CN215688241U - Electrode device and shock wave generation system - Google Patents
Electrode device and shock wave generation system Download PDFInfo
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- CN215688241U CN215688241U CN202122081226.7U CN202122081226U CN215688241U CN 215688241 U CN215688241 U CN 215688241U CN 202122081226 U CN202122081226 U CN 202122081226U CN 215688241 U CN215688241 U CN 215688241U
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Abstract
The utility model provides an electrode device and a shock wave generation system, the device comprises a conduit and an electrode unit, wherein the electrode unit comprises a plurality of electrodes, the electrode device also comprises an annular component which surrounds the circumference of the conduit and is arranged outside the conduit, the plurality of electrodes are distributed along the circumference of the conduit, and each electrode is respectively arranged in the annular component in a penetrating way or between the annular component and the conduit and keeps part of the circumferential surface exposed; one or more conducting spaces are formed in the annular component corresponding to the exposed surface of one electrode, the conducting spaces are used for communicating the exposed surface of one electrode with spaces outside the electrode device, when conducting liquid is filled in the conducting spaces and the electrode device is connected with electricity, shock waves are formed between the conducting spaces corresponding to two adjacent electrodes respectively, and the annular component is an insulating piece. According to the utility model, the annular member and the electrode units are arranged, the conduction spaces are formed on the annular member, and shock waves are formed between the conduction spaces corresponding to two adjacent electrodes respectively, and have directivity and good shock wave effect.
Description
Technical Field
The utility model belongs to the technical field of medical equipment, and particularly relates to an electrode device and a shock wave generation system.
Background
Cardiovascular stenosis refers to the condition that lipid in blood is deposited on the originally smooth vascular intima due to abnormal lipid metabolism of human artery and vein vessels, wrapped coronary vessels, periphery, intracranial vessels and the like, lipid plaques of atheroma are gradually accumulated, and the plaques are increased and even calcified to cause the stenosis in the vascular cavity along with the time, so that the blood flow is blocked, the blood vessels and the human body at the downstream are ischemic, and the corresponding clinical manifestations are generated. If the stenosis occurs in coronary artery, palpitation, chest pain, dyspnea and angina can be caused, and serious patients can cause insufficient blood supply to cardiac muscle or cardiac muscle necrosis; if the disease occurs in the periphery, the skin epidermis temperature is reduced, the muscle is atrophied, intermittent claudication is generated, and even necrosis or amputation of the far-end limb occurs; if it occurs in the cranium, dizziness, syncope, brain tissue damage and brain dysfunction may occur.
See chinese patent CN111568500A and disclose a blood vessel recanalization system for treating calcified blood vessels, comprising a balloon, an energy generation controller, and a catheter, wherein the catheter comprises a main tube, one end of the catheter is connected with the energy generation controller, the main tube at the other end of the catheter is connected with one end of the balloon, the balloon mainly comprises a balloon main body, an inner tube and an electrode pair, the inner tube is arranged inside the balloon main body, and the energy generation controller can send and regulate a vibration signal with specific frequency to enable the electrode pair to generate a shock wave.
However, the electrodes of the electrode pair in the balloon are annular, the electrodes are conductive as a whole, which means that countless points are parallel, which cannot know which area on the electrodes generates the oscillation wave, and the area generating the oscillation wave cannot be controlled.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an electrode device for treating vascular calcification lesions and a shock wave generation system, which are used for solving the problem that the area and the direction of the generated shock wave cannot be controlled.
In order to achieve the purpose, the utility model adopts a technical scheme that:
an electrode device comprises a catheter, an electrode unit and an annular member, wherein the electrode unit comprises a plurality of electrodes, the annular member surrounds the circumference of the catheter and is arranged outside the catheter, the plurality of electrodes are distributed along the circumference of the catheter, each electrode is respectively arranged in the annular member or between the annular member and the catheter in a penetrating way, and part of the circumferential surface is kept exposed; one or more conducting spaces are formed in the position, corresponding to the exposed surface of one electrode, of the annular component and are used for communicating the exposed surface of one electrode with the space outside the electrode device, so that when conducting liquid is filled in the conducting spaces and the electrode device is connected with electricity, shock waves are formed between the conducting spaces corresponding to the two adjacent electrodes respectively, and the annular component is an insulating piece.
Preferably, the electrode unit comprises a positive electrode used for connecting a positive electrode and a negative electrode used for connecting a negative electrode, for one current path, a conduction space is respectively opened on the annular component corresponding to the exposed surface of the positive electrode and the exposed surface of the negative electrode, and a shock wave is formed between the conduction space corresponding to the positive electrode and the conduction space corresponding to the negative electrode.
Preferably, the electrode unit includes a positive electrode for connecting to a positive electrode, a negative electrode for connecting to a negative electrode, and an intermediate electrode, the positive electrode and the negative electrode are disposed adjacent to each other, for a current path, a conduction space is respectively opened on the annular member at a position corresponding to an exposed surface of the positive electrode and an exposed surface of the negative electrode, two conduction spaces are respectively opened on the annular member at a position corresponding to an exposed surface of the intermediate electrode, and a shock wave is formed between the conduction spaces corresponding to the positive electrode and the intermediate electrode and between the conduction spaces corresponding to the intermediate electrode and the negative electrode.
Preferably, the electrode unit includes a positive electrode for connecting to a positive electrode, a negative electrode for connecting to a negative electrode, and a plurality of intermediate electrodes, the positive electrode and the negative electrode are disposed adjacent to each other, for a current path, a conduction space is respectively opened on the annular member at a position corresponding to an exposed surface of the positive electrode and an exposed surface of the negative electrode, two conduction spaces are respectively opened on the annular member at a position corresponding to an exposed surface of the intermediate electrode, and a shock wave is formed between the conduction spaces corresponding to the positive electrode and the adjacent intermediate electrode, between the conduction spaces corresponding to the adjacent two intermediate electrodes, and between the negative electrode and the conduction space corresponding to the adjacent intermediate electrode.
Preferably, when the electrode device works, the current sequentially passes through the positive electrode, the one or more intermediate electrodes and the negative electrode to form a current path.
Preferably, the annular member includes an insulating sleeve, the insulating sleeve has a connecting hole located in the middle and used for being sleeved with the catheter, the insulating sleeve is further provided with a plurality of through holes extending along the length direction of the insulating sleeve, the plurality of through holes are distributed around the connecting hole, the plurality of electrodes respectively and correspondingly penetrate through the plurality of through holes, at least one side of the insulating sleeve located in the through holes is provided with a slot with an outward opening, the slot is communicated with the through holes, so that at least part of the surface of the electrode located in the through hole is exposed, and the inner space of the slot forms the conduction space.
Preferably, the insulating sheath comprises a sheath body made of a non-conductive material; or the insulating sleeve comprises a sleeve body made of a conductive material or a non-conductive material and an insulating coating arranged on the surface of the sleeve body.
Preferably, the annular member includes an annular sleeve body and a filler, the sleeve body is sleeved outside the catheter, the filler is filled between the sleeve body and the catheter, the same portion of the sleeve body and the filler is provided with a slot with an outward opening, so that at least part of the surface of the electrode is exposed at the opening, and the internal space of the slot forms the conduction space.
Preferably, the annular member is provided in plurality with one or more, and when a plurality of the annular members are provided, a plurality of the annular members are axially distributed along the conduit.
The other technical scheme adopted by the utility model is as follows:
a shock wave generation system comprises an electrode device and a balloon, wherein an insulating sleeve is positioned in the balloon.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
according to the utility model, the annular member and the electrode unit are arranged, the conduction spaces are formed on the annular member, shock waves are formed between the conduction spaces corresponding to the two adjacent electrodes respectively, the shock waves have directionality, and the position, the direction and the size of the shock waves can be controlled by adjusting the position, the shape and the size of the conduction spaces on the annular member, so that the best shock wave effect is achieved; the annular component can limit the movement of the electrode unit, so that the position, the direction and the shape of a conducting space are stable, the integral installation is more stable, and the discharge of the conduit is more stable and safer when the conduit is used; and the structure is simple and easy to realize.
Drawings
FIG. 1 is a view showing the entire structure of an electrode assembly according to a third embodiment;
FIG. 2 is a schematic structural view of an electrode assembly according to a third embodiment;
FIG. 3 is another schematic structural view of an electrode assembly according to a third embodiment;
FIG. 4 is a schematic view showing still another structure of the electrode assembly according to the third embodiment;
FIG. 5 is a schematic structural view of an electrode assembly according to the first embodiment;
FIG. 6 is a schematic view of a second embodiment of an electrode assembly;
FIG. 7 is a schematic structural view of an electrode assembly according to a fourth embodiment;
FIG. 8 is a schematic structural view of an electrode assembly according to a fifth embodiment;
FIG. 9 is a schematic view of the catheter;
FIG. 10 is a schematic structural view of a shock wave generation system;
fig. 11 is an enlarged view of a portion a of fig. 10.
In the above drawings:
1. the device comprises a catheter, 11, a groove, 2, an annular component, 21, a conducting space, 23, a perforation, 24, a connecting hole, 25, a sleeve body, 26, a filling body, 3, a positive electrode, 4, a negative electrode, 5, a middle electrode, 6-an energy generating unit, 7-a balloon, 8-a handle and 9-a marking ring.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The electrode device shown in fig. 1 to 9 includes a catheter 1, an electrode unit, and a ring member 2, the ring member 2 being an insulator, wherein: the annular component 2 surrounds the circumference of the catheter 1 and is arranged outside the catheter 1, a plurality of electrodes are distributed along the circumference of the catheter 1, each electrode is arranged in the annular component 2 or between the annular component 2 and the catheter 1 in a penetrating mode and keeps part of the circumferential surface exposed, one or more conducting spaces 21 are formed in the position, corresponding to the exposed surface of one electrode, of the annular component 2, the conducting spaces 21 are used for communicating the exposed surface of one electrode with spaces outside the electrode device, and therefore when the conducting spaces 21 are filled with conducting liquid and the electrode device is connected with electricity, shock waves are formed between the conducting spaces 21 corresponding to two adjacent electrodes respectively. The conductive liquid may be a mixed solution of a contrast liquid and a physiological saline.
The catheter 1 has relatively distal ends, the annular member 2 being disposed adjacent one of the ends, one of the ends being adjacent the site of the lesion, the annular member 2 being adjacent the site of the lesion in use, e.g. the annular member 2 being disposed at or adjacent an end of the catheter 1.
As shown in fig. 9, the cross section of the catheter 1 is circular or polygonal, for example, the catheter 1 may be a conventional extruded circular tube, or the catheter 1 is provided with a plurality of grooves 11 (recessed toward the center of the catheter 1) along the axial direction thereof for placing electrodes, that is, each groove 11 is provided with or corresponds to an electrode, which facilitates routing and corresponds to the conducting space 21 on the annular member 2. For example, the catheter 1 is a slotted angular tube, such as a pentagonal, hexagonal, hexagonally slotted tube, or the like.
The electrode is made of metal, conductive adhesive or graphene, wherein the metal is selected from gold, silver, copper, tantalum, stainless steel, tungsten alloy or platinum-iridium alloy, and preferably the stainless steel.
The exposed surface of the electrode means that the conductive part of the electrode is exposed at the opening of the conducting space 21, when the conducting space 21 is filled with a conductive liquid, the exposed conductive part (exposed surface) of the electrode can contact with the conductive solution, and the area of the exposed surface of each electrode is set according to the required shock wave intensity and the lesion position, for example, the ratio of the exposed surface of each electrode to the surface area of the electrode is greater than 0 and less than 100%, and the range can be 1% -70%, such as 10%, 20%, 30%, 40%, 50%, 60%, or 70%.
The electrode is in various shapes such as strip shape, spherical shape and the like, for example, the electrode is flat or circular, when the electrode is in a long strip shape, a plurality of electrodes are distributed along the circumferential direction of the catheter, each electrode respectively penetrates through the annular member 2 or between the annular member 2 and the catheter, the electrodes and the catheter 1 are preferably parallel, the structure is simple, the installation is convenient, the annular member 2 is conveniently arranged outside the catheter 1, the conduction space 21 is aligned to the corresponding electrode, and the design and the control of the conduction space 21 are convenient. When the electrodes are in the shape of long strips, the electrodes are metal wires, metal rods, metal spring strips, metal tubes or metal spring tubes, and the electrodes can be made of the same material or different materials. In the case where the electrode is an insulated wire, the inner core wire (copper wire) may be exposed by removing the sheath, and the inner core wire may be exposed through the opening of the conducting space 21, and the electrode gauge is preferably AWG10 to AWG 46. The catheter 1 is made of polyurethane, preferably Pebax, and may also be FEP, nylon, polyimide, or PTFE.
The surface of the electrode is directly disposed outside the guide duct 1 without an insulating layer, and when the annular member 2 is disposed outside the guide duct 1, the exposed surface of the electrode is exposed at the opening of the conduction space 21.
Or the surface of the electrode is provided with an insulating layer, when the annular member 2 is arranged outside the catheter 1, the insulating layer of the electrode is perforated (i.e. a part of the insulating layer is removed) corresponding to the conducting space 21, so that the exposed surface of the electrode is exposed (i.e. the exposed electrode part is not provided with the insulating layer). The insulating layer is an insulating coating or insulating tubes respectively sleeved outside the electrodes, namely one insulating tube can be sleeved on one electrode.
The diameter range of the electrode is 0.05-1.0mm, the thickness of the annular component 2 is slightly larger than or larger than the diameter of the electrode, the overall diameter of the annular component 2, the electrode and the catheter 1 is within 1-3mm, the overall outer diameter is not excessively increased, and the applicability of the electrode device on any lesion part is not influenced.
The annular member 2 is an insulating part and has the following specific structure:
when the annular member 2 includes an insulating sleeve, the insulating sleeve has a connecting hole 24 located in the middle and used for sleeving the catheter 1, a plurality of through holes 23 extending along the length direction of the insulating sleeve are further arranged on the insulating sleeve (each electrode is respectively arranged in the corresponding through hole 23 through the annular member 2 along the length direction, one electrode is arranged in one through hole 23), the plurality of through holes 23 are distributed around the connecting hole 24, the plurality of electrodes respectively penetrate through the plurality of through holes 23, a slot with an outward opening is formed on at least one side of the through hole 23 of the insulating sleeve, the slot is communicated with the through hole 23, so that at least part of the surface of the electrode located in the through hole 23 is exposed, and a conducting space 21 is formed in the inner space of the slot.
The aperture of the through hole 23 is smaller than the wall thickness of the insulating sleeve, the depth of the groove is smaller than or equal to the wall thickness of the insulating sleeve, the bottom of the groove extends to the position of the through hole 23, and the depth of the groove is smaller than the wall thickness of the insulating sleeve; alternatively, the bottom of the slot may extend to the outer wall of the pipe 1, where the depth of the slot is equal to the wall thickness of the insulating sheath.
In this case, except for the position of the through space 21, the annular member 2 is of a solid construction between the connection hole 24 and, when assembled: the annular member 2 is sleeved on the designated position outside the catheter 1, and then the electrode is inserted into the through hole 23. Or during assembly: the electrode is inserted into the through hole 23 of the annular member 2, and then the annular member 2 is sleeved outside the catheter 1. When the electrode is in the through hole 23 (if the through hole 23 is internally provided with the positive electrode 3 and the negative electrode 4, the two ends of the through hole 23 with the electrode placed are sealed by injecting glue at one end, the electrode in the through hole is connected with an external lead at the other end, and then sealed by injecting glue, or the electrode extends out of the other end to be connected with a wire), the diameter of the electrode is slightly smaller than that of the through hole 23, the electrode cannot shake in the through hole 23, and the position is fixed. Or the electrode penetrates into the through hole 23 and is filled with insulating glue for bonding, and when the electrode is used, the glue exposed on the electrode at the conducting space 21 is removed, so that the electrode can be electrified for use.
Or the annular member 2 is made of an insulating jelly, when assembled, the electrode is fixedly placed outside the catheter 1 (e.g., bonded), then the insulating jelly is coated outside the electrode to form a sheath, for example, the electrode with a preset length is coated, so that the electrode cannot be exposed, after the insulating jelly is solidified, a groove is formed in the insulating jelly (the material is removed), so that at least part of the surface of the electrode is exposed at the opening of the groove, and the inner space of the groove forms a conducting space 21.
The insulating sleeve comprises a sleeve body made of a non-conductive material, the sleeve body is an integrally formed part, for example, the sleeve body is a structural part formed in an injection molding or other forming mode, or a structural part in a shape formed by jelly such as epoxy glue or ultraviolet curing glue through a mold with a corresponding appearance, or the sleeve body is a coating body formed by coating on an electrode.
Or the insulating sleeve comprises a sleeve body made of a conductive material or a non-conductive material and an insulating coating arranged on the surface of the sleeve body, a through hole and a groove can be formed in the sleeve body, and the sleeve body made of the conductive material has high structural strength and high impact resistance. The non-conductive material is polyimide, epoxy glue or ultraviolet curing glue, and the conductive material is metal. When the sleeve body is made of conductive materials, the inner wall of the conduction space 21 and the inner wall of the through hole 23 are coated with insulating coatings.
Or the annular member 2 comprises an annular sleeve body 25 and a filler 26, the annular sleeve body 25 and the filler 26 are both made of non-conductive materials, the sleeve body 25 is sleeved outside the catheter 1, the filler 26 is filled between the sleeve body 25 and the catheter 1, the same part of the sleeve body 25 and the filler 26 is provided with a groove with an outward opening, at least part of the surface of the electrode is exposed at the opening of the groove, and the inner space of the groove forms a conduction space 21. In this case, the sleeve body 25 is in a hollow ring shape, that is, the outer wall thereof is thin and has a connection hole 24 for the conduit 1 to pass through, when assembling, after the electrode is fixedly placed outside the conduit 1 (for example, bonding), the sleeve body 25 is sleeved outside the conduit 1, at this time, the inner wall of the sleeve body 25 does not contact with the electrode, after positioning, the filling body 26 is filled between the sleeve body 25 and the electrode (for example, the filling body 26 is formed by an insulating jelly), so that the electrode in the sleeve body 25 is covered by the insulating material, then the same part of the sleeve body 25 and the filling body 26 is separately grooved (the material of the same part is removed), so that at least part of the surface of the electrode is exposed at the opening, and the grooved inner space forms the conduction space 21. The annular sleeve body 25 is made of a non-conductive material, such as polyimide, epoxy glue or ultraviolet curing glue.
The annular component 2 is in a closed ring shape, such as a circular ring, a polygonal ring (such as a square ring and a triangular ring), an elliptical ring or any other shape; or the annular member 2 is non-annularly closed, such as C-shaped, in the form of a ring with a gap.
The thickness of the ring-shaped member 2 may be uniform or non-uniform except at the position of the conduction space 21, and the use is not affected. The annular component 2 is arranged to limit the movement of the electrode, so that the position and the shape of the conduction space 21 are stable, the whole installation is more stable, and the discharge of the conduit 1 is more stable and safer when the conduit is used.
The electrode unit comprises a positive electrode 3 used for connecting a positive electrode and a negative electrode 4 used for connecting a negative electrode, for one current path, a conducting space 21 is respectively arranged on the annular component 2 corresponding to the exposed surface of the positive electrode 3 and the exposed surface of the negative electrode 4, and a shock wave is formed between the conducting space 21 corresponding to the positive electrode 3 and the conducting space 21 corresponding to the negative electrode 4.
When the electrode unit includes the positive electrode 3 and the negative electrode 4, the operation principle of generating the shock wave in the conducting space 21 is as follows: the electrode is a lead (conductor), the conducting space 21 is filled with conducting solution during working, the exposed surface of the electrode can be immersed in a conducting fluid medium, positive and negative voltages are respectively applied to the positive electrode 3 and the negative electrode 4 during working, when the voltages reach a certain value, the conducting solution in the conducting space 21 is broken down to generate a cavitation effect, current sequentially passes through the positive electrode 3 and the negative electrode 4 to form a current path, and shock waves are formed between the conducting space 21 corresponding to the positive electrode 3 and the conducting space 21 corresponding to the negative electrode 4 to break and crack plaques in narrow positions so as to treat calcified lesion positions of blood vessels.
Or, the electrode unit comprises a positive electrode 3 for connecting with a positive electrode, a negative electrode 4 for connecting with a negative electrode, and an intermediate electrode 5, and for a current path, a conducting space 21 is respectively formed on the annular component 2 corresponding to the exposed surface of the positive electrode 3 and the exposed surface of the negative electrode 4; two conducting spaces 21 are respectively formed on the annular member 2 corresponding to the exposed surface of the intermediate electrode 5, and the two conducting spaces 21 are independent from each other, i.e., a gap is formed between the two conducting spaces 21. Shock waves are formed between the conducting spaces 21 corresponding to the positive electrode 3 and the adjacent intermediate electrode 5, and between the negative electrode 4 and the conducting spaces 21 corresponding to the adjacent intermediate electrode 5.
Alternatively, the electrode unit includes a positive electrode 3 for connecting to a positive electrode, a negative electrode 4 for connecting to a negative electrode, and a plurality of intermediate electrodes, and for one current path, one conducting space 21 is opened on the annular member 2 corresponding to the exposed surface of the positive electrode 3 and the exposed surface of the negative electrode 4, respectively, and the two conducting spaces 21 are independent of each other, that is, a gap is provided between the two conducting spaces 21. Two conducting spaces 21 are respectively formed on the annular member 2 corresponding to the exposed surface of the intermediate electrode, the two conducting spaces 21 are arranged along the axial direction of the intermediate electrode, and the two conducting spaces 21 are independent from each other, i.e. a gap is formed between the two conducting spaces 21. Shock waves are formed between the conducting spaces 21 corresponding to the positive electrode 3 and the adjacent intermediate electrode, between the conducting spaces 21 corresponding to the two adjacent intermediate electrodes, and between the negative electrode 4 and the conducting space 21 corresponding to the adjacent intermediate electrode.
When the first distance between the conducting spaces 21 corresponding to the positive electrode 3 and the negative electrode 4 is larger than the second distance between the conducting spaces 21 corresponding to the positive electrode 3 and the intermediate electrode adjacent thereto, it is equivalent to the positive electrode 3 and the negative electrode 4 being arranged to be insulated from each other. If one positive electrode 3, one intermediate electrode 5, and one negative electrode 4 are provided, for one current path, a current flows from the conducting space 21 corresponding to the positive electrode 3 to the conducting space 21 corresponding to the adjacent intermediate electrode 5, a shock wave is generated between the two conducting spaces 21 (a shock wave is generated at a position where the current is left), and then the current flows from the conducting space 21 corresponding to the intermediate electrode 5 to the conducting space 21 corresponding to the negative electrode 4, and a shock wave is generated between the two conducting spaces 21. When one positive electrode 3 and one negative electrode 4 are provided, and two or more intermediate electrodes are provided, for one current path, current flows from the conduction space 21 corresponding to the positive electrode 3 to the conduction space 21 corresponding to the adjacent intermediate electrode, a shock wave is generated between the two conduction spaces 21, current flows from the conduction space 21 corresponding to the intermediate electrode to the conduction space 21 corresponding to the adjacent intermediate electrode, a shock wave is generated between the two conduction spaces 21 (the other intermediate electrodes sequentially flow), and finally, the current flows from the conduction space 21 corresponding to the intermediate electrode adjacent to the negative electrode 4 to the conduction space 21 corresponding to the negative electrode 4, and a shock wave is generated between the two conduction spaces 21.
The first pitch is the sum of the distance between the exposed surface of the positive electrode 3 and the corresponding conduction space 21 (see d in fig. 2), the circumferential distance between the conduction space 21 corresponding to the positive electrode 3 and the conduction space 21 corresponding to the negative electrode 4 (see e in fig. 2), and the distance between the exposed surface of the negative electrode 4 and the corresponding conduction space 21 (see f in fig. 2), and the second pitch is the sum of the distance between the exposed surface of the positive electrode 3 and the corresponding conduction space 21 (see a in fig. 2), the circumferential distance between the conduction space 21 corresponding to the positive electrode 3 and the conduction space 21 corresponding to the intermediate electrode 51 adjacent thereto (see b in fig. 2), and the distance between the exposed surface of the intermediate electrode 51 and the corresponding conduction space 21 (see c in fig. 2).
In each electrode unit, the number of the positive electrodes 3 and the negative electrodes 4 is one, and the number of the intermediate electrodes 5 is 1, 2, 3, 4, 5, 6 or more. In practice, the total number of the positive electrode 3, the negative electrode 4 and the intermediate electrode 5 can be 3-10.
The length of the intermediate electrode 5 is smaller than the axial length of the annular member 2, and the intermediate electrode 5 is not required to be wired and is only placed in the corresponding through hole 23 of the annular member 2. Or the lengths of the positive electrode 3 and the negative electrode 4 are smaller or larger than the axial length of the annular member 2. When connected, the positive electrode 3 and the negative electrode 4 can extend out of the annular member 2 and be connected with the positive electrode and the negative electrode of the energy generation unit 6 respectively, or the positive electrode 3 and the negative electrode 4 can extend out of the annular member 2 and be connected with the positive electrode and the negative electrode of the energy generation unit 6 respectively in the annular member 2.
When the electrode unit includes the positive electrode 3, the negative electrode 4, and the intermediate electrode 5, the operation principle of generating the shock wave in the conducting space 21 is as follows: the positive electrode 3, the negative electrode 4 and the intermediate electrode 5 are leads (conductors), when the electrode device works, the conducting space 21 is filled with conducting liquid, the exposed surface of the electrode can be immersed in a conducting fluid medium, positive and negative voltages are respectively applied to the positive electrode 3 and the negative electrode 4, when the voltages reach a certain value, the conducting solution in the conducting space 21 is broken down to generate a cavitation effect, current sequentially passes through the positive electrode 3, one or more intermediate electrodes and the negative electrode 4 to form a current path, one intermediate electrode is arranged, and shock waves are formed between the conducting spaces 21 corresponding to the positive electrode 3 and the intermediate electrodes and between the conducting spaces 21 corresponding to the intermediate electrodes and the negative electrodes 4; the plurality of intermediate electrodes are arranged, shock waves are formed between the positive electrode 3 and the conduction space 21 corresponding to the adjacent intermediate electrode, between the conduction spaces 21 corresponding to the two adjacent intermediate electrodes, and between the negative electrode 4 and the conduction space 21 corresponding to the adjacent intermediate electrode, so that plaque breaking and cracking at a narrow position are realized, and a calcified lesion position of a blood vessel is treated.
Viewed in cross section (in the direction of fig. 1) of the electrode device, a plurality of lead-through spaces 21 are distributed along the circumference of the catheter, each lead-through space 21 having a fan shape, a square shape or any other shape.
The plurality of electrode units are arranged along the axial direction of the annular component 2, and a plurality of conducting spaces 21 are formed in the axial direction to act on a large-area calcified lesion blood vessel of the blood vessel, so that calcified plaque is cracked, and the treatment effect is improved. In one electrode unit, a plurality of electrodes are uniformly distributed around the catheter 1, and the formed conducting spaces 21 are uniformly distributed around the catheter 1, so that the generated shock waves can more uniformly act on the calcified lesion positions of the blood vessels.
The conduction space 21 can be circular, oval, square, trapezoidal or other realizable shapes, if the conduction space 21 gradually becomes larger from inside to outside, the direction that the inner finger is close to the center of the catheter 1 and the direction that the outer finger is far away from the catheter 1 are pointed out, namely, the opening close to the hole outside the catheter 1 is larger than the opening close to the hole of the catheter 1, the conduction space 21 is convenient to form shock waves which gradually diffuse outwards, the shock waves impact the calcified area to be larger, and the calcified lesion of a larger area is broken up.
The conducting space 21 provided on the annular member 2 can generate shock waves in a specific direction to perform targeted therapy on a specific lesion position. The conducting space 21 is distributed along the axial direction and/or the circumferential direction of the annular component 2 to form a plurality of regions for generating shock waves, so that the periphery (whole circle) of the catheter 1 can generate shock waves in a specific direction, and a plurality of specific lesion positions can be treated in a targeted manner to act on a large-area calcified lesion blood vessel of the blood vessel, so that calcified plaques are cracked, and the treatment effect is improved. The position, shape and size of the lead-through space 21 may be varied to control the position, direction and/or size of the shock wave generation.
The annular members 2 are arranged along the axial direction of the catheter 1, a plurality of electrodes are arranged in each annular member 2 in a penetrating mode or a plurality of electrodes are arranged between each annular member 2 and the catheter 1, gaps or contact can be kept between every two adjacent annular members 2, a plurality of conducting spaces 21 can be formed on the annular members 2 in the axial direction of the catheter 1, so that shock waves with a large range can be generated, in use, a large-area vascular calcification lesion blood vessel can be treated by extending into the lesion part once or a small number of times, namely the catheter 1 does not need to be fed into the lesion part inside for multiple times, and operation time can be greatly reduced.
A shock wave generating system, see fig. 10 and 11, comprises an electrode device, an energy generating unit 6 and a balloon 7, wherein an annular member 2 is positioned in the balloon 7, an electric conductive fluid medium is filled in the balloon 7, and a conducting space 21 on the annular member 2 can be filled with the electric conductive fluid medium. The two electrodes are respectively connected with the positive electrode and the negative electrode of the energy generation unit, for example, the positive electrode 3 and the negative electrode 4 are respectively connected with the positive electrode and the negative electrode of the energy generation unit 6. The system also comprises a handle 8, the handle 8 is arranged on the catheter 1, the handle 8 is connected with the energy generating unit 6 and used for controlling the operation of the energy generating unit 6, and a plurality of marking rings 9 used for indicating the length are sleeved outside the catheter 1 positioned in the balloon 7.
The following first to fifth embodiments specifically show the case where 0 to 4 intermediate electrodes are provided.
Example one
In the present embodiment, referring to fig. 5, the annular member 2 is an insulating sheath, and the positive electrode 3 and the negative electrode 4 are provided one by one.
The annular member 2 is provided with a conduction space 21 corresponding to the exposed surface of the positive electrode 3 and the exposed surface of the negative electrode 4, respectively, and a shock wave (energy release) is generated between the two conduction spaces 21.
Example two
In the present embodiment, referring to fig. 6, the annular member 2 is an insulating sheath, only one of the positive electrode 3, the negative electrode 4, and the intermediate electrode 5 is provided, and the positive electrode 3, the negative electrode 4, and the intermediate electrode 5 are circumferentially spaced by 120 degrees.
The annular member 2 is provided with a conduction space 21 corresponding to the exposed surface of the positive electrode 3, the exposed surface of the intermediate electrode 5 and the exposed surface of the negative electrode 4, and shock waves (energy release) are formed between the conduction spaces 21 corresponding to the positive electrode 3 and the intermediate electrode 5 and between the conduction spaces 21 corresponding to the intermediate electrode 5 and the negative electrode 4.
EXAMPLE III
This embodiment is substantially the same as the second embodiment, except that:
in the present embodiment, referring to fig. 1 to 4, only one positive electrode 3 and only one negative electrode 4 are provided, two intermediate electrodes are provided, and the positive electrode 3, the negative electrode 4, and the two intermediate electrodes (51, 52) are circumferentially spaced by 90 degrees.
In fig. 3 and 4, the conduit 1 is a circular tube, and the annular component 2 is an insulating sleeve; in fig. 1 and 2, the catheter 1 is provided with four grooves 11, and the annular member 2 is an insulating sleeve; in fig. 4, the catheter 1 is a circular tube, and the annular member 2 includes a sheath body 25 and a filler 26. The conducting space 21 shown by a dotted line in fig. 1 refers to a conducting space formed at the positive electrode 3 and located on the back side.
The annular component 2 is provided with a conducting space 21 corresponding to the exposed surface of the positive electrode 3 and the exposed surface of the negative electrode 4, the annular component 2 is provided with two conducting spaces 21 corresponding to the exposed surfaces of the intermediate electrodes (51, 52), and shock waves are formed between the positive electrode 3 and the conducting space 21 corresponding to the intermediate electrode 51 adjacent to the positive electrode, between the conducting spaces 21 corresponding to the two intermediate electrodes (51, 52) adjacent to the positive electrode, and between the negative electrode 4 and the conducting space 21 corresponding to the intermediate electrode 52 adjacent to the negative electrode.
Example four
This embodiment is substantially the same as the second embodiment, except that:
in the present embodiment, referring to fig. 7, the annular member 2 is an insulating sheath, only one positive electrode 3 and only one negative electrode 4 are provided, three intermediate electrodes are provided, the positive electrode 3, the negative electrode 4 and the three intermediate electrodes (51, 52 and 53) are spaced apart by 72 degrees in the circumferential direction, and the conduit 1 is a circular tube.
The annular component 2 is provided with a conducting space 21 corresponding to the exposed surface of the positive electrode 3 and the exposed surface of the negative electrode 4, the annular component 2 is provided with two conducting spaces 21 corresponding to the exposed surfaces of the intermediate electrodes (51, 52, 53), and shock waves are formed between the positive electrode 3 and the conducting space 21 corresponding to the intermediate electrode 51 adjacent to the positive electrode, between the conducting spaces 21 corresponding to the adjacent intermediate electrodes (51, 52), between the conducting spaces 21 corresponding to the adjacent intermediate electrodes (52, 53), and between the negative electrode 4 and the conducting space 21 corresponding to the intermediate electrode 53 adjacent to the negative electrode.
EXAMPLE five
This embodiment is substantially the same as the first embodiment, except that:
in the present embodiment, referring to fig. 8, the annular member 2 is an insulating sheath, only one positive electrode 3 and only one negative electrode 4 are provided, four intermediate electrodes are provided, the positive electrode 3, the negative electrode 4, and the four intermediate electrodes (51, 52, 53, 54) are separated by 60 degrees in the circumferential direction, and the catheter 1 is a circular tube.
The annular component 2 is provided with two conducting spaces 21 corresponding to the exposed surfaces of the positive electrode 3 and the negative electrode 4 respectively, the annular component 2 is provided with two conducting spaces 21 corresponding to the exposed surfaces of the intermediate electrodes (51, 52, 53, 54), and shock waves are formed between the positive electrode 3 and the conducting space 21 corresponding to the intermediate electrode 51 adjacent to the positive electrode, between the conducting spaces 21 corresponding to the adjacent intermediate electrodes (51, 52), between the conducting spaces 21 corresponding to the adjacent intermediate electrodes (52, 53), between the conducting spaces 21 corresponding to the adjacent intermediate electrodes (53, 54), and between the negative electrode 4 and the conducting space 21 corresponding to the intermediate electrode 54 adjacent to the negative electrode.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. An electrode device comprising a catheter, an electrode unit comprising a plurality of electrodes, characterized in that: the electrode device also comprises an annular member which surrounds the circumference of the catheter and is arranged outside the catheter, the plurality of electrodes are distributed along the circumference of the catheter, each electrode is respectively arranged in the annular member or between the annular member and the catheter in a penetrating way, and part of the circumferential surface is kept exposed; one or more conducting spaces are formed in the position, corresponding to the exposed surface of one electrode, of the annular component and are used for communicating the exposed surface of one electrode with the space outside the electrode device, so that when conducting liquid is filled in the conducting spaces and the electrode device is connected with electricity, shock waves are formed between the conducting spaces corresponding to the two adjacent electrodes respectively, and the annular component is an insulating piece.
2. The electrode device of claim 1, wherein: the electrode unit comprises a positive electrode and a negative electrode, the positive electrode is used for being connected with a positive electrode, the negative electrode is used for being connected with a negative electrode, aiming at a current path, a conducting space is respectively arranged on the annular component corresponding to the exposed surface of the positive electrode and the exposed surface of the negative electrode, and shock waves are formed between the conducting space corresponding to the positive electrode and the conducting space corresponding to the negative electrode.
3. The electrode device of claim 1, wherein: the electrode unit comprises a positive electrode used for being connected with a positive electrode, a negative electrode used for being connected with a negative electrode and an intermediate electrode, the positive electrode and the negative electrode are arranged adjacently, aiming at a current path, a conduction space is respectively arranged on the annular component corresponding to the exposed surface of the positive electrode and the exposed surface of the negative electrode, two conduction spaces are respectively arranged on the annular component corresponding to the exposed surface of the intermediate electrode, and shock waves are formed between the conduction spaces corresponding to the positive electrode and the intermediate electrode and between the conduction spaces corresponding to the intermediate electrode and the negative electrode.
4. The electrode device of claim 1, wherein: the electrode unit comprises a positive electrode used for being connected with a positive electrode, a negative electrode used for being connected with a negative electrode and a plurality of intermediate electrodes, the positive electrode and the negative electrode are arranged adjacently, aiming at a current path, a conduction space is respectively arranged on the annular component corresponding to the exposed surface of the positive electrode and the exposed surface of the negative electrode, two conduction spaces are respectively arranged on the annular component corresponding to the exposed surface of the intermediate electrode, and shock waves are formed between the conduction spaces corresponding to the positive electrode and the adjacent intermediate electrode, between the conduction spaces corresponding to the adjacent intermediate electrodes and between the negative electrode and the conduction spaces corresponding to the adjacent intermediate electrodes.
5. The electrode device according to claim 3 or 4, wherein: when the electrode device works, the current sequentially passes through the positive electrode, one or more intermediate electrodes and the negative electrode to form a current path.
6. The electrode device of claim 1, wherein: the annular component comprises an insulating sleeve, the insulating sleeve is provided with a connecting hole which is positioned in the middle and used for sleeving the guide pipe, a plurality of through holes which extend along the length direction of the insulating sleeve are further arranged on the insulating sleeve, the through holes are distributed around the connecting hole, the electrodes correspondingly penetrate the through holes respectively, at least one side of the insulating sleeve positioned in the through holes is provided with a slot with an outward opening, the slot is communicated with the through holes, at least part of the surface of the electrode positioned in the through holes is exposed, and the inner space of the slot forms the conduction space.
7. The electrode device of claim 6, wherein: the insulating sleeve comprises a sleeve body made of a non-conductive material; or the insulating sleeve comprises a sleeve body made of a conductive material or a non-conductive material and an insulating coating arranged on the surface of the sleeve body.
8. The electrode device of claim 1, wherein: the annular member comprises an annular sleeve body and a filler, the sleeve body is sleeved outside the catheter, the filler is filled between the sleeve body and the catheter, the same part of the sleeve body and the filler is provided with a groove with an outward opening, at least part of the surface of the electrode is exposed at the opening, and the inner space of the groove forms the conduction space.
9. The electrode device of claim 1, wherein: the annular member is provided with one or more, and when the annular member is provided in plurality, a plurality of the annular members are distributed along the axial direction of the conduit.
10. A shock wave generation system comprises an electrode device and a balloon, and is characterized in that: the electrode assembly of any one of claims 1-9, wherein the annular member is positioned within the balloon.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113633346A (en) * | 2021-08-31 | 2021-11-12 | 苏州中荟医疗科技有限公司 | Electrode device and shock wave generation system |
| CN116557147A (en) * | 2023-07-10 | 2023-08-08 | 中国人民解放军空军工程大学 | Plasma detonation device, rotary detonation engine and detonation method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113633346A (en) * | 2021-08-31 | 2021-11-12 | 苏州中荟医疗科技有限公司 | Electrode device and shock wave generation system |
| CN113633346B (en) * | 2021-08-31 | 2024-05-03 | 苏州中荟医疗科技有限公司 | Electrode device and shock wave generation system |
| CN116557147A (en) * | 2023-07-10 | 2023-08-08 | 中国人民解放军空军工程大学 | Plasma detonation device, rotary detonation engine and detonation method |
| CN116557147B (en) * | 2023-07-10 | 2023-09-12 | 中国人民解放军空军工程大学 | Plasma detonation device, rotary detonation engine and detonation method |
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