CN112168229A - Biopsy device - Google Patents
Biopsy device Download PDFInfo
- Publication number
- CN112168229A CN112168229A CN202011163042.9A CN202011163042A CN112168229A CN 112168229 A CN112168229 A CN 112168229A CN 202011163042 A CN202011163042 A CN 202011163042A CN 112168229 A CN112168229 A CN 112168229A
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- holder
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- 238000001574 biopsy Methods 0.000 title claims abstract description 42
- 238000010304 firing Methods 0.000 claims abstract description 53
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000000306 component Substances 0.000 claims 1
- 239000008358 core component Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 6
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 210000004177 elastic tissue Anatomy 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 210000005075 mammary gland Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013188 needle biopsy Methods 0.000 description 1
- 210000002307 prostate Anatomy 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 210000001685 thyroid gland Anatomy 0.000 description 1
- 210000001519 tissue Anatomy 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
-
- 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
- A61B10/0241—Pointed or sharp biopsy instruments for prostate
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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 discloses a biopsy device which comprises an outer shell (1), an inner support (2), a needle core assembly (3), a needle tube assembly (4), a firing assembly (5) and a forward distance adjusting key (6), wherein the forward distance adjusting key (6) is positioned at a first forward position, the firing assembly (5) is pressed forward, and both a needle core (301) and a needle tube (401) can advance for a first set distance; when the advance distance adjusting key (6) is located at a second advance position, the firing assembly (5) is pressed forwards, and the needle core (301) and the needle tube (401) can both advance for a second set distance. The biopsy device not only can realize the adjustment of the puncture depth, but also can realize the step firing or the one-step firing of the needle core and the needle tube.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a biopsy device.
Background
As an important field of needle biopsy, the disposable full-automatic biopsy device is widely applied to biopsy of soft tissue parts such as liver, kidney, prostate, mammary gland, lung, thyroid and the like, and the conventional disposable full-automatic biopsy device cannot adjust the puncture depth and change the sample length. The needle core and the needle tube can not be triggered step by step, and doctors often need to adjust the puncture depth and change the length of a sample according to the size of a focus in actual use. In some biopsies, CT or B-ultrasonic examination is also required after the core needle is fired, whether the position of the sampling groove is correct or not is judged, and then the needle tube is fired to complete sampling, namely the core needle and the needle tube are fired step by step.
Disclosure of Invention
In order to adjust the puncture biopsy depth, the invention provides a biopsy device which not only can realize the adjustment of the puncture depth, but also can realize the step firing or one-step firing of a needle core and a needle tube.
The technical scheme adopted by the invention for solving the technical problems is as follows: a biopsy device, comprising:
an outer housing having a cylindrical structure;
the inner support is sleeved in the outer shell;
the needle core assembly comprises a needle core, a needle core seat and a needle core seat spring which are sequentially connected from front to back, and the needle core seat is also connected with a needle core key;
the needle tube assembly comprises a needle tube, a needle tube seat and a needle tube seat spring which are sequentially connected from front to back, and the needle tube seat is also connected with a needle tube key;
the firing assembly comprises a front firing key, a connecting strip and a rear firing key which are sequentially connected from front to back;
the advancing distance adjusting key is positioned on the outer shell and can move along the circumferential direction of the outer shell;
when the needle core key and the needle tube key are pressed backwards, the needle core assembly and the needle tube assembly can be in a state to be launched;
when the forward-advance-distance adjusting key is located at a first forward position and the stylet assembly and the needle tube assembly are in a state to be launched, the forward-launch key or the backward-launch key is pressed forwards, and the stylet and the needle tube can both advance by a first set distance;
when the advancing distance adjusting key is located at the second advancing position and the stylet assembly and the needle tube assembly are both in a state to be launched, the front launching key or the rear launching key is pressed forwards, and the stylet and the needle tube assembly can both advance for a second set distance.
The invention has the beneficial effects that:
1. the utility model is flexible and convenient, and the utility model is convenient,
2. the adjustment of the puncture depth is realized,
3. the step firing or the one-step firing of the needle core and the needle tube is realized.
4. The whole appearance adopts the human engineering design, convenient operation, sense of touch comfortable.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
FIG. 1 is a front view of a biopsy device according to the present invention.
FIG. 2 is a left side view of a biopsy device according to the present invention.
FIG. 3 is a right perspective view of a biopsy device according to the present invention.
FIG. 4 is a schematic left side perspective view of a biopsy device according to the present invention.
Fig. 5 is a sectional view taken along a-a in fig. 1.
FIG. 6 is a cross-sectional view taken along A-A in FIG. 1 of a biopsy device of the present invention in a ready to fire condition.
FIG. 7 is a cross-sectional view taken along A-A in FIG. 1 with the advancement distance adjustment key in a second, advanced position and the biopsy device in a fired state.
FIG. 8 is a cross-sectional view taken along the line B-B in FIG. 1 of a biopsy device of the present invention in a ready to fire condition.
FIG. 9 is a cross-sectional view taken along the line C-C in FIG. 2 of a biopsy device of the present invention in a ready to fire condition.
FIG. 10 is a schematic internal perspective view of a biopsy device according to the present invention.
Fig. 11 is a front view of the advance distance adjusting key.
Fig. 12 is a front view of the function adjusting key.
FIG. 13 is a partial perspective view of the firing assembly.
Fig. 14 is a schematic view of the function adjusting key in the lock position.
Fig. 15 is a schematic view of the function adjusting key at the step firing position.
Fig. 16 is a schematic view of the function adjustment key in a fully automatic firing position.
1. An outer housing; 2. an inner support; 3. a stylet assembly; 4. a needle cannula assembly; 5. a firing assembly; 6. a forward distance adjustment key; 7. a function adjusting key;
201. a needle tube seat clamping groove; 202. a needle core seat clamping groove;
301. a needle core; 302. a needle core seat; 303. a needle core holder spring; 304. a stylet key;
401. a needle tube; 402. a needle tube base; 403. a needle tube seat spring; 404. the needle tube is pressed;
501. a front launch key; 502. a connecting strip; 503. a post-launch key; 504. an elastic strip;
601. a needle tube seat stop block; 602. a needle core seat stop block;
701. a shift knob;
3021. a needle core seat clamping block;
4021. a needle tube seat clamping block;
5021. a needle tube seat top block; 5022. a needle core seat top block; 5023. a locking position projection; 5024. the location bumps are emitted step by step.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
A biopsy device, the biopsy device comprising:
an outer casing 1 having a cylindrical structure;
the inner support 2 is sleeved in the outer shell 1;
the stylet assembly 3 comprises a stylet 301, a stylet holder 302 and a stylet holder spring 303 which are sequentially connected from front to back, the stylet holder 302 is also connected with a stylet key 304, and the stylet key 304 is positioned at the front part of the outer shell 1;
the needle tube assembly 4 comprises a needle tube 401, a needle tube seat 402 and a needle tube seat spring 403 which are sequentially connected from front to back, the needle tube seat 402 is also connected with a needle tube key 404, and the needle tube key 404 is positioned at the front part of the outer shell 1;
the firing assembly 5 comprises a front firing key 501, a connecting strip 502 and a rear firing key 503 which are fixedly connected from front to back in sequence, wherein the front firing key 501, the connecting strip 502 and the rear firing key 503 synchronously move; the front emission key 501 is located at the front of the outer housing 1, and the rear emission key 503 is located at the rear end of the outer housing 1;
an advance distance adjusting key 6 located on the outer shell 1, the advance distance adjusting key 6 being capable of moving along the circumferential direction of the outer shell 1;
when the stylet button 304 and the needle tube button 404 are pressed backwards, both the stylet assembly 3 and the needle tube assembly 4 can be in a state to be launched;
when the forward distance adjusting key 6 is located at a first forward position and the stylet assembly 3 and the needle tube assembly 4 are both in a state to be launched, the forward launch key 501 or the rear launch key 503 is pressed forward, and both the stylet 301 and the needle tube 401 can advance a first set distance;
when the forward-movement-distance adjusting key 6 is located at the second forward position and the stylet assembly 3 and the needle cannula assembly 4 are both in the state to be fired, the stylet 301 and the needle cannula 401 can both move forward by the second set distance by pressing the forward-firing key 501 or the rear-firing key 503 forward, as shown in fig. 1 to 13.
The inner support 2 comprises a needle tube seat clamping groove 201 and a needle core seat clamping groove 202 which are arranged in the front and back, a needle tube seat 402 and a needle core seat 302 are arranged in the inner support 2 at intervals in the front and back, a needle tube seat clamping block 4021 is arranged at the rear part of the needle tube seat 402, and a needle core seat clamping block 3021 is arranged at the rear part of the needle core seat 302.
Needle hub locking piece 4021 is engageable with needle hub locking groove 201, and both ends of needle hub spring 403 are connected to needle hub 402 and needle hub locking groove 201, respectively. The needle core seat clamping block 3021 can be clamped with the needle core seat clamping groove 202, and two ends of the needle core seat spring 303 are respectively connected with the needle core seat 302 and the needle core seat clamping groove 202.
The inner side of the connecting bar 502 comprises a needle tube seat top block 5021 and a needle core seat top block 5022 which are arranged in the front-back direction, the needle core seat top block 5022 can push a needle core seat clamping block 3021 out of a needle core seat clamping groove 202, and the needle tube seat top block 5021 can push a needle tube seat clamping block 4021 out of a needle tube seat clamping groove 201. The needle core 301 is bonded and fixed to the needle core holder 302, and the needle tube 401 is bonded and fixed to the needle tube holder 402.
When the core assembly 3 is in the initial state (position) or the fired state (position), the core holder block 3021 is disengaged from the core holder notch 202 and the core holder spring 303 is in a compressed state. When the needle assembly 4 is in the initial state (position) or the fired state (position), the needle hub lock 4021 disengages from the needle hub lock 201, and the needle hub spring 403 is also under compression.
When the needle core assembly 3 is in a to-be-launched state (position), the needle core holder clamping block 3021 is clamped with the needle core holder clamping groove 202, and the needle core holder spring 303 is in a compression limit state. When the syringe assembly 4 is in the ready-to-fire state (position), the syringe holder locking block 4021 is locked with the syringe holder locking groove 201, and the syringe holder spring 403 is also in the compression limit state.
When the forward distance adjusting key 6 is located at the first forward position and the stylet assembly 3 and the needle tube assembly 4 are both in a state to be launched, the forward launch key 501 or the rear launch key 503 is pressed forward, the stylet 301 and the needle tube 401 are advanced by a first set distance, the stylet 301, the stylet holder 302, the stylet holder spring 303, the needle tube 401, the needle holder 402 and the needle holder spring 403 are all returned to the initial positions, and the second set distance is smaller than the first set distance.
In this embodiment, the advance distance adjusting key 6 is located at the front portion of the outer shell 1, the advance distance adjusting key 6 is clamped with the outer shell 1, the second advance position and the first advance position are arranged left and right, the first set distance is 22mm, and the second set distance is 15 mm.
And the outer shell 1 is provided with a mark (22mm) of the first set distance and a mark (15mm) of the second set distance. The indication (22mm) of the first set distance corresponds to the first set distance, and the indication (15mm) of the second set distance corresponds to the second set distance.
When the forward distance adjusting key 6 is located at the first forward position and the stylet assembly 3 and the needle tube assembly 4 are both in a state to be launched, the forward launching key 501 or the backward launching key 503 is pressed forward, and the stylet 301 and the needle tube 401 advance 22 mm; when the forward distance adjusting key 6 is located at the second forward position and both the stylet assembly 3 and the needle cannula assembly 4 are in the state to be fired, the stylet 301 and the needle cannula 401 will advance 15mm by pressing the forward firing key 501 or the rear firing key 503 forward.
In this embodiment, the inner side of the forward distance adjusting key 6 includes a syringe holder stopper 601 and a syringe holder stopper 602 arranged in front and back, and the specific values of the first set distance and the second set distance can be determined according to the actual use requirement, the size of the part and the limited number of experiments.
The stylet 301, the stylet holder 302 and the stylet key 304 are fixedly connected, i.e. the stylet 301, the stylet holder 302 and the stylet key 304 move synchronously. The syringe 401, the syringe holder 402 and the syringe button 404 are connected and fixed, that is, the syringe 401, the syringe holder 402 and the syringe button 404 move synchronously.
When the forward distance adjustment key 6 is in the second forward position and the plunger 301 and the needle cannula 401 are advancing, the needle cannula holder block 601 can block the needle cannula button 404 and the plunger holder block 602 can block the plunger holder 302, so that the plunger 301 and the needle cannula 401 will only advance 15 mm.
When the forward-movement-distance adjusting key 6 is located at the first forward position and the needle core 301 and the needle tube 401 are moving forward, the needle tube holder block 601 cannot block the needle tube button 404, and the needle core holder block 602 cannot block the needle core holder 302. The needle hub stop 601 and the needle hub stop 602 will eventually be stopped by the inner carrier 2 and the needle hub 301 and needle cannula 401 will be able to advance 22 mm.
When the forward distance adjusting key 6 is located at a first forward position and the stylet assembly 3 and the needle tube assembly 4 are both in a state to be launched, the forward launch key 501 or the rear launch key 503 is pressed forward, and both the stylet 301 and the needle tube 401 can advance a first set distance; after the core 301 and needle 401 have advanced the first set distance, the biopsy device will return to the initial state.
In this embodiment, the biopsy device further comprises a function adjustment key 7, the function adjustment key 7 being located on the outer housing 1, the function adjustment key 7 being movable along the circumferential direction of the outer housing 1. Function adjusting key 7 is located between preceding transmission key 501 and the back transmission key 503, and connecting strip 502 is located between shell body 1 and inner support 2, and function adjusting key 7 is located the outside of connecting strip 502, and function adjusting key 7 and shell body 1 joint, the interior side of function adjusting key 7 contains shift lug 701.
When the function adjusting key 7 is located at the locking position, the stylet assembly 3 and the needle tube assembly 4 are both in a state to be launched, and when the front launching key 501 or the rear launching key 503 is pressed forwards, the stylet 301 and the needle tube 401 can not advance, so that the error firing can be effectively prevented, as shown in fig. 14.
When the function adjusting key 7 is located at the step firing position, the hub assembly 3 and the needle cannula assembly 4 are both in the ready-to-fire state, and the front firing key 501 or the rear firing key 503 is pressed forward, the hub 301 can advance by the first set distance or the second set distance, but the needle cannula 401 cannot advance by any distance, as shown in fig. 15, the numerical value in fig. 15 is in mm.
When the function adjusting key 7 is located at the full-automatic firing position, the stylet assembly 3 and the needle cannula assembly 4 are both in a to-be-fired state, and the front firing key 501 or the rear firing key 503 is pressed forward, both the stylet 301 and the needle cannula 401 can advance by the first set distance, or both the stylet 301 and the needle cannula 401 can advance by the second set distance, as shown in fig. 16.
In this embodiment, the rear portion of the firing assembly 5 is provided with an elastic strip 504, the elastic strip 504 can reset the firing assembly 5 after being pressed, and the outer housing 1 is provided with an identifier (lock) of the locking position, an identifier (Semi) of the step-by-step firing position, and an identifier (Auto) of the full-automatic firing position from bottom to top.
The identification (lock) of the locking position corresponds to the locking position, the identification (Semi) of the step-by-step transmission position corresponds to the step-by-step transmission position, and the identification (Auto) of the full-automatic transmission position corresponds to the full-automatic transmission position.
In this embodiment, the outside of the connecting bar 502 is provided with a locking position protrusion 5023, and when the function adjusting key 7 is located at the locking position and the stylet assembly 3 and the needle cannula assembly 4 are both in the state to be fired, the shift protrusion 701 is in front-back corresponding abutment with the locking position protrusion 5023. Due to the blocking of the locking position projection 5023, when the front shoot key 501 or the rear shoot key 503 is pressed forward, neither the stylet 301 nor the needle cannula 401 can advance, nor the front shoot key 501 or the rear shoot key 503 can be pressed forward.
In this embodiment, a step launching position protrusion 5024 is further disposed on the outer side of the connecting bar 502, when the function adjusting key 7 is located at the step launching position and the stylet assembly 3 and the needle cannula assembly 4 are both in a to-be-launched state, the shift protrusion 701 corresponds to the step launching position protrusion 5024 in a front-back manner, and a first gap (e.g., 2mm) exists between the shift protrusion 701 and the step launching position protrusion 5024.
When the needle core assembly 3 and the needle tube assembly 4 are in a to-be-launched state (position), the needle core holder top block 5022 is in contact with the needle core holder clamping block 3021, and a gap exists between the needle tube holder top block 5021 and the needle tube holder clamping block 4021. Then pressing the front fire key 501 or the rear fire key 503 forward moves the connecting bar 502 forward only by the first gap, and the cartridge holder top block 5022 can eject the cartridge holder block 3021 out of the cartridge holder slot 202, but the syringe holder top block 5021 cannot eject the syringe holder block 4021 out of the syringe holder slot 201. I.e., the hub assembly 3 will be in a fired state and the needle assembly 4 will remain in a cocked state.
At this time, if the needle assembly 4 needs to be in the launched state, the function adjusting key 7 can be located at the fully automatic launching position, the front launching key 501 or the rear launching key 503 is pressed forward, the needle holder jacking block 5021 can jack the needle holder clamping block 4021 out of the needle holder clamping groove 201, and the needle assembly 4 is also in the launched state.
In this embodiment, the outside of the connecting bar 502 is further provided with a vacant position, when the function adjusting key 7 is located at the full-automatic launching position, the shift knob 701 is circumferentially staggered with the locking position knob 5023 and the step launching position knob 5024, and the shift knob 701 does not block the connecting bar 502 from advancing. The forward distance (e.g. 5mm) of the function adjusting key 7 without being blocked by the shift knob 701 is larger than the first clearance.
In this embodiment, when the function adjusting key 7 is located at the fully automatic launching position and the stylet assembly 3 and the needle cannula assembly 4 are both in a to-be-launched state, the front launching key 501 or the rear launching key 503 is pressed forward, the stylet holder eject block 5022 can eject the stylet holder block 3021 out of the stylet holder block slot 202, and the stylet holder eject block 5021 can eject the stylet holder block 4021 out of the stylet holder block slot 201. I.e., both the hub assembly 3 and the needle cannula assembly 4 are in a fired state.
The operation of the biopsy device is described below:
1. the forward distance adjustment key 6 is in a first forward position, the function adjustment key 7 is in a locked position, and both the hub assembly 3 and the needle cannula assembly 4 are in an initial position or state, as shown in FIG. 1.
2. The plunger button 304 and the syringe button 404 are pressed backward, so that the plunger assembly 3 and the syringe assembly 4 are both in the state to be fired.
3. The positions of the forward distance adjusting key 6 and the function adjusting key 7 are adjusted, the front emission key 501 or the rear emission key 503 is pressed forwards, and the biopsy device is triggered, wherein the following 6 parallel selection modes are provided:
3.1, the forward distance adjusting key 6 is positioned at a first forward position, the function adjusting key 7 is positioned at a full-automatic launching position, the front launching key 501 or the rear launching key 503 is pressed forwards, and the needle core 301 and the needle tube 401 both advance for a first set distance (such as 22 mm);
3.2, the forward distance adjusting key 6 is positioned at a first forward position, the function adjusting key 7 is positioned at a step-by-step launching position, the front launching key 501 or the rear launching key 503 is pressed forwards, the needle core 301 advances for a first set distance (such as 22mm), and the needle tube 401 is kept still;
if it is desired that the syringe 401 also be advanced a first set distance (e.g., 22mm), the function adjustment key 7 is placed in the fully automatic fire position and either the forward fire key 501 or the rearward fire key 503 is pressed forward and the syringe 401 is also advanced a first set distance (e.g., 22 mm).
3.3, the forward distance adjusting key 6 is positioned at the first forward position, the function adjusting key 7 is positioned at the locking position, the front emission key 501 or the rear emission key 503 is pressed forwards, and the needle core 301 and the needle tube 401 are kept still.
3.4, the forward distance adjusting key 6 is positioned at a second forward position, the function adjusting key 7 is positioned at a full-automatic launching position, the front launching key 501 or the rear launching key 503 is pressed forwards, and the needle core 301 and the needle tube 401 both advance for a second set distance (such as 15 mm);
3.5, the forward distance adjusting key 6 is positioned at a second forward position, the function adjusting key 7 is positioned at a step-by-step launching position, the front launching key 501 or the rear launching key 503 is pressed forwards, the needle core 301 advances for a second set distance (such as 15mm), and the needle tube 401 is kept still;
if it is desired that the syringe 401 also be advanced a second set distance (e.g., 15mm), the function adjustment key 7 is placed in the fully automatic fire position and either the forward fire key 501 or the rearward fire key 503 is pressed forward and the syringe 401 is also advanced a second set distance (e.g., 15 mm).
3.6, the forward distance adjusting key 6 is positioned at the second forward position, the function adjusting key 7 is positioned at the locking position, the front emission key 501 or the rear emission key 503 is pressed forwards, and the needle core 301 and the needle tube 401 are kept still.
In addition, the front part of the needle core 301 is provided with a sample groove with the length of 18mm, and the biopsy device can obtain tissue samples with different lengths according to requirements.
When the advancing distance adjusting key 6 is located at the first advancing position, after the biopsy device is fired, the needle core 301 and the needle tube 401 move forward 22mm sequentially, when the needle core 301 moves forward 22mm first, the 18mm sample groove is completely exposed out of the needle tube 401, the elastic tissue enters the 18mm sample groove, then the needle tube 401 moves forward 22mm, the sample groove of the needle core 301 is completely closed, and finally a sample with the length of 18mm is obtained.
When the advancing distance adjusting key 6 is located at the second advancing position, after the biopsy device is fired, the needle core 301 and the needle tube 401 move forward 15mm, when the needle core 301 moves 15mm, only 9mm of 18mm sample groove is exposed outside the needle tube 401, the elastic tissue enters the exposed sample groove with the length of 9mm, then the needle tube 401 moves forward 15mm, the sample groove of the needle core 301 is completely closed, and finally a 9mm sample is obtained.
For convenience of understanding and description, the absolute positional relationship is used in the present invention for expression, wherein the directional word "up" denotes a direction perpendicular to the paper surface of fig. 1 and directed to the outside of the paper surface, "down" denotes a direction perpendicular to the paper surface of fig. 1 and directed to the inside of the paper surface, "left" denotes a left side direction in fig. 1, "right" denotes a right side direction in fig. 1, "front" denotes an upper side direction in fig. 1, and "rear" denotes a lower side direction in fig. 1. The present invention has been described in terms of the viewing angle of the reader or user, but the above directional terms should not be construed or interpreted as limiting the scope of the present invention.
The above description is only exemplary of the invention and should not be taken as limiting the scope of the invention, so that the invention is intended to cover all modifications and equivalents of the embodiments described herein. In addition, the technical features and the technical schemes, and the technical schemes can be freely combined and used.
Claims (10)
1. A biopsy device, wherein the biopsy device comprises:
an outer shell (1) having a cylindrical structure;
the inner support (2) is sleeved in the outer shell (1);
the needle core assembly (3) comprises a needle core (301), a needle core seat (302) and a needle core seat spring (303) which are sequentially connected from front to back, and the needle core seat (302) is also connected with a needle core key (304);
the needle tube assembly (4) comprises a needle tube (401), a needle tube seat (402) and a needle tube seat spring (403) which are sequentially connected from front to back, and the needle tube seat (402) is also connected with a needle tube key (404);
the firing assembly (5) comprises a front firing key (501), a connecting bar (502) and a rear firing key (503) which are sequentially connected from front to back;
the advancing distance adjusting key (6) is positioned on the outer shell (1), and the advancing distance adjusting key (6) can move along the circumferential direction of the outer shell (1);
when the stylet key (304) and the needle tube key (404) are pressed backwards, the stylet assembly (3) and the needle tube assembly (4) can be in a state to be launched;
when the forward distance adjusting key (6) is located at a first forward position and the stylet assembly (3) and the needle tube assembly (4) are both in a state to be launched, a front launching key (501) or a rear launching key (503) is pressed forwards, and the stylet (301) and the needle tube (401) can both advance for a first set distance;
when the forward distance adjusting key (6) is located at a second forward position and the stylet assembly (3) and the needle tube assembly (4) are both in a state to be launched, the front launching key (501) or the rear launching key (503) is pressed forwards, and the stylet (301) and the needle tube (401) can both advance for a second set distance.
2. The biopsy device of claim 1, wherein the core (301) and the needle (401) both return to an initial position when the core (301) and the needle (401) are advanced a first set distance, the second set distance being less than the first set distance.
3. Biopsy device according to claim 1, wherein the advanced distance adjustment key (6) is located at the front of the outer housing (1), and the second advanced position is located to the left and right of the first advanced position, and the first set distance is 22mm and the second set distance is 15 mm.
4. The biopsy device of claim 2, wherein the forward distance adjustment key (6) comprises a forward and a backward needle holder stop (601) and a core holder stop (602), the forward distance adjustment key (6) being located at the second forward position, the needle holder stop (601) being capable of blocking the needle holder button (404) and the core holder stop (602) being capable of blocking the core holder (302) during forward movement of the needle (301) and the needle (401).
5. The biopsy device of claim 1, wherein the inner support (2) comprises a needle holder clamping groove (201) and a needle core holder clamping groove (202) which are arranged in a front-back manner, a needle holder clamping block (4021) is arranged at the rear part of the needle holder (402), a needle core holder clamping block (3021) is arranged at the rear part of the needle core holder (302), the needle holder clamping block (4021) can be clamped with the needle holder clamping groove (201), the needle core holder clamping block (3021) can be clamped with the needle core holder clamping groove (202), the biopsy device further comprises a function adjusting key (7), the function adjusting key (7) is positioned on the outer shell (1), and the function adjusting key (7) can move along the circumferential direction of the outer shell (1);
when the function adjusting key (7) is positioned at a locking position, the stylet assembly (3) and the needle tube assembly (4) are both in a state to be launched, and when the front launching key (501) or the rear launching key (503) is pressed forwards, the stylet (301) and the needle tube (401) can not advance;
when the function adjusting key (7) is positioned at the step launching position, the needle core component (3) and the needle tube component (4) are both in a state to be launched, and the front launching key (501) or the rear launching key (503) is pressed forwards, the needle core (301) can advance by the first set distance or the second set distance, and the needle tube (401) cannot advance;
when the function adjusting key (7) is located at a full-automatic launching position, the needle core assembly (3) and the needle tube assembly (4) are both in a state to be launched, and the front launching key (501) or the rear launching key (503) is pressed forwards, the needle core (301) and the needle tube (401) can both advance by the first set distance, or the needle core (301) and the needle tube (401) can both advance by the second set distance.
6. The biopsy device of claim 5, wherein the function adjustment key (7) is located between the front firing key (501) and the rear firing key (503), the connecting bar (502) is located between the outer housing (1) and the inner housing (2), the inside of the connecting bar (502) comprises a needle hub abutment (5021) and a needle hub abutment (5022) arranged in front and behind, the function adjustment key (7) is located outside the connecting bar (502), and the inside of the function adjustment key (7) comprises a shift knob (701).
7. The biopsy device of claim 6, wherein the connecting bar (502) is provided at an outer side thereof with a locking position projection (5023), and when the function adjusting key (7) is located at the locking position and the stylet assembly (3) and the needle cannula assembly (4) are both in a to-be-fired state, the shift projection (701) is in front-back corresponding abutment with the locking position projection (5023).
8. The biopsy device of claim 6, wherein the connecting bar (502) is further provided with a step-firing position projection (5024) on the outer side, when the function adjusting key (7) is located at the step-firing position, and the needle core assembly (3) and the needle tube assembly (4) are both in a to-be-fired state, the shift projection (701) corresponds to the step-firing position projection (5024) in the front-back direction, a first gap exists between the shift projection (701) and the step-firing position projection (5024), and when the front-firing key (501) or the rear-firing key (503) is pressed forward, the connecting bar (502) can only move forward the first gap, the needle core holder ejection block (5022) can eject the needle core holder cartridge (3021) out of the needle core holder slot (202), and the needle holder ejection block (4021) cannot eject the needle holder cartridge (5021) out of the needle holder slot (201).
9. The biopsy device of claim 8, wherein when the function adjustment key (7) is in the fully automatic firing position, the stylet assembly (3) is in a fired state, and the needle assembly (4) is in a ready-to-fire state, the needle hub ejector block (5021) is capable of ejecting the needle hub latch (4021) out of the needle hub slot (201) by pressing the front firing key (501) or the rear firing key (503) forward.
10. The biopsy device of claim 6, wherein when the function adjusting key (7) is in the fully automatic firing position and the core assembly (3) and the needle assembly (4) are both in the ready-to-fire state, the forward firing key (501) or the rear firing key (503) is pressed forward, the core holder ejector block (5022) is capable of ejecting the core holder latch (3021) out of the core holder latch slot (202), and the needle holder ejector block (5021) is capable of ejecting the needle holder latch (4021) out of the needle holder latch slot (201).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011163042.9A CN112168229B (en) | 2020-10-27 | 2020-10-27 | Biopsy device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011163042.9A CN112168229B (en) | 2020-10-27 | 2020-10-27 | Biopsy device |
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| CN112168229A true CN112168229A (en) | 2021-01-05 |
| CN112168229B CN112168229B (en) | 2024-04-23 |
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| CN112890878A (en) * | 2021-01-20 | 2021-06-04 | 上海埃斯埃医疗技术有限公司 | Novel full-automatic structure biopsy rifle device |
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| CN112168229B (en) | 2024-04-23 |
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