CN216257209U - Biopsy needle and system - Google Patents

Abstract

The utility model discloses a biopsy needle and a system, wherein the biopsy needle comprises: an inner tube, an outer extension, a tool bit, and an electrode; the cutter head is arranged at the far end of the inner tube; the outer telescopic piece is arranged outside the inner tube in a sleeved mode and can be close to or far away from the cutter head along the axial direction of the inner tube; one end of the electrode is connected with the cutter head, the other end of the electrode is connected with the far end of the outer telescopic piece, and the far end of the outer telescopic piece is one end, close to the cutter head, of the outer telescopic piece; when the outer telescopic piece approaches to the cutter head along the axial direction of the inner pipe, the electrode can be extruded to bend outwards, and the outwards bent finger bends away from the inner pipe; after the outer telescopic piece is close to the cutter head to the target position along the axial direction of the inner tube, the electrode is configured to rotate around the axial direction of the inner tube. The utility model samples by a rotary cutting mode of the high-frequency electrotome, and solves the problems of bleeding, complex structure, high cost and easy failure of the existing physical cutting sampling mode.

Description

Biopsy needle and system

Technical Field

The utility model relates to the technical field of biopsy, in particular to a biopsy needle and a biopsy system.

Background

In the modern society, along with the improvement of living standard of people, the progress of times and science and technology, the improvement of medical level, and the consciousness of people on self health is increased day by day. In recent years, the incidence rate of cancer is on the increase trend, and the lung cancer has been the cancer with the highest incidence rate all over the world before, and the latest data in 2020 shows that the number of new breast cancer reaches 226 ten thousand, the number of lung cancer is 220 ten thousand, and the breast cancer formally replaces the lung cancer and becomes the first cancer in the world.

Breast cancer is not an incurable cancer, and the cure rate is quite high when the breast cancer is discovered at an early stage, and can reach 70% or even higher. Therefore, regular breast examinations are the best preventive measure for the reduced incidence of breast cancer.

At present, many medical institutions at home and abroad develop and produce medical instruments for breast biopsy aiming at the problem of the breast. The mainstream breast biopsy products in the market at present are mainly open sampling of the company Mimengtong and closed sampling of the company Andce, both of which are used for sampling a lesion part through physical cutting, and the sampling modes are basically consistent. The method has two main defects, namely, blood vessels or capillary vessels can be damaged after human tissues are physically cut, so that bleeding is caused; secondly, the biopsy needle with the physical cutting mode has a complex structure and high cost, and is easy to have use faults.

SUMMERY OF THE UTILITY MODEL

The utility model provides a biopsy needle and a biopsy system, which are used for solving the problems of bleeding, complex structure, high cost and easy failure in the conventional physical cutting sampling mode.

According to a first aspect of the present invention, there is provided a biopsy needle comprising: an inner tube, an outer extension, a tool bit, and an electrode; wherein,

the cutter head is arranged at the far end of the inner tube;

the outer telescopic piece is configured to be sleeved outside the inner pipe and can be close to or far away from the cutter head along the axial direction of the inner pipe;

one end of the electrode is connected with the cutter head, the other end of the electrode is connected with the far end of the outer telescopic piece, and the far end of the outer telescopic piece is the end, close to the cutter head, of the outer telescopic piece;

when the outer telescopic piece is close to the cutter head along the axial direction of the inner tube, the electrode can be extruded to bend outwards, and the outwards bent fingers are bent away from the inner tube;

after the outer telescopic piece is close to the cutter head in position along the axial direction of the inner tube, the electrode is configured to rotate around the axial direction of the inner tube.

Preferably, the inner pipe is a hollow structure, and a negative pressure groove or a negative pressure port is formed in the surface of the inner pipe.

Preferably, the number of the negative pressure grooves or the negative pressure ports is plural.

Preferably, the outer telescopic member is an outer telescopic tube.

Preferably, the method further comprises the following steps: a sample slot disposed at a proximal end of the inner tube;

the electrodes are configured to be capable of clamping sample tissue into the sample trench.

Preferably, the number of the electrodes is two, and the two electrodes are positioned on two opposite sides of the inner tube.

Preferably, when the outer telescopic part is close to the cutter head to a target position along the axial direction of the inner pipe, the two electrodes are in an annular structure.

Preferably, the method further comprises the following steps: a handle and an adjustment member; wherein,

the handle is arranged at the proximal end of the inner tube;

the adjusting piece is arranged on the handle, the adjusting piece is connected with the outer telescopic piece, and the adjusting piece is configured to be capable of controllably driving the outer telescopic piece to be close to or far away from the cutter head along the axial direction of the inner pipe.

Preferably, the adjusting piece is an advancing and retreating gear adjusting piece.

According to a second aspect of the present invention, there is provided a biopsy needle system comprising: the biopsy needle and the negative electrode plate described above;

the negative plate is indirectly electrically connected with the electrode.

The biopsy needle and the biopsy system provided by the utility model generate high-frequency electromagnetic waves through the active electrode, complete rotary cutting through rotation, replace the previous biopsy sampling mode of physical rotary cutting, have simple structure, low cost, safety and high efficiency, have a certain degree of hemostasis function in the cutting process, shorten the operation time and reduce postoperative complications.

In one alternative of the utility model, the negative pressure groove or the negative pressure port is arranged on the surface of the inner tube, so that residual body fluid in the body can be absorbed, and the probability of recurrence of the breast disease is effectively reduced.

In an alternative scheme of the utility model, the two electrodes are oppositely arranged, and the two electrodes can clamp and convey the sampled tissue.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of a biopsy needle according to an embodiment of the utility model in a first state;

FIG. 2 is a schematic view of a biopsy needle according to an embodiment of the utility model in a second state;

FIG. 3 is a schematic view of a biopsy needle according to an embodiment of the present invention after completion of sampling;

FIG. 4 is a schematic view of a biopsy needle according to an embodiment of the present invention after clamping a sampled tissue sample to a sample well.

Description of reference numerals:

1-an inner tube, wherein,

2-an outer extension piece which is provided with a plurality of holes,

3-a cutter head, wherein the cutter head is provided with a cutter head,

4-an electrode, wherein the electrode is arranged on the substrate,

5-a negative pressure groove is arranged on the upper portion of the vacuum groove,

6-the tissue of the sample is,

7-sample tank.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "upper surface", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the description of the present invention, "a plurality" means a plurality, e.g., two, three, four, etc., unless specifically limited otherwise.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and the like are to be construed broadly, e.g., as meaning fixedly attached, detachably attached, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

In one embodiment, a biopsy needle is provided, comprising: an inner tube 1, an outer extension 2, a cutting head 3 and an electrode 4, please refer to fig. 1 and 2. Wherein, the cutter head 3 is arranged at the far end of the inner tube 1; the outer telescopic member 2 is disposed to be able to be sleeved outside the inner tube 1 and to be able to approach or separate from the tool bit 3 along the axial direction of the inner tube 1. One end of the electrode 4 is connected to the tool bit, and the other end of the electrode 4 is connected to the distal end of the outer extension 2, and the distal end of the outer extension 2 is the end of the outer extension 2 close to the tool bit 3. When the outer telescopic part 2 approaches the cutter head 3 along the axial direction of the inner pipe 1, the electrode 4 can be extruded to bend outwards, and the outwards bent fingers are bent away from the inner pipe 1; after the outer telescopic part 2 is close to the cutter head 3 to a target position along the axial direction of the inner tube 1, the electrode 4 is activated and is configured to rotate around the axial direction of the inner tube 1, and rotary cutting is completed.

The biopsy needle of the above embodiment includes two states: the first state and the second state, the electrode needle is not working, and is in the first state in the process of inserting or extracting the wound, as shown in figure 1, the electrode is in the straightening state. When the biopsy needle needs to complete biopsy sampling, the outer telescopic rod 2 approaches the cutter head 3 along the inner tube 1 to push the electrode to bend and expand outwards, and when the electrode is expanded to the position, the electrode is in a second state, as shown in fig. 2.

The working process of the biopsy needle of the above embodiment when used for breast biopsy is as follows: the biopsy needle penetrates into the breast to reach the lesion tissue part, and stops → the outer telescopic piece is close to the cutter head along the axial direction of the inner tube, the electrode is pushed to bend and expand outwards → the electrode is activated, the electrode is driven to rotate, the rotary cutting is completed → the outer telescopic piece is far away from the cutter head along the axial direction of the inner tube, and the electrode is driven to straighten → the biopsy needle is pulled out of the breast.

The working principle of the biopsy needle of the above embodiment is as follows: the working end of the electrode outputs electromagnetic waves with very high frequency, generally higher than 1.5MHz (for example, the frequency of the product of Grairanbo is 4MHz), the electromagnetic waves are concentrated in a very small area through the electrode, and as the cell contains a large number of water molecules (the water molecules are polar molecules and are influenced by an electromagnetic field), the water molecules oscillate rapidly under the action of the local high-frequency electromagnetic field, and impact the cell wall to break the cell wall, thereby achieving the purpose of cutting.

In one embodiment, the inner tube 1 is a hollow structure, and the surface of the inner tube 1 is provided with a negative pressure groove 5 or a negative pressure port, please refer to fig. 1 and 2. The waste liquid in the body can be absorbed through the adsorption force of the negative pressure, and the probability of recurrence of the breast disease is effectively reduced.

In one embodiment, in order to enhance the negative pressure effect and enlarge the negative pressure radiation area, the number of the negative pressure grooves or the negative pressure ports is plural, please refer to fig. 1 and fig. 2.

In one embodiment, the number of the electrodes is two, and the two electrodes are located at two opposite sides of the inner tube, please refer to fig. 1. Preferably, when the outer telescopic part is close to the cutter head along the axial direction of the inner tube to the target position, the two electrodes are in an annular structure. Preferably, the two electrodes are in a circular ring structure, please refer to fig. 2.

In different embodiments, when the electrode is bent to the target position, the electrode is not necessarily in a standard circular ring structure, and can also be in a similar circular ring structure, and a better rotary cutting effect can be achieved.

In one embodiment, 270 degree rotary cutting is used to drive the electrode for atherectomy, i.e., the direction in which the electrode stops when the atherectomy is completed is rotated 90 degrees from the direction in which the electrode enters the patient. The number of turns of rotary cutting can be adjusted properly according to the flexibility of the sampled tissue.

In one embodiment, the biopsy needle further comprises: a sample well 7, the sample well 7 being disposed at the proximal end of the inner tube 1. Fig. 3 is a schematic diagram of the electrode after the rotational cutting has been completed to sample, wherein the sampled tissue 6 is located in the ring formed by the two electrodes; after the rotary cutting is finished, the two electrodes clamp the sample tissue 6 to the sample groove 7 along with the movement of the outer telescopic piece in the direction away from the cutter head, as shown in fig. 4.

In one embodiment, the external telescopic element is an external telescopic tube, please refer to fig. 1 and 2. In different embodiments, the outer telescopic part does not need to be in a pipeline form, so long as the purpose of driving the far end of the electrode to be close to or far away from the cutter head can be achieved.

In one embodiment, to facilitate adjustment of the outer telescopic rod, the biopsy needle may further comprise: a handle and an adjusting member. Wherein, the handle is arranged at the near end of the inner tube. The adjusting piece is arranged on the handle, the adjusting piece is connected with the outer telescopic piece, and the adjusting piece is configured to be capable of controllably driving the outer telescopic piece to move towards or away from the cutter head along the axial direction of the inner tube.

In a preferred embodiment, the adjusting piece can be an advancing and retreating gear adjusting piece, the adjusting piece is adjusted in a gear mode, and in the gear rotating process, the outer telescopic rod moves more accurately along the axial direction of the inner tube, so that the fixed point of the electrode can be more accurate.

In an embodiment, there is provided a biopsy needle system comprising: in any of the embodiments described above, the negative plate is electrically connected to the electrode of the biopsy needle. The negative plate is laid on the operating table, and during operation, the patient lies on the operating table, and the back of the patient is in contact with the negative plate, and the electrode is electrically connected with the negative plate through the patient.

In the description herein, reference to the terms "an implementation," "an embodiment," "a specific implementation," "an example" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A biopsy needle, comprising: an inner tube, an outer extension, a tool bit, and an electrode; wherein,

the cutter head is arranged at the far end of the inner tube;

the outer telescopic piece is configured to be sleeved outside the inner pipe and can be close to or far away from the cutter head along the axial direction of the inner pipe;

one end of the electrode is connected with the cutter head, the other end of the electrode is connected with the far end of the outer telescopic piece, and the far end of the outer telescopic piece is the end, close to the cutter head, of the outer telescopic piece;

when the outer telescopic piece is close to the cutter head along the axial direction of the inner tube, the electrode can be extruded to bend outwards, and the outwards bent fingers are bent away from the inner tube;

after the outer telescopic piece is close to the cutter head to a target position along the axial direction of the inner tube, the electrode is configured to rotate around the axial direction of the inner tube.

2. The biopsy needle of claim 1, wherein the inner tube is a hollow structure, and a surface of the inner tube is provided with a negative pressure groove or a negative pressure port.

3. The biopsy needle of claim 2, wherein the negative pressure groove or port is plural in number.

4. The biopsy needle of claim 1, wherein the outer telescoping member is an outer telescoping tube.

5. A biopsy needle according to any of claims 1 to 4, wherein the number of electrodes is two, two electrodes being located on opposite sides of the inner tube.

6. The biopsy needle of claim 5, further comprising: a sample slot disposed at a proximal end of the inner tube;

the electrodes are configured to be capable of clamping sample tissue into the sample trench.

7. The biopsy needle of claim 5, wherein the two electrodes are in a ring configuration when the outer telescoping member is moved axially of the inner tube toward the cutting head to a target position.

8. The biopsy needle of claim 1, further comprising: a handle and an adjustment member; wherein,

the handle is arranged at the proximal end of the inner tube;

the adjusting piece is arranged on the handle, the adjusting piece is connected with the outer telescopic piece, and the adjusting piece is configured to be capable of controllably driving the outer telescopic piece to be close to or far away from the cutter head along the axial direction of the inner pipe.

9. The biopsy needle of claim 8, wherein the adjustment is an advancing and retracting gear adjustment.

10. A biopsy needle system, comprising: the biopsy needle of any one of claims 1 to 9 and the negative plate;

the negative plate is indirectly electrically connected with the electrode.

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