CN117958957A - Defibrillation catheter and defibrillation system - Google Patents
Defibrillation catheter and defibrillation system Download PDFInfo
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- CN117958957A CN117958957A CN202410177073.1A CN202410177073A CN117958957A CN 117958957 A CN117958957 A CN 117958957A CN 202410177073 A CN202410177073 A CN 202410177073A CN 117958957 A CN117958957 A CN 117958957A
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- 238000005452 bending Methods 0.000 claims description 22
- 230000003014 reinforcing effect Effects 0.000 claims description 22
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 15
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 15
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 14
- 239000004417 polycarbonate Substances 0.000 claims description 14
- 229920002530 polyetherether ketone Polymers 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 10
- 239000004642 Polyimide Substances 0.000 claims description 7
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims description 7
- 239000012994 photoredox catalyst Substances 0.000 claims description 7
- 229920000515 polycarbonate Polymers 0.000 claims description 7
- 229920001721 polyimide Polymers 0.000 claims description 7
- -1 polytetrafluoroethylene Polymers 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 6
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 10
- 238000013461 design Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 238000001727 in vivo Methods 0.000 description 5
- 210000003748 coronary sinus Anatomy 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 206010003658 Atrial Fibrillation Diseases 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 238000007493 shaping process Methods 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 206010003662 Atrial flutter Diseases 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000013194 cardioversion Methods 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 210000004115 mitral valve Anatomy 0.000 description 1
- 210000005245 right atrium Anatomy 0.000 description 1
- 210000005241 right ventricle Anatomy 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Electrotherapy Devices (AREA)
Abstract
The application relates to the technical field of defibrillation. The application provides a defibrillation catheter which is a single-cavity tube, wherein the inside of a lumen of the defibrillation catheter is provided with: a plurality of first electrode leads wrapped with a first electrode lead sleeve and a plurality of second electrode leads wrapped with a second electrode lead sleeve; a bend control assembly; and a support sheet extending from the lumen of the head end tube to the end of the controlled bend of the defibrillation catheter, the support sheet being wrapped with an insulating sleeve. The defibrillation catheter provided by the application has the advantages of simplifying the structural complexity, saving the raw material cost, reducing the manufacturing difficulty and enhancing the supporting, torque transmitting and insulating effects.
Description
Technical Field
The application relates to the technical field of defibrillation, in particular to a defibrillation catheter and a defibrillation system.
Background
The electrocardiographic mapping of coronary sinus and coronary vein has important function. Many electrophysiological examinations require the placement of coronary sinus electrodes, and in-vitro cardioversion is required once the irrevocable atrial fibrillation/flutter is initiated at the time of atrial fibrillation ablation. While external defibrillation requires the delivery of 100-360J of energy, it is particularly inefficient to reach the heart due to contact resistance and resistance of the body.
The in-vivo defibrillation catheter can achieve the aim of in-vivo defibrillation by applying energy of 0-30J in the body. Because defibrillation catheters in the body apply defibrillation energy in the body, which can reach voltages of several hundred volts, very reliable insulation between the wires within the catheter is required. An existing in-vivo defibrillation catheter is characterized in that a head end pipe with a 4-cavity is connected with a main body pipe. The structure of the multi-lumen tube is very complex by isolating the positive and negative poles of the lead. In addition, the raw material costs and manufacturing difficulties required for the design of such multilumen tubing are relatively large. In addition, two groups of wires need to be respectively penetrated into cavities with different lengths in a very thin cavity, and the operation is complex.
Disclosure of Invention
To overcome at least some of the problems associated with the related art, embodiments of the present application provide a defibrillation catheter. The defibrillation catheter includes a head end tube, a body tube, and a handle. One end of the main body pipe is connected with the head end pipe, and the other end of the main body pipe is connected with the handle. The head end tube is provided with a first electrode group and a second electrode group. The first electrode group and the second electrode group are applied with a voltage at the time of defibrillation.
The defibrillation catheter is a single-lumen tube, and the inside of the lumen of the defibrillation catheter is provided with:
A plurality of first electrode leads respectively connected with a plurality of electrodes in the first electrode group and a plurality of second electrode leads respectively connected with a plurality of electrodes in the second electrode group, the plurality of first electrode leads and the plurality of second electrode leads extending from the lumen of the head end tube through the lumen of the body tube and further to the handle, the plurality of first electrode leads being externally wrapped with a first electrode lead sleeve and the plurality of second electrode leads being externally wrapped with a second electrode lead sleeve;
a bend control assembly extending from within the lumen of the head end tube through the lumen of the body tube and further to the handle where the defibrillation catheter torsion is controlled by the bend control assembly; and
And the supporting sheet extends from the inner cavity of the tube cavity of the head end tube to the tail end of the control bending shape of the defibrillation catheter, and the supporting sheet is wrapped with an insulating sleeve.
Further, a reinforcing lining pipe is further arranged in the lumen of the defibrillation catheter, the reinforcing lining pipe is arranged at the joint of the head end pipe and the main body pipe, and the outer wall of the reinforcing lining pipe is fixedly arranged on the inner wall of the lumen of the head end pipe and the inner wall of the lumen of the main body pipe.
Further, the support tab is disposed between the first and second electrode lead casings and the bend control assembly to separate the first and second electrode leads from the bend control assembly.
Further, opposite side walls of the insulating sleeve abut against the reinforcing liner.
Further, the width of the supporting sheet is 0.8-1.5mm, and the thickness of the supporting sheet is 0.06-0.15mm.
Further, the material of the first electrode lead sheath, the second electrode lead sheath, or the insulating sheath is selected from the group consisting of: polytetrafluoroethylene PTFE, polyimide PI, polycarbonate PC, or polyetheretherketone PEEK.
Further, the outer wall of the reinforced lining pipe is fixed on the inner wall of the cavities of the head end pipe and the main body pipe in a mechanical structure fixing, bonding or welding mode.
Further, the reinforcing liner tube is of a material selected from the group consisting of: polytetrafluoroethylene PTFE, polyimide PI, polycarbonate PC, or polyetheretherketone PEEK.
Further, the head end pipe and the main body pipe are integrally formed, and the diameters of the head end pipe and the main body pipe are the same.
The embodiment of the application also provides a defibrillation system. The defibrillation system includes: a defibrillation catheter as described above, and a defibrillation power supply connected to the first electrode group and the second electrode group through the first electrode lead and the second electrode lead, the defibrillation power supply for applying a voltage to the first electrode group and the second electrode group at the time of defibrillation.
According to the above embodiment of the present application, the defibrillation catheter includes a head tube, a body tube, and a handle, one end of the body tube is connected to the head tube, the other end is connected to the handle, the head tube is provided with a first electrode group and a second electrode group, and a voltage is applied to the first electrode group and the second electrode group during defibrillation. The defibrillation catheter is a single-lumen tube, and the inside of the lumen of the defibrillation catheter is provided with: a plurality of first electrode leads respectively connected with a plurality of electrodes in the first electrode group and a plurality of second electrode leads respectively connected with a plurality of electrodes in the second electrode group, the plurality of first electrode leads and the plurality of second electrode leads extending from the lumen of the head end tube through the lumen of the body tube and further to the handle, the plurality of first electrode leads being externally wrapped with a first electrode lead sleeve and the plurality of second electrode leads being externally wrapped with a second electrode lead sleeve; a bend control assembly extending from within the lumen of the head end tube through the lumen of the body tube and further to the handle where the defibrillation catheter torsion is controlled by the bend control assembly; and a support sheet extending from the lumen of the head end tube to the end of the controlled bend of the defibrillation catheter, the support sheet being wrapped with an insulating sleeve. The embodiment of the application firstly adopts a single-cavity tube design, and adopts a plurality of groups of insulating sleeves in the single-cavity tube to realize insulation among internal pipelines, thereby simplifying the structure complexity, saving the raw material cost, reducing the manufacturing difficulty and avoiding the complex multi-cavity tube design in the prior art on the premise of realizing the same insulating effect. Secondly, through the supporting sheet, the supporting and torque transmission functions can be better played, and the insulation effect is further enhanced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.
Fig. 1 shows a schematic diagram of a defibrillation catheter according to an embodiment of the present application.
Fig. 2 shows a partial cross-sectional view of the head end tube and the body tube of the defibrillation catheter shown in fig. 1, taken along the central axis of the direction of extension of the catheter.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the spirit of the present disclosure will be clearly described in the following drawings and detailed description, and any person skilled in the art, after having appreciated the embodiments of the present disclosure, may make alterations and modifications by the techniques taught by the present disclosure without departing from the spirit and scope of the present disclosure.
The exemplary embodiments of the present application and the descriptions thereof are intended to illustrate the present application, but not to limit the present application. In addition, the same or similar reference numerals are used for the same or similar parts in the drawings and the embodiments.
The terms "first," "second," …, etc. as used herein do not denote a particular order or sequence, nor are they intended to limit the application, but rather are merely used to distinguish one element or operation from another in the same technical term.
As used herein, the terms "comprising," "including," "having," "containing," and the like are intended to be inclusive and mean an inclusion, but not limited to.
As used herein, "and/or" includes any or all combinations of such things.
Reference herein to "a plurality" includes "two" and "more than two"; the term "plurality of sets" as used herein includes "two sets" and "more than two sets".
Certain words used to describe the application will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the application.
An existing in-vivo defibrillation catheter is characterized in that a head end pipe with a 4-cavity is connected with a main body pipe. The structure of the multi-lumen tube is very complex by isolating the positive and negative poles of the lead. In addition, the raw material costs and manufacturing difficulties required for the design of such multilumen tubing are relatively large. In addition, two groups of wires need to be respectively penetrated into cavities with different lengths in a very thin cavity, and the operation is complex.
In particular, one existing in vivo defibrillation catheter is a ten-pole steerable catheter. The use method comprises the steps of firstly placing the catheter in the right ventricle, then pushing the push button on the handle upwards, bending the catheter to the six o' clock direction of the mitral valve annulus, slowly withdrawing the catheter, and simultaneously rotating the push button clockwise, so that the catheter can be scratched into the coronary sinus. Finally, the catheter can be delivered to the deep coronary sinus by slowly pushing the catheter and simultaneously rotating the push button on the handle clockwise with a small amplitude.
However, because of the small diameter of the catheter itself, if a four lumen tube is formed inside the catheter, a Reflow (Reflow) process is required, and thus the internal clearance of the catheter is small. The group of wires need to pass out from a very narrow space, meanwhile, because the catheter is a 4-cavity catheter, the wires with one cavity and the bending control wires are on opposite sides, so that when the bending is controlled, the group of wires are under tensile force, and because the inner holes are very small, the redundant wire length cannot be reserved in the catheter, the wires on the opposite sides can obstruct the bending control of the catheter, the bending control force is larger, and the catheter has snaking bending. Meanwhile, due to the tensile force, the group of wires are easily broken to cause broken wires, so that the catheter cannot map the electric signals at the corresponding positions.
The application provides a defibrillation catheter which adopts a single-cavity tube design, and adopts a plurality of groups of insulating sleeves in the single-cavity tube to realize insulation between internal pipelines, so that the structural complexity is simplified, the raw material cost is saved, and the manufacturing difficulty is reduced.
Fig. 1 shows a schematic diagram of a defibrillation catheter according to an embodiment of the present application.
As shown in fig. 1, the defibrillation catheter includes a head tube, a body tube, and a handle. One end of the main body pipe is connected with the head end pipe, and the other end of the main body pipe is connected with the handle. The outer side of the head end pipe is provided with a first electrode group and a second electrode group. The two groups of electrodes are respectively and correspondingly arranged in different body positions during defibrillation. During defibrillation, a voltage is applied to the first electrode group and the second electrode group to perform electrical defibrillation.
The head end pipe and the main body pipe can be integrally formed, or can be combined together after being formed respectively.
The diameters of the head end tube and the main body tube may be the same or different.
Fig. 2 shows a partial cross-sectional view of the head end tube and the body tube of the defibrillation catheter shown in fig. 1, taken along the central axis of the direction of extension of the catheter.
In an embodiment of the application, the defibrillation catheter is a single lumen tube. In the prior art, it is necessary to make a multi-lumen tube inside the catheter, which requires a complicated reflow soldering process. In addition, the design of multicavity pipe among the prior art, when accuse bending, the electrode lead can receive the pulling force, again because inside hole is very little can't keep unnecessary wire length in the pipe inside, leads to the electrode lead can hinder the pipe accuse bending, and accuse bending force is bigger can the pipe appear snakelike bending, simultaneously because receive the pulling force effect, this group wire is broken again easily and is led to the broken wire. The embodiment of the application adopts the single-cavity tube, has simple manufacturing process and low cost, and is easier to form the catheter with stable size.
A plurality of first electrode leads respectively connected with a plurality of electrodes in the first electrode group and a plurality of second electrode leads respectively connected with a plurality of electrodes in the second electrode group are arranged in the lumen of the defibrillation catheter. A plurality of first electrode leads and a plurality of second electrode leads extend from the lumen of the head end tube of the defibrillation catheter through the lumen of the body tube and further to the handle. The first and second electrode leads may then be connected to a defibrillation power supply at the rear end of the handle to be energized for electrical defibrillation during defibrillation.
In the embodiment of the application, the plurality of first electrode lead wires are wrapped with the first electrode lead wire sleeve. Also, a plurality of second electrode lead wires are wrapped with a second electrode lead wire sleeve. The first and second electrode lead sleeves are each insulated to insulate the first and second electrode leads and to insulate the first and second electrode leads from other components within the lumen.
In one embodiment, the plurality of first electrode leads may be gathered into a bundle and then nested into a first electrode lead sheath that is prepared in advance. The first electrode lead sheath may be made by a cutting, shaping, bonding step. Also, the plurality of second electrode leads may be gathered into a bundle and then nested into the previously prepared second electrode lead sheath. The second electrode lead sheath may be made by a cutting, shaping, bonding step.
In one embodiment, the materials of the first electrode lead sheath and the second electrode lead sheath may be selected from: polytetrafluoroethylene PTFE, polyimide PI, polycarbonate PC, or polyetheretherketone PEEK. The materials have good insulating performance and can play a good role in insulation.
The material of the first electrode lead sheath and the material of the second electrode lead sheath may be the same or different.
In this way, through the first electrode lead sleeve and the second electrode lead sleeve, and the insulating sheath of each lead, quadruple insulation can be realized in the single-cavity tube, and complex multi-cavity tube designs in the prior art are avoided on the premise of realizing the same insulation effect. Furthermore, in this way the complicated prior art insertion of the first electrode lead and the second electrode lead into a small catheter compartment is also well avoided.
A bending control component is also arranged in the lumen of the defibrillation catheter. The bend control assembly extends from within the lumen of the head end tube through the lumen of the body tube and further to the handle. The torsion of the defibrillation catheter is controlled at the handle by a bend control assembly.
Specifically, the bending control assembly comprises a bending control wire, a PTEE tube and a spring tube. Wherein the bend controlling wire and the PTFE tube extend from the end of the head tube remote from the body tube through the lumen of the body tube and further to the handle, and the spring tube extends at the junction of the head tube and the body tube through the lumen of the body tube and further to the handle. In this way, the bend control assembly is controlled by the push button at the handle, which in turn controls the torsion of the entire defibrillation catheter, thereby placing the defibrillation catheter in place. For example, the first electrode set and the second electrode set are placed on the wall of the coronary vein and the inner wall of the right atrium, respectively.
In the prior art, the torsion of the catheter is controlled by the bending control assembly alone, the torque generated by pushing and pulling the push button on the handle can not be well transmitted to the bending control assembly, and the torque on the bending control assembly can not be well transmitted to the defibrillation catheter, so that the bending control is difficult.
Thus, in embodiments of the present application, a support tab is also provided within the lumen of the defibrillation catheter. A support tab extends from within the lumen of the head end tube of the defibrillation catheter to the bend-controlling distal end of the defibrillation catheter. In one embodiment, a bend-controlling section of the defibrillation catheter is located within the head tube, the bend-controlling section of the defibrillation catheter extending from an end of the head tube remote from the body tube to near a junction of the head tube and the body tube. The end of the bend-controlling curve is located at the position of the spring tube in the bend-controlling assembly. The distal end of the bend control shape is the end of the bend control shape section of the defibrillation catheter proximal to the body tube. The location of the bend-controlling bending section of the defibrillation catheter is well known to those skilled in the art. In addition, the supporting sheet is also wrapped with an insulating sleeve. The supporting sheet can play a good role in supporting, transmitting torque and insulating.
In one embodiment, the support sheet has a tensile strength of 550MPa to 2000MPa for better support and torque transfer during controlled bending of the defibrillation catheter.
In one implementation, one end of the support tab is located at an end of the head end tube remote from the body tube.
In one implementation, the support sheet is a stainless steel sheet.
In one implementation, the support sheet has a width of 0.8-1.5mm and a thickness of 0.06-0.15mm.
Support and torque transmission are carried out through setting up the backing plate, and when the head end pipe of controlling the defibrillation pipe through accuse curved subassembly rotates, can transmit the moment of torsion through the backing plate to increase the moment of torsion transmission effect.
To further enhance the torque transmission of the support sheet, in one embodiment, a reinforcing liner tube is also provided within the lumen of the defibrillation catheter. The reinforcing lining pipe is arranged at the joint of the head end pipe and the main body pipe, and the outer wall of the reinforcing lining pipe is fixedly arranged on the inner wall of the pipe cavity of the head end pipe and the main body pipe.
In one embodiment, the reinforcing liner tube and the support sheet have overlapping portions in a direction perpendicular to the axial direction of the defibrillation catheter.
The reinforcing lining pipe is added in the transition area of the main pipe and the head pipe, so that torque is transmitted among the main pipe, the head pipe, the reinforcing lining pipe and the supporting sheets. In this way, torque and bending can be well received, and torque transmission of the catheter is ensured.
In one implementation, the reinforcing liner tube may be secured to the inner wall of the lumen of the defibrillation catheter by mechanical means, by adhesive or welding, or the reinforcing liner tube may be secured by itself by a secure abutment with the inner walls of the main body tube and the head end tube. Of course, the reinforcing liner tube may be secured to the inner side wall of the lumen of the defibrillation catheter by other means, and the application is not limited.
In one implementation, the material of the reinforcing liner tube may be selected from: polytetrafluoroethylene PTFE, polyimide PI, polycarbonate PC, or polyetheretherketone PEEK.
In addition, the supporting sheet is also wrapped with an insulating sleeve.
In the head end tube, a plurality of electrodes are respectively contained in the first electrode group and the second electrode group, and the plurality of electrodes correspond to a plurality of electrode leads. In one embodiment, the first electrode lead sheath of the plurality of first electrode lead overwraps is initiated proximate the first electrode of the body tube; likewise, the second electrode lead sheath of the plurality of second electrode lead overwraps also originates proximate the second electrode of the body tube. In this way, the first electrode leads corresponding to the first electrodes other than the first electrode closest to the main body tube and the second electrode leads corresponding to the second electrodes other than the second electrode closest to the main body tube are not insulated by the first electrode lead sleeve and the second electrode lead sleeve. Therefore, in the embodiment of the application, the support sheet is externally wrapped with the insulating sleeve, so that a good insulating effect can be achieved in the head end pipe, particularly in the part corresponding to the front electrodes of the first electrode group and the second electrode group.
Furthermore, the opposite side walls of the insulating sleeve of the support sheet may rest against the reinforcing liner to further enhance the torque transmission effect.
In one implementation, the material of the insulating sleeve is selected from: polytetrafluoroethylene PTFE, polyimide PI, polycarbonate PC, or polyetheretherketone PEEK.
In one embodiment, the support tab is disposed between the first and second electrode lead casings and the bend control assembly to separate the first and second electrode leads from the bend control assembly to further enhance insulation.
As described above, in the embodiment of the application, the single-cavity tube design is adopted first, and the insulation between the internal pipelines is realized by adopting a plurality of groups of insulating sleeves in the single-cavity tube, so that the structure complexity is simplified, the raw material cost is saved, the manufacturing difficulty is reduced, and the operation reliability is improved. Secondly, through the combination of the supporting sheet and the reinforced lining tube, the functions of supporting and torque transmission can be better played, and the insulation effect is further enhanced.
The embodiment of the application also provides a defibrillation system. The defibrillation system includes: a defibrillation catheter as described above, and a defibrillation power supply connected to the first electrode group and the second electrode group by the first electrode lead and the second electrode lead. A defibrillation power supply is used to apply a voltage to the first electrode group and the second electrode group during defibrillation.
The foregoing is merely illustrative of the embodiments of this application and any equivalent and equivalent changes and modifications can be made by those skilled in the art without departing from the spirit and principles of this application.
Claims (10)
1. A defibrillation catheter, comprising a head end tube, a body tube, and a handle; one end of the main body pipe is connected with the head end pipe, and the other end of the main body pipe is connected with the handle; the head end pipe is provided with a first electrode group and a second electrode group; the first electrode group and the second electrode group are applied with a voltage at the time of defibrillation;
the defibrillation catheter is a single-lumen tube, and the inside of the lumen of the defibrillation catheter is provided with:
A plurality of first electrode leads respectively connected with a plurality of electrodes in the first electrode group and a plurality of second electrode leads respectively connected with a plurality of electrodes in the second electrode group, the plurality of first electrode leads and the plurality of second electrode leads extending from the lumen of the head end tube through the lumen of the body tube and further to the handle, the plurality of first electrode leads being externally wrapped with a first electrode lead sleeve and the plurality of second electrode leads being externally wrapped with a second electrode lead sleeve;
a bend control assembly extending from within the lumen of the head end tube through the lumen of the body tube and further to the handle where the defibrillation catheter torsion is controlled by the bend control assembly; and
And the supporting sheet extends from the inner cavity of the tube cavity of the head end tube to the tail end of the control bending shape of the defibrillation catheter, and the supporting sheet is wrapped with an insulating sleeve.
2. The defibrillation catheter of claim 1, wherein a reinforcing liner tube is further disposed within the lumen of the defibrillation catheter, the reinforcing liner tube is disposed at the junction of the head end tube and the body tube, and an outer wall of the reinforcing liner tube is fixedly disposed on the inner wall of the lumen of the head end tube and the body tube.
3. The defibrillation catheter of claim 1, wherein the support tab is disposed between the first and second electrode lead bushings and the bend control assembly to separate the first and second electrode leads from the bend control assembly.
4. The defibrillation catheter of claim 2, wherein opposite side walls of the insulating sleeve abut against the reinforcing liner tube.
5. The defibrillation catheter of claim 1, wherein the support tab has a width of 0.8-1.5mm and a thickness of 0.06-0.15mm.
6. The defibrillation catheter of claim 1, wherein the material of the first electrode lead sheath, the second electrode lead sheath, or the insulating sheath is selected from the group consisting of: polytetrafluoroethylene PTFE, polyimide PI, polycarbonate PC, or polyetheretherketone PEEK.
7. The defibrillation catheter of claim 2, wherein the outer wall of the reinforcing liner tube is mechanically secured, bonded or welded to the inner wall of the lumen of the head tube and the body tube.
8. The defibrillation catheter of claim 7, wherein the reinforcing liner tube is of a material selected from the group consisting of: polytetrafluoroethylene PTFE, polyimide PI, polycarbonate PC, or polyetheretherketone PEEK.
9. The defibrillation catheter of claim 1, wherein the head tube and the body tube are integrally formed and the head tube and the body tube are the same diameter.
10. A defibrillation system comprising: the defibrillation catheter of claim 1, and a defibrillation power supply connected to the first and second electrode groups by the first and second electrode leads, the defibrillation power supply for applying voltages to the first and second electrode groups upon defibrillation.
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| CN202410177073.1A CN117958957A (en) | 2024-02-08 | 2024-02-08 | Defibrillation catheter and defibrillation system |
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| CN202410177073.1A CN117958957A (en) | 2024-02-08 | 2024-02-08 | Defibrillation catheter and defibrillation system |
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| CN102258823A (en) * | 2010-04-21 | 2011-11-30 | 日本来富恩株式会社 | Catheter |
| WO2013166391A1 (en) * | 2012-05-03 | 2013-11-07 | Biosense Webster (Israel), Ltd. | Catheter adapted for direct tissue contact and pressure sensing |
| CN104582613A (en) * | 2012-05-03 | 2015-04-29 | 韦伯斯特生物官能(以色列)有限公司 | Catheter adapted for direct tissue contact and pressure sensing |
| CN103800069A (en) * | 2012-11-14 | 2014-05-21 | 韦伯斯特生物官能(以色列)有限公司 | Catheter with improved torque transmission |
| CN203763234U (en) * | 2013-12-26 | 2014-08-13 | 上海微创电生理医疗科技有限公司 | Medical catheter |
| CN114903491A (en) * | 2021-02-09 | 2022-08-16 | 上海微创电生理医疗科技股份有限公司 | Medical catheter |
| CN217219188U (en) * | 2022-03-16 | 2022-08-19 | 无锡帕母医疗技术有限公司 | Radiofrequency ablation catheter and radiofrequency ablation equipment |
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