WO2024012039A1 - 具有三种使用模式的活检针 - Google Patents

具有三种使用模式的活检针 Download PDF

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Publication number
WO2024012039A1
WO2024012039A1 PCT/CN2023/093918 CN2023093918W WO2024012039A1 WO 2024012039 A1 WO2024012039 A1 WO 2024012039A1 CN 2023093918 W CN2023093918 W CN 2023093918W WO 2024012039 A1 WO2024012039 A1 WO 2024012039A1
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WO
WIPO (PCT)
Prior art keywords
needle
loading
seat
inner needle
base
Prior art date
Application number
PCT/CN2023/093918
Other languages
English (en)
French (fr)
Inventor
曾庆源
曾伟华
冯波
Original Assignee
经方精密医疗（深圳）有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 经方精密医疗（深圳）有限公司 filed Critical 经方精密医疗（深圳）有限公司
Publication of WO2024012039A1 publication Critical patent/WO2024012039A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • A61B10/02—Instruments for taking cell samples or for biopsy
    • A61B10/0233—Pointed or sharp biopsy instruments
    • A61B10/0266—Pointed or sharp biopsy instruments means for severing sample
    • A61B10/0275—Pointed or sharp biopsy instruments means for severing sample with sample notch, e.g. on the side of inner stylet
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • A61B10/02—Instruments for taking cell samples or for biopsy
    • A61B2010/0208—Biopsy devices with actuators, e.g. with triggered spring mechanisms

Definitions

  • This application relates to medical devices and, more specifically, to a biopsy needle with three modes of use.
  • biopsy needles are divided into manual biopsy needles, semi-automatic biopsy needles and fully automatic biopsy needles.
  • the existing fully automatic biopsy needles have a relatively single excitation mode. They can only excite once or twice. The excitation operation methods are also limited, making it inconvenient for users to choose the most appropriate excitation mode according to different situations. and mode of operation.
  • the technical problem to be solved by this application is to provide a biopsy needle with three usage modes and easy operation in view of the above-mentioned defects of the prior art.
  • the technical solution adopted by this application to solve the technical problem is to propose a biopsy needle, which includes an upper cover, a base, an inner needle assembly and an outer needle assembly.
  • the inner needle assembly includes an inner needle seat and a needle fixedly mounted on the inner needle.
  • the inner needle of the seat, the outer needle assembly includes an outer needle seat and an outer needle fixedly installed on the outer needle seat.
  • the inner needle seat and the outer needle seat are respectively reciprocally slidable and elastic in the needle insertion direction.
  • the loading method is installed in the combined upper cover and base. The inner needle and the outer needle protrude from the front end of the combined upper cover and base in the needle insertion direction, and the inner needle is passed through the outer needle.
  • the biopsy needle also includes a loading component, a first rear excitation component, a second rear excitation component, a first side excitation component and a second side excitation component, wherein: the loading component is reciprocally slidable in a direction parallel to the needle insertion direction.
  • the loading assembly and the outer needle seat are respectively provided with a first loading matching structure that cooperates to drive the outer needle seat to be elastically loaded into place when the loading assembly slides backward.
  • the loading assembly and the inner needle The needle seats are respectively provided with a second loading matching structure that cooperates after the outer needle needle seat is loaded in place to drive the inner needle needle seat to be elastically loaded in place when the loading assembly slides backward; the first rear excitation component and the second rear excitation component The rear ends in the needle insertion direction are respectively installed in the combined upper cover and base.
  • the first rear excitation component is provided with a third element that can act on the inner needle seat to prompt the inner needle seat to release the loading state and be excited.
  • the first The second activating component is configured to act on the outer needle needle seat to prompt the outer needle needle seat to release the loading state and be excited, and can act on the inner needle needle seat to urge the inner needle needle seat when the inner needle needle seat is not excited.
  • the second rear excitation button is activated when the loading state is released; the first side excitation component and the second side excitation component are respectively installed on one side of the combined upper cover and base in the needle insertion direction, and the first side excitation component
  • the side excitation component is provided with a first side excitation button that can act on the inner needle seat to urge the inner needle needle seat to release the loading state and be activated
  • the second side excitation component is provided with a first side excitation button that can act on the outer needle seat to urge the outer needle seat to be activated.
  • the second side firing button is activated when the needle seat is released from the loading state and can act on the inner needle seat to urge the inner needle seat to release the loading state and be activated when the inner needle seat is not activated.
  • the loading assembly includes a loading button, a loading seat and a first return spring.
  • the loading seat is slidably installed on the opening of the upper cover and extends in a direction parallel to the needle insertion direction.
  • the loading button is fixedly connected to the loading seat and exposed outside the upper cover.
  • the first return spring is arranged between the loading seat and the upper cover to urge the loading seat to slide backward along the loading chute.
  • the loading base is reset.
  • the first loading fitting structure includes a loading rod extending downward from the front end of the loading seat and a loading boss protruding on the outer needle seat, and the The loading seat slides backward along the loading chute to cause the loading rod to abut the loading boss, thereby driving the outer needle seat to slide backward and load into place.
  • the second loading fitting structure includes two loading V-grooves disposed on both sides of the rear end of the loading seat and two loading V-grooves extending forward from the inner needle seat. Tongue pieces, a connecting rod is connected between the two tongue pieces, and the outer needle needle seat is also provided with a connecting rod that is inserted between the two tongue pieces of the inner needle needle seat after being loaded in place to push up the connecting rod so that the The two tongues and the two loading V-grooves reach a matching action rod, and the loading seat slides backward along the loading chute to make the two loading V-grooves offset the two tongues of the inner needle base, thereby driving the inner needle. The seat slides backwards to load into place.
  • the inner needle needle seat is provided with a first elastic piece extending obliquely forward in the needle insertion direction on one side of the inner needle needle seat.
  • An inner needle loading spring is provided between the base and the base. The inner needle base is driven by the loading assembly and slides backward until the front end of the first elastic piece contacts the corresponding first loading limit surface in the base.
  • the inner needle seat is loaded into place; the corresponding side of the outer needle seat in the needle insertion direction is provided with a second elastic piece extending obliquely forward in the needle insertion direction, between the outer needle seat and the base
  • An outer needle loading spring is provided, and the outer needle needle seat is driven by the loading assembly and slides backward until the front end of the second spring piece contacts the corresponding second loading limit surface in the base. Loaded in place.
  • the first rear firing button and the second rear firing button are installed on the left and right sides of the rear end of the base in a pressable and elastically resettable manner; the first rear firing button
  • the rear firing button is provided with a first rear firing piece extending toward the first elastic piece of the inner needle seat.
  • the first rear firing button is pressed, the first rear firing piece is pushed forward to abut against the first loading limit.
  • the first elastic piece on the plane is released by urging the first elastic piece to break away from the first loading limiting surface.
  • the second rear excitation button is provided with a second elastic piece extending toward the second spring piece of the outer needle needle seat.
  • the second rear activating member when the second rear activating button is pressed, pushes forward the first elastic piece of the inner needle needle seat that has not yet been activated and is in contact with the first loading limit surface to urge the first elastic piece.
  • the first loading limit surface is separated from the first loading limit surface and the limit is released, so that the inner needle needle seat and the inner needle are activated under the action of the inner needle loading spring elastic force.
  • the second rear activating part is continued to be pressed when the second rear activating button is pressed.
  • the first side firing button and the second side firing button are both installed in an installation position formed on one side of the combined upper cover and base in a manner that can slide forward and backward. ;
  • the first side firing button is fixedly connected to the first rear firing piece of the first rear firing button, and the second side firing button is fixedly connected to the second rear firing piece of the second rear firing button.
  • the first side excitation button and the second side excitation button are both depressible and elastically resettable and are installed on the joint formed on one side of the combined upper cover and base.
  • the first side excitation button is pressed, the first spring piece abutting against the first loading limit surface is pushed inward to urge the first spring piece to break away from the first loading limit surface and release the limit, so that all The inner needle seat and the inner needle are activated under the elastic force of the inner needle loading spring; when the second side excitation button is pressed, the inner needle seat that has not yet been activated is pushed inward to abut against the first loading limiter.
  • the first elastic piece on the surface is used to urge the first elastic piece to break away from the first loading limit surface and release the limit, so that the inner needle needle seat and the inner needle are activated under the action of the inner needle loading spring elastic force, and the second side activating button
  • the second spring piece of the outer needle base that is in contact with the second loading limit surface is pushed inward to urge the second spring piece to break away from the second loading limit surface and release the limit, so that the outer needle base and the outer needle base are The needle is activated under the elastic force of the spring loaded on the outer needle.
  • the inner needle is fixedly arranged on the lower end of the inner needle needle seat
  • the outer needle is fixedly arranged on the lower end of the outer needle needle seat
  • the inner needle needle seat and the outer needle seat are The needle seat is limited up, down, left, and right in the internal space where the upper cover and the base are combined and can only move forward and backward along the needle insertion direction.
  • the combined upper cover and base are further provided with a partition that separates the first rear firing button and the second rear firing button.
  • the biopsy needle according to the embodiment of the present application realizes the sequential loading of both the outer needle assembly and the inner needle assembly through a loading assembly, and separate settings are provided for the inner needle assembly and the outer needle assembly.
  • the first rear excitation assembly, the first side excitation assembly and the second rear excitation assembly, the second side excitation assembly excite the inner needle assembly through the first rear excitation assembly or the first side excitation assembly, and the second rear excitation assembly or the second
  • the side excitation assembly excites the outer needle assembly, and when the inner needle assembly is not excited, the inner needle assembly can also be excited by the second rear excitation assembly or the second side excitation assembly.
  • This provides three usage modes: fully automatic excitation mode, delayed fully automatic excitation mode and fully automatic leading range mode for users to choose according to actual needs, and allows users to flexibly choose rear excitation or side excitation operation according to actual conditions.
  • Figure 1 is a schematic diagram of the overall structure of a biopsy needle with three usage modes according to the first embodiment of the present application
  • Figure 2 is a schematic structural diagram of the upper cover of the biopsy needle shown in Figure 1;
  • Figure 3 is a schematic structural view of the upper cover shown in Figure 2 from another angle;
  • Figure 4 is a schematic structural view of the base of the biopsy needle shown in Figure 1;
  • Figure 5 is a schematic structural view of the base shown in Figure 4 from another angle;
  • Figure 6 is a schematic structural diagram of the loading base in the first embodiment of the present application.
  • Figure 7 is a schematic structural diagram of the loading base shown in Figure 6 from another angle;
  • Figure 8 is a schematic structural diagram of the inner needle hub in the first embodiment of the present application.
  • Figure 9 is a structural cross-sectional view of the inner needle hub shown in Figure 8.
  • Figure 10 is a schematic structural diagram of the outer needle hub in the first embodiment of the present application.
  • Figure 11 is a structural cross-sectional view of the outer needle hub shown in Figure 10;
  • Figure 12 is a partial structural cross-sectional view of the inner needle seat, the upper cover and the base in the first embodiment of the present application;
  • Figure 13 is a partial structural cross-sectional view of the outer needle seat, the upper cover and the base in the first embodiment of the present application;
  • Figure 14 is a structural cross-sectional view of the biopsy needle according to the first embodiment of the present application, with both the inner needle assembly and the outer needle assembly in their initial state;
  • Figure 15 is a structural cross-sectional view of the outer needle assembly of the biopsy needle in a loaded state according to the first embodiment of the present application;
  • Figure 16 is a structural cross-sectional view of the biopsy needle according to the first embodiment of the present application, with both the outer needle assembly and the inner needle assembly in a loaded state;
  • Figure 17 is a schematic structural diagram of the first post-excitation component in the first embodiment of the present application.
  • Figure 18 is a schematic structural diagram of the second post-excitation component in the first embodiment of the present application.
  • Figure 19 is a schematic diagram of the internal structure of the biopsy needle according to the first embodiment of the present application after removing the upper cover and the loading assembly thereon;
  • Figure 20 is a schematic diagram of the overall structure of a biopsy needle with three usage modes according to the second embodiment of the present application.
  • Figure 21 is a schematic diagram of the internal structure of the biopsy needle shown in Figure 20 after removing the upper cover and the loading assembly thereon.
  • FIG. 1 shows a schematic diagram of the overall structure of a biopsy needle 100 with three usage modes according to the first embodiment of the present application.
  • the biopsy needle 100 with three usage modes mainly consists of an upper cover 10, a base 20, an inner needle assembly 30, an outer needle assembly 40, a loading assembly 50, a first rear excitation assembly 60, a second rear excitation assembly
  • the assembly 70, the first side excitation assembly 80 and the second side excitation assembly 90 are constituted.
  • the upper cover 10 and the base 20 are combined to enclose the internal space.
  • the inner needle assembly 30 and the outer needle assembly 40 are respectively installed in the upper cover 10 and the base 20 in a reciprocally sliding and elastically loaded manner in the needle insertion direction.
  • the inner needle assembly The inner needle 31 of 30 and the outer needle 41 of the outer needle assembly 40 protrude from the front end of the upper cover 10 and the base 20 in the needle insertion direction, and the inner needle 31 is inserted into the outer needle 41.
  • the loading assembly 50 is disposed on the upper cover 10 in a slidable manner in a direction parallel to the needle insertion direction, and is used to sequentially exert a backward movement force on the outer needle assembly 40 and the inner needle assembly 30 to make the outer needle assembly 40 and the inner needle assembly 30 move backward.
  • the inner needle assembly 30 is in a loaded state.
  • the first rear excitation component 60 and the second rear excitation component 70 are respectively arranged left and right at the rear ends of the upper cover 10 and the base 20 in the needle insertion direction.
  • the first side excitation component 80 and the second side excitation component 90 are respectively arranged front and rear.
  • the cloth is arranged on the left side of the upper cover 10 and the base 20 .
  • the first rear excitation component 60 is used to act on the inner needle assembly 30 to release the inner needle assembly 30 from the loading state and be excited.
  • the first side excitation component 80 is also used to act on the inner needle assembly 30 to cause the inner needle assembly to be excited. 30 is fired when unloading state.
  • the second rear activating component 70 is used to act on the outer needle assembly 40 to release the outer needle assembly 40 from the loading state and be activated.
  • the second rear activating component 70 is also used to act on the inner needle assembly 30 when the inner needle assembly 30 is not activated.
  • the biopsy needle 100 according to the first embodiment of the present application realizes three usage modes through the cooperation of the loading assembly 50 with the first rear excitation assembly 60 , the second rear excitation assembly 70 , the first side excitation assembly 80 and the second side excitation assembly 90 , it is convenient for doctors to choose the most suitable excitation mode according to different situations and provide patients with the most timely and suitable biopsy plan. A more detailed introduction will be given below in conjunction with Figures 2 to 19.
  • the upper cover 10 and the base 20 are combined through matching buckle positioning structures.
  • the upper cover 10 is provided with a plurality of buckles 111 along its inner circumference and two first positioning posts 112 at the rear end.
  • the base 20 is provided with a plurality of buckle grooves 211 along its inner circumference and is provided with a plurality of buckle grooves 211 at the rear end.
  • Two positioning holes 212 Insert the two first positioning posts 112 of the upper cover 10 into the two positioning holes 212 of the base 20 and engage the plurality of buckles 111 with the plurality of buckle grooves 211, so that the upper cover 10 can be Combined with base 20.
  • the upper cover 10 and the base 20 are respectively provided with a first needle outlet fitting part 12 and a second needle outlet fitting part 22 at the front ends in the needle insertion direction. After the upper cover 10 and the base 20 are combined, they are surrounded and formed close to the base.
  • the needle outlet at the lower end of 20 is used for the outer needle 41 and the inner needle 31 inserted in the outer needle 41 to be loaded and recovered or stimulated to eject through the needle outlet.
  • the first needle outlet fitting 12 is provided at the lower end of the support arm 121 extending downward from the front end of the upper cover 10, and the end of the support arm 121 is also in the first needle outlet fitting.
  • the front end of the base 20 has positioning grooves 233 on both sides of the second needle outlet fitting 22 .
  • the second positioning post 122 is embedded in the positioning groove 233 to prevent the front end of the biopsy needle 100 from being deformed after the assembly is completed.
  • the first needle outlet fitting 12 and the second needle outlet fitting 22 cooperate The formed needle outlet is disposed close to the lower end of the base 20, making it easier for the inner needle 31 and the outer needle 41 to be used in conjunction with auxiliary equipment such as ultrasonic probes.
  • a limiting structure is provided that allows the inner needle seat 32 and the outer needle seat 42 to slide back and forth without causing deflection, so as to ensure that the inner needle 31 and the outer needle 41 will not be deflected causing the needle to come out smoothly.
  • the rear end of the upper cover 10 in the needle insertion direction is provided with a partition 13 extending toward the base 20, and the rear end of the base 20 is provided with a slot 234 for the partition 13 to be inserted.
  • the partition 13 is inserted into the slot 234 to divide the open space at the rear end of the base 20 into two left and right parts, respectively used for installing the first rear excitation assembly 60 and the second rear excitation assembly 70 .
  • the left side of the upper cover 10 is provided with first mounting slots 161 and second mounting slots 162 arranged front and back along the needle insertion direction
  • the left side of the base 20 is provided with corresponding third mounting slots 231 and 231 arranged front and back along the needle insertion direction.
  • the fourth mounting slot 232 is formed by the first mounting slot 161 and the third mounting slot 231 after the upper cover 10 and the base 20 are combined to form a mounting position for installing the first side excitation assembly 80.
  • the second mounting slot 162 and the fourth mounting slot 232 are The mounting grooves 232 collectively surround and form a mounting position for mounting the second side excitation assembly 90 .
  • the inner needle assembly 30 is mainly composed of an inner needle 31 , an inner needle seat 32 and an inner needle loading spring 33 .
  • the inner needle 31 is a solid needle bar.
  • the front end of the inner needle 31 is provided with a sampling slot 311.
  • the rear end of the inner needle 31 is fixedly mounted on the inner needle seat 32 in the needle insertion direction.
  • the lower end (for example, fixed by adhesive or integral injection molding), so that the inner needle 31 can move together with the inner needle base 32 .
  • the inner needle needle seat 32 is provided with an upwardly extending first identification post 326 at the upper end in the needle insertion direction, and is provided with two tongues 324a and 324b extending forward horizontally at a certain distance apart on the front side of the upper end.
  • a connecting rod 325 is connected between the tongue pieces 324a and 324b, a loading ramp 3241 is formed at the front end of the two tongue pieces 324a and 324b, and a groove 3242 is formed on the upper surface of the rear end of the two tongue pieces 324a and 324b respectively.
  • the inner needle needle seat 32 extends a first elastic piece 323 from the left side in the needle insertion direction toward the oblique front in the needle insertion direction, and the front end of the first elastic piece 323 forms a first contact surface 3231.
  • the inner needle seat 32 forms a first guide groove 327 on the right side in the needle insertion direction, and the first guide groove 327 extends along the needle insertion direction.
  • the inner needle seat 32 is still at the rear end in the needle insertion direction.
  • a first spring installation hole 328 is opened, and a first spring guide post 3281 is provided in the first spring installation hole 328 for installing the inner needle loading spring 33 . As shown in FIGS.
  • the inner needle seat 32 is slidably installed relative to the outer needle seat 42 at the rear of the internal space where the upper cover 10 and the base 20 are combined.
  • the left and right sides of the base 20 are provided with upwardly extending first limiting bosses 241 and second limiting bosses 242 for the inner needle seat 32.
  • the left and right sides of the upper cover 10 are provided with upwardly extending first and second limiting bosses 241 for the inner needle seat 32.
  • the guide boss 181 and the limiting rib 182 extend downward.
  • Both sides of the inner needle seat 32 are respectively provided with two left and right side surfaces 321 which are in contact with the first limiting boss 241 and the second limiting boss 242 relative to the inner surfaces for left and right limiting.
  • the two sides of the inner needle seat 32 are There are also bottom surfaces 322 respectively provided on the side to support the upper end surfaces of the first limiting boss 241 and the second limiting boss 242 for downward limitation.
  • the guide boss 181 in the upper cover 10 is slid into the inner needle seat 32 In the first guide groove 327, the limiting rib 182 resists the upper end surface of the inner needle seat 32, thereby not only providing guidance in the needle insertion direction but also limiting the inner needle seat 32 upward (see Figure 12 ).
  • the inner needle seat 32 is limited in the internal space of the upper cover 10 and the base 20 and can only move forward and backward along the needle insertion direction without causing axial deflection.
  • the front end of the inner needle loading spring 33 is mounted in the first spring mounting hole 328 of the inner needle needle seat 32, and the rear end of the inner needle loading spring 33 is fitted in the first spring mounting hole 328 provided in the base 20. It is inside the seat 261 and is supported by the first spring support platform 2611 (see Figure 5). If force is applied to move the inner needle seat 32 backward, the inner needle loading spring 33 will be compressed.
  • the outer needle assembly 40 is mainly composed of an outer needle 41 , an outer needle seat 42 and an outer needle loading spring 43 .
  • the outer needle 41 is a hollow needle tube, and the rear end of the outer needle 41 is fixed to the lower end of the outer needle base 42 in the needle insertion direction so as to move together with the outer needle base 42 .
  • the upper end of the outer needle needle seat 42 in the needle insertion direction is provided with a loading boss 422.
  • the front end of the loading boss 422 forms a loading mating surface 4221.
  • An action rod 424 extends horizontally backward from the rear end of the loading boss 422.
  • the rear end of 424 forms an effective slope 4241, and the loading boss 422 is also provided with a second identification column 425 extending upward.
  • the outer needle needle seat 42 extends a second elastic piece 423 from the left side in the needle insertion direction toward the oblique front in the needle insertion direction, and the front end of the second elastic piece 423 forms a second abutment surface 4231.
  • the outer needle seat 42 forms a second guide groove 426 on the right side in the needle insertion direction, and the second guide groove 426 extends along the needle insertion direction.
  • the outer needle needle seat 42 also has a second spring installation hole 427 at the rear end in the needle insertion direction, and a second spring guide post 4271 is provided in the second spring installation hole 427 for installing the outer needle loading spring 43 .
  • the outer needle seat 42 is slidably installed relative to the inner needle seat 32 at the front of the internal space where the upper cover 10 and the base 20 are combined.
  • the front end of 41 passes through the needle outlet formed by the upper cover 10 and the base 20 through the sleeve 411 to ensure coaxiality.
  • the inner needle 31 is inserted into the outer needle 41 from the rear end of the outer needle 41. In the initial state, the inner needle 31
  • the front-end sampling slot 311 is stored in Inside the front end of the outer needle 41.
  • the left and right sides of the base 20 are provided with upwardly extending third limiting bosses 243 and fourth limiting bosses 244 for the outer needle seat 42.
  • the guide bosses 181 and limiting ribs 182 are also provided in the upper cover 10. It extends to the outer needle needle seat 42 along the needle insertion direction. Both sides of the outer needle base 42 are respectively provided with two left and right side surfaces 4212 which fit against the inner surfaces of the third limiting boss 243 and the fourth limiting boss 244 for left and right limiting. There are also bottom surfaces 4211 respectively provided on the sides to support the upper end surfaces of the third limiting boss 243 and the fourth limiting boss 244 for downward limiting. At the same time, the guide boss 181 extending downward from the upper cover 10 is slidably inserted into the outer needle.
  • the limiting rib 182 resists the upper end surface of the inner needle seat 32, thereby not only providing guidance in the needle insertion direction but also limiting the outer needle seat 42 upward.
  • the outer needle seat 42 is limited in the internal space of the upper cover 10 and the base 20 and can only move forward and backward along the needle insertion direction without causing axial deflection.
  • the front end of the outer needle loading spring 43 is mounted in the second spring mounting hole 427 of the outer needle needle seat 42, and the rear end of the outer needle loading spring 43 is fitted in the second spring provided in the base 20.
  • the second spring of the mounting base 262 is mounted on the post 2621.
  • the outer needle loading spring 43 will be compressed.
  • the outer needle seat 42 is moved backward until the second contact surface 4231 at the front end of the second spring piece 423 contacts the base 20
  • the second loading limiting surface 272 (see Figure 5) is provided on the inner wall, the outer needle base 42 is loaded into place, and the elastic force of the outer needle loading spring 43 urges the second contact surface 4231 of the second elastic piece 423 to press against the base.
  • the loading assembly 50 is mainly composed of a loading button 51 , a loading seat 52 and a first return spring 53 .
  • the front part of the upper cover 10 is provided with a loading chute 14 extending in a direction parallel to the needle insertion direction.
  • the loading seat 52 is slidably installed in the loading chute 14 .
  • the loading button 51 is fixedly connected to the loading seat 52 and exposed on the upper cover 10 Externally, applying a backward force to the loading button 51 can drive the loading seat 52 to move backward along the loading chute 14, thus acting on the outer needle seat 42 or the inner needle seat 32 to cause the outer needle assembly 40 or the inner needle to The assembly 30 is loaded in place, and the elastic force of the first return spring 53 prompts the loading seat 52 and the loading button 51 to return to the initial position after the backward force is released.
  • the loading base 52 is provided with a loading slider 522 on its upper end surface 521, and a T-shaped boss 523 is provided in the middle of the loading slider 522.
  • a first limiting hole 524a and a second limiting hole 524b are provided on both sides of the platform 523.
  • the loading seat 52 is also provided with two loading V-grooves 525a and 525b on both sides of the rear end in the needle insertion direction, which match the two tongues 324a and 324b of the inner needle seat 32, and the front end in the needle insertion direction.
  • a loading rod 526 that matches the loading boss 422 of the outer needle base 42 extends downward.
  • the loading base 52 is slidably installed in the loading chute 14 of the upper cover 10 through the loading slider 522.
  • the upper end surface 521 of the loading base 52 offsets the inner surface of the upper cover 10 to perform upward positioning.
  • the button 51 is provided with two elastic buckles 511a and 511b corresponding to the T-shaped boss 523 to buckle the T-shaped boss 523 for upper and lower limits.
  • the loading button 51 is also provided with a first limiting post 512a and a second limiting post. The position post 512b is inserted into the first limiting hole 524a and the second limiting hole 524b on the loading slider 522, thereby ensuring that the loading button 51 is fixedly installed on the loading base 52. Moving the loading button 51 can drive the loading base 52 to load along the The chute 14 moves forward and backward.
  • a third spring mounting post 527 is provided at the bottom of the loading seat 52
  • a fourth spring mounting post 17 is provided inside the upper cover 10 in front of the loading seat 52
  • both ends of the first return spring 53 They are respectively hooked to the third spring mounting post 527 and the fourth spring mounting post 17.
  • Applying a backward force to move the loading seat 52 backward along the loading chute 14 will stretch the return spring 53, so the backward force After the force is released, the return spring 53 moves forward with the loading seat 52 to reset.
  • a stopper 5271 is provided on the outer periphery of the third spring mounting post 572 to prevent the first return spring 53 from coming out.
  • the loading assembly 50, the inner needle assembly 30 and the outer needle assembly 40 are all In the initial state, the sampling groove 311 of the inner needle 31 is stored in the front end of the outer needle 41.
  • applying a backward force on the loading button 51 can drive the loading base 52 to move backward along the loading chute 14.
  • the loading base 52 The loading surface 5261 of the loading rod 526 whose front end extends downward will first contact the loading mating surface 4221 at the front end of the loading boss 422 of the outer needle seat 42, thereby driving the outer needle seat 42 and the outer needle 41 to move backward together.
  • the action rod 424 at the rear end of the outer needle seat 42 is inserted into the space between the two tongues 324a and 324b of the inner needle seat 32.
  • the outer needle seat 42 is moved backward until the second contact surface 4231 at the front end of the second elastic piece 423 abuts against the second loading limiting surface 272 provided on the inner wall of the base 20, the outer needle seat 42 is loaded in place.
  • the second identification post 425 on the outer needle base 42 is exposed from the loading chute 14 for the user to observe and confirm. Then, apply a backward force on the loading button 51 again to drive the loading base 52 to move backward along the loading chute 14. Since the outer needle base 42 has been moved backward and loaded into place, the loading rod 526 at the front end of the loading base 52 no longer acts.
  • the loading V grooves 525a and 525b at the rear end of the loading seat 52 will respectively offset the loading slopes 3241 at the front ends of the two upwardly inclined tongues 324a and 324b of the inner needle seat 32, thereby driving the inner needle seat 32 and the inner needle 31 together. Move later. When the inner needle seat 32 is moved backward until the first contact surface 3231 at the front end of the first spring piece 323 abuts against the first loading limiting surface 271 provided on the inner wall of the base 20, the inner needle seat 32 is loaded in place.
  • the loading assembly 50 is reset to the initial position under the action of the first return spring 53, the inner needle loading spring 33 is compressed, and the inner needle 31 follows the inner needle.
  • the needle seat 32 moves back together, and the sampling groove 311 of the inner needle 31 is stored in the front end of the outer needle 41.
  • the inner needle seat 32 is loaded in place, as shown in Figure 16, the inner needle seat 32
  • the first identification pillar 326 is just exposed from the observation window 191 opened on the upper cover 10, so that the user can observe and confirm.
  • the biopsy needle 100 of the first embodiment of the present application is formed by disposing the loading rod 526 on the loading seat 52 and the loading boss 422 on the outer needle seat 42 between the loading assembly 50 and the outer needle assembly 40
  • the first loading fitting structure realizes the elastic loading of the outer needle assembly 40 by disposing the loading V-grooves 525a and 525b on the loading base 52 and the tongues on the inner needle seat 32 between the loading assembly 50 and the inner needle assembly 30
  • the second loading fit structure formed by the cooperation of 324a and 324b realizes the elastic loading of the inner needle assembly 30, and only after the outer needle assembly 40 is loaded in place can the second loading fit structure between the loading assembly 50 and the inner needle assembly 30 be achieved.
  • the biopsy needle 100 of the first embodiment of the present application not only realizes the loading of both the outer needle assembly 40 and the inner needle assembly 30 through a loading assembly 50, but also realizes the loading of the outer needle assembly 40 and the inner needle through a loading assembly 50.
  • Components 30 are loaded sequentially.
  • the first loading fitting structure between the loading assembly 50 and the outer needle assembly 40 and the second loading fitting structure between the loading assembly 50 and the inner needle assembly 30 are not limited to those shown in the figures.
  • the specific structure of the first embodiment can also adopt various other suitable matching structural forms, as long as the outer needle assembly 40 and the inner needle assembly 30 can be loaded sequentially through one loading assembly 50 .
  • the first rear firing assembly 60 is mainly composed of a first rear firing button 61 and a second return spring 65.
  • the first rear firing button 61 is depressibly installed on the base 20 with an open rear end. The left side in the space is pressed and reset by the second return spring 65 .
  • a first pressing chute 62 is provided at the bottom of the first rear firing button 61, and a fifth spring mounting post 63 and a first rear firing member 64 are respectively provided at the front end of the first rear firing button 61.
  • the rear excitation member 64 is preferably a rod-shaped member extending toward the left front, and the front end forms a first rear excitation surface 641 .
  • the first side excitation assembly 80 includes a first side excitation button 81 and a first excitation connecting rod 82, which is fixedly connected to the front end of the first rear excitation member 64 through the first excitation connecting rod 82, thereby being integrated with the first rear excitation assembly 60.
  • a first fitting surface 2814 is formed on the right side of the bottom of the base 20 and a first bump 2811 is provided on the first fitting surface 2814 for insertion.
  • the base 20 is also provided with a guide chute 283 (see Figure 5).
  • the first rear activating member 64 of the first rear activating button 61 is placed in the guide chute 283.
  • the guide chute 283 provides a guiding function for forward movement.
  • One end of the second return spring 65 is sleeved on the fifth spring mounting post 63 to offset the first rear excitation button 61 , and the other end of the second return spring 65 is sleeved on the sixth spring of the third spring mounting seat 2812 provided in the base 20 On the mounting post 2813 (see Figure 5).
  • applying force to press the first rear firing button 61 forward can cause the first rear firing button 61 to move forward along the first pressing chute 62 , thereby causing the first rear firing surface 641 of the first rear firing member 64 to move forward.
  • the piece 323 urges the first elastic piece 323 to break away from the first loading limiting surface 271 and release the limiting position, so that the inner needle seat 32 and the inner needle 31 are excited under the elastic force of the inner needle loading spring 33 .
  • the first rear firing button 61 can be reset under the elastic force of the second return spring 65 .
  • the first side firing button 81 of the first side firing assembly 80 is installed in a manner that can slide forward and backward when the first rear firing assembly 60 is installed in place.
  • the mounting groove 161 and the third mounting groove 231 jointly surround the formed mounting position.
  • Applying force to push the first side firing button 81 forward can also drive the first rear firing button 61 to move forward along the first pressing chute 62 , thereby releasing the loading of the inner needle assembly 30 through the first rear firing piece 64 .
  • the first side excitation button 81 can be reset under the elastic force of the second return spring 65 .
  • the second rear firing assembly 70 is mainly composed of a second rear firing button 71 and a third return spring 75.
  • the second rear firing button 71 is depressibly installed on the base 20 with an open rear end. The right side of the space is pressed and reset by the third return spring 75 .
  • a second pressing chute 72 is provided at the bottom of the second rear firing button 71, and a seventh spring mounting post 73 and a second rear firing piece 74 are respectively provided at the front end of the second rear firing button 71.
  • the rear excitation member 74 is preferably a rod-shaped member extending toward the left front, and the front end forms a second rear excitation surface 741 .
  • the second rear excitation member 74 also forms a third rear excitation surface 742 at a corresponding position behind the second rear excitation surface 741 .
  • the second side excitation assembly 90 includes a second side excitation button 91 and a second excitation connecting rod 92.
  • the second side excitation connecting rod 92 is fixedly connected to the front end of the second rear excitation member 74, thereby being integrated with the second rear excitation assembly 70.
  • One body. Referring further to Figure 19 combined with Figure 5, the second rear firing button 71 is installed in the base 20.
  • a second fitting surface 2824 is formed on the left side of the bottom of the base 20 and a second bump 2821 is provided on the second fitting surface 2824 for insertion.
  • the second pressing chute 72 of the second rear firing button 71 so that the bottom surface of the second rear firing button 71 and the second fitting surface 2824 of the base 20 form a fitting assembly and can be connected to the second pressing groove through the second bump 2821
  • the cooperation of the chute 72 enables forward and backward sliding.
  • the second rear activating member 74 of the second rear activating button 71 is stacked above the first rear activating member 64 in the guide chute 283 in the base 20. 283 provides guidance for forward movement.
  • One end of the third return spring 75 is sleeved on the seventh spring mounting post 73 to offset the second rear excitation button 71 , and the other end of the third return spring 75 is sleeved on the eighth spring of the fourth spring mounting seat 2822 provided in the base 20 Mount on post 2823 (see Figure 5).
  • applying the force to press the second rear firing button 71 forward can cause the second rear firing button 71 to move forward along the second pressing chute 72 , thereby first causing the third rear firing surface of the second rear firing member 74 to move forward.
  • the second side firing button 91 of the second side firing assembly 90 is installed in a manner that can slide forward and backward when the second rear firing assembly 70 is installed in place.
  • the mounting groove 162 and the fourth mounting groove 232 jointly surround the formed mounting position. Applying force to push the second side activating button 91 forward can also drive the second rear activating button 71 to move forward along the second pressing slide 72, thereby releasing the load of the outer needle assembly 40 through the second rear activating member 74.
  • the load on the inner needle assembly 30 can be released to activate the inner needle 31 even when the inner needle assembly 30 has not been activated.
  • the second side excitation button 91 can be reset under the elastic force of the third return spring 75 .
  • a first limiting platform 183 a and a second limiting platform 183 b extend downward in the upper cover 10 facing the second return spring 65 and the third returning spring 75 .
  • the first limiting platform 183a and the second limiting platform 183b just limit the second return spring 65 and the third return spring 75 from above to prevent them from coming out and improve the smoothness of pressing.
  • the biopsy needle 100 of the first embodiment of the present application is provided with a first rear excitation component 60 and a second rear excitation component 70 for the inner needle assembly 30 and the outer needle assembly 40 respectively.
  • the first rear excitation component 60 acts on The inner needle assembly 30 causes the inner needle assembly 30 to release the loading state and be excited.
  • the second rear activating assembly 70 acts on the outer needle assembly 40 to cause the outer needle assembly 40 to release the loading state and be excited.
  • the inner needle assembly 30 has not yet been excited.
  • the second rear activating component 70 can also be used to act on the inner needle assembly 30 to release the inner needle assembly 30 from the loading state and be activated.
  • the biopsy needle 100 of the first embodiment of the present application is also provided with a first side excitation assembly 80 and a second side excitation assembly 90 for the inner needle assembly 30 and the outer needle assembly 40 respectively, and the first side excitation assembly 80 is connected with the first side excitation assembly 80 .
  • the rear excitation component 60 is linked, and the second side excitation component 90 is linked with the second rear excitation component 70.
  • the first side excitation component 80 acts on the inner needle assembly 30 so that the inner needle assembly 30 is released from the loading state and is excited.
  • the excitation component 90 acts on the outer needle assembly 40 to release the outer needle assembly 40 and be excited.
  • the second side excitation component 90 can also act on the inner needle assembly 30 to cause the inner needle assembly 30 to be activated.
  • the needle assembly 30 is released from the loaded state and is activated.
  • the linkage mode of the excitation component 60 and the linkage mode of the second side excitation component 90 and the second rear excitation component 70 are not limited to the first embodiment shown in the figure.
  • the specific structure can also adopt various other suitable structural forms, as long as the loading limit of the inner needle assembly 30 and the outer needle assembly 40 can be released.
  • the second return spring 65 and the third return spring 75 can also be replaced by other elastic members.
  • the elastic strips provided by the first rear excitation button 61 and the second rear excitation button 71 can be used.
  • an elastic piece instead, or other suitable elastic reset structures can be used for the first rear firing button 61 and the second rear firing button 71 respectively, as long as the respective resets after pressing can be achieved.
  • the biopsy needle 100 with three usage modes according to the above-mentioned first embodiment of the present application is used as follows:
  • a first buffer pad mounting hole 251 is also provided in the base 20 at the front end of the forward excitation stroke of the inner needle seat 32 and a first buffer pad 291 is provided therein for It buffers the impact force of the inner needle seat 32 and reduces the working noise of the product.
  • pressure is optionally applied to the second rear firing button 71 or the second side firing button 91, and the second rear firing surface 741 of the second rear firing member 74 acts on the second side of the outer needle hub 42.
  • the elastic piece 423 separates from the second loading limiting surface 272 and releases the limiting position.
  • the outer needle base 42 and the outer needle 41 are excited forward under the elastic force of the outer needle loading spring 43 .
  • a second buffer pad mounting hole 252 is also provided in the base 20 at the front end of the forward excitation stroke of the outer needle seat 42 and a second buffer pad 292 is provided therein for buffering.
  • the impact force of the outer needle seat 42 reduces the operating noise of the product.
  • pressure is optionally applied to the second rear firing button 71 or the second side firing button 91, and the third rear firing surface 742 of the second rear firing member 74 first acts on the third rear firing surface 742 of the inner needle hub 32.
  • An elastic piece 323 causes the inner needle assembly 30 to be excited forward, and then the second rear exciting surface 741 of the second rear exciting member 74 acts on the second elastic piece 423 of the outer needle base 42 to cause the outer needle assembly 40 to be excited forward.
  • the above-mentioned loading step 1.1 is performed to load the outer needle assembly 40 into place, and then the above-mentioned excitation step 2.2 is performed to excite the outer needle assembly 40 to perform cutting and sampling.
  • the first rear firing button 61 of the first rear firing assembly 60 and the first side firing button 81 of the first side firing assembly 80 are respectively provided with letter marks.
  • “S” corresponds to the above-mentioned delayed full-automatic mode;
  • the second rear firing button 71 of the second rear firing assembly 70 and the second side firing button 91 of the second side firing assembly 90 are respectively provided with letter marks "A", corresponding to in the fully automatic excitation mode described above.
  • the outer surface of the upper cover 10 is also provided with a label slot 192 for pasting product labels 193.
  • the product labels 193 can be distinguished by different colors according to different types of needle types, which is convenient for users. Choose to use.
  • the biopsy needle 200 according to the second embodiment of the present application has basically the same structure as the biopsy needle 100 of the first embodiment, except that the first side excitation assembly 80 and the second side excitation assembly are The assembly 90 is provided separately from the first rear firing assembly 60 and the second rear firing assembly 70, respectively.
  • the first side excitation assembly 80 is composed of a first side excitation button 81 and a fourth return spring 83.
  • the first side excitation button 81 is installed in an inwardly pressable manner at the installation position formed by the combination of the upper cover 10 and the bottom case 20. inside, and is pressed and reset by the fourth return spring 83.
  • Applying an inward force to press the first side excitation button 81 can cause the corresponding excitation structure on the first side excitation button 81 to push inward the first elastic piece 323 abutting the first loading limiting surface 271 , prompting the first
  • the elastic piece 323 breaks away from the first loading limiting surface 271 and releases the limiting position, so that the inner needle seat 32 and the inner needle 31 are activated under the elastic force of the inner needle loading spring 33. hair.
  • the first side activating button 81 can be reset under the elastic force of the fourth return spring 83 .
  • the second side excitation assembly 90 is composed of a second side excitation button 91 and a fifth return spring 93.
  • the second side excitation button 91 is installed on the upper cover 10 and the bottom case 20 in an inwardly pressable manner. in the installation position, and is pressed and reset by the fifth return spring 93. Applying an inward force to press the second side excitation button 91 can cause the corresponding excitation structure on the second side excitation button 91 to push inward the second spring piece 423 abutting the second loading limiting surface 272 , thereby prompting the second
  • the elastic piece 423 breaks away from the second loading limit surface 272 and releases the limit, so that the outer needle needle seat 42 and the outer needle 41 are activated under the elastic force of the outer needle loading spring 43; if the inner needle assembly 30 has not been activated yet, press inward
  • the second side firing button 91 can also push the first spring 323 inwardly against the first loading limiting surface 271 to urge the first elastic piece 323 to break away from the first loading limiting surface 271 to release the limiting position, thereby allowing the inner needle to The seat 32 and the inner needle 31 are activated under

Abstract

本申请涉及一种具有三种使用模式的活检针。所述活检针包括上盖、底座、内针组件、外针组件、加载组件、第一后激发组件、第二后激发组件、第一侧激发组件和第二侧激发组件。所述活检针通过加载组件对外针组件和内针组件两者先后进行加载，通过第一后激发组件或第一侧激发组件激发内针组件，通过第二后激发组件或第二侧激发组件激发外针组件，在内针组件未被激发的情况下通过第二后激发组件或第二侧激发组件还可激发内针组件，从而提供三种使用模式供使用者根据实际需要进行选择，并可方便使用者根据实际情况灵活选择后激发或侧激发操作。

Description

具有三种使用模式的活检针 技术领域
本申请涉及医疗器械，更具体地说，涉及一种具有三种使用模式的活检针。
背景技术
近几年，肿瘤潜伏在人类身边，且发病率逐渐上升。早期发现、及时治疗可以大大预防肿瘤的病变，这就需要在超声引导下对病灶细胞或组织进行穿刺取样，用于病理分析诊断。穿刺取样要用到的一个非常重要的工具就是活检针，活检针又分为手动式活检针、半自动活检针和全自动活检针。目前，现有的全自动活检针的激发模式比较单一，要么只能一次激发，要么只能两次激发，激发操作方式也受限，无法方便使用者根据不同的情况选择使用最合适的激发模式和操作方式。
发明内容
本申请要解决的技术问题在于，针对现有技术的上述缺陷，提供一种具有三种使用模式且操作方便的活检针。
本申请解决其技术问题所采用的技术方案是：提出一种活检针，包括上盖、底座、内针组件和外针组件，所述内针组件包括内针针座和固定安装于内针针座的内针，所述外针组件包括外针针座和固定安装于外针针座的外针，所述内针针座和外针针座分别以在进针方向上可往复滑动且弹性加载的方式安装在相结合的上盖和底座内，所述内针和外针从相结合的上盖和底座的进针方向上的前端伸出，且内针穿设于外针，所述活检针还包括加载组件、第一后激发组件、第二后激发组件、第一侧激发组件和第二侧激发组件，其中：所述加载组件以可沿与进针方向平行的方向往复滑动的方式设置于上盖，所述加载组件与外针针座分别设有相配合以在加载组件向后滑动时带动外针针座弹性加载到位的第一加载配合结构，所述加载组件与内针针座分别设有在外针针座加载到位后达成配合以在加载组件向后滑动时带动内针针座弹性加载到位的第二加载配合结构；所述第一后激发组件和第二后激发组件分别安装于相结合的上盖与底座内的进针方向上的后端，所述第一后激发组件设有可作用于内针针座以促使内针针座解除加载状态而被激发的第一后激发按钮，所述第 二后激发组件设有可作用于外针针座以促使外针针座解除加载状态而被激发并可在内针针座未被激发的情况下作用于内针针座以促使内针针座解除加载状态而被激发的第二后激发按钮；所述第一侧激发组件和第二侧激发组件分别安装于相结合的上盖与底座内的进针方向上的一侧，所述第一侧激发组件设有可作用于内针针座以促使内针针座解除加载状态而被激发的第一侧激发按钮，所述第二侧激发组件设有可作用于外针针座以促使外针针座解除加载状态而被激发并可在内针针座未被激发的情况下作用于内针针座以促使内针针座解除加载状态而被激发的第二侧激发按钮。
根据本申请所述的活检针的一个实施例中，所述加载组件包括加载按键、加载座和第一复位弹簧，所述加载座滑动安装于上盖开设的沿与进针方向平行的方向延伸的加载滑槽内，所述加载按键与加载座固定连接并露出于上盖外部，所述第一复位弹簧设置于加载座和上盖之间以在加载座沿加载滑槽向后滑动后促使加载座复位。
根据本申请所述的活检针的一个实施例中，所述第一加载配合结构包括从加载座的前端向下延伸出的加载杆和凸设于外针针座上的加载凸台，所述加载座沿加载滑槽向后滑动使所述加载杆与所述加载凸台相抵进而带动外针针座向后滑动加载到位。
根据本申请所述的活检针的一个实施例中，所述第二加载配合结构包括设置于加载座的后端两侧的两个加载V槽和从内针针座向前延伸出的两个舌片，所述两个舌片之间连接一连杆，所述外针针座还设有在加载到位后插入内针针座的两个舌片之间向上顶所述连杆从而使所述两个舌片与两个加载V槽达成配合的作用杆，所述加载座沿加载滑槽向后滑动使两个加载V槽与内针针座的两个舌片相抵进而带动内针针座向后滑动加载到位。
根据本申请所述的活检针的一个实施例中，所述内针针座在进针方向上的一侧设有朝向进针方向上的斜前方伸出的第一弹片，所述内针针座与底座之间设置内针加载弹簧，所述内针针座在加载组件的带动下向后滑动至所述第一弹片的前端与底座内对应设置的第一加载限位面相抵时，所述内针针座加载到位；所述外针针座在进针方向上的对应一侧设有朝向进针方向上的斜前方伸出的第二弹片，所述外针针座与底座之间设置外针加载弹簧，所述外针针座在加载组件的带动下向后滑动至所述第二弹片的前端与底座内对应设置的第二加载限位面相抵时，所述外针针座加载到位。
根据本申请所述的活检针的一个实施例中，所述第一后激发按钮和第二后激发按钮均以可按压并可弹性复位的方式安装于底座后端的左右两侧；所述第一后激发按钮设有朝向所述内针针座的第一弹片延伸的第一后激发件，所述第一后激发件在第一后激发按钮被按压时向前推抵接于第一加载限位面的第一弹片以促使第一弹片脱离第一加载限位面而解除 限位，从而使得所述内针针座及内针在内针加载弹簧弹力的作用下被激发；所述第二后激发按钮设有朝向所述外针针座的第二弹片延伸的第二后激发件，所述第二后激发件在第二后激发按钮被按压时向前推尚未被激发的内针针座的抵接于第一加载限位面的第一弹片以促使第一弹片脱离第一加载限位面而解除限位，从而使得内针针座及内针在内针加载弹簧弹力的作用下被激发，所述第二后激发件在第二后激发按钮被继续按压时向前推外针针座的抵接于第二加载限位面的第二弹片以促使第二弹片脱离第二加载限位面而解除限位，从而使得所述外针针座及外针在外针加载弹簧弹力的作用下被激发。
根据本申请所述的活检针的一个实施例中，所述第一侧激发按钮和第二侧激发按钮均以可前后滑动的方式安装于相结合的上盖和底座一侧形成的安装位内；所述第一侧激发按钮与所述第一后激发按钮的第一后激发件固定连接，所述第二侧激发按钮与所述第二后激发按钮的第二后激发件固定连接。
根据本申请所述的活检针的一个实施例中，所述第一侧激发按钮和第二侧激发按钮均以可按压并可弹性复位的方式安装于相结合的上盖和底座一侧形成的安装位内；所述第一侧激发按钮被按压时向内推抵接于第一加载限位面的第一弹片以促使第一弹片脱离第一加载限位面而解除限位，从而使得所述内针针座及内针在内针加载弹簧弹力的作用下被激发；所述第二侧激发按钮被按压时向内推尚未被激发的内针针座的抵接于第一加载限位面的第一弹片以促使第一弹片脱离第一加载限位面而解除限位，从而使得内针针座及内针在内针加载弹簧弹力的作用下被激发，所述第二侧激发按钮被继续按压时向内推外针针座的抵接于第二加载限位面的第二弹片以促使第二弹片脱离第二加载限位面而解除限位，从而使得外针针座及外针在外针加载弹簧弹力的作用下被激发。
根据本申请所述的活检针的一个实施例中，所述内针固定设置于内针针座的下端，所述外针固定设置与外针针座的下端，所述内针针座和外针针座均被上下左右限位于上盖和底座相结合的内部空间中只能沿进针方向前后移动。
根据本申请所述的活检针的一个实施例中，所述相结合的上盖和底座内还设有将第一后激发按钮和第二后激发按钮分隔开的隔板。
实施本申请的活检针，具有以下有益效果：根据本申请实施例的活检针通过一个加载组件实现外针组件和内针组件两者的先后加载，并为内针组件和外针组件分别单独设置第一后激发组件、第一侧激发组件和第二后激发组件、第二侧激发组件，通过第一后激发组件或第一侧激发组件激发内针组件，通过第二后激发组件或第二侧激发组件激发外针组件，并在内针组件未被激发的情况下通过第二后激发组件或第二侧激发组件也可激发内针组件， 从而提供全自动激发模式、延迟全自动激发模式和全自动领射程模式三种使用模式供使用者根据实际需要进行选择，并可方便使用者根据实际情况灵活选择后激发或侧激发操作。
附图说明
下面将结合附图及实施例对本申请作进一步说明，附图中：
图1是本申请第一实施例的具有三种使用模式的活检针的整体结构示意图；
图2是图1所示的活检针的上盖的结构示意图；
图3是图2所示的上盖的另一角度的结构示意图；
图4是图1所示的活检针的底座的结构示意图；
图5是图4所示的底座的另一角度的结构示意图；
图6是本申请第一实施例中的加载座的结构示意图；
图7是图6所示的加载座的另一角度的结构示意图；
图8是本申请第一实施例中的内针针座的结构示意图；
图9是图8所示的内针针座的结构剖视图；
图10是本申请第一实施例中的外针针座的结构示意图；
图11是图10所示的外针针座的结构剖视图；
图12是本申请第一实施例中内针针座与上盖和底座配合的局部结构剖视图；
图13是本申请第一实施例中外针针座与上盖和底座配合的局部结构剖视图；
图14是本申请第一实施例的活检针在内针组件和外针组件均处于初始状态的结构剖视图；
图15是本申请第一实施例的活检针在外针组件处于加载状态的结构剖视图；
图16是本申请第一实施例的活检针在外针组件和内针组件均处于加载状态的结构剖视图；
图17是本申请第一实施例中的第一后激发组件的结构示意图；
图18是本申请第一实施例中的第二后激发组件的结构示意图；
图19是本申请第一实施例的活检针在拿掉上盖及其上的加载组件后的内部结构示意图；
图20是本申请第二实施例的具有三种使用模式的活检针的整体结构示意图；
图21是图20所示的活检针在拿掉上盖及其上的加载组件后的内部结构示意图。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。并且，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
图1示出了根据本申请第一实施例的具有三种使用模式的活检针100的整体结构示意图。如图1所示，该具有三种使用模式的活检针100主要由上盖10、底座20、内针组件30、外针组件40、加载组件50、第一后激发组件60、第二后激发组件70、第一侧激发组件80和第二侧激发组件90构成。上盖10和底座20相结合包围出内部空间，内针组件30和外针组件40分别以在进针方向上可往复滑动且弹性加载的方式安装在上盖10和底座20内，内针组件30的内针31和外针组件40的外针41从上盖10和底座20的进针方向上的前端伸出，且内针31穿设于外针41中。加载组件50以可沿与进针方向平行的方向滑动的方式设置在上盖10上，用于依次分别对外针组件40和内针组件30施加向后移动的作用力以使外针组件40和内针组件30处于加载状态。第一后激发组件60和第二后激发组件70分别左右排布设置于上盖10和底座20的进针方向上的后端，第一侧激发组件80和第二侧激发组件90分别前后排布设置于上盖10和底座20的左侧。第一后激发组件60用于作用于内针组件30以使内针组件30解除加载状态而被激发，同样地，第一侧激化组件80亦用于作用于内针组件30以使内针组件30解除加载状态而被激发。第二后激发组件70用于作用于外针组件40以使外针组件40解除加载状态而被激发，第二后激发组件70还用于在内针组件30未被激发时作用于内针组件30以使内针组件30解除加载状态而被激发。同样地，第二侧激发组件90用于作用于外针组件40以使外针组件40解除加载状态而被激发，第二侧激发组件90还用于在内针组件30未被激发时作用于内针组件30以使内针组件30解除加载状态而被激发。根据本申请第一实施例的活检针100通过加载组件50与第一后激发组件60、第二后激发组件70、第一侧激发组件80和第二侧激发组件90的配合实现三种使用模式，方便医生使用时根据不同的情况选择最适合的激发模式，为病人提供最及时最适合的活检方案，以下将结合图2至图19给出更加详细的介绍。
具体参见图2至图5所示，上盖10和底座20通过相配合的卡扣定位结构相结合。上盖10沿其内周设有多个卡扣111并在后端设有两个第一定位柱112，对应地，底座20沿其内周设有多个扣槽211并在后端设有两个定位孔212。将上盖10的两个第一定位柱112对准底座20的两个定位孔212插入并将多个卡扣111与多个扣槽211相扣合，便可将上盖10 和底座20相结合。上盖10和底座20分别在进针方向上的前端设置有第一出针口配合件12和第二出针口配合件22，二者在上盖10和底座20相结合后包围形成靠近底座20下端的出针口，以供外针41和穿设于外针41中的内针31经该出针口被加载回收或被激发弹出。具体如图2和图3所示，第一出针口配合件12设于从上盖10的前端向下延伸的支撑臂121的下端，支撑臂121的末端还在第一出针口配合件12的两侧分别设有向下凸伸的第二定位柱122，对应地如图5所示，底座20的前端在第二出针口配合件22的两侧分别开设有定位槽233。上盖10和底座20结合时，第二定位柱122嵌入定位槽233中，防止活检针100装配完成后前端变形，而且，第一出针口配合件12和第二出针口配合件22配合形成的出针口靠近底座20下端设置，使得内针31和外针41更容易与超声探头等辅助设备配合使用。为了让内针31和外针41进针轴线尽量靠近底座20，而弹性加载激发受力的方向和内外针进针轴线势必会错开不同轴，这样就需要在上盖10和底座20内共同提供可使内针针座32和外针针座42往复滑动不会产生偏斜的限位结构，以确保内针31和外针41不会产生出针不顺的偏斜。上盖10在进针方向上的后端设有朝向底座20伸出的隔板13，底座20的后端则开设有供隔板13插入的开槽234，上盖10和底座20相结合后隔板13插入开槽234内将底座20后端的开放空间分隔成左右两个部分，分别用于安装第一后激发组件60和第二后激发组件70。上盖10的左侧沿进针方向上前后排布开设有第一安装槽161和第二安装槽162，底座20的左侧沿进针方向上前后排布对应开设有第三安装槽231和第四安装槽232，上盖10和底座20相结合后第一安装槽161和第三安装槽231共同包围形成用于安装第一侧激发组件80的安装位，第二安装槽162和第四安装槽232共同包围形成用于安装第二侧激发组件90的安装位。
进一步参见图8和图9结合图14和图19所示，内针组件30主要由内针31、内针针座32和内针加载弹簧33构成。具体如图8和图9所示，内针31为实心的针杆，内针31的前端设有取样槽311，内针31的后端固定设置于内针针座32在进针方向上的下端(例如通过粘胶或一体注塑固定等)，以便内针31可以随内针针座32一起移动。内针针座32在进针方向上的上端设有向上延伸的第一标识柱326，在上端前侧设有间隔一定距离向前水平延伸出的两个舌片324a和324b，并在两个舌片324a和324b之间连接一连杆325，在两个舌片324a和324b的前端形成加载斜面3241，在两个舌片324a和324b的后端上表面分别形成凹槽3242。内针针座32在进针方向上的左侧朝向进针方向上的斜前方伸出第一弹片323，第一弹片323的前端形成第一抵接面3231。内针针座32在进针方向上的右侧形成第一导向槽327，第一导向槽327沿进针方向延伸。内针针座32还在进针方向上的后端 开设第一弹簧安装孔328，并在第一弹簧安装孔328内设置第一弹簧导向柱3281，用于安装内针加载弹簧33。结合图3、图5、图12、图14和图19所示，内针针座32相对于外针针座42滑动安装于上盖10和底座20相结合的内部空间的后部。底座20内的左右两侧针对内针针座32设置有向上延伸的第一限位凸台241和第二限位凸台242，上盖10内的左右两侧针对内针针座32设置有向下延伸的导向凸台181和限位筋182。内针针座32的两侧分别设有左右两个侧面321与第一限位凸台241和第二限位凸台242相对内侧面贴合以进行左右限位，内针针座32的两侧还分别设有底面322支撑于第一限位凸台241和第二限位凸台242的上端面进行向下限位，同时，上盖10内的导向凸台181滑插入内针针座32的第一导向槽327内，限位筋182抵住内针针座32的上端面，从而不仅提供进针方向上的导向作用还对内针针座32进行向上限位(参见图12所示)。如此，内针针座32被限位于上盖10和底座20的内部空间中只能沿进针方向前后移动，不会产生轴向偏斜。参见图14所示，内针加载弹簧33的前端抵装于内针针座32的第一弹簧安装孔328内，内针加载弹簧33的后端则套装在底座20内设置的第一弹簧安装座261内并被第一弹簧支撑台2611(参见图5所示)所支撑。若施加作用力向后移动内针针座32，则会压缩内针加载弹簧33，当内针针座32被向后移动到第一弹片323前端的第一抵接面3231抵接于底座20内壁设置的第一加载限位面271(参见图5所示)时，内针针座32被加载到位，内针加载弹簧33的弹力促使第一弹片323的第一抵接面3231抵紧底座20内壁的第一加载限位面271。
进一步参见图10和图11结合图14和图19所示，外针组件40主要由外针41、外针针座42和外针加载弹簧43构成。具体如图10和图11所示，外针41为空心的针管，外针41的后端固定设置于外针针座42在进针方向上的下端，以随外针针座42一起移动。外针针座42在进针方向上的上端设有加载凸台422，加载凸台422的前端形成加载配合面4221，加载凸台422的后端向后水平延伸出一作用杆424，作用杆424的后端形成作用斜面4241，加载凸台422上还设有向上延伸的第二标识柱425。外针针座42在进针方向上的左侧朝向进针方向上的斜前方伸出第二弹片423，第二弹片423的前端形成第二抵接面4231。外针针座42在进针方向上的右侧形成第二导向槽426，第二导向槽426沿进针方向延伸。外针针座42还在进针方向上的后端开设第二弹簧安装孔427，并在第二弹簧安装孔427内设置第二弹簧导向柱4271，用于安装外针加载弹簧43。结合图3、图5、图13、图14和图19所示，外针针座42相对于内针针座32滑动安装于上盖10和底座20相结合的内部空间的前部，外针41的前端通过轴套411穿出上盖10和底座20共同形成的出针口保证同轴度，内针31从外针41的后端穿设于外针41内，初始状态下内针31前端的取样槽311收藏于 外针41的前端内。底座20内的左右两侧针对外针针座42设置有向上延伸的第三限位凸台243和第四限位凸台244，上盖10内设置的导向凸台181和限位筋182亦沿进针方向延伸至外针针座42处。外针针座42的两侧分别设有左右两个侧面4212与第三限位凸台243和第四限位凸台244相对内侧面贴合以进行左右限位，外针针座42的两侧还分别设有底面4211支撑于第三限位凸台243和第四限位凸台244的上端面进行向下限位，同时，上盖10内向下延伸出的导向凸台181滑插入外针针座42的第二导向槽426内，限位筋182抵住内针针座32的上端面，从而不仅提供进针方向上的导向作用还对外针针座42进行向上限位。如此，外针针座42被限位于上盖10和底座20的内部空间中只能沿进针方向前后移动，不会产生轴向偏斜。再参见图14所示，外针加载弹簧43的前端抵装于外针针座42的第二弹簧安装孔427内，外针加载弹簧43的后端则套装在底座20内设置的第二弹簧安装座262的第二弹簧安装柱2621上。若施加作用力向后移动外针针座42，则会压缩外针加载弹簧43，当外针针座42被向后移动到第二弹片423前端的第二抵接面4231抵接于底座20内壁设置的第二加载限位面272(参见图5所示)时，外针针座42被加载到位，外针加载弹簧43的弹力促使第二弹片423的第二抵接面4231抵紧底座20内壁的第二加载限位面272。
进一步参见图1、图6和图7结合图14至图16所示，加载组件50主要由加载按键51、加载座52和第一复位弹簧53构成。上盖10的前部开设有沿与进针方向平行的方向延伸的加载滑槽14，加载座52滑动安装于加载滑槽14内，加载按键51与加载座52固定连接并露出于上盖10外部，施加向后的作用力于加载按键51便可带动加载座52沿加载滑槽14向后移动，从而作用于外针针座42或内针针座32以使外针组件40或内针组件30加载到位，第一复位弹簧53的弹力促使加载座52和加载按键51在向后的作用力释放后复位到初始位置。具体如图6和图7所示，加载座52在其上端面521上设有加载滑块522，并在加载滑块522的中部设置T形凸台523，在加载滑块522的T形凸台523两侧开设第一限位孔524a和第二限位孔524b。加载座52还在进针方向上的后端两侧分别设置有与内针针座32的两个舌片324a和324b相配合的两个加载V槽525a和525b，在进针方向上的前端向下延伸出与外针针座42的加载凸台422相配合的加载杆526。再参见图14所示，加载座52通过加载滑块522滑动安装于上盖10的加载滑槽14内，加载座52的上端面521与上盖10的内表面相抵而进行向上限位，加载按键51内对应于T形凸台523设有两个弹性扣位511a和511b扣住T形凸台523以进行上下限位，同时加载按键51还设有第一限位柱512a和第二限位柱512b插入加载滑块522上的第一限位孔524a和第二限位孔524b中，从而确保加载按键51固定安装在加载座52上，移动加载按键51便可带动加载座52沿加载 滑槽14前后移动。再参见图7和图3所示，加载座52的底部设有第三弹簧安装柱527，加载座52前方的上盖10内部设有第四弹簧安装柱17，第一复位弹簧53的两端分别挂接于第三弹簧安装柱527和第四弹簧安装柱17上，施加向后的作用力使加载座52沿加载滑槽14向后移动会拉伸复位弹簧53，因而在向后的作用力释放后复位弹簧53带着加载座52向前移动复位。具体如图7所示，第三弹簧安装柱572的外周还设有挡块5271，以防止第一复位弹簧53脱出。
以下将结合图14至图16详细介绍加载组件50对内针组件30和外针组件40进行加载的具体过程：首先如图14所示，加载组件50、内针组件30和外针组件40均处于初始状态，内针31的取样槽311收藏于外针41的前端内，此时对加载按键51施加向后的作用力便可带动加载座52沿加载滑槽14向后移动，加载座52前端向下伸出的加载杆526的加载面5261会首先与外针针座42的加载凸台422前端的加载配合面4221相抵接，进而带动外针针座42和外针41一起向后移动，外针针座42后端的作用杆424正对内针针座32的两个舌片324a和324b之间的空间插入。当外针针座42被向后移动到第二弹片423前端的第二抵接面4231抵接于底座20内壁设置的第二加载限位面272时，外针针座42被加载到位，此时如图15所示，释放加载按键51上向后的作用力，加载按键51和加载座52便在第一复位弹簧53的作用下复位到初始位置，外针加载弹簧43被压缩，外针41随外针针座42一起后移收回，内针31的取样槽311露出；而且此时，外针针座42的作用杆424与内针针座32的两个舌片324a和324b之间的连杆325发生碰触，作用杆424通过后端的作用斜面4241逐渐将连杆325向上顶起，从而带动与连杆325连接的两个舌片324a、324b绕凹槽3242处向上变形顶起，使两个舌片324a、324b处于图15所示的倾斜状态。此外，外针组件40加载到位后，如图15所示，外针针座42上的第二标识柱425从加载滑槽14中露出，以便使用者观察确认。然后，再次对加载按键51施加向后的作用力带动加载座52沿加载滑槽14向后移动，由于外针针座42已后移加载到位，加载座52前端的加载杆526不再发生作用，加载座52后端的加载V槽525a和525b会分别与内针针座32向上倾斜的两个舌片324a和324b前端的加载斜面3241相抵，进而带动内针针座32和内针31一起向后移动。当内针针座32被向后移动到第一弹片323前端的第一抵接面3231抵接于底座20内壁设置的第一加载限位面271时，内针针座32被加载到位，此时如图16所示，释放加载按键51上向后的作用力，加载组件50便在第一复位弹簧53的作用下复位到初始位置，内针加载弹簧33被压缩，内针31随内针针座32一起后移收回，内针31的取样槽311又收藏于外针41的前端内。而且内针针座32被加载到位时，如图16所示，内针针座32上 的第一标识柱326正好从上盖10上开设的观察窗191中露出，以便使用者观察确认。
如上所述，本申请第一实施例的活检针100通过在加载组件50和外针组件40之间设置由加载座52上的加载杆526与外针针座42上的加载凸台422配合形成的第一加载配合结构实现外针组件40的弹性加载，通过在加载组件50和内针组件30之间设置由加载座52上的加载V槽525a、525b与内针针座32上的舌片324a、324b配合形成的第二加载配合结构实现内针组件30的弹性加载，并且只有在外针组件40被加载到位后，才能促成加载组件50与内针组件30之间的第二加载配合结构达成配合。因而，本申请上述第一实施例的活检针100不仅通过一个加载组件50实现了外针组件40和内针组件30两者的加载，还通过一个加载组件50实现了外针组件40和内针组件30的先后加载。此外，根据本申请的不同实施例中，加载组件50和外针组件40之间的第一加载配合结构以及加载组件50和内针组件30之间的第二加载配合结构并不局限于图示第一实施例的具体结构，还可以采用其他各种合适的配合结构形式，只要能够实现通过一个加载组件50对外针组件40和内针组件30进行先后加载即可。
进一步参见图17和图19所示，第一后激发组件60主要由第一后激发按钮61和第二复位弹簧65构成，第一后激发按钮61以可按压的方式安装于底座20后端开放空间中的左侧，并通过第二复位弹簧65进行按压复位。具体如图17所示，第一后激发按钮61的底部开设有第一按压滑槽62，第一后激发按钮61的前端分别设置第五弹簧安装柱63和第一后激发件64，第一后激发件64优选为向左前方延伸的杆状件，前端形成第一后激发面641。第一侧激发组件80包括第一侧激发按钮81和第一激发连接杆82，通过第一激发连接杆82固定连接于第一后激发件64的前端，从而与第一后激发组件60整合成一体。进一步参见图19结合图5所示，第一后激发按钮61安装于底座20内，底座20底部右侧形成第一贴合面2814并在第一贴合面2814上设置第一凸块2811插入第一后激发按钮61的第一按压滑槽62中，使得第一后激发按钮61的底面与底座20的第一贴合面2814形成贴合装配并可以通过第一凸块2811与第一按压滑槽62的配合实现前后滑动，同时，底座20内还设有导向滑槽283(参见图5所示)，第一后激发按钮61的第一后激发件64放置于该导向滑槽283中由该导向滑槽283提供向前移动的导向作用。第二复位弹簧65的一端套装在第五弹簧安装柱63上与第一后激发按钮61相抵，第二复位弹簧65的另一端套装在底座20内设置的第三弹簧安装座2812的第六弹簧安装柱2813(参见图5所示)上。如此，向前施加按压第一后激发按钮61的作用力，可以使第一后激发按钮61沿第一按压滑槽62向前移动，从而使得第一后激发件64的第一后激发面641向前推抵接于第一加载限位面271的第一弹 片323，促使第一弹片323脱离第一加载限位面271而解除限位，从而使得内针针座32及内针31在内针加载弹簧33弹力的作用下被激发。释放施加于第一后激发按钮61上的作用力，第一后激发按钮61便可在第二复位弹簧65的弹力作用下复位。再参见图19所示，第一侧激发组件80的第一侧激发按钮81在第一后激发组件60安装到位时正好以可前后滑动的方式安装于上盖10和底座20相结合后第一安装槽161和第三安装槽231共同包围形成的安装位中。向前施加推动第一侧激发按钮81的作用力，亦可带动第一后激发按钮61沿第一按压滑槽62向前移动，从而通过第一后激发件64解除内针组件30的加载。释放施加于第一测激发按钮81上的作用力，第一侧激发按钮81便可在第二复位弹簧65的弹力作用下复位。
进一步参见图18和图19所示，第二后激发组件70主要由第二后激发按钮71和第三复位弹簧75构成，第二后激发按钮71以可按压的方式安装于底座20后端开放空间中的右侧，并通过第三复位弹簧75进行按压复位。具体如图18所示，第二后激发按钮71的底部开设有第二按压滑槽72，第二后激发按钮71的前端分别设置第七弹簧安装柱73和第二后激发件74，第二后激发件74优选为向左前方延伸的杆状件，前端形成第二后激发面741，第二后激发件74还在第二后激发面741后方的相应位置形成第三后激发面742。第二侧激发组件90包括第二侧激发按钮91和第二激发连接杆92，通过第二激发连接杆92固定连接于第二后激发件74的前端，从而与第二后激发组件70整合成一体。进一步参见图19结合图5所示，第二后激发按钮71安装于底座20内，底座20底部左侧形成第二贴合面2824并在第二贴合面2824上设置第二凸块2821插入第二后激发按钮71的第二按压滑槽72中，使得第二后激发按钮71的底面与底座20的第二贴合面2824形成贴合装配并可以通过第二凸块2821与第二按压滑槽72的配合实现前后滑动，同时，第二后激发按钮71的第二后激发件74叠置于底座20内的导向滑槽283中第一后激发件64的上方，由该导向滑槽283提供向前移动的导向作用。第三复位弹簧75的一端套装在第七弹簧安装柱73上与第二后激发按钮71相抵，第三复位弹簧75的另一端套装在底座20内设置的第四弹簧安装座2822的第八弹簧安装柱2823(参见图5所示)上。如此，向前施加按压第二后激发按钮71的作用力，可以使第二后激发按钮71沿第二按压滑槽72向前移动，从而首先使得第二后激发件74的第三后激发面742向前推抵接于第一加载限位面271的第一弹片323，促使第一弹片323脱离第一加载限位面271而解除限位，使内针针座32及内针31在内针加载弹簧33弹力的作用下被激发，继而使得第二后激发件74的第二后激发面741向前推抵接于第二加载限位面272的第二弹片423，促使第二弹片423脱离第二加载限位面272而解除限 位，使外针针座42及外针41在外针加载弹簧43弹力的作用下被激发。为确保取样切割成功，第二后激发件74的第二后激发面741推抵第二弹片423和第三后激发面742推抵第一弹片323存在微小的行程差，即第三后激发面742会先接触到第一弹片323使内针针座32及内针31先被激发，继而第二后激发面741才会接触到第二弹片423使外针针座42及外针41后被激发。释放施加于第二后激发按钮71上的作用力，第二后激发按钮71便可在第三复位弹簧75的弹力作用下复位。再参见图19所示，第二侧激发组件90的第二侧激发按钮91在第二后激发组件70安装到位时正好以可前后滑动的方式安装于上盖10和底座20相结合后第二安装槽162和第四安装槽232共同包围形成的安装位中。向前施加推动第二侧激发按钮91的作用力，亦可带动第二后激发按钮71沿第二按压滑72向前移动，从而通过第二后激发件74解除外针组件40的加载而将外针41激发，在内针组件30尚未被激发的情况下亦能解除内针组件30的加载而将内针31激发。释放施加于第二侧激发按钮91上的作用力，第二侧激发按钮91便可在第三复位弹簧75的弹力作用下复位。进一步地，参见图3所示，上盖10内正对第二复位弹簧65和第三复位弹簧75还向下延伸出第一限位台183a和第二限位台183b，当上盖10和底座20相结合后，第一限位台183a和第二限位台183b正好从上方对对第二复位弹簧65和第三复位弹簧75进行限位，防止其脱出，提高按压的平稳度。
如上所述，本申请第一实施例的活检针100为内针组件30和外针组件40分别单独设置第一后激发组件60和第二后激发组件70，通过第一后激发组件60作用于内针组件30使内针组件30解除加载状态而被激发，通过第二后激发组件70作用于外针组件40使外针组件40解除加载状态而被激发，在内针组件30尚未被激发的情况下，还可通过第二后激发组件70作用于内针组件30使内针组件30解除加载状态而被激发。此外，本申请第一实施例的活检针100还为内针组件30和外针组件40分别单独设置第一侧激发组件80和第二侧激发组件90，且第一侧激发组件80与第一后激发组件60联动，第二侧激发组件90与第二后激发组件70联动，通过第一侧激发组件80作用于内针组件30使内针组件30解除加载状态而被激发，通过第二侧激发组件90作用于外针组件40使外针组件40解除加载状态而被激发，在内针组件30尚未被激发的情况下，还可通过第二侧激发组件90作用于内针组件30使内针组件30解除加载状态而被激发。
进一步地，根据本申请的不同实施例中，第一后激发组件60的第一后激发件64、第二后激发组件70的第二后激发件74、第一侧激发组件80与第一后激发组件60的联动方式以及第二侧激发组件90与第二后激发组件70的联动方式并不局限于图示第一实施例的 具体结构，还可以采用其他各种合适的结构形式，只要能够解除内针组件30和外针组件40的加载限位即可。根据本申请的不同实施例中，第二复位弹簧65和第三复位弹簧75也可以用其它弹性件来代替，例如可以用第一后激发按钮61和第二后激发按钮71自带的弹性条或弹性片来代替，或者还可以为第一后激发按钮61和第二后激发按钮71分别采用其他合适的弹性复位结构，只要能够实现各自的按压后复位即可。
根据本申请上述第一实施例的具有三种使用模式的活检针100的使用方式如下：
1、加载
1.1如图14和图15所示，对加载按键51施加向后的作用力带动加载座52沿加载滑槽14向后移动，进而带动外针针座42和外针41一起向后移动，当外针针座42的第二弹片423前端的第二抵接面4231抵接于底座20内壁的第二加载限位面272时，外针针座42被加载到位；同时，外针针座42的作用杆424将内针针座32的两个舌片324a、324b向上顶起，使两个舌片324a、324b处于图15所示的倾斜状态。释放加载按键51上向后的作用力，加载按键51和加载座52便在第一复位弹簧53的作用下复位到初始位置。
1.2如图15和图16所示，再对加载按键51施加向后的作用力带动加载座52沿加载滑槽14向后移动，进而带动内针针座32和内针31一起向后移动，当内针针座32的第一弹片323前端的第一抵接面3231抵接于底座20内壁的第一加载限位面271时，内针针座32被加载到位。释放加载按键51上向后的作用力，加载按键51和加载座52便在第一复位弹簧53的作用下复位到初始位置。
2、激发
2.1如图19所示，可选地对第一后激发按钮61或第一侧激发按钮81施加压力，第一后激发件64作用于内针针座32的第一弹片323使其脱离第一加载限位面271而解除限位，内针针座32及内针31便在内针加载弹簧33的弹力作用下被向前激发。优选地，参见图5和图19所示，底座20内还在内针针座32向前激发行程的前端设有第一缓冲垫安装孔251并在其内设置第一缓冲垫291，用于缓冲内针针座32的撞击力，减小产品的工作噪音。
2.2如图19所示，可选地对第二后激发按钮71或第二侧激发按钮91施加压力，第二后激发件74的第二后激发面741作用于外针针座42的第二弹片423使其脱离第二加载限位面272而解除限位，外针针座42及外针41便在外针加载弹簧43的弹力作用下被向前激发。优选地，参见图5和图19所示，底座20内还在外针针座42向前激发行程的前端设有第二缓冲垫安装孔252并在其内设置第二缓冲垫292，用于缓冲外针针座42的撞击力，减小产品的工作噪音。
2.3如图19所示，可选地对第二后激发按钮71或第二侧激发按钮91施加压力，第二后激发件74的第三后激发面742先作用于内针针座32的第一弹片323，使内针组件30被向前激发，继而第二后激发件74的第二后激发面741作用于外针针座42的第二弹片423，使外针组件40被向前激发。
3、使用模式
3.1全自动激发模式(Automatic)
执行上述加载步骤1.1和1.2，然后将活检针100控制在距离病灶的安全距离，然后再执行上述激发步骤2.3将内针组件30和外针组件40先后激发，进行切割取样。
3.2延迟全自动模式(Stylet only)
执行上述加载步骤1.1和1.2，然后将活检针100控制在距离病灶的安全距离，然后再执行上述激发步骤2.1仅将内针组件30激发，待确认后再执行上述激发步骤2.2将外针组件40激发，进行切割取样。
3.3全自动零射程模式
将活检针100穿刺到病灶内后，执行上述加载步骤1.1将外针组件40加载到位，然后再执行上述激发步骤2.2将外针组件40激发，进行切割取样。
结合上述使用模式，为方便使用者进行区分，参见图1所示，第一后激发组件60的第一后激发按钮61和第一侧激发组件80的第一侧激发按钮81分别设有字母标记“S”，对应于上述的延迟全自动模式；第二后激发组件70的第二后激发按钮71和第二侧激发组件90的第二侧激发按钮91分别设有字母标记“A”，对应于上述的全自动激发模式。进一步地，参见图1和图2所示，上盖10的外表面还设有标签槽192，用于粘贴产品标签193，产品标签193可以根据不同型号的针型用不同颜色区分，方便使用者选择使用。
图20和图21示出了根据本申请第二实施例的具有三种使用模式的活检针200的结构示意图。参见图20和图21所示，根据本申请第二实施例的活检针200具有与前述第一实施例的活检针100基本相同的结构，区别在于将第一侧激发组件80和第二侧激发组件90分别独立于第一后激发组件60和第二后激发组件70单独设置。第一侧激发组件80由第一侧激发按钮81和第四复位弹簧83构成，第一侧激发按钮81以可向内按压的方式安装于上盖10和底壳20相结合共同构成的安装位内，并通过第四复位弹簧83进行按压复位。向内施加按压第一侧激发按钮81的作用力，可以使第一侧激发按钮81上相应设置的激发结构向内推抵接于第一加载限位面271的第一弹片323，促使第一弹片323脱离第一加载限位面271而解除限位，从而使得内针针座32及内针31在内针加载弹簧33弹力的作用下被激 发。释放施加于第一侧激发按钮81上的作用力，第一侧激发按钮81便可在第四复位弹簧83的弹力作用下复位。同样地，第二侧激发组件90由第二侧激发按钮91和第五复位弹簧93构成，第二侧激发按钮91以可向内按压的方式安装于上盖10和底壳20相结合共同构成的安装位内，并通过第五复位弹簧93进行按压复位。向内施加按压第二侧激发按钮91的作用力，可以使第二侧激发按钮91上相应设置的激发结构向内推抵接于第二加载限位面272的第二弹片423，促使第二弹片423脱离第二加载限位面272而解除限位，从而使得外针针座42及外针41在外针加载弹簧43弹力的作用下被激发；若内针组件30尚未被激发，向内按压第二侧激发按钮91还可向内推抵接于第一加载限位面271的第一弹簧323，促使第一弹片323脱离第一加载限位面271而解除限位，从而使得内针针座32及内针31在内针加载弹簧33弹力的作用下被激发。释放施加于第二侧激发按钮91上的作用力，第二侧激发按钮91便可在第五复位弹簧93的弹力作用下复位。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本申请的保护范围之内。

Claims (10)

  1. 一种活检针，包括上盖、底座、内针组件和外针组件，所述内针组件包括内针针座和固定安装于内针针座的内针，所述外针组件包括外针针座和固定安装于外针针座的外针，所述内针针座和外针针座分别以在进针方向上可往复滑动且弹性加载的方式安装在相结合的上盖和底座内，所述内针和外针从相结合的上盖和底座的进针方向上的前端伸出，且内针穿设于外针，其特征在于，所述活检针还包括加载组件、第一后激发组件、第二后激发组件、第一侧激发组件和第二侧激发组件，其中：
    所述加载组件以可沿与进针方向平行的方向往复滑动的方式设置于上盖，所述加载组件与外针针座分别设有相配合以在加载组件向后滑动时带动外针针座弹性加载到位的第一加载配合结构，所述加载组件与内针针座分别设有在外针针座加载到位后达成配合以在加载组件向后滑动时带动内针针座弹性加载到位的第二加载配合结构；
    所述第一后激发组件和第二后激发组件分别安装于相结合的上盖与底座内的进针方向上的后端，所述第一后激发组件设有可作用于内针针座以促使内针针座解除加载状态而被激发的第一后激发按钮，所述第二后激发组件设有可作用于外针针座以促使外针针座解除加载状态而被激发并可在内针针座未被激发的情况下作用于内针针座以促使内针针座解除加载状态而被激发的第二后激发按钮；
    所述第一侧激发组件和第二侧激发组件分别安装于相结合的上盖与底座内的进针方向上的一侧，所述第一侧激发组件设有可作用于内针针座以促使内针针座解除加载状态而被激发的第一侧激发按钮，所述第二侧激发组件设有可作用于外针针座以促使外针针座解除加载状态而被激发并可在内针针座未被激发的情况下作用于内针针座以促使内针针座解除加载状态而被激发的第二侧激发按钮。
  2. 根据权利要求1所述的活检针，其特征在于，所述加载组件包括加载按键、加载座和第一复位弹簧，所述加载座滑动安装于上盖开设的沿与进针方向平行的方向延伸的加载滑槽内，所述加载按键与加载座固定连接并露出于上盖外部，所述第一复位弹簧设置于加载座和上盖之间以在加载座沿加载滑槽向后滑动后促使加载座复位。
  3. 根据权利要求2所述的活检针，其特征在于，所述第一加载配合结构包括从加载座的前端向下延伸出的加载杆和凸设于外针针座上的加载凸台，所述加载座沿加载滑槽向后滑动使所述加载杆与所述加载凸台相抵进而带动外针针座向后滑动加载到位。
  4. 根据权利要求3所述的活检针，其特征在于，所述第二加载配合结构包括设置于 加载座的后端两侧的两个加载V槽和从内针针座向前延伸出的两个舌片，所述两个舌片之间连接一连杆，所述外针针座还设有在加载到位后插入内针针座的两个舌片之间向上顶所述连杆从而使所述两个舌片与两个加载V槽达成配合的作用杆，所述加载座沿加载滑槽向后滑动使两个加载V槽与内针针座的两个舌片相抵进而带动内针针座向后滑动加载到位。
  5. 根据权利要求1所述的活检针，其特征在于，所述内针针座在进针方向上的一侧设有朝向进针方向上的斜前方伸出的第一弹片，所述内针针座与底座之间设置内针加载弹簧，所述内针针座在加载组件的带动下向后滑动至所述第一弹片的前端与底座内对应设置的第一加载限位面相抵时，所述内针针座加载到位；所述外针针座在进针方向上的对应一侧设有朝向进针方向上的斜前方伸出的第二弹片，所述外针针座与底座之间设置外针加载弹簧，所述外针针座在加载组件的带动下向后滑动至所述第二弹片的前端与底座内对应设置的第二加载限位面相抵时，所述外针针座加载到位。
  6. 根据权利要求5所述的活检针，其特征在于，所述第一后激发按钮和第二后激发按钮均以可按压并可弹性复位的方式安装于底座后端的左右两侧；所述第一后激发按钮设有朝向所述内针针座的第一弹片延伸的第一后激发件，所述第一后激发件在第一后激发按钮被按压时向前推抵接于第一加载限位面的第一弹片以促使第一弹片脱离第一加载限位面而解除限位，从而使得所述内针针座及内针在内针加载弹簧弹力的作用下被激发；所述第二后激发按钮设有朝向所述外针针座的第二弹片延伸的第二后激发件，所述第二后激发件在第二后激发按钮被按压时向前推尚未被激发的内针针座的抵接于第一加载限位面的第一弹片以促使第一弹片脱离第一加载限位面而解除限位，从而使得内针针座及内针在内针加载弹簧弹力的作用下被激发，所述第二后激发件在第二后激发按钮被继续按压时向前推外针针座的抵接于第二加载限位面的第二弹片以促使第二弹片脱离第二加载限位面而解除限位，从而使得所述外针针座及外针在外针加载弹簧弹力的作用下被激发。
  7. 根据权利要求6所述的活检针，其特征在于，所述第一侧激发按钮和第二侧激发按钮均以可前后滑动的方式安装于相结合的上盖和底座一侧形成的安装位内；所述第一侧激发按钮与所述第一后激发按钮的第一后激发件固定连接，所述第二侧激发按钮与所述第二后激发按钮的第二后激发件固定连接。
  8. 根据权利要求6所述的活检针，其特征在于，所述第一侧激发按钮和第二侧激发按钮均以可按压并可弹性复位的方式安装于相结合的上盖和底座一侧形成的安装位内；所述第一侧激发按钮被按压时向内推抵接于第一加载限位面的第一弹片以促使第一弹片脱离第一加载限位面而解除限位，从而使得所述内针针座及内针在内针加载弹簧弹力的作用下 被激发；所述第二侧激发按钮被按压时向内推尚未被激发的内针针座的抵接于第一加载限位面的第一弹片以促使第一弹片脱离第一加载限位面而解除限位，从而使得内针针座及内针在内针加载弹簧弹力的作用下被激发，所述第二侧激发按钮被继续按压时向内推外针针座的抵接于第二加载限位面的第二弹片以促使第二弹片脱离第二加载限位面而解除限位，从而使得外针针座及外针在外针加载弹簧弹力的作用下被激发。
  9. 根据权利要求1所述的活检针，其特征在于，所述内针固定设置于内针针座的下端，所述外针固定设置与外针针座的下端，所述内针针座和外针针座均被上下左右限位于上盖和底座相结合的内部空间中只能沿进针方向前后移动。
  10. 根据权利要求1所述的活检针，其特征在于，所述相结合的上盖和底座内还设有将第一后激发按钮和第二后激发按钮分隔开的隔板。
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CN109646061A (zh) * 2019-02-20 2019-04-19 苏州市立普医疗科技有限公司 具有两种激发形式的活检针
WO2020168485A1 (zh) * 2019-02-20 2020-08-27 王沁 具有两种激发形式的活检针
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CN216876432U (zh) * 2021-08-27 2022-07-05 广州晟威医疗器械有限公司 全自动活检针
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WO2020168485A1 (zh) * 2019-02-20 2020-08-27 王沁 具有两种激发形式的活检针
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