Electrode guide wire capable of being used for mapping and treatment

Abstract

The invention belongs to the field of medical instruments, and particularly relates to an electrode guide wire capable of being used for mapping and treatment, which comprises a tube body, a patient end electrode, a wire, a first winding wire and a second winding wire, the patient end electrode is arranged on the side wall of the far end of the tube body; the wire is arranged in the tube body, one end of the wire is connected with the patient end electrode, and the other end of the wire extends out of the near end of the tube body. The first winding wire and the second winding wire are both spiral and are arranged in the tube body, the first winding wire is arranged on the side, facing the near end, of the patient end electrode, one end of the second winding wire is connected with the first winding wire, and the other end of the second winding wire is arranged at the tip of the far end of the tube body; the first winding wire is plastic; the second winding wire and the first winding wire are made of the same material or different materials. The electrode guide wire capable of being used for mapping and treatment can be used for collecting coronary sinus and coronary vein far-end electric signals, is high in adaptability and can be used in cooperation with a mapping electrode catheter, and the collection position can be increased.

Description

Technical Field

[0001] The invention belongs to the field of medical devices, and in particular relates to an electrode guide wire that can be used for mapping and treatment. Background Art

[0002] In recent years, with the widespread clinical application of radiofrequency ablation and cardiac resynchronization therapy, the coronary venous system (CVS) has received attention and concern. However, the anatomical variation of the coronary venous system is large, the adjacent structures are complex, the course is tortuous, and there are many branches. According to its opening location, the thickness of the blood vessels, and the location of blood returning to the ventricle, it can be divided into: coronary sinus (CS), great cardiac vein (GCV), middle cardiac vein (MCV), small cardiac vein (SIV), anterior interventricular vein (AIV), posterior left ventricular vein, and lateral left ventricular vein. The coronary vein starts from the coronary sinus, which is the opening location for the catheter to enter. The great cardiac vein connected to the coronary sinus has the longest course and the largest diameter. It is the conventional site for placing the coronary sinus electrode and the conventional mapping site for the ablation catheter. Its distal end is connected to the anterior interventricular vein. The anterior interventricular vein runs in the anterior interventricular groove. Because it forms a steep angle with the great cardiac vein, it is often difficult to reach with mapping and ablation catheters, which makes it difficult to map and ablate ventricular premature beats. Recent studies have shown that the proportion of idiopathic ventricular arrhythmias (IVA) originating from the epicardium of the coronary veins is 9% to 15%, and the success rate of ablation varies, ranging from about 50% to 70%. The main reason is that there is currently no effective means to map and ablate the distal coronary sinus veins.

[0003] Electrophysiological mapping of the coronary sinus and coronary vein plays a very important role. Many electrophysiological examinations require the placement of coronary sinus electrodes, such as left epicardial bypass, epicardial premature ventricular beats and complex atrial fibrillation, which require ablation in the coronary veins. The left ventricular electrode of cardiac resynchronization therapy (CRT) is also placed in the coronary veins. How to increase the stability of the coronary sinus electrode position and effectively collect the electrical signals at the distal end of the coronary vein, and to reach the depth of the coronary sinus vein that conventional mapping catheters cannot penetrate. This has always been an important research topic in this field. Summary of the invention

[0004] The present invention provides an electrode guide wire that can be used for mapping and treatment and can effectively solve the problems in the background technology.

[0005] The present invention provides an electrode guide wire that can be used for mapping and treatment, comprising a tube body, a patient-end electrode, a guide wire, a first wire winding and a second wire winding;

[0006] The patient end electrode is arranged on the side wall of the distal end of the tube body; the wire is arranged in the tube body, one end of the wire is connected to the patient end electrode, and the other end of the wire extends from the proximal end of the tube body;

[0007] The first wire wrap and the second wire wrap are both spiral and arranged in the tube body. The first wire wrap is arranged on the side of the patient-end electrode facing the proximal end, one end of the second wire wrap is connected to the first wire wrap, and the other end of the second wire wrap is arranged at the end of the distal end of the tube body; the first wire wrap is plastic; the second wire wrap and the first wire wrap are made of the same material or different materials.

[0008] As a further optimization of the present invention, the electrode guide wire is a bipolar guide wire, wherein the patient-end electrode includes a patient-end first electrode and a patient-end second electrode, and the lead includes a first lead and a second lead;

[0009] The first electrode at the patient end and the second electrode at the patient end are arranged on the side wall of the distal end of the tube body at intervals; the first wire and the second wire are both arranged in the tube body, one end of the first wire and the second wire are respectively connected to the first electrode at the patient end and the second electrode at the patient end, and the other ends of the first wire and the second wire extend from the proximal end of the tube body; the first wire winding is arranged between the first electrode at the patient end and the second electrode at the patient end.

[0010] As a further optimization of the present invention, the first winding wire is made of stainless steel; and the second winding wire is made of tungsten wire.

[0011] As a further optimization of the present invention, it also includes a core wire of nickel-titanium alloy; the core wire is arranged in the tube body; the first wire winding and the second wire winding are wound around the core wire.

[0012] As a further optimization of the present invention, the patient-end electrode is ring-shaped and made of stainless steel or platinum-iridium alloy.

[0013] As a further optimization of the present invention, a wrapping layer made of TPU material is provided at the distal end of the tube body from the first electrode at the patient end to the end.

[0014] As a further optimization of the present invention, a socket end electrode is also provided on the side wall of the proximal end of the tube body; the other end of the wire is connected to the socket end electrode.

[0015] As a further optimization of the present invention, it also includes a mapping electrode catheter; the mapping electrode catheter includes a body, an electrode ring and an electrode wire;

[0016] The body comprises a hollow inner layer and an outer layer sleeved outside the inner layer; the electrode ring is sleeved on the outer layer side wall at the distal end of the body; the electrode wire is arranged between the inner layer and the outer layer of the body, the electrode wire corresponds to the electrode ring, one end of the electrode wire is connected to the electrode ring, and the other end of the electrode wire extends from the proximal end of the body;

[0017] The tube body extends into the main body and the patient end electrode is exposed from the distal end of the main body.

[0018] As a further optimization of the present invention, it also includes a guide wire plug, which includes a housing, a compression spring, a pressure block, a hose and a conductor;

[0019] The shell is provided with a cavity, and a pressing part is provided on the shell; a compression spring is provided in the cavity; a pressure block is pressed on the compression spring, and the pressure block also corresponds to the pressing part; a hose passes through the pressure block; the conductors pass through the hose from the sides of the pressure block respectively; a conductive wire extends from one end of the shell into the cavity and is connected with the conductor; the proximal end of the electrode guide wire is inserted into the hose from the other end of the shell, and the socket end electrode contacts the conductor located in the hose;

[0020] Under the action of the compression spring, the hose bends from a straight state; by pressing the pressure block, the hose can return to a straight state.

[0021] An electrode guide wire that can be used for mapping and treatment according to claim 1 is characterized in that the diameter of the dual-stage guide wire is 0.014-0.035 inches.

[0022] The present invention provides an electrode guide wire that can be used for mapping and treatment, can collect electrical signals from the coronary sinus and the distal end of the coronary vein, has strong adaptability, and can increase the number of collection positions when used in conjunction with a mapping electrode catheter.

[0023] Instruction Manual

[0024] Figure 1 This is a schematic diagram of the structure of the first embodiment;

[0025] Figure 2 This is a schematic diagram of the guide wire plug structure of the first embodiment;

[0026] Among them, the tube body 1, the first electrode 2 at the patient end, the second electrode 3 at the patient end, the first wire 4, the second wire 5, the first wire winding 6, the second wire winding 7, the first electrode 8 at the socket end, the second electrode 9 at the socket end, the core wire 10, the pressing block 11, the hose 12, and the conductor 13. DETAILED DESCRIPTION

[0027] Example 1

[0028] like Figure 1 As shown, the present invention provides an electrode guide wire that can be used for mapping and treatment. The electrode guide wire adopts a bipolar guide wire, including a tube body 1, a first electrode 2 at the patient end, a second electrode 3 at the patient end, a first wire 4, a second wire 5, a first wire winding 6 and a second wire winding 7.

[0029] The tube body 1 is hollow, and in order to enhance the rigidity of the tube body 1, a core wire 10 is provided in the tube body 1, and the core wire 10 is made of a nickel-titanium alloy material with good plastic deformation recovery performance. The diameter of the tube body is 0.014, 0.018 or 0.035 inches.

[0030] The first patient-side electrode 2 and the second patient-side electrode 3 are arranged at intervals on the side wall of the distal end of the tube body 1. The first patient-side electrode 2 and the second patient-side electrode 3 are sleeved on the distal end of the tube body 1 in a thin-walled ring structure. In this embodiment, the first patient-side electrode 2 and the second patient-side electrode 3 are made of 304 stainless steel, and in other embodiments, platinum-iridium alloy material can also be used.

[0031] The first wire 4 and the second wire 5 are both arranged in the tube body 1, one end of the first wire 4 and the second wire 5 are respectively connected to the first electrode 2 and the second electrode 3 at the patient end, and the other ends of the first wire 4 and the second wire 5 extend from the proximal end of the tube body 1.

[0032] In this embodiment, the first electrode 8 and the second electrode 9 at the socket end are also provided at the proximal end of the catheter, which correspond to the first electrode 2 and the second electrode 3 at the patient end. The first electrode 8 and the second electrode 9 at the socket end also adopt a thin-walled ring structure and are sleeved at the proximal end of the tube body 1. The other ends of the first wire 4 and the second wire 5 are respectively connected to the first electrode 8 and the second electrode 9 at the socket end. Then, the socket is externally connected through the first electrode 8 and the second electrode 9 at the socket end.

[0033] Under the above structure, the ends of the first wire 4 and the second wire 5 are respectively connected to the inner walls of the first electrode 2 at the patient end, the second electrode 3 at the patient end, the first electrode 8 at the socket end, and the second electrode 9 at the socket end, so that all the joint parts can be hidden. When an external device is needed, the lead wires are directly pulled out from the proximal end of the tube body 1, that is, the first electrode 8 at the socket end and the second electrode 9 at the socket end of the operating end of the tube body 1, and connected to the device, or the leads on the device are connected to the first electrode 8 at the socket end and the second electrode 9 at the socket end.

[0034] The ECG signals collected by the first patient-side electrode 2 and the second patient-side electrode 3 are transmitted through the first socket-side electrode 8 and the second socket-side electrode 9. The first wire 4 and the second wire 5 of this embodiment are made of copper wire. In other embodiments, the first wire 4 and the second wire 5 may also be made of wires of other materials.

[0035] The first wire wrap 6 and the second wire wrap 7 are both arranged in the tube body 1 and spirally wound on the core wire 10. The first wire wrap 6 is arranged between the first electrode 2 at the patient end and the second electrode 3 at the patient end. One end of the second wire wrap 7 is connected to the end of the first wire wrap 6, and the other end of the second wire wrap 7 is wound to the end at the distal end of the tube body 1. In this embodiment, the area formed by the first wire wrap 6 is a plastic area. The first wire wrap 6 is made of 304 stainless steel. The initial state of the plastic area is a linear state. When in use, the operator can bend the area into a desired shape according to needs. The second wire wrap 7 is made of tungsten wire, and the spiral radius of the second wire wrap 7 from the end connected to the first wire wrap 6 to the end toward the distal end of the tube body 1 becomes smaller and smaller, that is, the second wire wrap 7 is formed into an increasingly thinner shape as a whole from the direction toward the proximal end of the tube body 1 to the direction toward the distal end of the tube body 1.

[0036] Because the heart structures of different patient groups are different, the position of the coronary sinus ostium is not fixed. They have different shapes and positions. In order to facilitate the operation, the double-stage guide wire in this embodiment can be used to adjust the bending shape according to the heart structure characteristics of different groups of people, so that the double-stage guide wire can better enter the coronary sinus ostium, reducing the difficulty of operation for doctors during the operation.

[0037] In another embodiment, the second wire wrap 7 and the first wire wrap 6 are made of the same material, that is, the second wire wrap 7 and the first wire wrap 6 are made of one wire wrap, or the first wire wrap 6 is also used as the second wire wrap 7. This embodiment can avoid the connection problem between wire wraps of different materials.

[0038] In this embodiment, a wrapping layer made of TPU material is also provided at the distal end of the tube body 1 from the first electrode 2 at the patient end to the end. This material not only has a soft touch, but also has the effect of effectively preventing moisture from penetrating.

[0039] Furthermore, this embodiment is also provided with a mapping electrode catheter, which includes a body, an electrode ring and an electrode wire.

[0040] The main body is hollow and comprises a hollow inner layer and an outer layer sleeved outside the inner layer.

[0041] A plurality of electrode rings arranged at intervals are sleeved on the outer side wall of the distal end of the body. The electrode rings are all made of platinum-iridium alloy. In other embodiments, only one electrode ring may be used, and the electrode ring may also be made of other materials such as 304 stainless steel.

[0042] The electrode wires are arranged between the inner layer and the outer layer of the body. In this embodiment, the number of electrode wires arranged is corresponding to the number of electrode rings. One end of each electrode wire is connected to an electrode ring, and the other end of the electrode wire extends from the proximal end of the catheter and is connected to the electrode plug.

[0043] This embodiment adopts a body with a hollow structure, which facilitates the insertion of a double-stage guide wire. Since an inner layer is provided to isolate the double-stage guide wire, the medical tool will not affect the guide wire during the insertion or removal process.

[0044] This embodiment is used for intracardiac mapping, especially for measuring electrophysiological signals of the filling vein and the distal end of the coronary vein, and the two-stage guidewire can penetrate into the distal end of the coronary sinus to measure the potential of the left atrium or right ventricle. Therefore, the mapping electrode catheter and the two-stage guidewire can be used in conjunction with each other to expand the measurement of potential and collect more comprehensive data. The mapping electrode catheter and the two-stage guidewire can also use differentiated bends in the bend section to collect more points. At the same time, it can be used for discharge.

[0045] like Figure 2 As shown, this embodiment also provides a guide wire plug, which includes a housing, a compression spring, a pressure block 11, a hose 12 and a conductor 13.

[0046] The shell is provided with a cavity, and a pressing portion is provided on the shell. A compression spring is provided in the cavity, one end of the compression spring is fixed at the bottom of the cavity, and the other end of the compression spring faces the pressing portion. A pressing block 11 is pressed on the other end of the compression spring, and the top end of the pressing block 11 is provided at the pressing portion. Pressing the pressing portion can cause the pressing block 11 to press the compression spring.

[0047] The hose 12 passes through the pressing block 11. There are two conductors 13, which pass through the hose 12 from both sides of the pressing block 11. Both conductors 13 are connected with conductive wires, and the conductive wires extend from one end of the shell to the shell and are connected to the device. The proximal end of the two-stage guide wire is inserted into the hose 12 from the other end of the shell, and the first electrode 8 at the socket end and the second electrode 9 at the socket end are respectively in contact with the two conductors 13 located in the hose 12.

[0048] Under the action of the compression spring, the hose 12 bends from a straight state; by pressing the pressing block 11, the hose 12 can return to a straight state.

[0049] When in use, after the double-stage guide wire is inserted into the hose 12, the hose 12 is bent upward from a straight state to a bridge shape under the action of the compression spring, and the double-stage guide wire cannot be pulled out at this time. If you want to pull out the double-stage guide wire, you only need to press the pressing part to make the pressing block 112 sink to overcome the spring force, so that the hose 12 returns to a straight state, and the double-stage guide wire can be easily pulled out.

[0050] Example 2

[0051] This embodiment is basically the same as the embodiment 1, except that the electrode guide wire of this embodiment adopts a single electrode guide wire, and therefore, compared with the embodiment 1, the second electrode 3 and the second lead wire 5 at the patient end are not provided.

[0052] The first electrode 2 at the patient end of the single-electrode guide wire is arranged on the side wall of the distal end of the tube body 1; the first wire 4 is arranged in the tube body 1, one end of the first wire 4 is connected to the first electrode 2 at the patient end, and the other end of the first wire 4 extends from the proximal end of the tube body 1; the first wire winding 6 is arranged on the side of the first electrode 2 at the patient end facing the proximal end.

[0053] When used in conjunction with a mapping electrode catheter, only the first electrode 2 at the patient end of the monopolar guidewire is exposed from the distal end of the body.

[0054] In addition, in this embodiment, only the first socket-end electrode 8 is disposed on the side wall of the proximal end of the tube body 1 , and the other end of the first wire 4 is connected to the first socket-end electrode 8 .

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. An electrode guide wire that can be used for mapping and treatment, characterized in that: It includes a tube body, a patient end electrode, a wire, a first wire winding and a second wire winding; The patient end electrode is arranged on the side wall of the distal end of the tube body; the wire is arranged in the tube body, one end of the wire is connected to the patient end electrode, and the other end of the wire extends from the proximal end of the tube body; The first wire wrap and the second wire wrap are both spiral and arranged in the tube body. The first wire wrap is arranged on the side of the patient-end electrode facing the proximal end, one end of the second wire wrap is connected to the first wire wrap, and the other end of the second wire wrap is arranged at the end of the distal end of the tube body; the first wire wrap is plastic; the second wire wrap and the first wire wrap are made of the same material or different materials.

2. The electrode guide wire that can be used for mapping and treatment according to claim 1, characterized in that: The electrode guide wire is a bipolar guide wire, wherein the patient-end electrode includes a first patient-end electrode and a second patient-end electrode, and the lead includes a first lead and a second lead; The first electrode at the patient end and the second electrode at the patient end are arranged on the side wall of the distal end of the tube body at intervals; the first wire and the second wire are both arranged in the tube body, one end of the first wire and the second wire are respectively connected to the first electrode at the patient end and the second electrode at the patient end, and the other ends of the first wire and the second wire extend from the proximal end of the tube body; the first wire winding is arranged between the first electrode at the patient end and the second electrode at the patient end.

3. The electrode guide wire that can be used for mapping and treatment according to claim 1, characterized in that: The first winding wire is made of stainless steel; the second winding wire is made of tungsten wire.

4. The electrode guide wire that can be used for mapping and treatment according to claim 1, characterized in that: It also includes a core wire of nickel-titanium alloy; the core wire is arranged in the tube body; the first wire wrap and the second wire wrap are wound around the core wire.

5. The electrode guide wire that can be used for mapping and treatment according to claim 1, characterized in that: The patient-side electrode is ring-shaped and made of stainless steel or platinum-iridium alloy.

6. The electrode guide wire that can be used for mapping and treatment according to claim 1, characterized in that: The distal end of the tube body is provided with a wrapping layer of TPU material from the first electrode at the patient end to the end.

7. The electrode guide wire that can be used for mapping and treatment according to claim 1, characterized in that: A socket end electrode is also arranged on the side wall of the proximal end of the tube body; the other end of the wire is connected to the socket end electrode.

8. The electrode guide wire that can be used for mapping and treatment according to claim 1, characterized in that: Also included is a mapping electrode catheter; the mapping electrode catheter includes a body, an electrode ring and an electrode wire; The body comprises a hollow inner layer and an outer layer sleeved outside the inner layer; the electrode ring is sleeved on the outer layer side wall at the distal end of the body; the electrode wire is arranged between the inner layer and the outer layer of the body, the electrode wire corresponds to the electrode ring, one end of the electrode wire is connected to the electrode ring, and the other end of the electrode wire extends from the proximal end of the body; The tube body extends into the main body and the patient end electrode is exposed from the distal end of the main body.

9. The electrode guide wire that can be used for mapping and treatment according to claim 7, characterized in that: Also included is a guide wire plug, which includes a housing, a compression spring, a pressure block, a hose and a conductor; The shell is provided with a cavity, and a pressing part is provided on the shell; a compression spring is provided in the cavity; a pressure block is pressed on the compression spring, and the pressure block also corresponds to the pressing part; a hose passes through the pressure block; the conductors pass through the hose from the sides of the pressure block respectively; a conductive wire extends from one end of the shell into the cavity and is connected with the conductor; the proximal end of the electrode guide wire is inserted into the hose from the other end of the shell, and the socket end electrode contacts the conductor located in the hose; Under the action of the compression spring, the hose bends from a straight state; by pressing the pressure block, the hose can return to a straight state.

10. The electrode guide wire that can be used for mapping and treatment according to claim 1, characterized in that: The diameter of the dual-stage guidewire is 0.014-0.035 inches.

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