CN111358506A - Disposable cytology biopsy needle - Google Patents
Disposable cytology biopsy needle Download PDFInfo
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- CN111358506A CN111358506A CN202010285706.2A CN202010285706A CN111358506A CN 111358506 A CN111358506 A CN 111358506A CN 202010285706 A CN202010285706 A CN 202010285706A CN 111358506 A CN111358506 A CN 111358506A
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- 238000001574 biopsy Methods 0.000 title claims abstract description 38
- 238000005070 sampling Methods 0.000 claims abstract description 13
- 230000002380 cytological effect Effects 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 13
- 230000000903 blocking effect Effects 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 210000004027 cell Anatomy 0.000 description 8
- 210000001685 thyroid gland Anatomy 0.000 description 6
- 208000009453 Thyroid Nodule Diseases 0.000 description 5
- 208000024770 Thyroid neoplasm Diseases 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 210000003811 finger Anatomy 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 208000024799 Thyroid disease Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 210000003813 thumb Anatomy 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000002405 diagnostic procedure Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000005224 forefinger Anatomy 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 210000002751 lymph Anatomy 0.000 description 1
- 230000003211 malignant effect Effects 0.000 description 1
- 238000013188 needle biopsy Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 208000021510 thyroid gland disease Diseases 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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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
- A61B10/0283—Pointed or sharp biopsy instruments with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe
-
- 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
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Pathology (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to the technical field of medical supplies, in particular to a disposable cytology biopsy needle. The biopsy needle comprises an inner needle assembly and an outer needle assembly, wherein the outer needle assembly comprises an outer needle base, the inner needle assembly comprises an inner needle base, a convex hand position is arranged in the middle of the outer wall of the outer needle base, and the puncture needle further comprises an automatic ejection assembly; the automatic ejection assembly comprises an elastic piece and a toggle button for triggering the elastic piece to eject, one end of the elastic piece is abutted against the hand position, the other end of the elastic piece is abutted against the inner needle seat, and the toggle button is connected with the outer needle seat; when the elastic piece pops up, the elastic piece pushes the inner needle seat to move towards the direction far away from the hand position, so that the inner needle core moves into the outer needle tube, and the outer needle tube between the end part of the outer needle tube and the end part of the inner needle core forms a sampling space. The disposable cytology biopsy needle provided by the invention is provided with the automatic ejection assembly, and when in operation, a doctor can finish the adjustment and trigger operation of the biopsy needle by using one hand, so that the personnel allocation in the operation can be reduced, and the working efficiency of the doctor is improved.
Description
Technical Field
The invention relates to the technical field of medical supplies, in particular to a disposable cytology biopsy needle for biopsy operations of thyroid, liver, pancreatic lymph and the like.
Background
Thyroid nodule is a common thyroid disease, and during detection, the thyroid nodule needs to be subjected to needle biopsy, and corresponding thyroid cells are taken out for assay so as to further judge whether the nodule is benign or malignant. Thyroid needle aspiration biopsy is a highly accurate diagnostic method and is currently widely used for diagnosing nodular thyroid diseases.
The thyroid gland pjncture needle includes inner needle core and outer needle tubing, during biopsy, under the assistance of ultrasonic equipment, pierce the needle point of pjncture needle into the tubercle position, and at this moment the doctor holds the outer needle base with one hand and keeps the position unchanged, and the other hand operates the ultrasonic probe, and the doctor assistant pulls out a small segment or directly pulls out the inner needle core, and then the doctor holds the outer needle base and carries out reciprocating puncture (generally more than 5 times of reciprocating) at the tubercle position, makes the cell at the tubercle enter the tube body of the outer needle, and after the puncture is finished, pulls out the pjncture needle, takes out the cell and carries out assay analysis; the above operation processes are circulated, and the puncture operation of the thyroid nodule is carried out for a plurality of times.
The existing puncture operation can be finished only by the cooperation of a doctor and an assistant, so that the operation mode and the operation method are adopted, and certain medical care resources are wasted.
Disclosure of Invention
In view of the above, the present invention provides a disposable cytology biopsy needle having an automatic ejection assembly, wherein a doctor can adjust and trigger the biopsy needle with one hand during an operation, thereby reducing the number of personnel in the operation and improving the working efficiency of the doctor.
One aspect of the invention provides a disposable cytology biopsy needle, which comprises an inner needle assembly and an outer needle assembly, wherein the outer needle assembly comprises an outer needle base, the inner needle assembly comprises an inner needle base, a protruding hand position is arranged in the middle of the outer wall of the outer needle base, and the puncture needle further comprises an automatic ejection assembly; the automatic ejection assembly comprises an elastic piece and a toggle button for triggering the elastic piece to eject, one end of the elastic piece is abutted against the hand position, the other end of the elastic piece is abutted against the inner needle seat, and the toggle button is connected with the outer needle seat; when the elastic piece pops up, the elastic piece pushes the inner needle seat to move towards the direction far away from the hand position, so that the inner needle core moves into the outer needle tube, and the outer needle tube between the end part of the outer needle tube and the end part of the inner needle core forms a sampling space.
Optionally, the elastic element is a spring, and the spring is sleeved on the outer needle base; one end of the inner needle seat facing the spring is provided with two parallel extension rods which extend outwards along the axial direction of the inner needle seat; one end of the spring is abutted against the hand position, the other end of the spring is connected with the supporting sheet, the supporting sheet is annularly sleeved on the outer needle seat, and the supporting sheet is abutted against the free end of the extension rod.
Optionally, the support sheet comprises a front support sheet and a rear support sheet, the front support sheet and the rear support sheet abutting to form an annular structure.
Optionally, the automatic ejection assembly further comprises a stopper; the sealing piece is arranged at the tail end of the outer wall of the outer needle seat, the spring and the supporting sheet can move between a hand position and the sealing piece, the sealing piece is provided with two notches, and the free end of the extension rod is abutted to the supporting sheet after penetrating through the two notches respectively; the free end of the extension rod is provided with a hook, and the spring springs out to enable the hook to abut against the inner wall of the sealing part so as to prevent the inner needle base from separating from the supporting sheet.
Optionally, the spring is always in compression during the travel between the hand position and the blocking member.
Optionally, the blocking member is a locking thread protruding from an outer wall of the outer needle holder.
Optionally, the automatic pop-up assembly further comprises a cylindrical cover plate, the cover plate is sleeved on the outer needle seat between the hand position and the blocking piece, a gap is formed between the cover plate and the outer wall of the outer needle seat, and the spring and the supporting piece are arranged in the gap; the shifting button is arranged on the cover plate, a through hole is formed in the cover plate, the shifting button is provided with an elastic arm, one end of the elastic arm is connected with the side wall of the through hole, a shifting part and a protruding structure are arranged at the other end of the elastic arm, the shifting part is located on the outer side of the cover plate, and the protruding structure is located on the inner side of the cover plate; the support sheet is provided with a buckle which is clamped with the protruding structure so as to keep the spring in a compressed state.
Optionally, the cover plate comprises a left cover plate and a right cover plate, the toggle button is arranged on the left cover plate or the right cover plate, and the left cover plate and the right cover plate are butted to form a cylinder; the one end of orientation hand position of left side apron and right side apron is equipped with the plug, is equipped with the jack that corresponds with the plug on the hand position, and the plug is pegged graft with the jack, makes the tip and the hand position of left side apron and right side apron form the butt.
Optionally, a gap is arranged between the abutting surfaces of the left cover plate and the right cover plate, so that the cover plate is provided with two guide channels parallel to the axial direction of the spring; the guide channel is communicated with the two notches on the blocking piece, the supporting piece is provided with two protruding sliding blocks and is respectively positioned in the guide channel, and the extension rod is positioned in the guide channel and is abutted to the protruding sliding blocks.
Optionally, the end of the outer needle hub remote from the outer needle cannula is a luer fitting.
The disposable cytology biopsy needle provided by the invention is provided with the automatic ejection assembly, and when in operation, a doctor can finish the adjustment and trigger operation of the biopsy needle by using one hand, so that the personnel allocation in the operation can be reduced, and the working efficiency of the doctor is improved.
Drawings
For purposes of illustration and not limitation, the present invention will now be described in accordance with its preferred embodiments, particularly with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural view of a disposable cytological biopsy needle provided in an embodiment of the present invention;
FIG. 2 is an exploded view of a disposable cytological biopsy needle provided in accordance with embodiments of the present invention;
FIG. 3 is a schematic structural view of the outer needle assembly;
FIG. 4 is a schematic structural view of the inner needle assembly;
FIG. 5 is a schematic view of the structure of the outer needle cannula and the end of the inner hub;
fig. 6 is a structural schematic view of the outer needle holder;
FIG. 7 is a schematic structural view of the left cover plate;
fig. 8 is a structural schematic view of the inner needle seat.
In the figure:
1: an outer needle tube; 2: an inner needle core; 3: an outer needle base; 4: a left cover plate; 5: a rear support sheet; 6: a spring; 7: an inner needle seat; 8: a front support sheet; 9: a right cover plate; 10: sampling space; 31: a left pressing position; 32: a right pressing position; 33: locking the threads; 34: a luer fitting; 41: a toggle button is pushed; 71: a front hook; 72: a rear hook; 73: an extension rod; 411: a raised structure; 412: a toggle part.
Detailed Description
In the embodiment of the invention, the automatic ejecting component is additionally arranged on the outer needle seat, and after the toggle button is triggered, the inner needle seat can be automatically ejected under the action of the elastic piece, so that a doctor can complete operation by a single person without cooperation of other people, the personnel allocation in the operation can be reduced, and the working efficiency of the doctor is improved.
FIG. 1 is a schematic structural view of a disposable cytological biopsy needle provided in an embodiment of the present invention; FIG. 2 is an exploded view of a disposable cytological biopsy needle provided in accordance with embodiments of the present invention; FIG. 3 is a schematic structural view of the outer needle assembly; FIG. 4 is a schematic view of the inner needle assembly. As shown in fig. 1 to 4, the biopsy needle is used for a puncture sampling operation, such as a thyroid puncture operation, and comprises an inner needle assembly and an outer needle assembly, wherein the inner needle assembly comprises an inner needle holder 7 and an inner needle core 2, the outer needle assembly comprises an outer needle holder 3, an outer needle tube 1 and an automatic ejection assembly, and the automatic ejection assembly comprises a left cover plate 4, a right cover plate 9, a front support plate 8, a rear support plate 5 and a spring 6.
As shown in fig. 2, in the embodiment of the present invention, the elastic member is a spring 6, and the spring 6 is sleeved on the outer needle holder 3; one end of the inner needle base 7 facing the spring 6 is provided with two parallel extension rods 73 which extend outwards along the axial direction of the inner needle base 7; one end of the spring 6 is abutted against the hand position, the other end is connected with a supporting sheet, the supporting sheet is formed by abutting a front supporting sheet 8 and a rear supporting sheet 5 in an annular shape, the annular supporting sheet is sleeved on the outer needle base 3, and the supporting sheet is abutted against the free end of the extension rod 73. The elastic component adopts a spring 6 structure, and the elastic component is sleeved on the outer needle base 3, and the spring 6 has the advantages of long service life, stable resilience force and the like. The supporting sheet adopts a split structure, so that the assembling operation is convenient.
Fig. 6 is a structural schematic view of the outer needle holder; fig. 8 is a structural schematic view of the inner needle seat; as shown in fig. 6 and 8, the automatic ejection assembly further includes a stopper; the sealing piece is arranged at the tail end of the outer wall of the outer needle base 3, the spring 6 and the supporting sheet can move between a hand position and the sealing piece, two notches are formed in the sealing piece, and the free end of the extension rod 73 is abutted to the supporting sheet after penetrating through the two notches respectively; the free end of the extension rod 73 is provided with a hook, and the spring 6 is popped out to enable the hook to abut against the inner wall of the sealing part so as to prevent the inner needle base 7 from separating from the supporting sheet. Wherein, preferably, the sealing member is a locking thread 33 protruding from the outer wall of the outer needle holder 3, and the locking thread 33 facilitates locking connection with other medical instruments, for example, a syringe is locked with the outer needle holder 3 through the locking thread 33 during sampling. The blocking piece has a limiting effect on the spring 6, and when the spring 6 rebounds, the clamping hook on the extension rod 73 is clamped on the locking thread 33 and cannot move continuously, so that the inner needle base 7 is prevented from being separated from the stroke range. Wherein, in the stroke between hand position and the piece of blocking, spring 6 is in the compression state all the time, and spring 6 in the compression state can keep applying the resilience force to interior needle file 7, ensures to reach the purpose of drive interior needle file 7.
Fig. 7 is a schematic structural view of the left cover plate 4; as shown in fig. 7, the automatic pop-up assembly further includes a cylindrical cover plate, the cover plate is sleeved on the outer needle holder 3 between the hand position and the blocking member, a space is provided between the cover plate and the outer wall of the outer needle holder 3, and the spring 6 and the support sheet are provided in the space; the toggle button 41 is arranged on the cover plate, the cover plate is provided with a through hole, the toggle button 41 is provided with an elastic arm, one end of the elastic arm is connected with the side wall of the through hole, the other end of the elastic arm is provided with a toggle part 412 and a convex structure 411, the toggle part 412 is positioned on the outer side of the cover plate, and the convex structure 411 is positioned on the inner side of the cover plate; the support sheet is provided with a buckle which is clamped with the convex structure 411 so as to keep the spring 6 in a compressed state. The cover plate comprises a left cover plate 4 and a right cover plate 9, the toggle button 41 is arranged on the left cover plate 4 or the right cover plate 9, and the left cover plate 4 and the right cover plate 9 are butted to form a cylinder; the one end of the orientation hand position of left side apron 4 and right side apron 9 is equipped with the plug, is equipped with the jack that corresponds with the plug on the hand position, and the plug is pegged graft with the jack, makes the tip and the hand position of left side apron 4 and right side apron 9 form the butt. The cover plate adopts a split structure, so that the assembly operation is convenient.
As shown in fig. 1 and 3, a gap is arranged between the abutting surfaces of the left cover plate 4 and the right cover plate 9, so that the cover plates are provided with two guide channels parallel to the axial direction of the spring 6; the guide channel is communicated with the two notches on the blocking piece, the supporting piece is provided with two protruding sliding blocks and is respectively positioned in the guide channel, and the extension rod 73 is positioned in the guide channel and is abutted to the protruding sliding blocks. Extension rod 73 slides in the guide way, through setting up the guide way, makes things convenient for extension rod 73 and outer needle holder 3's high-speed joint, and simultaneously, protruding slider setting on the backing strip can avoid backing strip and the rotation of spring 6 in the guide way, reduces the probability that dial button 41 maloperation was opened.
When the biopsy needle provided by the embodiment of the invention is used, the assembled inner needle assembly and outer needle assembly are punctured to a designated position with the assistance of an imaging device, at this time, the inner needle seat 7 is popped outwards for a certain stroke under the action of the automatic popping assembly, so as to drive the inner needle core 2 to synchronously move outwards, fig. 5 is a structural schematic diagram of the end parts of the outer needle tube and the inner needle core, as shown in fig. 5, after the inner needle core 2 moves for a certain stroke, the needle tip part of the biopsy needle forms a sampling space 10, a doctor holds the biopsy needle by hand to perform reciprocating puncture (generally for more than 5 times of reciprocating), part of cells in a nodule are remained in the sampling space 10, extracts the biopsy needle, extracts the nodule cells in the sampling space 10, and performs medical analysis.
The following is a specific operation method of the biopsy needle provided by the embodiment of the present invention: firstly, the outer needle assembly and the inner needle assembly are assembled and combined, namely, the inner needle core 2 penetrates into the outer needle tube 1 through the luer connector 34 of the outer needle base 3, the extension rod 73 on the inner needle base 7 has certain deformation capacity, the extension rod 73 is pulled outwards, then the clamping hook of the extension rod 73 (the front clamping hook 71 is arranged on one extension rod 73, the rear clamping hook 72 is arranged on the other extension rod 73) firstly extends into the interval between the cover plate and the outer needle base 3 through the guide channel, and then the extension rod 73 is retained in the guide channel. 3 direction removal of the outside needle file of needle file 7 in the promotion, extension rod 73 free end butt is on the backing sheet, thrust is transmitted spring 6 by the backing sheet on, spring 6 is compressed under the thrust effect, and simultaneously, 3 direction removal of the outside needle file of backing sheet synchronous spring 6, when the backing sheet removes dial knob 41 position, buckle joint on the backing sheet is on dial knob 41's protruding structure 411, send "click" sound during the joint, at this moment, accomplish the interior needle subassembly and the outer assembling between the needle subassembly.
The inner needle assembly and the outer needle assembly are assembled to perform a puncture operation, during the operation, one hand of a doctor operates the ultrasonic probe, the thumb and the middle finger of the other hand respectively hold the left pressing position 31 and the right pressing position 32 of the outer needle base 3, the index finger is attached to the shifting part 412 of the shifting button 41, after the puncture position is determined under the guidance of the ultrasonic probe, the thumb and the middle finger hold the outer needle base 3, and the biopsy needle is punctured into a thyroid nodule of a patient along the needle point direction to enable the needle point to be located in the nodule. At this moment, the forefinger triggers toggle part 412, make toggle button 41's protruding structure 411 and the buckle separation of backing sheet, the spring 6 that is compressed kick-backs and promotes the backing sheet and remove, rebound force is used in extension rod 73, drive interior needle file 7 reverse movement, finally, pothook joint on extension rod 73 is on locking screw 33, interior needle file 7 stops to remove, this moment, because spring 6 still is in the rebound state, continue to apply the resilience force to the backing sheet, thereby make interior needle file 7 keep unchangeable in this position. The inner needle base 7 drives the inner needle core 2 to move reversely for a certain distance, so that a vacuum sampling space 10 is formed between the inner needle core 2 and the outer needle tube 1.
The doctor holds the outer needle base 3 by hand and sucks the cell in a reciprocating manner along the needle tip direction for at least 5 cycles, and the cell out of the thyroid nodule enters the sampling space 10 due to the reciprocating movement and the existence of negative pressure. At this point, the sampling operation is completed, the biopsy needle is pulled out of the thyroid gland, the extension rod 73 is pulled to separate the inner needle holder 7 from the outer needle holder 3, and then the luer connector 34 is connected to the syringe, so that the cells in the sampling space 10 are taken out and stored in a designated test container for testing. When the puncture is finished for the first time and needs to be performed for the second time or more, the puncture operation process is repeated.
The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, mixtures, sub-mixtures and substitutions may occur depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A disposable cytology biopsy needle comprises an inner needle component and an outer needle component, the outer needle component comprises an outer needle base (3), the inner needle component comprises an inner needle base (7), the middle part of the outer wall of the outer needle base (3) is provided with a convex hand position, the disposable cytology biopsy needle is characterized in that,
the puncture needle also comprises an automatic ejection assembly;
the automatic ejecting assembly comprises an elastic piece and a poking button (41) used for triggering the elastic piece to eject, one end of the elastic piece is abutted against the hand position, the other end of the elastic piece is abutted against the inner needle base (7), and the poking button (41) is connected with the outer needle base (3);
when the elastic piece is popped up, the inner needle base (7) is pushed to move towards the direction far away from the hand position, so that the inner needle core (2) moves into the outer needle tube (1), and a sampling space is formed between the end part of the outer needle tube (1) and the end part of the inner needle core (2) by the outer needle tube (1).
2. The disposable cytological biopsy needle of claim 1,
the elastic piece is a spring (6), and the spring (6) is sleeved on the outer needle base (3);
one end of the inner needle seat (7) facing the spring (6) is provided with two parallel extension rods (73) which extend outwards along the axial direction of the inner needle seat (7);
one end of the spring (6) is abutted against the hand position, the other end is connected with a supporting sheet, the supporting sheet is annularly sleeved on the outer needle seat (3), and the supporting sheet is abutted against the free end of the extension rod (73).
3. The disposable cytological biopsy needle according to claim 2, wherein the support sheets comprise a front support sheet (8) and a rear support sheet (5), the front support sheet (8) and the rear support sheet (5) being butted to form a ring-shaped structure.
4. The disposable cytological biopsy needle of claim 2, wherein the auto-eject assembly further comprises a stopper;
the sealing piece is arranged at the tail end of the outer wall of the outer needle base (3), the spring (6) and the supporting sheet can move between a hand position and the sealing piece, the sealing piece is provided with two notches, and the free end of the extension rod (73) is abutted to the supporting sheet after respectively penetrating through the two notches;
the free end of the extension rod (73) is provided with a hook, and the spring (6) is popped out to enable the hook to abut against the inner wall of the sealing part so as to prevent the inner needle seat (7) from separating from the supporting sheet.
5. The disposable cytological biopsy needle according to claim 4, characterized in that the spring (6) is always in compression during the stroke between the hand position and the blocking member.
6. The disposable cytological biopsy needle according to claim 4, wherein said blocking member is a locking thread (33) protruding from the outer wall of the outer hub (3).
7. The disposable cytological biopsy needle according to claim 4, wherein the auto-eject assembly further comprises a cylindrical cover plate, the cover plate is sleeved on the outer needle base (3) between the hand position and the blocking member, a space is arranged between the cover plate and the outer wall of the outer needle base (3), and the spring (6) and the support sheet are arranged in the space;
the toggle button (41) is arranged on the cover plate, a through hole is formed in the cover plate, the toggle button (41) is provided with an elastic arm, one end of the elastic arm is connected with the side wall of the through hole, a toggle part (412) and a protruding structure (411) are arranged at the other end of the elastic arm, the toggle part (412) is located on the outer side of the cover plate, and the protruding structure (411) is located on the inner side of the cover plate;
the support sheet is provided with a buckle which is clamped with the convex structure (411) so as to keep the spring (6) in a compressed state.
8. The disposable cytological biopsy needle according to claim 7, wherein the cover plates comprise a left cover plate (4) and a right cover plate (9), the toggle button (41) is arranged on the left cover plate (4) or the right cover plate (9), and the left cover plate (4) and the right cover plate (9) are butted to form a cylinder shape;
the one end of orientation hand position of left side apron (4) and right side apron (9) is equipped with the plug, is equipped with the jack that corresponds with the plug on the hand position, and the plug is pegged graft with the jack, makes the tip and the hand position of left side apron (4) and right side apron (9) form the butt.
9. The disposable cytological biopsy needle according to claim 8, wherein a space is provided between the abutting faces of the left cover plate (4) and the right cover plate (9) so that the cover plates have two guide channels parallel to the axial direction of the spring;
the guide channel is communicated with the two notches on the blocking piece, the supporting piece is provided with two protruding sliding blocks and is respectively positioned in the guide channel, and the extension rod (73) is positioned in the guide channel and is abutted against the protruding sliding blocks.
10. The disposable cytological biopsy needle according to any one of claims 1 to 9, wherein the end of the outer needle hub remote from the outer needle cannula is a luer fitting (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010285706.2A CN111358506A (en) | 2020-04-13 | 2020-04-13 | Disposable cytology biopsy needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010285706.2A CN111358506A (en) | 2020-04-13 | 2020-04-13 | Disposable cytology biopsy needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111358506A true CN111358506A (en) | 2020-07-03 |
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ID=71199474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010285706.2A Pending CN111358506A (en) | 2020-04-13 | 2020-04-13 | Disposable cytology biopsy needle |
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|---|---|
| CN (1) | CN111358506A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113855097A (en) * | 2021-09-28 | 2021-12-31 | 黄文侨 | Improved biopsy needle |
| WO2022104533A1 (en) * | 2020-11-17 | 2022-05-27 | 苏州市立普医疗科技有限公司 | Puncture needle having inner and outer needle chamfer surfaces that are aligned |
| WO2022126651A1 (en) * | 2020-12-18 | 2022-06-23 | 苏州市立普医疗科技有限公司 | Biopsy needle and full-automatic biopsy needle |
| CN115211905A (en) * | 2022-07-11 | 2022-10-21 | 经方精密医疗（深圳）有限公司 | Biopsy needle |
-
2020
- 2020-04-13 CN CN202010285706.2A patent/CN111358506A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022104533A1 (en) * | 2020-11-17 | 2022-05-27 | 苏州市立普医疗科技有限公司 | Puncture needle having inner and outer needle chamfer surfaces that are aligned |
| WO2022126651A1 (en) * | 2020-12-18 | 2022-06-23 | 苏州市立普医疗科技有限公司 | Biopsy needle and full-automatic biopsy needle |
| CN113855097A (en) * | 2021-09-28 | 2021-12-31 | 黄文侨 | Improved biopsy needle |
| CN115211905A (en) * | 2022-07-11 | 2022-10-21 | 经方精密医疗（深圳）有限公司 | Biopsy needle |
| WO2024012037A1 (en) * | 2022-07-11 | 2024-01-18 | 经方精密医疗（深圳）有限公司 | Biopsy needle |
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