WO2023240855A1 - 射频手术刀及系统 - Google Patents

射频手术刀及系统 Download PDF

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Publication number
WO2023240855A1
WO2023240855A1 PCT/CN2022/124682 CN2022124682W WO2023240855A1 WO 2023240855 A1 WO2023240855 A1 WO 2023240855A1 CN 2022124682 W CN2022124682 W CN 2022124682W WO 2023240855 A1 WO2023240855 A1 WO 2023240855A1
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WIPO (PCT)
Prior art keywords
knife
blade
distal end
scabbard
insulation layer
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PCT/CN2022/124682
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English (en)
French (fr)
Inventor
何熠辉
孙晓安
曹文宾
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上海修能医疗器械有限公司
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Application filed by 上海修能医疗器械有限公司 filed Critical 上海修能医疗器械有限公司
Publication of WO2023240855A1 publication Critical patent/WO2023240855A1/zh

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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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • A61B10/02—Instruments for taking cell samples or for biopsy
    • A61B10/0233—Pointed or sharp biopsy instruments
    • A61B10/0266—Pointed or sharp biopsy instruments means for severing sample
    • A61B10/0275—Pointed or sharp biopsy instruments means for severing sample with sample notch, e.g. on the side of inner stylet
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • A61B10/02—Instruments for taking cell samples or for biopsy
    • A61B10/0233—Pointed or sharp biopsy instruments
    • A61B10/0283—Pointed or sharp biopsy instruments with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/148—Probes or electrodes therefor having a short, rigid shaft for accessing the inner body transcutaneously, e.g. for neurosurgery or arthroscopy
    • 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
    • A61B2018/00053—Mechanical features of the instrument of device
    • A61B2018/00184—Moving parts
    • 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

Definitions

  • the present invention relates to the technical field of medical devices, and in particular to a radio frequency scalpel and a system.
  • the present invention provides a radiofrequency scalpel and a system to solve the problems in the prior art of small amount of tissue being cut at a time and large bleeding during the cutting process.
  • a radiofrequency scalpel which includes: a blade head and a blade handle; wherein,
  • the cutter head includes: an outer cutter, an inner cutter, and a scabbard. From the distal end to the proximal end of the cutter head, the distal end of the outer cutter and the distal end of the inner cutter are distributed in sequence; The distal end is the end of the cutter head away from the handle;
  • the outer knife, the inner knife, and the scabbard are coaxial, and the three are respectively connected to the handle;
  • Part of the inner knife is inserted into the scabbard, and the distal end of the inner knife protrudes out of the scabbard.
  • the distal end of the inner knife is the end of the inner knife away from the handle. ;
  • the inner knife and the outer knife are configured to move relative to each other along the axial direction;
  • the inner knife includes: an electrode, the electrode is connected to a radio frequency generating device; the electrode covers part or all of the cross section of the distal end of the inner knife;
  • the interior of the inner knife or its internal channel is configured to be connected to a negative pressure device.
  • the outer knife includes: a knife tip, an insulation layer of the outer knife, and a support rod;
  • the outer blade insulation layer is provided at the proximal end of the blade tip, and the proximal end of the blade tip is an end of the blade tip close to the blade handle;
  • the support rod is connected to the proximal end of the outer blade insulating layer, or passes through the outer blade insulating layer to connect to the proximal end of the blade tip.
  • the proximal end of the outer blade insulating layer is the end of the outer blade insulating layer. the end away from the tip of said knife;
  • the electrode is sleeved on the outside of the support rod
  • the inner knife and the outer knife are configured to be capable of relative movement along the axial direction.
  • the electrode and the support rod are configured to be capable of relative movement along the axial direction;
  • the inner blade includes an inner blade insulation layer, and the inner blade insulation layer covers the surface of the inner blade except the electrode.
  • a sampling gap is left between the inner wall of the inner knife and the outer wall of the support rod, and the sampling gap is configured to serve as a part of the air flow channel of the negative pressure device.
  • a radiofrequency scalpel which includes: a blade head and a blade handle; wherein,
  • the cutter head includes: an outer cutter, an inner cutter, and a sheath; the distal end of the outer cutter is located at the distal end of the cutter head, and the distal end of the cutter head is the end of the cutter head away from the handle.
  • One end, the distal end of the outer knife is the end of the outer knife away from the handle;
  • the outer knife, the inner knife, and the scabbard are coaxial;
  • the inner knife and the scabbard are respectively connected to the handle, and the distal end of the scabbard is fixedly connected to the outer knife; the distal end of the scabbard is the end of the scabbard away from the handle ;
  • the distal end of the scabbard has a scabbard notch
  • the distal end of the inner knife is inserted into the sheath, the inner knife and the sheath are configured to move relative to each other in the axial direction, and during the relative movement, the distal end of the inner knife can Enter into the notch of the scabbard;
  • the inner knife includes: an electrode, the electrode is connected to a radio frequency generating device; the electrode covers part or all of the cross section of the distal end of the inner knife;
  • the interior of the inner knife or its internal channel is configured to be connected to a negative pressure device.
  • the outer knife includes: a knife tip and an outer knife insulation layer;
  • the outer blade insulation layer is provided at the proximal end of the blade tip, and the proximal end of the blade tip is an end of the blade tip close to the blade handle;
  • the distal end of the scabbard is fixedly connected to the outer knife, specifically: the distal end of the scabbard is fixedly connected to the insulation layer of the outer knife;
  • the inner blade includes an inner blade insulation layer, and the inner blade insulation layer covers the surface of the inner blade except the electrode.
  • the method further includes: a sheath insulation layer, the sheath insulation layer covering the edge of the sheath notch and the inner surface of the sheath.
  • sampling gap between the outer wall of the inner knife and the inner wall of the sheath, and the sampling gap is configured to serve as a part of the airflow channel of the negative pressure device.
  • a radiofrequency scalpel which includes: a blade head and a blade handle; wherein,
  • the cutter head includes: an outer cutter, an inner cutter, and a sheath; the distal end of the outer cutter is located at the distal end of the cutter head, and the distal end of the cutter head is the end of the cutter head away from the handle.
  • One end, the distal end of the outer knife is the end of the outer knife away from the handle;
  • the outer knife, the inner knife, and the scabbard are coaxial;
  • the inner knife and the scabbard are respectively connected to the handle, and the distal end of the scabbard is fixedly connected to the outer knife; the distal end of the scabbard is the end of the scabbard away from the handle ;
  • the distal end of the inner knife is inserted into the scabbard
  • the distal end of the inner knife has an inner knife notch, and the distal end of the scabbard has a sheath notch;
  • the inner knife includes: an electrode, the electrode is connected to a radio frequency generating device, the electrode covers the non-radial cross-section groove edge or part of the non-radial cross-section groove edge of the inner knife slot, and the non-radial cross-section groove The edge is the edge of the groove that is not located in the radial section of the inner cutter;
  • the inner knife and the outer knife are configured to relatively rotate around the central axis of the knife head, and during the relative rotation, the electrode can enter the sheath notch;
  • the interior of the inner knife or its internal channel is configured to be connected to a negative pressure device.
  • the outer knife includes: a knife tip and an outer knife insulation layer;
  • the outer blade insulation layer is provided at the proximal end of the blade tip, and the proximal end of the blade tip is an end of the blade tip close to the blade handle;
  • the distal end of the scabbard is fixedly connected to the outer knife, specifically: the distal end of the scabbard is fixedly connected to the insulation layer of the outer knife;
  • the inner knife includes: a support shaft and an inner knife insulation layer;
  • the inner knife notch is provided at the distal end of the support shaft
  • the inner blade insulation layer covers the surface of the inner blade except the electrode.
  • the method further includes: a sheath insulation layer, the sheath insulation layer covering the edge of the sheath notch and the inner surface of the sheath.
  • sampling gap between the outer wall of the inner knife and the inner wall of the sheath, and the sampling gap is configured to serve as a part of the airflow channel of the negative pressure device.
  • a radiofrequency surgical system which includes: a negative plate and the radiofrequency scalpel described in any one of the above;
  • the negative plate and the radiofrequency scalpel are respectively part of the radiofrequency circuit.
  • the inner knife and the outer knife can move or rotate relative to each other.
  • the inner knife is retracted, the radio frequency generating device is turned on, and the electrode at the distal end of the inner knife starts to work.
  • the tissue is adsorbed near the electrode (between the inner knife and the outer knife), and then the inner knife is advanced to achieve cutting.
  • the cutting resistance is small, the amount of tissue cut in a single time is large, and the radio frequency has a certain coagulation effect, and the amount of bleeding during the cutting process is small. .
  • sampling gap between the inner knife and the support rod or between the inner knife and the sheath.
  • the sampling gap is configured to serve as a part of the airflow channel of the negative pressure device, and the cut tissue can be It is attracted into the sample tank by negative pressure.
  • Figure 1 is a schematic diagram of a radiofrequency scalpel according to an embodiment of the present invention.
  • Figure 2 is a schematic diagram and a partial enlarged view of the retraction of the radiofrequency scalpel according to an embodiment of the present invention
  • Figure 3 is a schematic diagram of a radiofrequency scalpel according to another embodiment of the present invention.
  • Figure 4 is a schematic diagram and a partial enlarged view of the retraction of the radiofrequency scalpel according to another embodiment of the present invention.
  • Figure 5 is a schematic diagram of a radiofrequency scalpel according to another embodiment of the present invention.
  • Figure 6 is a schematic diagram and a partial enlarged view of the retraction of the radiofrequency scalpel according to another embodiment of the present invention.
  • Figure 7 is a schematic diagram of the inner knife according to an embodiment of the present invention.
  • Figure 8 is a schematic diagram of an inner knife according to another embodiment of the present invention.
  • Figure 9 is a schematic diagram of an inner knife according to another embodiment of the present invention.
  • first and second are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, features defined as “first” and “second” may explicitly or implicitly include one or more of these features.
  • plural means a plurality, such as two, three, four, etc., unless otherwise clearly and specifically limited.
  • connection and other terms should be understood in a broad sense.
  • it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection. , it can also be electrically connected or can communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediary, it can be the internal connection of two components or the interaction between two components.
  • connection can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection. , it can also be electrically connected or can communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediary, it can be the internal connection of two components or the interaction between two components.
  • a radiofrequency scalpel which includes: a blade head and a handle (not shown in the figure); wherein, the blade head includes: an outer blade 1, an inner blade 2, and a scabbard 3.
  • the blade head includes: an outer blade 1, an inner blade 2, and a scabbard 3.
  • the distal end of the cutter head is the end of the cutter head away from the handle.
  • the outer knife 1, the inner knife 2, and the scabbard 3 are coaxial, and the three are connected to the handle respectively.
  • the inner knife 2 and the outer knife 1 are configured to move relative to each other along the axial direction; the inner knife includes: an electrode 21, which is connected to a radio frequency generating device; the electrode 21 covers part or all of the cross-section of the distal end of the inner knife 2, please Refer to Figure 2.
  • the interior of the inner knife or its internal passage is configured to be connected to the negative pressure device.
  • the working principle of the radiofrequency scalpel in the above embodiment is as follows: placing the negative plate at a suitable position of the patient according to the surgical target area.
  • the inner knife 2 moves in the axial direction relative to the outer knife 1, so that the electrode 22 of the inner knife 2 contacts the outer knife 1, that is, the inner knife is in a closed state.
  • the radiofrequency scalpel is inserted into the surgical target area, and then the inner knife 2 moves toward the target area.
  • the negative pressure device is turned on. After the knife is retracted to a certain position, the inner knife 2 stops running.
  • the tissue will be adsorbed near the electrode 22 , the inner knife 2 runs in the direction of the outer knife 1.
  • the radio frequency generating device is turned on, and the electrode 22 transmits the radio frequency energy to the human tissue, that is, the cutting effect is realized.
  • the inner knife 1 runs, and the electrode 22 contacts the outer knife 1 again, that is, cutting Finish.
  • the outer blade includes: a blade tip 11, an outer blade insulation layer 12, and a support rod 13.
  • the outer blade insulation layer 12 is provided at the proximal end of the blade tip 11, and the proximal end of the blade tip 11 is the end of the blade tip 11 close to the handle; the support rod 13 is connected to the proximal end of the outer blade insulation layer 12, or passes through the outer blade 12.
  • the blade insulation layer is connected to the proximal end of the blade tip 11 , and the proximal end of the outer blade insulation layer 13 is the end of the outer blade insulation layer 13 away from the blade tip 11 .
  • the electrode 21 is sleeved on the outside of the support rod 13 . Further, the inner blade 2 and the outer blade 1 are configured to be able to move relative to each other along the axial direction. Specifically, the electrode 21 and the support rod 13 are configured to be able to move relative to each other along the axial direction.
  • the inner blade includes an inner blade insulation layer 22 , and the inner blade insulation layer covers the surface of the inner blade except the electrode.
  • the inner blade insulation layer 22 includes two layers: a first inner blade insulation layer 221 and a second inner blade insulation layer 222 .
  • the first inner blade insulation layer 221 covers the outer layer of the inner blade 2
  • the second inner blade insulation layer 222 covers the inner layer of the inner blade 2 .
  • the outer layer of the inner knife is the layer of the inner knife that is away from the support rod
  • the inner layer of the inner knife is the layer of the inner knife that is close to the support rod.
  • a sampling gap is left between the inner wall of the inner knife and the outer wall of the support rod.
  • the sampling gap is configured to serve as a part of the air flow channel of the negative pressure device, providing a channel for the negative pressure device to use negative pressure for sampling.
  • the negative pressure device can be used to draw the cut tissue sample through the air flow channel into the sample groove of the knife handle.
  • a radiofrequency scalpel which includes: a blade head and a handle (not shown in the figure); wherein, the blade head includes: an outer blade 1, an inner blade 2, and a scabbard 3. Please refer to the figure. 3.
  • the distal end of the outer knife 1 is located at the far end of the cutter head.
  • the distal end of the cutter head is the end of the cutter head away from the handle.
  • the distal end of the outer cutter is the end of the outer cutter away from the handle.
  • the outer knife 1, the inner knife 2, and the scabbard 3 are coaxial; the inner knife 2 and the scabbard 3 are connected to the handle respectively, and the distal end of the scabbard 3 is fixedly connected to the outer knife 1; the distal end of the scabbard 3 is the scabbard 3 the end away from the knife handle.
  • the distal end of the scabbard 3 has a scabbard notch 31 .
  • the distal end of the inner knife 2 is inserted into the sheath 3.
  • the inner knife 2 and the sheath 3 are configured to move relative to each other along the axial direction, and during the relative movement, the distal end of the inner knife 2 can enter the sheath notch. Within 31.
  • the inner knife 2 includes: an electrode 21, which is connected to a radio frequency generating device; the electrode 21 covers part or all of the cross section of the distal end of the inner knife, please refer to Figure 4.
  • the interior of the inner knife or its internal passage is configured to be connected to the negative pressure device.
  • the working principle of the radiofrequency scalpel in the above embodiment is as follows: placing the negative plate at a suitable position of the patient according to the surgical target area.
  • the inner knife 2 moves in the axial direction relative to the outer knife 1, so that the electrode 22 of the inner knife 2 contacts the outer knife 1, that is, the inner knife is in a closed state.
  • the radiofrequency scalpel is inserted into the surgical target area, and then the inner knife 2 moves toward Run in the direction away from the outer knife 1, that is, retract the knife.
  • the negative pressure device is turned on. After the knife is retracted to a certain position, the inner knife 2 stops running.
  • the tissue will be adsorbed near the electrode 22 , the inner knife 2 runs in the direction of the outer knife 1.
  • the radio frequency generating device is turned on, and the electrode 22 transmits the radio frequency energy to the human tissue, that is, the cutting effect is realized.
  • the inner knife 1 runs, and the electrode 22 contacts the outer knife 1 again, that is, cutting Finish.
  • the outer blade 1 includes: a blade tip 11 and an outer blade insulation layer 12. Please refer to Figure 4 .
  • the outer blade insulation layer 12 is provided at the proximal end of the blade tip 11 , and the proximal end of the blade tip 11 is the end of the blade tip 11 close to the blade handle.
  • the distal end of the scabbard 3 is fixedly connected to the outer blade, specifically: the distal end of the scabbard 3 is fixedly connected to the outer blade insulation layer 12 .
  • the inner blade 2 includes an inner blade insulation layer, and the inner blade insulation layer covers the surface of the inner blade except the electrode.
  • the inner blade insulation layer includes two layers: a first inner blade insulation layer 221 and a second inner blade insulation layer 222 .
  • the first inner blade insulation layer 221 covers the outer layer of the inner blade 2
  • the second inner blade insulation layer 222 covers the inner layer of the inner blade 2 .
  • the outer layer of the inner knife is the layer of the inner knife that is close to the scabbard 3
  • the inner layer of the inner knife is the layer of the inner knife that is far away from the scabbard 3.
  • the radiofrequency scalpel further includes: a sheath insulation layer 32.
  • the sheath insulation layer 32 covers the edge of the sheath notch 31 and the inner surface of the sheath 3. Please refer to Figure 4.
  • the sheath insulating layer 32 can be connected to the outer blade insulating layer 12, and the two can also have an integrated structure.
  • sampling gap there is a sampling gap between the outer wall of the inner knife 2 and the inner wall of the scabbard 3.
  • the sampling gap is configured to serve as a part of the air flow channel of the negative pressure device, providing a channel for the negative pressure device to use negative pressure for sampling.
  • the negative pressure device can be used to draw the cut tissue sample through the air flow channel into the sample groove of the knife handle.
  • a radiofrequency scalpel which includes: a blade head and a handle (not shown in the figure); wherein, the blade head includes: an outer blade 1, an inner blade 2, and a scabbard 3. Please refer to the figure. 5.
  • the distal end of the outer knife 1 is located at the far end of the cutter head.
  • the distal end of the cutter head is the end of the cutter head away from the handle.
  • the distal end of the outer cutter 1 is the end of the outer cutter away from the handle.
  • the outer knife 1, the inner knife 2 and the scabbard 3 are coaxial.
  • the inner knife 2 and the scabbard 3 are respectively connected to the knife handle, and the distal end of the scabbard 3 is fixedly connected to the outer knife 1; the distal end of the scabbard 3 is the end of the scabbard 3 away from the knife handle.
  • the distal end of the inner knife 2 is inserted into the scabbard 3 .
  • the distal end of the inner knife 2 has an inner knife notch 23, and the far end of the sheath 3 has a sheath notch 31.
  • the inner knife 2 includes: an electrode 21.
  • the electrode 21 is connected to the radio frequency generating device.
  • the electrode 21 covers the non-radial cross-section groove edge or part of the non-radial cross-section groove edge of the inner knife groove.
  • the non-radial cross-section groove edge is not located in the inner knife.
  • the inner knife 2 and the outer knife 1 are configured to relatively rotate around the central axis of the knife head, and during the relative rotation, the electrode 21 can enter the sheath notch 31 .
  • the working principle of the radiofrequency scalpel in the above embodiment is as follows: placing the negative plate at a suitable position of the patient according to the surgical target area.
  • the inner knife 2 rotates relative to the outer knife 1, so that the scabbard notch 31 of the scabbard 3 is staggered with the inner knife notch 23 of the inner knife 2, that is, the scabbard notch 31 is basically completely blocked by the surface of the inner knife 2, that is, the inner knife
  • the radiofrequency scalpel is inserted into the surgical target area, and then the inner knife 2 is rotated again, that is, the knife is withdrawn until the electrode 21 is located at one edge of the sheath notch and the inner knife notch 23 is in contact with the knife.
  • the negative pressure device is turned on. At this time, the tissue will be adsorbed in the inner knife notch 23, that is, near the electrode 21.
  • the inner knife 2 rotates so that the electrode 21 passes through the sheath notch 31 and moves toward the sheath groove.
  • the other edge of the mouth 31 runs in the direction.
  • the radio frequency generating device is turned on, and the electrode 21 transmits the radio frequency energy to the human tissue, that is, the cutting effect is achieved.
  • the electrode 21 rotates to the other edge position of the sheath notch 31, that is, the position where the sheath notch 31 is basically completely blocked by the inner knife surface, the cutting is completed.
  • the outer blade 1 includes: a blade tip 11 and an outer blade insulation layer 12. Please refer to Figure 6 .
  • the outer blade insulation layer 12 is provided at the proximal end of the blade tip 11 , and the proximal end of the blade tip 11 is the end of the blade tip 11 close to the blade handle.
  • the distal end of the scabbard 3 is fixedly connected to the outer blade 1, specifically: the distal end of the scabbard 3 is fixedly connected to the outer blade insulation layer 12.
  • the inner knife 2 includes: a support shaft 24, please refer to Figure 6; the inner knife slot 23 is provided at the distal end of the support shaft 24.
  • the radiofrequency scalpel further includes: a sheath insulation layer 32.
  • the sheath insulation layer 32 covers the edge of the sheath notch 31 and the inner surface of the sheath 3. Please refer to FIG. 6 .
  • a support layer 25 is provided on the side of the inner knife slot close to the outer knife for supporting the electrode 21. At this time, the two ends of the electrode 21 are respectively fixed to the support shafts 24 on both sides of the inner knife slot. and support layer 25, please refer to Figure 7.
  • the support shaft 24 and the support layer 25 are made of insulating material, or are wrapped with an insulating layer to form an insulator.
  • the support layer may not be included, and the electrode 21 may be directly attached to the non-radial cross-section groove edge of the inner knife groove mouth. Please refer to Figures 8 and 9.
  • the electrode 21 When the electrode 21 is directly attached to the non-radial cross-section groove edge of the inner knife slot, it may also include: an inner knife insulation layer, and the inner knife insulation layer covers the surface of the inner knife 2 except for the electrode.
  • the electrode 21 can be a straight rod-shaped structure, please refer to Figure 7; it can also be a straight rod plus a bent tube, please refer to Figure 8; or it can be a curved rod-shaped structure, please refer to Figure 9. As long as it can complete the cutting function.
  • the shape of the inner knife slot 23 can also be designed differently according to actual needs. Please refer to Figures 7, 8, and 9.
  • sampling gap between the outer wall of the inner knife and the inner wall of the scabbard.
  • the sampling gap is configured to serve as a part of the airflow channel of the negative pressure device, providing a channel for the negative pressure device to use negative pressure to sample, using The negative pressure device can attract the cut tissue sample through the air flow channel and into the sample slot of the knife handle.
  • a radiofrequency surgical system which includes: a negative plate, and the radiofrequency scalpel described in any of the above embodiments; a radiofrequency circuit is formed between the negative plate, human tissue, and the radiofrequency scalpel.
  • an implementation mode means the specific features described in conjunction with the embodiment or example, Structures, materials or features are included in at least one embodiment or example of the invention.
  • schematic representations of the above terms do not necessarily refer to the same embodiment or example.
  • the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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  • Surgical Instruments (AREA)

Abstract

一种射频手术刀及系统，该手术刀包括：刀头、刀柄；其中，刀头包括：外刀（1）、内刀（2）、刀鞘（3），从刀头的远端到近端，外刀（1）的远端、内刀（2）的远端依次分布；外刀（1）、内刀（2）、刀鞘（3）三者同轴；内刀（2）与外刀（1）被配置为能够沿轴向进行相对移动或绕中心轴相对转动；内刀（2）包括：电极（21），电极（21）与射频发生装置相连；电极（21）覆盖内刀（2）的远端的截面或覆盖内刀槽口（23）的非径向截面槽边；内刀（2）内部或其内部通道被配置为能够与负压装置相连。通过相互配合的内刀（2）、外刀（1）实现切割，单次切割组织量大，且切割过程中出血量少。

Description

射频手术刀及系统 技术领域
本发明涉及医疗器械技术领域，尤其涉及一种射频手术刀及系统。
背景技术
现有乳房活检或其他活检装置采用机械切割的方式，其主要依赖于刀头设计结构和刀头的锋利程度，单次切割组织量少，需要多次切割取样，且切割过程伴随较大的出血现象。因此，现有技术手术时间较长，患者损伤较大。
发明内容
本发明提供一种射频手术刀及系统，以解决现有技术中单次切割组织量少、切割过程中伴随较大的出血的问题。
根据本发明的第一方面，提供一种射频手术刀，其包括：刀头、刀柄；其中，
所述刀头包括：外刀、内刀、刀鞘，从所述刀头的远端到近端，所述外刀的远端、所述内刀的远端依次分布；所述刀头的远端为所述刀头的远离所述刀柄的一端；
所述外刀、所述内刀、所述刀鞘三者同轴，且三者分别连接所述刀柄；
部分所述内刀穿设于所述刀鞘内，且所述内刀的远端探出所述刀鞘外，所述内刀的远端为所述内刀的远离所述刀柄的一端；
所述内刀与所述外刀被配置为能够沿轴向进行相对移动；
所述内刀包括：电极，所述电极与射频发生装置相连；所述电极覆盖所述内刀的远端的部分截面或全部截面；
所述内刀内部或其内部通道被配置为能够与负压装置相连。
较佳地，所述外刀包括：刀尖、外刀绝缘层、支撑杆；
所述外刀绝缘层设置于所述刀尖的近端，所述刀尖的近端为所述刀尖的靠近所述刀柄的一端；
所述支撑杆连接所述外刀绝缘层的近端，或穿过所述外刀绝缘层连接所述刀尖的近端，所述外刀绝缘层的近端为所述外刀绝缘层的远离所述刀尖的一端；
所述电极套设于所述支撑杆的外部；
所述内刀与所述外刀被配置为能够沿轴向进行相对移动具体为：所述电极、所述支撑杆被配置为能够沿轴向进行相对移动；
所述内刀包括：内刀绝缘层，所述内刀绝缘层包覆于所述内刀的除电极以外的表面。
较佳地，所述内刀的内壁与支撑杆的外壁之间留有取样间隙，所述取样间隙被配置为能够作为负压装置的气流通道的一部分。
根据本发明的第二方面，提供一种射频手术刀，其包括：刀头、刀柄；其中，
所述刀头包括：外刀、内刀、刀鞘；所述外刀的远端位于所述刀头的远端，所述刀头的远端为所述刀头的远离所述刀柄的一端，所述外刀的远端为所述外刀的远离所述刀柄的一端；
所述外刀、所述内刀、所述刀鞘三者同轴；
所述内刀、所述刀鞘分别连接所述刀柄，所述刀鞘的远端固定连接所述外刀；所述刀鞘的远端为所述刀鞘的远离所述刀柄的一端；
所述刀鞘的远端具有刀鞘槽口；
所述内刀的远端穿设于所述刀鞘内，所述内刀与所述刀鞘被配置为能够沿轴向进行相对移动，且相对移动过程中，所述内刀的远端能够进入所述刀鞘槽口内；
所述内刀包括：电极，所述电极与射频发生装置相连；所述电极覆盖所述内刀的远端的部分截面或全部截面；
所述内刀内部或其内部通道被配置为能够与负压装置相连。
较佳地，所述外刀包括：刀尖、外刀绝缘层；
所述外刀绝缘层设置于所述刀尖的近端，所述刀尖的近端为所述刀尖的靠近所述刀柄的一端；
所述刀鞘的远端固定连接所述外刀具体为：所述刀鞘的远端固定连接所述外刀绝缘层；
所述内刀包括：内刀绝缘层，所述内刀绝缘层包覆于所述内刀的除电极以外的表面。
较佳地，还包括：刀鞘绝缘层，所述刀鞘绝缘层包覆于所述刀鞘槽口的边沿以及所述刀鞘的内表面。
较佳地，所述内刀的外壁与所述刀鞘的内壁之间具有取样间隙，所述取样间隙被配置为能够作为负压装置的气流通道的一部分。
根据本发明的第三方面，提供一种射频手术刀，其包括：刀头、刀柄；其中，
所述刀头包括：外刀、内刀、刀鞘；所述外刀的远端位于所述刀头的远端，所述刀头的远端为所述刀头的远离所述刀柄的一端，所述外刀的远端为所述外刀的远离所述刀柄的一端；
所述外刀、所述内刀、所述刀鞘三者同轴；
所述内刀、所述刀鞘分别连接所述刀柄，所述刀鞘的远端固定连接所述外刀；所述刀鞘的远端为所述刀鞘的远离所述刀柄的一端；
所述内刀的远端穿设于所述刀鞘内；
所述内刀的远端具有内刀槽口，所述刀鞘的远端具有刀鞘槽口；
所述内刀包括：电极，所述电极与射频发生装置相连，所述电极覆盖所述内刀槽口的非径向截面槽边或部分非径向截面槽边，所述非径向截面槽边为不位于内刀的径向截面的槽边；
所述内刀与所述外刀被配置为能够绕所述刀头的中心轴进行相对转动，且相对转动过程中，所述电极能够进入所述刀鞘槽口内；
所述内刀内部或其内部通道被配置为能够与负压装置相连。
较佳地，所述外刀包括：刀尖、外刀绝缘层；
所述外刀绝缘层设置于所述刀尖的近端，所述刀尖的近端为所述刀尖的靠近所述刀柄的一端；
所述刀鞘的远端固定连接所述外刀具体为：所述刀鞘的远端固定连接所述外刀绝缘层；
所述内刀包括：支撑轴、内刀绝缘层；
所述内刀槽口设置于所述支撑轴的远端；
所述内刀绝缘层包覆于所述内刀的除电极以外的表面。
较佳地，还包括：刀鞘绝缘层，所述刀鞘绝缘层包覆于所述刀鞘槽口的边沿以及所述刀鞘的内表面。
较佳地，所述内刀的外壁与所述刀鞘的内壁之间具有取样间隙，所述取样间隙被配置为能够作为负压装置的气流通道的一部分。
根据本发明的第四方面，提供一种射频手术系统，其包括：负极板、上述任一项所述的射频手术刀；
所述负极板、所述射频手术刀分别为射频回路的一部分。
本发明提供的射频手术刀及系统，通过外刀和内刀组合，内刀和外刀能够相对移动或相对转动，内刀退刀，开启射频发生装置，内刀远端的电极开始工作，可以将组织吸附在电极附近(内刀和外刀之间)，然后内刀进刀，实现切割，切割阻力小，单次切割组织量大，且射频具有一定的凝血作用，切割过程中出血量少。
本发明的一可选方案中，内刀与支撑杆之间或内刀与刀鞘之间具有取样间隙，所述取样间隙被配置为能够作为负压装置的气流通道的一部分，可以将切割的组织通过负压吸引到样本槽中。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明的一实施例的射频手术刀的示意图；
图2为本发明的一实施例的射频手术刀的退刀的示意图及部分放大图；
图3为本发明的另一实施例的射频手术刀的示意图；
图4为本发明的另一实施例的射频手术刀的退刀的示意图及部分放大图；
图5为本发明的另一实施例的射频手术刀的示意图；
图6为本发明的另一实施例的射频手术刀的退刀的示意图及部分放大图；
图7为本发明的一实施例的内刀的示意图；
图8为本发明的另一实施例的内刀的示意图；
图9为本发明的另一实施例的内刀的示意图；
附图标记说明：
1-外刀，
11-刀尖，
12-外刀绝缘层，
13-支撑杆；
2-内刀，
21-电极，
22-内刀绝缘层，
221-第一内刀绝缘层，
222-第二内刀绝缘层，
23-内刀槽口，
24-支撑轴，
25-支撑层；
3-刀鞘，
31-刀鞘槽口，
32-刀鞘绝缘层。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明说明书的描述中，需要理解的是，术语“上部”、“下部”、“上端”、“下端”、“下表面”、“上表面”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明说明书的描述中，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一 个或者更多个该特征。
在本发明的描述中，“多个”的含义是多个，例如两个，三个，四个等，除非另有明确具体的限定。
在本发明说明书的描述中，除非另有明确的规定和限定，术语“连接”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接或可以互相通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
下面以具体地实施例对本发明的技术方案进行详细说明。下面这几个具体的实施例可以相互结合，对于相同或相似的概念或过程可能在某些实施例不再赘述。
一实施例中，提供一种射频手术刀，其包括：刀头、刀柄(图中未示出)；其中，刀头包括：外刀1、内刀2、刀鞘3，请参考图1。从刀头的远端到近端，外刀1的远端、内刀2的远端依次分布；刀头的远端为刀头的远离刀柄的一端。外刀1、内刀2、刀鞘3三者同轴，且三者分别连接刀柄。部分内刀2穿设于刀鞘3内，且内刀2的远端探出刀鞘3外，内刀2的远端为内刀2的远离刀柄的一端。内刀2与外刀1被配置为能够沿轴向进行相对移动；内刀包括：电极21，电极21与射频发生装置相连；电极21覆盖内刀2的远端的部分截面或全部截面，请参考图2。内刀内部或其内部通道被配置为能够与负压装置相连。
上述实施例的射频手术刀的工作原理为：将负极板根据手术目标区域放置在患者合适位置。内刀2相对于外刀1沿轴向方向运动，使得内刀2的电极22与外刀1接触，即内刀封闭状态，该状态下将射频手术刀插入手术目标区域，然后内刀2向远离外刀1方向运行，即退刀，退刀过程中或退刀一定距离后，负压装置开启，退刀到一定位置后，内刀2停止运行，此时组织会被吸附在电极22附近，内刀2向外刀1方向运行，运行过程中射频发生装置开启，电极22将射频能量传递到人体组织，即实现切割作用，内刀1运行，电极22再次与外刀1接触，即切割完成。
一实施例中，外刀包括：刀尖11、外刀绝缘层12、支撑杆13，请参 考图2。外刀绝缘层设12设置于刀尖11的近端，刀尖11的近端为刀尖11的靠近刀柄的一端；支撑杆13连接外刀绝缘层12的近端，或穿过12外刀绝缘层连接刀尖11的近端，外刀绝缘层13的近端为外刀绝缘层13的远离刀尖11的一端。
其中，电极21套设于支撑杆13的外部。进一步地，内刀2与外刀1被配置为能够沿轴向进行相对移动具体为：电极21、支撑杆13被配置为能够沿轴向进行相对移动。
另外，内刀包括：内刀绝缘层22，内刀绝缘层包覆于内刀的除电极以外的表面。
一实施例中，内刀绝缘层22包括两层，分别为：第一内刀绝缘层221、第二内刀绝缘层222。其中，第一内刀绝缘层221包覆于内刀2的外层，第二内刀绝缘层222包覆于内刀2的内层。内刀的外层即为内刀的远离支撑杆的一层，内刀的内层即为内刀的靠近支撑杆的一层。
一实施例中，内刀的内壁与支撑杆的外壁之间留有取样间隙，取样间隙被配置为能够作为负压装置的气流通道的一部分，为负压装置利用负压进行取样提供了通道，利用负压装置可以将切割后的组织样本通过该气流通道，吸引到刀柄的样本槽中。
另一实施例中，提供一种射频手术刀，其包括：刀头、刀柄(图中未示出)；其中，刀头包括：外刀1、内刀2、刀鞘3，请参考图3。外刀1的远端位于刀头的远端，刀头的远端为刀头的远离刀柄的一端，外刀的远端为外刀的远离刀柄的一端。外刀1、内刀2、刀鞘3三者同轴；内刀2、刀鞘3分别连接刀柄，刀鞘3的远端固定连接外刀1；刀鞘3的远端为刀鞘3的远离刀柄的一端。刀鞘3的远端具有刀鞘槽口31。内刀2的远端穿设于刀鞘3内，内刀2与刀鞘3被配置为能够沿轴向进行相对移动，且相对移动过程中，内刀2的远端能够进入刀鞘槽口31内。内刀2包括：电极21，电极21与射频发生装置相连；电极21覆盖内刀的远端的部分截面或全部截面，请参考图4。内刀内部或其内部通道被配置为能够与负压装置相连。
上述实施例的射频手术刀的工作原理为：将负极板根据手术目标区域放置在患者合适位置。内刀2相对于外刀1沿轴向方向运动，使得内刀2 的电极22与外刀1接触，即内刀封闭状态，该状态下将射频手术刀插入手术目标区域，然后内刀2向远离外刀1方向运行，即退刀，退刀过程中或退刀一定距离后，负压装置开启，退刀到一定位置后，内刀2停止运行，此时组织会被吸附在电极22附近，内刀2向外刀1方向运行，运行过程中射频发生装置开启，电极22将射频能量传递到人体组织，即实现切割作用，内刀1运行，电极22再次与外刀1接触，即切割完成。
一实施例中，外刀1包括：刀尖11、外刀绝缘层12，请参考图4。外刀绝缘层12设置于刀尖11的近端，刀尖11的近端为刀尖11的靠近刀柄的一端。进一步地，刀鞘3的远端固定连接外刀具体为：刀鞘3的远端固定连接外刀绝缘层12。
另外，内刀2包括：内刀绝缘层，内刀绝缘层包覆于内刀的除电极以外的表面。
一实施例中，内刀绝缘层包括两层，分别为：第一内刀绝缘层221、第二内刀绝缘层222。其中，第一内刀绝缘层221包覆于内刀2的外层，第二内刀绝缘层222包覆于内刀2的内层。内刀的外层即为内刀的靠近刀鞘3的一层，内刀的内层即为内刀的远离刀鞘3的一层。
一实施例中，射频手术刀还包括：刀鞘绝缘层32，刀鞘绝缘层32包覆于刀鞘槽口31的边沿以及刀鞘3的内表面，请参考图4。
一实施例中，刀鞘绝缘层32可以与外刀绝缘层12相连，两者也可以为一体化结构。
一实施例中，内刀2的外壁与刀鞘3的内壁之间具有取样间隙，取样间隙被配置为能够作为负压装置的气流通道的一部分，为负压装置利用负压进行取样提供了通道，利用负压装置可以将切割后的组织样本通过该气流通道，吸引到刀柄的样本槽中。
另一实施例中，提供一种射频手术刀，其包括：刀头、刀柄(图中未示出)；其中，刀头包括：外刀1、内刀2、刀鞘3，请参考图5。外刀1的远端位于刀头的远端，刀头的远端为刀头的远离刀柄的一端，外刀1的远端为外刀的远离刀柄的一端。外刀1、内刀2、刀鞘3三者同轴。内刀2、刀鞘3分别连接刀柄，刀鞘3的远端固定连接外刀1；刀鞘3的远端为刀鞘3的远离刀柄的一端。内刀2的远端穿设于刀鞘3内。内刀2的远端具 有内刀槽口23，刀鞘3的远端具有刀鞘槽口31。内刀2包括：电极21，电极21与射频发生装置相连，电极21覆盖内刀槽口的非径向截面槽边或部分非径向截面槽边，非径向截面槽边为不位于内刀的径向截面的槽边，请参考图6。内刀2与外刀1被配置为能够绕刀头的中心轴进行相对转动，且相对转动过程中，电极21能够进入刀鞘槽口31内。
上述实施例的射频手术刀的工作原理为：将负极板根据手术目标区域放置在患者合适位置。内刀2相对外刀1转动，使得刀鞘3的刀鞘槽口31与内刀2的内刀槽口23错开，即刀鞘槽口31被内刀2的表面基本完全遮挡，即内刀封闭状态，该状态下将射频手术刀插入手术目标区域，然后内刀2再次转动，即退刀，退刀到使得电极21位于刀鞘槽口的一侧边沿位置且内刀槽口23与刀鞘槽口31相对的位置，负压装置开启，此时组织会被吸附在内刀槽口23中即电极21附近，内刀2转动，使得电极21经过刀鞘槽口31，向刀鞘槽口31的另一边沿的方向运行，运行过程中射频发生装置开启，电极21将射频能量传递到人体组织，即实现切割作用。电极21转动到刀鞘槽口31的另一边沿位置，即刀鞘槽口31被内刀表面基本完全遮挡的位置，则切割完成。
一实施例中，外刀1包括：刀尖11、外刀绝缘层12，请参考图6。外刀绝缘层12设置于刀尖11的近端，刀尖11的近端为刀尖11的靠近刀柄的一端。进一步地，刀鞘3的远端固定连接外刀1具体为：刀鞘3的远端固定连接外刀绝缘层12。
另外，内刀2包括：支撑轴24，请参考图6；内刀槽口23设置于支撑轴24的远端。
一实施例中，射频手术刀还包括：刀鞘绝缘层32，刀鞘绝缘层32包覆于刀鞘槽口31的边沿以及刀鞘3的内表面，请参考图6。
一实施例中，内刀槽口的靠近外刀的一侧还设置有支撑层25，用于支撑电极21，此时电极21的两端分别固定在内刀槽口的两侧的支撑轴24和支撑层25上，请参考图7。
一实施例中，支撑轴24、支撑层25采用绝缘材质制成，或外面包裹有绝缘层，为绝缘体。
不同实施例中，也可不包括支撑层，电极21可以直接贴附在内刀槽 口的非径向截面槽边，请参考图8、图9。
当电极21直接贴附在内刀槽口的非径向截面槽边时，还可以包括：内刀绝缘层，内刀绝缘层包覆于内刀2的除电极以外的表面。
一实施例中，电极21可以为直杆形结构，请参考图7；也可以为一段直杆加一段弯管，请参考图8；也可以为弯杆形结构，请参考图9。只要能够完成切割作用即可。
另外，内刀槽口23的形状也可以根据实际需要进行不同的设计，请参考图7、图8、图9。
一实施例中，内刀的外壁与刀鞘的内壁之间具有取样间隙，取样间隙被配置为能够作为负压装置的气流通道的一部分，为负压装置利用负压进行取样提供了通道，利用负压装置可以将切割后的组织样本通过该气流通道，吸引到刀柄的样本槽中。
另一实施例中，提供一种射频手术系统，其包括：负极板、上述任一实施例所述的射频手术刀；负极板、人体组织、射频手术刀之间形成射频回路。
在本说明书的描述中，参考术语“一种实施方式”、“一种实施例”、“具体实施过程”、“一种举例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (12)

  1. 一种射频手术刀，其特征在于，包括：刀头、刀柄；其中，
    所述刀头包括：外刀、内刀、刀鞘，从所述刀头的远端到近端，所述外刀的远端、所述内刀的远端依次分布；所述刀头的远端为所述刀头的远离所述刀柄的一端；
    所述外刀、所述内刀、所述刀鞘三者同轴，且三者分别连接所述刀柄；
    部分所述内刀穿设于所述刀鞘内，且所述内刀的远端探出所述刀鞘外，所述内刀的远端为所述内刀的远离所述刀柄的一端；
    所述内刀与所述外刀被配置为能够沿轴向进行相对移动；
    所述内刀包括：电极，所述电极与射频发生装置相连；所述电极覆盖所述内刀的远端的部分截面或全部截面；
    所述内刀内部或其内部通道被配置为能够与负压装置相连。
  2. 根据权利要求1所述的射频手术刀，其特征在于，所述外刀包括：刀尖、外刀绝缘层、支撑杆；
    所述外刀绝缘层设置于所述刀尖的近端，所述刀尖的近端为所述刀尖的靠近所述刀柄的一端；
    所述支撑杆连接所述外刀绝缘层的近端，或穿过所述外刀绝缘层连接所述刀尖的近端，所述外刀绝缘层的近端为所述外刀绝缘层的远离所述刀尖的一端；
    所述电极套设于所述支撑杆的外部；
    所述内刀与所述外刀被配置为能够沿轴向进行相对移动具体为：所述电极、所述支撑杆被配置为能够沿轴向进行相对移动；
    所述内刀包括：内刀绝缘层，所述内刀绝缘层包覆于所述内刀的除电极以外的表面。
  3. 根据权利要求2所述的射频手术刀，其特征在于，所述内刀的内壁与支撑杆的外壁之间留有取样间隙，所述取样间隙被配置为能够作为所述负压装置的气流通道的一部分。
  4. 一种射频手术刀，其特征在于，包括：刀头、刀柄；其中，
    所述刀头包括：外刀、内刀、刀鞘；所述外刀的远端位于所述刀头的远端，所述刀头的远端为所述刀头的远离所述刀柄的一端，所述外刀的远端为 所述外刀的远离所述刀柄的一端；
    所述外刀、所述内刀、所述刀鞘三者同轴；
    所述内刀、所述刀鞘分别连接所述刀柄，所述刀鞘的远端固定连接所述外刀；所述刀鞘的远端为所述刀鞘的远离所述刀柄的一端；
    所述刀鞘的远端具有刀鞘槽口；
    所述内刀的远端穿设于所述刀鞘内，所述内刀与所述刀鞘被配置为能够沿轴向进行相对移动，且相对移动过程中，所述内刀的远端能够进入所述刀鞘槽口内；
    所述内刀包括：电极，所述电极与射频发生装置相连；所述电极覆盖所述内刀的远端的部分截面或全部截面；
    所述内刀内部或其内部通道被配置为能够与负压装置相连。
  5. 根据权利要求4所述的射频手术刀，其特征在于，所述外刀包括：刀尖、外刀绝缘层；
    所述外刀绝缘层设置于所述刀尖的近端，所述刀尖的近端为所述刀尖的靠近所述刀柄的一端；
    所述刀鞘的远端固定连接所述外刀具体为：所述刀鞘的远端固定连接所述外刀绝缘层；
    所述内刀包括：内刀绝缘层，所述内刀绝缘层包覆于所述内刀的除电极以外的表面。
  6. 根据权利要求5所述的射频手术刀，其特征在于，还包括：刀鞘绝缘层，所述刀鞘绝缘层包覆于所述刀鞘槽口的边沿以及所述刀鞘的内表面。
  7. 根据权利要求4至6任一项所述的射频手术刀，其特征在于，所述内刀的外壁与所述刀鞘的内壁之间具有取样间隙，所述取样间隙被配置为能够作为所述负压装置的气流通道的一部分。
  8. 一种射频手术刀，其特征在于，包括：刀头、刀柄；其中，
    所述刀头包括：外刀、内刀、刀鞘；所述外刀的远端位于所述刀头的远端，所述刀头的远端为所述刀头的远离所述刀柄的一端，所述外刀的远端为所述外刀的远离所述刀柄的一端；
    所述外刀、所述内刀、所述刀鞘三者同轴；
    所述内刀、所述刀鞘分别连接所述刀柄，所述刀鞘的远端固定连接所述 外刀；所述刀鞘的远端为所述刀鞘的远离所述刀柄的一端；
    所述内刀的远端穿设于所述刀鞘内；
    所述内刀的远端具有内刀槽口，所述刀鞘的远端具有刀鞘槽口；
    所述内刀包括：电极，所述电极与射频发生装置相连，所述电极覆盖所述内刀槽口的非径向截面槽边或部分非径向截面槽边，所述非径向截面槽边为不位于内刀的径向截面的槽边；
    所述内刀与所述外刀被配置为能够绕所述刀头的中心轴进行相对转动，且相对转动过程中，所述电极能够进入所述刀鞘槽口内；
    所述内刀内部或其内部通道被配置为能够与负压装置相连。
  9. 根据权利要求8所述的射频手术刀，其特征在于，所述外刀包括：刀尖、外刀绝缘层；
    所述外刀绝缘层设置于所述刀尖的近端，所述刀尖的近端为所述刀尖的靠近所述刀柄的一端；
    所述刀鞘的远端固定连接所述外刀具体为：所述刀鞘的远端固定连接所述外刀绝缘层；
    所述内刀包括：支撑轴、内刀绝缘层；
    所述内刀槽口设置于所述支撑轴的远端；
    所述内刀绝缘层包覆于所述内刀的除电极以外的表面。
  10. 根据权利要求9所述的射频手术刀，其特征在于，还包括：刀鞘绝缘层，所述刀鞘绝缘层包覆于所述刀鞘槽口的边沿以及所述刀鞘的内表面。
  11. 根据权利要求8至10任一项所述的射频手术刀，其特征在于，所述内刀的外壁与所述刀鞘的内壁之间具有取样间隙，所述取样间隙被配置为能够作为负压装置的气流通道的一部分。
  12. 一种射频手术系统，其特征在于，包括：负极板、如权利要求1至11任一项所述的射频手术刀；
    所述负极板、所述射频手术刀分别为射频回路的一部分。
PCT/CN2022/124682 2022-06-17 2022-10-11 射频手术刀及系统 WO2023240855A1 (zh)

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