WO2016180327A1 - 具有贴壁调节丝的波纹型射频消融导管及其设备 - Google Patents
具有贴壁调节丝的波纹型射频消融导管及其设备 Download PDFInfo
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- WO2016180327A1 WO2016180327A1 PCT/CN2016/081621 CN2016081621W WO2016180327A1 WO 2016180327 A1 WO2016180327 A1 WO 2016180327A1 CN 2016081621 W CN2016081621 W CN 2016081621W WO 2016180327 A1 WO2016180327 A1 WO 2016180327A1
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- corrugated
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- ablation catheter
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00292—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
- A61B2017/003—Steerable
- A61B2017/00318—Steering mechanisms
- A61B2017/00323—Cables or rods
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00292—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
- A61B2017/003—Steerable
- A61B2017/00318—Steering mechanisms
- A61B2017/00331—Steering mechanisms with preformed bends
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00214—Expandable means emitting energy, e.g. by elements carried thereon
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00345—Vascular system
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B2018/00434—Neural system
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- A—HUMAN NECESSITIES
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- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00577—Ablation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00791—Temperature
- A61B2018/00821—Temperature measured by a thermocouple
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- A61B2018/0091—Handpieces of the surgical instrument or device
- A61B2018/00916—Handpieces of the surgical instrument or device with means for switching or controlling the main function of the instrument or device
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- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1405—Electrodes having a specific shape
- A61B2018/1435—Spiral
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- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1465—Deformable electrodes
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- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1467—Probes or electrodes therefor using more than two electrodes on a single probe
Definitions
- the invention relates to a corrugated radio frequency ablation catheter with an adherent adjustment wire, and relates to a radio frequency ablation device including the radio frequency ablation catheter described above, and belongs to the technical field of interventional medical devices.
- radiofrequency ablation catheters are key components for intervention in human blood vessels and RF energy release.
- the RF electrode is mounted on a bracket at the front end of the RF ablation catheter.
- the bracket is used to carry the RF electrode and expands and abuts before the RF starts. Since the radiofrequency ablation procedure is performed directly in the blood vessels of the human body, the telescopic size of the stent is adapted to the diameter of the human blood vessel.
- the diameter of the blood vessels in the human body varies depending on the ablation site.
- the diameter of human blood vessels varies from person to person.
- the diameter of renal arteries of different human bodies is about 2 to 12 mm, which is quite different.
- the telescopic size of the electrode end of the radiofrequency ablation catheter is generally fixed, and cannot meet the diameter size requirements of different human blood vessels, and the coverage of human blood vessels of different diameters is narrow. Therefore, when performing radiofrequency ablation procedures on different patients, it is usually necessary to replace the radiofrequency ablation catheters of different specifications and models for ablation. Even so, in some cases, there is a problem that the RF electrode cannot be attached at the same time during surgery, which affects the surgical effect.
- the structure of the radiofrequency ablation catheter is divided into various types according to the shape of the electrode and the electrode holder, for example, a balloon type, a puncture needle type, a spiral type, and a petal structure.
- Various radiofrequency ablation catheters have limitations on the adaptability of blood vessels of different diameters.
- the primary technical problem to be solved by the present invention is to provide a corrugated radio frequency ablation catheter having an adherent adjustment wire.
- Another technical problem to be solved by the present invention is to provide a radio frequency ablation device including the above radio frequency ablation catheter.
- Corrugated radio frequency ablation catheter with an adherent adjustment wire with a long strip connection a catheter an electrode holder is disposed at a front end of the connecting catheter, and a control handle is disposed at a rear end of the connecting catheter;
- the electrode holder is a corrugated electrode holder composed of one or more corrugations, and one or more electrodes are distributed on the corrugations;
- a rear section of the adhering wire is slidably disposed in one of the lumens of the connecting conduit, and a rear end thereof is connected to a control member disposed on the control handle, or a rear end thereof is connected to the outside Provided on the control member; after the front portion of the adhering wire passes out of the outer portion of the electrode holder, passes through one or more holes provided on the corrugation or bypasses a plurality of corrugations, and then the front end thereof returns to the electrode holder The interior is fixed.
- the tube holder and the lumen inside the connecting tube are returned to the rear end of the connecting tube, and are fixed on the control handle or It is fixed on the control member.
- the front end of the adhering wire is fixed to the front end of the electrode holder after returning to the inside of the electrode holder.
- the front end of the adhering wire passes through the front end of the electrode holder, and is fixed to the front end of the electrode holder or is restricted to the outside of the front end of the electrode holder.
- a support wire disposed in a certain lumen of the connecting catheter and the electrode holder, and the front end of the adhering adjustment wire is fixed on the support wire; or
- the anchoring wire is a filament that is outwardly separated from the support wire.
- the portion of the support wire inside the electrode holder is shaped into a corrugated shape to form a corrugated shaped section.
- a shaping wire disposed in a certain lumen of the electrode holder, and the front end of the adhering adjustment wire is fixed on the shaping wire; or the adhering adjustment wire It is a filament that is separated from the shaping wire.
- the adhering regulating wire is composed of two or more wires, wherein the plurality of wires are respectively used for adjusting one or a section of corrugations on the electrode holder, wherein one of the corrugations includes two And more than two corrugations, each of which has its front end fixed at one end of the corresponding corrugation/corrugation section, the other end bypassing the corresponding corrugation/corrugation section, and via the inside of the electrode holder and the lumen inside the connecting duct, and then It is fixed on a control member of a corresponding control member or peripheral device provided on the control handle.
- the adhering wire is eccentrically disposed on the electrode holder.
- the electrode is disposed at a peak/valley position of the corrugated section.
- a radiofrequency ablation device comprising the radiofrequency ablation catheter described above, and a radio frequency ablation host coupled to the radiofrequency ablation catheter.
- the corrugated radio frequency ablation catheter with the adherent regulating wire provided by the invention has novel structure and good adaptability to target lumens of different diameters.
- the electrode attached to the corrugation can be well adhered by pulling the adherent adjustment wire.
- the plurality of electrodes located on the corrugation can be approximated circumferentially around the target lumen when adhering.
- the above-mentioned adherent adjusting wire can also adopt a structure of multiple wires, and by separately controlling the monofilament, the separate control of different corrugated sections of the radiofrequency ablation catheter can be realized, and the diameter adjustment difficulty of the corrugated radio frequency ablation catheter can be simplified.
- FIGS. 1A and 1B are respectively a perspective structural view and a side view of a corrugated radio frequency ablation catheter in a first embodiment
- Figure 2 is a cross-sectional view of the electrode holder of the corrugated radio frequency ablation catheter of Figure 1A;
- Figure 3 is a cross-sectional view of the E-E of the electrode holder shown in Figure 2;
- Figure 3A is an enlarged schematic view of a portion F of Figure 3;
- Figure 4 is a schematic view showing another arrangement of the adhering wire in the first embodiment
- FIG 5 is a schematic view showing the structure of a control handle corresponding to the corrugated radio frequency ablation catheter shown in Figure 1A in the first embodiment;
- 6A is a schematic view showing a state of use of a corrugated radio frequency ablation catheter in a target lumen of a thinner diameter in the first embodiment
- Figure 6B is a side elevational view corresponding to Figure 6A;
- FIG. 7A is a schematic view showing a state of use of a corrugated radio frequency ablation catheter in a target lumen of a relatively large diameter in the first embodiment
- Figure 7B is a side elevational view corresponding to Figure 7A;
- 8A and 8B are respectively a front view and a side view of a corrugated radio frequency ablation catheter in a second embodiment
- FIGS. 9A and 9B are respectively a perspective view of a corrugated radio frequency ablation catheter in a third embodiment. Schematic diagram and side view;
- 10A and 10B are respectively a perspective structural view and a side view of a corrugated radio frequency ablation catheter in a fourth embodiment
- Figure 11 is a perspective view showing a three-dimensional structure of a corrugated radio frequency ablation catheter
- Figure 12 is a structural example 1 of the anchoring wire in the corrugated radio frequency ablation catheter of Figure 11;
- Figure 13 is a second embodiment of the structure of the anchoring wire in the corrugated radio frequency ablation catheter of Figure 11;
- Figure 14 is a structural example 3 of the anchoring wire in the corrugated radio frequency ablation catheter of Figure 11;
- 15A is a first schematic diagram of the use state of the control handle corresponding to the corrugated radio frequency ablation catheter in the fifth embodiment
- 15B is a second schematic view showing the state of use of the control handle corresponding to the corrugated radio frequency ablation catheter in the fifth embodiment
- Figure 16 is a perspective view showing the three-dimensional structure of the corrugated radio frequency ablation catheter
- Figure 17 is a perspective view showing the structure of a second type of corrugated radio frequency ablation catheter in the sixth embodiment
- Figure 18 is a perspective view showing the three-dimensional structure of the corrugated radio frequency ablation catheter
- Figure 19 is a structural example 1 of the anchoring wire in the corrugated radio frequency ablation catheter of Figure 18;
- Figure 20 is a second example of the structure of the anchoring wire in the corrugated radio frequency ablation catheter of Figure 18;
- Figure 21 is a structural example 3 of the anchoring wire in the corrugated radio frequency ablation catheter of Figure 18;
- Figure 22 is a perspective view showing the three-dimensional structure of the corrugated radio frequency ablation catheter
- Figure 23 is a schematic view showing the structure of the adhering regulating wire in the corrugated radio frequency ablation catheter shown in Figure 22;
- Figure 24 is a perspective view showing the structure of a corrugated radio frequency ablation catheter in the ninth embodiment.
- the corrugated radio frequency ablation catheter provided by the present invention comprises an elongated connecting catheter, and a corrugated electrode holder is arranged at the front end of the connecting catheter (see FIG. 1A) at the rear end of the connecting duct.
- a control handle 20 is provided (see Fig. 5).
- the electrode holder can be integrally formed with the connecting tube, and the electrode holder is a portion that is shaped into a corrugated shape at the front end of the connecting tube; the electrode holder can also be independently fabricated and then integrated with the connecting tube.
- the corrugated electrode holder includes an outer tube 1 and one or more electrodes 2 disposed on the outer tube 1.
- the outer tube 1 is shaped into a corrugated shape composed of one or more corrugations, and the shape of the corrugation may be a polygonal line composed of a plurality of straight lines, such as a triangular wave; the shape of the corrugation may also be composed of a plurality of segments, such as a sine wave or a circular wave.
- the shape of the corrugation can also be composed of curves and straight lines, such as trapezoidal waves with curved corners. Further, the shape of the corrugations may be other shapes having an undulating structure.
- the shape and size of the plurality of corrugations may be the same or different.
- part of the corrugations are located in different planes, and part of the corrugations are located in the same plane.
- each of the two corrugations is located in one plane such that the plurality of corrugations exhibit a divergence as shown in FIG. 1B in their side projections.
- the plurality of electrodes 2 may be respectively distributed on the respective corrugations, wherein the arrangement of the electrodes 2 at the peaks or troughs of the corrugations is preferred.
- the electrode 2 may be a block electrode or a ring electrode embedded on the outer circumference of the outer tube 1, and the outer surface of the electrode 2 may be flush with the outer surface of the outer tube 1 or slightly higher than the outer surface of the outer tube 1, the electrode 2 The outer surface may also be lower than the outer surface of the outer tube 1.
- the respective corrugations in the corrugated electrode holder are distributed across each other on their side projections, and the plurality of electrodes 2 are respectively disposed at respective peak positions.
- the plurality of electrodes 2 can be evenly distributed in the circumferential direction on the side projection of the electrode holder, that is, approximately circumferentially distributed on the outer circumference of the target lumen.
- the plurality of electrodes 2 may also be unevenly distributed in the circumferential direction on the side projection of the electrode holder.
- a plurality of corrugations in the longitudinal direction of the electrode holder can also be repeated in a regular or random manner, so that the plurality of electrodes 2 can have overlap on the side projection of the electrode holder.
- the outer tube of the electrode holder can be seen.
- 1 can be a single lumen tube or a multi-lumen tube, and the outer tube 1 can be made of a polymer material or a metal material, such as stainless steel or a memory alloy.
- the outer tube 1 can be processed by straight pipe or bar, or can be made into a corrugated special shape tube using the A section.
- FIG. 2 when the outer tube 1 uses a multi-lumen tube, a plurality of lumens are disposed outside the central tube outside the outer tube 1 of the electrode holder, and a plurality of tubes are respectively disposed in a part of the tubes.
- each set of the RF wire 3 and the tip end of the thermocouple wire 4 are disposed inside the single electrode 2, wherein the head end of the RF wire 3 is tightly fixed to the electrode 2, such as using soldering, conductive adhesive
- the connection process is realized by the connection process; the head ends of the two thermocouple wires 4 are welded and covered by the thermocouple wire end insulating layer 5, and then insulated from the RF line 3 and the electrode 2.
- a shaping wire 8 is also disposed in one of the lumens of the outer tube 1, and the shaping wire 8 is fixed in the deformed region of the electrode holder for supporting the corrugated shape of the electrode holder.
- the electrode holder can also be directly shaped into a corrugated shape, thereby eliminating the shaping wire 8.
- the outer tube is made of a memory alloy or a polymer material, the outer tube can be directly shaped, thereby eliminating the need to set the shaping wire 8.
- a support wire 7 is disposed in the central lumen of the connecting catheter and the electrode holder, and the support wire 7 can be movably disposed in the central lumen, or can be fixedly disposed in the central lumen, or supported The wire 7 can also be movably or fixedly disposed in other lumens connecting the catheter and the electrode holder.
- the head end of the support wire 7 may be provided with a developing head 75 for immediate imaging of the inside of the target lumen.
- a soft guide wire 9 may be disposed at the front end of the support wire 7.
- the soft guide wire 9 may be a straight soft guide wire or a soft guide wire as shown in the figure, so that the radio frequency ablation catheter can be omitted. Guide the catheter/sheath directly into the blood vessel, simplifying the operation.
- the inside of the outer tube 1 and the connecting duct is further provided with a lumen for accommodating the adhering regulating wire 6, and the rear section of the adhering regulating wire 6 is slidably disposed in one of the connecting ducts.
- the rear end 60 is connected to a control member 22 provided on the control handle 20 (see Fig. 5).
- the adherent adjustment wire 6 can slide back and forth in the lumen of the connecting catheter.
- the lumen for receiving the adherent adjustment wire 6 may be a central lumen or one of a plurality of eccentric lumens distributed around the central lumen. As shown in Fig.
- the front section of the adhering wire 6 passes through the hole 12 near the rear end of the electrode holder, passes through a plurality of holes provided in different corrugations, and finally its front end returns to the electrode from the hole 11 near the front end of the electrode holder.
- the inside of the bracket is fixed.
- the wall-adjusting wire 6 can slide in a hole provided in a different corrugation.
- the fixing position of the front end of the adhering wire 6 may be different, may be fixed at the front end of the electrode holder, may be fixed at the front end of the supporting wire 7, may be fixed on the shaping wire 8, or may pass through the electrode holder 2 and the corresponding lumen inside the connecting conduit is fixed to the control member 22 or to the housing of the control handle 20 together with the rear end 60 of the adhering wire 6.
- the front end of the adhering wire 6 is returned from the hole 11 near the front end of the electrode holder to the inside of the electrode holder 2, passes through the electrode holder and the lumen inside the connecting catheter, and the sticker
- the rear end of the wall regulating wire 6 is returned together to the rear end of the connecting duct and is fixed to the housing or control member 22 of the control handle 20. That is, the front end and the rear end of the adhering wire 6 may be fixed to the same control member 22 as shown in FIG. 5, or alternatively, the front end and the rear end of the wire adjusting wire 6 may be fixed to one end thereof.
- the other end of the housing of the control handle 20 is fixed to the control member 22.
- the front end of the adhering wire 6 can also be simply fixed to the front end of the electrode holder, or fixed to the front end of the support wire 7 or a portion of the support wire 7 located inside the electrode holder, or fixed to the shaping wire 8.
- a portion, or the front end of the adhering wire 6 is fixed in the lumen of the electrode holder, as long as the front end thereof is fixed, so that when the anchoring wire 6 is pulled backward, the adjusting wire 6 is attached Under the action, the electrode holder will undergo shrinkage deformation, the corrugation diameter will increase, and the axial spacing of the plurality of corrugations will shrink.
- the adhering wire 6 and the supporting wire 7/shaped wire 8 can be made of the same material, which can be understood as the anchoring wire.
- 6 is a filament in which the support wire 7/shaped wire 8 is separated backward.
- the front end of the adhering wire 6 is fixed to the front end of the shaping wire 8.
- the setting wire 8 and the adhering wire 6 can be made of the same type of filament
- the wall regulating wire 6 and the shaping wire 8 are respectively two filament branches which are separated backward from the front end thereof, wherein the branch corresponding to the shaping wire 8 is fixed in a certain lumen of the electrode holder, corresponding to the anchoring wire 6
- the posterior segment of the branch can slide in the lumen of the electrode holder and/or catheter body.
- the adhering wire 6 and the setting wire 8 are made of different materials (for example, the fixing wire 8 uses a pipe, and the anchoring wire 6 uses a filament), the front end/front section of the adhering wire 6 and the shaping wire 8 can be welded. , riveting, bonding, etc. assembled together.
- control member 23 is provided, and the end 70 of the support wire 7 also enters the control handle 20 after passing through the connection conduit, and is passed through the control handle 20 and then fixed to the control member 23 of the peripheral device.
- the control member 22 connected to the wall adjusting wire 6 can also be disposed outside the control handle 20 in a peripheral manner, and the front end and/or the rear end of the wall adjusting wire 6 pass through the control handle 20 and be connected to the peripheral device.
- the control member 23 can also be disposed on the control handle 20, and the support wire 7 is directly connected thereto after penetrating the control handle 20.
- FIG. 6A-7B are schematic views showing the state of use of a corrugated radio frequency ablation catheter in a target lumen of different diameters.
- the corrugated electrode holder shown in Fig. 1A is assumed to have an initial diameter of ⁇ B, and the length of the corrugation section is A.
- the adhering adjusting wire 6 By loosening the adhering adjusting wire 6, the adhering regulating wire 6 is relaxed, and at this time, the length of the corrugated section of the catheter front end can be extended by the sheath tube, and is close to a straight line, and can enter the target lumen. As shown in FIG.
- the corrugation of the electrode holder automatically expands to approach the target lumen.
- Diameter ⁇ C see Fig. 6B
- the plurality of electrodes 2 are in contact with the tube wall under the natural expansion of the electrode holder.
- the length of the corrugated section of the electrode holder is extended to (A-1), and is adjusted by tensioning and adhering.
- the wire 6 can improve the adherence state of the electrode 2. As shown in FIG.
- the length of the corrugated section of the electrode holder is shortened to (A-2), and the axial distance between the plurality of electrodes distributed on the electrode holder is reduced.
- the electrode holder is loosened by loosening the adherent adjustment wire 6, and then the sheath is moved forward or the catheter is moved backward to allow the electrode holder to enter the sheath tube, so that the radiofrequency ablation catheter can be rotated or moved in the target lumen, or The radiofrequency ablation catheter is removed from the target lumen.
- the corrugated electrode holder is composed of a plurality of triangular waves, and the plurality of corrugations are located in the same plane.
- the plurality of electrodes are respectively located at the peaks and troughs of the single triangular wave, and since the side projections of the plurality of triangular waves overlap, The side projections of the electrodes also have an overlap.
- the corrugated electrode holder is composed of a plurality of circular arc waves, but the plurality of corrugations are all located in different planes.
- the plurality of electrodes are respectively located at the peak (or trough) position of a single circular arc such that the side projections of the plurality of electrodes can be distributed in the circumferential direction of the target lumen.
- the catheter can be directly moved to ablate other parts of the target lumen, eliminating the need to rotate the catheter at the same location in the target lumen.
- the front section of the adhering wire 6 passes through the hole near the rear end of the electrode holder, passes through the holes provided on the different corrugations, and finally the front end thereof is from the hole near the front end of the electrode holder. Return to the inside of the electrode holder and fix it.
- the side projections of the plurality of electrodes are distributed in the circumferential direction of the target lumen, and the radiofrequency ablation procedure is performed in the third embodiment with respect to the second embodiment.
- the electrode holder has a lower requirement in the direction of the target lumen, so the operation is simple.
- the structure of the second embodiment is less difficult to enter the target lumen than the structure of the third embodiment.
- the plurality of corrugations of the corrugated electrode holder are all located in different planes, and the plurality of corrugations are distributed in an approximately spiral shape, and the plurality of electrodes are respectively located in a single corrugated shape.
- the crest (or trough) position also allows multiple electrodes to be distributed in the circumferential direction of the target lumen.
- the plurality of corrugations may exhibit a spiral distribution of one or more turns, and the adherent adjustment wires 6 may also pass through holes provided in different corrugations.
- the corrugated electrode holder is composed of a plurality of sine waves.
- the plurality of corrugations in the fifth embodiment are located in the same plane, and the plurality of electrodes are respectively located at the crest and trough positions of the respective sine waves.
- the front section of the adhering regulating wire 6 does not pass through a plurality of corrugations, but the front end thereof is fixed after winding a plurality of corrugations.
- the shape of the plurality of corrugations in the corrugated electrode holder may be a triangular wave composed of a plurality of straight lines (see FIG. 8A) or a circular wave composed of a plurality of circular arcs (see FIG. 10A).
- a sine wave (see Fig. 11) is either a trapezoidal wave composed of a straight line and a curved line or any other corrugation not shown. Multiple ripples can be in the same
- the distribution in an in-plane can also be distributed in different planes. Even a plurality of corrugations can be surrounded by an approximately spiral shape, so that the electrodes are distributed in the circumferential direction.
- the plurality of corrugations are distributed in the same plane.
- the corrugated electrode holder can be attached in any direction in the target lumen during the actual ablation procedure.
- the plurality of corrugations constituting the corrugations have the same shape on the same electrode holder.
- the shape and size of the plurality of corrugations constituting the corrugated shape may be different, and the shape, the pitch, the peak position, the trough position, and the like of the respective corrugations may be different.
- the state of the local electrode can be adjusted by adjusting the corrugation size of the local area, and the shape of the other areas can be adjusted.
- the method of adjusting the wall of the corrugated electrode holder composed of different corrugations can be achieved by pulling a plurality of wires which are composed of a plurality of wires to pull the different wire in the wire adjusting wire 6.
- the structure and the adjustment method of the adhering adjustment wire 6 composed of a plurality of wires are introduced.
- the arrangement manner of the adhering regulating wire 6 can also be various, and the front section of the adhering regulating wire 6 can be set as shown in the first embodiment, the second embodiment and the third embodiment.
- the holes in the corrugated outer tubes can also be passed through the respective corrugations and then into the interior of the electrode holder and fixed as shown in the fifth embodiment without passing through the outer tubes of the respective corrugations.
- the structure of the electrode adjusting wire 6 passing through the holes provided on the different corrugated outer tubes is more controllable to the shape change of the electrode holder. The effect of the wall is better.
- the fifth embodiment is taken as an example to attach the wall to the radiofrequency ablation catheter in conjunction with FIGS. 11 to 15B.
- the specific structure of the adjusting wire 6 and the structure of the corresponding control handle 20 will be described in detail.
- the radiofrequency ablation catheter has an inner fitting wire 6 which is similar to the structure in the first embodiment, and the adherent adjusting wire 6 is a monofilament independent of the supporting wire 7 and the shaping wire 8;
- the adjusting wire 6 can also have the function of supporting the wire at the same time, or the front end of the adhering regulating wire 6 can also be fixed to the supporting wire 7 so that the adhering regulating wire 6 serves as a branch of the supporting wire 7.
- Both the support wire 7 and the adhering wire 6 can be made of a filament or a thin tube.
- the adhering wire 6 when the adhering wire 6 has the function of supporting the wire at the same time,
- the rear section of the adhering wire 6 is slidably disposed in a certain lumen of the connecting duct, and the rear end thereof is connected to the control handle 20;
- the front section of the fitting adjusting wire 6 bypasses a plurality of corrugations or is disposed on different corrugations
- the front end thereof returns from the hole 11 near the front end of the electrode holder to the inside of the electrode holder, passes through the front end of the electrode holder and is fixed to the front end of the electrode holder or is restricted to the outside of the front end of the electrode holder.
- a developing head and/or a flexible guide wire 9 may be disposed at the front end of the adhering regulating wire 6.
- the structure of the flexible guide wire 9 may be a straight soft guide wire as shown in Fig. 12 or a soft guide wire as shown in Fig. 13.
- the elbow soft guide wire may be composed of a plurality of arcs, straight lines or curves, and may have one or more elbows.
- the adhering wire 6 is the branch 76 of the support wire 7 rearward.
- one or two lumens are present inside the connecting catheter and the electrode holder for accommodating the two branches of the support wire 7.
- the portion of the front portion of the support wire 7 corresponding to the electrode holder may be shaped into a corrugation shaping section 78 by pre-sizing, and the support wire 7 corresponds to the corrugation shaping section 78.
- the branch is fixed inside the lumen, and the rear end thereof can be directly fixed in the connecting duct or can be fixed inside the control handle, thereby ensuring that the electrode bracket can maintain a corrugated shape when it is not subjected to an external force; and the supporting wire 7 corresponds to the anchoring adjusting wire.
- the branch 76 can be slidably disposed inside the lumen, and its distal end can be fixed to a control member provided on the control handle 20 or can be fixed to the control member of the peripheral device.
- the support wire 7 does not have the function of the shaping wire 8
- the support wire 7 and the anchoring wire 6 can be slid together or disposed in two lumens, and the rear ends of the two are connected through the connecting conduit. They are then respectively fixed on corresponding control members of the corresponding control members or peripherals provided on the control handle 20.
- the control handle 20 may be provided with only one control member 22 connected to the adhering wire 6. At this time, The structure of the control handle 20 can be seen in Figures 15A and 15B. By pushing the control member 22 back from the position shown in Fig. 15A to the position shown in Fig. 15B, the adhering wire 6 can be pulled back to increase the diameter of the electrode holder.
- 16 and 17 are schematic views showing two structures of a radio frequency ablation catheter in the sixth embodiment.
- the adhering wire 6 is disposed near the center of the electrode holder. In the sixth embodiment, it is different from the above five embodiments. In this embodiment, the adhering wire 6 is eccentrically disposed on the corrugated electrode holder, and the setting position may be the highest point of the electrode holder. It can be any position between the center position and the vertex position of the electrode holder.
- the adhering wire 6 is eccentrically disposed on the corrugated electrode holder, and the front portion of the adhering wire 6 passes through the hole near the rear end of the electrode holder, passes through the hole provided in the corrugation. Then, it is fixed after entering the front end of the electrode holder from the hole near the front end of the electrode holder.
- the adhering wire 6 is eccentrically disposed on the corrugated electrode holder, and the front portion of the adhering wire 6 passes through the hole near the rear end of the electrode holder, bypasses a plurality of corrugations, and then The hole near the front end of the electrode holder is fixed after entering the front end of the electrode holder.
- the electrode holder can be adapted to have a diameter larger than the corrugated section of the electrode holder. Blood vessels of diameter. Since the diameter of the human blood vessel is fixed, the initial diameter of the corrugated shape of the electrode holder in the radiofrequency ablation catheter can be greatly reduced, facilitating the radiofrequency ablation catheter to enter and move inside the blood vessel.
- the electrode holder has two corrugations, and the adhering regulating wire 6 is eccentrically disposed, wherein the adhering regulating wire 6 may be one wire or two wires.
- the adhering regulating wire 6 is a wire whose rear portion is returned to the control handle through the lumen connecting the inside of the catheter, and the rear end thereof is fixed to the control provided on the control handle.
- the middle portion passes through the hole 12 near the rear end of the electrode holder, two points are respectively fixed in the hole 13 and the hole 14 at the peaks disposed at the intermediate positions of the two corrugations;
- the front end enters the inside of the electrode holder from the hole 11 near the front end of the electrode holder, and returns to the rear end of the connecting tube through the tube bracket and the lumen inside the connecting tube, and is fixed on the same control member together with the rear end or fixed to the back end respectively.
- the front and rear sections of the adhering regulating wire 6 pass through the lumen inside the connecting duct, and the front end and the rear end thereof are respectively fixed on the respective control members (referred to as corresponding control members), two Each of the corresponding control members may be disposed on the control handle 20, or disposed outside the control handle 20, or two corresponding control members may be disposed at one
- the control handle 20 is on the other and the other is disposed outside the control handle 20.
- the degree of contraction of the two corrugations can be separately adjusted by controlling the front and rear sections of the adhering wire 6 by two corresponding control members.
- the front end and the rear end of the adhering wire 6 can also be fixed together on the same control member.
- the adhering regulating wire 6 may also be composed of two wires 6A and 6B for adjusting two corrugations, respectively, and the front ends of each of the wires are respectively fixed at Corresponding to one end of the corrugation, the other end bypasses the corrugation, returns from the other end of the corrugated back to the inside of the electrode holder, and returns to the control handle via the inside of the electrode holder and the lumen inside the connecting duct, and is then fixed on the control handle or On the corresponding control of the peripheral.
- the front end of the filament 6A is fixed in a hole 13 provided between the two corrugations, and the rear end is returned to the inside of the electrode holder via the hole 11 near the front end of the electrode holder, and via the inside of the electrode holder and the inside of the connecting duct
- the lumen is returned to the control handle and then fixed to the corresponding control member
- the front end of the filament 6B is fixed in another hole 14 disposed between the two corrugations, and the rear end is returned through the hole 12 near the rear end of the electrode holder.
- the inside of the electrode holder is returned to the control handle via the inside of the electrode holder and the lumen inside the connection catheter, and then fixed to the corresponding control member.
- the arrangement of the filament 6B is the same as that in Fig. 20, the front end of the filament 6A is fixed in the hole 11 near the front end of the electrode holder, and the rear end is returned via the hole 13 provided between the two corrugations.
- the inside of the electrode holder is connected to the corresponding control member via the inside of the electrode holder and the lumen connecting the inside of the catheter.
- Two corresponding control members respectively fixed to the filaments 6A and 6B may be provided on the control handle 20 or on the outside of the control handle 20.
- the adhering regulating wires 6A and 6B are used to control the degree of contraction of the two corrugations, respectively.
- the degree of contraction of the two corrugations can be separately adjusted by controlling the adhering regulating wires 6A and 6B by two corresponding control members.
- the corresponding control members of the filament 6A and the filament 6B may also be the same control member.
- the adhering regulating wires 6 are two wires 6A' and 6B' for adjusting one corrugation and one corrugation (i.e., one corrugated section), respectively.
- the front ends are respectively fixed at one end of the corresponding corrugation/corrugation section, the other end is bypassed by the corresponding corrugation/corrugation section, and the other end of the corrugation/corrugation section is returned to the inside of the electrode holder, and is returned through the inside of the electrode holder and the lumen inside the connection duct.
- the control handle it is fixed on the corresponding control.
- the leading ends of the filaments 6A' and 6B' are fixed near the electrode branch.
- the rear ends 60 of the two filaments are respectively returned to the inside of the electrode holder via the hole 13 provided between the two corrugations and the hole 12 near the rear end of the electrode holder, and finally fixed on the corresponding control member.
- the filament 6A' is used to control the degree of contraction of a single corrugation near the front end of the electrode holder
- the filament 6B' is used to control the entire corrugation section.
- the entire corrugation section comprises two corrugations, ie
- the filament 6B' is used to control the degree of contraction of the two corrugations.
- the corrugated section corresponding to the adjustment of the filament 6B' includes a single corrugation corresponding to the adjustment of the filament 6A'.
- the corresponding control members respectively connected to the rear ends of the two wires may also be the same control member.
- the adhering wire 6 may be composed of two or more wires, and the plurality of wires are respectively used for adjustment.
- the other end of the corrugation/corrugation section is returned to the inside of the electrode holder, and is fixed to the corresponding control member via the inside of the electrode holder and the lumen inside the connection duct.
- a front end thereof is fixed to one end of the corrugation, and a rear end penetrates into the inside of the electrode holder from a hole provided at the other end of the corrugation; when a wire is used to adjust a certain corrugation, The front end is fixed to one end of the corrugation, and the rear end penetrates into the inside of the electrode holder from a hole provided at the other end of the corrugation.
- the anchoring wire has two wires, and the two wires are respectively used to adjust the structure of the two corrugations on the electrode holder; and as shown in Figs. 22 and 23
- the structure of the eighth embodiment is that the adhering wire 6 has two wires, and the two wires are respectively used to control a structure of a corrugation and a corrugation on the electrode holder.
- the corresponding corrugated segments of the electrode holder may be segmentally expanded as needed, that is, only the corrugated segments requiring radio frequency are changed.
- the diameter of the electrode holder increases the flexibility of adjusting the diameter of the different corrugated sections of the electrode holder and reduces the difficulty of adjusting the wall of the radiofrequency ablation catheter.
- the rear ends of the plurality of wires may be fixed on the same control member, and the plurality of wires are collectively controlled by the same control member.
- the electrode holder of the radio frequency ablation catheter provided in this embodiment is composed of a plurality of corrugations having different sizes. Among them, all the corrugations may be different in size, or the same size may be used for partial corrugations, and the remaining corrugations may be of another size. Further, a plurality of corrugations may be provided in a size that is sequentially increased from the front end to the rear end of the electrode holder, or may be set in a size that is sequentially decreased from the front end to the rear end of the electrode holder.
- the radio frequency ablation catheter is provided with an anchoring wire 6 composed of a plurality of wires, which are respectively used for controlling different parts of the electrode holder, and the ripple of the corresponding area of the corrugated section can be changed by pulling different wires. Dimensions to achieve partial attachment of the electrode holder.
- the specific arrangement of the adhering wire 6 composed of a plurality of wires can be referred to the sixth embodiment and the seventh embodiment, and will not be repeated here.
- the radio frequency ablation catheter using the electrode holder is adapted to the case where the diameter of the target lumen gradually decreases from large to large.
- the radiofrequency ablation catheter can be used to ablate from a larger diameter vessel into a smaller diameter branch vessel.
- the small-diameter corrugated section can be adhered well by controlling a plurality of wires corresponding to the small-diameter corrugated section, thereby abating the branch small blood vessel using the small-diameter corrugated section; or, by controlling the plurality of wires, the large-diameter corrugation can be performed.
- the segment and the small-diameter corrugated segment are simultaneously adhered to simultaneously ablate the large blood vessel and the small blood vessel or sequentially ablate.
- the radio frequency ablation catheter using the electrode holder can be applied to a case where the diameter of the target lumen gradually increases from small to small.
- it is suitable for "trans-sympathetic nerve ablation of the renal pelvis region through the urethra system".
- the catheter enters the bladder through the urethra and then enters the fallopian tube to reach the renal pelvis region.
- the large-diameter corrugated segment and the renal pelvis region can be made by adjusting the adherent regulating wire.
- the adherence is good, the small-diameter corrugated section and the fallopian tube are well adhered, so that the sympathetic nerve near the fallopian tube and renal pelvis area can be ablated at the same time.
- the corrugated radio frequency ablation catheter is provided with an adherent adjustment wire, and by pulling the attachment adjustment wire backward, the corrugated diameter of the electrode holder can be changed, thereby improving the adhesion state of the electrode, so that the radiofrequency ablation catheter Suitable for blood vessels of different diameters.
- the above-mentioned adherent adjusting wire can also adopt a structure of a plurality of wires, thereby realizing separate control of different corrugated sections of the radio frequency ablation catheter, and simplifying the difficulty of diameter adjustment.
- the radiofrequency ablation catheter and radiofrequency ablation device provided by the invention It can be applied to nerve ablation of different sites, blood vessels or trachea of different diameters.
- it is applied to renal artery ablation for the treatment of patients with refractory hypertension.
- It is used in the treatment of diabetic patients with intra-abdominal artery ablation.
- it is applied to the treatment of asthma patients with tracheal/bronchial vagal branch ablation, and for duodenal vagus nerve.
- Branch ablation for patients with duodenal ulcer in addition, it can also be used for nerve ablation in other blood vessels or trachea, such as the renal pelvis and pulmonary artery.
- the radiofrequency ablation catheter provided by the present invention is not limited to the above enumerated applications in clinical treatment, and can also be used for nerve ablation in other parts.
- the radiofrequency ablation catheter provided by the present invention has been described above, and the present invention also provides a radiofrequency ablation device including the radiofrequency ablation catheter described above.
- the radiofrequency ablation device includes a radio frequency ablation catheter coupled to the radio frequency ablation catheter, in addition to the radio frequency ablation catheter.
- the anchoring wire inside the electrode holder is connected to the control handle through the connecting conduit, and the shape of the electrode bracket can be changed by pulling the adjusting wire of the wall through the control handle, so that the electrode bracket is well adhered in the target lumen of different diameters. .
- the radio frequency wires and the thermocouple wires in the electrode holder are respectively connected to corresponding circuits in the radio frequency ablation host through the connecting conduits, thereby realizing radio frequency control and temperature monitoring of the plurality of electrodes by the radio frequency ablation host. Since the setting of the control handle and the setting of the radio frequency ablation host can be referred to the prior patent application disclosed by the present applicant, the detailed structure thereof will not be described in detail herein.
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Abstract
Description
Claims (25)
- 一种具有贴壁调节丝的波纹型射频消融导管,具有长条形的连接导管,在所述连接导管的前端设有电极支架,在所述连接导管的后端设置有控制手柄;其特征在于:所述电极支架是由一个或多个波纹组成的波纹型电极支架,一个或多个电极分布在波纹上;所述贴壁调节丝的后段可滑动地设置于所述连接导管的其中一个管腔内,并且其后端连接至设置在所述控制手柄上的控制件上或者连接至外设的控制件上;所述贴壁调节丝的前段穿出所述电极支架外部后,经过设置在所述波纹上的一个或多个孔或者绕过多个波纹,然后其前端回到电极支架内部被固定。
- 如权利要求1所述的波纹型射频消融导管,其特征在于:所述贴壁调节丝的前端回到电极支架内部后,经过所述电极支架和所述连接导管内部的管腔回到连接导管后端,并被固定在所述控制手柄或者被固定在所述控制件上。
- 如权利要求1所述的波纹型射频消融导管,其特征在于:所述贴壁调节丝的前端被固定在所述电极支架前端。
- 如权利要求2或3所述的波纹型射频消融导管,其特征在于:还包括设置在所述连接导管和所述电极支架的某一管腔中的支撑丝。
- 如权利要求4所述的波纹型射频消融导管,其特征在于:还包括设置在所述电极支架内部的定型丝。
- 如权利要求4所述的波纹型射频消融导管,其特征在于:所述支撑丝的前端设置有显影头和/或软导丝。
- 如权利要求4所述的波纹型射频消融导管,其特征在于:所述控制手柄上或所述控制手柄外部还设置有用于与所述支撑丝的末端固定的第二控制件。
- 如权利要求2或3所述的波纹型射频消融导管,其特征在于:还包括固定设置在所述连接导管和所述电极支架的某一管腔中的支撑丝,所述支撑丝在所述电极支架内部的部分被定型为波纹型,构 成波纹定型段。
- 如权利要求1所述的波纹型射频消融导管,其特征在于:所述贴壁调节丝的前端回到电极支架内部后,穿出所述电极支架前端,并被固定在所述电极支架的前端或被限制在所述电极支架的前端的外部。
- 如权利要求9所述的波纹型射频消融导管,其特征在于:所述贴壁调节丝的前端设置有显影头和/或软导丝。
- 如权利要求10所述的波纹型射频消融导管,其特征在于:还包括设置在所述电极支架内部的定型丝。
- 如权利要求1所述的波纹型射频消融导管,其特征在于:还包括设置在所述连接导管和所述电极支架的某个管腔中的支撑丝,并且,所述贴壁调节丝的前端被固定在支撑丝上;或者,所述贴壁调节丝是所述支撑丝向外分出的细丝。
- 如权利要求12所述的波纹型射频消融导管,其特征在于:所述支撑丝在所述电极支架内部的部分被定型为波纹型,构成波纹定型段。
- 如权利要求1所述的波纹型射频消融导管,其特征在于:还包括设置在所述电极支架的某个管腔中的定型丝,并且,所述贴壁调节丝的前端被固定在所述定型丝上;或者,所述贴壁调节丝是所述定型丝向外分出的细丝。
- 如权利要求1所述的波纹型射频消融导管,其特征在于:所述贴壁调节丝由两根或两根以上的多根丝组成,多根丝分别用于调节所述电极支架上的一个或者一段波纹,其中一段波纹中包括两个及两个以上的多个波纹,每根丝的前端分别固定在对应波纹/波纹段的一端,另一端绕过对应波纹/波纹段后,并经由电极支架内部和连接导管内部的管腔,然后被固定在设置在所述控制手柄上的对应控制件或者外设的控制件上。
- 如权利要求15所述的波纹型射频消融导管,其特征在于:所述多根丝的对应控制件是同一控制件。
- 如权利要求15所述的波纹型射频消融导管,其特征在于:所述多根丝分别控制的多段波纹之间有重叠。
- 如权利要求1所述的波纹型射频消融导管,其特征在于:所述电极支架包括外管,在所述外管的外圆周上嵌设有电极,在所述外管的内部设置有一个或多个管腔,其中部分管腔中分别设置有一组热电偶丝和射频线;每个所述电极的内部设置有一组射频线和热电偶丝,所述射频线与所述电极连接,所述热电偶丝与所述电极绝缘设置。
- 如权利要求1所述的波纹型射频消融导管,其特征在于:所述波纹的形状是由多段直线组成的折线,或者是由多段曲线组成,或者是由曲线和直线组成。
- 如权利要求1所述的波纹型射频消融导管,其特征在于:所述贴壁调节丝在所述电极支架上偏心设置。
- 如权利要求1所述的波纹型射频消融导管,其特征在于:所述电极设置在所述波纹的波峰/波谷位置。
- 如权利要求1所述的波纹型射频消融导管,其特征在于:组成所述电极支架的多个波纹的形状和尺寸不同。
- 如权利要求22所述的波纹型射频消融导管,其特征在于:组成所述电极支架的多个波纹从电极支架的前端向后端以依次递增的尺寸设置,或者,组成所述电极支架的多个波纹从电极支架的前端向后端以依次递减的尺寸设置。
- 一种具有贴壁调节丝的波纹型射频消融导管,具有长条形的连接导管,在所述连接导管的前端设有电极支架,在所述连接导管的后端设置有控制手柄;其特征在于:所述电极支架是由多个波纹组成的波纹型电极支架,一个或多个电极分布在波纹上;所述贴壁调节丝由两根或两根以上的多根丝组成,多根丝分别用于调节所述电极支架上的一个或者一段波纹,其中一段波纹中包括两个及两个以上的多个波纹,每根丝的前端分别固定在对应波纹/波纹段的一端,另一端绕过对应波纹/波纹段后,经由电极支架内部和连接导管内部的管腔,然后被固定在设置在所述控制手柄上的对应控制件或者外设的控制件上。
- 一种射频消融设备,其特征在于包括权利要求1~24中任意 一项所述的射频消融导管,以及与所述射频消融导管连接的射频消融主机。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/573,462 US20180116712A1 (en) | 2015-05-13 | 2016-05-10 | Corrugated radiofrequency ablation catheter having wall-attaching adjustment wires and apparatus thereof |
ES16792177T ES2935607T3 (es) | 2015-05-13 | 2016-05-10 | Catéter de ablación por radiofrecuencia corrugado que tiene alambres de ajuste de unión a la pared y aparatos del mismo |
EP16792177.4A EP3295885B1 (en) | 2015-05-13 | 2016-05-10 | Corrugated radiofrequency ablation catheter having wall-attaching adjustment wires and apparatus thereof |
JP2017558658A JP6852898B2 (ja) | 2015-05-13 | 2016-05-10 | 密着調節ワイヤを有する波紋型高周波アブレーションカテーテル |
US18/089,753 US20230129393A1 (en) | 2015-05-13 | 2022-12-28 | Corrugated radiofrequency ablation catheter having wall-attaching adjustment wire and apparatus thereof |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
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CN201510244254.2 | 2015-05-13 | ||
CN201510244254 | 2015-05-13 | ||
CN201520605029.2 | 2015-08-12 | ||
CN201520605029.2U CN205019161U (zh) | 2015-08-12 | 2015-08-12 | 具有贴壁调节丝的波纹型射频消融导管及其设备 |
CN201510492572.0A CN105078571B (zh) | 2015-05-13 | 2015-08-12 | 具有贴壁调节丝的波纹型射频消融导管及其设备 |
CN201510492572.0 | 2015-08-12 |
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US18/089,753 Continuation-In-Part US20230129393A1 (en) | 2015-05-13 | 2022-12-28 | Corrugated radiofrequency ablation catheter having wall-attaching adjustment wire and apparatus thereof |
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EP (1) | EP3295885B1 (zh) |
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CN114569232A (zh) * | 2022-04-11 | 2022-06-03 | 上海安通医疗科技有限公司 | 一种超声消融导管 |
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NL2022504B1 (en) | 2019-02-04 | 2020-08-19 | Elstar Dynamics Patents B V | Improved optical modulator |
US11099451B1 (en) | 2020-07-31 | 2021-08-24 | Elstar Dynamics Patents B.V. | Light modulator, substrate comprising electrodes and smart glazing |
US11099453B1 (en) | 2020-08-03 | 2021-08-24 | Elstar Dynamics Patents B.V. | Light modulator, light modulator method and smart glazing |
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- 2016-05-10 JP JP2017558658A patent/JP6852898B2/ja active Active
- 2016-05-10 ES ES16792177T patent/ES2935607T3/es active Active
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CN114569232B (zh) * | 2022-04-11 | 2023-05-05 | 上海安通医疗科技有限公司 | 一种超声消融导管 |
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JP6852898B2 (ja) | 2021-03-31 |
EP3295885A1 (en) | 2018-03-21 |
EP3295885A4 (en) | 2019-02-06 |
EP3295885B1 (en) | 2022-11-30 |
US20180116712A1 (en) | 2018-05-03 |
JP2018515226A (ja) | 2018-06-14 |
ES2935607T3 (es) | 2023-03-08 |
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