Deviation-rectifying and direction-adjusting type biopsy needle device for tissue sampling and application method thereof

Abstract

The invention discloses a deviation-rectifying and direction-adjusting type biopsy needle device for tissue sampling and an application method thereof, and the device comprises an advancing and retreating driving structure which is provided with a first rotation kinetic energy output end part capable of outputting rotation driving energy; one end of the advancing and retreating transmission structure is screwed to the first rotation kinetic energy output end of the advancing and retreating driving structure, and the advancing and retreating transmission structure forms a lead screw framework through linear limiting to output linear displacement kinetic energy; the sampling needle assembly is rotationally connected to the advancing and retreating transmission structure in a bilateral limiting manner along the axial direction; the transposition driving structure is provided with a second rotating kinetic energy output end part capable of outputting rotating driving energy and a self-adaptive telescopic part which is in transmission connection with the second rotating kinetic energy output end part, and one end part, far away from the transposition driving structure, of the self-adaptive telescopic part is in transmission assembly connection with the sampling needle assembly. The needle inserting angle and the needle inserting depth can be better grasped and adjusted, dependence on doctor experience is reduced, and the puncture success rate is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of biopsy needle instruments, and in particular to a deviation-correcting and direction-adjustable biopsy needle device for tissue sampling and an application method thereof. Background Art

[0002] At present, interventional needle aspiration biopsy is a lesion sampling surgery with small incision, fast recovery and high safety to determine the nature of the lesion. It has made great contributions to modern medical clinics. Needle aspiration biopsy is usually used to obtain pathological tissue, and the nature of the lesion is determined by pathological examination and analysis. During the operation, the surgeon places the positioning instrument on the surface of the patient's lesion, and then uses CT to assist in scanning the patient's lesion area. After the lesion is determined, the positioning instrument is used to determine the direction and point of the needle insertion, and then the needle aspiration biopsy is performed to obtain the pathological tissue.

[0003] However, during actual needle insertion, the depth and angle of the needle mainly rely on the operator's experience and feel. After puncture during surgery, the operator usually needs to determine the depth and angle of the sampling needle based on the CT scan, and adjust the sampling angle direction of the needle according to the relative position of the sampling needle and the blood vessels of dangerous organs in the body, or perform multi-angle sampling for the accuracy of the sample. Therefore, there are often more or less errors. In addition, since the needle tip usually has a certain lateral inclination (beveled needle), operational adjustments are likely to increase the risk of surgical bleeding and infection. Summary of the invention

[0004] To this end, the present invention provides a deviation-correcting and direction-adjustable biopsy needle device for tissue sampling and an application method thereof, so as to better grasp and adjust the needle insertion angle and needle insertion depth, reduce dependence on doctor's experience, and improve the puncture success rate.

[0005] In order to achieve the above object, the present invention provides the following technical solutions: A deflection-correcting and direction-adjustable biopsy needle device for tissue sampling, comprising: The forward and backward driving structure has a first rotational kinetic energy output end portion capable of outputting rotational driving energy; An advance and retreat transmission structure, one end of which is threadedly assembled on the first rotational kinetic energy output end of the advance and retreat drive structure, and the advance and retreat transmission structure forms a screw structure through linear limit to output linear displacement kinetic energy; The sampling needle assembly is arranged on the advance and retreat transmission structure along the axial double-sided limited transfer assembly; The indexing drive structure has a second rotational kinetic energy output end capable of outputting rotational driving energy and an adaptive telescopic part transmission-assembled at the second rotational kinetic energy output end, and the adaptive telescopic part is transmission-assembled and connected to the sampling needle assembly at one end away from the indexing drive structure.

[0006] On the basis of the above technical solution, the present invention is further described as follows: As a further solution of the present invention, the advance and retreat drive structure includes an advance and retreat drive motor and a transmission screw; the transmission screw serves as the first rotational kinetic energy output end of the advance and retreat drive structure and is fixedly connected to the kinetic energy output end of the advance and retreat drive motor for transmission; the advance and retreat transmission structure includes a transmission nut seat and a drive limit plate; the transmission nut seat is threadedly assembled on the transmission screw; the drive limit plate is fixedly assembled and connected to the transmission nut seat, and the drive limit plate cooperates with the transmission screw and forms a screw structure through linear limitation to output linear displacement kinetic energy.

[0007] As a further solution of the present invention, the advance and retreat drive structure also includes a position adjustment and speed change assembly; the position adjustment and speed change assembly is configured as a multi-stage gear transmission assembly and / or a sprocket chain transmission assembly; and the kinetic energy input end of the position adjustment and speed change assembly and the kinetic energy output end of the advance and retreat drive motor are coaxially and fixedly connected, and the kinetic energy output end of the position adjustment and speed change assembly and the transmission screw are coaxially and fixedly connected; the transmission screw is correspondingly located on one side of the advance and retreat drive motor.

[0008] As a further solution of the present invention, it also includes: an advance and retreat guide structure, including a directional guide rail and a guide slide; the guide slide is slidably assembled on the directional guide rail; and the guide slide is fixedly assembled and connected to the drive limit plate.

[0009] As a further solution of the present invention, it also includes: an assembly base structure; the base part of the forward and backward drive motor is fixedly assembled on the assembly base structure; the transmission screw is assembled on the assembly base structure through a bearing member; and the directional guide rail is fixedly assembled on the assembly base structure.

[0010] As a further solution of the present invention, the sampling needle assembly includes a sampling needle body, a beveled needle tip, a needle body adapter, a needle body limit seat and a transfer shaft rod; one end of the sampling needle body is provided with a beveled needle tip, and the beveled needle tip is a tissue sampling end with a specific orientation; the needle body limit seats are arranged in two groups at intervals, and the two groups of the needle body limit seats are fixedly connected to each other by the transfer shaft rod, the transfer shaft rod transfer assembly is arranged on the drive limit plate, and the two groups of the needle body limit seats are respectively in one-to-one correspondence and fit in contact with the drive The two sides of the limiting plate form a limiting effect; the other end of the sampling needle body is fixedly connected to the needle body connector, and the needle body connector is fixedly connected to one group of the needle body limiting seats. The sampling needle body can be disposable, and the sampling needle body is installed on the needle body limiting seat through the needle body connector, and can be removed from the needle body limiting seat through the needle body connector; the linear sliding displacement action of the driving limiting plate synchronously drives the two groups of needle body limiting seats, the needle body connector and the sampling needle body to complete the needle advancement and retraction process.

[0011] As a further solution of the present invention, the indexing drive structure includes an indexing drive motor; and the adaptive telescopic part of the indexing drive structure is arranged as a directional telescopic rod; the base part of the indexing drive motor is fixedly assembled on the assembly base structure; the rotational kinetic energy output end of the indexing drive motor is transmission-fixedly connected with one end of the directional telescopic rod as the second rotational kinetic energy output end of the indexing drive structure; the other end of the directional telescopic rod is fixedly connected with another group of the needle body limit seats, and the directional telescopic rod, the indexing shaft, the needle body connector and the sampling needle body are coaxially correspondingly arranged.

[0012] As a further solution of the present invention, it also includes: an electric control structure, including a control button and an electric control module; the electric control module includes a mobile power supply and a control module connected through a circuit; the control button is connected to the control input end of the control module through a circuit; the control button includes a needle advance control button, a needle retreat control button and a steering control button; the control output end of the control module is connected to a relay through a circuit, and the output end of the relay is respectively connected to the advance and retreat drive motor and the indexing drive motor through a circuit.

[0013] Preferably, the directional guide is fixedly assembled on the assembly base structure and is fully or partially exposed to the outside of the assembly base structure; and a scale is provided on the directional guide to facilitate observation of the depth of needle insertion.

[0014] As a preferred embodiment, the deflection-correcting and direction-adjustable biopsy needle device for tissue sampling of the present invention also includes a positioning baffle, which can be fixed to the directional guide rail, for example, it can be fixed to the directional guide rail in any of the following ways: clamped to the directional guide rail, or magnetically attracted or glued to the directional guide rail, or snapped to the directional guide rail. After the positioning baffle is fixed to a specific position of the directional guide rail, when the drive limit plate moves to the position where the positioning baffle is located, that is, when the drive limit plate touches the positioning baffle, it means that the sampling needle has entered or retreated to the specified depth. At this time, due to the presence of the positioning baffle, the drive limit plate will be blocked from continuing to move, thereby preventing the sampling needle from continuing to enter or retreat. At the same time, due to the jamming of the operation, the operator can be reminded to stop inserting or withdrawing the needle, which is conducive to improving accuracy and reducing errors.

[0015] As a preferred embodiment, the positioning baffle may also be provided with a sounding device, which is located on the positioning baffle and can touch the driving limit plate. The sounding device may be a touch sounding device or an electronic sounding device to remind the operator to pay attention. When the driving limit plate moves to the position where the positioning baffle is located, that is, when the driving limit plate touches the sounding device of the positioning baffle, the sounding device will make a sound to remind the operator to pay attention, thereby avoiding further needle insertion or withdrawal.

[0016] As a preferred embodiment, a driving motor switch is provided on the positioning baffle, and the driving motor switch is located on the positioning baffle and can touch the driving limit plate. The driving motor switch is connected to the control input end of the control module through a circuit. When the driving limit plate moves to the position of the positioning baffle, that is, when the driving limit plate touches the driving motor switch of the positioning baffle, the operation of closing the switch will be triggered, thereby preventing the needle from continuing to be advanced or retracted.

[0017] Optionally, the sampling needle body is a coaxial needle (including an inner needle and a hollow needle tube, with the inner needle inside the needle tube) to avoid repeated needle insertion and damage to the tissue. The inner needle is inserted or withdrawn along the channel formed by the hollow needle tube. The effect of multi-angle puncture sampling can be achieved by simply adjusting the direction. When the sampling needle body is a coaxial needle, the inner needle and the needle tube are respectively fixedly connected to the needle body limit seat through corresponding fittings, so that the needle tube and the inner needle can be inserted and withdrawn at the same time, and the inner needle can also be retracted relative to the needle tube during the needle withdrawal operation.

[0018] A method for using the deflection-correcting and direction-adjustable biopsy needle device for tissue sampling comprises the following steps: When the tissue sampling and needle insertion process is performed, the needle insertion control button is pressed, and the control module receives the needle insertion signal and outputs a command to control the forward and backward drive motor to output rotational kinetic energy. The rotational kinetic energy output by the forward and backward drive motor is transmitted to the transmission screw through the speed adjustment component based on the transmission ratio setting, so that the transmission screw rotates synchronously and further cooperates with the transmission nut seat to form a screw structure to drive the drive limit plate to slide along the directional guide rail along the straight line, and then the linear sliding displacement of the drive limit plate drives the sampling needle body to perform the needle insertion process until the oblique needle tip of the sampling needle body reaches the predetermined point, and the needle insertion control button is released to stop the needle insertion; When the tissue sampling needle withdrawal process is performed, the needle withdrawal control button is pressed, and the control module receives the needle withdrawal signal and outputs instructions to control the advance and retreat drive motor to output rotational kinetic energy in the reverse direction, thereby driving the sampling needle body to perform the needle withdrawal process through a transmission action in the opposite direction to the needle advancement process, until the beveled needle tip returns to the specified position, and the needle withdrawal control button is released.

[0019] As a further solution of the present invention, the following steps are also included: When the direction of the tissue sampling end of the sampling needle body needs to be adjusted after the tissue sampling needle insertion process is performed, the steering control button is pressed, and the control module receives the steering signal and outputs a command to control the advance and retreat drive motor to output rotational kinetic energy in the opposite direction of the needle insertion rotation direction, and the sampling needle body is driven to retreat through the transmission action in the opposite direction of the needle insertion process, and the retreat distance of the sampling needle body is not less than the extension length of its bevel needle tip; Afterwards, the control module continues to output instructions to control the indexing drive motor to output rotational kinetic energy. The rotational kinetic energy output by the indexing drive motor drives the sampling needle body to index through the directional telescopic rod and the indexing shaft rod in turn, until the oblique needle tip of the sampling needle body is rotated to the required position, and then the steering control button is released; When the steering control button is pressed again, it is regarded as a continuous pressing of the steering control button. At this time, the retraction process is not performed, and the rotational kinetic energy is directly output by the indexing drive motor and transmitted to drive the sampling needle body to continue to index, thereby effectively completing the required adjustment of the bevel needle tip direction of the sampling needle body.

[0020] The present invention has the following beneficial effects: The device can effectively serve as the structural assembly basis of the overall device through the assembly base structure, and can utilize the advance and retreat drive structure to cooperate with the advance and retreat transmission structure and the advance and retreat guide structure to complete the automatic advance and retreat and rotation and automatic needle withdrawal control of the sampling needle assembly. In addition, the rotation drive structure can also be used to achieve independent and flexible rotation control of the sampling needle assembly, which significantly improves the overall functional practicality. The present invention can help doctors better grasp and adjust the needle insertion angle and needle insertion depth, reduce dependence on doctor's experience, improve puncture success rate, and reduce surgical errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the implementation mode of the present invention or the technical solution in the prior art, the drawings required for the implementation mode or the description of the prior art will be briefly introduced below. The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0022] Figure 1 A schematic diagram of the internal assembly structure of a deflection-correcting and direction-adjustable biopsy needle device for tissue sampling provided by an embodiment of the present invention; Figure 2 This is a schematic diagram of the external structure of a deflection-correcting and direction-adjustable biopsy needle device for tissue sampling that can be selected in an embodiment of the present invention; Figure 3 This is a schematic diagram of the external structure of another optional deflection-correcting and direction-adjustable biopsy needle device for tissue sampling according to an embodiment of the present invention; Figure 4 The invention provides a biopsy needle device for tissue sampling that can be corrected and adjusted in direction. Figure 1 A magnified view of the local structure at point A.

[0023] Figure 5 A schematic diagram of the partial structure of a sampling needle assembly corresponding to the position of a needle body limit seat in a deviation-correcting and direction-adjustable biopsy needle device for tissue sampling provided by an embodiment of the present invention.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows: Assemble the base structure 1 and the control button 11; Advance and retreat drive structure 2: advance and retreat drive motor 21, position adjustment and speed change assembly 22, transmission screw 23; Advance and retreat transmission structure 3: transmission nut seat 31, drive limit plate 32; Advance and retreat guide structure 4: directional guide rail 41, guide slide 42; scale 43; positioning baffle 44; Sampling needle assembly 5: sampling needle body 51, oblique needle tip 52, needle body limit seat 53, transfer shaft 54; needle body adapter 55; The indexing driving structure 6 includes an indexing driving motor 61 and a directional telescopic rod 62 . DETAILED DESCRIPTION

[0025] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] The terms such as "upper", "lower", "left", "right", and "middle" used in this specification are only for the convenience of description and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships should be regarded as within the scope of the invention without substantially changing the technical content.

[0027] like Figures 1 to 5 As shown, the embodiment of the present invention provides a correctable and direction-adjustable biopsy needle device for tissue sampling, including an assembly base structure 1, an advance and retreat drive structure 2, an advance and retreat transmission structure 3, an advance and retreat guide structure 4, a sampling needle assembly 5 and a rotation drive structure 6. The assembly base structure 1 is used as the structural assembly basis of the overall device. At the same time, the advance and retreat drive structure 2 can be used to cooperate with the advance and retreat transmission structure 3 and the advance and retreat guide structure 4 to complete the automatic advance and retreat and rotation and automatic needle withdrawal control of the sampling needle assembly 5. In addition, the rotation drive structure 6 can be used to effectively realize the independent and flexible rotation control of the sampling needle assembly 5, which significantly improves the functional practicality of the overall device. The specific settings are as follows: Please refer to Figure 2 and Figure 3 , the assembly base structure 1 is used as the assembly basis of the overall architecture; Figure 2 and Figure 3 There are two optional appearance structures for the assembly base structure 1. The assembly base structure 1 can also select the appearance of other structures as needed; Figures 1 to 3As shown, the advance and retreat drive structure 2 includes an advance and retreat drive motor 21, a position adjustment and speed change component 22 and a transmission screw 23; wherein the base of the advance and retreat drive motor 21 is fixedly assembled on the assembly base structure 1; the position adjustment and speed change component 22 is configured as a multi-stage gear transmission component and / or a sprocket chain transmission component, and the kinetic energy input end of the position adjustment and speed change component 22 is coaxially fixedly connected with the kinetic energy output end of the advance and retreat drive motor 21; one end of the transmission screw 23 is assembled on the assembly base structure 1 through a bearing member, and the transmission screw 23 is correspondingly located at the On one side of the advance and retreat drive motor 21, the other end of the transmission screw 23 is coaxially connected to the kinetic energy output end of the positioning and speed change assembly 22; it is used to effectively transfer the rotational kinetic energy output by the advance and retreat drive motor 21 to the transmission screw 23 based on the transmission ratio setting through the positioning and speed change assembly 22 to achieve synchronous rotation, and at the same time, the extension direction of the transmission screw 23 can be changed by using the positioning and speed change assembly 22, so that the transmission screw 23 is parallel to the side of the advance and retreat drive motor 21, thereby significantly reducing the forward space occupied, leaving enough space for the needle body and medical staff, and facilitating operations such as needle insertion and needle withdrawal.

[0028] Please refer to Figures 1 to 5 The advance and retreat transmission structure 3 includes a transmission nut seat 31 and a drive limit plate 32, and the advance and retreat guide structure 4 includes a directional guide rail 41 and a guide slide 42; wherein, the transmission nut seat 31 is threadedly assembled on the transmission screw 23, and one end of the drive limit plate 32 is fixedly assembled and connected to the transmission nut seat 31; the directional guide rail 41 is fixedly assembled on the assembly base structure 1, and the outer wall of the assembly base structure is fully or partially exposed, the guide slide 42 is slidably assembled on the directional guide rail 41, and the guide slide 42 is fixedly assembled and connected to the other end of the drive limit plate 32; it is used to realize the rotation of the transmission screw 23 through the above-mentioned setting to cooperate with the transmission nut seat 31 to form a screw structure, so that the drive limit plate 32 can slide and shift along a straight line based on the directional guide rail 41.

[0029] Please refer to Figures 1 to 5 The sampling needle assembly 5 includes a sampling needle body 51, a beveled needle tip 52, a needle body stopper 53, a transfer shaft 54 ​​and a needle body adapter 55; wherein one end of the sampling needle body 51 is a beveled needle tip 52, and the beveled needle tip 52 forms a tissue sampling end with a specific orientation. Optionally, the other end of the sampling needle body 51 is coaxially connected to a Luer connector, which is connected to the sampling needle to connect to a suction pump or a syringe to form a predetermined tissue sampling suction force.

[0030] The needle body limiting seats 53 are arranged in two groups at intervals, and the two groups of the needle body limiting seats 53 are fixedly connected by the transfer shaft 54. The transfer shaft 54 ​​is transfer-assembled and arranged on the driving limit plate 32, and the two groups of the needle body limiting seats 53 are respectively and one by one correspondingly arranged on both sides of the driving limit plate 32 in a close contact manner; the other end of the sampling needle body 51 is fixedly connected to the needle body connector 55, and the needle body connector 55 is fixedly connected to one of the groups of the needle body limiting seats 53; in this way, the linear sliding displacement effect of the driving limit plate 32 is utilized to synchronously drive the two groups of needle body limiting seats 53, the needle body connector 55 and the sampling needle body 51 to complete the needle advancing and retreating process.

[0031] The directional guide is provided with a scale 43, which can be used to observe the depth of the needle insertion. The correctable and adjustable biopsy needle device for tissue sampling in this embodiment also includes a positioning baffle 44, which can be fixed to the directional guide 41 in the form of magnetic attraction or adhesion, or clamped on the directional guide 41, or snapped on the directional guide 41. After the positioning baffle 44 is magnetically attracted or adhered to the directional guide 41, or clamped, snapped or fixed at a specific position of the directional guide 41, when the driving limit plate 32 moves to the position where the positioning baffle 44 is located, that is, when the driving limit plate 32 touches the positioning baffle 44, it means that the sampling needle has entered or retreated to the specified depth. At this time, due to the presence of the positioning baffle 44, the driving limit plate 32 will be blocked from continuing to move, thereby preventing the sampling needle from continuing to enter or retreat. At the same time, due to the jamming of the operation, the operator can be reminded to stop the needle insertion or withdrawal, which is conducive to improving accuracy and reducing errors.

[0032] Please continue to refer to Figures 1 to 5 The indexing drive structure 6 includes an indexing drive motor 61 and a directional telescopic rod 62; wherein the base portion of the indexing drive motor 61 is fixedly assembled and arranged on the assembly base structure 1, one end of the directional telescopic rod 62 is transmission-fixedly connected to the rotational kinetic energy output end of the indexing drive motor 61, and the other end of the directional telescopic rod 62 is fixedly connected and arranged with another group of the needle body limit seats 53, and the directional telescopic rod 62, the indexing shaft rod 54, the needle body adapter 55 and the sampling needle body 51 are coaxially arranged correspondingly, so as to utilize the indexing drive motor 61 to output the rotational kinetic energy and drive the needle body adapter 55 and the sampling needle body 51 to index in sequence through the directional telescopic rod 62 and the indexing shaft rod 54 to adjust the direction of the tissue sampling end thereof, and at the same time utilize the directional telescopic rod 62 to adaptively adjust the extension length according to the advance and retreat and index and retreat processes of the sampling needle body 51, thereby ensuring the overall functional practicality.

[0033] It should be noted that the assembly base structure 1 is also equipped with an electric control structure. Specifically, the electric control structure includes control buttons 11 respectively arranged on the outer wall of the assembly base structure 1 and an electric control module built into the assembly base structure 1. The electric control module includes a mobile power supply and a control module connected by a circuit. The mobile power supply can use but is not limited to a lithium battery. The control module can be selected but is not limited to a single-chip microcomputer control board with a model of AT80C51 and a microcontroller with a model of STM32; the control buttons 11 are respectively connected to the control input ends of the control modules through circuits; the control buttons 11 include a needle advance control button, a needle retreat control button and a steering control button; the control output end of the control module is connected to the input end of a relay through a circuit, and the output end of the relay is respectively connected to the advance and retreat drive motor 21 and the indexing drive motor 61 through a circuit; so as to effectively realize the overall automatic operation by inputting control instructions through the control button 11.

[0034] The embodiment of the present invention further provides an application method of a deflection-correcting and direction-adjustable biopsy needle device for tissue sampling, which specifically includes the following steps: When the tissue sampling and needle insertion process is performed, the needle insertion control button on the outer wall of the assembly base structure 1 is pressed, and the control module receives the needle insertion signal and outputs a command to control the advance and retreat drive motor 21 to output rotational kinetic energy. The rotational kinetic energy output by the advance and retreat drive motor 21 is transmitted to the transmission screw 23 through the adjustment speed change component 22 based on the transmission ratio setting, so that the transmission screw 23 rotates synchronously and further cooperates with the transmission nut seat 31 to form a screw structure to drive the driving limit plate 32 to slide along the directional guide rail 41 along the straight line, and then the sampling needle body 51 is driven by the linear sliding displacement of the driving limit plate 32 to perform the needle insertion process until the oblique needle tip 52 of the sampling needle body 51 reaches the predetermined point, and the needle insertion control button is released to stop the needle insertion; When the direction of the tissue sampling end of the sampling needle body 51 needs to be adjusted after the tissue sampling needle insertion process is performed, the steering control button on the outer wall of the assembly base structure 1 is pressed, and the control module receives the steering signal and outputs a command to control the advance and retreat drive motor 21 to output a rotational kinetic energy opposite to the needle insertion rotation direction, and the sampling needle body 51 is driven to retreat through the transmission action opposite to the needle insertion process, and the retreat distance of the sampling needle body 51 is not less than the extension length of its oblique needle tip 52; thereafter, the control module continues to output a command to control the indexing drive motor 61 to output the rotational kinetic energy, and the indexing drive motor 61 outputs the rotational kinetic energy. The rotational kinetic energy output by the drive motor 61 drives the sampling needle body 51 to rotate in sequence through the directional telescopic rod 62 and the rotation shaft 54, until the oblique needle tip 52 of the sampling needle body 51 rotates to the required position, and the steering control button is released; when the steering control button is pressed again, it is regarded as a continuous pressing of the steering control button. At this time, the retraction process is not executed, and the rotational kinetic energy is directly output by the rotation drive motor 61 and driven to continue rotating the sampling needle body 51 through transmission, thereby effectively completing the required adjustment of the direction of the oblique needle tip 52 of the sampling needle body 51.

[0035] When the tissue sampling needle withdrawal process is performed, the needle withdrawal control button on the outer wall of the assembly base structure 1 is pressed, and the control module receives the needle withdrawal signal and outputs an instruction to control the advance and retreat drive motor 21 to output rotational kinetic energy in the reverse direction, thereby driving the sampling needle body 51 to perform the needle withdrawal process through a transmission action in the opposite direction to the needle advancement process, until the beveled needle tip 52 returns to the specified position, and then the needle withdrawal control button 11 is released.

[0036] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A deflection-correcting and direction-adjustable biopsy needle device for tissue sampling, characterized in that: include: The forward and backward driving structure has a first rotational kinetic energy output end portion capable of outputting rotational driving energy; An advance and retreat transmission structure, one end of which is threadedly assembled on the first rotational kinetic energy output end of the advance and retreat drive structure, and the advance and retreat transmission structure forms a screw structure through linear limit to output linear displacement kinetic energy; The sampling needle assembly is arranged on the advance and retreat transmission structure along the axial double-sided limited transfer assembly; The indexing drive structure has a second rotational kinetic energy output end capable of outputting rotational driving energy and an adaptive telescopic part transmission-assembled at the second rotational kinetic energy output end, and the adaptive telescopic part is transmission-assembled and connected to the sampling needle assembly at one end away from the indexing drive structure.

2. The deflection-correctable and direction-adjustable biopsy needle device for tissue sampling according to claim 1, characterized in that: The forward and backward driving structure includes an forward and backward driving motor and a transmission screw rod; The transmission screw is arranged to be transmission-fixedly connected between the first rotational kinetic energy output end of the advance-retract drive structure and the kinetic energy output end of the advance-retract drive motor; The forward and backward transmission structure includes a transmission nut seat and a driving limit plate; The transmission nut seat is threadedly assembled on the transmission screw rod; The driving limit plate is fixedly assembled and connected to the driving nut seat, and the driving limit plate cooperates with the driving screw to form a screw structure through linear limitation to output linear displacement kinetic energy; It also includes an advance and retreat guide structure, which includes a directional guide rail and a guide slide seat; The guide slide is slidably assembled on the directional guide rail, and the guide slide is fixedly assembled and connected with the driving limit plate.

3. The deflection-correctable and direction-adjustable biopsy needle device for tissue sampling according to claim 2, characterized in that: The forward and backward driving structure also includes a position adjustment and speed change component; The position adjustment and speed change assembly is configured as a multi-stage gear transmission assembly and / or a sprocket chain transmission assembly; The kinetic energy input end of the position-adjusting and speed-changing assembly is coaxially and fixedly connected to the kinetic energy output end of the forward and backward driving motor, and the kinetic energy output end of the position-adjusting and speed-changing assembly is coaxially and fixedly connected to the transmission screw; The transmission screw rod is correspondingly located at one side of the forward and backward driving motor.

4. The deflection-correctable and direction-adjustable biopsy needle device for tissue sampling according to claim 2, characterized in that: Also includes: Assembling the base structure; The base of the forward and backward driving motor is fixedly assembled on the assembly base structure; The transmission screw is assembled and arranged on the assembly base structure through a bearing member; The directional guide rail is fixedly assembled on the assembly base structure and is fully or partially exposed to the outside of the assembly base structure; The directional guide rail is provided with scales.

5. The deflection-correctable and direction-adjustable biopsy needle device for tissue sampling according to claim 4, characterized in that: It also includes a positioning baffle, which is fixed on the directional guide rail.

6. The deflection-correctable and direction-adjustable biopsy needle device for tissue sampling according to claim 5, characterized in that: The positioning baffle is also provided with a sound-generating device or a driving motor switch, which is located on the positioning baffle and can touch the driving limit plate.

7. The deflection-correctable and direction-adjustable biopsy needle device for tissue sampling according to claim 4, characterized in that: The sampling needle assembly comprises a sampling needle body, a beveled needle tip, a needle body adapter, a needle body limit seat and a transfer shaft; One end of the sampling needle body is provided with an oblique needle tip, and the oblique needle tip is a tissue sampling end with a specific orientation; The needle body limiting seats are arranged in two groups at intervals, and the two groups of needle body limiting seats are fixedly connected by the transfer shaft rod, and the transfer shaft rod transfer assembly is arranged on the driving limiting plate, and the two groups of needle body limiting seats are respectively and one by one correspondingly fitted and contacted with the two sides of the driving limiting plate to form a limiting effect; The other end of the sampling needle body is fixedly connected to the needle body connector, and the needle body connector is fixedly connected to one group of the needle body limit seats. The linear sliding displacement action of the driving limit plate synchronously drives the two groups of needle body limit seats, the needle body connector and the sampling needle body to complete the needle advancement and retraction process.

8. The deflection-correctable and direction-adjustable biopsy needle device for tissue sampling according to claim 7, characterized in that: The indexing drive structure includes an indexing drive motor; And the adaptive telescopic part of the indexing drive structure is arranged as a directional telescopic rod; The base of the indexing drive motor is fixedly assembled on the assembly base structure; The rotational kinetic energy output end of the indexing drive motor is connected to the one end of the directional telescopic rod by transmission and fixed connection as the second rotational kinetic energy output end of the indexing drive structure; The other end of the directional telescopic rod is fixedly connected to another group of the needle body limiting seats, and the directional telescopic rod, the transfer shaft rod, the needle body adapter and the sampling needle body are coaxially arranged correspondingly; It also includes an electric control structure, which includes a control button and an electric control module; The electric control module includes a mobile power source and a control module connected by a circuit; The control button is connected to the control input end of the control module via a circuit; The control buttons include a needle insertion control button, a needle withdrawal control button and a steering control button; The control output end of the control module is connected to a relay through a circuit, and the output end of the relay is respectively connected to the forward and backward drive motor and the indexing drive motor through a circuit.

9. A method for using the deflection-correcting and direction-adjustable biopsy needle device for tissue sampling as claimed in claim 8, characterized in that: The steps include: When the tissue sampling and needle insertion process is performed, the needle insertion control button is pressed, and the control module receives the needle insertion signal and outputs a command to control the forward and backward drive motor to output rotational kinetic energy. The rotational kinetic energy output by the forward and backward drive motor is transmitted to the transmission screw through the speed adjustment component based on the transmission ratio setting, so that the transmission screw rotates synchronously and further cooperates with the transmission nut seat to form a screw structure to drive the drive limit plate to slide along the directional guide rail along the straight line, and then the linear sliding displacement of the drive limit plate drives the sampling needle body to perform the needle insertion process until the oblique needle tip of the sampling needle body reaches the predetermined point, and the needle insertion control button is released to stop the needle insertion; When the tissue sampling needle withdrawal process is performed, the needle withdrawal control button is pressed, and the control module receives the needle withdrawal signal and outputs instructions to control the advance and retreat drive motor to output rotational kinetic energy in the reverse direction, thereby driving the sampling needle body to perform the needle withdrawal process through a transmission action in the opposite direction to the needle advancement process, until the beveled needle tip returns to the specified position, and the needle withdrawal control button is released.

10. The method for using the deflection-correcting and direction-adjustable biopsy needle device for tissue sampling according to claim 9, characterized in that: The following steps are also included: When the direction of the tissue sampling end of the sampling needle body needs to be adjusted after the tissue sampling needle insertion process is performed, the steering control button is pressed, and the control module receives the steering signal and outputs a command to control the advance and retreat drive motor to output rotational kinetic energy in the opposite direction of the needle insertion rotation direction, and the sampling needle body is driven to retreat through the transmission action in the opposite direction of the needle insertion process, and the retreat distance of the sampling needle body is not less than the extension length of its bevel needle tip; Afterwards, the control module continues to output instructions to control the indexing drive motor to output rotational kinetic energy. The rotational kinetic energy output by the indexing drive motor drives the sampling needle body to index through the directional telescopic rod and the indexing shaft rod in turn, until the oblique needle tip of the sampling needle body is rotated to the required position, and then the steering control button is released; When the steering control button is pressed again, it is regarded as a continuous pressing of the steering control button. At this time, the retraction process is not performed, and the rotational kinetic energy is directly output by the indexing drive motor and transmitted to drive the sampling needle body to continue to index, thereby effectively completing the required adjustment of the bevel needle tip direction of the sampling needle body.

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