CN112790796B - Automatic percussion formula living tissue sampling needle - Google Patents
Automatic percussion formula living tissue sampling needle Download PDFInfo
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- CN112790796B CN112790796B CN202011637162.8A CN202011637162A CN112790796B CN 112790796 B CN112790796 B CN 112790796B CN 202011637162 A CN202011637162 A CN 202011637162A CN 112790796 B CN112790796 B CN 112790796B
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- needle
- handle
- trigger
- fixing seat
- sampling
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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
Abstract
The invention provides an automatic-triggering living tissue sampling needle, which comprises a sampling needle head and a sampling needle handle, wherein the sampling needle head comprises an outer needle and an inner needle, the front end of the inner needle is provided with a sampling port, and a sufficient living tissue sample can be obtained by matching with the outer needle; the safety baffle is arranged, so that a button of the firing handle can be blocked, the accidental triggering can be prevented, meanwhile, the safety baffle can be shifted to different gears, and the two-stage firing of the inner needle and the outer needle can be realized; the lever handle and the trigger buckle plate are arranged and used in a matched manner, so that the outer needle fixing seat and the inner needle fixing seat can be pulled backwards until the outer needle fixing seat and the inner needle fixing seat are clamped by the first lock catch and the second lock catch, and therefore, a spring sleeved on the outer side of the outer needle and the outer side of the inner needle is in a compressed state, and the outer needle and the inner needle are in a state to be triggered; the trigger handle button can be linked with the first lock catch and the second lock catch, and the triggering of the outer needle and the inner needle can be realized only by pressing the trigger handle button; set up toggle switch, when the trigger did not use, in order to prevent that the mistake from touching and be convenient for accomodate, can lock the trigger.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an automatic-triggering living tissue sampling needle.
Background
For some diseases, it is often necessary to take a sample of a biopsy from a lesion for examination. Sampling needles are commonly used clinically to sample biopsies of unknown material in the upper and lower digestive tracts, respiratory tract and other systems for pathological analysis.
In general, in the process of operating the sampling needle, an operator needs to operate the instrument with two hands, one hand holds the instrument, the other hand completes sampling operation, the operation is complicated, the sampling needle operated with one hand is also available in the prior art, but suction operation is needed, and negative pressure damage may be caused to a patient; or a sampling operation using barbs, the biopsy sample may be insufficient to allow biopsy.
The biopsy sampling needle in the prior art mainly has the following technical problems:
1. the prior sampling needle is inconvenient to operate or insufficient in the number of biopsy samples to be taken;
2. the automatic firing type biopsy sampling needle is easy to touch by mistake, thereby causing unnecessary injury to a patient;
3. the triggering state of the inner needle and the outer needle needs to be realized by a pressing spring, so that a mechanism convenient for pressing the spring is needed;
4. how to realize the automatic firing of the sampling needle by adjusting an external mechanism is an urgent problem to be solved;
5. when the trigger is not used, the trigger needs to be locked in order to prevent accidental touch and facilitate storage.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an automatic-firing type living tissue sampling needle.
In order to achieve the purpose, the invention adopts the following technical scheme:
an automatic firing type living tissue sampling needle comprises a sampling needle head and a sampling needle handle, wherein one end of the sampling needle head is arranged in the sampling needle handle, the sampling needle head comprises an outer needle and an inner needle, the outer needle is sleeved outside the inner needle, and the front end of the inner needle is provided with a sampling port; an outer needle fixing seat is sleeved on the outer side of the outer needle, an inner needle fixing seat is arranged on the outer side of the inner needle, a first lock catch is arranged below the outer needle fixing seat, and a second lock catch is arranged below the inner needle fixing seat; a firing handle button is arranged at the rear end of the sampling needle handle, and a safety baffle is arranged above the firing handle button; a lever handle is arranged on the outer side of the sampling needle handle, a trigger buckle plate is further arranged on the inner side of the sampling needle handle, and the lever handle is matched with the trigger buckle plate for use; the outer side of the outer needle fixing seat is also sleeved with a toggle switch.
Preferably, the inner needle is solid, the outer needle is hollow, the cross section of the sampling opening is trapezoidal, living tissue to be sampled can be sunk into the sampling opening due to tension of human tissue, the inner diameter of the outer needle is slightly larger than the outer diameter of the inner needle, the living tissue sunk into the sampling opening is cut off after being triggered, sampling is achieved, the outer surface of the outer needle is further provided with a score line, and the depth of the sampling needle inserted into a human body is convenient to observe and control.
Preferably, the outer needle fixing seat comprises a clamping plate and an outer needle sleeve, the clamping plate and the outer needle sleeve are integrally formed, and the outer needle sleeve is further provided with a mounting strip and a mounting block, so that the outer needle fixing seat can conveniently penetrate through an outer needle fixing seat channel in the toggle switch and is stably arranged in the sampling needle handle; the clamping plate is matched with the first lock catch, when the trigger is pulled, the sliding clamping head of the first lock catch is blocked at the front end of the clamping plate, so that a spring sleeved on the outer needle is in a pressing state, and the outer needle enters a state to be triggered.
Preferably, a clamp and a port are arranged on one side of the inner needle fixing seat, and an inner needle hole is formed in the center of the inner needle fixing seat; the card and the opening are matched with the second lock catch for use, when the trigger is pulled, the sliding clamping head of the second lock catch is clamped in the card and the opening, so that the spring sleeved on the inner needle is in a pressing state, and the inner needle enters a state to be triggered.
Preferably, all the cover is equipped with the torsional spring on first hasp and the second hasp, first hasp and second hasp one side are provided with the torsional spring card, when pressing the percussion handle button, first hasp and second hasp of linkage handle extrusion, and the torsional spring that sets up on the hasp is compressed, first hasp and second hasp upper end all are provided with the slip joint head, and the torsional spring is rotated by first hasp and second hasp after the compression, and the slip joint head lapse no longer blocks outer needle fixing base and inner needle fixing base to realize the percussion of inner needle and outer needle.
Preferably, the trigger handle button includes manual button and linkage handle, the linkage handle is the echelonment, and it is narrower to keep away from manual button one end, is close to manual button one end broad, uses with first hasp and the cooperation of second hasp, keeps away from manual button one end and is used for promoting first hasp, is close to manual button one end and is used for promoting the second hasp to the trigger of needle and outer needle in the realization.
Preferably, the safety baffle comprises a toggle handle and a baffle body, a rectangular notch is formed in the lower end of the baffle body, clamping pieces are arranged on two sides of the notch respectively, the clamping pieces are triangular, three sides of each clamping piece are arc-shaped, and when the safety baffle is pressed to the L position, the baffle body completely blocks the button of the toggle handle, locks the button of the toggle handle and prevents mistaken triggering; when the safety baffle is pressed to the position I, the clamping sheet blocks the button of the triggering handle, so that the sampling needle can only trigger the inner needle, and the outer needle is locked; when the safety baffle is pressed to the position II, the clamping sheet no longer blocks the trigger handle button, and the inner needle and the outer needle of the sampling needle can be triggered; from this, press to "I" position with the safety shield earlier, the needle in the percussion, press to "II" position with the safety shield again, the outer needle of percussion can realize living the tissue sample.
Preferably, a trigger hole is formed in the lever handle, the trigger hole is a rounded rectangle with two semicircular ends, the trigger hole is matched with the trigger post for use, when the lever handle is pulled upwards, the trigger post slides backwards in the trigger hole to drive the trigger pull handle to move backwards, the outer needle fixing seat buckle drives the outer needle fixing seat to move backwards, the inner needle fixing seat buckle drives the inner needle fixing seat to move backwards until the inner needle fixing seat is clamped by the first buckle and the second buckle, and the inner needle and the outer needle are in a state to be triggered.
Preferably, the trigger button handle is provided with a trigger column which is matched with the trigger hole for use, the front end of the trigger button handle is provided with an outer needle fixing seat buckle, and the middle part of the trigger button handle is provided with an inner needle fixing seat buckle.
Preferably, central symmetry is provided with about the toggle switch and stirs the buckle, toggle switch central point puts and is provided with outer needle fixing base passageway, stirs the buckle and can rotate, blocks lever handle, and maloperation causes the sampling needle to be in and treats the percussion state when preventing not using the sampling needle.
Compared with the prior art, the invention has the beneficial effects that:
1. the front end of the inner needle is provided with a sampling port which is matched with the outer needle for use so as to obtain a sufficient amount of living tissue sample;
2. the safety baffle is arranged, so that a button of the firing handle can be blocked, the accidental triggering can be prevented, meanwhile, the safety baffle can be shifted to different gears, and the two-stage firing of the inner needle and the outer needle can be realized;
3. the lever handle and the trigger pinch plate are arranged and used in a matched manner, the outer needle fixing seat and the inner needle fixing seat can be pulled backwards until the outer needle fixing seat and the inner needle fixing seat are clamped by the first lock catch and the second lock catch, so that the spring sleeved outside the outer needle and the inner needle is in a compressed state, and the outer needle and the inner needle are in a state to be triggered;
4. the trigger handle button can be linked with the first lock catch and the second lock catch, and the triggering of the outer needle and the inner needle can be realized only by pressing the trigger handle button;
5. set up toggle switch, when the trigger did not use, in order to prevent that the mistake from touching and be convenient for accomodate, can lock the trigger.
Drawings
FIG. 1 is a schematic view showing the entire structure of a trigger buckle according to embodiment 1 of the present invention;
FIG. 2 is a schematic view showing the entire construction of a trigger-free buckle according to embodiment 1 of the present invention;
FIG. 3 is a schematic view of the outer needle structure of embodiment 1 of the present invention;
FIG. 4 is a schematic view of the inner needle structure of embodiment 1 of the present invention;
FIG. 5 is a schematic view of the outer needle holder in accordance with embodiment 1 of the present invention;
FIG. 6 is a schematic view of the inner needle holder structure according to embodiment 1 of the present invention;
fig. 7 is a schematic structural view of the first lock catch and the second lock catch according to embodiment 1 of the present invention;
FIG. 8 is a schematic structural view of a firing bar button according to embodiment 1 of the present invention;
FIG. 9 is a schematic structural view of a safety shield in accordance with embodiment 1 of the present invention;
FIG. 10 is a schematic view showing the structure of a lever handle according to embodiment 1 of the present invention;
FIG. 11 is a schematic structural view of a trigger buckle according to embodiment 1 of the present invention;
fig. 12 is a schematic structural view of a toggle switch in embodiment 1 of the present invention.
Detailed Description
In order to further understand the objects, structures, features, and functions of the present invention, the following embodiments are described in detail.
In order to achieve the purpose, the invention adopts the following technical scheme:
referring to fig. 1, 2 and 4, an automatic-percussion biopsy needle comprises a needle head 1 and a needle handle 2, wherein one end of the needle head 1 is arranged in the needle handle 2, the needle head 1 comprises an outer needle 3 and an inner needle 4, the outer needle 3 is sleeved outside the inner needle 4, and a sampling port 402 is arranged at the front end of the inner needle 4; an outer needle fixing seat 301 is sleeved on the outer side of the outer needle 3, an inner needle fixing seat 401 is arranged on the outer side of the inner needle, a first lock catch 5 is arranged below the outer needle fixing seat 301, and a second lock catch 6 is arranged below the inner needle fixing seat 401; a trigger handle button 7 is arranged at the rear end of the sampling needle handle 2, and a safety baffle 8 is arranged above the trigger handle button 7; a lever handle 9 is arranged on the outer side of the sampling needle handle 2, a trigger buckle plate 10 is further arranged on the inner side of the sampling needle handle 2, and the lever handle 9 is matched with the trigger buckle plate 10 for use; the outer side of the outer needle fixing seat 301 is also sleeved with a toggle switch 11.
Referring to fig. 3 and 4, the inner needle 4 is solid, the outer needle 3 is hollow, the section of the sampling port 402 is trapezoidal, due to tension of human tissue, living tissue to be sampled can be sunk into the sampling port 402, the inner diameter of the outer needle 3 is slightly larger than the outer diameter of the inner needle 4, the living tissue sunk into the sampling port 402 is cut off after being fired, so that sampling is realized, and the outer surface of the outer needle 3 is also provided with a score line 302, so that the depth of the sampling needle inserted into the human body can be observed and controlled conveniently.
Referring to fig. 5, the outer needle holder 301 includes a fastening plate 311 and an outer needle sheath 312, the fastening plate 311 is integrally formed with the outer needle sheath 312, and the outer needle sheath 312 is further provided with a mounting bar 313 and a mounting block 314, so as to conveniently pass through an outer needle holder passage 1102 in the toggle switch 11 and be stably disposed in the sampling needle handle 2; the clamping plate 311 is matched with the first lock catch 5 for use, when the trigger is pulled, the sliding clamping head 502 of the first lock catch 5 is blocked at the front end of the clamping plate 311, so that the spring sleeved on the outer needle 3 is in a pressing state, and the outer needle 3 enters a state to be triggered.
Referring to fig. 6, a clamping opening 411 is formed at one side of the inner needle fixing seat 401, and an inner needle hole 412 is formed in the center of the inner needle fixing seat 401; the card and the mouth 411 are matched with the second lock catch 6 for use, when the trigger is pulled, the sliding clamping head 502 of the second lock catch 6 is clamped in the card and the mouth 411, so that the spring sleeved on the inner needle 4 is in a pressing state, and the inner needle 4 enters a state to be triggered.
Referring to fig. 7, the first latch 5 and the second latch 6 are both sleeved with a torsion spring, one side of the first latch 5 and one side of the second latch 6 are provided with a torsion spring clamping piece 501, when the trigger handle button 7 is pressed, the linkage handle 702 presses the first latch 5 and the second latch 6, the torsion springs arranged on the latches are compressed, the upper ends of the first latch 5 and the second latch 6 are both provided with a sliding clamping head 502, after the torsion spring is compressed, the first latch 5 and the second latch 6 rotate, the sliding clamping head 502 slides downwards, and the outer needle fixing seat 301 and the inner needle fixing seat 401 are not blocked, so that the triggering of the inner needle 4 and the outer needle 3 is realized.
Referring to fig. 8, the trigger handle button 7 includes a manual button 701 and a linkage handle 702, the linkage handle 702 is stepped, one end away from the manual button 701 is narrow, one end close to the manual button 701 is wide, and is used in cooperation with the first latch 5 and the second latch 6, one end away from the manual button 01 is used for pushing the first latch 5, and one end close to the manual button 701 is used for pushing the second latch 6, so as to implement triggering of the inner needle 4 and the outer needle 3.
Referring to fig. 9, the safety baffle 8 includes a toggle handle 801 and a baffle body 802, a rectangular notch is provided at the lower end of the baffle body 802, engaging pieces 803 are respectively provided at two sides of the notch, the engaging pieces 803 are triangular, three sides of each engaging piece 803 are arc-shaped, when the safety baffle 8 is pressed to the "L" position, the baffle body 802 completely blocks the trigger handle button 7, the trigger handle button 7 is locked, and the accidental triggering is prevented; when the safety baffle 8 is pressed to the position I, the clamping piece 803 blocks the trigger handle button 7, so that the sampling needle can only trigger the inner needle 4, and the outer needle 3 is locked; when the safety baffle 8 is pressed to the position II, the clamping piece 803 no longer blocks the trigger handle button 7, and the inner needle and the outer needle of the sampling needle can be triggered; from this, press insurance baffle 8 earlier to "I" position, trigger interior needle 4, press insurance baffle 8 to "II" position again, trigger outer needle 3, can realize living the tissue sample.
Referring to fig. 10, a trigger hole 901 is formed in the lever handle 9, the trigger hole 901 is a rounded rectangle with semicircular two ends, the trigger hole 901 is used in cooperation with a trigger post 1001, when the lever handle 9 is pulled up, the trigger post 1001 slides backwards in the trigger hole 901 to drive the trigger handle 10 to move backwards, the outer needle fixing base buckle 1002 drives the outer needle fixing base 301 to move backwards, and the inner needle fixing base buckle 1003 drives the inner needle fixing base 401 to move backwards until being clamped by the first buckle 5 and the second buckle 6, so that the inner needle 4 and the outer needle 3 are in a state to be triggered.
Referring to fig. 11, a trigger post 1001 is disposed on the trigger handle 10 and is used in cooperation with the trigger hole 901, an outer needle fixing seat buckle 1002 is disposed at the front end of the trigger handle 10, and an inner needle fixing seat buckle 1003 is disposed in the middle of the trigger handle.
Referring to fig. 12, toggle buckles 1101 are symmetrically arranged at the upper and lower centers of the toggle switch 11, an outer needle fixing seat passage 1102 is arranged at the center of the toggle switch 11, the toggle buckles 1101 can rotate to clamp the lever handle 9, so as to prevent the sampling needle from being in a state to be triggered due to misoperation when the sampling needle is not used.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.
Claims (8)
1. The utility model provides an automatic percussion formula biopsy needle, includes sample needle syringe needle and sample needle handle, sample needle syringe needle one end sets up in the sample needle handle, its characterized in that: the sampling needle head comprises an outer needle and an inner needle, the outer needle is sleeved outside the inner needle, and the front end of the inner needle is provided with a sampling port; an outer needle fixing seat is sleeved on the outer side of the outer needle, an inner needle fixing seat is arranged on the outer side of the inner needle, a first lock catch is arranged below the outer needle fixing seat, and a second lock catch is arranged below the inner needle fixing seat; a firing handle button is arranged at the rear end of the sampling needle handle, and a safety baffle is arranged above the firing handle button; a lever handle is arranged on the outer side of the sampling needle handle, a trigger buckle plate is further arranged on the inner side of the sampling needle handle, and the lever handle is matched with the trigger buckle plate for use; a toggle switch is sleeved on the outer side of the outer needle fixing seat; the firing handle button comprises a manual button and a linkage handle, the linkage handle is in a step shape, one end far away from the manual button is narrow, one end close to the manual button is wide, and the linkage handle is matched with the first lock catch and the second lock catch for use, the end far away from the manual button pushes the first lock catch, and the end close to the manual button is used for pushing the second lock catch;
the safety baffle comprises a shifting handle and a baffle body, a rectangular notch is formed in the lower end of the baffle body, clamping pieces are arranged on two sides of the notch respectively, and the clamping pieces are triangular with three arc-shaped sides; when the safety baffle is pressed to the L position, the baffle body completely blocks the trigger handle button, the trigger handle button is locked, and the trigger is prevented from being touched by mistake; when the safety baffle is pressed to the position I, the clamping sheet blocks the button of the triggering handle, so that the sampling needle can only trigger the inner needle, and the outer needle is locked; when the safety baffle is pressed to the position II, the clamping sheet no longer blocks the trigger handle button, and the inner needle and the outer needle of the sampling needle can be triggered; from this, press to "I" position with the safety shield earlier, the needle in the percussion, press to "II" position with the safety shield again, the outer needle of percussion can realize living the tissue sample.
2. The self-triggered biopsy needle of claim 1, wherein: the interior needle is solid, outer needle is hollow, the sample connection cross-section is trapezoidal, outer needle internal diameter slightly is greater than interior needle external diameter, outer needle surface still is provided with the score line mark.
3. The self-tapping living tissue sampling needle of claim 1 wherein: the outer needle fixing seat comprises a clamping plate and an outer needle sleeve, the clamping plate and the outer needle sleeve are integrally formed, and the outer needle sleeve is further provided with a mounting strip and a mounting block.
4. The self-triggered biopsy needle of claim 1, wherein: the inner needle fixing seat is characterized in that a clamp and a port are arranged on one side of the inner needle fixing seat, and an inner needle hole is formed in the center of the inner needle fixing seat.
5. The self-triggered biopsy needle of claim 1, wherein: all the cover is equipped with the torsional spring on first hasp and the second hasp, first hasp and second hasp one side are provided with the torsional spring card, first hasp and second hasp upper end all are provided with the slip joint head.
6. The self-triggered biopsy needle of claim 1, wherein: the lever handle is provided with a trigger hole and a bolt hole, and the trigger hole is a rounded rectangle with two semicircular ends.
7. The self-triggered biopsy needle of claim 6, wherein: the trigger is characterized in that a trigger post is arranged on the trigger pull handle and matched with the trigger hole for use, an outer needle fixing seat buckle is arranged at the front end of the trigger pull handle, and an inner needle fixing seat buckle is arranged in the middle of the trigger pull handle.
8. The self-triggered biopsy needle of claim 1, wherein: toggle buckles are symmetrically arranged on the upper center and the lower center of the toggle switch, and an outer needle fixing seat channel is arranged in the center of the toggle switch.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020105864621 | 2020-06-24 | ||
| CN202010586462 | 2020-06-24 |
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| Publication Number | Publication Date |
|---|---|
| CN112790796A CN112790796A (en) | 2021-05-14 |
| CN112790796B true CN112790796B (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011637162.8A Active CN112790796B (en) | 2020-06-24 | 2020-12-31 | Automatic percussion formula living tissue sampling needle |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113907802B (en) * | 2021-08-27 | 2024-03-22 | 广州晟威医疗器械有限公司 | Full-automatic biopsy needle capable of preventing false triggering |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104887276B (en) * | 2015-05-11 | 2017-08-25 | 复旦大学附属肿瘤医院 | Adjustable sampling device for biopsy |
| CN108392229A (en) * | 2018-04-12 | 2018-08-14 | 上海埃斯埃医械塑料制品有限公司 | A kind of cell taking gun obtaining soft tissue |
| 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 |
| CN111067578B (en) * | 2020-01-17 | 2023-07-18 | 普昂(杭州)医疗科技有限公司 | Biopsy device of safe puncture |
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