CN113768550A - Biopsy needle device and single loading firing mechanism thereof - Google Patents
Biopsy needle device and single loading firing mechanism thereof Download PDFInfo
- Publication number
- CN113768550A CN113768550A CN202111095913.2A CN202111095913A CN113768550A CN 113768550 A CN113768550 A CN 113768550A CN 202111095913 A CN202111095913 A CN 202111095913A CN 113768550 A CN113768550 A CN 113768550A
- Authority
- CN
- China
- Prior art keywords
- firing
- accessory
- seat
- loading
- plate
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
-
- 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
- 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
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
- A61B2017/3405—Needle locating or guiding means using mechanical guide means
- A61B2017/3409—Needle locating or guiding means using mechanical guide means including needle or instrument drives
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Pathology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Toys (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to a single loading firing mechanism of a biopsy needle device, which comprises a first fitting, a second fitting and a third fitting which are respectively fixed corresponding to the rear ends of a needle core, a needle sleeve and a steel sheet, wherein the second fitting is connected to the first fitting in a sliding manner, the third fitting is connected to the second fitting in a sliding manner, the biopsy needle device also comprises a firing seat and an unlocking push plate, the firing seat is arranged in a shell and can slide back and forth, the firing seat is provided with a clamping tongue, the inner wall of the shell is provided with a clamping block matched with the clamping tongue, the top of the firing seat is provided with a limiting connection structure matched with the second fitting and the third fitting, the firing seat is connected with a firing spring in the shell, when the firing seat is pulled back until the clamping tongue is clamped with the clamping block, the percussion seat drives the second and third accessories to complete loading of the needle sleeve and the steel sheet, and when the unlocking push plate is pushed forwards until the clamping tongue and the clamping block lose clamping connection, the percussion seat drives the second and third accessories to complete percussion of the needle sleeve and the steel sheet. According to the invention, loading of the needle sleeve and the steel sheet can be realized by single back-pull, and triggering sampling of the needle sleeve and the steel sheet can be realized by single trigger.
Description
Technical Field
The invention belongs to the field of medical instruments, relates to biopsy, and particularly relates to a biopsy needle device and a single-loading firing mechanism thereof.
Background
The biopsy device is a medical instrument and is suitable for sampling living tissues of various organs such as liver, kidney, lung, prostate, mammary gland, thyroid and the like, sucking cells and the like. The conventional biopsy device generally comprises a biopsy needle component and a firing mechanism, wherein a sampling groove is arranged on the side wall of a needle core of the conventional biopsy needle, the needle core is firstly fired and inserted into the living tissue to be sampled, and then the tissue is cut and retained in the sampling groove by inserting a cutting cannula sleeved outside the needle core before secondary firing is carried out on the cutting cannula. The disadvantages are that: the sample is long thin strip and can't fill out the sample recess usually, and once the sample volume is few, when needs the sample volume great, need puncture the sample repeatedly, and risk and wound all increase. In order to overcome the defects, the applicant designs a puncture biopsy needle (particularly referred to CN106344077A) which can sample by matching a cylindrical sampling groove axially arranged at the distal end of a needle core outer sleeve with a steel sheet playing a tissue cutting role, wherein the sampling is in a long cylindrical shape, the sampling amount is greatly increased, and the sampling frequency is favorably reduced. However, the outer sleeve and the steel sheet of the needle biopsy needle need to be driven by a firing mechanism respectively, and the firing strokes of the outer sleeve and the steel sheet are different, the firing mechanism of the needle biopsy needle is usually twice loaded (the outer sleeve and the steel sheet are loaded respectively) and twice fired (a firing button is pressed twice), and a firing mechanism which can finish sampling by pressing the firing button once is lacked.
Disclosure of Invention
The invention aims to solve the technical problem of providing a biopsy needle device and a single firing mechanism thereof, and aims to overcome the defects of the prior art.
The technical scheme for solving the technical problems is as follows: a single loading firing mechanism of a biopsy needle device comprises a first accessory, a second accessory and a third accessory which are respectively fixed corresponding to the rear ends of a needle core, a needle sleeve and a steel sheet, wherein one side of the first accessory is provided with a connecting plate for being connected with the second accessory in a sliding manner, the third accessory is connected to the second accessory in a sliding manner, the single loading firing mechanism further comprises a firing seat and an unlocking push plate, the firing seat is arranged in a shell and can slide back and forth, the firing seat is provided with a clamping tongue, a clamping block matched with the clamping tongue is arranged on the inner wall of the shell, a limiting connecting structure matched with the second accessory and the third accessory is arranged at the top of the firing seat, the firing seat is connected with a firing spring in the shell, when the firing seat is pulled back to the clamping tongue and the clamping block, the firing spring finishes potential energy accumulation and drives the second accessory and the third accessory to finish loading of the needle sleeve and the steel sheet, and when the unlocking push plate is pushed forwards until the clamping tongue and the clamping block are not clamped, the potential energy of the firing spring is released to enable the firing seat to be emitted forwards, and the firing seat drives the second accessory and the third accessory to complete the firing of the needle sleeve and the steel sheet.
On the basis of the technical scheme, the invention can be further improved as follows.
Furthermore, the limit connection structure comprises a boss, a pull groove, a first convex column and a second convex column, the rear end of the first accessory is covered on the fixed seat in the shell, the front and rear directions of the connecting plate extend and are parallel to and close to one side face of the percussion seat, the boss is positioned on one side of the percussion seat top face close to the connecting plate, the pull groove is arranged on the other side of the boss top face, the left side and the right side of the bottom of the second accessory are respectively fixed with a first lower extension plate and a second lower extension plate, the second accessory is covered on the percussion seat top face, the rear side of the bottom edge of the first lower extension plate extends downwards to form a pull block which is clamped into the pull groove, the rear side of the first lower extension plate extends outwards to form an L-shaped connecting lug, and the bottom of one side of the second lower extension plate far away from the first lower extension plate extends outwards to form a first bulge and a stop block extending outwards from the upper part, connecting plate bottom surface and top surface are equipped with first spout and second spout respectively, first spout with first protruding sliding fit, the dog with connecting plate top surface one side butt, second accessory top surface be equipped with around extend the second protruding and with the third spout cooperation of third accessory bottom surface, be equipped with the confession on the third accessory the trompil that first projection passed just the rear end of third accessory with it is equipped with the movable block to press from both sides between the second projection, third accessory one side still be equipped with engaging lug complex couple board, the top of second projection with last thorax operation portion on the casing is connected, the movable block can be followed second spout slides around and receives the second spout effect and remove in order to be close to or keep away from along left right direction the bellied back extension terminal surface of second in the slip process.
The advantage of adopting the further structural improvement is that when the trigger seat is pulled backwards, the first convex column penetrating through the pull hole drives the third accessory to move backwards to enable the front end of the steel sheet to retract into the needle sleeve, the steel sheet finishes loading into the needle sleeve, in the process, because the hook at the front end of the hook plate is not contacted with the L-shaped hook lug at the back of the top of one side of the second accessory, meanwhile, the pull block at the rear end of the first downward extension plate at the bottom of the same side of the second accessory is not contacted with the front end wall of the pull groove, the second accessory keeps the original position unchanged, when the trigger seat continues to move backwards, the hook lug is contacted with the hook plate, the pull block is contacted with the front end wall of the pull groove, when the second accessory and the third accessory synchronously move backwards until the clamping tongue and the clamping block of the trigger seat are clamped, at the needle sleeve also finishes loading right, namely, the clamping tongue and the clamping block are pulled backwards once, so that loading of the steel sheet and the needle sleeve is finished, and the needle sleeve is convenient and efficient.
Further, the rear end of third accessory is equipped with that the third is protruding just the cover is equipped with in the third arch the movable block, movable block one end be equipped with downward protrusion and with second spout sliding fit's fourth is protruding, the second spout is formed by anterior segment, middle section and rear end connection, and wherein the groove width of anterior segment and back end is the same and all be narrower than the middle section, anterior segment and back end are parallel and about the orientation the back end ratio the anterior segment is closer to the second is protruding, the middle section with the cell wall of anterior segment and back end junction all is equipped with the transition inclined plane, the fourth arch is in slide the process around in the second spout during the middle section, the transition inclined plane can drive the movable block is relative slide about the third arch in order to be close to or keep away from the bellied back extension terminal surface of second.
The further structural improvement has the advantages that the sliding grooves are arranged into a front section, a middle section and a rear section, the transition inclined surface is arranged between the two adjacent sections, so that the movable block is automatically pushed or pulled by the transition inclined surface when moving along the second sliding groove, and the movable block is close to or far away from the rear extension end surface of the second bulge, the synchronous forward pushing and triggering of the second accessory and the third accessory (at the moment, the movable block is close to and closely attached to the rear extension end surface of the second bulge, the second convex column tightly abuts against the movable block and pushes the second accessory and the third accessory to synchronously move forward until the front end of the second accessory is contacted with the front wall of the inner side of the shell, the forward punching and triggering of the needle sleeve are realized, so that a tissue sample enters the front end of the needle sleeve), and the forward pushing and triggering of the third accessory are independently performed at the last stage (at the beginning of the stage, because the movable block is just separated from the rear extension end surface due to the pushing effect of the transition inclined surface at the front end on the movable block, so that the movable block can not generate pushing force on the second accessory, thereby guarantee that the percussion seat still can antedisplacement a segment under the effect of percussion spring, first projection and second projection combined action promote the antedisplacement of third accessory when this segment of antedisplacement, realize the percussion of steel sheet, stretch out the needle cover and cut off the tissue sample to the interior cylindric sample that is detained of needle cover accomplishes the sample).
Furthermore, circular limit grooves are correspondingly formed in the rear end face of the trigger seat and the front end face of the fixing seat, and the front end and the rear end of the trigger spring respectively extend into the corresponding circular limit grooves.
Adopt above-mentioned further institutional advancement's benefit to be, it is better to the positioning action of percussion spring, does not produce the distortion of shifting as far as possible when guaranteeing spring compression or percussion, guarantees better loading and percussion effect.
Further, the loading operation part comprises a loading pull button and a first reset spring, an inner chute extending from front to back is formed in the shell, the loading pull button is connected to the inner chute in a sliding mode, the bottom of the loading pull button is provided with a bayonet for the second protruding column to be inserted into and fixed, the first reset spring is further arranged in the inner chute, one end of the first reset spring is connected with the loading pull button, and the other end of the first reset spring is connected with the inner side wall of the front end of the shell.
Adopt above-mentioned further institutional advancement's benefit to be, first reset spring can be after the completion of the winding up, and the winding up knob automatic re-setting.
Furthermore, the unlocking push plate comprises an outer frame and a tongue plate fixed at the bottom of the outer frame, the front end of the tongue plate is arranged to be an inclined plane, a transverse plate is arranged in the middle of the outer frame, a second reset spring is clamped between the front end face of the transverse plate and the rear end face of the fixing seat, a limiting plate is further arranged at the bottom of the outer frame, and a positioning block abutted against the rear end face of the limiting plate is fixed on the bottom wall of the shell.
Adopt above-mentioned further institutional advancement's benefit to be, second reset spring can make the unblock push pedal accomplish automatic re-setting after the unblock action, avoids influencing next time and loads into the bore.
Furthermore, a trigger button is arranged on the shell, and the trigger button is arranged on the side wall and/or the rear wall of the shell and can drive the unlocking push plate to move forwards when being pressed.
Adopt above-mentioned further institutional advancement's benefit to do, conveniently press the percussion.
Furthermore, the number of the firing buttons is two, namely a rear firing button and a side firing button, the rear firing button is fixedly connected with the rear end of the outer frame and extends out of the rear end of the shell, a clamping groove is formed in the side wall of the outer frame, and the side firing button is rotatably connected to the side wall of the shell and is provided with a clamping connector extending into the clamping groove in the side wall of the outer frame.
Adopt above-mentioned further institutional advancement's benefit to be, side percussion and back percussion, and percussion, facilitate the use can all be realized alone to two positions.
Further, the percussion seat and the unlocking push plate are both made of hard plastics.
The further structural improvement has the advantages of easily obtained materials, light weight and relatively low noise during percussion.
The invention also provides a biopsy needle device which is provided with the single-time loading firing mechanism.
Compared with the prior art, the invention has the beneficial effects that:
the structure of the percussion seat, the second accessory, the third accessory and the like is specially designed to realize that the needle sleeve and the steel sheet can be loaded respectively by the second accessory and the third accessory by pulling the percussion seat backwards once, the locking part only has the mutually matched clamping tongue and clamping block, the loading can be completed by pulling the percussion seat backwards once to be in a to-be-fired use state, and the sampling can be fired once only by pressing a percussion button during use, so that the use is very convenient, the defects of troublesome operation and increased sampling risk caused by twice loading and/or twice percussion last time are avoided, and the sampling efficiency and safety are greatly improved; is favorable for realizing loading and firing by one hand and overcoming the defects of double-hand operation.
Drawings
FIG. 1 is an isometric view of a biopsy needle device provided in accordance with the invention;
FIG. 2 is a schematic view of the biopsy needle device of FIG. 1 with the outer housing removed and the inner structure removed;
FIG. 3 is a front view of the internal structure of FIG. 2;
FIG. 4 is a top view of the internal structure shown in FIG. 2;
FIG. 5 is a schematic view of the assembled unlocking push plate, percussion seat and fixing seat in the internal structure shown in FIG. 2;
FIG. 6 is a top view of the assembled structure of FIG. 5;
FIG. 7 is an isometric view of the needle core, needle hub, steel plate and first through third fitting assemblies;
FIG. 8 is a top view of the assembled structure of FIG. 7;
FIG. 9 is an enlarged schematic view of first through third parts of the assembled structure of FIG. 7 (showing a portion of the hub);
FIG. 10 is an exploded view of the assembled structure of FIG. 7;
FIG. 11 is an enlarged view of the first through third fittings of FIG. 10;
FIG. 12 is a front view of the firing base;
FIG. 13 is a top view of the firing seat;
FIG. 14 is an isometric view of the firing base;
FIG. 15 is an isometric view of the unlocking push plate;
figure 16 is a top view of the unlocking push plate.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a needle core; 2. a needle sleeve; 3. a steel sheet; 4. a first fitting; 5. a second fitting; 6. a third fitting; 7. a percussion seat; 8. unlocking the push plate; 9. a housing; 10. a firing spring;
401. a connecting plate; 4011. a first chute; 4012. a second chute; 4013. a transition bevel;
501. a first lower extension plate; 502. a second downward extending plate; 503. a stopper; 504. a second protrusion; 505. a rearwardly extending end face; 5011. hanging and connecting ears;
601. hole drawing; 602. a movable block; 603. a third protrusion; 604. a hook plate; 6021. a fourth protrusion;
701. a latch; 702. a boss; 703. groove drawing; 704. a first convex column; 705. a second convex column; 706. a circular limiting groove;
801. a tongue plate; 802. a transverse plate; 803. a second return spring;
901. a fixed seat; 902. cocking and pulling the button; 903. an inner chute; 904. a first return spring; 905. and (6) firing the button.
Detailed Description
The principles and features of this invention are described in connection with the drawings and the detailed description of the invention, which are set forth below as examples to illustrate the invention and not to limit the scope of the invention.
In the description of the present invention, if terms indicating orientation such as "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc., are used, they indicate orientation or positional relationship based on that shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 16, the present invention provides a single-loading firing mechanism of a biopsy needle device, which includes a first accessory 4, a second accessory 5, and a third accessory 6 respectively fixed to the rear ends of a needle core 1, a needle sheath 2, and a steel sheet 3, a connecting plate 401 for slidably connecting the second accessory 5 is disposed on one side of the first accessory 4, the third accessory 6 is slidably connected to the second accessory 5, the single-loading firing mechanism further includes a firing base 7 and an unlocking push plate 8, the firing base 7 is disposed in a housing 9 and can slide back and forth, the firing base 7 has a latch 701, a block matched with the latch 701 is disposed on the inner wall of the housing 9, a limit connection structure matched with the second accessory 5 and the third accessory 6 is disposed on the top of the firing base 7, the firing base 7 is connected to a firing spring 10 in the housing 9, the firing base 7 is pulled back until the latch 701 is engaged with the block, the firing spring 10 finishes potential energy accumulation and the firing seat 7 drives the second accessory 5 and the third accessory 6 to finish loading the needle sleeve 2 and the steel sheet 3, the unlocking push plate 8 is pushed forwards until the clamping tongue 701 and the clamping block lose clamping connection, the potential energy of the firing spring 10 is released to enable the firing seat 7 to be launched forwards, and the firing seat 7 drives the second accessory 5 and the third accessory 6 to finish firing the needle sleeve 2 and the steel sheet 3.
It should be noted that, in the single loading firing mechanism of the biopsy needle device provided by the invention, when the clamping tongue and the clamping block are clamped by pulling backwards once, loading of the needle sleeve and the steel sheet is smoothly completed, namely, loading once is realized, when the clamping tongue and the clamping block are unlocked by pushing the unlocking push plate forwards, the firing spring pushes the firing seat to move forwards, the needle sleeve is fired firstly, then the steel sheet is fired, when the needle sleeve is fired, the front end of the needle sleeve moves forwards to exceed the front end of the needle core, so that a tissue sample enters the inner cavity at the front end of the needle sleeve, when the steel sheet which is fired later extends out from the front end of the needle sleeve, the pre-bent front end cuts the tissue sample, and thus, a cylindrical sample is retained in the needle sleeve, and sampling is completed. The biopsy needle assembly with the structure of the needle sleeve, the needle core and the steel sheet can refer to the applicant's earlier invention patent CN201610863433, in which the corresponding accessories of the connecting needle sleeve and the steel sheet are improved to realize the functions of single loading and single firing.
When sampling, the trigger seat is pulled successively to a clamping state of the clamping tongue and the clamping block, under the state, the loading of the needle sleeve and the steel sheet is completed, the sharp part at the front end of the needle core extends out of the front end of the needle sleeve, the front end of the needle core is aligned to the sampling part during sampling, the shell is held (the trigger button on the shell is avoided) to be pushed forward and punctured into the tissue, after the sharp part reaches the specified depth (X-ray photo matching judgment), the trigger button is pressed, the unlocking push plate moves forward to separate the clamping tongue from the clamping block, the trigger spring pushes the trigger seat to move forward, the needle sleeve and the steel sheet are triggered in sequence, the cylindrical sample is intercepted in the front end of the needle sleeve, the needle sleeve is extracted from the tissue, then the loading action is repeated, the steel sheet retracts into the steel sheet interlayer cavity of the needle sleeve firstly, the opening at the front end of the needle sleeve is opened, then the needle sleeve retracts, and the cylindrical tissue which is taken down in the needle sleeve is ejected from the opening at the front end of the needle sleeve by the needle core.
In an embodiment of the present invention, as shown in fig. 7 to 14, the limit connection structure includes a boss 702, a pull groove 703, a first protruding column 704 and a second protruding column 705, the rear end of the first fitting 4 is covered on a fixed seat 901 in the housing 9, the connecting plate 401 extends in the front-back direction and is parallel to and close to one side of the percussion seat 7, the boss 702 is located on one side of the top surface of the percussion seat 7 close to the connecting plate 401, the pull groove 703 is opened on the other side of the top surface of the boss 702, the left and right sides of the bottom of the second fitting 5 are respectively fixed with a first lower extension plate 501 and a second lower extension plate 502, the second fitting 5 is covered on the top surface of the percussion seat 7, the rear side of the bottom edge of the first lower extension plate 501 extends downward to form a pull block which is clamped in the pull groove 703, the rear side of the top edge of the first lower extension plate 501 extends outward to form an L-shaped connection ear 5011, second is stretched board 502 down and is kept away from the bottom of the one side of first stretching board 501 is outwards extended and is had first arch, upper portion outwards extended and have dog 503, connecting plate 401 bottom surface and top surface are equipped with first spout 4011 and second spout 4012 respectively, first spout 4011 with first protruding sliding fit, dog 503 with connecting plate 401 top surface one side butt, the protruding 504 of second that extends around 5 top surfaces of second accessory are equipped with and with the third spout cooperation of third accessory 6 bottom surface, be equipped with the confession on third accessory 6 trompil 601 that first projection 704 passed just the rear end of third accessory 6 with press from both sides between the second projection 705 and be equipped with movable block 602, third accessory 6 one side still be equipped with connect ear 5011 complex couple board 604, the top of second projection 705 with the outer operation portion of boring of casing 9 connects, movable block 602 can follow second spout 4012 slides around and is done second spout 4012 in-process of sliding and is slided in-process For moving in a left-right direction to approach or separate from the rearwardly extending end surface 505 of the second projection 504.
The fixed seat is fixed on the shell, the unlocking push plate and the firing seat can slide in the front-back direction relative to the shell, the unlocking push plate mainly has the function of enabling the clamping tongue to be separated from the clamping block, and the firing seat mainly has the function of achieving loading and firing of the needle sleeve and the steel sheet.
In one embodiment of the present invention, a third protrusion 603 is disposed at a rear end of the third fitting 6, and the movable block 602 is sleeved on the third protrusion 603, one end of the movable block 602 is provided with a fourth protrusion 6021 which protrudes downwards and is in sliding fit with the second sliding groove 4012, the second sliding groove 4012 is formed by connecting a front section, a middle section and a rear end, wherein the front and rear sections have the same groove width and are narrower than the middle section, the front and rear sections are parallel and the rear section is closer to the second protrusion 504 than the front section in the left-right direction, the groove walls at the joints of the middle section and the front section and the rear section are both provided with transitional inclined planes 4013, when the fourth bulges 6021 slide back and forth in the second sliding grooves 4012 and pass through the middle section, the transition slope 4013 can drive the movable block 602 to slide left and right relative to the third protrusion 603 to approach or depart from the second protrusion 504.
It should be noted that, the thickness of the fourth protrusion in the left-right direction is equivalent to the groove width of the front section and the rear section, the middle section is wider, two adjacent sections in the front, middle and rear are connected through the transition slope section, the fourth protrusion in the transition slope section can be pushed, specifically, the fourth protrusion in the rear transition slope is pushed leftwards when the shoe is loaded, the movable block moves leftwards to be close to the second protrusion, the front side face of the movable block is abutted to the rear extension end face 505 of the second protrusion, the right push is pushed at the front transition slope during the firing, the right movement of the movable block is separated from the rear extension end face, after the separation, the second convex column moves forwards to lose the movable block, and the movable block cannot be blocked by the second protrusion of the second accessory.
In an embodiment of the present invention, as shown in fig. 14, circular limiting grooves 706 are correspondingly formed on the rear end surface of the firing seat 7 and the front end surface of the fixing seat 901, and the front end and the rear end of the firing spring 10 respectively extend into the corresponding circular limiting grooves 706.
In an embodiment of the present invention, as shown in fig. 2 to 6, the loading operation portion includes a loading pull button 902 and a first return spring 904, the housing 9 is provided with an inner sliding groove 903 extending forward and backward, the loading pull button 902 is slidably connected in the inner sliding groove 903, the bottom of the loading pull button 902 is provided with a bayonet for inserting and fixing the second protruding column 705, the inner sliding groove 903 is further provided with the first return spring 904, one end of the first return spring 904 is connected to the loading pull button 902, and the other end of the first return spring 904 is connected to the inner side wall of the front end of the housing 9.
It should be noted that a pressing plate with a sliding groove is arranged between the upper wall of the inner cavity of the shell and the top surfaces of the first, second and third accessories, so that the accessories are prevented from bouncing upwards when being loaded or fired.
In an embodiment of the present invention, as shown in fig. 15 and 16, the unlocking push plate 8 includes an outer frame and a tongue plate 801 fixed at the bottom of the outer frame, the front end of the tongue plate 801 is set to be an inclined plane, a horizontal plate 802 is arranged in the middle of the outer frame, a second return spring 803 is sandwiched between the front end surface of the horizontal plate 802 and the rear end surface of the fixing seat 901, a limiting plate is further arranged at the bottom of the outer frame, and a positioning block abutting against the rear end surface of the limiting plate is fixed on the bottom wall of the housing 9.
In an embodiment of the present invention, a trigger button 905 is disposed on the housing 9, and the trigger button 905 is disposed on a side wall and/or a rear wall of the housing 9 and can drive the unlocking push plate 8 to move forward when being pressed.
In an embodiment of the present invention, there are two of the firing buttons 905, which are a rear firing button and a side firing button, respectively, the rear firing button is fixedly connected to the rear end of the outer frame and extends out from the rear end of the housing 9, a clamping groove is formed on the side wall of the outer frame, and the side firing button is rotatably connected to the side wall of the housing 9 and has a clamping connector extending into the clamping groove of the side wall of the outer frame.
In one embodiment of the invention, the firing seat 7 and the unlocking push plate 8 are both made of hard plastic.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A single-loading firing mechanism of a biopsy needle device comprises a first accessory (4), a second accessory (5) and a third accessory (6) which are respectively fixed corresponding to the rear ends of a needle core (1), a needle sleeve (2) and a steel sheet (3), wherein one side of the first accessory (4) is provided with a connecting plate (401) used for being connected with the second accessory (5) in a sliding manner, the third accessory (6) is connected to the second accessory (5) in a sliding manner, the single-loading firing mechanism is characterized by further comprising a firing seat (7) and an unlocking push plate (8), the firing seat (7) is arranged in a shell (9) and can slide back and forth, the firing seat (7) is provided with a clamping tongue (701), a clamping block matched with the clamping tongue (701) is arranged on the inner wall of the shell (9), and the top of the firing seat (7) is provided with a limiting connection structure matched with the second accessory (5) and the third accessory (6), trigger seat (7) with trigger spring (10) in casing (9) are connected, and the back is drawn trigger seat (7) extremely during block tongue (701) with the fixture block joint, trigger spring (10) are accomplished potential energy and are accumulated just trigger seat (7) drive second accessory (5) and third accessory (6) are accomplished right the chamber of going up of needle cover (2) and steel sheet (3), and the forward push unblock push pedal (8) extremely when block tongue (701) with the fixture block loses the joint, trigger spring (10) potential energy release makes trigger seat (7) launch forward, trigger seat (7) drive second accessory (5) and third accessory (6) are accomplished the trigger to needle cover (2) and steel sheet (3).
2. The single cocking firing mechanism of biopsy needle device according to claim 1, wherein the limiting connection structure comprises a boss (702), a slot (703), a first protruding column (704) and a second protruding column (705), the rear end of the first fitting (4) is covered on a fixed seat (901) in the housing (9), the connecting plate (401) extends in the front-back direction and is parallel to and close to one side of the cocking seat (7), the boss (702) is located at one side of the top surface of the cocking seat (7) close to the connecting plate (401), the slot (703) is opened at the other side of the top surface of the boss (702), the left and right sides of the bottom of the second fitting (5) are respectively fixed with a first lower extension plate (501) and a second lower extension plate (502), the second fitting (5) is covered on the top surface of the cocking seat (7), and the rear side of the bottom edge of the first lower extension plate (501) extends downwards to form a pull block which is clamped into the slot (703), the rear side of the top edge of the first lower extension plate (501) extends outwards to form an L-shaped connecting lug (5011), the bottom of one side of the first lower extension plate (501) is extended outwards to form a first protrusion, the upper portion of the one side of the second lower extension plate (502) extends outwards to form a stop block (503), the bottom surface and the top surface of the connecting plate (401) are respectively provided with a first sliding groove (4011) and a second sliding groove (4012), the first sliding groove (4011) is in sliding fit with the first protrusion, the stop block (503) is abutted to one side of the top surface of the connecting plate (401), the top surface of the second accessory (5) is provided with a second protrusion (504) extending forwards and backwards and matched with a third sliding groove on the bottom surface of the third accessory (6), the third accessory (6) is provided with a pull hole (601) for the first convex column (704) to pass through, and a movable block (602) is clamped between the rear end of the third accessory (6) and the second convex column (705), third accessory (6) one side still be equipped with engaging lug (5011) complex couple board (604), the top of second projection (705) with the operation portion of going up the thorax on casing (9) is connected, movable block (602) can be followed second spout (4012) slide around and receive second spout (4012) effect and move in order to be close to or keep away from along left right direction in the slip in-process the back extension terminal surface (505) of second arch (504).
3. The single cocking firing mechanism of biopsy needle device according to claim 2, wherein the rear end of the third fitting (6) is provided with a third protrusion (603) and the third protrusion (603) is sleeved with the movable block (602), one end of the movable block (602) is provided with a fourth protrusion (6021) protruding downwards and sliding fitted with the second sliding groove (4012), the second sliding groove (4012) is formed by connecting a front section, a middle section and a rear end, wherein the front section and the rear section have the same groove width and are narrower than the middle section, the front section and the rear section are parallel and are closer to the second protrusion (504) than the front section in the left-right direction, the groove walls of the middle section and the connection of the front section and the rear section are provided with transition slopes (4013), and when the fourth protrusion (6021) slides back and forth through the middle section in the second sliding groove (4012), the transition inclined plane (4013) can drive the movable block (602) to slide left and right relative to the third protrusion (603) to approach or depart from the second protrusion (504).
4. The single-loading firing mechanism of the biopsy needle device as claimed in claim 2, wherein the rear end face of the firing seat (7) and the front end face of the fixing seat (901) are correspondingly provided with circular limiting grooves (706), and the front end and the rear end of the firing spring (10) respectively extend into the corresponding circular limiting grooves (706).
5. The single-loading firing mechanism of the biopsy needle device according to claim 2, wherein the loading operation portion comprises a loading pull button (902) and a first return spring (904), an inner chute (903) extending back and forth is formed in the housing (9), the loading pull button (902) is slidably connected in the inner chute (903), a bayonet for the second boss (705) to be inserted and fixed is formed in the bottom of the loading pull button (902), the first return spring (904) is further arranged in the inner chute (903), one end of the first return spring (904) is connected with the loading pull button (902), and the other end of the first return spring is connected with the inner side wall of the front end of the housing (9).
6. The single-firing mechanism of a biopsy needle device according to claim 2, wherein the unlocking push plate (8) comprises an outer frame and a tongue plate (801) fixed at the bottom of the outer frame, the front end of the tongue plate (801) is provided with an inclined surface, a transverse plate (802) is arranged in the middle of the outer frame, a second return spring (803) is clamped between the front end surface of the transverse plate (802) and the rear end surface of the fixing seat (901), a limiting plate is further arranged at the bottom of the outer frame, and a positioning block abutting against the rear end surface of the limiting plate is fixed on the bottom wall of the housing (9).
7. The single cocking firing mechanism of biopsy needle device according to claim 6, wherein the housing (9) is provided with a firing button (905), and the firing button (905) is provided on the side wall and/or the rear wall of the housing (9) and drives the unlocking push plate (8) to move forward when being pressed.
8. The single loading firing mechanism of the biopsy needle device as claimed in claim 7, wherein the number of the firing buttons (905) is two, namely a rear firing button and a side firing button, the rear firing button is fixedly connected with the rear end of the outer frame and extends out of the rear end of the housing (9), a clamping groove is formed in the side wall of the outer frame, and the side firing button is rotatably connected to the side wall of the housing (9) and has a clamping head extending into the clamping groove of the side wall of the outer frame.
9. The single cocking firing mechanism of an biopsy needle device according to any of claims 1 to 7, wherein the firing base (7) and the unlocking push plate (8) are both made of rigid plastic.
10. A biopsy needle device having a single cocked firing mechanism as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111095913.2A CN113768550B (en) | 2021-09-18 | 2021-09-18 | Biopsy needle device and single-time loading firing mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111095913.2A CN113768550B (en) | 2021-09-18 | 2021-09-18 | Biopsy needle device and single-time loading firing mechanism thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113768550A true CN113768550A (en) | 2021-12-10 |
| CN113768550B CN113768550B (en) | 2023-09-15 |
Family
ID=78852003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111095913.2A Active CN113768550B (en) | 2021-09-18 | 2021-09-18 | Biopsy needle device and single-time loading firing mechanism thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113768550B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6358217B1 (en) * | 2000-01-31 | 2002-03-19 | Hugh Bourassa | Automatic and semi-automatic disposable biopsy needle device |
| US20040068231A1 (en) * | 2002-10-03 | 2004-04-08 | Jerome Blondeau | Device for taking a sample from a body |
| US20080071193A1 (en) * | 2004-07-09 | 2008-03-20 | Claus Reuber | Length Detection System for Biopsy Device |
| WO2008106583A1 (en) * | 2007-02-28 | 2008-09-04 | Suros Surgical Systems, Inc. | Vacuum assisted biopsy device |
| US20130165815A1 (en) * | 2011-12-23 | 2013-06-27 | Medical Components, Inc. | Insertion Device for Providing Fine Needle Aspiration and Core Biopsy |
| CN106344077A (en) * | 2016-09-29 | 2017-01-25 | 施康培医疗科技（武汉）有限公司 | Biopsy and using method thereof |
| CN107174294A (en) * | 2017-06-01 | 2017-09-19 | 施康培医疗科技（武汉）有限公司 | A kind of secondary percussion biopsy needle device |
| CN109965917A (en) * | 2019-04-27 | 2019-07-05 | 西安高通医学发展有限公司 | A kind of full-automatic biopsy needle |
| CN209826801U (en) * | 2019-02-20 | 2019-12-24 | 苏州市立普医疗科技有限公司 | Biopsy needle with two forms of excitation |
| CN110731812A (en) * | 2019-11-28 | 2020-01-31 | 搏时（北京）医疗科技有限公司 | Split sternum puncture needle handle assembly and split sternum puncture needle |
| CN111281498A (en) * | 2020-03-13 | 2020-06-16 | 江苏工大博实医用机器人研究发展有限公司 | Automatic particle implantation device |
| CN111643127A (en) * | 2020-05-28 | 2020-09-11 | 李九智 | Double-groove tissue biopsy needle |
-
2021
- 2021-09-18 CN CN202111095913.2A patent/CN113768550B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6358217B1 (en) * | 2000-01-31 | 2002-03-19 | Hugh Bourassa | Automatic and semi-automatic disposable biopsy needle device |
| US20040068231A1 (en) * | 2002-10-03 | 2004-04-08 | Jerome Blondeau | Device for taking a sample from a body |
| US20080071193A1 (en) * | 2004-07-09 | 2008-03-20 | Claus Reuber | Length Detection System for Biopsy Device |
| WO2008106583A1 (en) * | 2007-02-28 | 2008-09-04 | Suros Surgical Systems, Inc. | Vacuum assisted biopsy device |
| US20130165815A1 (en) * | 2011-12-23 | 2013-06-27 | Medical Components, Inc. | Insertion Device for Providing Fine Needle Aspiration and Core Biopsy |
| CN106344077A (en) * | 2016-09-29 | 2017-01-25 | 施康培医疗科技（武汉）有限公司 | Biopsy and using method thereof |
| CN107174294A (en) * | 2017-06-01 | 2017-09-19 | 施康培医疗科技（武汉）有限公司 | A kind of secondary percussion biopsy needle device |
| CN209826801U (en) * | 2019-02-20 | 2019-12-24 | 苏州市立普医疗科技有限公司 | Biopsy needle with two forms of excitation |
| CN109965917A (en) * | 2019-04-27 | 2019-07-05 | 西安高通医学发展有限公司 | A kind of full-automatic biopsy needle |
| CN110731812A (en) * | 2019-11-28 | 2020-01-31 | 搏时（北京）医疗科技有限公司 | Split sternum puncture needle handle assembly and split sternum puncture needle |
| CN111281498A (en) * | 2020-03-13 | 2020-06-16 | 江苏工大博实医用机器人研究发展有限公司 | Automatic particle implantation device |
| CN111643127A (en) * | 2020-05-28 | 2020-09-11 | 李九智 | Double-groove tissue biopsy needle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113768550B (en) | 2023-09-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2018203511B2 (en) | Core needle biopsy device | |
| CN212438692U (en) | Biopsy device and trigger unlocking mechanism thereof | |
| US4924878A (en) | Actuating mechanism for biopsy needle | |
| CA2038413A1 (en) | Instrument for tissue sampling | |
| EP1077646A1 (en) | Reusable automated biopsy needle handle | |
| CN113768550A (en) | Biopsy needle device and single loading firing mechanism thereof | |
| US20050075580A1 (en) | Soft tissue biopsy instrument | |
| CN212438685U (en) | Biopsy device and winding firing mechanism thereof | |
| CN212438684U (en) | Biopsy device and sampling stroke adjusting mechanism thereof | |
| CN113349858B (en) | A insurance subassembly for chamber mirror anastomat | |
| CN113598767B (en) | Blood sampling pen | |
| CN113598766B (en) | Blood sampling pen | |
| CN212438687U (en) | Biopsy device and trigger unlocking mechanism thereof | |
| CN213129609U (en) | Soft tissue puncture sampling biopsy needle | |
| CN112168229B (en) | Biopsy device | |
| CN113598768A (en) | Blood sampling pen | |
| CN220385193U (en) | Mammary gland positioning needle with roller type guide wire moving structure | |
| CN217853072U (en) | Disposable full-automatic biopsy needle | |
| CN113440176A (en) | Biopsy device | |
| CN113440175A (en) | Biopsy device, firing unlocking mechanism thereof and firing unlocking method | |
| CN217772385U (en) | Puncture biopsy gun | |
| CN113440174B (en) | Biopsy device, sampling stroke adjusting mechanism thereof and winding firing method | |
| CN211243531U (en) | Endoscopic surgery stitching instrument | |
| CN116269530A (en) | Semi-automatic biopsy needle | |
| CN117379115A (en) | Disposable biopsy needle with one-time pressing of upper chord |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220825 Address after: Room 3-2, Building 1, Baijinkezi, the intersection of Hongtu Avenue and Yintan Road, Jiangjun Road Street, Dongxihu District, Wuhan City, Hubei Province 430000 Applicant after: Delin medical technology (Wuhan) Co.,Ltd. Address before: 430000 Room 601, 6 / F, No. 128-134 Shengli Street, Jiang'an District, Wuhan City, Hubei Province Applicant before: Shi Kangpei medical technology (Wuhan) Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |