Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
The invention provides an electrode assembly, referring to fig. 1 to 19, which comprises an electrode tip 110, wherein the electrode tip 110 comprises a protective sheath 113, an electrode 111 and a filling piece 116, the electrode 111 is arranged in the protective sheath 113, and the filling piece 116 is arranged in the protective sheath 113 so as to press the electrode 111 in the protective sheath 113 towards tissue to be ablated through the filling piece 116.
In the electrode assembly, the electrode assembly comprises an electrode end 110, the electrode end 110 comprises a protective sheath 113, an electrode 111 and a filling piece 116, the electrode 111 is arranged in the protective sheath 113, the filling piece 116 is used for extruding the electrode 111 to enable the electrode 111 to move towards a tissue to be ablated, the electrode 111 can be attached to the inner wall of the protective sheath 113, the outer wall of the protective sheath 113 at the corresponding position is attached to the corresponding tissue to be ablated, therefore, the electrode 111 can better act on the corresponding tissue to be ablated, the ablation effect is guaranteed, and the problem that the medical intervention type ablation device in the prior art is not ideal in ablation effect can be solved by using the electrode assembly.
Specifically, the plurality of electrodes 111 are arranged in a strip shape, the plurality of electrodes 111 are arranged at intervals along the extending direction of the protective sheath 113, namely, the plurality of electrodes 111 simultaneously act on corresponding tissues to be ablated to form a complete ablation line, thereby ensuring the ablation effect and improving the ablation efficiency, and the plurality of electrodes 111 are arranged at intervals, so that the mutual influence between two adjacent electrodes 111 can be avoided.
Optionally, the protective sheath 113 is tubular, and a plurality of electrodes 111 are disposed within the lumen of the protective sheath 113.
In the present embodiment, the number of the electrodes 111 is 5 to 10.
In this embodiment, the filling member 116 is disposed in such a manner that, as shown in fig. 2, the filling member 116 is in a strip shape, the protection sheath 113 is in a strip shape, and the filling member 116 extends along the extending direction of the protection sheath 113. Specifically, the filler 116 is a balloon structure so as to form a pressing action on the plurality of electrodes 111 when the balloon structure is inflated.
In the embodiment, the filling members 116 are arranged in another mode that the filling members 116 are multiple, the filling members 116 are arranged at intervals along the extending direction of the protective sheath 113, the filling members 116 and the electrodes 111 are arranged in a one-to-one correspondence mode, so that each filling member 116 can form a squeezing action on the corresponding electrode 111, each filling member 116 is arranged on one side, away from tissue to be ablated, of the corresponding electrode 111, and when the filling members 116 form the squeezing action on the corresponding electrode 111, each electrode 111 moves towards the direction close to the corresponding tissue to be ablated. Specifically, each filler element 116 is a balloon structure that, when inflated, creates a compressive effect on the corresponding electrode 111.
In some embodiments, the energizing circuits of the plurality of electrodes 111 are independently provided to individually control each electrode 111.
In some embodiments, the energizing circuits of two adjacent first electrodes are independently arranged to form an ablation electrode pair to perform an ablation function.
In some embodiments, the vent lines of the plurality of fillers 116 are independently provided to individually control the inflation status of each filler 116.
Specifically, the protecting sheath 113 is provided with an open pore structure for avoiding the electrode 111, so that a part of the electrode 111 extends out of the cavity of the protecting sheath 113 through the open pore structure, and thus the part of the electrode structure extending out of the cavity of the protecting sheath 113 can be in direct contact with corresponding tissue to be ablated, and further the part of the electrode structure acts on the corresponding tissue to be ablated better, so that the ablation effect is further ensured, and the ablation efficiency is improved.
In this embodiment, one arrangement form of the open pore structure is that when the number of the electrodes 111 is plural, the open pore structure includes plural avoiding openings, and the plural avoiding openings are arranged in one-to-one correspondence with the plural electrodes 111, so that a part of the structure of each electrode 111 extends out of the protective sheath 113 through the corresponding avoiding opening, and further, the part of the structure of each electrode 111 extending out of the protective sheath 113 can be in direct contact with the corresponding tissue to be ablated.
In this embodiment, the open-cell structure is another arrangement in which the open-cell structure is a strip-shaped opening, the strip-shaped openings being spaced apart along the extending direction of the protective sheath 113, and a part of the structure of the plurality of electrodes 111 protruding to the outside of the protective sheath 113 through the strip-shaped opening.
The invention also provides an ablation device, which comprises a first electrode assembly 100 and a second electrode assembly 200, wherein the first electrode assembly 100 is the electrode assembly, the electrode of the first electrode assembly 100 is a first electrode, namely, the first electrode end of the first electrode assembly 100 is an electrode end 110, the first electrode is an electrode 111, the second electrode assembly 200 comprises a second electrode end 210, the second electrode end 210 comprises a second electrode 211, and the second electrode 211 is opposite to the first electrode so as to ablate tissue to be ablated, which is positioned between the first electrode and the second electrode 211, through the first electrode and the second electrode 211.
Specifically, the ablation device further includes an ablation circuit 320, the first electrode and the second electrode 211 being disposed on the ablation circuit 320 to ablate by adjusting the radio frequency energy between the first electrode and the second electrode 211 by testing the impedance between the first electrode and the corresponding second electrode 211.
In some embodiments, the first electrode tip 110 of the first electrode assembly 100 includes a first magnetic member 112 and the second electrode tip 210 includes a second magnetic member 212, the first magnetic member 112 and the second magnetic member 212 cooperating to fix the first electrode tip 110 and the second electrode tip 210 relative to each other.
In some embodiments, the first magnetic element 112 and the second magnetic element 212 are each a plurality, the first electrode tip 110 and the second electrode tip 210 are each a strip, the plurality of first magnetic elements 112 are spaced apart along the extending direction of the first electrode tip 110, and the plurality of second magnetic elements 212 are spaced apart along the extending direction of the second electrode tip 210.
In some embodiments, the first electrodes and the second electrodes 211 are multiple, the first magnetic elements 112 are staggered from the first electrodes, and the second magnetic elements 212 are staggered from the second electrodes 211.
In some embodiments, the adjacent first electrode is disposed in isolation from the first magnetic member 112, and the adjacent second electrode 211 is disposed in isolation from the second magnetic member 212.
In some embodiments, the opposing surfaces between adjacent first electrodes and first magnetic members 112 are each sprayed with an insulating varnish, or an insulating spacer is disposed between adjacent first electrodes and first magnetic members 112, and the opposing surfaces between adjacent second electrodes 211 and second magnetic members 212 are each sprayed with an insulating varnish, or an insulating spacer is disposed between adjacent second electrodes 211 and second magnetic members 212. The insulating partition plate and the protective sheath are designed integrally or are fixed in a split mode.
In some embodiments, the outer surfaces of the first magnetic element 112 and the second magnetic element 212 are coated with an insulating layer.
In some embodiments, the first electrode, the first magnetic member 112, the second electrode 211, and the second magnetic member 212 are all connected to separate energizing circuits for individual control.
In some embodiments, the plurality of first electrodes and the two first electrodes are independently provided with power-on circuits to form a mapping electrode pair to detect the electric signal transmission condition of the ablated tissue 340 to be ablated by using the power-on circuits, and/or the plurality of second electrodes 211 and the two second electrodes 211 are independently provided with power-on circuits to form a mapping electrode pair to detect the electric signal transmission condition of the ablated tissue 340 to be ablated by using the power-on circuits, and/or the first electrodes and the second electrodes 211 are independently provided with power-on circuits to form a mapping electrode pair to detect the electric signal transmission condition of the ablated tissue 340 to be ablated by using the power-on circuits. In the mapping process, the polarities of the two first electrodes forming the mapping electrode pair are different, the voltage is set to form current, so that mapping is realized, the polarities of the two second electrodes 211 forming the mapping electrode pair are different, the voltage is set to form current, so that mapping is realized, the polarities of the first electrodes and the second electrodes 211 forming the mapping electrode pair are different, the voltage is set to form current, and mapping is realized.
In particular use, the first electrode assembly 100 and the second electrode assembly 200 are used as epicardial electrodes and endocardial electrodes, respectively, such that the first electrode assembly 100 and the second electrode assembly 200 act on the epicardium and endocardium, respectively, to achieve simultaneous ablation of the epicardium and endocardium, thereby achieving a good ablation effect. In addition, the ablation device can realize hybrid ablation of the inner part and the outer part, has small technical trauma, solves the difficult problems of large surgical ablation trauma and slow recovery in the prior art, can synchronously ablate the epicardium and the endocardium in a combined way, adjusts the output power by testing the actual impedance between tissues, is accurate and safe, and can completely ablate after the impedance reaches a certain resistance value by machine alarm, thereby avoiding excessive ablation.
In addition, through making the relative setting of first electrode and second electrode 211, can test the impedance between first electrode and the second electrode 211 in real time, and adjust the radiofrequency energy between first electrode and the second electrode 211 according to the impedance between the first electrode and the second electrode 211 of real-time detection and carry out the ablation, and the impedance reaches the machine warning and ablates after certain resistance, avoid excessive ablation, it is limited in order to solve the unilateral ablation degree of depth of interventional ablation, be difficult to guarantee the tissue from inside to outside and dehydrate completely, the problem of denaturation, the difficult problem of controlling of radiofrequency power has been solved simultaneously, the power is less can cause the ablation not thoroughly, the power is too big can cause the ablation excessively, the tissue necrosis even burns out, burn-out phenomenon.
In the specific ablation process, the impedance of the tissue to be ablated between the electrodes is changed from low to high, in the first stage of ablation, the impedance of the tissue to be ablated between the electrodes is gradually increased, the radio frequency power is kept unchanged to accelerate vibration of molecules in cells, in the second stage of ablation, the radio frequency power is gradually increased along with the increase of the impedance of the tissue to be ablated between the electrodes, when the impedance of the tissue to be ablated between the electrodes is increased to a first preset value, the radio frequency power is also increased to a preset maximum value, in the ablation stage, cells are rapidly dehydrated to generate irreversible change, in the third stage of ablation, along with the continuous increase of the impedance of the tissue to be ablated between the electrodes, the radio frequency power is gradually reduced to ensure the thoroughly ablation and simultaneously prevent the phenomenon of scabbing or damaging a patient on the surface of the tissue due to high power output of the radio frequency, and the end of ablation is prompted until the impedance of the tissue to be ablated between the electrodes is increased to a second preset value.
Preferably, as shown in fig. 3 and 8, the first electrodes and the second electrodes 211 are plural, the plural first electrodes and the plural second electrodes 211 are arranged in a one-to-one correspondence, and the plural first electrodes and the plural second electrodes 211 are arranged so that the plural first electrodes and the plural second electrodes 211 can act on the corresponding tissues at the same time, thereby enhancing the ablation effect and improving the ablation efficiency. Specifically, the first electrode tip and the second electrode tip 210 are both in a strip shape, the plurality of first electrodes are arranged at intervals along the extending direction of the first electrode tip, the plurality of second electrodes 211 are arranged at intervals along the extending direction of the second electrode tip 210, and the respective first electrodes are arranged in pairs with the corresponding second electrodes 211, that is, the plurality of first electrodes and the plurality of second electrodes 211 act on the corresponding tissues at the same time to form a complete ablation line, so that the ablation effect is ensured, and the plurality of first electrodes are arranged at intervals, and the plurality of second electrodes 211 are arranged at intervals, so that the mutual influence between two adjacent first electrodes and between two adjacent second electrodes 211 can be avoided.
In this embodiment, the first electrode tip further includes a first magnetic element 112, the second electrode tip 210 includes a second magnetic element 212, and the first magnetic element 112 and the second magnetic element 212 cooperate to fix the first electrode tip and the second electrode tip 210 relatively, so that the first electrode of the first electrode tip can be disposed opposite to the corresponding second electrode 211 of the second electrode tip 210.
Specifically, the first magnetic elements 112 and the second magnetic elements 212 are multiple, the multiple first magnetic elements 112 are arranged at intervals along the extending direction of the first electrode tip, and the multiple second magnetic elements 212 are arranged at intervals along the extending direction of the second electrode tip 210, so as to ensure the overall fixing effect between the first electrode tip and the second electrode tip 210.
Specifically, each pair of the first magnetic element 112 and the second magnetic element 212 work independently, i.e. the number of magnetic elements can be determined according to the actual requirement.
Optionally, the magnetic force of the magnetic part is controllable and adjustable, smaller magnetic force is used during initial positioning, larger magnetic force is used during final positioning, so that the inner electrode assembly and the outer electrode assembly are flexible during initial positioning and firm after final positioning, the bonding degree of the electrodes is ensured, and the ablation effect is further ensured.
Optionally, a plurality of first magnetic elements 112 are each disposed within a lumen of the protective sheath 113.
Optionally, the first magnetic member 112 is an electromagnet and/or the second magnetic member 212 is an electromagnet.
Specifically, the plurality of first magnetic members 112 are disposed in the protective sheath 113, and the plurality of first magnetic members 112 are disposed at intervals along the extending direction of the protective sheath 113. Preferably, the plurality of first magnetic members 112 are staggered with the plurality of first electrodes along the extending direction of the protective sheath 113 such that the plurality of first electrodes are spaced apart, i.e., the respective two first electrodes are spaced apart using each of the first magnetic members 112. In operation, each pair of the first magnetic element 112 and the second magnetic element 212 can work independently, i.e. the number of magnetic elements can be determined according to the actual requirement. The magnetic force of the magnetic part is controllable and adjustable, smaller magnetic force is used during initial positioning, larger magnetic force is used during final positioning, so that the inner electrode assembly and the outer electrode assembly are flexible during initial positioning and firm after final positioning, the bonding degree of the electrodes is guaranteed, and the ablation effect is further guaranteed.
In this embodiment, the opposite sides of the protective sheath 113 are provided with shielding side eaves 115, so as to form shielding protection for the first electrodes and the first magnetic members 112 inside the protective sheath 113, so as to avoid the influence on the adhesion degree between the protective sheath 113 and the epicardium caused by the entering of blood and the like of the center membranous tissue between the protective sheath 113 and the epicardium in the ablation process, and avoid the measurement precision of the resistance value between the first electrodes and the second electrodes during the ablation, thereby influencing the ablation effect. In addition, by arranging the shielding side eave 115, the liquid such as tissue liquid and physiological saline outside the ablation line can be shielded from entering the ablation part, so that the measurement accuracy of the resistance value between the first electrode and the second electrode during ablation is avoided, and the ablation effect is influenced.
In this embodiment, the shielding side eaves 115 are arranged in such a manner that, as shown in fig. 3, the shielding side eaves 115 are in a bar shape, and the shielding side eaves 115 extend along the extending direction of the protective sheath 113.
In this embodiment, as shown in fig. 4, the shielding side eaves 115 are arranged in another way, that is, the shielding side eaves 115 are plural, and the plural shielding side eaves 115 are arranged along the extending direction of the protective sheath 113 and spliced in sequence.
Specifically, as shown in fig. 5, the electrode 111 and/or the first magnetic member 112 is provided with a wire laying groove 120 for accommodating a wire 118, the wire 118 being used for connection with the electrode 111, or the wire laying groove 120 for laying the wire 118 is provided on the inner wall of the protective sheath 113.
In this embodiment, as shown in fig. 8 and 9, the second electrode tip 210 includes a second protective sheath 214, the second electrode 211 is disposed on the second protective sheath 214, wherein the second electrode tip 210 includes a developing member 213, the developing member 213 is disposed on the second protective sheath 214 to mark the position of the second electrode tip 210 by the developing member 213, and/or the second electrode 211 is made of a metal developing material including at least one of platinum, platinum alloy, tantalum, gold plated beryllium bronze, and/or the second protective sheath 214 is made of a developing material, the developing material being made of barium sulfate (BaSO 4).
The first electrode assembly 100 includes a plurality of first electrode taps 110, and the second electrode assembly 200 includes a plurality of second electrode taps 210.
Referring to fig. 12 to 15, the ablation device in this embodiment can be seen to ablate the tissue 340 to be ablated, and can embody the ablation scope 330 of the ablation device.
Specifically, the plurality of second magnetic elements 212 and the plurality of second electrodes 211 are respectively sleeved on the second protective sheath 214, and optionally, the plurality of second magnetic elements 212 and the plurality of second electrodes 211 are staggered along the extending direction of the second protective sheath, so that the plurality of second electrodes 211 are arranged at intervals, namely, each second magnetic element 212 is used for separating two corresponding second electrodes 211.
Alternatively, referring to fig. 13 and 19, the plurality of second magnetic members 212 and the plurality of second electrodes 211 are each in a ring structure, or in a polygonal, V-shaped, D-shaped, arched or other cross-sectional structure. As shown in fig. 19, the second electrode 211 may have a polygonal cross section, and may be a square. The developing member 213, the second electrode 211 having a developing action, and the second protective sheath 214 having a developing action in the present embodiment can indicate the position when the second electrode assembly 200 enters the ablation site. Alternatively, the number of developing members 213 on the second electrode tip 210 is 3 to 6, and may be provided separately or the second electrode 211 may be provided with a developing function. The outer sheath walls of the developing member 213 and the second protective sheath 214 in this embodiment are flush to prevent damage to the patient during surgery.
In this embodiment, there may be no developing member 213, a plurality of developing members 213 may be provided, and a plurality of developing members 213 may be disposed at intervals along the extending direction of the second protective sheath 214, and/or the outer surface of the second protective sheath 214 may be divided into a portion corresponding to the developing member 213 to form a first surface portion and a second surface portion connected to the first surface portion, the first surface portion being a concave structure, the developing member 213 being fitted over the first surface portion, the outer surface of the developing member 213 being flush with or lower than the second surface portion.
In operation, the first electrode assembly 100 is first fixed on the epicardium by the positioning member, then the second electrode assembly 200 is introduced into the heart, the second electrode assembly 200 is placed on the endocardium at the corresponding position of the first electrode assembly 100 by the indication of the developing member 213, and then the first pair of magnetic members, the second pair of magnetic members and the third pair of magnetic members positioned at the first electrode tip 110 and the second electrode tip 210 are synchronously and sequentially opened, at this time, the two sets of electrodes complete the initial positioning. And then the two electrode assemblies after the initial positioning are completed, the rest magnetic parts are opened in pairs, and the final positioning is completed.
Specifically, the first electrode and the second electrode 211 are relatively independent of each other when they operate, i.e., the number of working electrodes can be controlled.
In this embodiment, as shown in fig. 6, the first electrode has an electrode surface 1110 disposed toward the tissue to be ablated, and the protective sheath 113 has a protective sheath surface 1130 disposed toward the tissue to be ablated, wherein the electrode surface 1110 is located on a side of the protective sheath surface 1130 that is adjacent to the tissue to be ablated.
In this embodiment, the number of the first electrodes is plural, the plural first electrodes are arranged at intervals along the extending direction of the first electrode tip 110, and the minimum distances between the electrode faces 1110 of the plural first electrodes and the protective sheath face 1130 are the same. The minimum distance between the electrode surface 1110 of the first electrode and the protective sheath surface 1130 is in the range of 0-0.5mm, and the existence of the height difference can enable the first electrode to be fully contacted with the surface to be ablated, so that the ablation effect is ensured. The height difference between the electrode surface 1110 of the first electrode and the protective sheath surface 1130 is preferably 0.2mm.
In this embodiment, both electrode face 1110 and protective sheath face 1130 are planar.
In order to realize cooling of the first electrode tip 110, as shown in fig. 6, a plurality of first electrodes are arranged at intervals along the extending direction of the first electrode tip 110, at least one of the plurality of first electrodes is provided with a cooling hole 1112 for circulating a cooling fluid, and/or a cooling pipeline for circulating the cooling fluid is arranged in the protective sheath 113. In this embodiment, the cooling holes 1112 are used for local cooling in the ablation process, so as to protect other parts except the ablation part from being damaged. By providing cooling channels, cooling can be performed at the electrode sides.
In this embodiment, 1 to 4 cooling holes 1112 are provided on at least one of the plurality of first electrodes. The number of the cooling holes on each first electrode is 0-4 so as to ensure the control of the temperature in the ablation process.
The invention also provides a radio frequency ablation device, as shown in fig. 11, which comprises a radio frequency host 310 and the ablation device, wherein the ablation device is connected with the radio frequency host 310.
Specifically, as shown in fig. 10, a display screen 313 is disposed on the rf host 310, and the display screen 313 is used to display the measured impedance and/or rf power of the ablated tissue between the two corresponding first electrodes and the second electrodes 211.
Specifically, the rf host 310 is further provided with an ablation interface 311, where the first electrode assembly 100 and the second electrode assembly 200 each include a plurality of lead assemblies, each lead assembly includes a lead connector and a plurality of leads connected to the lead connector and disposed in parallel, each lead is configured to be connected to a corresponding electrode, the ablation interface 311 has a first ablation interface portion and a second ablation interface portion, the first ablation interface portion has a plurality of first ablation interfaces for inserting the plurality of lead connectors of the first electrode assembly 100, and the second ablation interface portion has a plurality of second ablation interfaces for inserting the plurality of lead connectors of the second electrode assembly 200, so as to provide appropriate rf power to the corresponding first electrode and the corresponding second electrode 211 through each first ablation interface and each second ablation interface.
Specifically, when the first magnetic element 112 and the second magnetic element 212 are electromagnets, the rf host 310 is further provided with an electromagnetic interface 312, each of the first electrode assembly 100 and the second electrode assembly 200 includes a plurality of electromagnet assemblies, each electromagnet assembly includes an electromagnetic connector and a plurality of electromagnetic wires connected with the electromagnetic connector and disposed in parallel, each electromagnetic wire is used for being connected with a corresponding electromagnet, the electromagnetic interface 312 has a first electromagnetic interface portion and a second electromagnetic interface portion, the first electromagnetic interface portion has a plurality of first magnetic interfaces for inserting the plurality of electromagnetic connectors of the first electrode assembly 100, and the second electromagnetic interface portion has a plurality of second magnetic interfaces for inserting the plurality of electromagnetic connectors of the second electrode assembly 200, so as to supply power to the corresponding first magnetic element 112 and the corresponding second magnetic element 212 through each first magnetic interface and each second magnetic interface, and further generate an attraction force between the corresponding first magnetic element 112 and the corresponding second magnetic element 212.
From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:
In the electrode assembly, the electrode assembly comprises an electrode end 110, the electrode end 110 comprises a protective sheath 113, an electrode 111 and a filling piece 116, the electrode 111 is arranged in the protective sheath 113, the filling piece 116 is used for extruding the electrode 111 to enable the electrode 111 to move towards a tissue to be ablated, the electrode 111 can be attached to the inner wall of the protective sheath 113, the outer wall of the protective sheath 113 at the corresponding position is attached to the corresponding tissue to be ablated, therefore, the electrode 111 can better act on the corresponding tissue to be ablated, the ablation effect is guaranteed, and the problem that the medical intervention type ablation device in the prior art is not ideal in ablation effect can be solved by using the electrode assembly.
By applying the technical scheme of the invention, the ablation device comprises a first electrode assembly with a first electrode tip and a second electrode assembly with a second electrode tip. The first electrode assembly and the second electrode assembly can be used independently, the first electrode tip comprises a first protective sheath and a plurality of first electrodes arranged on the first protective sheath, the first protective sheath is in a strip shape, the plurality of first electrodes are arranged at intervals along the extending direction of the first protective sheath, namely, the plurality of first electrodes act on epicardial tissues simultaneously to form a complete ablation line, and when the protective sheath is made of flexible materials, the problems that the angle is limited and the operation is inconvenient when the existing surgical instrument is used can be solved.
The first electrode and the second electrode of the ablation device are arranged opposite to each other so as to ablate tissue to be ablated which is positioned between the first electrode and the second electrode through the first electrode and the second electrode. When the ablation device is specifically used, the first electrode assembly and the second electrode assembly are respectively used as an epicardial electrode and an endocardial electrode, so that the first electrode assembly and the second electrode assembly respectively act on the epicardium and the endocardium to realize simultaneous ablation of the epicardium and the endocardium, thereby realizing good ablation effect, solving the problems that the ablation energy is constant in medical intervention, the output power cannot be adjusted timely according to the ablation effect, the overburden or the wall-impermeable problem and the cardiac surgery are dynamic ablation, but the surgical ablation wounds are larger, and the postoperative recovery is slow, realizing good ablation effect and improving the ablation efficiency, and solving the problem that the ablation effect of the ablation device in the prior art is not ideal.
The ablation device of the invention includes the electrode assembly described above, and therefore the ablation device has at least the same technical effects as the electrode assembly.
The radio frequency ablation device of the invention comprises the ablation apparatus described above, and therefore has at least the same technical effects as the ablation apparatus.
Spatially relative terms, such as "above," "upper" and "upper surface," "above" and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the process is carried out, the exemplary term "above" may be included. Upper and lower. Two orientations below. The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be capable of being practiced otherwise than as specifically illustrated and described. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.