CN120436777A - A radiofrequency coagulation ablation device - Google Patents
A radiofrequency coagulation ablation deviceInfo
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- CN120436777A CN120436777A CN202510704440.3A CN202510704440A CN120436777A CN 120436777 A CN120436777 A CN 120436777A CN 202510704440 A CN202510704440 A CN 202510704440A CN 120436777 A CN120436777 A CN 120436777A
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Abstract
本发明公开一种射频凝血消融装置，涉及医疗器械领域，包括握持结构、外管道、双极组件、工作端调节组件和射频发生装置，本发明可以同时实现组织的精准凝血、消融功能，能同时满足开腹下使用以及腹腔镜下使用，可以实现凝血点、凝血面大小的调节，可以实现在比较狭窄、比较隐蔽空间内的弯折，以到达常规凝血器不能到达的部位进行凝血，在腹腔镜下使用时，可以实现进入人体的入口更小，对人体创伤更小，同时，凝血点可以实现更大范围的调节。本发明具有对人体创伤更小，凝血点、凝血面大小可调，且凝血面更大，凝血效率更高等优点。本发明也能减少外科手术中的辅助器械使用，避免使用多种医疗器械出现的安全风险，合理利用医疗资源，减少手术费用。
The present invention discloses a radiofrequency coagulation ablation device, which relates to the field of medical devices, including a gripping structure, an external conduit, a bipolar component, a working end adjustment component and a radiofrequency generator. The present invention can simultaneously achieve precise coagulation and ablation functions of tissues, can simultaneously meet the needs of use under laparotomy and laparoscopy, can achieve adjustment of the size of coagulation points and coagulation surfaces, can achieve bending in relatively narrow and relatively hidden spaces, so as to reach parts that conventional coagulators cannot reach for coagulation, and when used under laparoscopy, can achieve a smaller entrance into the human body, less trauma to the human body, and at the same time, the coagulation point can be adjusted over a wider range. The present invention has the advantages of less trauma to the human body, adjustable size of coagulation points and coagulation surfaces, a larger coagulation surface, and higher coagulation efficiency. The present invention can also reduce the use of auxiliary instruments in surgical operations, avoid the safety risks of using multiple medical instruments, rationally utilize medical resources, and reduce surgical costs.
Description
Technical Field
The invention belongs to the field of medical instruments, relates to tissue coagulation and ablation technology under minimally invasive treatment, and particularly relates to a novel radio frequency coagulation and ablation device.
Background
Minimally invasive ablation can be applied clinically as a stand alone treatment technique, or can be combined with surgery for combined treatment. In some surgical operations, the high-frequency knife is mainly used for cutting and coagulating thicker tissues and large blood vessels, has poor coagulation effect and no accurate ablation effect, is used for operations requiring fine cutting and controlling thermal injury, and is complex and complicated in operation, the ultrasonic knife is mainly used for cutting smaller blood vessels and tissues requiring smaller damage, has weak coagulation and ablation effects, needs the assistance of other technologies for larger blood vessels and tissues, has high price, improves operation cost, has low cost of a radio-frequency coagulant, has a rapid coagulation function, is suitable for the conditions requiring high accuracy and low thermal injury, and has become the most widely applied treatment means in tumor minimally invasive ablation technology.
However, some radio frequency coagulants known by the inventor have single structure form of the working end, poor flexibility, and are only suitable for the condition of larger wounds, and are not suitable for being used under laparoscopes with higher requirements on the wounds, and the working end cannot reach narrower and more concealed parts, so that the working end is not suitable for being applied to the parts requiring accurate coagulation.
Disclosure of Invention
The invention aims to provide a novel radio frequency coagulation ablation device, the working end of which can be switched between a release state and a storage state, the ablation device can be conveniently used under a laparoscope through a tiny wound in the storage state, the working end has the characteristic of multi-angle bending after being released and stretched out, the adjustment of the coagulation point and the coagulation surface size can be realized, and the device can accurately and flexibly reach the narrower and hidden parts which cannot be reached by a conventional coagulation device, and is suitable for being applied to parts requiring accurate coagulation, so that the problems in the prior art are solved.
In order to achieve the above object, the present invention provides the following solutions:
The invention provides a radio frequency coagulation ablation device, comprising:
an outer tube, the distal end of which is used for entering human tissue, and the proximal end of which is provided with a holding structure;
The bipolar assembly comprises a first electrode and a second electrode, the first electrode and the second electrode are arranged at the far end of the outer pipeline through connecting pieces, and working ends of the first electrode and the second electrode extend out of the far end of the outer pipeline;
The working end adjusting assembly comprises a sliding adjusting block and a telescopic drive, wherein the sliding adjusting block is movably arranged in the far end of the outer pipeline, a first storage cavity and a second storage cavity which are respectively matched with the first electrode and the second electrode are arranged on the sliding adjusting block, the first electrode and the second electrode are respectively and movably assembled on the first storage cavity and the second storage cavity, and the telescopic drive is arranged on the outer pipeline and is used for driving the sliding adjusting block to slide relative to the outer pipeline so that the sliding adjusting block extends out of the far end of the outer pipeline, stores and restrains the first electrode and the second electrode, or retracts into the far end of the outer pipeline, and releases the first electrode and the second electrode;
The two poles of the radio frequency generating device are respectively and electrically connected with the electrode I and the electrode II and are used for supplying radio frequency current to the electrode I and the electrode II;
at least one of the outer tube and the connector is a plastic member to enable bending of the bipolar assembly.
In some embodiments, the connecting piece is a plastic rod, the first electrode and the second electrode are respectively connected with the inside of the outer pipeline through the plastic rod, the first electrode and the second electrode are arranged in a V shape, and working ends of the first electrode and the second electrode are respectively positioned at two ends of the V-shaped opening, so that the distance between the working ends and the exposed length of the working ends of the first electrode and the second electrode can be adjusted in the process that the sliding adjusting block slides in a telescopic manner relative to the outer pipeline.
In some embodiments, the working end of at least one of the first electrode and the second electrode is an elbow or a straight head, and the front ends of the first accommodating cavity and the second accommodating cavity are respectively matched with the shape of the working end of the corresponding electrode.
In some embodiments, the sliding adjusting block is in sliding fit with the inner wall of the outer pipeline, and the telescopic driving comprises:
The connecting block is arranged on the sliding adjusting block;
The connecting rod is movably arranged in the outer pipeline, and one end of the connecting rod is connected with the connecting block;
the sliding button is assembled on the holding structure in a sliding way, is connected with the other end of the connecting rod, slides along the axial direction of the outer pipeline, and can drive the sliding adjusting block to slide in a telescopic way relative to the outer pipeline through the connecting rod.
In some embodiments, the holding structure is provided with a first chute arranged along the axial direction of the outer pipeline, the sliding button is arranged outside the holding structure, and is connected with the first chute in a sliding manner and penetrates through the first chute to be connected with the connecting rod, and the first chute is provided with an adjustment scale for displaying the sliding position of the sliding button.
In some embodiments, a second sliding groove arranged along the axial direction of the outer pipeline is formed in the wall, close to the far end, of the outer pipeline, a sliding block matched with the second sliding groove is arranged on the sliding adjusting block, the sliding block is connected with the second sliding groove in a sliding manner and penetrates through the second sliding groove, and an adjusting scale used for displaying the telescopic position of the sliding adjusting block is arranged on the second sliding groove.
In some embodiments, the sliding adjusting block is provided with a liquid flushing hole channel with two open ends, a distal end port of the liquid flushing hole channel is arranged in an open mode, a proximal end port of the liquid flushing hole channel is connected with a liquid outlet end of the liquid flushing pipe, the liquid flushing pipe is movably arranged in the outer pipe, and a liquid inlet end of the liquid flushing pipe penetrates through the holding structure and is connected with the water pump.
In some embodiments, the distal end port of the flushing port is provided with an image acquisition device, and the image acquisition device is used for searching for bleeding points and monitoring the flushing state of the flushing part;
The water pump is in communication connection with the image acquisition device, and the water pump can automatically adjust the flushing flow according to the monitoring signal of the image acquisition device;
The radio frequency generating device is in communication connection with the image acquisition device, and the radio frequency generating device can adjust the output energy according to the monitoring signal of the image acquisition device.
In some embodiments, the rf coagulation ablation device further comprises an electrode cooling assembly comprising:
the cold circulation cavity is embedded in the holding structure and is internally provided with a liquid inlet cavity and a liquid return cavity which are mutually spaced;
the liquid outlet end of the liquid inlet pipeline is communicated with the liquid inlet cavity, and the liquid inlet end of the liquid inlet pipeline penetrates through the holding structure and is used for being externally connected with a cooling liquid supply device;
the liquid inlet end of the liquid return pipeline is communicated with the liquid return cavity, and the liquid outlet end of the liquid return pipeline penetrates through the holding structure and is used for discharging waste liquid;
the liquid inlet end of the liquid feeding inner pipe is communicated with the liquid inlet cavity;
The first electrode and the second electrode are respectively provided with the electrode cooling assembly, wherein:
The liquid delivery inner pipe is arranged in the liquid return channel I in a penetrating way, the liquid outlet end of the liquid delivery inner pipe extends into the cavity of the electrode I, the liquid delivery inner pipe is used for conveying cooling liquid into the electrode I so as to cool the working end of the electrode I, an annular liquid return pore canal is formed between the liquid return channel I and the liquid delivery inner pipe, and the annular liquid return pore canal is used for conveying the cooling liquid in the electrode I to the liquid return cavity;
the connection mode of the second electrode and the electrode cooling assembly is identical to the connection mode of the first electrode and the electrode cooling assembly.
In some embodiments, the cold-cycling cavity of at least one of the two sets of electrode cooling assemblies is slidably mounted with the gripping structure and is configured with a slip adjustment mechanism capable of driving the cold-cycling cavity to slide relative to the gripping structure to extend the electrode one or the electrode two out of the distal end of the outer tube or retract the electrode one or the electrode two into the outer tube to switch the bipolar assembly between a bipolar ablation mode and a monopolar ablation mode.
Compared with the prior art, the invention has the following technical effects:
The invention provides a novel radio frequency coagulation ablation device which can simultaneously realize accurate coagulation and ablation functions of tissues, can simultaneously meet the requirements of use under an open abdomen and use under a laparoscope, can realize adjustment of the sizes of coagulation points and coagulation surfaces, can realize bending in a narrower and more concealed space so as to reach the position which cannot be reached by a conventional coagulation device for coagulation, can realize smaller entrance into a human body and smaller trauma to the human body when used under the laparoscope, and can realize larger-range adjustment of the coagulation points, so that the device can realize the ablation and coagulation functions of the tissues in surgical operations such as the open abdomen or the laparoscope, and has the advantages of smaller trauma to the human body, adjustable coagulation points and coagulation surfaces, larger coagulation surface, higher coagulation efficiency and the like. The invention can also reduce the use of auxiliary instruments in the surgical operation, simultaneously avoid the safety risk of using various medical instruments, reasonably utilize medical resources and reduce the operation cost.
In some technical schemes disclosed by the invention, the flushing hole channel can detect the blood coagulation condition and the flushing state by arranging the image acquisition device, the water pump can automatically adjust the flushing flow according to the monitoring signal of the image acquisition device, so that a doctor has clear visual field during working, and the radio frequency generation device can adjust the output energy according to the monitoring signal of the image acquisition device, so that the adjustment and connection precision of a blood coagulation surface is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a RF coagulation ablation device according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an outer tube in a bent state in the rf coagulation ablation device according to the embodiment of the present invention;
FIG. 3 is a schematic view of a sliding adjusting block in a non-fully extended state in a RF coagulation ablation device according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a sliding adjustment block in a fully extended state (in which the sliding adjustment block has a maximum extension distance with respect to an outer tube) in a RF coagulation ablation device according to an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating the assembly of a straight-head electrode and a sliding adjusting block in a RF coagulation/ablation device according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating the assembly of an elbow electrode and a sliding adjustment block in a RF coagulation ablation device according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of the internal structure of a RF coagulation ablation device according to an embodiment of the present invention;
FIG. 8 is a schematic diagram illustrating assembly of an electrode and a sliding adjustment block in a RF coagulation ablation device according to an embodiment of the present invention;
FIG. 9 is a schematic diagram showing the working state of a single electrode in a RF coagulation ablation device according to an embodiment of the present invention;
Fig. 10 is a schematic diagram illustrating an assembly of an electrode and an electrode cooling assembly in a rf coagulation ablation device according to an embodiment of the present invention.
In the drawings, reference numerals are:
100. a radio frequency coagulation ablation device;
1. a grip structure; 11, a first chute, 12, a first adjustment scale;
2. the second slide way is provided with a second slide way and a second adjusting scale;
3. a bipolar component, 31, a first electrode, 32, a second electrode, 34 and a working end;
4. The device comprises a sliding adjusting block, a first containing cavity, a second containing cavity, a flushing hole, a 44, a sliding block, a 45 and a radian space, wherein the sliding adjusting block is arranged in the first containing cavity;
5. a radio frequency generating device; 51, a first radio frequency head, 52, a second radio frequency head, 53 and a radio frequency wire;
6. a connecting block;
7. a connecting rod;
8. A sliding button;
9. 91, water pump;
10. The electrode cooling assembly comprises an electrode cooling assembly body, a cooling circulation cavity body, a liquid inlet cavity, a liquid return cavity body, a liquid inlet pipeline, a liquid return pipeline, a liquid delivery inner pipe, an annular liquid return pore channel and an insulating pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a novel radio frequency coagulation ablation device, the working end of which can be switched between a release state and a storage state, the ablation device can be conveniently used under a laparoscope through a tiny wound in the storage state, and meanwhile, the working end has the characteristic of multi-angle bending after extending out, can accurately and flexibly reach a narrower and hidden part which cannot be reached by a conventional coagulation device, and is suitable for being applied to a part requiring accurate coagulation, so that the problems in the prior art are solved.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1 to 10, the present embodiment proposes a radiofrequency coagulation ablation device 100, which includes a holding structure 1, an outer tube 2, a bipolar assembly 3, a working end adjusting assembly and a radiofrequency generating device 5, wherein the distal end of the outer tube 2 is used for entering human tissue, the holding structure 1 is disposed at the proximal end, the holding structure 1 is generally a hollow handle structure, and the interior of the holding structure is communicated with the outer tube 2. The bipolar assembly 3 comprises a first electrode 31 and a second electrode 32, wherein the first electrode 31 and the second electrode 32 are arranged in the distal end of the outer pipeline 2 and are connected with the inside of the outer pipeline 2 through connecting pieces 33, and working ends 34 of the first electrode 31 and the second electrode 32 extend out of the distal end of the outer pipeline 2. The working end adjusting assembly comprises a sliding adjusting block 4 and a telescopic drive, wherein the sliding adjusting block 4 is movably arranged in the far end of the outer pipeline 2, a first containing cavity channel 41 and a second containing cavity channel 42 which are respectively matched with the first electrode 31 and the second electrode 32 are arranged on the sliding adjusting block 4, the first electrode 31 and the second electrode 32 are respectively movably assembled in the first containing cavity channel 41 and the second containing cavity channel 42, the working ends 34 of the first electrode 31 and the second electrode 32 are parts of the first electrode 31 and the second electrode 32 exposed out of the far end of the sliding adjusting block 4, and the telescopic drive is arranged on the outer pipeline 2 and used for driving the sliding adjusting block 4 to slide relative to the outer pipeline 2 so that the sliding adjusting block 4 extends out of the far end of the outer pipeline 2 and contains the first electrode 31 and the second electrode 32 or retracts into the far end of the outer pipeline 2 and releases the first electrode 31 and the second electrode 32. The radio frequency generating device 5 is arranged at the proximal end of the outer pipeline 2, two poles of the radio frequency generating device 5 are respectively and electrically connected with the first electrode 31 and the second electrode 32 and used for supplying radio frequency current to the first electrode 31 and the second electrode 32, and the radio frequency current flows between the working ends 34 of the first electrode 31 and the second electrode 32 without damaging tissues beyond the bipolar working ends. At least one of the outer tube 2 and the connector 33 is a plastic member so that the bipolar assembly 3 can be bent in different directions under different external forces.
In some embodiments, the parts of the electrode I31 and the electrode II 32 positioned in the outer pipeline 2 can be plastic parts, and whether the parts are bent or not can be selected at any position and any angle at the rear end of the sliding adjusting block 4, so that various hidden parts can be ablated by coagulation. In actual use, the bipolar component 3 can be made to select whether to bend or not according to clinical application scenes.
In some embodiments, the rf generating device 5 includes a first rf head 51 and a second rf head 2, where the first rf head 51 and the second rf head 2 are connected in parallel and then electrically connected to the first electrode 31 and the second electrode 32 through a rf line 53. It should be noted that the connection manner of the rf generating device 5 and the first electrode 31 and the second electrode 32 and the rf current supply principle are all conventional techniques, and are not described herein.
In some embodiments, the connecting piece 33 is a plastic rod, the inside of the connecting piece is hollow, the first electrode 31 and the second electrode 32 are respectively connected with the inside of the outer pipeline 2 through a plastic rod, the first electrode 31 and the second electrode 32 are arranged in a V shape, and the working ends 34 of the first electrode 31 and the second electrode 32 are respectively positioned at two ends of the V-shaped opening, so that the distance between the working ends 34 of the first electrode 31 and the second electrode 32 is adjusted in the process of stretching and sliding the sliding adjusting block 4 relative to the outer pipeline 2. The plastic material used for the connection member 33 is preferably elastic rubber, PEEK (polyether ether ketone) or the like, so as to ensure that the first electrode 31 and the second electrode 32 can automatically return to the "V-shaped" arrangement in the initial state after being out of the binding action of the sliding adjustment block 4. In the above-mentioned scheme, the sliding adjusting block 4 is configured to accommodate the first electrode 31 and the second electrode 32, and the sliding adjusting block 4 may adjust the extending angles of the first electrode 31 and the second electrode 32, and simultaneously adjust the extending lengths of the working ends of the first electrode 31 and the second electrode 32 (i.e., the exposed lengths of the working ends 34), so as to adjust the front end distances of the working ends of the first electrode 31 and the second electrode 32, where the distance adjustment mainly refers to the distance adjustment between the working ends 34 of the first electrode 31 and the second electrode 32, so as to implement dot coagulation, planar coagulation, columnar coagulation, etc., and the sizes of the coagulation points, coagulation surfaces, coagulation columnar surfaces, etc., for example, when the front ends of the working ends 34 use elbows, the front end distances of the working ends 34 of the two electrodes are increased, so that the surface coagulation range is larger, and when the front ends of the working ends 34 use straight needles, the front end distances of the working ends 34 are increased, so that the straight needle ablation surface is wider, and further, when the outer diameter of the outer tube 2 is smaller, single-point single coagulation range is also implemented, so that the coagulation efficiency is improved under the condition that the device enters into a human body wound to be smaller, and the following the minimally invasive effect is achieved. The first electrode 31 and the second electrode 32 are arranged in a V-shaped structure, so that the continuous seamless superposition of radio frequency energy can be realized in the moving process of planar coagulation, and the breakpoint in the coagulation ablation process is avoided.
In some embodiments, the working end 34 of at least one of the first electrode 31 and the second electrode 32 is an elbow or a straight head according to different clinical usage scenarios, and the front ends of the first receiving channel 41 and the second receiving channel 42 are respectively adapted to the shape of the working end 34 of the corresponding electrode. If the working ends 34 of the first electrode 31 and the second electrode 32 are straight ends, the whole of the first electrode 31 and the second electrode 32 is a straight electrode, and the corresponding receiving channel 41 and receiving channel 42 are straight channels, in general, when the extending distance of the sliding adjusting block 4 relative to the outer pipe 2 is the largest, the first electrode 31 and the second electrode 32 are completely received in the receiving channel 41 and the receiving channel 42, respectively, and at this time, the distal ends of the first electrode 31 and the second electrode 32 are flush with the distal ends of the receiving channel 41 and the receiving channel 42, respectively, or slightly shorter than the distal ends of the receiving channel 41 and the receiving channel 42. Correspondingly, as shown in fig. 5 and 6, if the working ends 34 of the first electrode 31 and the second electrode 32 are arc bends, the distal ends of the first receiving channel 41 and the second receiving channel 42 are set to arc spaces 45 adapted to the arc bends, and in general, when the sliding adjusting block 4 extends out to the maximum distance relative to the outer channel 2, the first electrode 31 and the second electrode 32 are completely received in the first receiving channel 41 and the second receiving channel 42, respectively, at this time, the distal arc bends of the first electrode 31 and the second electrode 32 are respectively embedded in the distal arc spaces 45 of the first receiving channel 41 and the second receiving channel 42, and the most protruding position of the outer circle of the arc bends is flush with the distal ends of the first receiving channel 41 and the second receiving channel 42, or is located inside the first receiving channel 41 and the second receiving channel 42.
In some embodiments, electrode one 31 and electrode two 32 are each preferably electrode needles. The distal tip of at least one of the first electrode 31 and the second electrode 32 is designed as a triangular needle or a blunt tip, depending on the clinical use scenario. In the first electrode 31 and the second electrode 32, the shape of the working end of the electrode and the form of the tip of the working end can be combined two by two.
In some embodiments, the first electrode 31 and the second electrode 32 are all rigid electrode pins.
In some embodiments, the sliding adjusting block 4 is in sliding fit with the inner wall of the outer pipeline 2, the telescopic driving comprises a connecting block 6, a connecting rod 7 and a sliding button 8, the connecting block 6 is arranged on the sliding adjusting block 4, the connecting rod 7 is a hard rod, such as a rigid metal rod, movably arranged in the outer pipeline 2, one end of the connecting rod 7 is connected with the connecting block 6, the sliding button 8 is in sliding fit on the holding structure 1 and is connected with the other end of the connecting rod 7, and the sliding button 8 can slide in a telescopic manner relative to the outer pipeline 2 along the axial direction of the outer pipeline 2 by driving the sliding adjusting block 4 through the connecting rod 7. As shown in fig. 4, when the sliding button 8 is pushed forward (pushed toward the distal end), the sliding adjusting block 4 shields part of the lengths of the electrode one 31 and the electrode two 32, at this time, the exposed working ends of the electrode one 31 and the electrode two 32 become smaller, the distance between the working ends is reduced, and the included angle between the working ends is reduced, as shown in fig. 5, when the sliding button 8 is pushed forward (pushed toward the distal end) continuously, the sliding adjusting block 4 is pushed forward (pushed toward the distal end) continuously until the electrode one 31 and the electrode two 32 are completely accommodated in the sliding adjusting block 4, at this time, the sliding adjusting block 4 shields the electrode one 31 and the electrode two 32 completely, and the length of the exposed working ends 34 of the electrode one 31 and the electrode two 32 is 0, at this time, the sliding adjusting block 4 can enter the human body through the duct of the laparoscope better.
In some embodiments, a first chute 11 is formed on the holding structure 1 and disposed along the axial direction of the outer pipe 2, the sliding button 8 is disposed outside the holding structure 1, the sliding button 8 is slidably connected with the first chute 11 and penetrates the first chute 11 to be connected with the connecting rod 7, and an adjustment scale 12 for displaying the sliding position of the sliding button 8 is disposed on the first chute 11. When the sliding button 8 slides in the first chute 11, the length of the working end of the electrode can be judged according to the scale of the position of the sliding button 8.
In some embodiments, a second sliding groove 21 is formed in the pipe wall of the outer pipe 2 near the far end of the outer pipe 2, a sliding block 44 matched with the second sliding groove 21 is arranged on the sliding adjusting block 4, the sliding block 44 is in sliding connection with the second sliding groove 21 and penetrates through the second sliding groove 21, and an adjusting scale 22 for displaying the telescopic position of the sliding adjusting block 4 is arranged on the second sliding groove 21. The sliding block 44 is preferably a sliding column, the upper end of the sliding block 44 is located in the second sliding groove 21, the outer end of the sliding column is flush with the outer diameter surface of the outer pipeline 2, the sliding block 44 has the functions of axial limiting and circumferential limiting, when the sliding adjusting block 4 slides forwards and backwards synchronously, the sliding block 44 slides forwards and backwards along with the sliding adjusting block 4, the axial forward and backward limiting of the sliding adjusting block 4 can be realized at the two ends of the second sliding groove 21, the forward and backward sliding distance of the sliding adjusting block 4 is avoided, the circumferential limiting of the sliding adjusting block 4 can be realized by the second sliding groove 21, and the circumferential rotation of the sliding adjusting block 4 is avoided. When the sliding block 44 slides in the second sliding groove 21, the length of the working end of the electrode can be judged according to the scale of the position of the sliding block 44.
In some embodiments, the second adjustment scale 22 and the first adjustment scale 12 preferably have the same indication value, the second adjustment scale 22 is close to the working end 34, so that the scales and the actual working end are on the same picture, the working end 34 and the second adjustment scale 22 are both in the body especially when the laparoscope is used, the length of the working end 34 and the real-time value of the second adjustment scale 22 can be directly seen on the display screen, the holding structure 1 is not needed to be seen when the length of the working end 34 is adjusted, the length of the working end 34 and the value of the second adjustment scale 22 are directly seen through the display screen, the operation time can be saved, and the second adjustment scale 22 and the first adjustment scale 12 have mutual verification function and are more accurate.
In some embodiments, the sliding adjusting block 4 is externally designed in a cylindrical manner, the accommodating cavity I41 and the accommodating cavity II 42 are both in a wedge-shaped hole structure, and are designed in a 'rising wedge' -shape, the side edges of the distal end parts of the accommodating cavity I41 and the accommodating cavity II 42 are open, when the sliding adjusting block 4 is retracted into the outer pipeline 2 and exposes the working ends 34 of the electrode I31 and the electrode II 32, the distance between the two working ends 34 of the electrode I31 and the electrode II 32 is conveniently enlarged, the range of coagulation ablation is enlarged, and correspondingly, the sliding adjusting block 4 extends out of the outer pipeline 2, the binding of the electrode I31 and the electrode II 32 can be realized, the electrode I31 and the electrode II 32 are accommodated in the sliding adjusting block 4, the outer diameter of the sliding adjusting block 4 is smaller than the outer diameter of the outer pipeline 2, the axial length of the outer pipeline 2 is only prolonged when the sliding adjusting block 4 extends, compared with the electrode I31 and the electrode II 32 in a release state when the sliding adjusting block 4 is arranged at the distal end, the electrode I31, the electrode II 32 and the sliding adjusting block 4 form a columnar whole, the electrode I32 and the sliding adjusting block 4 can form a larger range, and the electrode I can enter the puncture port and the electrode II more widely, and the puncture port can be realized, and the electrode II can enter the puncture port more easily, and the puncture port can enter the puncture port more, and the puncture port can be better, and the puncture port can reach the range, and the puncture port, and the wound can be better, and the puncture port can reach the wound, and the wound can be better, and the wound.
In some embodiments, the outer tube 2 is preferably a plastic material, such as silicone or a plastic metal.
In some embodiments, the outer diameter of the outer tube 2 is preferably 4 mm-8 mm, and compared with the conventional technology, the outer diameter is greatly reduced, so that the outer tube is more beneficial to access to a laparoscope. The outer diameter of the outer pipeline 2 is preferably 5mm, and correspondingly, the maximum distance adjustment range of the working ends of the first electrode 31 and the second electrode 32 can reach 11 mm-13 mm, so that the purposes of small wound and large coagulation ablation range are realized.
In some embodiments, the sliding adjusting block 4 is provided with a flushing hole channel 43 with two open ends, the distal end port of the flushing hole channel 43 is arranged in an open mode, the proximal end port of the flushing hole channel 43 is connected with the liquid outlet end of the flushing pipe 9, the flushing pipe 9 is movably arranged in the outer pipeline 2, the liquid inlet end of the flushing pipe 9 penetrates through the holding structure 1 and is connected with the water pump 91, and the water pump 91 is used for externally connecting a flushing liquid supply device. The flushing hole channel 43 is positioned at the center of the front end of the sliding adjusting block 4, can automatically flush the blood which is diffused on the surface of the tissue under the control of the water pump 91, and assists in accurately finding a bleeding point so as to accurately coagulate.
In some embodiments, the distal port of the irrigation port 43 is provided with an image acquisition device. The image acquisition device is used for searching bleeding points, achieving accurate ablation and coagulation, and can monitor the flushing state of the flushing part. The water pump 91 can be according to the size of the monitoring signal automatically regulated washing flow of image acquisition device, if monitor that the ablation position bleeds too much, then the water pump 91 automatic increase washing flow, on the contrary the water pump 91 automatic decrease washing flow to in order to avoid the blood coagulation ablation scope too big, when the radio frequency energy output, the water pump 91 can be in the off state automatically. The water pump 91 can also manually adjust the input flow, and the water pump 91 is internally provided with a pressure detection and adjustment device, and after the required water flow is manually input, the pressure detection and adjustment device can detect the pressure in the flushing pipe 9 at the moment and automatically adjust the pressure to the pressure corresponding to the required water flow, so that the water flow of the flushing duct 43 is accurately adjusted. The image acquisition device generally adopts a miniature camera, a controller is configured in the holding structure 1, the water pump 91 and the image acquisition device are both in communication connection with the controller, and the controller can receive acquisition signals of the image acquisition device and control the opening and closing of the water pump 91 and the water flow rate of the pump according to the acquisition signals.
In some embodiments, the rf generating device 5 is wirelessly connected to the image capturing device, and the rf generating device 5 can adjust the rf energy applied to the first electrode 31 and the second electrode 32 according to the monitoring signal of the image capturing device.
In some embodiments, the rf coagulation ablation device 100 further includes an electrode cooling assembly 10, as shown in fig. 10, where the electrode cooling assembly 10 includes a cold circulation cavity 101, a liquid inlet pipe 104, a liquid return pipe 105 and a liquid feeding inner pipe 106, the cold circulation cavity 101 is embedded in the holding structure 1, the cold circulation cavity 101 is provided with a liquid inlet cavity 102 and a liquid return cavity 103 spaced apart from each other, a liquid outlet end of the liquid inlet pipe 104 is communicated with the liquid inlet cavity 102, a liquid inlet end of the liquid inlet pipe 104 penetrates the holding structure 1 for externally connecting a cooling liquid supply device, a liquid inlet end of the liquid return pipe 105 is communicated with the liquid return cavity 103, a liquid outlet end of the liquid return pipe 105 penetrates the holding structure 1 for discharging the waste liquid, a liquid inlet end of the liquid feeding inner pipe 106 is communicated with the liquid inlet cavity 102, and the electrode one 31 and the electrode two 32 are respectively configured with the electrode cooling assembly 10, where:
the electrode I31 is hollow, the far end of the electrode I is communicated with the liquid return cavity 103 through a corresponding connecting piece 33 to form a liquid return channel I, the liquid delivery inner pipe 106 is arranged in the liquid return channel I in a penetrating way, the liquid outlet end of the liquid delivery inner pipe 106 extends into the cavity of the electrode I31, the liquid delivery inner pipe 106 is used for delivering cooling liquid into the electrode I31 to cool the working end 34 of the electrode I31, an annular liquid return pore canal 107 is formed between the liquid return channel I and the liquid delivery inner pipe 106, and the annular liquid return pore canal 107 is used for delivering the cooling liquid in the electrode I31 to the liquid return cavity 103;
The structure of the first electrode 31 and the second electrode 32, the connection mode of the second electrode 32 and the electrode cooling assembly 10, and the connection mode of the first electrode 31 and the electrode cooling assembly 10 are all identical.
In the first electrode 31 and the second electrode 32, the refrigerant medium reaches the front end of the working end of the electrode through the liquid feeding inner pipe 106, reaches the liquid return cavity 103 from the annular liquid return pore canal 107 and finally flows back to the refrigerant medium liquid storage tank, and the design realizes the circulating cooling of the working ends of the first electrode 31 and the second electrode 32 and surrounding tissues thereof.
In some embodiments, the inner liquid feeding pipe 106 is softened to facilitate bending according to bending of the outer pipe 2.
In some embodiments, to avoid short circuits, an insulating tube 108 may be sleeved outside the first electrode 31, the second electrode 32, and the connecting member 33. The first electrode 31 and the second electrode 32 are made of metal materials to have a conductive function, the connecting piece 33 is made of a double-layer tube, the inner tube is connected with the first electrode 31 and the second electrode 32, the inner tube is made of metal materials to realize the conductive function, and the outer tube of the connecting piece can be made of metal materials or nonmetal materials according to requirements.
In some embodiments, the outer pipe 2 is preferably a plastic metal pipe, and the plastic metal pipe can be bent at any angle at any position on the rear end of the sliding adjusting block 4.
In some embodiments, the sliding adjustment block 4 is preferably made of an insulating material.
In some embodiments, the cold-cycling cavity 101 of at least one of the two sets of electrode cooling assemblies 10 is slidably mounted with the grip structure 1, and a slip adjustment mechanism is configured to enable the cold-cycling cavity 101 to be driven to slide relative to the grip structure 1 to extend the electrode one 31 or electrode two 32 out of the distal end of the outer tube 2, or retract the electrode one 31 or electrode two 32 into the outer tube 2, to switch the bipolar assembly 3 between the bipolar ablation mode and the monopolar ablation mode. In general, according to different clinical requirements, one of the first electrode 31 and the second electrode 32 is withdrawn, and the other one is kept unchanged in the original installation position, and the withdrawn one is received into the sliding adjusting block 4, so that only single-electrode work can be realized, and more accurate punctiform coagulation ablation can be realized. If a monopolar ablation mode is used, a neutral electrode sheet needs to be pasted.
In some embodiments, the sliding adjustment mechanism for driving the cooling circulation cavity 101 may adopt a structure in which the sliding button 8 is matched with a hard connecting rod, or other common linear telescopic driving mechanisms may be configured, such as an electric sliding table, a telescopic cylinder, a telescopic hydraulic cylinder, a linear motor, etc.
In some embodiments, the driving cooling circulation cavity 101 is preferably a mini cooling circulation cavity, and has a diameter and a length of 1cm, so that heat exchange can be rapidly realized, cooling efficiency is improved, meanwhile, the volume of the holding structure 1 is reduced, the weight of the holding structure 1 is reduced, and the holding and operation in operation are facilitated.
Aiming at the problems existing in the processes of tissue ablation, coagulation and the like under surgical open abdomen or laparoscope in the prior art, the invention provides a novel radio frequency coagulation ablation device which can simultaneously realize accurate coagulation and ablation functions of tissues, can simultaneously meet the requirements of open abdomen use and laparoscopic use, can realize the adjustment of the sizes of a coagulation point and a coagulation surface, can realize the bending in a narrower and more hidden space so as to achieve the coagulation of a part which cannot be reached by a conventional coagulation device, can realize smaller entrance into a human body, smaller trauma to the human body and larger adjustment of the coagulation point at the same time when being used under the laparoscope, and has the advantages of smaller trauma to the human body, adjustable size of the coagulation point and the coagulation surface, larger coagulation surface, higher coagulation efficiency and the like. The invention can also reduce the use of auxiliary instruments in the surgical operation, avoid the safety risk of using various medical instruments, reasonably utilize medical resources, reduce the operation cost and benefit patients.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or adjustments of the sizes, which are otherwise, used in the practice of the invention, are included in the spirit and scope of the invention which is otherwise, without departing from the spirit or scope thereof. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like are used herein for descriptive purposes only and not for purposes of limitation, and are intended to limit the scope of the invention as defined by the claims and the relative terms thereof as construed as corresponding to the claims.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided herein to facilitate understanding of the principles and embodiments of the present invention and to provide further advantages and practical applications for those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202510704440.3A CN120436777A (en) | 2025-05-28 | 2025-05-28 | A radiofrequency coagulation ablation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202510704440.3A CN120436777A (en) | 2025-05-28 | 2025-05-28 | A radiofrequency coagulation ablation device |
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| CN202510704440.3A Pending CN120436777A (en) | 2025-05-28 | 2025-05-28 | A radiofrequency coagulation ablation device |
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