CN217488703U

CN217488703U - Active puncture biopsy device

Info

Publication number: CN217488703U
Application number: CN202220282581.2U
Authority: CN
Inventors: 唐淑君; 郭静宜
Original assignee: Shanghai Meiweida Medical Technology Co ltd
Current assignee: Shanghai Meiweida Medical Technology Co ltd
Priority date: 2022-02-11
Filing date: 2022-02-11
Publication date: 2022-09-27
Anticipated expiration: 2032-02-11

Abstract

The utility model relates to an active puncture biopsy device, which comprises a radio frequency power generator, an outer sleeve electrode, an inner tube electrode and a plate electrode, wherein three ablation loops are respectively formed among the outer sleeve electrode, the inner tube electrode and the plate electrode through the radio frequency power generator; the radio frequency power generator controls the on-off and switching of the three ablation loops; the outer sleeve electrode forms a puncture sleeve, an electrode insulation area is formed by the part of the inner tube electrode, which is contacted with the outer sleeve electrode, and a sampling point ablation area is formed by the part of the inner tube electrode, which extends out of the outer sleeve electrode; and the tube wall of the outer sleeve electrode forms a needle passage ablation area. The active aspiration biopsy device effectively solves the bleeding probability of the needle channel and the sampling point, melts the needle channel and the sampling point, reduces the risk of needle channel planting, and meanwhile, through controlling the on-off and switching of the first melting loop, the second melting loop and the third melting loop, the precise melting can be realized, the device is suitable for melting under different conditions, and the compatibility is stronger.

Description

Active puncture biopsy device

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to active aspiration biopsy device.

Background

The existing needle biopsy tools are all passive products, although manufacturers who are used as the needle biopsy tools have made electrodes thinner and thinner at present, the needle biopsy operation is invasive, and a sampling point of a patient and a needle channel of a needle are easy to bleed in the operation process.

The existing passive puncture biopsy tool cannot stop bleeding for a sampling point and a needle channel due to the limitation of the technology, and is very easy to bring a focus of a tumor tissue area to a non-tumor area to cause puncture planting in the using process, such as the situation that the sampling point is a tumor tissue. Although the probability of occurrence is not high, once it occurs, the effect on the patient is fatal. The existing ablation equipment is adopted to perform hemostasis ablation on the bleeding point after puncture, and the puncture sleeve needs to be taken out before ablation, so that the implantation risk cannot be avoided even if ablation is performed.

Meanwhile, when the existing ablation equipment is used for ablation, the existing ablation equipment cannot take into account the ablation hemostasis of a sampling point and a puncture needle channel at the same time, and when two sets of ablation equipment are used for ablation, the problem of inconvenient operation exists.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defects of the prior art, the utility model provides an active aspiration biopsy device that the security is high, be convenient for operation, compatibility are strong and adaptability is good.

In order to solve the above technical problem, the active biopsy device of the present invention has the following features:

the active puncture biopsy device is mainly characterized by comprising a radio frequency power generator, an outer sleeve electrode, an inner tube electrode and an electrode plate;

the outer sleeve electrode is connected with a first control end of the radio frequency power generator, the inner tube electrode is connected with a second control end of the radio frequency power generator, and the electrode plate is connected with a third control end of the radio frequency power generator;

a first ablation loop, a second ablation loop and a third ablation loop are respectively formed between the outer sleeve electrode and the electrode plate, between the inner tube electrode and the electrode plate and between the outer sleeve electrode and the inner tube electrode through the radio frequency power generator;

the radio frequency power generator controls the on-off and switching of the first ablation loop, the second ablation loop and the third ablation loop;

the outer sleeve electrode can form a puncture sleeve, and the inner tube electrode is detachably inserted into the outer sleeve electrode and extends out of the front end of the outer sleeve electrode for a preset distance;

forming an electrode insulation area by the part of the inner tube electrode, which is in contact with the outer sleeve electrode, and forming a sampling point ablation area by the part of the inner tube electrode, which extends out of the outer sleeve electrode; and a needle passage ablation area is formed by the tube wall of the outer sleeve electrode.

The active biopsy device described above, wherein the active biopsy device further comprises a biopsy tool movably disposed in the outer cannula electrode.

The active aspiration biopsy device described above, wherein the biopsy tool is a disposable biopsy brush or a disposable biopsy forceps.

The active puncture biopsy device is characterized in that the outer sleeve electrode is connected with the first control end of the radio frequency power generator in a pluggable mode through a first connecting wire, the inner tube electrode is connected with the second control end of the radio frequency power generator in a pluggable mode through a second connecting wire, and the electrode plate is connected with the third control end of the radio frequency power generator in a pluggable mode through a third connecting wire.

In the active biopsy device, the electrode plate is a negative electrode plate.

In the active biopsy device, when the third ablation loop formed between the outer sleeve electrode and the inner tube electrode is switched to be conducted, the inner tube electrode needs to be inserted into the outer sleeve electrode, and the inner tube electrode and the outer sleeve electrode are fixedly connected through a structural key.

The active aspiration biopsy device comprises a radio frequency ablation module, a loop on-off switching control module and a human-computer interaction module, wherein the radio frequency power generator further comprises the radio frequency ablation module;

the loop on-off switching control module is respectively connected with a first control end, a second control end, a third control end and a radio frequency ablation module in the radio frequency power generator;

the human-computer interaction module is respectively connected with the radio frequency ablation module and the loop on-off switching control module.

In the active biopsy puncture device, the maximum output power of the rf ablation module does not exceed 200W, and the rf ablation module outputs rf signals in 400-500KHZ frequency range.

The utility model discloses an active aspiration biopsy device's beneficial effect:

the method comprises the steps that a radio frequency power generator, an outer sleeve electrode, an inner tube electrode and an electrode plate are arranged, wherein a first ablation loop, a second ablation loop and a third ablation loop are respectively formed among the outer sleeve electrode, the inner tube electrode and the electrode plate through the radio frequency power generator, meanwhile, an electrode insulation area is formed by a part, in the inner tube electrode, in contact with the outer sleeve electrode, and a sampling point ablation area is formed by a part, in the inner tube electrode, extending out of the outer sleeve electrode; and a needle channel ablation area is formed by the tube wall of the outer sleeve electrode, so that after the puncture biopsy sampling is completed through the outer sleeve electrode, the needle channel ablation is realized by using the outer sleeve electrode, and the ablation is realized on a sampling point by using the inner tube electrode. Effectively solving the bleeding of the needle channel and the sampling point, reducing the occurrence probability of the needle channel bleeding and the sampling point bleeding and reducing the risk of needle channel planting.

And simultaneously, the utility model discloses in, control through the radio frequency power generator first melt the break-make and the switching that return circuit, second melt return circuit and third melt the return circuit, can select the point of melting pertinence ground, realize accurate melting, satisfy the operation demand of performing the operation, just can satisfy the melting that allows the position of attached extra plate electrode and not allow the melting at the position of attached extra plate electrode through a set of equipment, the compatibility is stronger, and adaptability is good.

Drawings

The conception, the specific structure and the technical effects produced by the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.

Fig. 1 is a schematic structural view of the active biopsy device according to the present invention in a first operation mode.

Fig. 2 is a schematic structural view of the active biopsy device of the present invention in a second operation mode.

Fig. 3 is a schematic view of the active biopsy device according to the present invention, in which the outer sleeve electrode and the inner tube electrode are detached from each other.

Fig. 4 is an enlarged view of a partial structure of the inner tube electrode in the active biopsy device of the present invention.

Reference numerals

1 radio frequency power generator

2 negative plate

3 outer sleeve electrode

4 inner tube electrode

41 electrode insulation region

42 sample point ablation zone

Detailed Description

In order to make the technical means, the inventive features, the objectives and the functions of the present invention easy to understand, the present invention will be further described with reference to the following specific drawings. However, the present invention is not limited to the following embodiments.

It should be understood that the structure, proportion, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions of the present invention, so that the present invention does not have the substantial technical significance, and the modification of any structure, the change of the proportion relation or the adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention.

As shown in fig. 1 to 4, in this embodiment, the active biopsy device includes a radio frequency power generator 1, an outer cannula electrode 3, an inner tube electrode 4 and an electrode plate, wherein the outer cannula electrode 3 is drawn as transparent in fig. 1 and 2 only for indicating the relative position relationship of the outer cannula electrode 3 and the inner tube electrode 4 nested together, and in actual application, the outer cannula electrode 3 may be made of opaque material, and the inner tube electrode 4 cannot be seen through the outer cannula electrode 3;

the outer sleeve electrode 3 is connected with a first control end of the radio frequency power generator 1, the inner tube electrode 4 is connected with a second control end of the radio frequency power generator 1, and the electrode plate is connected with a third control end of the radio frequency power generator 1;

a first ablation loop, a second ablation loop and a third ablation loop are respectively formed between the outer sleeve electrode 3 and the electrode plate, between the inner tube electrode 4 and the electrode plate and between the outer sleeve electrode 3 and the inner tube electrode 4 through the radio frequency power generator 1;

the radio frequency power generator 1 controls the on-off and switching of the first ablation loop, the second ablation loop and the third ablation loop;

the outer sleeve electrode 3 can form a puncture sleeve, and the inner tube electrode 4 can be detachably inserted into the outer sleeve electrode 3 and extends out of the front end of the outer sleeve electrode 3 by a preset distance; in specific implementation, the outer sleeve electrode 3 and the inner tube electrode 4 can be fixedly connected through a structural key when being connected.

An electrode insulation area 41 is formed by the part of the inner tube electrode 4 contacted with the outer sleeve electrode 3, and a sampling point ablation area 42 is formed by the part of the inner tube electrode 4 extending out of the outer sleeve electrode 3; and a needle track ablation area is formed by the tube wall of the outer sleeve electrode 3.

In this embodiment, the active needle biopsy device can be controlled to operate in different operation modes by the radio frequency power generator 1.

Fig. 4 shows a specific structure of the inner tube electrode 4, and fig. 4 is an enlarged view of a partial structure of the inner tube electrode 4 in the active biopsy device of the present invention. Wherein, the electrode insulation region 41 is insulated, and the part is a non-heating region; while the sample point ablation zone 42 is hot during the ablation state, it acts on the biopsy sample zone.

Because the active puncture biopsy device can respectively form different ablation loops between the outer sleeve electrode 3 and the electrode plate, between the inner tube electrode 4 and the electrode plate and between the outer sleeve electrode 3 and the inner tube electrode 4 through the radio frequency power generator 1, the outer sleeve electrode 3 and the electrode plate can be independently ablated aiming at a needle channel when in matched use, and the inner tube electrode 4 and the electrode plate can be independently ablated aiming at a sampling point when in matched use, wherein the first ablation loop and the second ablation loop can be simultaneously conducted, the needle channel and the sampling point are ablated at the same time and can also be respectively conducted, the needle channel and the sampling point are respectively ablated at different times, and hemostasis is performed on different positions in a targeted and accurate manner; when a third ablation loop formed by the outer sleeve electrode 3 and the inner tube electrode 4 is conducted, the first ablation loop and the second ablation loop are required to be in a turn-off state, and at the moment, the outer sleeve electrode 3 and the inner tube electrode 4 can work simultaneously to ablate a sampling point and a needle channel.

The rf power generator 1 can control the first ablation loop, the second ablation loop, and the third ablation loop to be turned on or off and switched under the operation of an operator (i.e., corresponding functions can be realized without additional software or computer program improvement). Through the structural design, after the active puncture biopsy device is used for puncture biopsy sampling, the ablation area can be flexibly controlled according to the bleeding condition and the treatment requirement respectively aiming at the needle channel and the sampling point when the active puncture biopsy device is used in cooperation with an electrode plate, and the outer sleeve electrode 3 and the inner tube electrode 4 can be controlled to form a loop and perform hemostasis ablation on the needle channel and the sampling point simultaneously under the condition that the active puncture biopsy device cannot be used in cooperation with the electrode plate. The active aspiration biopsy device can be flexibly adapted to different clinical operations, has stronger compatibility and convenient operation, and effectively meets the treatment requirement.

In the implementation process of the active puncture biopsy device, the outer sleeve electrode 3 forming the puncture sleeve has an ablation function, so that needle channel ablation can be implemented under the condition that the puncture sleeve is not moved, the planting risk is effectively avoided, and meanwhile, the inner tube electrode 4 can penetrate through the outer sleeve electrode 3 and then ablate a sampling point, so that the hemostasis operation of the sampling point is realized.

In this embodiment, the active needle biopsy device further comprises a biopsy tool movably arranged in the outer cannula electrode 3.

In this embodiment, the biopsy tool is a disposable biopsy brush or a disposable biopsy forceps.

In this embodiment, the outer sleeve electrode 3 is connected to the first control end of the rf power generator 1 in a pluggable manner via a first connection line, the inner sleeve electrode 4 is connected to the second control end of the rf power generator 1 in a pluggable manner via a second connection line, and the electrode plate is connected to the third control end of the rf power generator 1 in a pluggable manner via a third connection line.

In this embodiment, the electrode plate is constituted by the negative electrode plate 2.

In this embodiment, when the third ablation loop formed between the outer sheath electrode 3 and the inner tube electrode 4 is switched to be on, the inner tube electrode 4 needs to be inserted into the outer sheath electrode 3, and the inner tube electrode 4 and the outer sheath electrode 3 are fixedly connected by a structural bond.

In this embodiment, the radio frequency power generator 1 further includes a radio frequency ablation module, a loop on-off switching control module, and a human-computer interaction module;

the loop on-off switching control module is respectively connected with a first control end, a second control end, a third control end and a radio frequency ablation module in the radio frequency power generator 1;

The circuit on-off switching control module is respectively connected with the first control end, the second control end and the third control end, so that the outer sleeve electrode, the inner tube electrode and the electrode plate which are connected to the first control end, the second control end and the third control end can be controlled by the circuit on-off switching control module to be communicated with each other to form different circuits, and the radio frequency ablation module provides radio frequency signals for the ablation circuits to perform ablation.

When the ablation system is specifically implemented, the human-computer interaction module can be composed of a touch screen or other control mechanisms, and a user can select which ablation loop to ablate by controlling the human-computer interaction module, so that the ablation requirement is met.

In other embodiments, a loop monitoring mechanism may be disposed in the rf power generator to monitor whether the electrode plate in the rf power generator is attached to the human body, and if it is monitored that the electrode plate is not connected to the rf power generator or the human body, the human-computer interaction module is automatically controlled to select the third ablation loop for ablation during ablation.

In this embodiment, the maximum output power of the rf ablation module does not exceed 200W (watts), and the rf ablation module outputs rf signals in 400-500KHZ frequency band.

By adopting the active puncture biopsy device in the embodiment, the two bleeding points of the needle channel and the sampling point can be effectively ablated, the bleeding problem of the biopsy position is solved, and the risk of needle channel planting is reduced.

Two different working modes can be executed by adopting the active puncture biopsy device:

fig. 1 is a schematic structural diagram of the active biopsy device of the present invention in a first working mode (in fig. 1, the outer sleeve electrode 3 and the inner tube electrode 4 are connected to the same side, but in practice, the outer sleeve electrode 3 and the inner tube electrode 4 may be connected to different control terminals in the rf power generator 1).

In the first working mode, the ablation function of the radio-frequency electrode is realized by the way that the outer sleeve electrode 3 and the inner tube electrode 4 are respectively matched with the electrode plate, namely, the ablation function is realized by the way that the positive electrode and the negative electrode are separated.

As shown in fig. 1, the outer sleeve electrode 3 and the inner tube electrode 4 respectively form a loop with the electrode plate at different times under the control of the rf power generator 1 in a predetermined manner preset by the system.

When the radio frequency power generator 1 selects the outer sleeve electrode 3 and the electrode plate to form a first ablation loop according to the instruction signal and controls the conduction of the first ablation loop, the outer sleeve electrode 3 ablates the tissue contacting the outer tube, and needle channel ablation is realized;

when the radio frequency power generator 1 selects the inner tube electrode 4 and the electrode plate to form a second ablation loop according to the instruction signal and controls the second ablation loop to be conducted, the inner tube electrode 4 extends into the outer sleeve electrode 3 and penetrates out of the front end of the outer sleeve electrode 3 for a preset distance, a sampling point ablation area 42 is formed by a part of the inner tube electrode 4 extending out of the outer sleeve electrode 3, and the sampling point ablation area 42 ablates the sampling point.

When the active biopsy device works in the first working mode, the outer sleeve electrode 3 and the inner tube electrode 4 can respectively form an ablation loop with the electrode plate, so the outer sleeve electrode 3 and the inner tube electrode 4 can separately work to independently execute ablation work.

In the implementation, the rf power generator 1 can generate rf signals of 400-500KHz, and the output power thereof can be selected according to actual requirements, and the maximum power does not exceed 200W. The user can show the selection items to the user through the human-computer interaction module in the radio frequency power generator 1, and the operator can select the outer sleeve electrode 3 or the inner tube electrode 4 rows for ablation and hemostasis according to the specific bleeding point and the using flow.

In fig. 1, the inner tube electrode 4 is inserted into the outer sheath electrode 3, and the inner tube electrode 4 is separated from the outer sheath electrode 3 as shown in fig. 3.

When the active aspiration biopsy device works in the first working mode, the active aspiration biopsy device is used in clinical application according to the following procedures:

the first step is as follows: the outer sleeve electrode 3 is taken as a passive puncture sleeve and is tightly fixed with a biopsy tool and then is placed in a target biopsy area to be taken;

the second step is that: after the sampling operation is completed, the biopsy tool inside the outer sleeve electrode 3 is removed, and the inner tube electrode 4 is placed into the tube of the outer sleeve electrode 3 and fixed.

The third step: the ablation hemostasis is carried out on an electrode needle passage or a sampling area by selecting the outer sleeve electrode 3 or the inner tube electrode 4 and the negative plate 2 to work on an operation panel (namely a man-machine interaction module) of the radio frequency power generator 1.

Fig. 2 is a schematic structural diagram of the active biopsy device of the present invention in the second working mode (the diagram is only to show that no additional electrode plate is needed in this mode, and in practice, the electrode plate may not be removed from the rf power generator 1).

In the second working mode, the outer sleeve electrode 3 and the inner tube electrode 4 are respectively used as the anode and the cathode of the electrode in a third ablation loop formed by the outer sleeve electrode 3 and the inner tube electrode 4, the negative plate 2 which can be attached to the surface of the human body in the first working mode is directly taken off, the outer sleeve electrode 3 and the inner tube electrode 4 respectively serve as the anode and the cathode to work simultaneously, and ablation hemostasis is performed on an electrode needle passage and a sampling area.

The same as the first working mode, the outer sleeve electrode 3 in the second working mode is a hollow sleeve, and can be used as a radio frequency electrode after being connected with a system to supply radio frequency energy, the inner tube electrode 4 is a solid radio frequency electrode, and is divided into an electrode insulation area 41 without heat and a sampling point ablation area 42 with heat, and the structure is shown in fig. 4.

The first step after the sampling of the biopsy sample is completed is described briefly below based on the second working mode, and the difference from the implementation mode is that the inner tube electrode 4 is placed in the outer tube electrode 3, the position is fixed, the hemostasis is performed by one-key ablation through operating the button on the operation panel of the radio frequency power generator 1, and the hemostasis is performed by ablation on the needle channel and the sampling point. In this mode of operation, the outer sheath electrode 3 and the inner sheath electrode 4 cannot be used separately and must be used with a fixed relative position.

The implementation of the working frequency band and the maximum working power of the rf power generator 1 in the second working mode is the same as the implementation of the first working mode.

When the active puncture biopsy device works in the first mode, the ablation process is more flexible, the two parts can be independently used for hemostasis, and the consistency of hemostasis effects is better guaranteed; when the active biopsy device works in the second mode, hemostasis can be performed when the negative plate 2 (namely the electrode plate) is not attached, and the structure is simpler and more convenient.

The active puncture biopsy device in the embodiment solves the problems of bleeding and needle path planting in the use process of a passive tool;

in the embodiment, the electrode needle is improved in design, and different modes are used for ablation hemostasis aiming at different bleeding points, so that the puncture biopsy is more accurate and effective;

effectively solves the problems of bleeding and needle path planting and reduces the complications caused by the bleeding and the needle path planting.

the method comprises the steps that a radio frequency power generator, an outer sleeve electrode, an inner tube electrode and a plate electrode are arranged, wherein a first ablation loop, a second ablation loop and a third ablation loop are formed among the outer sleeve electrode, the inner tube electrode and the plate electrode through the radio frequency power generator respectively, meanwhile, an electrode insulation area is formed by a part, in the inner tube electrode, in contact with the outer sleeve electrode, and a sampling point ablation area is formed by a part, in the inner tube electrode, extending out of the outer sleeve electrode; and a needle channel ablation area is formed by the tube wall of the outer sleeve electrode, so that after puncture biopsy sampling is completed through the outer sleeve electrode, needle channel ablation is realized by the outer sleeve electrode, and ablation is realized on a sampling point by the inner tube electrode. Effectively solving the bleeding of the needle channel and the sampling point, reducing the occurrence probability of the needle channel bleeding and the sampling point bleeding and reducing the risk of needle channel planting. And simultaneously, the utility model discloses in, control through the radio frequency power generator first melt the break-make and the switching that return circuit, second melt return circuit and third melt the return circuit, can select the ablation point pertinence, realize accurate ablation, satisfy the operation demand, just can satisfy melting of the position of allowwing attached extra plate electrode and not allowwing melting at the position of attached extra plate electrode through a set of equipment, the compatibility is stronger, and adaptability is good.

The utility model discloses an among the active aspiration biopsy device technical scheme, each functional module and the modular unit that wherein include all can correspond to the specific hardware circuit in the integrated circuit structure, therefore only relate to the improvement of specific hardware circuit, and the hardware part is not only the carrier that carries out control software or computer program, consequently solves corresponding technical problem and obtains corresponding technological effect and does not relate to the application of any control software or computer program yet, that is to say, the utility model discloses only utilize the improvement in the aspect of the hardware circuit structure that these modules and units relate to can solve the technical problem that will solve to obtain corresponding technological effect, and need not assist and can realize corresponding function with specific control software or computer program.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations could be devised by those skilled in the art without the use of inventive faculty. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. An active puncture biopsy device is characterized by comprising a radio frequency power generator, an outer sleeve electrode, an inner tube electrode and an electrode plate;

the outer sleeve electrode can form a puncture sleeve, and the inner tube electrode can be detachably inserted into the outer sleeve electrode and extends out of the front end of the outer sleeve electrode for a preset distance;

2. The active biopsy device of claim 1, further comprising a biopsy tool movably disposed in the outer cannula electrode.

3. The active needle biopsy device of claim 2, wherein the biopsy tool is a disposable biopsy brush or a disposable biopsy forceps.

4. The active biopsy device of claim 2, wherein the outer cannula electrode is removably connected to the first control terminal of the rf power generator via a first connecting wire, the inner cannula electrode is removably connected to the second control terminal of the rf power generator via a second connecting wire, and the electrode plate is removably connected to the third control terminal of the rf power generator via a third connecting wire.

5. The active biopsy device of claim 1, wherein the electrode plate is comprised of a negative plate.

6. The active biopsy device of claim 1, wherein when the third ablation circuit formed between the outer cannula electrode and the inner tube electrode is switched to be conductive, the inner tube electrode needs to be inserted into the outer cannula electrode, and the inner tube electrode and the outer cannula electrode are fixedly connected through a structural bond.

7. The active needle biopsy device of claim 1, wherein the radio frequency power generator further comprises a radio frequency ablation module, a circuit on-off switching control module, and a human-computer interaction module;

8. The active biopsy device of claim 7, wherein the maximum output power of the RF ablation module does not exceed 200W, and the RF ablation module outputs RF signals in the 400-500KHZ frequency band.