CN115349946B - Electrode assembly for treating basis cranii tumor, surgical internal cutter and surgical system - Google Patents
Electrode assembly for treating basis cranii tumor, surgical internal cutter and surgical system Download PDFInfo
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- CN115349946B CN115349946B CN202211276400.6A CN202211276400A CN115349946B CN 115349946 B CN115349946 B CN 115349946B CN 202211276400 A CN202211276400 A CN 202211276400A CN 115349946 B CN115349946 B CN 115349946B
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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
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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
- A61B18/042—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating using additional gas becoming plasma
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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
- A61B2018/00321—Head or parts thereof
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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
- A61B2018/00571—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
- A61B2018/00571—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
- A61B2018/00583—Coblation, i.e. ablation using a cold plasma
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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
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00589—Coagulation
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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
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00607—Coagulation and cutting with the same instrument
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2218/00—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2218/001—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body having means for irrigation and/or aspiration of substances to and/or from the surgical site
- A61B2218/002—Irrigation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2218/00—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2218/001—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body having means for irrigation and/or aspiration of substances to and/or from the surgical site
- A61B2218/007—Aspiration
Abstract
The invention relates to the technical field of medical instruments, in particular to an electrode assembly, an internal surgical knife and a surgical system for treating cranium base tumor. Electrode subassembly includes the electrode pole, is equipped with insulating base and the working pole, the return circuit pole of keeping apart through insulating base on the electrode pole: the insulating base is provided with a convex edge used for enclosing the working electrode, and the highest point of the working electrode is lower than the lowest point of the convex edge or the highest point of the working electrode is flush with the lowest point of the convex edge; the electrode rod is of a hollow tubular structure, the loop electrode is arranged in the electrode rod, and an attraction channel for attracting target tissues to the working electrode for cutting and ablation is arranged in the electrode rod; the insulating base is provided with an inward sunken depressed part, and the working electrode is arranged on the depressed part. The electric current can be prevented from overflowing in the operation, so that unnecessary damage is avoided, the trouble of frequently changing the knife in the operation is solved, the skull base tumor can be cut off by using one knife, the hemostatic knife can be used for hemostasis, the time is saved, and the operation is simplified.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an electrode assembly, an internal surgical knife and a surgical system for treating craniofacial tumor.
Background
Basis cranii tumors are tumors originating from the basis cranii, above the basis cranii, the basis cranii itself and below the basis cranii, which may develop towards the head, invade the cranium, and extend towards the tail, and affect the orbit, sinus nasalis, nasal cavity, infratemporal fossa, parapharyngeal space, etc. The skull base tumor comprises pituitary tumor, meningioma, glioma and the like.
The tool bit of current treatment basis cranii tumour mainly is cold sword, in an operation, needs frequently to get different swoves and operates, and is very troublesome, consumes time, does not have ideal utensil in the aspect of stanching moreover, and is very debilitated to stanching, and its reason lies in: the focus is close to the brain, and the cranial nerve is very abundant, and other types of electrotomes or high-frequency tool bits stanch and have stimulation to the cranial nerve, easily damage the brain.
In summary, the existing knife head for treating the skull base tumor mainly has the following defects:
1. the use is inconvenient, and the operation can be completed only by frequently replacing various surgical instruments;
2. hemostasis cannot be performed in time during the operation;
3. unnecessary damage is easily caused to the brain of a patient in the operation.
Accordingly, there is a need for a surgical instrument that can address the above-mentioned problems.
Disclosure of Invention
In view of this, the present invention provides an electrode assembly, an intra-operative cutter and an operation system for treating a cranial base tumor, which can improve the safety factor of the operation, save the operation time and simplify the operation.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention firstly provides an electrode assembly for treating cranium base tumor, which comprises an electrode rod, wherein the electrode rod is provided with an insulating base, and a working electrode and a loop electrode which are isolated by the insulating base:
the insulating base is provided with a convex edge used for enclosing the working electrode, and the highest point of the working electrode is lower than the lowest point of the convex edge or the highest point of the working electrode is flush with the lowest point of the convex edge;
the electrode rod is of a hollow tubular structure, the loop electrode is arranged in the electrode rod, and an attraction channel for attracting target tissues to the working electrode for cutting and ablation is arranged in the electrode rod;
the insulation base is provided with an inward concave part, and the working electrode is arranged on the concave part;
the depressed part is of a multi-stage step structure, the sizes of all steps are gradually reduced from outside to inside, each step is respectively provided with an electrode serving as the working electrode, and the size of the electrode on each step is gradually reduced from outside to inside; or the depressed part is of a spiral stepped structure with the size gradually reduced from outside to inside, and the depressed part is provided with a spiral working electrode with the size gradually reduced from outside to inside and matched with the depressed part of the spiral stepped structure.
Further, when the depressed part is of a multi-stage step structure, the height of each step is 0.1-1mm, and the width is 0.1-1mm; when the depressed part is of a spiral step structure, the spiral angle is 0-45 degrees.
Further, the loop is a hollow tubular structure, and an inner cavity of the loop forms a part of the suction channel.
Furthermore, the insulating base is provided with a suction hole, one end of the suction hole is positioned at one side of the working electrode, and the other end of the suction hole is communicated with the suction channel.
Further, the inner diameter of the suction channel is more than or equal to 0.5mm.
Further, the device also comprises a water injection mechanism used for injecting physiological saline into the working electrode during operation.
Furthermore, the water injection mechanism comprises a water injection channel and a water outlet channel, one end of the water outlet channel is positioned at one side of the working electrode, and the other end of the water outlet channel is communicated with the water injection channel.
Further, a gap is arranged between the inner wall of the electrode rod and the outer wall of the loop electrode, the gap forms the water injection channel, and the water outlet channel is arranged on the insulating base.
Further, when the depressed part is of a multi-stage step structure, the side wall of each step is provided with the water outlet channel; when the depressed part is of a spiral step type structure, the water outlet channels are uniformly distributed on the side wall of the spiral step type.
Furthermore, a gap is arranged between the working electrode and the water outlet of the water outlet channel.
Furthermore, the diameter of the water outlet channel is 0.1-0.3mm.
Furthermore, a water outlet is arranged on the wall of the electrode rod.
Further, the device also comprises a lead used for supplying power to the working electrode.
Further, the working electrode is filamentous or flaky; when the working electrode is filamentous, the cross section of the working electrode is circular or rectangular.
The invention also provides an operation internal cutter for treating the skull base tumor, which comprises a handle, wherein the handle is provided with the electrode assembly.
The invention also provides a surgical system for treating the cranial base tumor, which comprises a plasma host, an aspirator, a water injection device and the surgical internal cutter for treating the cranial base tumor.
The invention has the beneficial effects that:
according to the operation electrode, the operation inner cutter and the operation system for treating the skull base tumor, during operation, a target tissue is attracted to the position of the working electrode through the attraction channel for cutting and ablation, the loop electrode is arranged in the electrode rod in a built-in mode, current can be prevented from overflowing during operation, unnecessary damage is avoided, the safety factor of the operation can be effectively improved, the trouble that the tool is frequently changed during operation is solved, the skull base tumor can be excised by using one cutter, hemostasis can be realized, time is saved, operation is simplified, the tumor can be continuously cut and separated by the large end of the special structure with the large and small parts retracting outside the concave part layer by layer, the cut tissue is sucked into the small end of the inner cutter and is smashed, the cut tissue is sucked away and discharged, accurate cutting of the tumor is completed, blockage can not occur, the tissue is cut and discharged at any time, the operation visual field is not influenced, and subsequent tumor excision work can be performed more smoothly.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof.
Drawings
In order to make the purpose, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:
fig. 1 is a sectional view of an electrode assembly embodiment 1 of the present invention;
FIG. 2 is a view taken along line A of FIG. 1;
FIG. 3 is a sectional view of an insulating base in embodiment 1;
FIG. 4 is a first schematic view (top and front views) of a working electrode;
FIG. 5 is a second schematic view (top and front views) of the working electrode;
FIG. 6 is a third schematic view (top and front) of the working electrode;
FIG. 7 is a first schematic view showing the installation of the insulating base according to embodiment 1;
FIG. 8 is a second schematic view showing the installation of the insulating base in embodiment 1;
fig. 9 is a cross-sectional view of embodiment 2 of the electrode assembly of the present invention;
FIG. 10 is a view from the direction B of FIG. 9;
FIG. 11 is a sectional view of an insulating base in embodiment 2;
FIG. 12 is a first schematic (top and front view) of a helical working pole;
FIG. 13 is a second schematic (top and front) view of a helical working electrode;
FIG. 14 is a first schematic view showing the installation of the insulating base according to embodiment 2;
FIG. 15 is a second schematic view showing the mounting of the insulating base according to embodiment 2;
FIG. 16 is a schematic view of an embodiment of an intra-operative cutter according to the present invention;
FIG. 17 is a schematic view of a surgical system of the present invention;
fig. 18 is a schematic view showing a current distribution when the electrode assembly of the related art is operated.
Description of reference numerals:
1-an insulating base; 2-an electrode rod; 3-a loop pole; 4-an insulating layer; 5-step; 6-a first working electrode; 7-a second working electrode; 8-a third working electrode; 9-electrode hole; 10-a wire; 11-a water injection channel; 12-a water outlet channel; 13-convex edge; 14-a suction channel; 15-suction holes; 16-a spiral working electrode; 17-a handle; 18-a suction tube; 19-a water injection pipe; 20-a plug; 21-suction tube switch; 22-water injection pipe switch; 23-plasma host; 24-foot switch.
Detailed Description
The present invention is further described below in conjunction with the drawings and the embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
EXAMPLE 1 electrode Assembly
As shown in fig. 1, the electrode assembly for treating cranial base tumor of the present embodiment includes an electrode rod 2, as shown in fig. 1, in the present embodiment, an insulating layer 4 is provided outside the electrode rod 2, the front end of the electrode rod 2 is exposed, a portion covered by the insulating layer 4 is used as a cutter bar, the exposed portion is used as a cutter head, since the cutter head is used in the cranium, there is a requirement for the size, in the present embodiment, the diameter of the cutter head is 3-8mm, the working length of the cutter head is 100-250mm, and the included angle between the cutter head portion and the cutter bar portion is set to 0-45 °, thereby facilitating the operation; the electrode rod 2 is provided with an insulating base 1, and a working electrode and a loop electrode 3 which are isolated by the insulating base 1;
the insulating base 1 is provided with a convex edge 13 which surrounds the working electrode therein, in the embodiment, the highest point of the working electrode is lower than the lowest point of the convex edge 13, and of course, in some embodiments, the highest point of the working electrode is flush with the lowest point of the convex edge 13;
the electrode rod 2 is of a hollow tubular structure, the loop electrode 3 is arranged in the electrode rod 2, and a suction channel 14 for sucking target tissues to the working electrode for cutting and ablation is arranged in the electrode rod 2. In this embodiment, the return electrode 3 is a hollow tubular structure, and its lumen constitutes a part of the suction passage 14. In this embodiment, the electrode rod 2 and the loop electrode 3 are coaxially disposed, and the insulating base 1 is disposed at the front end of the electrode rod 2, as shown in fig. 7 and 8, in this embodiment, the front end of the electrode rod 2 is sleeved on the insulating base 1, in this embodiment, the side wall of the electrode rod 2 completely covers the insulating base 1, and in some embodiments, the end surface of the insulating base 1 may also be exposed outside the electrode rod 2.
As shown in fig. 1, in this embodiment, the insulating base 1 is provided with a recessed portion which is recessed inwards, and the working electrode is disposed on the recessed portion, because the insulating base 1 needs to contact with a human body in an operation, in this embodiment, the wall thickness of the insulating base is greater than or equal to 0.1mm, so that the insulating base is prevented from being broken in the operation, and the operation safety is improved.
Specifically, as shown in fig. 2 and 3, in the present embodiment, the recessed portion has a multi-step structure, the steps 5 of each step decrease gradually from outside to inside, each step 5 is provided with an electrode as a working electrode, and the electrode on each step decreases gradually from outside to inside and matches the size of the corresponding step. Specifically, in this embodiment, the recessed portion has a three-stage step structure, and each of the steps 5 from outside to inside is provided with a first working electrode 6, a second working electrode 7 and a third working electrode 8, as shown in fig. 4-6, in this embodiment, the first working electrode 6, the second working electrode 7 and the third working electrode 8 are all in a ring shape, and the diameters of the first working electrode 6, the second working electrode 7 and the third working electrode 8 are sequentially reduced, and in this embodiment, the first working electrode 6, the second working electrode 7 and the third working electrode 8 may be wire electrodes or sheet electrodes, and when the working electrodes are wire electrodes, the cross section of the working electrodes is circular or rectangular, the thickness of the working electrodes is between 0.1mm and 0.6mm, the height of each step 5 is between 0.1mm and 1mm, the width of each step 5 is between 0.1mm and 1mm, and the specific size of the step 5 is determined according to the size of the working electrode disposed thereon. As shown in fig. 1 and fig. 3, in the present embodiment, the electrode holes 9 for passing the working electrode are respectively disposed on the side walls of each step 5, and the working electrode is fixed through the electrode holes 9 and connected to the lead 10. In specific implementation, the number of the steps 5 may be determined according to requirements, and is two or more.
In the operation process, the suction channel 14 is connected to the suction apparatus, the suction function is started, under the action of negative pressure, the target tissue can be sucked through the suction channel 14, so that the target tissue reaches the position of the working electrode for cutting and ablation, the current range is only limited in a small range of the electrode head part because the loop electrode 3 is arranged in the electrode rod 2, and the current overflow can be avoided in the operation (refer to fig. 18, which is a current distribution schematic diagram of the electrode assembly in the prior art during operation), so that unnecessary damage is avoided, and the safety factor of the operation can be effectively improved. The basis cranii tumour operation needs to be performed as accurately as possible, and if the conventional arrangement mode of the loop pole is adopted, the current diffusion range is large (refer to fig. 18), and the mode is not suitable for the basis cranii tumour operation. The invention solves the trouble of frequently changing the knife when in operation, can use one knife to excise the skull base tumor, and can also be used for hemostasis, save time and simplify the operation. The tumor is continuously cut and separated by the large end of the special structure which is arranged outside the concave part and is large and the inner part is small and is retracted layer by layer, the cut tissue is sucked into the small end of the inner cutter and is smashed, so that the cut tissue is sucked away and discharged, the accurate cutting of the tumor is completed, the blockage is avoided, the tissue is cut along with the discharge, the operation visual field is not influenced, and the subsequent tumor excision work of the operation can be smoothly carried out.
The electrode assembly of the present embodiment further includes a water injection mechanism for injecting physiological saline to the working electrode at the time of operation. The water injection mechanism will be specifically described below.
As shown in fig. 1 and fig. 3, in the present embodiment, the water injection mechanism includes a water injection channel 11 and a water outlet channel 12, one end of the water outlet channel 12 is located at one side of the working electrode, and the other end is communicated with the water injection channel 11. In this embodiment, a gap is formed between the inner wall of the electrode rod 2 and the outer wall of the loop electrode 3, the gap forms a water injection channel 11, the recessed portion adopts a multi-stage step structure, and the side wall of the three-stage step 5 is respectively provided with a water outlet channel 12. In addition, in this embodiment, a water outlet may be further formed in the wall of the electrode rod 2, and a water injection effect may also be provided to the working portion of the working electrode. The two water injection modes can be one of the two modes or applied simultaneously. In this embodiment, a gap is formed between the working electrode and the water outlet end of the water outlet channel 12, so as to prevent the working electrode from blocking the water outlet end of the water outlet channel 12, and thus the water injection can be smoother. In this embodiment, the diameter of the water outlet channel 12 is 0.1-0.3mm, which can meet the flow demand of injecting physiological saline, so that the working electrode can work normally in the environment with enough physiological saline.
As shown in fig. 1 and 2, the insulating base 1 of the present embodiment is fitted to the front end of the circuit pole 3 through the suction hole 15. The insulating base 1 can be installed and fixed. In this embodiment, the inner of the suction hole 15 and the front end of the loop electrode 3 are respectively provided with a limit step 5 for axial limit. The insulating base 1 can be prevented from moving axially.
In this embodiment, the inner diameter of the suction passage 14 is 0.5mm or more. The cut tumor can be better sucked.
As shown in fig. 7, the end face of the insulating base 1 of the present embodiment is exposed outside the electrode rod 2. Of course, as shown in fig. 8, in some embodiments, the front end of the electrode rod 2 is sleeved on the insulating base 1, and the side wall of the electrode rod 2 completely covers the insulating base 1, i.e. the end face of the insulating base 1 is flush with the end face of the electrode rod 2.
EXAMPLE 2 electrode Assembly
As shown in fig. 9 and 10, in the electrode assembly of the present embodiment, compared with the electrode assembly of embodiment 1, the recess of the present embodiment has a spiral stepped structure with gradually decreasing outer to inner dimensions, the spiral type working electrode 16 (shown in fig. 12 and 13) having gradually decreasing outer to inner dimensions and matching the recess of the spiral stepped structure is provided on the recess, and the spiral angle of the recess is 0 to 45 ° in the present embodiment.
As shown in fig. 11, water outlet channels 12 are uniformly distributed on the spiral stepped side wall of the present embodiment, and the purpose of the water outlet channels is to facilitate better water injection effect for the working electrode.
As shown in fig. 10 to fig. 15, the rest of the settings of this embodiment are the same as those of embodiment 1, and are not described again.
EXAMPLE 3 surgical endocutter
As shown in fig. 16, the surgical scalpel for treating cranial base tumor of the present embodiment includes a handle 17, and an electrode assembly as described in embodiment 1 or embodiment 2 above is provided on the handle 17.
In this embodiment, the handle 17 is provided with a suction tube 18, a water injection tube 19 and a plug 20, the suction tube 18 is provided with a suction tube switch 21, the end of the suction tube 18 is further provided with a connector for connecting with a suction device, the water injection tube 19 is provided with a water injection tube switch 22, the end of the water injection tube 19 is further provided with a connector for connecting with a water injection device, and the plug 20 is used for connecting with a plasma host.
Example 4 surgical System
As shown in fig. 17, the surgical system for treating a cranial base tumor of the present embodiment includes a plasma main body 23, an aspirator, a water injection device, and a surgical endocutter for treating a cranial base tumor as described in embodiment 2, wherein the aspirator and the water injection device are not shown in the drawings. In this embodiment, the plasma host 23 is controlled by a foot switch 24, which is convenient for a single person to operate.
The operation procedure of the surgical system for treating cranial base tumor of the embodiment is as follows:
firstly, a plug 20, an aspirator 18 and a water injection pipe 19 of an internal surgical cutter are respectively connected with a plasma host 23, an aspirator and a water injection device; under the coordination of the endoscope, the internal cutting knife enters the target position to find the tumor, and the internal cutting knife is aligned to the tumor; and starting suction and water outlet, sucking the tumor into the concave part of the insulating base 1 of the inner cutter, stepping on the pedal switch to excite the inner cutter to generate plasma, and cutting the tumor by using the plasma generated by the cutter head. Under the suction effect of aspirator, the tumour can be firmly inhaled in inside sunken depressed part, and under the outer big inner packet of inner cutter layer upon layer indentation's of inner cutter special construction, the main aspects can be with the continuous cutting separation of tumour, the tissue after the cutting is inhaled the inner cutter tip and is smashed the tissue of cutting, thereby in time the discharge is siphoned away to the tissue under the cutting, rather than staying the skull base, along with cutting along with arranging, can not influence the operation field of vision, help better excision tumour simultaneously, accomplish the accurate cutting to the tumour, and can not produce the jam, can carry out subsequent tumour excision work of performing the operation more smoothly.
It should be noted that before the internal cutting knife is used, a plasma host with specific frequency ranging from 100kHz to 5MHz is connected, the pedal and the aspirator are connected, after the internal cutting knife is correctly started, the internal cutting knife is tried in physiological saline, and whether the internal cutting knife can successfully excite plasma is checked.
When the surgical electrode, the surgical inner cutter and the surgical system are used for surgery, the target tissue is attracted to the position of the working electrode through the attraction channel for cutting and ablation, and the loop electrode is arranged in the electrode rod, so that current overflow can be avoided in the surgery, unnecessary damage is avoided, and the safety coefficient of the surgery can be effectively improved. The whole process can be completed by only one inner cutter, so that the time and labor are saved, the efficiency is high, and the cutter head has great advantages and advancement compared with the traditional cutter head; the plasma generated by the internal cutter has the functions of disinfection and sterilization, and can effectively prevent postoperative infection; because the internal cutter is in a minimally invasive operation type, a large area of holes can not be formed, the pain of a patient and the recovery time after an operation can be relieved, and the risk of infection can be effectively reduced. The big end of the special structure that the layer of little layer upon layer indents in big outside the depressed part can be with the continuous cutting separation of tumour, and the tissue after the cutting is inhaled the interior cutter tip and is smashed the tissue of cutting to the tissue of cutting is siphoned away and is discharged, accomplishes the accurate cutting to the tumour, and can not produce the jam, along with cutting along with arranging, can not influence the operation field of vision, can carry out subsequent tumour excision work of performing the operation more smoothly.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (15)
1. The utility model provides an electrode subassembly for treating basis cranii tumour, includes the electrode pole, be equipped with insulating base on the electrode pole and pass through working pole, the return circuit utmost point that insulating base kept apart, its characterized in that:
the insulation base is provided with a convex edge used for enclosing the working electrode, and the highest point of the working electrode is lower than the lowest point of the convex edge, or the highest point of the working electrode is flush with the lowest point of the convex edge;
the electrode rod is of a hollow tubular structure, the loop electrode is arranged in the electrode rod, and an attraction channel for attracting target tissues to the working electrode for cutting and ablation is arranged in the electrode rod;
the insulation base is provided with an inward concave part, and the working electrode is arranged on the concave part;
the depressed part is of a multi-stage step structure, the sizes of all steps are gradually reduced from outside to inside, each step is respectively provided with an electrode serving as the working electrode, and the size of the electrode on each step is gradually reduced from outside to inside; or the recessed part is of a spiral stepped structure with the size gradually reduced from outside to inside, and a spiral working electrode with the size gradually reduced from outside to inside and matched with the recessed part of the spiral stepped structure is arranged on the recessed part;
and the insulation base is provided with a suction hole, one end of the suction hole is positioned at one side of the working electrode, and the other end of the suction hole is communicated with the suction channel.
2. The electrode assembly for treating a cranial base tumor according to claim 1, wherein: when the depressed part is of a multi-stage step structure, the height of each step is 0.1-1mm, and the width is 0.1-1mm; when the depressed part is in a spiral step structure, the spiral angle is 0-45 degrees.
3. The electrode assembly for treating a cranial base tumor according to claim 1, wherein: the loop is of a hollow tubular structure, and an inner cavity channel of the loop forms a part of the suction channel.
4. The electrode assembly for treating a cranial base tumor according to claim 1, wherein: the inner diameter of the suction channel is more than or equal to 0.5mm.
5. The electrode assembly for treating a cranial base tumor according to claim 1, wherein: the device also comprises a water injection mechanism for injecting physiological saline into the working electrode during operation.
6. The electrode assembly for treating a cranial base tumor according to claim 5, wherein: the water injection mechanism comprises a water injection channel and a water outlet channel, one end of the water outlet channel is located on one side where the working electrode is located, and the other end of the water outlet channel is communicated with the water injection channel.
7. The electrode assembly for treating a cranial base tumor according to claim 6, wherein: a gap is formed between the inner wall of the electrode rod and the outer wall of the loop electrode, the gap forms the water injection channel, and the water outlet channel is arranged on the insulating base.
8. The electrode assembly for treating a cranial base tumor according to claim 7, wherein: when the depressed part is of a multi-stage step structure, the side wall of each stage of step is respectively provided with the water outlet channel; when the depressed part is of a spiral step type structure, the water outlet channels are uniformly distributed on the side wall of the spiral step type.
9. The electrode assembly for treating a cranial base tumor according to claim 8, wherein: and a gap is formed between the working electrode and the water outlet of the water outlet channel.
10. An electrode assembly for use in the treatment of a cranial base tumor according to any one of claims 6-9, wherein: the diameter of the water outlet channel is 0.1-0.3mm.
11. An electrode assembly for use in the treatment of a cranial base tumor according to any one of claims 6-9, wherein: and a water outlet is arranged on the wall of the electrode rod.
12. The electrode assembly for treating a cranial base tumor according to claim 1, wherein: and the lead is used for supplying power to the working electrode.
13. The electrode assembly for treating a cranial base tumor according to claim 1, wherein: the working electrode is filiform or flaky; when the working electrode is filamentous, the cross section of the working electrode is circular or rectangular.
14. An operation internal cutter for treating basis cranii tumour is characterized in that: comprising a handle on which is provided an electrode assembly according to any one of claims 1-13.
15. A surgical system for treating a cranial base tumor, comprising: comprises a plasma host machine, an aspirator, a water injection device and the surgical internal cutter used for treating the skull base tumor as claimed in claim 14.
Priority Applications (1)
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