CN113100698A - Neural scope with biopsy sampling function - Google Patents
Neural scope with biopsy sampling function Download PDFInfo
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- CN113100698A CN113100698A CN202110446228.3A CN202110446228A CN113100698A CN 113100698 A CN113100698 A CN 113100698A CN 202110446228 A CN202110446228 A CN 202110446228A CN 113100698 A CN113100698 A CN 113100698A
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- 238000001574 biopsy Methods 0.000 title claims abstract description 89
- 238000005070 sampling Methods 0.000 title claims abstract description 88
- 230000001537 neural effect Effects 0.000 title description 2
- 238000000034 method Methods 0.000 claims abstract description 11
- 208000003174 Brain Neoplasms Diseases 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 9
- 239000007858 starting material Substances 0.000 claims description 9
- 238000005286 illumination Methods 0.000 claims description 4
- 206010028980 Neoplasm Diseases 0.000 claims description 3
- 210000005036 nerve Anatomy 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 3
- 210000005013 brain tissue Anatomy 0.000 description 2
- 206010067484 Adverse reaction Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006838 adverse reaction Effects 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 230000002490 cerebral effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/313—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for introducing through surgical openings, e.g. laparoscopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00112—Connection or coupling means
- A61B1/00121—Connectors, fasteners and adapters, e.g. on the endoscope handle
- A61B1/00128—Connectors, fasteners and adapters, e.g. on the endoscope handle mechanical, e.g. for tubes or pipes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/0661—Endoscope light sources
- A61B1/0684—Endoscope light sources using light emitting diodes [LED]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
- A61B10/0266—Pointed or sharp biopsy instruments means for severing sample
-
- 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
- A61B10/04—Endoscopic instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
- A61B17/32002—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes with continuously rotating, oscillating or reciprocating cutting 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
- 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)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Radiology & Medical Imaging (AREA)
- Biophysics (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Endoscopes (AREA)
Abstract
The invention relates to a neuroendoscope with biopsy sampling function, which comprises: a display, a light source, a neuroendoscope; the nerve endoscope has introduced the biopsy sampling subassembly, and the setting of biopsy sampling subassembly is at the tip of nerve endoscope, and the top of biopsy sampling subassembly has camera lens, carries out photoelectric conversion and transmits in real time to the display with the operation image in real time on, and the art person passes through the display screen and observes the condition of art district, accomplishes brain tumor's biopsy sampling work. With this technique, biopsy sampling during neurosurgery can be accomplished.
Description
Technical Field
The invention relates to a neuroendoscope with a biopsy sampling function, in particular to a neuroendoscope with a biopsy sampling function, which is suitable for the neurosurgical operation process and belongs to the field of neurosurgical operations.
Background
The neuroendoscopy technology is one of the emerging technologies of neurosurgery and is gradually and widely recognized, the neuroendoscopy can provide good illumination and imaging angles, reduce the traction of brain tissues, clearly display anatomical structures of operative areas without dead angles, discover hidden focuses and responsible vessels, can furthest reserve the functions of the vessels and nerves, and has good postoperative comfort for patients. Neuroendoscopy has unique advantages, and can promote the continuous innovation of neurosurgery operation technology, but the neuroendoscopy can not carry out sampling biopsy when discovering brain tumor in the operation process.
Therefore, a neuroendoscope with a biopsy sampling function needs to be found, which is suitable for the neurosurgery operation process and solves the technical problem that the neurosurgery operation process in the prior art cannot be used for biopsy sampling.
Disclosure of Invention
The invention aims to provide a neuroendoscope with a biopsy sampling function, which solves the technical problem that the neurosurgery operation process in the prior art cannot be performed with biopsy sampling, can greatly reduce various complications caused by brain tissue and cerebral neurovascular injury after operation, reduce adverse reaction after operation, improve the operation effect and enhance the comfort and satisfaction of patients.
The technical scheme adopted by the invention is as follows: a neuroendoscope with biopsy sampling functionality, comprising: a display, a light source, a neuroendoscope 1;
the display is used for performing photoelectric conversion on the operation image in real time and transmitting the operation image to the high-definition display screen in real time, and an operator observes the condition of the operation area through the display screen;
the light source is arranged at the front end of the neuroendoscope and provides sufficient and accurate illumination for an operation area;
wherein the neuroendoscope introduces a biopsy sampling component 2, the biopsy sampling component 2 is arranged at the end part of the neuroendoscope 1 through a connecting piece 9, the top end 10 of the biopsy sampling component 2 is provided with a camera lens,
wherein, the biopsy sampling component 2 comprises a screw cap 3, a rotary starter 4, a torsion spring 5, a torsion spring sleeve 6, a return spring 7, a rotary cutting knife 8, a connecting piece 9 and a top end 10;
wherein, the screw cap 3 is used for sealing the biopsy sampling assembly 2 and fixing the rotary actuator 4, the rotary actuator 4 is connected with a torsion spring 5, and a torsion spring sleeve 6 is arranged outside the torsion spring 5; one end of the torsion spring 5 is connected with the rotary starter 4, and the other end is connected with the rotary cutting knife 8; the side wall of the rotary cutting knife 8 is connected with a return spring 7;
wherein, the whole rotary cutter 8 is eccentrically arranged in an oval shape, and the blade is arranged at the end part of the rotary cutter 8;
the specific working mode of biopsy sampling is as follows:
step 1: when biopsy sampling assembly 2 receives a biopsy sampling start signal, rotary actuator 4 starts and pushes torsion spring 5 in;
step 2: the torsion spring 5 starts to push the first end of the eccentric elliptic rotary cutting knife 8, and the pushing force of the torsion spring 5 drives the eccentric elliptic rotary cutting knife 8 to rotate;
and step 3: in the rotating process of the rotary cutting knife 8, two blades positioned at the second end of the rotary cutting knife 8 extend out of the biopsy sampling assembly 2 to finish protruding from the biopsy sampling assembly 2 and use the two blades to cut tumor part tissues to finish collecting brain tumor samples;
and 4, step 4: after the cutting of the rotary cutting knife 8 is completed, the biopsy sampling assembly 2 receives the biopsy sampling completion signal, the rotary actuator 4 stops driving the torsion spring 5, the elastic force of the reset spring 7 completes the reset of the eccentric elliptic rotary cutting knife 8, and the sealing of the biopsy sampling at the biopsy sampling assembly 2 is ensured.
Wherein the torque of the torsion spring 5 is different from the torque of the return spring 7.
Wherein the torque of the torsion spring 5 is larger than the torque of the return spring 7.
Wherein a camera is provided within the top end 10 of the biopsy sampling assembly 2.
Wherein a light source is disposed within the top end 10 of the biopsy sampling assembly 2.
Wherein, the light source is an LED light source.
Wherein, the blade of the rotary cutting knife 8 is provided with two pieces.
Wherein the top end 10 of the biopsy sampling assembly 2 is detachably connected to the connecting member 9.
Wherein the top end 10 of the biopsy sampling assembly 2 is detachably connected with the connecting piece 9 in a sealing threaded connection.
Wherein, the connecting piece 9 is detachably connected with the end part of the neuroendoscope 1.
The invention has the advantages that: the neuroendoscope with the biopsy sampling function is adopted in the neurosurgery operation process, so that an operator has better visual stereoscopic impression in vision; meanwhile, the operator can control the operation more conveniently and efficiently in the neurosurgery operation; carry out photoelectric conversion and transmit to the display in real time with the operation image on, the art person passes through the display screen and observes the art district condition, accomplishes the one-time completion biopsy sample of brain tumour to and the sealed of biopsy sampling subassembly, fixed.
Drawings
FIG. 1 is a schematic perspective view of a neuroendoscope according to the present invention;
FIG. 2 is a cross-sectional view of a biopsy sampling assembly of the present invention;
FIG. 3 is a schematic representation of the operation of the biopsy sampling assembly of the present invention;
icon: 1-neuroendoscopic devices; 2-a biopsy sampling assembly; 3-screw cap cover; 4-a rotary actuator; 5-a torsion spring; 6-torsion spring sleeve; 7-a return spring; 8-a rotary cutter; 9-a connector; 10-top end.
Detailed Description
Referring to fig. 1, the present invention relates to a neuroendoscope with biopsy sampling function, which has a three-dimensional structure and shows a schematic diagram of brain tumor biopsy sampling during neurosurgery.
Referring to fig. 2, a neuroendoscope with biopsy sampling function includes: a display, a light source, a neuroendoscope;
the display is used for performing photoelectric conversion on the operation image in real time and transmitting the operation image to the high-definition display screen in real time, and an operator observes the condition of the operation area through the display screen;
the light source is arranged at the front end of the neuroendoscope and provides sufficient and accurate illumination for an operation area;
wherein the neuroendoscope introduces a biopsy sampling component, the biopsy sampling component is arranged at the end part of the neuroendoscope through a connecting piece, the top end of the biopsy sampling component is provided with a camera lens,
the biopsy sampling assembly comprises a screw cap, a rotary starter, a torsion spring sleeve, a return spring, a rotary cutter, a connecting piece and a top end;
the screw cap is used for sealing the biopsy sampling assembly and fixing the rotary starter, the rotary starter is connected with a torsion spring, and a torsion spring sleeve is arranged on the outer side of the torsion spring; one end of the torsion spring is connected with the rotary starter, and the other end of the torsion spring is connected with the rotary cutting knife; the side wall of the rotary cutting knife is connected with a return spring;
wherein, the whole rotary cutting knife is eccentrically arranged in an oval shape, and the blade is arranged at the end part of the rotary cutting knife;
referring to fig. 3, the specific working method of biopsy sampling is:
step 1: when biopsy sampling assembly 2 receives a biopsy sampling start signal, rotary actuator 4 starts and pushes torsion spring 5 in;
step 2: the torsion spring 5 starts to push the first end of the eccentric elliptic rotary cutting knife 8, and the pushing force of the torsion spring 5 drives the eccentric elliptic rotary cutting knife 8 to rotate;
and step 3: in the rotating process of the rotary cutting knife 8, two blades positioned at the second end of the rotary cutting knife 8 extend out of the biopsy sampling assembly 2 to finish protruding from the biopsy sampling assembly 2 and use the two blades to cut tumor part tissues to finish collecting brain tumor samples;
and 4, step 4: after the cutting of the rotary cutting knife 8 is completed, the biopsy sampling assembly 2 receives the biopsy sampling completion signal, the rotary actuator 4 stops driving the torsion spring 5, the elastic force of the reset spring 7 completes the reset of the eccentric elliptic rotary cutting knife 8, and the sealing of the biopsy sampling at the biopsy sampling assembly 2 is ensured.
Wherein, the torsion of the torsion spring is different from the torsion of the return spring.
Wherein, the torsion of the torsion spring is larger than the torsion of the return spring.
Wherein, be provided with the camera in the top of biopsy sampling subassembly.
Wherein, a light source is arranged in the top end of the biopsy sampling component.
Wherein, the light source is an LED light source.
Wherein, the blade of rotary cutter is provided with two.
Wherein, the top end of the biopsy sampling component is detachably connected with the connecting piece.
Wherein, the top end of the biopsy sampling component is detachably connected with the connecting piece in a sealing threaded connection manner.
Wherein, the connecting piece is connected with the end part of the neuroendoscope in a detachable mode.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A neuroendoscope with biopsy sampling functionality, comprising: a display, a light source, a neuroendoscope (1);
the display is used for performing photoelectric conversion on the operation image in real time and transmitting the operation image to the high-definition display screen in real time, and an operator observes the condition of the operation area through the display screen;
the light source is arranged at the front end of the neuroendoscope and provides sufficient and accurate illumination for an operation area;
it is characterized in that;
the neuroendoscope introduces a biopsy sampling component (2), the biopsy sampling component (2) is arranged at the end part of the neuroendoscope (1) through a connecting piece (9), and the top end (10) of the biopsy sampling component (2) is provided with a camera lens,
wherein, the biopsy sampling component (2) comprises a screw cap cover (3), a rotary starter (4), a torsion spring (5), a torsion spring sleeve (6), a reset spring (7), a rotary cutting knife (8), a connecting piece (9) and a top end (10);
wherein the screw cap (3) is used for sealing and fixing the rotary actuator (4) of the biopsy sampling assembly (2), the rotary actuator (4) is connected with a torsion spring (5), and a torsion spring sleeve (6) is arranged on the outer side of the torsion spring (5); one end of the torsion spring (5) is connected with the rotary starter (4), and the other end is connected with the rotary cutting knife (8); the side wall of the rotary cutting knife (8) is connected with a return spring (7);
wherein the whole rotary cutting knife (8) is eccentrically arranged in an oval shape, and the blade is arranged at the end part of the rotary cutting knife (8);
the specific working mode of biopsy sampling is as follows:
step 1: when the biopsy sampling assembly (2) receives a biopsy sampling starting signal, the rotary actuator (4) starts and pushes the torsion spring (5);
step 2: the torsion spring (5) starts to push the first end of the eccentric elliptic rotary cutting knife (8), and the pushing force of the torsion spring (5) drives the eccentric elliptic rotary cutting knife (8) to rotate;
and step 3: in the rotating process of the rotary cutting knife (8), two blades positioned at the second end of the rotary cutting knife (8) can extend out of the biopsy sampling assembly (2) to finish protruding from the biopsy sampling assembly (2) and cut tumor part tissues by using the two blades to finish collecting brain tumor samples;
and 4, step 4: after the rotary cutting knife (8) finishes cutting, the biopsy sampling assembly (2) receives a biopsy sampling completion signal, the rotary starter (4) stops driving the torsion spring (5), the elastic force of the reset spring (7) completes the reset of the eccentric elliptic rotary cutting knife (8), and the sealing of the biopsy sampling on the biopsy sampling assembly (2) is ensured.
2. A neuroendoscope with biopsy sampling function according to claim 2, characterized in that the torque of the torsion spring (5) is different from the torque of the return spring (7).
3. A neuroendoscope with biopsy sampling function according to claim 2, characterized by the torsion spring (5) having a torque larger than the torque of the return spring (7).
4. A neuroendoscope with biopsy sampling function according to claim 1, characterized in that a camera is arranged in the top end (10) of the biopsy sampling assembly (2).
5. A neuroendoscope with biopsy sampling function according to claim 1, characterized in that a light source is arranged in the tip (10) of the biopsy sampling assembly (2).
6. The neuroendoscope with biopsy sampling function according to claim 5, wherein the light source is an LED light source.
7. A neuroendoscope with biopsy sampling function according to claim 1, characterized in that the blade of the rotary cutter (8) is provided with two pieces.
8. A neuroendoscope with biopsy sampling function according to claim 1, characterized in that the top end (10) of the biopsy sampling assembly (2) is detachably connected with the connecting piece (9).
9. A neuroendoscope with biopsy sampling function according to claim 8, characterized in that the top end (10) of the biopsy sampling assembly (2) is detachably connected with the connecting piece (9) in a sealing threaded connection.
10. A neuroendoscope with biopsy sampling function according to claim 1, characterized in that the connector (9) is detachably connected to the end of the neuroendoscope (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110446228.3A CN113100698B (en) | 2021-04-25 | 2021-04-25 | Neural scope with biopsy sampling function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110446228.3A CN113100698B (en) | 2021-04-25 | 2021-04-25 | Neural scope with biopsy sampling function |
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| Publication Number | Publication Date |
|---|---|
| CN113100698A true CN113100698A (en) | 2021-07-13 |
| CN113100698B CN113100698B (en) | 2022-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110446228.3A Expired - Fee Related CN113100698B (en) | 2021-04-25 | 2021-04-25 | Neural scope with biopsy sampling function |
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| Country | Link |
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| CN (1) | CN113100698B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115474971A (en) * | 2022-10-28 | 2022-12-16 | 北京中研智创新技术研究院有限公司 | Direction-changeable closed negative-pressure brain tissue biopsy device and endoscopic biopsy system |
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| US4986807A (en) * | 1989-01-23 | 1991-01-22 | Interventional Technologies, Inc. | Atherectomy cutter with radially projecting blade |
| CN2468033Y (en) * | 2000-12-26 | 2001-12-26 | 孟繁印 | Electric positioning sampler for tissue biopsy |
| US20020077638A1 (en) * | 2000-12-19 | 2002-06-20 | Scimed Life Systems, Inc. | Expandable atherectomy burr |
| CN203354573U (en) * | 2013-06-24 | 2013-12-25 | 张华� | Tumor biopsy sampler |
| US20140276202A1 (en) * | 2013-03-14 | 2014-09-18 | The Cleveland Clinic Foundation | Tissue sampling device |
| CN211784396U (en) * | 2019-12-30 | 2020-10-27 | 内蒙古自治区林业科学研究院 | Novel forest land soil sampler |
| CN112587176A (en) * | 2020-12-29 | 2021-04-02 | 遂宁市中心医院 | Portable biopsy sampling gastroscope |
| CN112617977A (en) * | 2020-12-31 | 2021-04-09 | 杭州康基医疗器械有限公司 | Rotary cutter |
-
2021
- 2021-04-25 CN CN202110446228.3A patent/CN113100698B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4986807A (en) * | 1989-01-23 | 1991-01-22 | Interventional Technologies, Inc. | Atherectomy cutter with radially projecting blade |
| US20020077638A1 (en) * | 2000-12-19 | 2002-06-20 | Scimed Life Systems, Inc. | Expandable atherectomy burr |
| CN2468033Y (en) * | 2000-12-26 | 2001-12-26 | 孟繁印 | Electric positioning sampler for tissue biopsy |
| US20140276202A1 (en) * | 2013-03-14 | 2014-09-18 | The Cleveland Clinic Foundation | Tissue sampling device |
| CN203354573U (en) * | 2013-06-24 | 2013-12-25 | 张华� | Tumor biopsy sampler |
| CN211784396U (en) * | 2019-12-30 | 2020-10-27 | 内蒙古自治区林业科学研究院 | Novel forest land soil sampler |
| CN112587176A (en) * | 2020-12-29 | 2021-04-02 | 遂宁市中心医院 | Portable biopsy sampling gastroscope |
| CN112617977A (en) * | 2020-12-31 | 2021-04-09 | 杭州康基医疗器械有限公司 | Rotary cutter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115474971A (en) * | 2022-10-28 | 2022-12-16 | 北京中研智创新技术研究院有限公司 | Direction-changeable closed negative-pressure brain tissue biopsy device and endoscopic biopsy system |
| CN115474971B (en) * | 2022-10-28 | 2023-03-10 | 北京中研智创新技术研究院有限公司 | Direction-changeable closed negative-pressure brain tissue biopsy device and endoscopic biopsy system |
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| CN113100698B (en) | 2022-10-21 |
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Granted publication date: 20221021 |