Biopsy device

Abstract

The utility model is applicable to the technical field of medical instruments, and provides a biopsy device, which comprises a shell, a needle core seat and a first indicating mechanism, the needle core seat is movably connected with the shell and has a loading position and a sampling position, and the needle core seat is used for mounting a sampling needle; the first indicating mechanism is installed on the shell and used for indicating whether the pointer core base moves to the sampling position or not. The needle core seat is movably arranged in the shell and can drive the sampling needle to move between a loading position and a sampling position, and meanwhile, a first indicating mechanism is further arranged on the shell and can indicate whether the needle core seat moves to the sampling position or not. Compared with a biopsy needle in the prior art, the biopsy needle has the advantages that after the sampling needle is inserted into the body of a patient, whether the needle core seat and the sampling needle move to the sampling position or not can be indicated through the first indicating mechanism, an operator can visually judge whether the biopsy device is successfully fired or not, and the biopsy device is more convenient to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a biopsy device. Background Art

[0002] A biopsy, short for a biopsy of living tissue, is a cancer examination method that obtains tissue samples from suspected tumor lesions in a patient's body, conducts pathological analysis, and makes a diagnosis. Most biopsies use a biopsy needle to obtain samples for examination. During the operation of the biopsy needle, the biopsy needle needs to be first inserted into the lesion area in the body, and then its needle core is pushed forward so that the sampling groove provided on the needle core is filled with tissue cells. Then, the sleeve sleeved outside the needle core is pushed forward, so that the tissue cells entering the sampling groove are cut by the sleeve and remain in the sampling groove. However, most biopsy needles have the problem that it is impossible to effectively determine whether the firing is successful. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a biopsy device, aiming to solve the technical problem that in the prior art, it is impossible to effectively determine whether the firing is successful during the use of the biopsy device.

[0004] The utility model is realized as follows: A biopsy device includes a housing, a needle core seat, and a first indicating mechanism. The needle core seat is movably connected to the housing and has a loading position and a sampling position. The needle core seat is used for installing a sampling needle. The first indicating mechanism is installed on the housing and is used to indicate whether the needle core seat moves to the sampling position.

[0005] In an optional embodiment, the first indicating mechanism includes an indicating member. The indicating member is movably connected to the housing. A pushing member is provided on the needle core seat. The pushing member is used to push the indicating member so that at least a part of the indicating member protrudes from the outer surface of the housing when the needle core seat is in the sampling position.

[0006] In an optional embodiment, an elastic member is provided between the indicating member and the housing. The elastic member is used to reset the indicating member when the pushing member is separated from the indicating member.

[0007] In an optional embodiment, the sliding direction of the indicating member and the moving direction of the needle core seat are arranged at an angle. A force conduction structure is further provided between the pushing member and the indicating member, and the force conduction structure is used to change the direction of force conduction.

[0008] In an alternative embodiment, the force conduction structure includes a first inclined surface and a second inclined surface. The first inclined surface is disposed on the pushing member, and the second inclined surface is disposed on the indicating member. The first inclined surface is configured to push the indicating member to move to a target position when the pushing member moves to the sampling position through interaction with the second inclined surface.

[0009] In an alternative embodiment, the biopsy device further includes a second indicating mechanism disposed on the housing, and the second indicating mechanism is configured to indicate whether the needle core holder has moved to the loading position.

[0010] In an alternative embodiment, the second indicating mechanism includes a light-emitting unit, a conductive component, and a power supply unit. The light-emitting unit is disposed on the housing, the power supply unit is disposed on the housing or the needle core holder, and the conductive component is configured to connect the light-emitting unit and the power supply unit to form an electrical conduction loop. Wherein, the light-emitting unit is operably electrically connected to the power supply unit through the conductive component.

[0011] In an alternative embodiment, the conductive component includes an elastic electrode and a flexible wire. The elastic electrode is located between the needle core holder and the housing and is fixedly disposed on the needle core holder or the housing, and the flexible wire is configured to be electrically connected to at least two of the light-emitting unit, the power supply unit, and the elastic electrode.

[0012] In an alternative embodiment, the power supply unit is disposed on the needle core holder and can move with the needle core holder. The elastic electrode is fixedly disposed on the housing, and the flexible wire is configured for electrical connection between the light-emitting unit and the power supply unit, and electrical connection between the light-emitting unit and the elastic electrode.

[0013] In an alternative embodiment, a mounting groove for accommodating the power supply unit is provided on the needle core holder, and the power supply unit is mounted in the mounting groove.

[0014] The technical effect of the present utility model relative to the prior art is that the needle core holder is movably disposed in the housing and can drive the sampling needle to move between the loading position and the sampling position. At the same time, a first indicating mechanism is also provided on the housing to indicate whether the needle core holder has moved to the sampling position. Compared with the biopsy needle in the prior art, after the sampling needle is inserted into the patient's body, the first indicating mechanism can indicate whether the needle core holder and the sampling needle have moved to the sampling position, enabling the operator to intuitively judge whether the biopsy device has been successfully fired, making the use of the biopsy device more convenient. At the same time, it can also improve the sampling success rate and reduce the pain caused to the patient due to repeated sampling. Description of the Drawings

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for describing the embodiments of the present invention or the prior art. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is a schematic structural diagram of a biopsy device provided by the present invention;

[0017] Figure 2 is a partial cross-sectional structural schematic diagram of a biopsy device provided by the present invention;

[0018] Figure 3 is a schematic structural diagram of the biopsy device provided by the present invention after removing part of the housing Figure 1 ;

[0019] Figure 4 is Figure 3 an enlarged structural schematic diagram at A in

[0020] Figure 5 is a schematic structural diagram of the biopsy device provided by the present invention after removing part of the housing Figure 2 ;

[0021] Figure 6 is Figure 5 an enlarged structural schematic diagram at B in

[0022] Explanation of reference numerals:

[0023] 1. Housing; 2. Needle core seat; 21. Pushing member; 3. Sampling needle; 4. First indicating mechanism; 41. Indicator; 42. Elastic member; 43. Force conduction structure; 431. First inclined surface; 432. Second inclined surface; 5. Second indicating mechanism; 51. Light emitting unit; 52. Conductive member; 521. Elastic electrode; 522. Flexible wire; 53. Power supply unit; 6. Mounting groove. Detailed implementation manners

[0024] The following will describe in detail the embodiments of the present invention. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0027] In the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] In order to make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments.

[0029] Please refer to Figure 1 As shown, in an embodiment of the present utility model, a biopsy device is provided, which includes a housing 1, a needle core seat 2, and a first indicating mechanism 4. The needle core seat 2 is movably connected to the housing 1 and has a loading position and a sampling position. The needle core seat 2 is used for installing a sampling needle 3; the first indicating mechanism 4 is installed on the housing 1 and is used to indicate whether the needle core seat 2 has moved to the sampling position.

[0030] Specifically, the housing 1 may be a thin-walled component having a cavity inside, and the needle core seat 2 may be movably arranged inside the housing 1, wherein the needle core seat 2 may be slidably arranged in the cavity inside the housing 1. The sampling needle 3 is mounted on the needle core seat 2, and moves along the length direction of the sampling needle 3 driven by the needle core seat 2. The loading position refers to the position of the needle core seat 2 relative to the housing 1 when it is loaded and maintained in the loaded state, and the sampling position refers to the position of the needle core seat 2 relative to the housing 1 after the firing is completed. The needle core seat 2 can reciprocate between the loading position and the sampling position, thereby cyclically executing the functions of loading and firing sampling. When the needle core seat 2 is in the loading position, it means that the entire biopsy device is in the loading state, that is, the ready-to-fire state; when the needle core seat 2 is in the sampling position, it means that the needle core seat 2 drives the sampling needle 3 to complete the firing sampling action, and at this time, it can be considered that the biopsy device has been successfully fired. The first indicating mechanism 4 is a mechanism that can indicate whether the needle core seat 2 has moved to the sampling position. The first indicating mechanism 4 can be mechanical, for example, by a block that can move with the needle core seat 2; or by vibration, sound or indicator light.

[0031] In the biopsy device provided by the embodiment of the utility model, the needle core seat 2 is movably arranged in the housing 1, and can drive the sampling needle 3 to move between the loading position and the sampling position. At the same time, a first indication mechanism 4 is also arranged on the housing 1, which can indicate whether the needle core seat 2 has moved to the sampling position. Compared with the biopsy needle in the prior art, after the sampling needle 3 is inserted into the patient's body, the first indication mechanism 4 can indicate whether the needle core seat 2 and the sampling needle 3 have moved to the sampling position, so that the operator can intuitively judge whether the biopsy device has been fired successfully, making the use of the biopsy device more convenient, and at the same time, it can also improve the sampling success rate and reduce the pain of the patient caused by repeated sampling.

[0032] In one embodiment, Figure 2 As shown, the first indicating mechanism 4 includes an indicating member 41, which is movably connected to the housing 1. A pushing member 21 is provided on the needle core seat 2. The pushing member 21 is used to push the indicating member 41 so that at least part of the indicating member 41 protrudes from the outer surface of the housing 1 when the needle core seat 2 is located at the sampling position. Specifically, the indicating member 41 refers to a block-shaped member with a certain volume. The movably connected indicating member 41 and the housing 1 means that the housing 1 and the indicating member 41 can be slidably connected or rotatably connected. The pushing member 21 can be a part of the needle core seat 2 itself, or it can be an additional member provided on the needle core seat 2. The pushing member 21 can be provided protruding from the side of the needle core seat 2, and the size of the pushing member 21 is smaller than the overall size of the needle core seat 2, so that the pushing member 21 can enter a position that the needle core seat 2 cannot reach, thereby making the movement of the needle core seat 2 more convenient.

[0033] When the needle core seat 2 has not moved to the sampling position, the indicating member 41 will be located inside the housing 1. When observed from the outside of the housing 1, the top end of the indicating member 41 is flush with the side surface of the housing 1 or recessed inside the housing 1, and the indicating member 41 cannot be touched tactilely. When the needle core seat 2 moves to the sampling position, the pushing member 21 will be in movable contact with the indicating member 41 and push the indicating member 41. At the same time, the indicating member is movably connected to the housing 1. After the indicating member 41 is pushed by the pushing member 21, at least a part of the indicating member 41 protrudes from the outer surface of the housing 1, so that the operator can visually observe the protrusion of the indicating member 41 and can also tactilely touch the protrusion of the indicating member 41, thereby enabling the operator to intuitively judge whether the biopsy device has been fired successfully.

[0034] In an alternative embodiment, as Figure 2 shown, an indicating color may be applied to the portion of the indicating member 41 that can protrude from the outer surface of the housing 1. The indicating color may be red, yellow, or a color different from the color of the housing 1. It can be more eye-catching visually after the indicating member 41 protrudes from the housing 1, enhancing the visual cue effect of the indicating member 41.

[0035] In a specific embodiment, as Figure 2 shown, the indicating member 41 is slidably connected to the housing 1, and the indicating member 41 may be rod-shaped or columnar with a certain length. An installation hole is provided on the housing 1, and the indicating member 41 is slidably arranged in the installation hole, making the installation of the indicating member 41 more stable and convenient and also making the movement of the indicating member 41 more stable.

[0036] Among them, the end of the indicating member 41 close to the inside of the housing 1 is the first end, and the other end of the indicating member 41 is the second end. During the movement of the needle core seat 2, the pushing member 21 will contact the first end of the indicating member 41 and push the indicating member 41 to slide, causing the indicating member 41 to slide until the second end of the indicating member 41 protrudes to the outside of the housing 1 when the needle core seat 2 moves to the sampling position.

[0037] To make the reset of the indicating member 41 more convenient, as Figure 2 shown, an elastic member 42 is provided between the indicating member 41 and the housing 1. The elastic member 42 is used to reset the indicating member 41 when the pushing member 21 separates from the indicating member 41. Specifically, the elastic member 42 refers to an elastic component. By providing an elastic member 42 between the indicating member 41 and the housing 1, the indicating member 41 can be reset when the pushing member 21 separates from the indicating member 41, and the reset of the indicating member 41 can be made more convenient by the pushing of the elastic member 42.

[0038] Among them, the elastic member 42 may be a spring or a rubber sleeve, etc. The elastic member 42 may be sleeved outside the indicating member 41, and one end of the elastic member 42 abuts against the housing 1 and the other end is connected to the elastic member 42, making the installation of the elastic member 42 more stable.

[0039] In one embodiment, as Figure 2 shown, an included angle is provided between the sliding direction of the indicating member 41 and the moving direction of the needle core seat 2. A force transmission structure 43 is further provided between the pushing member 21 and the indicating member 41, and the force transmission structure 43 is used to change the direction of force transmission. Specifically, for the convenience of the operator's grip, the housing 1 is generally a cylinder with a certain length, and the needle core seat 2 generally moves along the length direction of the housing 1. At this time, by setting an included angle between the sliding direction of the indicating member 41 and the moving direction of the needle core seat 2, the indicating member 41 can be arranged at a position on the housing 1 that is easy to observe and / or easy to touch. At the same time, a force transmission structure 43 is further provided between the pushing member 21 and the indicating member 41, so that when the moving directions of the two are at an included angle, the pushing of the indicating member 41 by the pushing member 21 can still be realized, ensuring the stability of the use of the first indicating mechanism 4.

[0040] In an alternative embodiment, as Figure 2 shown, the included angle between the sliding direction of the indicating member 41 and the moving direction of the needle core seat 2 is 90°, which can make the position setting of the indicating member 41 more flexible and save space.

[0041] In one embodiment, as Figure 2 shown, the force transmission structure 43 includes a first inclined surface 431 and a second inclined surface 432. The first inclined surface 431 is arranged on the pushing member 21, and the second inclined surface 432 is arranged on the indicating member 41. The first inclined surface 431 is used to push the indicating member 41 to move to the target position through the interaction with the second inclined surface 432 when the pushing member 21 moves to the sampling position. Specifically, the first inclined surface 431 is a plane arranged at an included angle with the moving direction of the needle core seat 2, and the second inclined surface 432 is a plane arranged at an included angle with the sliding direction of the indicating member 41. The target position refers to the position after at least a part of the indicating member 41 protrudes from the housing 1. When the first inclined surface 431 is in contact with the second inclined surface 432, the first inclined surface 431 will simultaneously apply a force along the moving direction of the needle core seat 2 and a force perpendicular to the moving direction of the needle core seat 2 to the second inclined surface 432. Since the indicating member 41 can only slide along a direction perpendicular to the moving direction of the needle core seat 2, at this time, the thrust of the pushing member 21 can be converted into the movement along the sliding direction of the indicating member 41.

[0042] Among them, the first inclined surface 431 and the second inclined surface 432 can be arranged in parallel with each other, which can make the contact area between the first inclined surface 431 and the second inclined surface 432 larger when they are in contact with each other, so that the contact between the indicating member 41 and the pushing member 21 is more stable.

[0043] In one embodiment, as Figures 3 to 6As shown, the biopsy device further includes a second indicating mechanism 5 provided on the housing 1, and the second indicating mechanism 5 is used to indicate whether the needle core holder 2 has moved to the loaded position. Specifically, the second indicating mechanism 5 refers to a mechanism that can indicate whether the needle core holder 2 has moved to the loaded position. The second indicating mechanism 5 can use a mechanical method for indication, such as using a block that can move together with the needle core holder 2 for indication; it can also use methods such as vibration, sound, or an indicator light for indication. By providing the second indicating mechanism 5 on the housing 1 and using the second indicating mechanism 5 to indicate whether the needle core holder 2 and the sampling needle 3 have moved to the loaded position, the operator can intuitively judge whether the biopsy device has been successfully loaded, making the use of the biopsy device more convenient and safe.

[0044] In one embodiment, as Figure 4 or Figure 6 shown, the second indicating mechanism 5 includes a light-emitting unit 51, a conductive component 52, and a power supply unit 53. The light-emitting unit 51 is provided on the housing 1, the power supply unit 53 is provided on the housing 1 or the needle core holder 2, and the conductive component 52 is used to connect the light-emitting unit 51 and the power supply unit 53 to form an electrical conduction loop. Among them, the light-emitting unit 51 is operably electrically connected to the power supply unit 53 through the conductive component 52. Specifically, the light-emitting unit 51 refers to a component that can convert electrical energy into light energy, such as an LED lamp bead, a diode, or other components that can emit light. The power supply unit 53 refers to a component that can provide electrical energy output, such as various types of batteries. The conductive component 52 refers to a component that can conduct electricity. By connecting the two electrodes of the light-emitting unit 51 to the power supply unit 53 through the conductive component 52 respectively to form an electrical conduction loop, and the light-emitting unit 51 is operably electrically connected to the power supply unit 53 through the conductive component 52. Operably electrically connected means that the electrical conduction loop can be switched between the connected state and the disconnected state through operation. When the needle core holder 2 is in the loaded position, the conductive component 52 can connect the power supply unit 53 and the light-emitting unit 51, so that the entire circuit is connected, and the light-emitting unit 51 emits light to remind the operator that the needle core holder 2 is in the loaded position. When the needle core holder 2 leaves the loaded position, the conductive component 52 is separated from the power supply unit 53, causing the entire circuit to be disconnected, and at this time the light-emitting unit 51 stops emitting light. By using the light-emitting unit 51 for indication, the visual reminder effect of the second indicating mechanism 5 can be better, and the operator can intuitively judge whether the biopsy device has been successfully loaded.

[0045] In one embodiment, as Figure 4 or Figure 6As shown, the conductive component 52 includes an elastic electrode 521 and a flexible wire 522. The elastic electrode 521 is located between the needle core base 2 and the housing 1 and is fixedly arranged on the needle core base 2 or the housing 1. The flexible wire 522 is used for electrical connection between at least two of the light-emitting unit 51, the power supply unit 53, and the elastic electrode 521. Specifically, the elastic electrode 521 refers to a component that can elastically deform itself and conduct current, and the flexible wire 522 refers to a flexible wire structure that can be bent or folded. The conductive component 52 is in the form of a combination of the elastic electrode 521 and the flexible wire 522. By separately arranging the elastic electrode 521 and the power supply unit 53 on the needle core base 2 and the housing 1, when the elastic electrode 521 is arranged on the needle core base 2, the power supply unit 53 is arranged on the housing 1; when the elastic electrode 521 is arranged on the housing 1, the power supply unit 53 is arranged on the needle core base 2. Then, one electrode of the light-emitting unit 51 is connected to the power supply unit 53 through the flexible wire 522, and at the same time, the other electrode of the light-emitting unit 51 is connected to the elastic electrode 521 through the flexible wire 522. In this way, when the needle core base 2 is in the chambering position and the power supply unit 53 contacts the elastic electrode 521, the entire conductive circuit can be conducted; when the needle core base 2 moves away from the chambering position, the power supply unit 53 and the elastic electrode 521 also move away from each other, and the entire conductive circuit is disconnected. The use of the elastic electrode 521 can be contracted to a certain extent, which can make the contact between the elastic electrode 521 and the power supply unit 53 closer. At the same time, the flexible wire 522 has a certain flexibility and can be bent or folded. When the power supply unit 53 and the elastic electrode 521 approach each other as the needle core base 2 moves, the flexible wire 522 can be bent; when the power supply unit 53 and the elastic electrode 521 move away from each other as the needle core base 2 moves, the flexible wire 522 can unfold the bent part. It can maintain the connection between one electrode of the light-emitting unit 51 and the power supply unit 53 and the connection between the other electrode of the light-emitting unit 51 and the elastic electrode 521 during the movement of the needle core base 2, making the entire circuit more stable and reliable.

[0046] Based on the above-described characteristic elastic electrode 521, as Figure 4 or Figure 6As shown, the power supply unit 53 is arranged on the needle core seat 2 and can move with the needle core seat 2, the elastic electrode 521 is fixedly arranged on the shell 1, and the soft wire 522 is used for the electrical connection between the light-emitting unit 51 and the power supply unit 53, and the electrical connection between the light-emitting unit 51 and the elastic electrode 521. Specifically, by arranging the power supply unit 53 on the needle core seat 2 and arranging the elastic electrode 521 on the shell 1, the position of the elastic electrode 521 is kept. The soft wire 522 connects one electrode of the light-emitting unit 51 to the power supply unit 53, and at the same time, the other electrode of the light-emitting unit 51 is connected to the elastic electrode 521 through the soft wire 522. Since the elastic electrode 521 is elastic and has a certain length, fixing the position of the elastic electrode 521 can prevent the elastic electrode 521 from shaking and contacting other components in the shell 1, which can make the use of the entire second indication mechanism 5 safer.

[0047] In one embodiment, Figure 4 or Figure 6 As shown, the needle core seat 2 is provided with a card-mounting groove 6 for accommodating the power supply unit 53, and the power supply unit 53 is card-mounted in the card-mounting groove 6. Specifically, the card-mounting groove 6 refers to a groove structure that can accommodate the power supply unit 53. The power supply unit 53 can be tightly card-mounted in the card-mounting groove 6, or the power supply unit 53 can be pressed and fixed in the card-mounting groove 6 by additionally setting components, so that the installation and fixation of the power supply unit 53 can be more firmly.

[0048] In an optional embodiment, if Figure 4 or Figure 6 As shown, the power supply unit 53 is a button battery, and the shape of the card slot 6 is adapted to the shape of the power supply unit 53. The power supply unit 53 uses a button battery to save manufacturing costs.

[0049] The above are only preferred embodiments of the present invention, and only specifically describe the technical principles of the present invention. These descriptions are only for the purpose of explaining the principles of the present invention, and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanation here, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention, and other specific implementation methods of the present invention that can be associated with by technicians in this field without creative labor, should be included in the scope of protection of the present invention.

Claims

1. A biopsy device, characterized in that: The invention comprises a housing (1), a needle core seat (2) and a first indicating mechanism (4); the needle core seat (2) is movably connected to the housing (1) and has a loading position and a sampling position; the needle core seat (2) is used to mount a sampling needle (3); the first indicating mechanism (4) is mounted on the housing (1) and is used to indicate whether the needle core seat (2) has moved to the sampling position; the first indicating mechanism (4) comprises an indicating member (41); the indicating member (41) is movably connected to the housing (1); a pushing member (21) is provided on the needle core seat (2); the pushing member (21) is used to push the indicating member (41) so that when the needle core seat (2) is located at the sampling position, at least part of the indicating member (41) protrudes from the outer surface of the housing (1).

2. The biopsy device according to claim 1, characterized in that An elastic member (42) is provided between the indicating member (41) and the housing (1), and the elastic member (42) is used to reset the indicating member (41) when the pushing component (21) and the indicating member (41) are separated.

3. The biopsy device according to claim 1, characterized in that The sliding direction of the indicator (41) is arranged at an angle to the moving direction of the needle core seat (2), and a force transmission structure (43) is also arranged between the pushing component (21) and the indicator (41), and the force transmission structure (43) is used to change the force transmission direction.

4. The biopsy device according to claim 3, characterized in that: The force transmission structure (43) comprises a first inclined surface (431) and a second inclined surface (432), wherein the first inclined surface (431) is arranged on the pushing component (21), and the second inclined surface (432) is arranged on the indicating member (41), and the first inclined surface (431) is used for pushing the indicating member (41) to move to the target position through interaction with the second inclined surface (432) when the pushing component (21) moves to the sampling position.

5. The biopsy device according to any one of claims 1 to 4, characterized in that: The biopsy device further comprises a second indicating mechanism (5) arranged on the housing (1), and the second indicating mechanism (5) is used to indicate whether the needle core seat (2) has moved to the loading position.

6. The biopsy device according to claim 5, characterized in that The second indicating mechanism (5) comprises a light-emitting unit (51), a conductive component (52) and a power supply unit (53); the light-emitting unit (51) is arranged on the housing (1); the power supply unit (53) is arranged on the housing (1) or the needle core seat (2); the conductive component (52) is used to connect the light-emitting unit (51) and the power supply unit (53) to form a conductive loop, wherein the light-emitting unit (51) is electrically connected to the power supply unit (53) in an operably manner through the conductive component (52).

7. The biopsy device according to claim 6, characterized in that The conductive component (52) comprises an elastic electrode (521) and a soft wire (522); the elastic electrode (521) is located between the needle core seat (2) and the shell (1) and is fixedly arranged on the needle core seat (2) or the shell (1); the soft wire (522) is used for electrically connecting to at least two of the light-emitting unit (51), the power supply unit (53), and the elastic electrode (521).

8. The biopsy device according to claim 7, characterized in that: The power supply unit (53) is arranged on the needle core seat (2) and can move with the needle core seat (2), the elastic electrode (521) is fixedly arranged on the shell (1), and the soft wire (522) is used for the electrical connection between the light-emitting unit (51) and the power supply unit (53), and the electrical connection between the light-emitting unit (51) and the elastic electrode (521).

9. The biopsy device according to claim 8, characterized in that The needle core seat (2) is provided with a card-mounting groove (6) for accommodating the power supply unit (53), and the power supply unit (53) is card-mounted in the card-mounting groove (6).

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