CN215273274U - Thermal ablation system - Google Patents

Abstract

The application provides a thermal ablation system, including sheath, ablation electrode, handle device and starting drive. The ablation electrode is matched with the sheath tube and has an opening state and a contraction state; the handle device is arranged on the sheath tube, is connected with the ablation electrode and is used for driving the ablation electrode to switch between an opening state and a contraction state; the starting device is connected with the handle device or the ablation electrode and is used for enabling the ablation electrode and the radio-frequency current emission device to form a passage when the handle device drives the ablation electrode to move to the open state, so that the radio-frequency current emission device emits radio-frequency current to the ablation electrode. Reduce the operation difficulty and improve the operation efficiency.

Description

Thermal ablation system

Technical Field

The utility model relates to the field of medical equipment, particularly, relate to a heat ablation system.

Background

In recent years, the use of radiofrequency fusion techniques for the treatment of asthma has become increasingly recognized by physicians and patients. The distal end of the bronchial thermoplasty catheter is provided with a radio frequency electrode, and the heat is utilized to thin the airway smooth muscle proliferated on the airway wall, so that the contraction amplitude of the airway during asthma attack is reduced, and the frequency and the severity of asthma attack are reduced. The handle of the product in the field controls the front electrode to expand and contract at present, and the pedal controls the input of radio frequency current. This requires the operator to control the electrode catheter insertion depth with his hands while controlling the front electrode expansion and contraction with his hands and feet, and to control the rf current with the foot control to match the front electrode expansion and contraction for rf input. The operation is inconvenient, the attention of an operator is dispersed back and forth, and the misoperation is easy. And the long time of the bronchial thermal forming operation easily causes fatigue of operators to influence the operation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heat ablation system, it can reduce the operation degree of difficulty for art person's attention is more concentrated, and art person is indefatigable, is difficult for the maloperation, and the operation success rate is high.

The embodiment of the utility model is realized like this:

the utility model provides a heat ablation system, include:

a sheath tube;

the ablation electrode is matched with the sheath tube and has an opening state and a contraction state;

the handle device is arranged on the sheath tube and is connected with the ablation electrode and used for driving the ablation electrode to switch between an opening state and a contraction state;

and the starting device is connected with the handle device or the ablation electrode and is used for enabling the ablation electrode and the radio-frequency current emission device to form a passage when the handle device drives the ablation electrode to move to the open state so as to enable the radio-frequency current emission device to emit radio-frequency current to the ablation electrode.

In an alternative embodiment, the activation device is configured as a push switch or a knob switch, which is connected to the sheath tube.

In an alternative embodiment, the activation means is provided as a touch key.

In an alternative embodiment, the handle device comprises a sliding fit of a base member and a sliding member, the base member being connected to the sheath; the starting device is set as a travel switch; the travel switch comprises a moving part and a triggering part, the moving part is connected with the sliding part, the triggering part is connected with the base part, and the moving part is used for moving relative to the sheath under the driving of the handle device so as to enable the moving part to be electrically connected with the triggering part, and therefore the radio-frequency current emitting device emits radio-frequency current to the ablation electrode.

In an alternative embodiment, the base member is provided with a sliding groove, the movable member is in sliding fit with the sliding groove, and the trigger member is arranged in the sliding groove and located on a sliding path of the movable member.

In an alternative embodiment, an elastic member is provided between the trigger member and the base member to reduce the collision force of the movable member and the trigger member.

In an alternative embodiment, the elastic member is provided as a spring, a rubber member, or a resilient sheet.

In an alternative embodiment, the starting device is configured as a pressure sensor, the pressure sensor is configured to be in communication connection with the radio frequency current emission device, the pressure sensor is disposed on the ablation electrode, the pressure sensor is configured to detect a pressure applied to the tissue by the ablation electrode, transmit the pressure to the radio frequency current emission device, and start the radio frequency current emission device when the pressure is greater than a preset pressure threshold in the radio frequency current emission device, so that the radio frequency current emission device emits the radio frequency current to the ablation electrode.

In an alternative embodiment, the ablation electrode comprises a plurality of electrode wires arranged at intervals in the circumferential direction of the sheath, and each electrode wire is provided with a pressure sensor.

In an alternative embodiment, the sheath includes first and second spaced apart connectors to which the proximal and distal ends of the ablation electrode are connected, respectively, the first connector being capable of moving toward and away from the second connector to actuate the ablation electrode to expand or contract.

The embodiment of the utility model provides a beneficial effect is:

in summary, the present embodiments provide a thermal ablation system that can be actuated to expand or contract an ablation electrode via a handle device. And be provided with starting drive on handle device or ablation electrode, starting drive and handle device are linkage structure, and when the art person held handle device and operated, can reflect the state that melts the electrode, the art person can utilize the state that the starting drive was gone correspondingly to the hand according to handle device's position, and does not need the cooperation of art person's trick to use, the art person attention concentrate on the hand can, be difficult for the decentralized attention, reduce the operation degree of difficulty, reduce the maloperation probability to improve the operation success rate. In actual operation, in an initial state, the ablation electrode is set to be in a contraction state, the starting device is not triggered, the radio-frequency current emission device and the ablation electrode are in a power-off state, at the moment, the ablation electrode can be conveyed to a tissue position to be operated by using equipment such as an endoscope and the like, then, an operator holds the handle device, the ablation electrode is opened by using the handle device, and when the ablation electrode is in an opening state and is in close contact with the tissue, at the moment, the starting device is driven by the handle device or manually starts the starting device, so that the starting device is switched to a triggering state in which the radio-frequency current emission device and the ablation electrode are electrically connected, namely the radio-frequency current emission device and the ablation electrode form a passage, the radio-frequency current emission device automatically emits radio-frequency current to the ablation electrode, and the tissue is thermally ablated by the ablation electrode. The ablation operation has low difficulty, high automation degree and high operation efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic diagram of a thermal ablation system according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a portion of a thermal ablation system according to an embodiment of the present invention;

fig. 3 is a schematic view of a matching structure of the handle device and the starting device according to the embodiment of the present invention.

Icon:

100-sheath; 110-a first connector; 120-a second connector; 200-an ablation electrode; 300-a handle device; 310-a base member; 311-a chute; 320-a slide; 330-an elastic member; 340-a pull cable; 400-starting means; 410-a movable member; 420-trigger.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

At present, when the thermal ablation surgical instrument is used, a pedal type mechanical control switch special for controlling the on-off of electrodes is arranged at the bottom of a cabinet body, when the electrodes are conveyed to a tissue to be ablated by utilizing instruments such as an endoscope, medical workers use feet to pedal the pedals, a radio frequency transmitting device is started, and therefore radio frequency current is transmitted to the electrodes, and the tissue in contact with the electrodes is subjected to thermal ablation treatment by utilizing the electrodes. When the existing thermal ablation surgical instrument is operated, hands and feet of medical workers are used together, the operation difficulty is high, the labor intensity of the medical workers is improved, and the success rate of the operation is reduced.

Referring to fig. 1-3, in view of this, designers have designed a thermal ablation system, in which the rf current emitter is automatically turned on when medical staff control the ablation electrode 200 to open, so that the medical staff do not need to use both hands and feet, thereby reducing the operation difficulty, reducing the labor intensity, and improving the operation efficiency.

Referring to fig. 1 and 2, in the present embodiment, the thermal ablation system includes a sheath 100, an ablation electrode 200, a handle device 300, and an actuating device 400. The ablation electrode 200 is matched with the sheath 100, and the ablation electrode 200 has an opening state and a contraction state; the handle device 300 is arranged on the sheath tube 100, and the handle device 300 is connected with the ablation electrode 200 and used for driving the ablation electrode 200 to switch between an expanded state and a contracted state; the actuating device 400 is connected to the handle device 300 or the ablation electrode 200, and the actuating device 400 is used for enabling the ablation electrode 200 to form a passage with a radio frequency current transmitting device (not shown) when the handle device 300 drives the ablation electrode 200 to move to the open state, so that the radio frequency current transmitting device transmits radio frequency current to the ablation electrode 200.

The thermal ablation system provided by the present embodiment can drive the ablation electrode 200 to expand or contract through the handle device 300. And be provided with starting drive 400 on handle device 300 or ablation electrode 200, starting drive 400 and handle device 300 are linkage structure, when the operator grips handle device 300 and operates, can reflect the state of ablation electrode 200, the operator can utilize the state that the hand correspondingly goes to change starting drive 400 according to handle device 300's position, and do not need the cooperation of operator's hand and foot to use, the operator attention concentrate on the hand can, be difficult for dispersing the attention, reduce the operation degree of difficulty, reduce the maloperation probability, thereby improve the operation success rate. In operation, in an initial state, the ablation electrode 200 is set to a contracted state, the activation device 400 is not triggered, and the radio frequency current emission device and the ablation electrode 200 are in a power-off state, at this time, the ablation electrode 200 may be delivered to the tissue site to be operated upon using an endoscope or the like, then, the operator holds the handle device 300, and opens the ablation electrode 200 using the handle device 300, and when the ablation electrode 200 is in the opened state and the ablation electrode 200 is in close contact with the tissue, at this time, the starting device 400 is driven by the handle device 300 or the starting device 400 is manually started, so that the starting device 400 is switched to the trigger state in which the radio frequency current emission device and the ablation electrode 200 are electrically connected, that is, the radio frequency current emission device and the ablation electrode 200 form a passage, so that the radio frequency current emission device automatically emits radio frequency current to the ablation electrode 200, and the tissue is thermally ablated by the ablation electrode 200. The ablation operation has low difficulty, high automation degree and high operation efficiency.

It should be appreciated that when the ablation electrode 200 is switched from the expanded state to the contracted state by the handle device 300 after the operation is completed, the starting device 400 can be automatically or manually restored to the initial state, the radiofrequency current transmitting device is disconnected from the ablation electrode 200, no radiofrequency current flows through the ablation electrode 200, the safety is improved, and the energy is saved.

In this embodiment, the starting device 400 may be configured as a pressing switch, a knob switch or a touch button, and the pressing switch, the knob switch or the touch button is mounted on the handle device 300. That is, in the actual operation process, when the handle device 300 drives the ablation electrode 200 to move to the expanded state, the ablation electrode 200 and the radio frequency current emitting device are in the on state by manually operating the pressing switch key, the knob switch key or the touch key, and the radio frequency current emitting device directly emits the radio frequency current to the ablation electrode 200.

In other embodiments, the actuating device 400 may be configured to be coupled with the handle device 300, that is, when the handle device 300 drives the ablation electrode 200 to move to the open state, the actuating device 400 is actively triggered to conduct the ablation electrode 200 and the radiofrequency current emitting device, so that the radiofrequency current emitting device emits radiofrequency current to the ablation electrode 200.

Referring to fig. 3, optionally, the starting device 400 is configured as a travel switch, the travel switch includes a movable element 410 and a trigger element 420, the movable element 410 and the trigger element 420 are both disposed on the handle device 300, the movable element 410 and the trigger element 420 can be electrically connected to the ablation electrode 200 and the radio frequency current emission device through wires, respectively, the movable element 410 and the trigger element 420 can move relatively, and when the ablation electrode 200 is driven by the handle device 300 to be in the open state, the movable element 410 contacts with the trigger element 420, and the two are electrically connected, so as to conduct the ablation electrode 200 and the radio frequency current emission device. It should be understood that when the handle assembly 300 is operated to retract the ablation electrode 200 after the procedure is completed, the moveable member 410 is disengaged from the trigger member 420 and the ablation electrode 200 and the radiofrequency current emission device are disconnected.

It should be noted that the movable member 410 and the triggering member 420 are both metal members, for example, both metal sheets.

In this embodiment, the handle device 300 may optionally comprise a base 310 and a sliding member 320, wherein the base 310 is connected to the sheath 100, and the sliding member 320 is slidably engaged with the base 310. The proximal end of the ablation electrode 200 is connected with the sheath 100, the sliding member 320 is connected with the distal end of the ablation electrode 200 through the pulling cable 340, and when the ablation electrode is operated, the base member 310 is held, the sliding member 320 is driven to slide relative to the base member 310, and the distal end of the ablation electrode 200 can be driven to be close to or far away from the proximal end through the pulling cable 340, so that the ablation electrode 200 is switched between the contraction state and the expansion state.

Further, the base member 310 is provided with a sliding slot 311, the movable member 410 is connected with the sliding member 320, the movable member 410 is slidably engaged with the sliding slot 311 in the extending direction of the flower and grass, the trigger member 420 is provided in the sliding slot 311, and the trigger member 420 is located on the sliding path of the movable member 410. When the sliding member 320 slides relative to the base member 310, the movable member 410 is driven to move relative to the trigger member 420, so that the movable member 410 contacts with the trigger member 420, and the two are in a conducting state.

Further, an elastic member 330 is disposed in the sliding slot 311, and the triggering member 420 is connected to the elastic member 330 to reduce the collision force between the movable member 410 and the triggering member 420. That is, when the movable member 410 moves close to the trigger member 420, the movable member 410 and the trigger member 420 elastically collide with each other, which can reduce the collision force and reduce the probability of damage to the movable member 410 and the trigger member 420, compared to a rigid collision.

It should be understood that the elastic member 330 is provided as a spring, or a rubber member.

In other embodiments, the activation device 400 is configured as a pressure sensor for communicating with the rf current emitting device, the pressure sensor is disposed on the ablation electrode 200, the pressure sensor is configured to detect the pressure applied to the tissue by the ablation electrode 200 and transmit the pressure to the rf current emitting device, and the rf current emitting device is activated when the pressure is greater than a preset pressure threshold in the rf current emitting device, so that the rf current emitting device emits the rf current to the ablation electrode 200.

Further, the number of the pressure sensors may be provided in plural. A plurality of pressure sensors are each connected to the ablation electrode 200.

In this embodiment, optionally, the ablation electrode 200 includes a plurality of electrode wires arranged at intervals in the circumferential direction of the sheath 100, the proximal ends of the plurality of electrode wires are collected to form the proximal end of the ablation electrode 200, and the distal ends of the plurality of electrode wires are collected to form the distal end of the ablation electrode 200. Each electrode wire is provided with a pressure sensor. When the pressure sensors monitor that the pressure applied to the tissue by the electrode wire meets the set pressure, the radio-frequency current transmitting device is started.

In addition, in other embodiments, the plurality of electrode wires of the ablation electrode 200 may be provided as memory alloy wires, and when the ablation electrode 200 is in the contracted state, the ablation electrode 200 is received in the lumen of the sheath 100; the ablation electrode 200 can be extended from the distal end of the sheath 100, and at this time, the sheath 100 loses the constraint of the ablation electrode 200, and the ablation electrode 200 can automatically expand to the periphery to be in the expanded state.

Obviously, in other embodiments, the expanded state of the ablation electrode 200 can also be understood as the balloon-inflated state, depending on the structural form of the ablation electrode 200. The ablation electrode 200 may be received in the sheath 100 or extend out of the distal end of the sheath 100.

In this embodiment, optionally, the sheath 100 includes a first connector 110 and a second connector 120 that are disposed at an interval, the proximal end and the distal end of the ablation electrode 200 are respectively connected to the first connector 110 and the second connector 120, the pulling cable 340 passes through the first connector and then is connected to the second connector 120, and the pulling cable 340 is slidably engaged with the first connector 110, so that the pulling cable 340 can drive the second connector 120 to approach or depart from the first connector 110, thereby driving the ablation electrode 200 to open or contract.

The thermal ablation system that this embodiment provided, handle device 300 and starting drive 400 are all through hand operation, and the two can set up to linkage structure to reduce the operation degree of difficulty, reduce operation intensity of labour, the operator is focused on more in the operation process, improves operation quality and efficiency.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A thermal ablation system, comprising:

a sheath tube;

the ablation electrode is matched with the sheath tube and has an opening state and a contraction state;

the handle device is arranged on the sheath tube, is connected with the ablation electrode and is used for driving the ablation electrode to be switched between the expanded state and the contracted state;

and the starting device is connected with the handle device or the ablation electrode and is used for enabling the ablation electrode and the radio-frequency current emission device to form a passage when the handle device drives the ablation electrode to move to the open state, so that the radio-frequency current emission device emits radio-frequency current to the ablation electrode.

2. The thermal ablation system of claim 1, wherein:

the starting device is set to be a pressing type switch key or a knob type switch key, and the pressing type switch key or the knob type switch key is connected with the handle device.

3. The thermal ablation system of claim 1, wherein:

the starting device is set as a touch key.

4. The thermal ablation system of claim 1, wherein:

the handle device comprises a base part and a sliding part which are matched in a sliding way, and the base part is connected with the sheath; the starting device is set as a travel switch; the travel switch comprises a movable piece and a trigger piece, the movable piece is connected with the sliding piece, the trigger piece is connected with the base piece, and the movable piece is used for moving relative to the sheath under the driving of the handle device so as to enable the movable piece to be electrically connected with the trigger piece, and therefore the radio-frequency current emitting device emits radio-frequency current to the ablation electrode.

5. The thermal ablation system of claim 4, wherein:

the base member is provided with a sliding groove, the moving member is in sliding fit with the sliding groove, and the trigger member is arranged in the sliding groove and located on a sliding path of the moving member.

6. The thermal ablation system of claim 5, wherein:

an elastic piece is arranged between the trigger piece and the base piece so as to reduce the collision force of the movable piece and the trigger piece.

7. The thermal ablation system of claim 6, wherein:

the elastic piece is a spring, a rubber piece or an elastic piece.

8. The thermal ablation system of claim 1, wherein:

the starting device is set as a pressure sensor, the pressure sensor is used for being in communication connection with the radio frequency current emission device, the pressure sensor is arranged on the ablation electrode and used for detecting the pressure applied to the tissue by the ablation electrode and transmitting the pressure to the radio frequency current emission device, and the radio frequency current emission device is started when the pressure is greater than a preset pressure threshold value in the radio frequency current emission device, so that the radio frequency current emission device emits radio frequency current to the ablation electrode.

9. The thermal ablation system of claim 8, wherein:

the ablation electrode comprises a plurality of electrode wires which are arranged at intervals in the circumferential direction of the sheath tube, and each electrode wire is provided with the pressure sensor.

10. The thermal ablation system of claim 1, wherein:

the sheath comprises a first connecting piece and a second connecting piece which are arranged at intervals, the near end and the far end of the ablation electrode are respectively connected with the first connecting piece and the second connecting piece, and the first connecting piece can be close to or far away from the second connecting piece, so that the ablation electrode is driven to expand or contract.

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