CN117618035A - Disposable biopsy needle with secondary pressing winding structure - Google Patents
Disposable biopsy needle with secondary pressing winding structure Download PDFInfo
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- CN117618035A CN117618035A CN202311715545.6A CN202311715545A CN117618035A CN 117618035 A CN117618035 A CN 117618035A CN 202311715545 A CN202311715545 A CN 202311715545A CN 117618035 A CN117618035 A CN 117618035A
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- 238000001574 biopsy Methods 0.000 title claims abstract description 44
- 238000004804 winding Methods 0.000 title claims abstract description 35
- 238000010304 firing Methods 0.000 claims abstract description 71
- 238000005070 sampling Methods 0.000 claims abstract description 15
- 230000006835 compression Effects 0.000 claims 9
- 238000007906 compression Methods 0.000 claims 9
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 210000004872 soft tissue Anatomy 0.000 description 18
- 230000001960 triggered effect Effects 0.000 description 9
- 210000001519 tissue Anatomy 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 206010028980 Neoplasm Diseases 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007170 pathology Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 210000001165 lymph node Anatomy 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 238000010827 pathological analysis Methods 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 210000002307 prostate Anatomy 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Classifications
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- 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
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Pathology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a disposable biopsy needle with a secondary pressing winding structure, which comprises a shell, an outer needle tube and an inner needle rod, wherein a handle is arranged above the shell, an outer needle tube seat, an inner needle rod seat, a first spring and a second spring are arranged inside the shell, a pull plate is arranged above the inside of the shell, a pull rod is connected between the pull plate and the handle, a firing button is arranged at the right end of the shell, a second deformation strip, a third deformation strip and a fourth deformation strip are arranged on the outer needle tube seat, a triangular rib and a guide column are arranged at the right end of the fourth deformation strip, a fifth deformation strip is arranged above the inner needle rod seat, a positioning groove is formed at the left end of the inner needle rod seat, a third positioning buckle is arranged at the rear side of the inner needle rod seat, the shell is divided into a front shell and a rear shell, a turning guide rail is arranged in the front shell and the rear shell, a first deformation strip and a stop block are arranged on the inner side of the rear shell, and a first positioning buckle is arranged at the left end of the first deformation strip. The beneficial effects of the invention are as follows: the use is stable, the false firing phenomenon can not occur, the operation is simple and labor-saving, and the sampling is convenient.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a disposable biopsy needle with a secondary pressing winding structure.
Background
Tissue tumor is a disease seriously damaging human health and life, and in recent years, the incidence rate gradually increases and the incidence age gradually decreases, so that the tissue tumor is of great significance for early and accurate diagnosis. The correct diagnosis requires three combinations of clinic, image and pathology, wherein the pathological diagnosis plays a key role in the selection of a treatment scheme, and the puncture biopsy is a main way for obtaining a tissue sample. A disposable biopsy needle is a single-use biopsy instrument for confirming tissue pathology, and is clinically used for biopsies of liver, kidney, prostate, enlarged lymph nodes and various soft tissues. The disposable biopsy needle is a puncture biopsy device commonly used at present, and comprises an outer needle tube and an inner needle rod, wherein the tip end of the inner needle rod is provided with a sampling groove, the outer needle tube and the inner needle rod after winding are penetrated into soft tissues, then the inner needle rod and the outer needle tube are triggered, the inner needle rod moves a certain distance, then the outer needle tube moves again, a part of the soft tissues is cut, and then the disposable biopsy needle is pulled back to take out the cut soft tissues for subsequent detection.
The existing biopsy needles are various, but most of the biopsy needles have complex structures and high operation difficulty, and the existing biopsy needles are in a left-right and up-down pressing mode, so that a user presses the biopsy needles with fingers twice to finish winding. When in use, a great force is needed, the labor is wasted, and when the product is taken after winding, the tripping and false firing phenomena can occur during the operation of a patient. The disposable full-automatic biopsy needle disclosed in the patent publication No. CN217853072U has the advantages that the needle tube keys are pressed firstly during operation, then the needle core keys are pressed, the needle tube seat and the needle core seat are wound up through pressing left and right, the pressing is laborious, the needle tube seat and the needle core seat can be accurately operated only through training before operation, and the operation difficulty is high. Simultaneously, first couple and second couple are with the form and the casing joint of outsourcing, and first couple and second couple take place outwards to warp easily and lead to the dropout, and then take place the mistake to fire the phenomenon easily.
Disclosure of Invention
The invention aims to provide a disposable biopsy needle with a secondary pressing winding structure, which solves the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a disposable biopsy needle of secondary pressing winding structure, includes casing, outer needle tube and interior needle bar, outer needle tube installs in the left end of casing, interior needle bar inserts and locates in the outer needle tube, the left end of interior needle bar is equipped with the sampling slot, the top of casing is equipped with the handle rather than rotating and being connected, the inside left end of casing is equipped with the outer needle tube seat that is connected with outer needle tube, be equipped with the interior needle bar seat that is connected with interior needle bar in the middle of the inside of casing, the right side of outer needle tube seat is equipped with first spring, the right side of interior needle bar seat is equipped with the second spring, the inside top of casing is equipped with the arm-tie, rotate between arm-tie and the handle and be connected with the pull rod, the casing right-hand member is equipped with the firing button, the casing divide into front housing and the back casing that the cooperation set up, the top left end of outer needle tube seat is equipped with the second and warp the strip, the left end of the second deformation strip is provided with a first clamping hook, the right end of the outer needle tube seat is provided with a third deformation strip, the right end of the third deformation strip is provided with a second clamping hook, the upper part of the third deformation strip is provided with a fourth deformation strip, the extending length of the right end of the fourth deformation strip is longer than that of the third deformation strip, the right end face of the fourth deformation strip is provided with a protruding triangular rib, the upper part of the right end of the fourth deformation strip is provided with a guide post, the upper part of the inner needle tube seat is provided with a fifth deformation strip, the left end of the fifth deformation strip is provided with a third clamping hook, the left end face of the inner needle tube seat is provided with a positioning groove matched with the triangular rib, the lower part of the rear side of the inner needle tube seat is provided with a third positioning buckle, the middle of the front shell and the rear shell is provided with a guide rail, the middle lower part of the inner side of the rear shell is provided with the first deformation strip, the left end of the first deformation strip is provided with a first positioning buckle, a stop block is arranged below the first deformation strip.
Further preferably, the number of the third deformation strips and the number of the fourth deformation strips are two, and the two third deformation strips are arranged in parallel, so that the outer needle tube seat is convenient to insert into the first spring, and the movement of the outer needle tube seat is not influenced; the two fourth deformation strips are gradually opened from left to right, when the fourth deformation strips are separated from the inner needle bar seat, the two fourth deformation strips can be opened, and when the inner needle bar seat is triggered, the inner needle bar seat cannot impact the fourth deformation strips.
Further preferably, an arc-shaped guide groove is formed in the inner side of the lower part of the turning guide rail and used for guiding movement of the guide post, and when the outer needle tube seat is triggered, the guide post is guided to move, so that the triggering of the inner needle rod seat is not influenced by the fourth deformation strip, and the inner needle rod seat extrudes two third deformation strips to deform, and the triggering of the outer needle tube seat is triggered; the outer side of the turning guide rail is provided with an inclined plane close to the end of the outer needle tube seat, and the inclined plane is used for guiding the guide column to move when the outer needle tube seat is wound, so that the fourth deformation strip can be abutted with the inner needle rod seat after being deformed, and the inner needle rod seat is pushed to move.
Further preferably, the inner sides of the right ends of the front shell and the rear shell are respectively provided with a supporting plate for supporting the pulling plate; a first guide groove is formed in the front shell and the rear shell and above the supporting plate, so that the pull rod can move conveniently; the inside of front casing and back casing all is equipped with two second guide slots along the length direction of casing for the removal direction of outer needle tube seat and interior needle bar seat.
Further preferably, an upper chord window perpendicular to the upper chord window is arranged in the middle of the rear shell, a rectangular through hole is arranged on the upper chord window and is used for clamping a second clamping hook at the right end of the third deformation strip, and fixation of the outer needle tube seat after upper chord is achieved.
Further preferably, the front side and the rear side of the outer needle tube seat are provided with a first guide block for moving and guiding the outer needle tube seat; the front side and the rear side of the inner needle bar seat are respectively provided with a second guide block used for moving and guiding the inner needle bar seat; the right end of the inner needle bar seat is provided with an inserting rod which is inserted into the second spring, so that the inner needle bar seat is connected with the second spring; and a pressing groove is arranged in the middle of the left end of the inner needle bar seat and used for extruding the second clamping hook to deform the third deformation strip, so that the second clamping hook is tripped with the upper chord window, and the firing of the outer needle bar seat is realized.
Further preferably, two fourth hooks are arranged below the left end of the pulling plate and used for hooking the first hooks at the left end of the second deformation strip 51 so as to pull the outer needle tube seat to move to the right; two fifth hooks are arranged below the middle of the pulling plate and used for hooking the third hooks at the left end of the fifth deformation strip, so that the inner needle bar seat is pulled to move to the right; the two fourth hooks and the two fifth hooks are arranged at intervals front and back, so that the setting of the firing button is facilitated.
Further preferably, the left end of the pulling plate is provided with two sliding guide grooves, the two sliding guide grooves are respectively arranged on the front side and the rear side of the pulling plate and are arranged left and right, and the accurate firing of the firing button is ensured through the arrangement of the guide grooves; a rotating shaft is arranged above the right end of the pull plate and is used for being rotationally connected with the pull rod; the right side of rotation axis is equipped with fourth location knot for the buckle of handle, fixed.
Further preferably, the firing button comprises a first firing bar, a second firing bar and a third firing bar, the second firing bar is arranged at the left end of the first firing bar, the third firing bar is arranged below the first firing bar, and the third clamping hook is downwards extruded by the first firing bar to enable the third clamping hook to trip with the fifth clamping hook, so that the tripping of the inner needle bar seat and the pulling plate is realized; the first clamping hook is downwards extruded through the second firing bar, so that the first clamping hook and the fourth clamping hook are tripped, and the tripping of the outer needle tube seat and the pulling plate is realized; the first deformation strip is extruded by the third firing bar, so that the first positioning buckle and the third positioning buckle are tripped, the first positioning buckle can be prevented from blocking the complete firing of the inner needle bar seat, and the firing of the outer needle tube seat is further ensured. The front side and the rear side of the second firing bar are respectively provided with a sliding buckle block which is clamped on the corresponding sliding guide groove and is used for guiding the sliding of the firing button.
Further preferably, a second positioning buckle matched with the fourth positioning buckle is arranged on the inner side of the right end of the handle, so that the handle is fixed; the handle is provided with an avoidance hole, and the avoidance hole is positioned above the second positioning buckle, so that the fourth positioning buckle and the second positioning buckle are buckled conveniently.
The beneficial effects are that: according to the disposable biopsy needle with the secondary pressing winding structure, through the arrangement of the fourth deformation strips and the turning guide rail, the two fourth deformation strips are in opposite deformation and are in butt joint with the inner needle bar seat when the outer needle tube seat is wound, the inner needle bar seat is moved for a certain distance, a pull plate can be conveniently buckled with the inner needle bar seat to realize the movement winding of the inner needle bar seat, the winding of the outer needle tube seat and the inner needle bar seat can be realized through two pressing, the winding of the outer needle tube seat and the inner needle bar seat can be realized through one firing of the firing button, the winding of the outer needle tube seat and the inner needle bar seat can be realized through one pressing of the handle, namely, the outer needle tube moves rightwards and the inner needle bar is not moved, and a sampling groove on the inner needle bar is leaked, so that a cut soft tissue sample can be taken out conveniently, and the disposable biopsy needle is simple and convenient; through the arrangement of the first deformation strip, the first positioning buckle and the third positioning buckle, the positioning of the movement set distance of the inner needle rod seat is realized, the winding stability of the outer needle tube seat can be effectively ensured, and the use stability of the disposable biopsy needle is improved; the outer needle tube seat and the inner needle bar seat both adopt double fastening structures, the fastening is firm, the tripping phenomenon can not occur, and the occurrence of the false firing phenomenon can be stopped; the disposable biopsy needle has the advantages of simple structure, ingenious design, few parts, easy installation, simple and convenient operation, labor saving, easy winding, unhooking and firing, easy assembly, convenient sampling and labor saving.
Drawings
FIG. 1 is a schematic diagram of a front view of a disposable biopsy needle without a front housing with a secondary push cocking mechanism according to an embodiment of the present invention;
FIG. 2 is a schematic axial side view of a disposable biopsy needle without front housing with a secondary push cocking mechanism according to an embodiment of the present invention;
FIG. 3 is a schematic axial side view of a disposable biopsy needle with a secondary push-up chord structure according to an embodiment of the present invention;
FIG. 4 is a schematic view of a front view of a disposable biopsy needle with a secondary push-up chord structure according to an embodiment of the present invention;
FIG. 5 is a schematic view of an exploded structure of a housing according to an embodiment of the present invention;
FIG. 6 is an enlarged schematic view of the structure shown at A in FIG. 5;
FIG. 7 is a schematic view of an axial side structure of an outer needle hub according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of an axial structure of an inner needle bar base according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of an axial side structure of a pulling plate according to an embodiment of the present invention;
FIG. 10 is a schematic view of a partially cut-away structure of a disclosed handle according to an embodiment of the invention;
FIG. 11 is a schematic diagram of the axial structure of a firing button according to an embodiment of the present invention.
Reference numerals: 1-a shell, 11-a front shell, 12-a rear shell, 121-a winding window, 122-a first deformation strip, 123-a first positioning buckle, 124-a stop, 13-a support plate, 14-a first guide groove, 15-a second guide groove, 2-a handle, 21-a second positioning buckle, 22-a avoidance hole, 3-an outer needle tube, 4-an inner needle bar, 5-an outer needle tube seat, 51-a second deformation strip, 52-a first clamping hook, 53-a third deformation strip, 54-a second clamping hook, 55-a fourth deformation strip, 56-a triangular rib, 57-a guide post, 58-a first guide block, 6-inner needle bar seat, 61-fifth deformation strip, 62-third clamping hook, 63-pressing groove, 64-positioning groove, 65-second guide block, 66-third positioning buckle, 67-inserting rod, 7-first spring, 8-second spring, 9-pull plate, 91-fourth clamping hook, 92-fifth clamping hook, 93-sliding guide groove, 94-rotation shaft, 95-fourth positioning buckle, 10-pull rod, 20-firing button, 201-first firing rod, 202-second firing rod, 203-third firing rod, 204-sliding buckle block and 30-safety lock.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in figures 1-11, the disposable biopsy needle with the secondary pressing winding structure is used for puncturing and cutting soft tissues for in-vivo examination, and is suitable for pathological examination and confirmation of various substantive organs and tissues. The disposable biopsy needle comprises a shell 1, an outer needle tube 3 and an inner needle rod 4, wherein the outer needle tube 3 is arranged at the left end of the shell 1, the inner needle rod 4 is inserted into the outer needle tube 3, a sampling groove is formed in the left end of the inner needle rod 4, soft tissues are penetrated into the inner needle rod 4, then the outer needle tube 3 is penetrated into the soft tissues again, a cutting edge is arranged on the needle tip section of the outer needle tube 3, a part of samples can be cut off from the soft tissues, and the samples are stored in the sampling groove of the inner needle rod 4, so that the soft tissue samples can be cut off. The upper part of the shell 1 is provided with a handle 2 which is rotationally connected with the handle, the left end of the inside of the shell 1 is provided with an outer needle tube seat 5 which is connected with an outer needle tube 3, the middle of the inside of the shell 1 is provided with an inner needle tube seat 6 which is connected with an inner needle rod 4, the right side of the outer needle tube seat 5 is provided with a first spring 7, the right side of the inner needle tube seat 6 is provided with a second spring 8, the upper part of the inside of the shell 1 is provided with a pull plate 9, a pull rod 10 is rotationally connected between the pull plate 9 and the handle 2, the right end of the shell 1 is provided with a firing button 20, wherein the handle 2 can pull the pull plate 9 to move left and right through the pull rod 10, one end of the pull rod 10 is rotationally connected with the middle part of the handle 2, and the other end of the pull rod 10 is rotationally connected with the right end of the pull plate 9, and the pull rod 10 can be pulled to move left through anticlockwise upward rotation of the handle 2, so that the pull rod 10 can be pulled to move left; when the handle 2 is pressed downwards clockwise, the pull rod 10 can be driven to move rightwards, so that the pull plate 9 is driven to move rightwards; the pull plate 9 can form a buckle with the outer needle tube seat 5 and the inner needle rod seat 6, so that the outer needle tube seat 5 and the inner needle rod seat 6 are driven to move rightwards to be wound; and can compress first spring 7 and second spring 8 when outer needle tube socket 5 and interior needle bar seat 6 are winded up, when pressing firing button 20 for outer needle tube socket 5 and interior needle bar seat 6 are in the tripping state, and first spring 7 can drive outer needle tube socket 5 and remove the firing leftwards, and second spring 8 can drive interior needle bar seat 6 and remove the firing leftwards, can realize the firing of outer needle tube 3 and interior needle bar 4. The shell 1 is divided into a front shell 11 and a rear shell 12 which are arranged in a front-back matching way, so that the installation of parts inside the shell 1 is facilitated, and the assembly of the disposable biopsy needle is facilitated.
In this application, the top left end of outer needle tube seat 5 is equipped with second deformation strip 51, and the left end of second deformation strip 51 is equipped with first pothook 52, can buckle mutually with fourth pothook 91 on the arm-tie 9 through first pothook 52, realizes that arm-tie 9 drives outer needle tube seat 5 and removes, and second deformation strip 51 can warp from top to bottom, and convenient first pothook 52 and fourth pothook 91 are tripped when percussion. The right end of the outer needle tube seat 5 is provided with a third deformation strip 53, the right end of the third deformation strip 53 is provided with a second clamping hook 54, the second clamping hook 54 can hook the winding window 121 on the rear shell 12 to fix the wound outer needle tube seat 5, and the third deformation strip 53 can deform forwards and backwards, so that the second clamping hook 54 can be conveniently tripped from the shell 1 during firing. A fourth deformation strip 55 is arranged above the third deformation strip 53, the right end extension length of the fourth deformation strip 55 is longer than that of the third deformation strip 53, a protruding triangular rib 56 is arranged on the right end face of the fourth deformation strip 55, a guide post 57 is arranged above the right end of the fourth deformation strip 55, and the fourth deformation strip 55 is used for pushing the inner needle rod seat 6 to move for 2mm, so that the pull plate 9 can be buckled with the inner needle rod seat 6; the triangular rib 56 is used for positioning the fourth deformation strip 55 and the inner needle bar seat 6, and the guide post 57 is used for guiding the movement of the fourth deformation strip 55. The upper part of the inner needle bar seat 6 is provided with a fifth deformation bar 61, the left end of the fifth deformation bar 61 is provided with a third clamping hook 62, the third clamping hook 62 can be buckled with a fifth clamping hook 92 on the pulling plate 9, the pulling plate 9 pulls the inner needle bar seat 5 to move, the fifth deformation bar 61 can deform up and down, and the third clamping hook 62 and the fifth clamping hook 92 are convenient to trip during firing. The left end face of the inner needle bar seat 6 is provided with a positioning groove 64, when the triangular rib 56 at the right end of the fourth deformation strip 55 is inserted into the positioning groove 64, the inner needle bar seat 6 can be pushed to move rightwards for a certain distance (2 mm), and the pulling plate 9 and the inner needle bar seat 6 are convenient to buckle. A third positioning buckle 66 is arranged below the rear side of the inner needle bar seat 6 and is used for positioning the inner needle bar seat 6 after 2mm of movement. The middle in the front shell 11 and the rear shell 12 is provided with a turning guide rail 16 which is used for guiding the fourth deformation strip 55 and extruding the fourth deformation strip 55, so that the deformation of the fourth deformation strip 55 is realized, and the triangular rib 56 at the right end of the fourth deformation strip 55 can be inserted into the positioning groove 64. A first deformation strip 122 is arranged below the middle of the inner side of the rear shell 12, a first positioning buckle 123 is arranged at the left end of the first deformation strip 122, a stop block 124 is arranged below the first deformation strip 122, and the third positioning buckle 66 can be hooked through the first positioning buckle 123 to position the inner needle bar seat 6; the stopper 124 is used for assisting the deformation of the first deformation strip 122 to prevent the third positioning buckle 66 and the first positioning buckle 123 from being clamped when the inner needle bar seat 6 is triggered, so that the outer needle seat 5 cannot be triggered.
In the present application, the number of the third deformation strips 53 and the fourth deformation strips 55 is two, the number of the first deformation strips 122, the second deformation strips 51 and the fifth deformation strips 61 is one, and the two third deformation strips 53 are arranged in parallel, so that the two second hooks 54 are convenient to be clamped with the shell 1; when the outer needle tube seat 5 moves to the right for winding, the two fourth deformation strips 55 can move oppositely under the action of the two turning guide rails 16 for deformation, so that the triangular ribs 56 at the right end of the fourth deformation strips 55 are abutted against the positioning grooves 64 at the left end of the inner needle rod seat 6, and when the inner needle rod seat 6 moves to the right for winding, the triangular ribs 56 at the right end of the fourth deformation strips 55 are separated from the positioning grooves 64, the two fourth deformation strips 55 can move reversely and restore to the open state, the fourth deformation strips 55 can not be impacted when the inner needle rod seat 6 is triggered, and the outer needle tube seat 5 is convenient to trigger. The inner side of the lower part of the turning guide rail 16 is provided with an arc-shaped guide groove which is used for guiding the fourth deformation strip 55 to move when the outer needle tube seat 5 moves leftwards to trigger, so that the position of the fourth deformation strip 55 is reset after the outer needle tube seat 5 is triggered; the outer side of the turning guide rail 16, which is close to the outer needle tube seat 5, is provided with an inclined surface for being matched with the guide post 57 to guide the two fourth deformation strips 55 to move and deform in opposite directions.
In the application, the inner sides of the right ends of the front shell 11 and the rear shell 12 are respectively provided with a supporting plate 13 for supporting the pulling plate 9; a first guide groove 14 is arranged above the supporting plate 13 on the front shell 11 and the rear shell 12 and is used for moving and abdicating and limiting the pull rod 10; the front shell 11 and the rear shell 12 are respectively provided with two second guide grooves 15 along the length direction of the shell 1, and the second guide grooves are used for guiding the movement of the first guide blocks 58 on the outer needle tube seat 5 and the second guide blocks 65 on the inner needle rod seat 6.
In this application, be equipped with the rectangle through-hole on the last string window 121, the tip second pothook 54 of third deformation strip 53 can pass the rectangle through-hole and hook the right flank of rectangle through-hole, realizes the location to external needle tube seat 5.
In the application, the right end of the inner needle bar seat 6 is provided with an inserting rod 67 which is used for being inserted into the second spring 8, so that the inner needle bar seat 6 is connected with the second spring 8, and the second spring 8 is convenient for driving the inner needle bar seat 6 to perform firing motion; the middle of the left end of the inner needle bar seat 6 is provided with a pressing groove 63, and the second clamping hooks 54 at the right ends of the two third deformation strips 53 can be extruded through the pressing groove 63, so that the second clamping hooks 54 can be separated from the upper chord window 121, and the firing of the outer needle bar seat 5 is realized.
In this application, the fourth hook 91 and the fifth hook 92 are two, and the two fourth hooks 91 and the two fifth hooks 92 are all arranged at intervals, so that the second firing bar 202 of the firing button 20 passes through. The second firing bar 202 of the firing button 20 passes through the two fifth hooks 92 and the fourth hooks 91, and can press the first hooks 52 to press the second deformation strip 51 downwards, so that the second deformation strip 51 deforms downwards, and the first hooks 52 and the fourth hooks 91 are tripped; the first firing rod 201 of the firing button 20 can press the two third hooks 62 to press the fifth deformation strip 61 down, so that the fifth deformation strip 61 deforms down, and the third hooks 62 are tripped with the fifth hooks 92.
In this application, the left end of arm-tie 9 is equipped with two slip guide slots 93, two slip guide slots 93 divide to locate the front and back both sides of arm-tie 9 and all control the setting, the slip knot piece 204 of both sides is located on two slip guide slots 93 to the card respectively around the second firing bar 202, realize the removal direction to slip knot piece 204, guarantee that second firing bar 202 can be moved about relative arm-tie 9's below, guarantee that the removal of second firing bar 202 and first firing bar 201 is steady, fire accurately, realize the tripping, the firing to outer needle tube seat 5, the interior needle bar seat 6 of buckle mutually with arm-tie 9. A rotating shaft 94 is arranged above the right end of the pull plate 9 and is used for being connected with the pull rod 10 in a rotating way. A fourth positioning buckle 95 is arranged on the right side of the rotating shaft 94 and is used for being buckled with the second positioning buckle 21 on the handle 2, so that the handle 2 is fixed; the handle 2 is provided with the avoiding hole 22, the avoiding hole 22 is positioned above the second positioning buckle 21, the second positioning buckle 21 and the fourth positioning buckle 95 are guaranteed to be buckled, meanwhile, whether the handle 2 is fixed or not is convenient to observe, the fourth positioning buckle 95 is convenient to stir when the handle 2 is pulled up, the second positioning buckle 21 and the fourth positioning buckle 95 are tripped, and the handle 2 is convenient to pull up.
In the application, the safety lock 30 is clamped below the firing button 20, the safety lock 30 is provided with a positioning boss, the positioning boss is abutted with the firing button 20, and when the safety lock 30 is pressed, the positioning boss can be separated from the firing button 20, so that the firing button 20 can be pressed; the firing button 20 is used for preventing the false firing when the needle is used but not cutting soft tissues, so that the safety and the accuracy of the disposable biopsy needle are ensured
In the application, the use principle of the disposable biopsy needle is as follows:
before puncturing soft tissue, the handle 2 is pulled up, the pull rod drives the pull plate 9 to move leftwards, the fourth hook 91 and the fifth hook 92 on the pull plate 9 are driven to move leftwards, the fourth hook 91 hooks the first hook 52 at the left end of the second deformation strip 51 of the outer needle tube seat 5, and the fifth hook 92 does not hook the third hook 62 at the left end of the fifth deformation strip 61 of the inner needle rod seat 6; then, the handle 2 is pressed down to drive the outer needle tube seat 5 to move rightwards to start winding, and meanwhile, the guide posts 57 above the right ends of the two fourth deformation strips 55 move along the outer sides of the two turning guide rails 16, so that the two fourth deformation strips 55 move rightwards and move oppositely until the triangular ribs 56 at the right ends of the two fourth deformation strips 55 are abutted with the pressing grooves 63 at the left ends of the inner needle rod seat 6, and as the outer needle tube seat 5 moves rightwards, the first clamping hooks 52 are inserted into the winding window 121, and the fourth deformation strips 55 descend the inner needle rod seat 6 to push rightwards by 2mm; the handle 2 is pulled up again, the fifth clamping hook 92 on the pulling plate 9 can hook the third clamping hook 62 at the left end of the fifth deformation strip 61 on the inner needle bar seat 6 which has moved rightwards by 2mm, the handle 2 is pressed down to drive the inner needle bar seat 6 to move rightwards for winding, until the handle 2 is pressed down to the upper surface of the shell 1, the second positioning buckle 21 of the handle 2 is buckled with the fourth positioning buckle 95 of the pulling plate 9, and winding of the inner needle bar seat 6 is completed;
the disposable biopsy needle is penetrated into a sampling position in soft tissue, the safety lock 30 is pressed, the firing button 20 is pressed, the third firing bar 203 is firstly contacted with the first deformation bar 122 under the action of the stop block 124, and the first deformation bar 122 is extruded and deformed backwards, so that the first positioning buckle 123 at the left end of the first deformation bar 122 is tripped with the third positioning buckle 66 at the rear side of the inner needle bar seat 6; then the second firing bar 202 presses the first hook 52 at the left end of the second deformation strip 51, so that the second deformation strip 51 deforms downwards, and the first hook 52 is tripped with the fourth hook 91 on the pulling plate 9; the first firing bar 201 presses the third clamping hook 62 at the left end of the fifth deformation strip 61 to enable the fifth deformation strip 61 to deform downwards, and the third clamping hook 62 is tripped with the fifth clamping hook 92 on the pulling plate 9; at this time, the inner needle bar seat 6 moves to the left under the action of the second spring 8 to trigger, so as to drive the inner needle bar 4 to puncture a certain distance and penetrate into soft tissues for a certain distance, after the inner needle bar seat 6 is triggered, the pressing groove 63 at the left end of the inner needle bar seat 6 contacts the second clamping hooks 54 at the right end of the third deformation strip 53 of the outer needle bar seat 5, and begins to squeeze the two second clamping hooks 54, so that the third deformation strip 53 moves and deforms in opposite directions, the two second clamping hooks 54 are tripped from the upper chord window 121, the outer needle bar seat 5 moves to the left to trigger under the action of the first spring 7, so as to drive the outer needle tube 3 to synchronously move, cut out a soft tissue part and store the soft tissue part in the sampling groove of the inner needle bar 4, thus cutting out a soft tissue sample is completed, and then the disposable biopsy needle is pulled out;
when the disposable biopsy needle is pulled out, sampling from the sampling groove is started, the handle 2 is pulled up, the fourth clamping hook 91 on the pulling plate 9 hooks the first clamping hook 52 at the left end of the second deformation strip 51 of the outer needle tube seat 5, the fifth clamping hook 92 on the same pulling plate 9 does not hook the third clamping hook 62 at the left end of the fifth deformation strip 61 of the inner needle tube seat 6, the handle 2 is pressed down, the pulling plate 9 can only drive the outer needle tube seat 5 to move rightwards and upwards, the inner needle tube seat 6 is kept motionless, at the moment, the outer needle tube 3 moves rightwards along with the outer needle tube seat 5, the inner needle rod 4 does not move, so that a sampling groove on the inner needle rod 4 can leak, and a soft tissue sample in the sampling groove on the inner needle rod 4 can be easily taken out, so that sampling is completed.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the summary of the present invention within the scope of the present invention.
Claims (10)
1. The utility model provides a disposable biopsy needle of secondary pressing winding structure, includes casing (1), outer needle tubing (3) and interior needle bar (4), the left end in casing (1) is installed in outer needle tubing (3) is inserted in outer needle tubing (3), the left end of interior needle bar (4) is equipped with the sampling groove, the top of casing (1) is equipped with handle (2) rather than rotating to be connected, the inside left end of casing (1) is equipped with outer needle tube seat (5) that are connected with outer needle tubing (3), be equipped with interior needle bar seat (6) that are connected with interior needle bar (4) in the middle of the inside of casing (1), the right side of outer needle tube seat (5) is equipped with first spring (7), the right side of interior needle bar seat (6) is equipped with second spring (8), the inside top of casing (1) is equipped with arm-tie (9), rotate between arm-tie (9) and handle (2) and be connected with pull rod (10), casing (1) right side is equipped with casing (20), and the cooperation is characterized in that casing (12) after setting up behind casing (1). The left end above the outer needle tube seat (5) is provided with a second deformation strip (51), the left end of the second deformation strip (51) is provided with a first clamping hook (52), the right end of the outer needle tube seat (5) is provided with a third deformation strip (53), the right end of the third deformation strip (53) is provided with a second clamping hook (54), the upper part of the third deformation strip (53) is provided with a fourth deformation strip (55), the right end extension length of the fourth deformation strip (55) is longer than that of the third deformation strip (53), the right end face of the fourth deformation strip (55) is provided with a protruding triangular rib (56), the upper part of the right end of the fourth deformation strip (55) is provided with a guide post (57), the upper part of the inner needle rod seat (6) is provided with a fifth deformation strip (61), the left end of the fifth deformation strip (61) is provided with a third clamping hook (62), the left end face of the inner needle rod seat (6) is provided with a positioning groove (64) matched with the triangular rib (56), the right end face of the inner needle rod seat (6) is provided with a third buckling strip (12), the lower side of the inner needle seat (6) is provided with a third buckling strip (12), the inner side (12) is provided with a positioning groove (122), the middle buckling strip (12) is arranged on the right side of the inner side of the shell (12), the shell (12) is provided with a front buckling strip (12), a stop block (124) is arranged below the first deformation strip (122).
2. A secondary compression winding structure disposable biopsy needle according to claim 1, wherein: the number of the third deformation strips (53) and the number of the fourth deformation strips (55) are two, the two third deformation strips (53) are arranged in parallel, and the two fourth deformation strips (55) are gradually opened from left to right.
3. A secondary compression winding structure disposable biopsy needle according to claim 1, wherein: the inner side of the lower part of the turning guide rail (16) is provided with an arc-shaped guide groove, and the outer side of the turning guide rail (16) close to the outer needle tube seat (5) is provided with an inclined plane.
4. A secondary compression winding structure disposable biopsy needle according to claim 1, wherein: the right-hand member inboard of preceding casing (11) and back casing (12) all is equipped with a backup pad (13), the top that is located backup pad (13) on preceding casing (11) and back casing (12) all is equipped with a first guide way (14), the inside of preceding casing (11) and back casing (12) all is equipped with two second guide ways (15) along the length direction of casing (1).
5. A secondary compression winding structure disposable biopsy needle according to claim 1, wherein: the middle of the rear shell (12) is provided with an upper chord window (121) perpendicular to the rear shell, and the upper chord window (121) is provided with a rectangular through hole.
6. A secondary compression winding structure disposable biopsy needle according to claim 1, wherein: the outer needle tube seat (5) is provided with a first guide block (58) on the front side and the rear side, the inner needle tube seat (6) is provided with a second guide block (65) on the front side and the rear side, the right end of the inner needle tube seat (6) is provided with an inserting rod (67) inserted into the second spring (8), and a pressing groove (63) is formed in the middle of the left end of the inner needle tube seat (6).
7. A secondary compression winding structure disposable biopsy needle according to claim 1, wherein: two fourth hooks (91) are arranged below the left end of the pulling plate (9), two fifth hooks (92) are arranged below the middle of the pulling plate (9), and the two fourth hooks (91) and the two fifth hooks (92) are arranged at intervals.
8. A secondary compression winding structure disposable biopsy needle according to claim 1, wherein: the left end of arm-tie (9) is equipped with two slip guide way (93), two slip guide way (93) divide and locate the front and back both sides of arm-tie (9) and all control the setting, the right-hand member top of arm-tie (9) is equipped with rotation axis (94), the right side of rotation axis (94) is equipped with fourth location knot (95).
9. A secondary compression winding structure disposable biopsy needle according to claim 8, wherein: the firing button (20) comprises a first firing rod (201), a second firing rod (202) and a third firing rod (203), wherein the second firing rod (202) is arranged at the left end of the first firing rod (201), the third firing rod (203) is arranged below the first firing rod (201), and sliding buckling blocks (204) which are clamped on corresponding sliding guide grooves (103) are respectively arranged on the front side and the rear side of the second firing rod (202).
10. A secondary compression winding structure disposable biopsy needle according to claim 8, wherein: the inner side of the right end of the handle (2) is provided with a second locating buckle (21) matched with the fourth locating buckle (95), the handle (2) is provided with an avoidance hole (22), and the avoidance hole (22) is positioned above the second locating buckle (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311715545.6A CN117618035A (en) | 2023-12-14 | 2023-12-14 | Disposable biopsy needle with secondary pressing winding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311715545.6A CN117618035A (en) | 2023-12-14 | 2023-12-14 | Disposable biopsy needle with secondary pressing winding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117618035A true CN117618035A (en) | 2024-03-01 |
Family
ID=90030464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311715545.6A Pending CN117618035A (en) | 2023-12-14 | 2023-12-14 | Disposable biopsy needle with secondary pressing winding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117618035A (en) |
-
2023
- 2023-12-14 CN CN202311715545.6A patent/CN117618035A/en active Pending
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