WO2022226944A1 - 全自动穿刺针联动激发装置及方法、全自动穿刺针 - Google Patents

全自动穿刺针联动激发装置及方法、全自动穿刺针 Download PDF

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Publication number
WO2022226944A1
WO2022226944A1 PCT/CN2021/091190 CN2021091190W WO2022226944A1 WO 2022226944 A1 WO2022226944 A1 WO 2022226944A1 CN 2021091190 W CN2021091190 W CN 2021091190W WO 2022226944 A1 WO2022226944 A1 WO 2022226944A1
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WO
WIPO (PCT)
Prior art keywords
needle
block
linkage
needle seat
seat
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PCT/CN2021/091190
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English (en)
French (fr)
Inventor
邹军军
王沁
王宝中
朱瑜
顾伟
Original Assignee
苏州市立普医疗科技有限公司
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.)
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Application filed by 苏州市立普医疗科技有限公司 filed Critical 苏州市立普医疗科技有限公司
Priority to PCT/CN2021/091190 priority Critical patent/WO2022226944A1/zh
Publication of WO2022226944A1 publication Critical patent/WO2022226944A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00—Instruments for taking body samples for diagnostic purposes; Other methods or instruments for diagnosis, e.g. for vaccination diagnosis, sex determination or ovulation-period determination; Throat striking implements
    • A61B10/02—Instruments for taking cell samples or for biopsy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/34—Trocars; Puncturing needles

Definitions

  • the invention relates to the technical field of puncture equipment, in particular to an automatic puncture needle linkage excitation device and method, and an automatic puncture needle.
  • the puncture needle is an important tool in this type of ultrasound-guided surgery.
  • the puncture needle currently used for biopsy usually adopts the structure of the inner and outer needles. When used, the inner needle is first triggered to puncture the target area, and then the outer needle is triggered to follow the inner needle to puncture, and the inner needle passes through the inner needle. The cutting of the needle tip and the outer needle tip cuts a part of the tissue in the target area, which is placed in the accommodating cavity at the end of the inner needle tip, and taken out together with the withdrawal of the puncture needle for biopsy.
  • the invention provides a fully automatic puncture needle linkage excitation device and method, and an automatic puncture needle.
  • the excitation device has a simple structure and is easy to operate.
  • an automatic puncture needle linkage excitation method the automatic puncture needle includes an inner needle seat, an outer needle seat and a linkage rod, and the method includes the following steps: the inner needle seat is along the direction of the injection needle.
  • the fully automatic puncture needle further includes a shift block, the shift block is arranged on the needle injection stroke of the inner needle seat and the outer needle seat, and the shift block includes a plurality of sets of blocks with different heights along the injection needle direction.
  • the two blocking surfaces of the gear shifting structure in the same group are flush; the blocking surfaces are used to block the inner needle seat and the outer needle seat.
  • the linkage rod is provided with an escape groove for connecting the cushion block, and the cushion block is connected with the shift block; the steps of adjusting the movement stroke of the inner needle seat and the outer needle seat in the direction of the needle by switching different groups of blocking surfaces It also includes: when the shifting block is switched to the designated blocking surface, the spacer block is inserted into the avoidance groove.
  • a fully automatic puncture needle linkage excitation device which includes an inner needle seat, an outer needle seat, a linkage rod and a cushion block;
  • the linkage rod is provided with a trigger receiving block and a trigger linkage block;
  • the block is located on the injection needle stroke of the inner needle seat and is used for abutting with the first end of the inner needle seat, and the trigger linkage block is attached to the second end of the outer needle seat;
  • the cushion block is detachably arranged on the second end of the trigger receiving block , used to shorten the distance between the trigger receiving block and the inner needle seat; when the trigger receiving block or the inner needle seat is activated, the inner needle seat abuts on the trigger receiving block or the cushion block and drives the linkage rod to move synchronously, so that the trigger linkage block moves together, and the trigger linkage block pushes
  • the outer needle seat is triggered to realize the linkage excitation of the inner needle seat and the outer needle seat.
  • it also includes a shift block; the end of the first side of the shift block is provided with at least one set of blocking surfaces; the inner needle seat, the outer needle seat and the linkage rod are located on the side of the shift block with the blocking surface , and the blocking surface is located on the injection needle stroke of the inner needle seat and the outer needle seat, and is used to block the movement of the inner needle seat and the outer needle seat.
  • the first side surface of the shift block includes two groups of shift structures that are arranged side by side perpendicular to the direction of the needle; each group of shift structures includes two blocking surfaces that are perpendicular to the direction of the needle and are arranged at intervals in the direction, They are used to block the inner needle seat and the outer needle seat respectively; the two blocking surfaces of the same group of gear shifting structures are flush, and the blocking surfaces of different groups of shifting structures have a height difference along the direction of the needle; the movement of the inner needle seat and the outer needle seat The direction is vertical to the blocking surface, and different groups of blocking surfaces can be switched to adjust the moving stroke of the inner needle seat and the outer needle seat when moving, so as to achieve the gear adjustment effect of the inner and outer needles.
  • one blocking surface of another group is disposed between two blocking surfaces of the same group, so that the two blocking surfaces of the same group are arranged at intervals.
  • the spacer block is located on the first side of the shift block, and the spacer block is connected with the end of the shift block;
  • the linkage rod further includes an avoidance groove for connecting the spacer block, and the avoidance groove is located at the trigger receiving block and the trigger linkage block. and the depth of the avoidance groove is less than the thickness of the spacer block; when the shift block is switched to the designated blocking surface, the spacer block is inserted into the avoidance groove, and when the linkage is activated, the inner needle seat abuts on the spacer block and drives the linkage rod Synchronized movement towards the blocking surface.
  • the linkage rod is in the shape of a cuboid
  • the trigger receiving block and the avoidance groove are located on the first side of the first end of the linkage rod
  • the trigger linkage block is located on the second side of the second end of the linkage rod
  • the first side and the second side are for adjacent faces.
  • an automatic puncture needle including the above-mentioned automatic puncture needle linkage excitation device.
  • the linkage rod when the linkage rod can be adapted to different injection needle strokes of the inner needle base and the outer needle base, when the stroke of the injection needle is long, the inner needle base abuts on the front end of the linkage rod, and when the injection needle When the stroke is short, the inner needle seat abuts on the cushion block, and the linkage rod can be driven in both ways, so as to realize the interval linkage excitation of the inner needle seat and the outer needle seat.
  • the spacer extends the distance from the front end of the linkage rod to the inner needle seat, and has the function of length compensation to ensure that the inner needle seat can also activate the linkage rod in the case of shifting gears.
  • FIG. 1 is a schematic structural diagram of a fully automatic puncture needle provided by an embodiment of the present invention
  • FIG. 2 is a front view of the fully automatic puncture needle provided by an embodiment of the present invention.
  • FIG. 3 is a cross-sectional view of a fully automatic puncture needle provided by an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of an inner casing in a fully automatic puncture needle provided by an embodiment of the present invention
  • FIG. 6 is a front view of the front end of the inner housing in the fully automatic puncture needle provided by an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of a rear stopper in a fully automatic puncture needle provided by an embodiment of the present invention.
  • FIG. 8 is a top view of the inner casing of the fully automatic puncture needle provided by an embodiment of the present invention.
  • Figure 9 is a sectional view at "A-A" in Figure 8.
  • FIG. 10 is a schematic structural diagram of a linkage rod in a fully automatic puncture needle provided by an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a stopper in the fully automatic puncture needle provided by an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of another perspective view of the adjustment block in the fully automatic puncture needle provided by an embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of a winding button in a fully automatic puncture needle provided by an embodiment of the present invention.
  • FIG. 14 is a schematic structural diagram of the inner and outer needle hubs of the fully automatic puncture needle provided by an embodiment of the present invention.
  • 15 is a front view of the fully automatic puncture needle provided by an embodiment of the present invention without a casing;
  • 16 is a cross-sectional view of the fully automatic puncture needle provided by an embodiment of the present invention without a casing;
  • 17 is a cross-sectional view of the fully automatic puncture needle provided by an embodiment of the present invention without a casing;
  • FIG. 19 is a cross-sectional view of the second gear state in the case of no housing in the fully automatic puncture needle provided by an embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of the fully automatic puncture needle provided by an embodiment of the present invention
  • FIG. 2 is a front view of the fully automatic puncture needle provided by an embodiment of the present invention
  • FIG. 3 is a cross-sectional view of the fully automatic puncture needle provided by an embodiment of the present invention
  • FIG. 4 is an exploded view of the fully automatic puncture needle provided by the embodiment of the present invention.
  • the fully automatic puncture needle includes an outer casing, an inner casing, an inner needle assembly, an outer needle assembly, a linkage assembly for triggering the inner needle assembly and the outer needle assembly in linkage, and adjusting the inner needle assembly and the outer needle assembly. Shifting assembly for the range gear of the outer needle assembly.
  • the needle tip is taken as the front, and the outer casing with the trigger button is on the top.
  • Figure 5 is a schematic structural diagram of the inner casing in the fully automatic puncture needle provided by the embodiment of the present invention
  • Figure 6 is a front view of the front end of the inner casing in the fully automatic puncture needle provided by the embodiment of the present invention
  • Figure 7 is an embodiment of the present invention
  • Figure 8 is a top view of the inner casing of the fully automatic puncture needle provided by an embodiment of the present invention
  • Figure 9 is a cross-sectional view at "A-A" in Figure 8.
  • the inner needle assembly includes an inner needle 1a, an inner needle hub 4a for fixing the inner needle 1a, an inner needle hub guide rod 3a, and an inner needle hub spring 2a.
  • the inner needle hub 4a has an inner needle hub lock hook 4a1 that can be locked or unlocked with the locking block 9f of the inner housing 9, and a guide hole (not shown) through which the inner needle hub guide rod 3a passes.
  • the front end of the inner needle seat 4a is fixedly provided with an inner needle button connecting seat 4a3 for connecting the inner needle winding button 5a.
  • the inner needle seat spring 2a passes through the inner needle seat guide rod 3a, and its two ends are respectively abutted against the inner needle seat 4a and the rear stopper 9e.
  • FIG. 14 is a schematic structural diagram of the inner and outer needle hubs of the fully automatic puncture needle provided by the embodiment of the present invention.
  • the outer needle assembly includes an outer needle 1b, an outer needle hub 4b for fixing the outer needle 1b, an outer needle hub guide rod 3b, and an outer needle hub spring 2b.
  • the outer needle hub 4b has an outer needle hub lock hook 4b1 that can be locked or unlocked with the locking block 9f of the inner housing 9, and a guide hole (not shown) through which the outer needle hub guide rod 3b passes.
  • the front end of the seat 4b is fixedly provided with an outer needle button connecting seat 4b3 for connecting the outer needle winding button 5b.
  • the outer needle seat spring 2b is passed through the outer needle seat guide rod 3b, and its two ends are respectively abutted against the outer needle seat 4b and the rear stopper 9e.
  • the linkage assembly includes a linkage rod 8, a linkage guide block 8a, a trigger receiving block 8b, a trigger linkage block 8c and an escape groove 8d.
  • the connecting rod guide block 8a is slidably arranged in the connecting rod guide groove on the outer casing.
  • the trigger receiving block 8b includes an abutment surface 8b1 for receiving the impact of the inner needle trigger block on the inner needle hub 4a, and causing the linkage assembly to be moved together by the inner needle hub 4a.
  • the trigger slope 8c1 of the trigger linkage block 8c hits the outer needle seat locking hook 4b1, and makes it fall off and unlock from the locking block 9f of the inner housing 9, so that the outer needle seat 4b is triggered , the outer needle 1b pops up under the action of the outer needle seat spring 2b. Therefore, after the inner needle 1a and the inner needle seat 4a are ejected, the outer needle 1b and the outer needle seat 4b are ejected following.
  • a piece of tissue is removed from the target site by cutting the ends of the inner needle 1a and the outer needle 1b, and stored in the storage groove 1a1 at the end of the inner needle 1a (It can be taken out after pushing down the outer needle 1b).
  • the avoidance groove 8d in the linkage assembly is used to avoid the cushion block 12 in the gear shifting assembly, and the specific avoidance method can be referred to the subsequent description.
  • FIG. 11 is a schematic structural diagram of the stopper in the automatic puncture needle provided by the embodiment of the present invention
  • FIG. 12 is a schematic structural diagram of the stopper in the automatic puncture needle provided by the embodiment of the present invention from another perspective.
  • the shift assembly includes a shift block 10 , a handle 11 and a cushion block 12 that slide left and right in the inner casing 9 .
  • Fig. 15 is a front view of the fully automatic puncture needle provided by an embodiment of the present invention without a casing
  • Fig. 16 is a cross-sectional view of the fully automatic puncture needle provided by an embodiment of the present invention without a casing
  • Fig. 15 is a front view of the fully automatic puncture needle provided by an embodiment of the present invention without a casing
  • Fig. 16 is a cross-sectional view of the fully automatic puncture needle provided by an embodiment of the present invention without a casing
  • Fig. 16 is a cross-sectional view of the fully automatic puncture needle provided by an embodiment of the present invention without a casing
  • Figure 18 is a sectional view of the fully automatic puncture needle provided by an embodiment of the present invention without a casing;
  • Figure 18 is a sectional view of the first gear state provided by an embodiment of the present invention;
  • the shift block 10 has two first blocking surfaces 10a and two second blocking surfaces 10b. According to the left and right sliding of the shift block 10, the inner needle seat 4a and the outer needle can be selected.
  • the seat 4b After being triggered, the seat 4b hits the first blocking surface 10a, or hits the second blocking surface 10b (the abutting ends of the inner needle seat 4a and the outer needle seat 4b collide with the first blocking surface 10a or the second blocking surface 10b). ).
  • the inner needle seat 4a and the outer needle seat 4b impact on the first blocking surface 10a, their moving distance is relatively large, that is, the range of the inner needle 1a and the outer needle 1b is relatively long, and the inner needle seat 4a and the outer needle seat 4b have a relatively long distance.
  • the needle hub 4b hits the second blocking surface 10b, its moving distance is smaller, that is, the range of the inner needle 1a and the outer needle 1b is shorter.
  • the handles 11 are provided on the left and right sides of the shift block 10 and extend out of the inner and outer casings for manually adjusting the shift block 10 position to achieve gear adjustment.
  • the part of the handle 11 protruding from the housing is a round rod, and the handle 11 on each side has two grooves 11a, and the grooves 11a are used for locking after switching the gears.
  • the shift positioning block 9j on the inner casing 9 clamps the round rod of the handle 11 when the handle 11 moves. When the shift positioning block 9j slides from the round rod into the groove 11a, it hits the There is a crashing sound on the groove 11a, indicating that the gear shift is completed.
  • a pad block 12 is also provided on the shift block 10 , which is fixedly connected to the shift block 10 through an elastic rod.
  • the pad block 12 follows the shift block. 10 slide left and right together, when the shift block 10 is in the second block, the cushion block 12 slides to between the trigger receiving block 8b of the linkage assembly and the inner needle seat 4a. Since the moving distance between the inner needle hub 4a and the outer needle hub 4b is small in the second gear, after the inner needle hub 4a is triggered, it cannot activate the linkage assembly (the shortening of the moving distance results in no contact between the inner needle hub 4a and the linkage assembly) , so that the outer needle hub 4b cannot be activated.
  • the spacer block 12 is used as compensation for the smaller movement distance of the inner needle seat 4a of the second gear. After the spacer block 12 is set, the shift block 10 can also smoothly activate the outer needle seat in the second gear position. 4b.
  • the thickness of the spacer 12 is determined by the distance between the first blocking surface 10a and the second blocking surface 10b.
  • the inner housing 9 includes a base plate 9a, a needle groove 9b, a side plate 9c, a front stopper 9d, a rear stopper 9e, a locking block 9f, an inner needle locking rib 9g, and an outer needle locking rib 9h , Gear shifting chute 9i, gear shifting positioning block 9j, winding button slide rail 9k, front locking buckle 9l and shell locking buckle 9m.
  • the needle groove 9b is located in the middle of the upper surface of the base plate 9a, and allows the inner needle 1a and the outer needle 1b to pass therethrough.
  • the side plates 9c are fixedly arranged on both sides of the base plate 9a for protecting and supporting the components of the inner casing 9 .
  • the front stopper 9d is fixedly arranged on the front part of the two side plates 9c, and is mainly used to form the winding button slide rail 9k together with the base plate 9a. In addition, it also has a needle hole 9d1 communicating with the needle groove 9b, a connecting rod guide groove 9d2 for guiding the connecting rod guide block 8a, and two for clamping the inner needle seat guide rod 3a and the outer needle seat guide respectively.
  • the fixing hole 9d3 of the rod 3b is arranged on the front part of the two side plates 9c, and is mainly used to form the winding button slide rail 9k together with the base plate 9a.
  • it also has a needle hole 9d1 communicating with the needle groove 9b, a connecting rod guide groove 9d2 for guiding the connecting rod guide block 8a, and two for clamping the inner needle seat guide rod 3a and the outer needle seat guide respectively.
  • the fixing hole 9d3 of the rod 3b is fixedly arranged on the front part of the two side plates 9c, and is mainly
  • the rear stopper 9e is clamped in the grooves at the rear of the base plate 9a and the side plate 9c through the bumps 9e1 on the bottom and both sides of the rear stopper 9e, and the rear stopper 9e There are two spring grooves 9e2 for supporting the spring.
  • the rear stopper 9e has a support platform 9e3, and the side of the trigger linkage block 8c away from the linkage rod 8 is provided with an extension portion 8e extending along the length direction of the linkage rod 8, and the support platform 9e3 is used to support the rear of the extension portion 8e.
  • a support platform 9e3 for supporting the rear end of the extension portion 8e is provided at the rear end.
  • the locking block 9f is fixed horizontally between the two side plates 9c, and has an inner needle locking rib 9g for hooking the locking hook on the inner needle seat 4a and an outer needle locking edge for hooking the locking hook on the outer needle seat 4b.
  • the lower surface of the middle part of the locking block 9f has a second guide groove 9f1 for guiding the link rod 8, and the second guide groove 9f1 limits the position of the link rod 8 in the left, right and upper directions.
  • the locking block 9f also has a guide surface 9f2 extending horizontally to the rear.
  • the guide surface 9f2 is used to abut against the trigger slope 8c1 on the linkage rod 8 to play a guiding role, so as to prevent the trigger slope 8c1 from touching other structures. got stuck.
  • the shift positioning block 9j is used to clamp the handle 11 of the shift assembly.
  • the shift positioning block 9j slides into the groove 11a from the round rod of the handle 11 (refer to FIG. 11 and FIG. 12 )
  • the impact on the groove 11a is emitted.
  • the sound of impact indicates that the gear shift is completed.
  • the shift positioning block 9j is only arranged in the shift chute 9i on one side, so that when adjusting to different gears, it strikes different parts of the handle 11 and emits different sounds to increase the discrimination of the gears.
  • the front locking buckles 91 are provided on two protrusions on the lower surface of the front part of the base plate 9a, and are used to lock the front fixing sleeve 6 clamped on the front part of the inner casing 9 to prevent it from falling off.
  • the shell locking buckle 9m is provided on the side plate 9c, and is used to lock the rear fixing sleeve 7 sleeved outside the inner casing 9, so as to facilitate the disassembly and assembly of the rear fixing sleeve 7.
  • the shell locking buckle 9m includes a boss that protrudes to the outside. and an elastic link that increases its elastic deformation capacity.
  • the outer casing includes a front fixing sleeve 6, a rear fixing sleeve 7, an inner needle winding button 5a and an outer needle winding button 5b.
  • the front fixing sleeve 6 is provided with a slot for engaging with the base plate 9a, and is mutually locked with the base plate 9a through the front locking buckle 91.
  • the front fixing sleeve 6 has a guide ring 6a for passing the inner needle winding button 5a and the outer needle winding button 5b.
  • the rear fixing sleeve 7 is sheathed outside the inner casing 9 from the rear of the inner casing 9 to protect the inner casing 9 and its inner parts.
  • the two sides of the rear fixing sleeve 7 have locking holes that cooperate with the shell locking buckle 9m, and the rear fixing sleeve 7 also has a trigger button 7a.
  • the trigger button 7a is located on the upper string.
  • the trigger button 7a pushes the inner needle seat locking hook 4a1 to disengage the inner needle locking edge 9g on the locking block 9f, so that the inner needle seat 4a is locked. Triggered and ejected under the action of the inner needle seat spring 2a.
  • the area of the rear fixing sleeve 7 corresponding to the handle 11 on the shifting block 10 has a through hole.
  • the diameter of the through hole is larger than the diameter of the end of the handle 11. in the hole.
  • an operating hand position 111 is provided at the end of the handle 11, and the diameter of the operating hand position is larger than the diameter of the through hole. If a circular plate structure is adopted, the operating hand position can be used for further limiting.
  • the shift block 10 when adjusted, it includes two shifts, and two handles 11 are provided on the shift block 10.
  • the rear fixing sleeve 7 is provided with a half-circle raised rib portion 7b on the outer periphery of the trigger button 7a, and the height of the rib portion 7b is slightly higher than
  • the trigger button 7a protrudes from the height of the rear fixing sleeve 7, and the baffle 7b is located at the front of the trigger button 7a.
  • the inner needle winding button 5a has an inner needle pressing surface 5a1, an inner needle button connecting column 5a2 and an inner needle button guiding column 5a3 snapped with the inner needle button connecting seat 4a3.
  • the inner needle button guide post 5a3 is slidably arranged in the gap between the guide ring 6a and the front stopper 9d to maintain stability.
  • the inner needle button connecting column 5a2 and the inner needle button guiding column 5a3 are respectively located at the upper and lower ends of the inner needle winding button 5a to improve the stability when the inner needle winding button 5a is pressed.
  • the outer needle winding button 5b includes an outer needle pressing surface 5b1, an outer needle button connecting column 5b2 and an outer needle button guiding column 5b3.
  • the outer needle winding button 5b and the inner needle winding button 5a are symmetrical with each other about the axis, and will not be repeated here. .
  • the inner needle pressing surface 5a1 and the outer needle pressing surface 5b1 are also provided with pressing threads or indication labels, or pressing threads with an indication function, and the indication labels can be marked with 1 and 2, etc., to remind the operation sequence. Increase the effect of friction.
  • the puncture operation is as follows:
  • Adjust the shift assembly according to the puncture requirement, namely push the handle 11 to move the shift block 10 and adjust to the desired gear (the gear can only be adjusted when both the inner needle and the outer needle are in the winding state).
  • the inner needle seat 4a hits the trigger receiving block 8b of the linkage rod 8 after being triggered before moving to the first blocking surface 10a, and the linkage rod 8 is driven by the linkage rod 8
  • the upper trigger slope 8c1 hits the outer needle seat locking hook 4b1, so that the outer needle seat locking hook 4b1 moves downward and is unhooked from the outer needle locking edge 9h, so that the outer needle seat 4b is triggered and pops out under the action of the outer needle seat spring 2b, Until the outer needle hub 4b hits the shifting block 10 and stops, during this process, the outer needle 1b is pushed out and stopped synchronously along with the outer needle hub 4b, and a puncturing process of the outer needle is completed.
  • the stroke of the inner needle seat 4a after being triggered is shortened, and the receiving block 8b cannot be touched.
  • the inner needle seat 4a can first impact on the spacer block 12, and then the power is transmitted to the receiving block 8b through the spacer block 12 to complete the triggering of the outer needle 1b.
  • a section of tissue is removed from the target site by shearing the ends of the inner needle 1a and the outer needle 1b, and the section of tissue is stored in the storage groove 1a1 at the end of the inner needle 1a.
  • the inner needle assembly and the outer needle assembly are blocked by the blocking surface on the shifting structure, so that the inner needle assembly and the outer needle assembly can stop moving within a limited stroke
  • the shifting block is provided with multiple sets of Gear shifting structure, by switching different gear shifting structures, the inner needle assembly and the outer needle assembly can be switched to different stroke distances, and then the puncture depths of the inner needle and the outer needle can be switched to achieve the purpose of shifting the puncture needle.
  • the gear shifting assembly has the advantages of simple structure, convenient adjustment and the like, and can reduce the design and production cost of the puncture needle.

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Abstract

本发明涉及穿刺设备技术领域，特别地涉及一种全自动穿刺针联动激发装置及方法、全自动穿刺针，该方法包括如下步骤：内针座沿射针方向移动，并抵接联动杆的前端，使联动杆沿射针方向移动，联动杆的末端驱动外针座移动，从而实现内针座和外针座的间隔联动激发；或者，内针座沿射针方向移动，并抵接联动杆上的垫块，使联动杆沿射针方向移动，联动杆的末端驱动外针座移动，从而实现内针座和外针座的间隔联动激发。根据本发明提供的技术方案，垫块延伸了联动杆前端至内针座的间距，具有长度补偿的作用，可确保在调挡情况下，内针座也可激发联动杆。

Description

全自动穿刺针联动激发装置及方法、全自动穿刺针 技术领域
本发明涉及穿刺设备技术领域，特别地涉及一种全自动穿刺针联动激发装置及方法、全自动穿刺针。
背景技术
在超声引导下将穿刺针引导到人体的目标位，以实现细胞学活检、组织学活检、囊肿抽吸和治疗等是目前重要的疾病监测和治疗手段。穿刺针为这类超声引导手术中的重要工具，目前用于活检的穿刺针，通常采用内外针的结构，使用时，先行触发内针穿刺目标区域，再触发外针跟随内针穿刺，通过内针针头和外针针头的剪切，将目标区域的组织切下一部分，放置在内针针头端部的容纳腔内，并随着穿刺针的拔出被一起带出，用于活检。
但是，由于需要获取的目标区域的大小形状不同，所以根据目标区域的具体情况医生通常会选取不同射程(内外针激发后移动的位移)的活检穿刺针，以满足活检的需要。为了满足穿刺针的多射程使用需求，目前，市场上出现了一种能够调节射程的穿刺针，其通过调节旋钮等复杂传动结构实现内外针射程的调节。虽然实现了射程调节，但是，其复杂的结构会造成生产成本的大幅度提升，进而提高手术成本，以及复杂的结构影响活检针的稳定性，可能出现卡壳甚至更为严重的医疗事故。
发明内容
本发明提供了一种全自动穿刺针联动激发装置及方法、全自动穿刺针，通过设置垫块结构，可实现多档位联动激发，该激发装置的结构简单，操作简便。
本发明的一个方面，提供了一种全自动穿刺针联动激发方法，所述全自动穿刺针包括内针座、外针座和联动杆，所述方法包括如下步骤：内针座沿射针方向移动，并抵接联动杆的前端，使联动杆沿射针方向移动，联动杆的末端驱动外针座移动，从而实现内针座和外针座的间隔联动激发；或者，内针座沿射针方向移动，并抵接联动杆上的垫块，使联动杆沿射针方向移动，联动杆的末端驱动外针座移动，从而实现内针座和外针座的间隔联动激发。
可选地，所述全自动穿刺针还包括调档块，调档块设置在内针座和外针座的射针行程上，调档块上包括多组沿射针方向具有不同高度的阻挡面，其中，同组调档结构的两个阻挡面平齐；阻挡面用于阻挡内针座和外针座，内针座和外针座的间隔联动激发前，通过切换不同组的阻挡面来调节内针座和外针座在射针方向的移动行程，从而达到内外针调档操作。
可选地，联动杆上设有用于连接垫块的避让槽，垫块与调档块连接；通过切换不同组的阻挡面来调节内针座和外针座在射针方向的移动行程的步骤还包括：调档块切换至指定阻挡面时，垫块插入避让槽。
本发明的另一个方面，还提供了一种全自动穿刺针联动激发装置，包括内针座、外针座、联动杆和垫块；联动杆上设有触发接收块和触发联动块；触发接收块位于内针座的射针行程上用于与内针座的第一端抵接，触发联动块与外针座的第二端贴合；垫块可拆卸地设于触发接收块第二端，用于缩短触发接收块与内针座的间距；联动激发时，内针座抵接在触发接收块或垫块上并带动联动杆同步移动，从而使触发联动块共同移动，触发联动块推动外针座触发，实现内针座和外针座的联动激发。
可选地，还包括调档块；调档块的第一侧的端部设有至少一组阻挡面；内针座、外针座和联动杆位于调档块的设有阻挡面的一侧，并且阻挡面位于内针座和外针座的射针行程上，用于阻挡内针座和外针座移动。
可选地，调档块的第一侧面包括两组垂直于射针方向并列设置的调档 结构；每组调档结构包括垂直于射针方向并且在该方向上间隔设置的两个阻挡面，分别用于阻挡内针座和外针座；同组调档结构的两个阻挡面平齐，不同组调档结构的阻挡面沿射针方向具有高度差；内针座和外针座的移动方向垂直阻挡面，在移动时能够切换不同组的阻挡面来调节内针座和外针座的移动行程，从而达到内外针调档作用。
可选地，同组的两个阻挡面之间设置有另一组的一个阻挡面，从而使同组的两个阻挡面间隔设置。
可选地，垫块位于调档块的第一侧，并且垫块与调档块的端部连接；联动杆还包括用于连接垫块的避让槽，避让槽位于触发接收块和触发联动块之间，并且避让槽的深度小于垫块的厚度；调档块切换至指定阻挡面时，垫块插接于避让槽内，联动激发时，内针座抵接在垫块上并带动联动杆向阻挡面同步移动。
可选地，联动杆呈长方体形，触发接收块和避让槽位于联动杆第一端第一侧面，触发联动块位于联动杆第二端第二侧面，所述第一侧面与所述第二侧面为相邻面。
本发明的又一个方面，还提供了一种全自动穿刺针，包括上述全自动穿刺针联动激发装置。
根据本发明提供的技术方案，联动杆可适配不同的内针座和外针座的射针行程时，当射针行程较长时，内针座抵接在联动杆的前端，当射针行程较短时，内针座抵接在垫块上，两种方式均可驱动联动杆，从而实现内针座和外针座的间隔联动激发。垫块延伸了联动杆前端至内针座的间距，具有长度补偿的作用，可确保在调挡情况下，内针座也可激发联动杆。
附图说明
为了说明而非限制的目的，现在将根据本发明的优选实施例、特别是参考附图来描述本发明，其中：
图1是本发明实施方式提供的全自动穿刺针的结构示意图；
图2是本发明实施方式提供的全自动穿刺针的主视图；
图3是本发明实施方式提供的全自动穿刺针的剖视图；
图4是本发明实施方式提供的全自动穿刺针的爆炸图；
图5是本发明实施方式提供的全自动穿刺针中内壳体的结构示意图；
图6是本发明实施方式提供的全自动穿刺针中内壳体前端的主视图；
图7是本发明实施方式提供的全自动穿刺针中后挡块的结构示意图；
图8是本发明实施方式提供的全自动穿刺针中内壳体的俯视图；
图9是图8中“A-A”处的剖视图；
图10是本发明实施方式提供的全自动穿刺针中连动杆的结构示意图；
图11是本发明实施方式提供的全自动穿刺针中调挡块的结构示意图；
图12是本发明实施方式提供的全自动穿刺针中调挡块另一视角的结构示意图；
图13是本发明实施方式提供的全自动穿刺针中上弦按钮的结构示意图；
图14是本发明实施方式提供的全自动穿刺针中外针座的结构示意图；
图15是本发明实施方式提供的全自动穿刺针中无外壳情况下的主视图；
图16是本发明实施方式提供的全自动穿刺针中无外壳情况下的剖视图；
图17是本发明实施方式提供的全自动穿刺针中无外壳情况下的剖视图；
图18是本发明实施方式提供的全自动穿刺针中无外壳情况下第一挡状态的剖视图；
图19是本发明实施方式提供的全自动穿刺针中无外壳情况下第二挡状态的剖视图。
具体实施方式
下面结合附图和实施方式对本申请作进一步的详细说明。可以理解的是，此处所描述的具体实施方式仅用于解释相关内容，而非对本申请的限制。为简明起见，在本申请各实施方式的描述中，对于相同或者类似的装 置/方法步骤，使用相同或者相似的附图标记。
需要说明的是，在不冲突的情况下，本申请中的实施方式及实施方式中的特征可以相互组合。
图1是本发明实施方式提供的全自动穿刺针的结构示意图；图2是本发明实施方式提供的全自动穿刺针的主视图；图3是本发明实施方式提供的全自动穿刺针的剖视图；图4是本发明实施方式提供的全自动穿刺针的爆炸图。如图1至图4所示，全自动穿刺针包括外壳体、内壳体、内针组件、外针组件、用于联动触发内针组件和外针组件的联动组件、以及调节内针组件和外针组件射程挡位的调档组件。
下面结合附图对全自动穿刺针的各部件进行详细说明，其中，在进行零部件位置描述时，以针尖端为前，外壳体具有触发按钮一面为上。
图5是本发明实施方式提供的全自动穿刺针中内壳体的结构示意图；图6是本发明实施方式提供的全自动穿刺针中内壳体前端的主视图；图7是本发明实施方式提供的全自动穿刺针中后挡块的结构示意图；图8是本发明实施方式提供的全自动穿刺针中内壳体的俯视图；图9是图8中“A-A”处的剖视图。如图1至图9所示，内针组件包括内针1a、固定内针1a的内针座4a、内针座导向杆3a和内针座弹簧2a。在内针座4a上具有可以与内壳体9的锁定块9f锁定或者解锁的内针座锁钩4a1，以及供内针座导向杆3a穿过的导向孔(未示出)，另外，在内针座4a的前端固定设置有用于连接内针上弦按钮5a的内针按钮连接座4a3。内针座弹簧2a穿设在内针座导向杆3a上，其两端分别于内针座4a和后挡块9e相抵。
图14是本发明实施方式提供的全自动穿刺针中外针座的结构示意图。如图1至图9、以及图14所示，外针组件包括外针1b、固定外针1b的外针座4b、外针座导向杆3b和外针座弹簧2b。外针座4b上具有可以与内壳体9的锁定块9f锁定或者解锁的外针座锁钩4b1，以及供外针座导向杆3b穿过的导向孔(未示出)，另外，外针座4b的前端固定设置有用于连接 外针上弦按钮5b的外针按钮连接座4b3。外针座弹簧2b穿设在外针座导向杆3b上，其两端分别于外针座4b和后挡块9e相抵。
图10是本发明实施方式提供的全自动穿刺针中连动杆的结构示意图。如图10所示，联动组件包括连动杆8、连杆导向块8a、触发接收块8b、触发联动块8c和避让槽8d。其中，连杆导向块8a滑动设置在外壳体上的连杆导向槽内。触发接收块8b包括抵接面8b1，用于接收内针座4a上的内针触发块的撞击，并使得联动组件被内针座4a连带运动。当联动组件被内针座4a带动后，触发联动块8c的触发斜面8c1撞击外针座锁钩4b1，并使其从内壳体9的锁定块9f上脱落解锁，使得外针座4b被触发，外针1b在外针座弹簧2b作用下弹出。从而实现在内针1a与内针座4a弹出后，外针1b与外针座4b跟随弹出。在内针1a和外针1b的先后弹出的工作过程中，通过内针1a和外针1b端部的剪切，在目标部位取下一段组织，储存在内针1a端部的存储槽1a1内(推下外针1b后可以取出)。联动组件中避让槽8d用于避让调档组件中的垫块12，具体避让方式参考后续说明。
图11是本发明实施方式提供的全自动穿刺针中调档块的结构示意图；图12是本发明实施方式提供的全自动穿刺针中调档块另一视角的结构示意图。如图11和图12所示，调档组件包括在内壳体9内左右滑动的调档块10、把手11和垫块12。
调档块10上可设置多个阻挡面，从而实现多个挡位调节，本发明实施方式中，以两个阻挡面为例，即第一阻挡面10a和第二阻挡面10b。图15是本发明实施方式提供的全自动穿刺针中无外壳情况下的主视图；图16是本发明实施方式提供的全自动穿刺针中无外壳情况下的剖视图；图17是本发明实施方式提供的全自动穿刺针中无外壳情况下的剖视图；图18是本发明实施方式提供的全自动穿刺针中无外壳情况下第一挡状态的剖视图；图19是本发明实施方式提供的全自动穿刺针中无外壳情况下第二挡状态的剖视图。如图15至图19所示，调档块10上具有两个第一阻挡面10a和两个第二阻挡面10b，根据调档块10的左右滑动，可以选择让内针座4a和外针座4b在被触发后撞击在第一阻挡面10a上，或者撞击在 第二阻挡面10b(内针座4a和外针座4b的抵接端与第一阻挡面10a或第二阻挡面10b撞击)。本发明实施方式中，内针座4a和外针座4b撞击在第一阻挡面10a上时其移动的距离较大，即内针1a和外针1b的射程较长，内针座4a和外针座4b撞击在第二阻挡面10b上时其移动的距离较小，即内针1a和外针1b的射程较短。
继续参考图15至图19、以及图5至图9，如图所示，把手11设置在调档块10的左右两侧，并伸出内壳体和外壳体用于手动调节调档块10的位置，以实现挡位的调节。把手11伸出壳体部分为圆杆，每一侧的把手11具有两个凹槽11a，凹槽11a用于切换挡位后的锁定。与凹槽11a相对应的，内壳体9上的调档定位块9j在把手11移动时卡紧把手11的圆杆，当调档定位块9j从圆杆滑入凹槽11a时，撞击在凹槽11a上发出撞击的声音，提示调档完成。
如图11和图12所示，在调档块10上还设置有垫块12，通过具有弹性的杆件与调档块10固定连接，在进行调档操作时，垫块12跟随调档块10一同左右滑动，当调档块10处于第二挡时，垫块12在滑动至联动组件的触发接收块8b与内针座4a之间。由于在第二挡时，内针座4a和外针座4b的移动距离较小，内针座4a被触发后，其无法激发联动组件(移动距离缩短导致内针座4a与联动组件无接触)，进而无法激发外针座4b。本发明实施方式中，垫块12作为第二挡的内针座4a移动距离变小的补偿，在设置垫块12后，调档块10在第二挡位下，也可顺利激发外针座4b。其中，垫块12的厚度通过第一阻挡面10a与第二阻挡面10b的距离决定。
如图5至图9所示，内壳体9包括基板9a、针槽9b、侧板9c、前挡块9d、后挡块9e、锁定块9f、内针锁定棱9g、外针锁定棱9h、调档滑槽9i、调档定位块9j、上弦按钮滑轨9k、前锁定扣9l和外壳锁定扣9m。针槽9b位于基板9a上表面的中部，供内针1a和外针1b通过。侧板9c固定设置于基板9a的两侧，用于保护和支撑内壳体9的部件。前挡块9d固定设置在两个侧板9c的前部，主要用于与基板9a一起构成上弦按钮滑轨9k。此外，其上还具有与针槽9b连通的针孔9d1、用于导向连杆导向块8a的 连杆导向槽9d2，以及两个分别用于卡设内针座导向杆3a和外针座导向杆3b的固定孔9d3。
继续参考图5至图9所示，如图所示，后挡块9e通过其底部和两侧的凸块9e1卡设在基板9a与侧板9c的后部的卡槽中，后挡块9e上具有两个用于支撑弹簧的弹簧槽9e2。此外，后挡块9e上具有一个支撑平台9e3，触发联动块8c的远离联动杆8的一侧设有沿联动杆8长度方向延伸的延伸部8e，支撑平台9e3用于支撑延伸部8e的后端部，由于连动杆8上的连杆导向块8a的长度较短，且位于前端部，因此，在后端部设置一个用于支撑延伸部8e的后端部的支撑平台9e3。锁定块9f固定横置在两个侧板9c之间，其上具有挂设内针座4a上锁钩的内针锁定棱9g和用于挂设外针座4b上的锁钩的外针锁定棱9h，锁定块9f的中部下表面具有导向连动杆8的第二导向槽9f1，第二导向槽9f1对连动杆8的左、右、上三个方向进行限位。锁定块9f上还具有向后部水平延伸的一个导向面9f2，导向面9f2用于抵住连动杆8上的触发斜面8c1起到引导作用，从而可防止触发斜面8c1碰触到其他结构而被卡住。
调档定位块9j用于卡紧调档组件的把手11，当调档定位块9j从把手11的圆杆滑入凹槽11a时(参考图11和图12)，撞击在凹槽11a上发出撞击的声音，提示调档完成。调档定位块9j只设置在一侧的调档滑槽9i内，如此，调节至不同挡位时撞击在把手11不同部位，发出不同声音，增加挡位的区分度。前锁定扣9l设置在基板9a前部下表面的两个凸起，用于锁定卡设在内壳体9前部的前固定套6防止其脱落。外壳锁定扣9m设置在侧板9c上，用于锁定套设在内壳体9外的后固定套7，从而方便后固定套7的拆装，外壳锁定扣9m包括向外侧凸起的凸台和增加其弹性形变能力的弹性连杆。
图13是本发明实施方式提供的全自动穿刺针中上弦按钮的结构示意图。如图1至图4、图13和图14所示，外壳体包括前固定套6、后固定套7、内针上弦按钮5a和外针上弦按钮5b。前固定套6上具有与基板9a卡接的卡槽，通过前锁定扣9l与基板9a相互锁定。前固定套6上具有一 个用于通过内针上弦按钮5a和外针上弦按钮5b的导向环6a。后固定套7从内壳体9的后部套在内壳体9外，用于对内壳体9及其内部件的保护。后固定套7的两侧部具有与外壳锁定扣9m相互配合的锁定孔，后固定套7上还具有一个触发按钮7a，当锁定孔与外壳锁定扣9m相互配合锁定时，触发按钮7a位于上弦后的内针座4a的内针座锁钩4a1上方，按下触发按钮7a后，触发按钮7a推动内针座锁钩4a1脱离锁定块9f上的内针锁定棱9g，使得内针座4a被触发，在内针座弹簧2a作用下弹出。
后固定套7对应调档块10上的把手11的区域具有通孔，通孔的直径大于把手11端部的直径，把手11紧贴内壳体9时可以全部没入后固定套7上的通孔中。另外，在把手11的端部设置操作手位111，操作手位的直径大于通孔的直径，如采用圆形板结构，进而可利用操作手位进一步进行限位。本发明实施方式中，挡位块10调节时包括两个挡位，在挡位块10上设置两个把手11，挡位调节操作时，挡位块10位于第一挡时，一侧的操作手位与后固定套7的外壁贴合，位于第二挡时，另一侧的操作手位与后固定套7的外壁贴合。
继续参考图1至图4、图13和图14，如图所示，后固定套7在触发按钮7a的外周设置了半圈凸起的挡边部7b，挡边部7b的高度略高于触发按钮7a凸出后固定套7的高度，且挡边部7b位于触发按钮7a的前部。由于手再抓握外壳体时，通常手指(特别是大拇指)容易有自前向后的滑动动作，(在医生操作穿刺针时可能需要切换不同的手握位置，手指的滑动会非常频繁)，非常容易触碰触发按钮7a造成误触发，因此，在触发按钮7a设置的挡边部7b能够有效阻挡误触发的发生，从而保证穿刺针使用的安全性能。
内针上弦按钮5a其具有内针按压面5a1、与内针按钮连接座4a3卡接的内针按钮连接柱5a2和内针按钮导向柱5a3。当内针按钮连接座4a3与内针按钮连接柱5a2卡接后形成一个完整的柱状，可在上弦按钮滑轨9k中滑动。内针按钮导向柱5a3滑动设置在导向环6a与前挡块9d的缝隙中，以保持稳定。内针按钮连接柱5a2和内针按钮导向柱5a3分别位于内针上 弦按钮5a上下两端，以提高按下内针上弦按钮5a时的稳定性。外针上弦按钮5b包括外针按压面5b1、外针按钮连接柱5b2和外针按钮导向柱5b3，外针上弦按钮5b与内针上弦按钮5a关于轴线相互对称，此处便不再一一赘述。其中，在内针按压面5a1和外针按压面5b1上还设置有按压螺纹或指示标签，或者具有指示作用的按压螺纹，指示标签可标注①和②等，起操作顺序提醒作用，按压螺纹其增大摩擦的作用。
本发明实施方式提供的全自动穿刺针，穿刺操作如下：
手动按下内针上弦按钮5a，使得内针座4a的内针座锁钩4a1挂在内针锁定棱9g实现内针的锁定；手动按下外针上弦按钮5b，使得外针座4b的外针座锁钩4b1挂在外针锁定棱9h实现外针的锁定。上弦操作完成后，内针和外针分别处于待激发状态。
根据穿刺需求调节调档组件，即推动把手11，使调档块10移动，并调节至所需挡位(挡位只能在内针和外针均处于上弦状态下调节)。
在超声设备辅助下，将内针1a和外针1b对准患者目标位置，按下触发按钮7a，触发按钮7a推动内针座锁钩4a1脱离锁定块9f上的内针锁定棱9g，使得内针座4a被触发，在内针座弹簧2a作用下弹出，直至内针座4a撞击在调档块10上而停下，此过程中，内针1a随着内针座4a被同步推出和停下，完成内针的一个穿刺过程。当调档块10处于第一挡时，内针座4a触发后在运动到第一阻挡面10a前先撞击在连动杆8的触发接收块8b上，通过连动杆8带动连动杆8上的触发斜面8c1撞击外针座锁钩4b1，使得外针座锁钩4b1向下运动而从外针锁定棱9h上脱钩，使得外针座4b被触发，在外针座弹簧2b作用下弹出，直至外针座4b撞击在调档块10上而停下，此过程中，外针1b随着外针座4b被同步推出和停下，完成外针的一个穿刺过程。当调档块10处于第二挡时，内针座4a触发后的行程变短，无法触及接收块8b，但是，垫块12跟随调档块10移动后刚好穿过避让槽8d挡在接收块8b之前，内针座4a能够先撞击在垫块12上，再通过垫块12将动力传递至接收块8b，以完成外针1b的触发。穿刺时， 通过内针1a和外针1b端部的剪切，在目标部位取下一段组织，该段组织存储在内针1a端部的存储槽1a1内。
再次按下外针上弦按钮5b，使得外针座4b的外针座锁钩4b1挂在外针锁定棱9h实现外针的锁定。此时，内针1a端部的存储槽1a1露出，可以从存储槽1a1内取出组织。然后，再次释放外针1b，再次通过内针1a和外针1b端部的剪切。
重复以上步骤多次，直至获取足够的活体样本。
根据本发明提供的实施方式，利用调档结构上的阻挡面阻挡内针组件和外针组件，可使内针组件和外针组件在限定行程内停止移动，其中，调档块上设置多组调档结构，通过切换不同的调档结构，可使内针组件和外针组件切换为不同的行程距离，进而可切换内针和外针的穿刺深度，达到穿刺针调档的目的。该调档组件具有结构简单，调控方便等优点，可降低穿刺针的设计及生产成本。
上述具体实施方式，并不构成对本发明保护范围的限制。本领域技术人员应该明白的是，取决于设计要求和其他因素，可以发生各种各样的修改、组合、子组合和替代。任何在本发明的精神和原则之内所作的修改、等同替换和改进等，均应包含在本发明保护范围之内。

Claims (10)

  1. 一种全自动穿刺针联动激发方法，所述全自动穿刺针包括内针座(4a)、外针座(4b)和联动杆(8)，其特征在于，所述方法包括如下步骤：
    内针座(4a)沿射针方向移动，并抵接联动杆(8)的前端，使联动杆(8)沿射针方向移动，联动杆(8)的末端驱动外针座(4b)移动，从而实现内针座(4a)和外针座(4b)的间隔联动激发；
    或者，
    内针座(4a)沿射针方向移动，并抵接联动杆(8)上的垫块(12)，使联动杆(8)沿射针方向移动，联动杆(8)的末端驱动外针座(4b)移动，从而实现内针座(4a)和外针座(4b)的间隔联动激发。
  2. 根据权利要求1所述的全自动穿刺针联动激发方法，其特征在于，所述全自动穿刺针还包括调档块(10)，调档块(10)设置在内针座(4a)和外针座(4b)的射针行程上，调档块(10)上包括多组沿射针方向具有不同高度的阻挡面(10a，10b)，其中，同组调档结构的两个阻挡面(10a，10b)平齐；
    阻挡面(10a，10b)用于阻挡内针座(4a)和外针座(4b)，内针座(4a)和外针座(4b)的间隔联动激发前，通过切换不同组的阻挡面(10a，10b)来调节内针座(4a)和外针座(4b)在射针方向的移动行程，从而达到内外针调档操作。
  3. 根据权利要求1或2所述的全自动穿刺针联动激发方法，其特征在于，联动杆(8)上设有用于连接垫块(12)的避让槽(8d)，垫块(12)与调档块(10)连接；
    通过切换不同组的阻挡面(10a，10b)来调节内针座(4a)和外针座(4b)在射针方向的移动行程的步骤还包括：调档块(10)切换至指定阻挡面(10a，10b)时，垫块(12)插入避让槽(8d)。
  4. 一种全自动穿刺针联动激发装置，其特征在于，包括内针座(4a)、外针座(4b)、联动杆(8)和垫块(12)；
    联动杆(8)上设有触发接收块(8b)和触发联动块(8c)；
    触发接收块(8b)位于内针座(4a)的射针行程上用于与内针座(4a)的第一端抵接，触发联动块(8c)与外针座(4b)的第二端贴合；
    垫块(12)可拆卸地设于触发接收块(8b)第二端，用于缩短触发接收块(8b)与内针座(4a)的间距；
    联动激发时，内针座(4a)抵接在触发接收块(8b)或垫块(12)上并带动联动杆(8)同步移动，从而使触发联动块(8c)共同移动，触发联动块(8c)推动外针座(4b)触发，实现内针座(4a)和外针座(4b)的联动激发。
  5. 根据权利要求4所述的全自动穿刺针联动激发装置，其特征在于，还包括调档块(10)；
    调档块(10)的第一侧的端部设有至少一组阻挡面(10a，10b)；
    内针座(4a)、外针座(4b)和联动杆(8)位于调档块(10)的设有阻挡面(10a，10b)的一侧，并且阻挡面(10a，10b)位于内针座(4a)和外针座(4b)的射针行程上，用于阻挡内针座(4a)和外针座(4b)移动。
  6. 根据权利要求5所述的全自动穿刺针联动激发装置，其特征在于，调档块(10)的第一侧面包括两组垂直于射针方向并列设置的调档结构；每组调档结构包括垂直于射针方向并且在该方向上间隔设置的两个阻挡面(10a，10b)，分别用于阻挡内针座(4a)和外针座(4b)；同组调档结构的两个阻挡面(10a，10b)平齐，不同组调档结构的阻挡面沿射针方向具有高度差；
    内针座(4a)和外针座(4b)的移动方向垂直阻挡面(10a，10b)，在移动时能够切换不同组的阻挡面(10a，10b)来调节内针座(4a)和外针座(4b)的移动行程，从而达到内外针调档作用。
  7. 根据权利要求6所述的全自动穿刺针联动激发装置，其特征在于，同组的两个阻挡面(10a，10b)之间设置有另一组的一个阻挡面(10a，10b)，从而使同组的两个阻挡面(10a，10b)间隔设置。
  8. 根据权利要求5至8中任一项所述的全自动穿刺针联动激发装置，其特征在于，垫块(12)位于调档块(10)的第一侧，并且垫块(12)与调档块(10)的端部连接；
    联动杆(8)还包括用于连接垫块的避让槽(8d)，避让槽(8d)位于触发接收块(8b)和触发联动块(8c)之间，并且避让槽(8d)的深度小于垫块(12)的厚度；
    调档块(10)切换至指定阻挡面(10a，10b)时，垫块(12)插接于避让槽(8d)内，联动激发时，内针座(4a)抵接在垫块(12)上并带动联动杆(8)向阻挡面(10a，10b)同步移动。
  9. 根据权利要求8所述的全自动穿刺针联动激发装置，其特征在于，联动杆(8)呈长方体形，触发接收块(8b)和避让槽(8d)位于联动杆(8)第一端第一侧面，触发联动块(8c)位于联动杆(8)第二端第二侧面，所述第一侧面与所述第二侧面为相邻面。
  10. 一种全自动穿刺针，其特征在于，包括如权利要求4至9中任一项所述的全自动穿刺针联动激发装置。
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US20060195044A1 (en) * 2002-11-20 2006-08-31 David Cooke Method of using a medical instrument
WO2011034046A1 (ja) * 2009-09-15 2011-03-24 株式会社タスク 生検装置
CN112656457A (zh) * 2021-01-04 2021-04-16 苏州市立普医疗科技有限公司 一种活检针激发装置及全自动活检装置

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