer sheath 100. When the electrode assembly 200 moves from the second position to the first position, the outer sheath 100 can press against the sidewall of the electrode assembly 200. The central axis of the outer sheath 100 is shown below. Figure 4 and Figure 5 The designation is K. This is understandable. Figure 4 and Figure 5 The electrode assembly 200 shown is in its original state. This configuration allows the curved electrode assembly 200 to connect with the myocardial tissue after implantation in the heart. Specifically, the curved electrode assembly 200 can be attached to myocardial tissue such as trabeculae. Therefore, good contact between the electrode assembly 200 and the heart can be maintained without applying pressure to the electrode assembly 200. Furthermore, even when the patient performs slight movements such as changing position or getting out of bed, the electrode assembly 200 will not separate from the myocardial tissue because it is connected to it.

[0042] Furthermore, combined Figure 4 and Figure 5 It is understandable. Figure 4 and Figure 5The electrode assembly 200 is shown in the second position. When the electrode assembly 200 moves from the second position to the first position, the outer sheath 100 can press against the side wall of the electrode assembly 200. Thus, the bent electrode assembly 200 can deform under the pressure of the outer sheath 100, changing from its original state to a yielded state. Under the control of the control member 300, it yields and retracts into the outer sheath 100. That is, the electrode assembly 200 changes from the second position to the first position. It should be understood that since the electrode assembly 200 bends away from the central axis of the outer sheath 100, it is obvious that the electrode assembly 200 can yield towards the central axis of the outer sheath 100 under the pressure of the outer sheath 100. That is, the electrode assembly 200 in its original state can yield and retract into the outer sheath 100 under the action of the outer sheath 100. Thus, by retracting the bent electrode assembly 200 into the outer sheath 100, it is possible to prevent the bent electrode assembly 200 from contacting tissues such as the blood vessel wall, thus avoiding interference with the implantation of the pacing electrode device 10. Furthermore, by retracting the curved electrode assembly 200 into the outer sheath 100, it is possible to prevent the electrode assembly 200 in its original state from contacting tissues such as the blood vessel wall, thereby reducing potential damage to the patient during the implantation of the outer sheath 100 and alleviating the patient's pain.

[0043] Furthermore, since the curved electrode assembly 200 can be retracted into the outer sheath 100 under the pressure of the outer sheath 100, the distance between the electrode assembly 200 in its original state and the central axis of the outer sheath 100 can be increased within a reasonable range. In this way, it is convenient to keep the pacing electrode device 10 in contact with the heart through the curved electrode assembly 200.

[0044] It is understood that the outer sheath 100 is hollow. The curved electrode assembly 200 described in each embodiment is the electrode assembly 200 in its original state.

[0045] In one embodiment, the electrode assembly 200 can be an elastic element. In its original state, the electrode assembly 200 is in a bent shape to facilitate the fixation of the cardiac myocardium. In its original state, the electrode assembly 200 can yield and retract into the outer sheath 100 under pressure. When the electrode assembly 200 moves from the first position to the second position, due to the loss of pressure from the outer sheath 100, the electrode assembly 200 can return to its original state, i.e., return to its bent shape, based on the elastic restoring force of the elastic element.

[0046] In some embodiments, the electrode assembly 200 can be a non-elastic component. Specifically, the electrode assembly 200 can be made of a metallic material, which has a certain elastic deformation capacity and a certain stiffness. Thus, as long as the deformation of the electrode assembly 200 under the compressive deformation of the outer sheath does not exceed the elastic limit of its material, the electrode assembly 200 can achieve the ability to transition between its original state and yield state. It is understood that the electrode assembly 200 can also be made of other materials according to actual needs, and this is not limited here.

[0047] Please continue reading. Figure 4 and Figure 5 In one embodiment, the electrode assembly 200 includes a main conductor 210 and a plurality of branch conductors 220. One end of each branch conductor 220 is connected to the main conductor 210 for conducting electrical pulses, and the other end of each branch conductor 220 is used to maintain contact with the heart. It is understood that the end of the main conductor 210 furthest from the branch conductors 220 is connected to a pulse generator. In other words, the pulse generator can conduct electrical pulses to the heart and sense the heart's electrical signals through the main conductor 210 and the branch conductors 220 in sequence.

[0048] Furthermore, since all the branch conductors 220 can transmit electrical pulses, any one of the branch conductors 220 can pace the heart. This significantly reduces the risk of pacing failure due to patient movement or other reasons preventing the pacing electrode device 10 from maintaining good contact with the heart. Specifically, since all the branch conductors 220 can conduct electrical pulses, it is only necessary to ensure that at least one branch conductor 220 maintains good contact with the heart at any given time to achieve the effect of capturing the heart. In other words, by configuring the electrode assembly 200 to include multiple branch conductors 220, and ensuring that each branch conductor 220 can conduct electrical pulses, multi-point pacing with the pacing electrode device 10 can be achieved.

[0049] Understandably, the multiple branch conductors 220 in their original state are partially located outside the outer sheath 100. In this way, the multiple branch conductors 220 can maintain stable and good contact with the myocardial tissue of the heart.

[0050] In one embodiment, the main conductor 210 is connected to a pulse generator that transmits constant-voltage electrical pulses to the main conductor 210. One end of each of the plurality of branch conductors 220 is electrically connected in parallel to the main conductor 210. This arrangement ensures that the voltages of the electrical pulses conducted by the main conductor 210 and the plurality of branch conductors 220 are equal or nearly equal. That is, the voltage input to the main conductor 210 by the pulse generator is the same as or nearly the same as the voltage conducted to the cardiac muscle by the branch conductors 220. Therefore, the operator can control the voltage of the electrical pulses delivered to the patient by the branch conductors 220 by controlling the voltage of the electrical pulses input to the pulse generator. Furthermore, different voltage electrical pulses can be used for different patients to ensure that the pacing electrode device 10 has an appropriate pacing effect.

[0051] Furthermore, since one end of each of the multiple branch conductors 220 is electrically connected in parallel to the main body 210, the voltage of any one branch conductor 220 is the same as or nearly the same as the voltage of the other branch conductors 220. This ensures that each branch conductor 220 effectively transmits electrical pulses. Consequently, as long as any one branch conductor 220 maintains good contact with the heart, the pacing electrode device 10 can stably capture the heart.

[0052] Please see Figure 2 and combined Figure 4 and Figure 5 In one embodiment, multiple branch conductors 220 are circumferentially distributed along the central axis of the outer sheath 100, and the original branch conductors 220 are bent away from the central axis of the outer sheath 100. This arrangement allows each branch conductor 220 to be well fixed to the heart from different directions on the circumference. Furthermore, in conjunction with the above embodiment, since the original branch conductors 220 are bent away from the central axis of the outer sheath 100, when changes in patient position or getting out of bed cause any one or more branch conductors 220 to have a tendency to move relative to the heart, one or more corresponding branch conductors 220 can prevent such movement. Therefore, good contact between the branch conductors 220 and the heart can be maintained, ensuring the pacing effect of the pacing electrode device 10. The correspondingly distributed branch conductors 220 can be branch conductors 220 arranged radially opposite to the branch conductors 220 with a tendency to move, or they can be adjacent to them.

[0053] It should be understood that when the multiple branch conductors 220 move from the second position to the first position, the outer sheath 100 can press against the sidewalls of each branch conductor 220. In this way, each branch conductor 220 in its original state can be retracted into the outer sheath 100 under the pressure of the outer sheath 100, so as to facilitate the delivery of the pacing electrode device 10.

[0054] Please see Figure 2 In one embodiment, the branch conductor 220 includes a first connector 223, a pedicle electrode 221, and a return electrode 222. One end of the first connector 223 is connected to the main conductor 210. The pedicle electrode 221 is disposed at the other end of the first connector 223 and is used to contact the heart when the branch conductor 220 is in its original state. The return electrode 222 is disposed on the first connector 223 and is electrically connected to the pedicle electrode 221. When the electrode assembly 200 is in the second position, both the return electrode 222 and the pedicle electrode 221 are located outside the outer sheath 100.

[0055] When the branch conductor 220 is in its original state, the head electrode 221 can contact the heart. Thus, the branch conductor 220 can conduct electrical pulses to the heart through the head electrode 221 to capture the heart and cause it to contract. Furthermore, since the return electrode 222 is electrically connected to the head electrode 221, the return electrode 222 can form an electrical pulse circuit with the head electrode 221, allowing electrical pulses to be conducted within the electrode assembly 200.

[0056] When the electrode assembly 200 is in the second position, both the loop electrode 222 and the cephalic electrode 221 are located outside the outer sheath 100. Thus, both the loop electrode 222 and the cephalic electrode 221 can be electrically connected to the human body to form a circuit. Specifically, the loop electrode 222 can directly contact the myocardium, and the loop electrode 222 conducts electrical pulses through the myocardium to form an electrical pulse circuit with the cephalic electrode 221. Alternatively, the loop electrode 222 may not directly contact the myocardium, but conducts electrical pulses through the myocardium and blood to form an electrical pulse circuit with the cephalic electrode 221.

[0057] Please see Figure 5In some embodiments, branch conductor 220 includes a first connector 223 and a head electrode 221 connected to the first connector 223. Main conductor 210 includes a second connector 211 and a loop electrode 222. One end of the first connector 223 is connected to the second connector 211. The head electrode 221 is located at the other end of the first connector 223 and is used to contact the heart when the branch conductor 220 is in its initial state. The loop electrode 222 is located on the second connector 211 near the end of the first connector 223 and is electrically connected to the head electrode 221. When the electrode assembly 200 is in the first position, both the loop electrode 222 and the head electrode 221 are located outside the outer sheath 100. Thus, the pulse generator can transmit electrical pulses to the heart through the head electrodes 221 on each branch conductor 220. Furthermore, the loop electrode 222 on the main body 210 can form a circuit with the head electrode 221 through myocardial tissue or through myocardial tissue and blood to conduct electrical pulses. By placing the loop electrode 222 on the main body 210, the number of loop electrodes 222 can be reduced, simplifying the structure of the electrode assembly 200.

[0058] Please see Figure 2 and combined Figure 4 and Figure 5 In one embodiment, the number of branch conductors 220 may specifically be, for example, six. Figure 2 The six branch conductors 220 are distributed in a circle along the central axis of the outer sheath 100. It is understood that the number of branch conductors 220 can also be set to 2, 3, 4, 5, 7, 8, 9, etc., according to actual needs, and is not limited here.

[0059] Please refer to it again. Figure 4 and Figure 5 In one embodiment, the end of the electrode assembly 200 near the heart has a smooth surface. This prevents the electrode assembly 200 from puncturing or scratching the heart or other human tissues when in contact with them. Specifically, the smooth surface may be located on the tip electrode 221 near the end furthest from the first connector 223. (See also: [link to smooth surface description]). Figure 4 and Figure 5 The standard number is Q.

[0060] In one embodiment, the control element 300 is connected to the electrode assembly 200 to drive the electrode assembly 200 to move between a first position and a second position. In other words, in this embodiment, the control element 300 is connected to the electrode assembly 200 to directly drive the electrode assembly 200 to move relative to the outer sheath 100. This allows the electrode assembly 200 to switch between a pristine state and a yielded state.

[0061] In other embodiments, the control element 300 is connected to the outer sheath 100 to drive the outer sheath 100 to move. The electrode assembly 200 moves relative to the outer sheath 100 between a first position and a second position when the outer sheath 100 is movable. That is, in this embodiment, the control element 300 is connected to the outer sheath 100, and by moving the outer sheath 100 relative to the electrode assembly 200, the electrode assembly 200 can reach the first position and the second position relative to the outer sheath 100.

[0062] It should be understood that in each embodiment, the control element 300 moves the electrode assembly 200 from the first position to the second position, or the control element 300 switches the electrode assembly 200 between the first position and the second position, including the control element 300 connecting to the outer sheath 100 and the control element 300 connecting to the electrode assembly 200.

[0063] Please refer to it again. Figure 1 In one embodiment, the pacing electrode device 10 further includes a control handle 400. The outer sheath 100 includes a pacing end 110 and a control end 120 disposed opposite to the pacing end 110. The control handle 400 is connected to the control end 120 of the outer sheath 100. The electrode assembly 200 passes through the control handle 400. A control member 300 is movably disposed on the control handle 400, and when the control member 300 moves, it moves the electrode assembly 200 between a first position and a second position. In this embodiment, it is understood that the pacing end 110 is the end that extends into the heart, and the control end 120 is the end located outside the body. The control handle 400 is connected to the control end 120 of the outer sheath 100, and the control member 300 is movably disposed on the control handle 400. With this configuration, when the pacing end 110 enters the heart, the electrode assembly 200 can be moved from the first position to the second position by moving the control member 300 relative to the control handle 400 from outside the body. This allows the electrode assembly 200 to maintain good contact with the heart in order to conduct electrical pulses.

[0064] It should be understood that the control handle 400 is connected to the control end 120 of the outer sheath 100. When the control component 300 is connected to the electrode assembly 200 to drive the electrode assembly 200, the control handle 400 is fixedly connected to the outer sheath 100. This ensures that the position of the outer sheath 100 is relatively fixed, thus pressing against the electrode assembly 200. It can be understood that at this time, the electrode assembly 200 is movably disposed within the control handle 400.

[0065] When the control component 300 is connected to the outer sheath 100 to drive the outer sheath 100 to move, the control handle 400 is slidably connected to the control end 120 of the outer sheath 100, thus facilitating the control component 300 to control the movement of the outer sheath 100. At this time, the electrode assembly 200 can be connected to the control handle 400 to ensure that the position of the electrode assembly 200 is relatively stable, preventing the electrode assembly 200 from being pushed by the pressure of the outer sheath 100 and thus unable to move the outer sheath 100 first. For example, when the electrode assembly 200 moves with the outer sheath 100, it cannot yield and be housed within the outer sheath 100 under the pressure of the outer sheath 100.

[0066] Please continue reading. Figure 1 In one embodiment, a limiting hole 410 is provided on the control handle 400. The control member 300 includes a connecting portion (not shown, the same below) and a driving portion (not shown, the same below) connected to the connecting portion. The driving portion passes through the limiting hole 410, and the driving portion slides in contact with the wall of the limiting hole 410. The connecting portion is connected to the electrode assembly 200. When the driving portion moves, it is used to move the electrode assembly 200 between a first position and a second position. The driving portion passes through the limiting hole 410, and the driving portion is connected to the connecting portion. In this way, the connecting portion can be controlled by the control member 300 to move the electrode assembly 200 between the first position and the second position. Furthermore, the sliding contact between the driving portion and the wall of the limiting hole 410 restricts the movement of the control member 300, making it easier to control the movement of the electrode assembly 200 between the first position and the second position by the control member 300.

[0067] In one embodiment, the control element 300 is rotatably disposed at one end of the control handle 400. The control element 300, located within the control handle 400, is connected to the outer sheath 100 or the electrode assembly 200, such that the electrode assembly 200 is connected in a first position and a second position.

[0068] For ease of explanation, the connection between the control component 300 and the electrode assembly 200 will be used as an example. It should be understood that the connection between the control component 300 and the outer sheath 100 is similar. Specifically, the control component 300 includes a connecting portion (not shown in the figure, the same below) and a driving portion (not shown in the figure, the same below) connected to the connecting portion. The end of the connecting portion away from the driving portion is connected to the electrode assembly 200. At least a portion of the connecting portion has external threads. The inner wall of the control handle 400 has internal threads that mate with the external threads. Thus, through the mating external and internal threads, the rotational motion of the driving portion can be converted into the reciprocating movement of the connecting portion. Therefore, by rotating the driving portion, the connecting portion can be moved relative to the control handle 400. Furthermore, the control component 300 can push or pull the electrode assembly 200 between a first position and a second position.

[0069] In one embodiment, the control handle 400 has a through hole (not shown, the same below). The control member 300 includes a connecting part (not shown, the same below), a fixing part (not shown, the same below), and a driving part (not shown, the same below). The connecting part, the fixing part, and the driving part are connected in sequence. The connecting part extends through the through hole into the control handle 400 and is connected to the electrode assembly 200. The fixing part is rotatably connected to the wall of the through hole. The driving part is located outside the control handle 400. With this configuration, the control member 300 and the wall of the through hole form a simple lever structure. The fulcrum of the rocker arm is the fixing part. That is, the driving part can drive the connecting part to rotate relative to the fixing part. Thus, the electrode assembly 200 connected to the connecting part can be moved, so that the electrode assembly 200 moves between a first position and a second position. For ease of explanation, this embodiment uses the connection between the control member 300 and the electrode assembly 200 as an example for description. It should be understood that the same applies when the control component 300 is connected to the outer sheath 100, and will not be elaborated further.

[0070] In various embodiments, the connecting portion may be specifically fitted onto the electrode assembly 200. Thus, the electrode assembly 200 can move between a first position and a second position under the driving action of the driving portion. It is understood that the connecting portion may also be selected in other ways to connect with the electrode assembly 200 or the outer sheath 100 according to actual needs, and this is not limited here.

[0071] Similarly, in other embodiments, the connecting portion may be specifically fitted onto the outer sheath 100.

[0072] In one embodiment, a mark (not shown, the same below) is provided on the outer wall of the control handle 400. The mark allows the displacement of the control member 300 relative to the control handle 400 to be determined. This facilitates control over the length of the branch conductor 220 extending from the outer sheath 100, ensuring stable and good contact between the branch conductor 220 and the heart. Specifically, the mark can be, for example, a scale, through which the distance the control member 300 has moved relative to the control handle 400 can be read.

[0073] Please see Figure 6 In one embodiment, the pacing electrode device 10 further includes a bending adjustment component 500, which is connected to the outer sheath 100 for bending the outer sheath 100. The bending adjustment component 500 can adjust the degree of bending of the outer sheath 100 to adapt to tortuous blood vessels, facilitating implantation of the outer sheath 100. The bending adjustment component 510 can be disposed on the control handle 400. Furthermore, the bending direction of the outer sheath 100 can be controlled by the bending adjustment component 500 to ensure that the electrode assembly 200 disposed within the outer sheath 100 maintains a fixed connection with the cardiac myocardium in a suitable position.

[0074] The bending assembly 500 may specifically include, for example, a bending member 510 and a connector (not shown in the figure, the same below) connected to the bending member 510. The end of the connector away from the bending member 510 is connected to the pacing terminal 110 of the outer sheath 100. With this configuration, moving the bending member 510 can pull the pacing terminal 110 of the outer sheath 100 through the connector, causing the outer sheath 100 to bend. Furthermore, the degree of bending of the outer sheath 100 can be controlled by controlling the amount of movement of the bending member 510. Of course, it should be understood that the bending assembly 500 can also be configured with other structures that can cause the outer sheath 100 to bend, depending on actual needs; this is not limited here.

[0075] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A pacing electrode device, characterized in that, The pacing electrode device includes an outer sheath, an electrode assembly, and a control unit. The electrode assembly is used to transmit electrical pulses and includes an initial state and a yielded state. The electrode assembly includes a first position and a second position relative to the outer sheath. The control unit enables the electrode assembly to move between the first position and the second position. The outer sheath is used to convert the electrode assembly from the initial state to the yielded state when the electrode assembly moves from the second position to the first position. The electrode assembly in the yielded state is located inside the outer sheath, and the electrode assembly in the initial state is partially located outside the outer sheath, and the electrode assembly in the initial state can maintain contact with the heart. The electrode assembly includes multiple branch conductors, which are bent away from the central axis of the outer sheath in the original state. Each branch conductor can conduct electrical pulses. Each branch conductor includes a first connector, a head electrode, and a return electrode. The head electrode and the return electrode are both disposed on the first connector. The head electrode is used to contact the heart when the branch conductor is in the original state. When the electrode assembly is in the second position, both the circuit electrode and the head electrode are located outside the outer sheath, and both the circuit electrode and the head electrode can be electrically connected to the human body to form a circuit.

2. The pacing electrode device according to claim 1, characterized in that, When the electrode assembly is in its original state, it bends away from the central axis of the outer sheath. When the electrode assembly moves from the second position to the first position, the outer sheath can press against the side wall of the electrode assembly.

3. The pacing electrode device according to claim 1, characterized in that, The electrode assembly includes a main body, one end of each of the plurality of branch conductors being connected to the main body for conducting electrical pulses, and the other end of the plurality of branch conductors being used to maintain contact with the heart.

4. The pacing electrode device according to claim 3, characterized in that, The multiple branch conductors are distributed circumferentially along the central axis of the outer sheath.

5. The pacing electrode device according to claim 3, characterized in that, One end of the first connector is connected to the main body, the head electrode is located at the other end of the first connector, and the circuit electrode is electrically connected to the head electrode.

6. The pacing electrode device according to claim 3, characterized in that, The main conductor is connected to a pulse generator that sends constant voltage pulses to the main conductor, and one end of each of the plurality of branch conductors is electrically connected in parallel to the main conductor.

7. The pacing electrode device according to claim 1, characterized in that, The control element is connected to the electrode assembly to drive the electrode assembly to move between the first position and the second position; or, the control element is connected to the outer sheath to drive the outer sheath to move, and the electrode assembly is able to move relative to the outer sheath between the first position and the second position when the outer sheath moves.

8. The pacing electrode device according to claim 7, characterized in that, The pacing electrode device further includes a control handle. The outer sheath includes a pacing end and a control end disposed opposite to the pacing end. The control handle is connected to the control end of the outer sheath. The electrode assembly passes through the control handle. The control element is movably disposed on the control handle. When the control element moves, it is used to move the electrode assembly between a first position and a second position.

9. The pacing electrode device according to claim 8, characterized in that, The control handle has a limiting hole. The control component includes a connecting part and a driving part connected to the connecting part. The driving part passes through the limiting hole and slides with the wall of the limiting hole. The connecting part is connected to the electrode assembly or the connecting part is connected to the outer sheath. When the driving part moves, it is used to move the electrode assembly between the first position and the second position.

10. The pacing electrode device according to claim 9, characterized in that, The outer wall of the control handle is marked.

11. The pacing electrode device according to claim 1, characterized in that, The pacing electrode device also includes a bending adjustment assembly connected to the outer sheath for bending the outer sheath.

12. The pacing electrode device according to claim 11, characterized in that, The outer sheath includes a pacing end and a control end disposed opposite to the pacing end. The pacing end is one end that is inserted into the heart, and the control end is one end located outside the human body. The bending assembly includes a bending member and a connector connected to the bending member. The end of the connector away from the bending member is connected to the pacing terminal. When the bending member moves, it can pull the pacing terminal through the connector, causing the outer sheath to bend.

13. A pacing device, characterized in that, The pacing device includes: The pacing electrode device as described in any one of claims 1 to 12; A pulse generator, electrically connected to the electrode assembly, is used to provide electrical pulses to the electrode assembly.

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