CN113171162B - Full-automatic puncture needle linkage excitation device and method and full-automatic puncture needle - Google Patents
Full-automatic puncture needle linkage excitation device and method and full-automatic puncture needle Download PDFInfo
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- CN113171162B CN113171162B CN202110477701.4A CN202110477701A CN113171162B CN 113171162 B CN113171162 B CN 113171162B CN 202110477701 A CN202110477701 A CN 202110477701A CN 113171162 B CN113171162 B CN 113171162B
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- 230000005284 excitation Effects 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000000903 blocking effect Effects 0.000 claims description 51
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000004904 shortening Methods 0.000 claims description 2
- 238000010304 firing Methods 0.000 claims 2
- 238000004804 winding Methods 0.000 description 14
- 230000001960 triggered effect Effects 0.000 description 11
- 238000001574 biopsy Methods 0.000 description 8
- 238000003825 pressing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
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- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 210000003811 finger Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 230000000149 penetrating effect Effects 0.000 description 2
- 206010011732 Cyst Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 208000031513 cyst Diseases 0.000 description 1
- 230000002380 cytological effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
-
- 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
-
- 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
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
-
- 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
-
- 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
- A61B2010/0225—Instruments for taking cell samples or for biopsy for taking multiple samples
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
- A61B2017/3413—Needle locating or guiding means guided by ultrasound
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B2017/3454—Details of tips
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Medical Informatics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Pathology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention relates to the technical field of puncture equipment, in particular to a full-automatic puncture needle linkage excitation device and method and a full-automatic puncture needle, wherein the method comprises the following steps: the inner needle base moves along the needle shooting direction and abuts against the front end of the linkage rod, so that the linkage rod moves along the needle shooting direction, and the tail end of the linkage rod drives the outer needle base to move, so that the inner needle base and the outer needle base are excited in an interval linkage manner; or the inner needle seat moves along the needle shooting direction and abuts against the cushion block on the linkage rod, so that the linkage rod moves along the needle shooting direction, and the tail end of the linkage rod drives the outer needle seat to move, thereby realizing the interval linkage excitation of the inner needle seat and the outer needle seat. According to the technical scheme provided by the invention, the cushion block extends the distance from the front end of the linkage rod to the inner needle seat, has the length compensation function, and can ensure that the inner needle seat can excite the linkage rod under the gear shifting condition.
Description
Technical Field
The invention relates to the technical field of puncture equipment, in particular to a full-automatic puncture needle linkage excitation device and method and a full-automatic puncture needle.
Background
The method is characterized in that a puncture needle is guided to a target position of a human body under ultrasonic guidance to realize cytological biopsy, histological biopsy, cyst suction, treatment and the like, and is an important disease monitoring and treating means at present. The puncture needle is an important tool in the ultrasonic guided surgery, the structure of an inner needle and an outer needle is generally adopted as the puncture needle for biopsy at present, when the puncture needle is used, the inner needle is triggered to puncture a target area, then the outer needle is triggered to puncture along with the inner needle, a part of tissue of the target area is cut off through shearing of the needle head of the inner needle and the needle head of the outer needle, and the cut tissue is placed in a containing cavity at the end part of the needle head of the inner needle and is taken out along with the pulling out of the puncture needle for biopsy.
However, since the size and shape of the target area to be obtained are different, the physician usually selects biopsy needles with different ranges (displacement of the needle after being excited) according to the specific condition of the target area to meet the requirement of biopsy. In order to meet the requirement of the puncture needle for multiple ranges, the puncture needle with adjustable range appears in the market at present, and the adjustment of the ranges of the inner needle and the outer needle is realized through complex transmission structures such as an adjusting knob and the like. Although the range adjustment is realized, the complicated structure of the adjustable range causes great increase of production cost, so that the operation cost is increased, and the complicated structure influences the stability of the biopsy needle, so that the medical accident of jamming or even more serious can occur.
Disclosure of Invention
The invention provides a full-automatic puncture needle linkage excitation device and method and a full-automatic puncture needle.
In one aspect of the invention, a full-automatic puncture needle linkage excitation method is provided, the full-automatic puncture needle comprises an inner needle base, an outer needle base and a linkage rod, and the method comprises the following steps: the inner needle base moves along the needle injection direction and abuts against the front end of the linkage rod, so that the linkage rod moves along the needle injection direction, and the tail end of the linkage rod drives the outer needle base to move, so that the spaced linkage excitation of the inner needle base and the outer needle base is realized; or the inner needle seat moves along the needle shooting direction and abuts against the cushion block on the linkage rod, so that the linkage rod moves along the needle shooting direction, and the tail end of the linkage rod drives the outer needle seat to move, thereby realizing the interval linkage excitation of the inner needle seat and the outer needle seat.
Optionally, the full-automatic puncture needle further comprises a gear shifting block, the gear shifting block is arranged on the injection stroke of the inner needle base and the outer needle base, the gear shifting block comprises a plurality of groups of blocking surfaces with different heights along the injection direction, and two blocking surfaces of the gear shifting structures in the same group are flush; the blocking surfaces are used for blocking the inner needle base and the outer needle base, and before the interval linkage excitation of the inner needle base and the outer needle base, the moving stroke of the inner needle base and the moving stroke of the outer needle base in the needle shooting direction are adjusted by switching the blocking surfaces of different groups, so that the gear shifting operation of the inner needle and the outer needle is achieved.
Optionally, an avoidance groove for connecting a cushion block is arranged on the linkage rod, and the cushion block is connected with the gear shifting block; the step of adjusting the moving stroke of the inner needle seat and the outer needle seat in the needle shooting direction by switching different groups of blocking surfaces further comprises the following steps: when the gear shifting block is switched to the designated blocking surface, the cushion block is inserted into the avoiding groove.
The invention also provides a full-automatic puncture needle linkage excitation device, which comprises an inner needle seat, an outer needle seat, a linkage rod and a cushion block, wherein the inner needle seat is provided with a first end and a second end; the linkage rod is provided with a trigger receiving block and a trigger linkage block; the trigger receiving block is positioned on the injection stroke of the inner needle base and is used for abutting against the first end of the inner needle base, and the trigger linkage block is attached to the second end of the outer needle base; the cushion block is detachably arranged at the second end of the trigger receiving block and is used for shortening the distance between the trigger receiving block and the inner needle seat; when linkage excitation, the inner needle seat is abutted against the trigger receiving block or the cushion block and drives the linkage rod to move synchronously, so that the trigger linkage block moves together, the trigger linkage block pushes the outer needle seat to trigger, and linkage excitation of the inner needle seat and the outer needle seat is realized.
Optionally, a shift block is also included; the end part of the first side of the gear shifting block is provided with at least one group of blocking surfaces; the inner needle base, the outer needle base and the linkage rod are located on one side, provided with the blocking face, of the gear shifting block, and the blocking face is located on the needle injecting stroke of the inner needle base and the needle injecting stroke of the outer needle base and used for blocking the inner needle base and the outer needle base from moving.
Optionally, the first side surface of the gear shifting block comprises two groups of gear shifting structures which are arranged in parallel and perpendicular to the shooting needle direction; each group of gear shifting structures comprises two blocking surfaces which are perpendicular to the needle shooting direction and are arranged at intervals in the direction and are respectively used for blocking the inner needle base and the outer needle base; the two blocking surfaces of the same group of gear shifting structures are parallel and level, and the blocking surfaces of different groups of gear shifting structures have height difference along the needle shooting direction; the moving directions of the inner needle seat and the outer needle seat are perpendicular to the blocking surfaces, and the blocking surfaces of different groups can be switched to adjust the moving stroke of the inner needle seat and the moving stroke of the outer needle seat when the inner needle seat and the outer needle seat move, so that the shifting effect of the inner needle and the outer needle is achieved.
Optionally, a blocking surface of another group is arranged between two blocking surfaces of the same group, so that the two blocking surfaces of the same group are arranged at intervals.
Optionally, the cushion block is located on a first side of the shift block, and the cushion block is connected with an end of the shift block; the linkage rod further comprises an avoidance groove used for being connected with the cushion block, the avoidance groove is located between the trigger receiving block and the trigger linkage block, and the depth of the avoidance groove is smaller than the thickness of the cushion block; when the gear shifting block is switched to the designated blocking surface, the cushion block is inserted into the avoiding groove, and when linkage excitation is performed, the inner needle seat is abutted against the cushion block and drives the linkage rod to synchronously move towards the blocking surface.
Optionally, the linkage rod is cuboid, the triggering receiving block and the avoiding groove are located on a first side face of a first end of the linkage rod, the triggering linkage block is located on a second side face of a second end of the linkage rod, and the first side face and the second side face are adjacent faces.
In another aspect of the invention, a full-automatic puncture needle is also provided, which comprises the full-automatic puncture needle linkage excitation device.
According to the technical scheme provided by the invention, when the linkage rod can be adapted to the injection strokes of different inner needle bases and outer needle bases, when the injection stroke is longer, the inner needle base is abutted against the front end of the linkage rod, and when the injection stroke is shorter, the inner needle base is abutted against the cushion block, and the linkage rod can be driven by the two modes, so that the interval linkage excitation of the inner needle base and the outer needle base is realized. The cushion block extends the distance from the front end of the linkage rod to the inner needle seat, has the length compensation function, and can ensure that the inner needle seat can excite the linkage rod under the gear shifting condition.
Drawings
For purposes of illustration and not limitation, the present invention will now be described in accordance with its preferred embodiments, particularly with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural view of a fully automatic lancet provided in an embodiment of the present invention;
FIG. 2 is a front view of a fully automatic lancet provided in accordance with an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a fully automatic lancet provided in accordance with an embodiment of the present invention;
fig. 4 is an exploded view of a fully automatic lancet provided in accordance with an embodiment of the present invention;
FIG. 5 is a schematic view showing the structure of the inner housing of the fully automatic puncture needle according to the embodiment of the present invention;
FIG. 6 is a front view of the front end of the inner housing of the fully automatic puncture needle according to the embodiment of the present invention;
FIG. 7 is a schematic structural view of a backstop in the fully automatic lancet provided in the embodiment of the present invention;
FIG. 8 is a top view of the inner housing of the fully automatic lancet provided in accordance with an embodiment of the present invention;
FIG. 9 isbase:Sub>A cross-sectional view taken at "A-A" in FIG. 8;
fig. 10 is a schematic structural diagram of a linkage rod in the fully automatic puncture needle according to the embodiment of the present invention;
FIG. 11 is a schematic view showing the structure of an adjustment block in the fully automatic puncture needle according to the embodiment of the present invention;
fig. 12 is a schematic structural view of another view angle of the shift block in the fully automatic puncture needle according to the embodiment of the present invention;
FIG. 13 is a schematic structural view of the winding up button of the fully automatic puncture needle according to the embodiment of the present invention;
fig. 14 is a schematic structural view of an outer needle holder in the fully automatic puncture needle provided in the embodiment of the present invention;
FIG. 15 is a front elevational view of a fully automatic lancet provided in accordance with an embodiment of the present invention without a housing;
FIG. 16 is a cross-sectional view of a fully automatic lancet without a sheath in accordance with an embodiment of the present invention;
FIG. 17 is a cross-sectional view of a fully automatic lancet provided in accordance with an embodiment of the present invention without a housing;
FIG. 18 is a cross-sectional view of a fully automatic lancet in the first gear state with no sheath in accordance with an embodiment of the present invention;
fig. 19 is a sectional view showing a second stop state in the case where the puncture needle is not covered with the sheath in the fully automatic puncture needle according to the embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present application. For the sake of brevity, the same or similar reference numerals are used for the same or similar apparatus/method steps in the description of the various embodiments of the present application.
In addition, the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
FIG. 1 is a schematic structural view of a fully automatic lancet provided in an embodiment of the present invention; FIG. 2 is a front view of a fully automatic lancet provided in accordance with an embodiment of the present invention; FIG. 3 is a cross-sectional view of a fully automatic lancet provided in accordance with an embodiment of the present invention; fig. 4 is an exploded view of a fully automatic puncture needle according to an embodiment of the present invention. As shown in fig. 1 to 4, the fully automatic puncture needle comprises an outer housing, an inner needle assembly, an outer needle assembly, a linkage assembly for linkage triggering the inner needle assembly and the outer needle assembly, and a shift assembly for adjusting the range gear of the inner needle assembly and the outer needle assembly.
The components of the fully automatic puncture needle will be described in detail with reference to the accompanying drawings, wherein, when describing the positions of the components, the needle tip is taken as the front, and the side of the outer shell with the trigger button is taken as the upper side.
FIG. 5 is a schematic view showing the structure of the inner housing of the fully automatic puncture needle according to the embodiment of the present invention;
FIG. 6 is a front view of the front end of the inner housing of the fully automatic puncture needle according to the embodiment of the present invention; FIG. 7 is a schematic structural view of a backstop in the fully automatic lancet provided in the embodiment of the present invention; FIG. 8 is a top view of the inner housing of the fully automatic lancet provided in accordance with an embodiment of the present invention; fig. 9 isbase:Sub>A cross-sectional view taken at "base:Sub>A-base:Sub>A" in fig. 8. As shown in fig. 1 to 9, the inner needle assembly includes an inner needle 1a, an inner hub 4a to which the inner needle 1a is fixed, an inner hub guide rod 3a, and an inner hub spring 2a. The inner hub 4a is provided with an inner hub locking hook 4a1 which can be locked or unlocked with a locking block 9f of the inner housing 9, and a guide hole (not shown) for the inner hub guide rod 3a to pass through, and the front end of the inner hub 4a is fixedly provided with an inner needle button connecting seat 4a3 for connecting an inner needle upper chord button 5 a. The inner needle seat spring 2a is arranged on the inner needle seat guide rod 3a in a penetrating way, and two ends of the inner needle seat spring are respectively abutted against the inner needle seat 4a and the rear stop block 9 e.
Fig. 14 is a schematic structural view of an outer needle holder in the fully automatic puncture needle provided by the embodiment of the invention. As shown in fig. 1 to 9, and 14, the outer needle assembly includes an outer needle 1b, an outer hub 4b to which the outer needle 1b is fixed, an outer hub guide rod 3b, and an outer hub spring 2b. The outer needle base 4b is provided with an outer needle base locking hook 4b1 which can be locked or unlocked with a locking block 9f of the inner shell 9, and a guide hole (not shown) for the outer needle base guide rod 3b to pass through, and the front end of the outer needle base 4b is fixedly provided with an outer needle button connecting seat 4b3 for connecting an outer needle upper chord button 5b. The outer needle base spring 2b is arranged on the outer needle base guide rod 3b in a penetrating mode, and two ends of the outer needle base spring are respectively abutted against the outer needle base 4b and the rear stop block 9 e.
Fig. 10 is a schematic structural diagram of a linkage rod in the fully automatic puncture needle according to the embodiment of the present invention. As shown in fig. 10, the linkage assembly includes a linkage rod 8, a link guide block 8a, a trigger receiving block 8b, a trigger linkage block 8c, and an escape groove 8d. Wherein, the connecting rod guide block 8a is arranged in the connecting rod guide groove on the outer shell in a sliding way. The trigger receiving block 8b includes an abutment surface 8b1 for receiving the impact of the inner needle trigger block on the inner needle mount 4a and causing the linked assembly to be moved conjointly by the inner needle mount 4 a. When the linkage assembly is driven by the inner needle seat 4a, the trigger inclined surface 8c1 of the trigger linkage block 8c strikes the outer needle seat lock hook 4b1 and enables the outer needle seat lock hook to fall off and unlock from the locking block 9f of the inner shell 9, so that the outer needle seat 4b is triggered, and the outer needle 1b is ejected out under the action of the outer needle seat spring 2b. Thereby realizing that the outer needle 1b and the outer needle seat 4b are ejected along with the ejection after the inner needle 1a and the inner needle seat 4a are ejected. In the process of ejecting the inner needle 1a and the outer needle 1b one after another, a piece of tissue is removed from a target site by cutting the ends of the inner needle 1a and the outer needle 1b, and stored in the storing groove 1a1 at the end of the inner needle 1a (the outer needle 1b can be removed after being pushed down). The avoidance groove 8d in the linkage assembly is used for avoiding the cushion block 12 in the gear shifting assembly, and the specific avoidance mode refers to the following description.
FIG. 11 is a schematic view showing the structure of a shift block in the fully automatic puncture needle according to the embodiment of the present invention;
fig. 12 is a schematic structural view of another view angle of the shift block in the fully automatic puncture needle according to the embodiment of the present invention. As shown in fig. 11 and 12, the gearshift assembly includes a gearshift block 10, a handle 11, and a pad 12 that slide left and right within the inner housing 9.
In the embodiment of the present invention, two blocking surfaces, i.e., a first blocking surface 10a and a second blocking surface 10b, are taken as an example. FIG. 15 is a front elevational view of a fully automatic lancet provided in accordance with an embodiment of the present invention without a housing; FIG. 16 is a cross-sectional view of a fully automatic lancet provided in accordance with an embodiment of the present invention without a housing; FIG. 17 is a cross-sectional view of a fully automatic lancet without a sheath in accordance with an embodiment of the present invention; FIG. 18 is a cross-sectional view of a fully automatic lancet with no sheath in the first position in accordance with an embodiment of the present invention; fig. 19 is a sectional view showing a second stop state in the case where the puncture needle is not covered with the sheath in the fully automatic puncture needle according to the embodiment of the present invention. As shown in fig. 15 to 19, the shift block 10 has two first blocking surfaces 10a and two second blocking surfaces 10b, and according to the left and right sliding of the shift block 10, the inner needle holder 4a and the outer needle holder 4b can selectively collide with the first blocking surfaces 10a or the second blocking surfaces 10b after being triggered (the abutting ends of the inner needle holder 4a and the outer needle holder 4b collide with the first blocking surfaces 10a or the second blocking surfaces 10 b). In the present embodiment, the distance traveled by the inner needle holder 4a and the outer needle holder 4b when they impinge on the first blocking surface 10a is relatively large, i.e. the throw of the inner needle 1a and the outer needle 1b is relatively long, and the distance traveled by the inner needle holder 4a and the outer needle holder 4b when they impinge on the second blocking surface 10b is relatively small, i.e. the throw of the inner needle 1a and the outer needle 1b is relatively short.
With continued reference to fig. 15-19, and 5-9, the handles 11 are disposed on the left and right sides of the shift block 10, as shown, and extend beyond the inner and outer housings for manually adjusting the position of the shift block 10 to effect adjustment of the gears. The handle 11 extends out of the housing part as a round bar, and the handle 11 on each side has two grooves 11a, and the grooves 11a are used for locking after gear shifting. The gear shifting positioning block 9j on the inner shell 9 corresponds to the groove 11a, the gear shifting positioning block 9j on the inner shell 9 clamps the round rod of the handle 11 when the handle 11 moves, and when the gear shifting positioning block 9j slides into the groove 11a from the round rod, the gear shifting positioning block impacts the groove 11a to generate impact sound to prompt that gear shifting is completed.
As shown in fig. 11 and 12, the shift block 10 is further provided with a cushion block 12, and is fixedly connected with the shift block 10 through an elastic rod, when the shift operation is performed, the cushion block 12 slides left and right along with the shift block 10, and when the shift block 10 is at the second gear, the cushion block 12 slides to between the trigger receiving block 8b of the linkage assembly and the inner needle holder 4 a. Because the moving distance between the inner needle seat 4a and the outer needle seat 4b is small when the second gear is in the second gear, the inner needle seat 4a cannot excite the linkage assembly after being triggered (the inner needle seat 4a is not in contact with the linkage assembly due to the fact that the moving distance is shortened), and then the outer needle seat 4b cannot be excited. In the embodiment of the invention, the cushion block 12 is used as compensation for the reduction of the moving distance of the inner needle seat 4a of the second stop, and after the cushion block 12 is arranged, the gear shifting block 10 can also successfully excite the outer needle seat 4b under the second stop. The thickness of the spacer 12 is determined by the distance between the first stop surface 10a and the second stop surface 10b.
As shown in fig. 5 to 9, the inner case 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 edge 9g, an outer needle locking edge 9h, a shift chute 9i, a shift positioning block 9j, an upper chord button slide rail 9k, a front locking buckle 9l, and a housing locking buckle 9m. The needle groove 9b is located at the middle of the upper surface of the base plate 9a for the inner needle 1a and the outer needle 1b to pass through. The side plates 9c are fixedly provided at both sides of the base plate 9a for protecting and supporting components of the inner case 9. The front block 9d is fixedly arranged at the front part of the two side plates 9c and is mainly used for forming an upper chord button slide rail 9k together with the base plate 9 a. In addition, it has a needle hole 9d1 connected to the needle groove 9b, a link guide groove 9d2 for guiding the link guide block 8a, and two fixing holes 9d3 for respectively engaging the inner needle holder guide bar 3a and the outer needle holder guide bar 3 b.
With continued reference to fig. 5 to 9, as shown in the figure, the rear block 9e is clamped in the clamping groove at the rear of the base plate 9a and the side plate 9c by the bottom and two side projections 9e1, and the rear block 9e has two spring grooves 9e2 for supporting the springs. In addition, the rear stop block 9e is provided with a supporting platform 9e3, one side of the trigger linkage block 8c, which is far 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 supporting platform 9e3 is used for supporting the rear end portion of the extension portion 8e, and as the connecting rod guide block 8a on the linkage rod 8 is shorter in length and is located at the front end portion, the supporting platform 9e3 used for supporting the rear end portion of the extension portion 8e is arranged at the rear end portion. The locking block 9f is fixed and transversely arranged between the two side plates 9c, an inner needle locking edge 9g for hanging the locking hook on the inner needle seat 4a and an outer needle locking edge 9h for hanging the locking hook on the outer needle seat 4b are arranged on the locking block, a second guide groove 9f1 for guiding the linkage rod 8 is arranged on the lower surface of the middle part of the locking block 9f, and the second guide groove 9f1 limits the left direction, the right direction and the upper direction of the linkage rod 8. The locking block 9f is further provided with a guide surface 9f2 horizontally extending towards the rear part, and the guide surface 9f2 is used for abutting against the trigger inclined surface 8c1 on the linkage rod 8 to play a guiding role, so that the trigger inclined surface 8c1 can be prevented from touching other structures and being clamped.
The shift positioning block 9j is used for clamping the handle 11 of the shift assembly, and when the shift positioning block 9j slides into the groove 11a from the round rod of the handle 11 (refer to fig. 11 and 12), the shift positioning block impacts on the groove 11a to generate impact sound, so that the completion of the shift is prompted. The gear shifting positioning block 9j is only arranged in the gear shifting sliding groove 9i on one side, so that the gear shifting positioning block impacts different parts of the handle 11 when adjusted to different gears, different sounds are emitted, and the distinguishing degree of the gears is increased. The front locking buckle 9l is provided with two projections on the lower surface of the front part of the base plate 9a for locking the front fixing sleeve 6 clamped on the front part of the inner housing 9 to prevent it from falling off. The shell locking buckle 9m is arranged on the side plate 9c and used for locking the rear fixing sleeve 7 sleeved outside the inner shell 9, so that the rear fixing sleeve 7 is convenient to disassemble and assemble, and the shell locking buckle 9m comprises a boss protruding towards the outside and an elastic connecting rod capable of increasing the elastic deformation capacity of the boss.
Fig. 13 is a schematic structural diagram of a winding button in the fully automatic puncture needle according to the embodiment of the invention. As shown in fig. 1 to 4, 13 and 14, the outer housing comprises a front hub 6, a rear hub 7, an inner needle winding button 5a and an outer needle winding button 5b. The front fixing sleeve 6 is provided with a clamping groove clamped with the base plate 9a, and is mutually locked with the base plate 9a through a front locking buckle 9 l. The front fixing sleeve 6 is provided with 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 sleeved outside the inner shell 9 from the rear part of the inner shell 9 and is used for protecting the inner shell 9 and inner components thereof. Two sides of the rear fixing sleeve 7 are provided with locking holes matched with the shell locking buckles 9m, the rear fixing sleeve 7 is also provided with a trigger button 7a, when the locking holes are matched and locked with the shell locking buckles 9m, the trigger button 7a is positioned above the inner needle seat locking hooks 4a1 of the inner needle seat 4a after winding, and after the trigger button 7a is pressed down, the trigger button 7a pushes the inner needle seat locking hooks 4a1 to be separated from the inner needle locking edges 9g on the locking blocks 9f, so that the inner needle seat 4a is triggered and popped out under the action of the inner needle seat spring 2a.
The rear fixing sleeve 7 is provided with a through hole in the area corresponding to the handle 11 on the gear shifting block 10, the diameter of the through hole is larger than that of the end part of the handle 11, and the handle 11 can be completely immersed in the through hole on the rear fixing sleeve 7 when clinging to the inner shell 9. In addition, an operating hand position 111 is provided at an end of the handle 11, and the diameter of the operating hand position is larger than that of the through hole, and if a circular plate structure is adopted, the operating hand position can be further used for limiting. In the embodiment of the invention, the gear block 10 comprises two gears during adjustment, two handles 11 are arranged on the gear block 10, when the gear block 10 is positioned at the first gear during gear adjustment operation, the operating hand at one side is attached to the outer wall of the rear fixing sleeve 7, and when the gear block is positioned at the second gear, the operating hand at the other side is attached to the outer wall of the rear fixing sleeve 7.
With continued reference to fig. 1-4, 13 and 14, the rear harness 7 is provided with a half-turn raised rib 7b at the periphery of the trigger button 7a, the height of the rib 7b being slightly higher than the height of the harness 7 after the trigger button 7a protrudes, and the rib 7b being located at the front of the trigger button 7a, as shown. When the hand grips the outer shell again, the fingers (especially the thumb) are easy to slide from front to back (when a doctor operates the puncture needle, different hand-holding positions may need to be switched, the fingers can slide very frequently), and the trigger button 7a is very easy to touch to cause false triggering, so that the rib part 7b arranged on the trigger button 7a can effectively prevent the false triggering, and the safety performance of the puncture needle in use is ensured.
The inner needle winding-up button 5a is provided with an inner needle pressing surface 5a1, an inner needle button connecting post 5a2 clamped with the inner needle button connecting seat 4a3 and an inner needle button guiding post 5a3. When the inner needle button connecting seat 4a3 is clamped with the inner needle button connecting post 5a2, a complete column is formed, and the inner needle button connecting seat can slide in the upper string button sliding rail 9k. The inner needle button guide post 5a3 is slidably disposed in the gap between the guide ring 6a and the front stopper 9d to maintain stability. The inner needle button connecting post 5a2 and the inner needle button guiding post 5a3 are respectively positioned at the upper end and the lower end of the inner needle winding button 5a, so that the stability when the inner needle winding button 5a is pressed is improved. The outer needle winding button 5b comprises an outer needle pressing surface 5b1, an outer needle button connecting column 5b2 and an outer needle button guiding column 5b3, and the outer needle winding button 5b and the inner needle winding button 5a are symmetrical with each other about the axis, so that the details are omitted. Wherein, still be provided with on interior needle pressing surface 5a1 and the outer needle pressing surface 5b1 and press the screw thread or instruct the label, perhaps have the pressure screw thread of instructing effect, instruct label can mark (1) and (2) etc. play operation order and remind the effect, press the screw thread its increase friction's effect.
The full-automatic puncture needle provided by the embodiment of the invention has the following puncture operations:
manually pressing the inner needle upper chord button 5a to enable the inner needle seat locking hook 4a1 of the inner needle seat 4a to be hung on the inner needle locking ridge 9g to realize the locking of the inner needle; the outer needle upper chord button 5b is manually pressed down, so that the outer needle seat locking hook 4b1 of the outer needle seat 4b is hung on the outer needle locking ridge 9h to realize the locking of the outer needle. After the winding operation is finished, the inner needle and the outer needle are respectively in a state to be excited.
The gear shifting assembly is adjusted according to the puncture requirement, namely the handle 11 is pushed, the gear shifting block 10 is moved and adjusted to the required gear (the gear can only be adjusted when the inner needle and the outer needle are both in the winding state).
Under the assistance of ultrasonic equipment, aligning the inner needle 1a and the outer needle 1b to the target position of a patient, pressing the trigger button 7a, pushing the inner needle seat locking hook 4a1 to be separated from the inner needle locking edge 9g on the locking block 9f by the trigger button 7a, so that the inner needle seat 4a is triggered and popped out under the action of the inner needle seat spring 2a until the inner needle seat 4a is collided on the gear shifting block 10 to stop, and in the process, the inner needle 1a is synchronously pushed out and stopped along with the inner needle seat 4a, and a puncture process of the inner needle is completed. When the gear shifting block 10 is in the first gear, the inner needle seat 4a is triggered and then collides with the trigger receiving block 8b of the linkage rod 8 before moving to the first blocking surface 10a, the linkage rod 8 drives the trigger inclined surface 8c1 on the linkage rod 8 to collide with the outer needle seat locking hook 4b1, so that the outer needle seat locking hook 4b1 moves downwards and is unhooked from the outer needle locking ridge 9h, the outer needle seat 4b is triggered and is ejected under the action of the outer needle seat spring 2b until the outer needle seat 4b collides with the gear shifting block 10 and stops, and in the process, the outer needle 1b is synchronously ejected and stopped along with the outer needle seat 4b, and a puncturing process of the outer needle is completed. When the gear shifting block 10 is in the second gear, the stroke of the inner needle seat 4a after being triggered is shortened, and the inner needle seat cannot touch the receiving block 8b, however, the cushion block 12 just passes through the avoiding groove 8d after moving along with the gear shifting block 10 to be blocked before the receiving block 8b, the inner needle seat 4a can firstly impact on the cushion block 12, and then power is transmitted to the receiving block 8b through the cushion block 12, so that the outer needle 1b is triggered. At the time of puncture, a piece of tissue stored in the storing groove 1a1 at the end of the inner needle 1a is removed at a target site by shearing the ends of the inner needle 1a and the outer needle 1 b.
The outer needle upper chord button 5b is pressed again, so that the outer needle seat locking hook 4b1 of the outer needle seat 4b is hung on the outer needle locking ridge 9h to realize the locking of the outer needle. At this time, the storing groove 1a1 at the end of the inner needle 1a is exposed, and the tissue can be taken out from the storing groove 1a 1. Then, the outer needle 1b is released again, again by shearing of the ends of the inner needle 1a and the outer needle 1 b.
The above steps are repeated a number of times until a sufficient biopsy sample is obtained.
According to the embodiment provided by the invention, the inner needle assembly and the outer needle assembly can stop moving within a limited stroke by blocking the inner needle assembly and the outer needle assembly by the blocking surface on the gear shifting structure, wherein a plurality of sets of gear shifting structures are arranged on the gear shifting block, and the inner needle assembly and the outer needle assembly can be switched to different stroke distances by switching different gear shifting structures, so that the puncture depths of the inner needle and the outer needle can be switched, and the purpose of shifting the puncture needle is achieved. The gear shifting assembly has the advantages of simple structure, convenience in regulation and control and the like, and the design and production cost of the puncture needle can be reduced.
The above-described embodiments should not be construed as limiting the scope of the invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions can occur, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A full-automatic puncture needle linkage excitation method is provided, the full-automatic puncture needle comprises an inner needle base (4 a), an outer needle base (4 b) and a linkage rod (8), and the method is characterized by comprising the following steps:
the inner needle base (4 a) moves along the needle shooting direction and abuts against the front end of the linkage rod (8), so that the linkage rod (8) moves along the needle shooting direction, and the tail end of the linkage rod (8) drives the outer needle base (4 b) to move, thereby realizing the interval linkage excitation of the inner needle base (4 a) and the outer needle base (4 b);
or,
the inner needle base (4 a) moves along the needle shooting direction and abuts against a cushion block (12) on the linkage rod (8), so that the linkage rod (8) moves along the needle shooting direction, the tail end of the linkage rod (8) drives the outer needle base (4 b) to move, and therefore the spaced linkage excitation of the inner needle base (4 a) and the outer needle base (4 b) is achieved;
the full-automatic puncture needle further comprises a gear shifting block (10), and the gear shifting block (10) is arranged on the needle shooting stroke of the inner needle base (4 a) and the outer needle base (4 b);
the gear shifting block (10) comprises two blocking surfaces (10 a,10 b) which are arranged in parallel along the needle shooting direction, and the two blocking surfaces (10 a,10 b) are respectively used for blocking the inner needle seat (4 a) and the outer needle seat (4 b);
an avoiding groove (8 d) used for being connected with a cushion block (12) is formed in the linkage rod (8), the cushion block (12) is connected with a gear shifting block (10), and the cushion block (12) is located in the avoiding groove (8 d).
2. A fully automatic needle coordinated firing method according to claim 1, wherein the shift block (10) includes a plurality of sets of stop faces (10a, 10b) having different heights in the needle shooting direction, wherein the two stop faces (10a, 10b) of the same set of shift structure are flush;
the blocking surfaces (10a and 10b) are used for blocking the inner needle seat (4 a) and the outer needle seat (4 b), and before the interval linkage excitation of the inner needle seat (4 a) and the outer needle seat (4 b), the moving stroke of the inner needle seat (4 a) and the moving stroke of the outer needle seat (4 b) in the needle shooting direction are adjusted by switching different groups of blocking surfaces (10a and 10b), so that the inner needle and outer needle gear shifting operation is achieved.
3. A full-automatic puncture needle linkage excitation device is characterized by comprising an inner needle seat (4 a), an outer needle seat (4 b), a linkage rod (8) and a cushion block (12);
a trigger receiving block (8 b) and a trigger linkage block (8 c) are arranged on the linkage rod (8);
the trigger receiving block (8 b) is positioned on the injection stroke of the inner needle base (4 a) and is used for being abutted against the first end of the inner needle base (4 a), and the trigger linkage block (8 c) is attached to the second end of the outer needle base (4 b);
the cushion block (12) is detachably arranged at the second end of the trigger receiving block (8 b) and is used for shortening the distance between the trigger receiving block (8 b) and the inner needle seat (4 a);
when linkage excitation is carried out, the inner needle seat (4 a) is abutted against the trigger receiving block (8 b) or the cushion block (12) and drives the linkage rod (8) to move synchronously, so that the trigger linkage block (8 c) moves together, the trigger linkage block (8 c) pushes the outer needle seat (4 b) to trigger, and linkage excitation of the inner needle seat (4 a) and the outer needle seat (4 b) is realized;
two groups of stop surfaces (10a, 10b) are arranged at the end part of the first side of the gear shifting block (10);
the inner needle seat (4 a), the outer needle seat (4 b) and the linkage rod (8) are positioned on one side of the gear shifting block (10) provided with blocking surfaces (10a and 10b), and the blocking surfaces (10a and 10b) are positioned on the needle shooting stroke of the inner needle seat (4 a) and the outer needle seat (4 b) and used for blocking the inner needle seat (4 a) and the outer needle seat (4 b) from moving;
the cushion block (12) is positioned on the first side of the gear shifting block (10), and the cushion block (12) is connected with the end part of the gear shifting block (10);
the linkage rod (8) further comprises an avoiding groove (8 d) used for being connected with the cushion block, the avoiding groove (8 d) is located between the trigger receiving block (8 b) and the trigger linkage block (8 c), and the depth of the avoiding groove (8 d) is smaller than the thickness of the cushion block (12);
when the gear shifting block (10) is switched to the designated blocking surfaces (10a, 10b), the cushion block (12) is inserted into the avoiding groove (8 d), and when linkage excitation is carried out, the inner needle seat (4 a) abuts against the cushion block (12) and drives the linkage rod (8) to synchronously move towards the blocking surfaces (10a, 10b).
4. A fully automatic needle-piercing linkage actuating apparatus according to claim 3, wherein the first side of the shift block (10) includes two sets of shift structures arranged side-by-side perpendicular to the needle-firing direction; each group of gear shifting structures comprises two blocking surfaces (10a, 10b) which are perpendicular to the needle shooting direction and are arranged at intervals in the direction and are used for blocking the inner needle seat (4 a) and the outer needle seat (4 b) respectively; two blocking surfaces (10a and 10b) of the same gear shifting structure are flush, and the blocking surfaces of different gear shifting structures have height difference along the shooting needle direction;
the moving directions of the inner needle seat (4 a) and the outer needle seat (4 b) are vertical to the stop faces (10 a,10 b), and different groups of stop faces (10 a,10 b) can be switched to adjust the moving strokes of the inner needle seat (4 a) and the outer needle seat (4 b) during moving, so that the inner needle and the outer needle can be shifted.
5. A fully automatic lancet linkage actuating device according to claim 4, wherein one of the stop faces (10 a,10 b) of the other set is disposed between the two stop faces (10 a,10 b) of the same set, so that the two stop faces (10 a,10 b) of the same set are spaced apart.
6. The full-automatic puncture needle linkage excitation device according to claim 3, wherein the linkage rod (8) is cuboid, the trigger receiving block (8 b) and the avoiding groove (8 d) are positioned on a first side surface of a first end of the linkage rod (8), the trigger linkage block (8 c) is positioned on a second side surface of a second end of the linkage rod (8), and the first side surface and the second side surface are adjacent surfaces.
7. A fully automatic puncture needle comprising a fully automatic puncture needle linked excitation device according to any one of claims 3 to 6.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110477701.4A CN113171162B (en) | 2021-04-29 | 2021-04-29 | Full-automatic puncture needle linkage excitation device and method and full-automatic puncture needle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110477701.4A CN113171162B (en) | 2021-04-29 | 2021-04-29 | Full-automatic puncture needle linkage excitation device and method and full-automatic puncture needle |
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| CN113171162A CN113171162A (en) | 2021-07-27 |
| CN113171162B true CN113171162B (en) | 2022-12-09 |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7329227B2 (en) * | 2004-10-21 | 2008-02-12 | Inter-V-Manan | Forward-fired automatic tissue sampling apparatus with safety lock |
| CN201453304U (en) * | 2009-05-27 | 2010-05-12 | 安瑞医疗器械(杭州)有限公司 | Puncture biopsy sampling device |
| US20110004120A1 (en) * | 2009-05-28 | 2011-01-06 | Angiotech Pharmaceuticals Inc. | Biopsy device needle set |
| CN212438685U (en) * | 2020-03-27 | 2021-02-02 | 普昂(杭州)医疗科技有限公司 | Biopsy device and winding firing mechanism thereof |
| CN111345856A (en) * | 2020-04-13 | 2020-06-30 | 苏州市立普医疗科技有限公司 | Disposable biopsy needle |
| KR102232778B1 (en) * | 2020-11-26 | 2021-03-26 | 주식회사 그린메디칼서플라이 | Biopsy Device having Exterior Penetration Needle Locking Member |
| CN112656457A (en) * | 2021-01-04 | 2021-04-16 | 苏州市立普医疗科技有限公司 | Biopsy needle excitation device and full-automatic biopsy device |
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