CN112545576B - Biopsy rotary cutting device - Google Patents
Biopsy rotary cutting device Download PDFInfo
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- CN112545576B CN112545576B CN202011294619.XA CN202011294619A CN112545576B CN 112545576 B CN112545576 B CN 112545576B CN 202011294619 A CN202011294619 A CN 202011294619A CN 112545576 B CN112545576 B CN 112545576B
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- sleeve
- sealing
- channel section
- outer tube
- communication port
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- 238000001574 biopsy Methods 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 129
- 238000004891 communication Methods 0.000 claims abstract description 73
- 238000005070 sampling Methods 0.000 claims abstract description 22
- 230000000903 blocking effect Effects 0.000 claims abstract description 12
- 239000003292 glue Substances 0.000 claims description 10
- 239000012943 hotmelt Substances 0.000 claims description 4
- 229920001169 thermoplastic Polymers 0.000 claims description 4
- 239000004416 thermosoftening plastic Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 206010028980 Neoplasm Diseases 0.000 description 5
- 238000000926 separation method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000012952 Resampling Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 208000002847 Surgical Wound Diseases 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
- A61B10/0266—Pointed or sharp biopsy instruments means for severing sample
- A61B10/0275—Pointed or sharp biopsy instruments means for severing sample with sample notch, e.g. on the side of inner stylet
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
- A61B10/0283—Pointed or sharp biopsy instruments with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe
Landscapes
- 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)
- Endoscopes (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides a biopsy rotary cutting device, which comprises an inner tube and an outer tube which are coaxially arranged, wherein the inner tube is positioned at the inner side of the outer tube and can axially move along the inner tube; the first end of the outer tube is provided with a puncture head, the outer tube is provided with a sampling groove, and the sampling groove is communicated with a gap between the inner tube and the outer tube and an inner cavity of the inner tube, and the puncture device is characterized by further comprising a sleeve structure and a sealing assembly; the sleeve structure is arranged on the outer side of the inner tube in a surrounding manner, an annular channel is formed between the sleeve structure and the inner tube, and the annular channel comprises a non-blocking channel section and a blocking channel section which are connected with each other; the first end of the non-plugging channel section is provided with a first communication port, the first communication port is connected with the gap, the second end of the plugging channel section is provided with a second communication port, and the second communication port is connected with the atmosphere; when the sealing assembly moves to the non-plugging channel section along with the inner pipe, the first communication port is communicated with the second communication port; when the sealing component moves to the plugging channel section, the sealing component plugs in the plugging channel section, and the first communication port and the second communication port are separated.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a biopsy rotary cutting device.
Background
The biopsy rotary cutting device is widely used in minimally invasive surgical puncture operation, and has the advantages of small surgical wound, healing, small residual knife scar, small damage, quick recovery and the like.
The head of the biopsy rotary cutting device is punctured by adopting a small-diameter puncture head, the tail of the puncture head is coaxially fixed with the head of an outer tube, the outer tube is sleeved on an inner tube coaxially assembled, the head of the inner tube is provided with a surgical knife, the head of the outer tube is provided with a sampling groove, the inner tube is at the most distal end before the puncture is completed, the inner tube rotates to retreat after the puncture is completed, the sampling groove is opened, meanwhile, a negative pressure system sucks tumor tissues into the sampling groove, and after the rotary cutting of the tissues is completed, the resected tissues are continuously sucked into a sample collector at the tail of the rotary cutting device through the inner cavity of the inner tube under negative pressure.
In the prior art, when tumor tissue is sucked into a sampling groove, an inner tube needs to move to be in contact with a sealing ring at the outer side of the inner tube, so that the inner tube plays a sealing role, and at the moment, the inner tube can prop open the sealing ring; when tumor tissue is sucked into the sample collector from the sampling groove, the inner tube needs to be moved to a position separated from the sealing ring.
Therefore, in the process of sampling for many times, the sealing ring needs to be contacted and spread for many times, and further, the fatigue damage of the sealing ring can be caused, so that the sealing effect is poor, and the sampling effect is affected.
Disclosure of Invention
The invention provides a biopsy rotary cutting device, which aims to solve the problems that the sealing device is required to be opened for pressure release for multiple times, so that the sealing ring is fatigued and damaged, the sealing effect is poor, and the sampling effect is affected.
According to the invention, there is provided a biopsy rotary cutting device comprising an inner tube and an outer tube coaxially arranged, the inner tube being located inside the outer tube and being capable of axial movement along itself; the first end of the outer tube is provided with a puncture head, the outer tube is provided with a sampling groove, and the sampling groove is communicated with a gap between the inner tube and the outer tube and an inner cavity of the inner tube, and the puncture device further comprises a sleeve structure and a sealing assembly;
The sleeve structure is fixedly connected with the outer tube, the sleeve structure is arranged on the outer side of the inner tube in a surrounding mode, an annular channel is formed between the sleeve structure and the inner tube, the annular channel is located at one end, far away from the puncture head, of the outer tube along the axial direction of the outer tube, and the annular channel comprises a non-blocking channel section and a blocking channel section which are connected with each other; the first end of the non-plugging channel section is provided with a first communication port which is directly or indirectly connected with the gap, the second end of the non-plugging channel section is connected with the first end of the plugging channel section, the second end of the plugging channel section is provided with a second communication port which is directly or indirectly connected with the atmosphere;
the sealing component is fixedly arranged on the outer side of the inner tube and is positioned in the annular channel;
when the sealing assembly moves to the non-plugging channel section along with the inner tube, the first communication port is communicated with the second communication port;
when the sealing assembly moves to the plugging channel section, the sealing assembly plugs in the plugging channel section, and the first communication port and the second communication port are separated.
Optionally, the seal assembly includes: a sealing base and a sealing ring; the sealing base is fixed on the outer wall of the inner tube, and the sealing ring is sleeved on the outer side of the sealing base;
The diameter of the inner wall of the plugging channel section is smaller than or equal to the outer diameter of the sealing assembly, and the diameter of the inner wall of the non-plugging channel section is larger than the outer diameter of the sealing assembly;
when the sealing assembly moves to at least part of the plugging channel section, the outer side of the sealing ring is in fit sealing with the inner wall of the plugging channel section;
When the sealing assembly moves to at least part of the position of the non-plugging channel section, a space is reserved between the outer side of the sealing ring and the inner wall of the non-plugging channel section.
Optionally, the non-plugging channel section comprises a gradual channel section, a first end of the gradual channel section is communicated with the gap, and a second end of the gradual channel section is connected with the plugging channel section;
Along the direction from the first end to the second end of the gradual change channel section, the diameter of the inner wall of the gradual change channel section gradually becomes smaller.
Optionally, the number of the first communication ports is multiple, and the multiple first communication ports are uniformly distributed around the axial center of the inner tube in the circumferential direction.
Optionally, the sleeve assembly comprises a first outer tube sleeve and a sealing sleeve;
The first outer tube sleeve is connected to one end of the outer tube, far away from the puncture head, and the first end of the sealing sleeve is fixedly connected to one side, far away from the puncture head, of the first outer tube sleeve and is annularly arranged on the outer side of the inner tube; the annular channel is formed between the sealing sleeve and the inner tube;
the first communication port is arranged on the first outer tube sleeve;
the second communication port is arranged at the second end of the sealing sleeve.
Optionally, the sleeve assembly further comprises a second outer tube sleeve and a steering sleeve;
The first end of the second outer tube sleeve is fixedly connected to one side, far away from the puncture head, of the first outer tube sleeve, and is annularly arranged on the outer side of the sealing sleeve; the steering sleeve is connected to the second end of the second outer tube sleeve.
Optionally, the second outer tube sleeve is fixedly connected with the first outer tube sleeve through a boss.
Optionally, the sealing sleeve and the first outer tube sleeve are glued together by glue.
Optionally, the outer tube and the sleeve structure are glued together or thermoplastic together;
the sealing component and the outer wall of the inner tube are bonded together through glue or hot melt welding.
According to the biopsy rotary cutting device provided by the invention, through the sealing component arranged in the sleeve structure, the communication and the separation of the first communication port and the second communication port can be controlled, so that tumor tissues are sucked into the sample collector by the negative pressure system when the first communication port and the second communication port are separated, and the air pressure in the annular channel is recovered when the first communication port and the second communication port are communicated, so that multiple sampling is realized;
Meanwhile, the sealing component is fixedly arranged on the outer side of the inner tube and is positioned in the annular channel, the positions of the inner tube and the sealing component are relatively fixed, fatigue damage to the sealing component is not directly caused by multiple contact and separation between the inner tube and the sealing component, the sealing effect is prevented from being damaged, the sealing effect can be ensured, the sampling effect is further ensured, and the service life of the biopsy rotary cutting device is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic view of a rotational atherectomy device according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a rotational atherectomy device according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a rotational atherectomy device according to an embodiment of the invention;
FIG. 4 is a schematic structural view of a biopsy rotational atherectomy device according to an embodiment of the present invention;
FIG. 5 is a schematic view showing a structure of a rotary biopsy device according to an embodiment of the present invention;
FIG. 6 is a schematic diagram showing a structure of a biopsy rotational atherectomy device according to an embodiment of the invention;
FIG. 7 is a schematic view of a rotational atherectomy device according to an embodiment of the invention.
FIG. 8 is a schematic view of a rotational atherectomy device according to an embodiment of the invention.
Description of the reference numerals
1-An inner tube;
2-an outer tube;
3-gap;
4-sleeve structure;
41-a first outer tube sleeve;
42-sealing the sleeve;
421-sealing the front end of the sleeve;
43-a second outer tube sleeve;
44-steering sleeve;
A 5-seal assembly;
51-sealing the base;
52-sealing rings;
6-an annular channel;
61-non-occluded channel segment;
611-a first communication port;
62-plugging the channel section;
621-a second communication port;
7-boss.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The technical scheme of the invention is described in detail below by specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.
Referring to fig. 1, the biopsy rotary cutting device provided by the invention comprises an inner tube 1 and an outer tube 2 which are coaxially arranged, wherein the inner tube 1 is positioned at the inner side of the outer tube 2 and can move along the axial direction of the inner tube; a puncture head (not shown in the figure) is arranged at the first end of the outer tube 2, the outer tube 2 is provided with a sampling groove (not shown in the figure), and the sampling groove is communicated with a gap 3 between the inner tube 1 and the outer tube 2 and the inner cavity of the inner tube, and further comprises a sleeve structure 4 and a sealing assembly 5;
The sleeve structure 4 is fixedly connected with the outer tube 2, the sleeve structure 4 is annularly arranged on the outer side of the inner tube 1, an annular channel 6 is formed between the sleeve structure and the inner tube 1, the annular channel 6 is positioned at one end of the outer tube 2 far away from the puncture head along the axial direction of the outer tube 2, and the annular channel 6 comprises a non-blocking channel section 61 and a blocking channel section 62 which are mutually connected; a first communication port 611 is arranged at the first end of the non-plugging channel section 61, the first communication port 611 is directly or indirectly connected with the gap 3, a second end of the non-plugging channel section 62 is connected with the first end of the plugging channel section 61, a second communication port 621 is arranged at the second end of the plugging channel section 61, and the second communication port 621 is directly or indirectly connected with the atmosphere;
the sealing component 5 is fixedly arranged on the outer side of the inner tube 1 and is positioned in the annular channel 6;
when the sealing assembly 5 moves with the inner tube 1 to the non-blocking passage section 61, the first communication port 611 communicates with the second communication port 621;
When the sealing assembly 5 moves to the plugging channel section 62, the sealing assembly 5 is plugged in the plugging channel section 62, and the first communication port 611 and the second communication port 621 are blocked.
Wherein the movement of the sealing assembly 5 with the inner tube 1 to the non-occluded channel segment 61 can be understood as: the sealing assembly 5 completely leaves the plugging channel section 62, any part of the sealing assembly 5 is not contacted with the inner channel wall of the plugging channel section 62, the first communication port 611 is communicated with the second communication port 621, at this time, the atmosphere can enter the non-plugging channel section 61 through the second communication port 621 and the plugging channel section 62, and then enter the gap 3 between the inner tube 1 and the outer tube 2 through the first communication port 611;
when the sealing assembly 5 moves to the plugging channel section 62, the sealing assembly 5 is plugged in the plugging channel section 62, which can be understood as: the seal assembly 5 is completely clear of the non-plugged channel segment 61, and no part of the seal assembly 5 is in contact with the channel inner wall of the non-plugged channel segment 61; the first communication port 611 and the second communication port 621 are blocked, and at this time, the air cannot enter the non-blocking passage section 61 through the second communication port 621, and thus cannot enter the gap 3 between the inner ring 1 and the outer tube 2 through the first communication port.
In one embodiment, referring to fig. 2 to 4, the sealing assembly 5 includes: a seal base 51 and a seal ring 52; the sealing base 51 (for example, the bottom of the sealing base is fixed on the outer wall of the inner tube 1), and the sealing ring 52 is sleeved on the outer side of the sealing base 51;
In one example, the seal base 51 has a groove in which the seal ring 52 is mounted; the groove may be an annular groove, and the cross-sectional shape thereof may be rectangular or semicircular, so long as the seal ring 52 can be fixed to the seal base 51, without departing from the scope of the embodiment of the present invention.
For example, the sealing ring 52 may be made of rubber or other materials such as silica gel.
The diameter of the inner wall of the plugging channel section 62 is smaller than or equal to the outer diameter of the sealing assembly 5, and the diameter of the inner wall of the non-plugging channel section 61 is larger than the outer diameter of the sealing assembly 5;
referring to fig. 2, when the sealing assembly 5 moves to at least a part of the sealing position of the plugging channel section 62, the outer side of the sealing ring 52 is in fit with and sealed with the inner wall of the plugging channel section 62;
It can be seen that the atmosphere is blocked by the seal assembly 5 as the seal assembly 5 moves to at least a partial position occluding the channel section 62.
Referring to fig. 3, when the sealing assembly 5 moves to at least a partial position of the non-blocking channel section 61, there is a space between the outer side of the sealing ring 52 and the inner wall of the non-blocking channel section 61.
It can be seen that when the sealing assembly 5 is moved to at least a partial position of the non-plugged channel segment 61, the atmosphere is able to enter the first communication port 611, and thus the gap 3 between the inner tube 1 and the outer tube 2, via the space between the outside of the sealing ring 52 and the channel inner wall of the non-plugged channel segment 61.
In an exemplary operation, when the inner tube 1 moves axially and backwardly, the sealing assembly 5 moves backwardly along the inner tube 1, and when the sealing assembly 5 is positioned at the plugging channel section 62, the negative pressure system is started to make the inner cavity of the inner tube 1 be at negative pressure, so that the tissue in the sampling groove is sucked into the inner cavity of the inner tube 1, and finally reaches the sample collector arranged at the tail end of the inner tube 1, and one-time sampling is completed.
Before resampling, the inner tube 1 moves forward along the axial direction, the sealing assembly 5 moves forward along the inner tube 1, when the sealing assembly 5 is positioned at the non-plugging channel section 61, the atmosphere enters the annular channel 6 from the second communication port 621, enters the gap 3 through the first communication port 611, and enters the inner cavity of the inner tube 1 through the sampling groove to complete the recovery of air pressure, so that when the negative pressure system is restarted, a pressure difference can be formed, and tissues are sucked into the sample collector.
Therefore, through the above technical solution, the biopsy rotary cutting device provided by the invention can control the communication and the separation of the first communication port 611 and the second communication port 621 through the sealing component 5 arranged in the sleeve structure 4, so that the tumor tissue is sucked into the sample collector by the negative pressure system when the first communication port 611 and the second communication port 621 are separated, and the air pressure in the annular channel is recovered when the first communication port 611 and the second communication port 621 are communicated, so that the biopsy rotary cutting device can be sampled for multiple times;
Meanwhile, the sealing component 5 provided by the invention is fixedly arranged on the outer side of the inner tube 1 and is positioned in the annular channel 6, the positions of the inner tube 1 and the sealing component 5 are relatively fixed, fatigue damage to the sealing component 5 is not directly caused by repeated contact and separation between the inner tube 1 and the sealing component 5, the sealing effect is prevented from being damaged, the sealing effect can be ensured, the sampling effect is further ensured, and the service life of the biopsy rotary cutting device is prolonged.
In one embodiment, referring to fig. 4, the non-plugging channel section 61 includes a gradual channel section, a first end of the gradual channel section is connected to the gap 3, and a second end of the gradual channel section is connected to the plugging channel section 62;
the diameter of the inner wall of the graded channel section gradually becomes smaller along the direction from the first end to the second end of the graded channel section (i.e., the direction from left to right in fig. 4).
In one example, the diameter of the second end of the tapered channel is equal to the diameter of the inner wall of the plugged channel segment 62, and the diameter of the first end of the tapered channel is greater than the diameter of the inner wall of the plugged channel segment 62. In other examples, the diameters of the first and second ends of the tapered channel are both greater than the diameter of the inner wall of the plugged channel segment 62.
In one embodiment, referring to fig. 5, the number of the first communication ports 611 is plural, and the plural first communication ports 611 are uniformly distributed around the axial center of the inner tube 1.
In one example, the number of the first communication ports 611 may be 6, 8, or other numbers.
In one embodiment, referring to fig. 6, the sleeve assembly 4 includes a first outer tube sleeve 41 and a sealing sleeve 42;
The first outer tube sleeve 41 is connected to one end of the outer tube 2 away from the puncture head, and the first end of the sealing sleeve 42 is fixedly connected to one side of the first outer tube sleeve 41 away from the puncture head and is annularly arranged outside the inner tube 1; the annular channel 6 is formed between the sealing sleeve 41 and the inner tube 1;
Wherein the sealing sleeve 42 is inside the sleeve structure 4, the annular channel 6 can be understood as: a space formed between the inner wall of the sealing sleeve 42 of the inner tube 1 and the outer wall of the inner tube 1 is annularly arranged on one side of the first outer tube sleeve 41 away from the puncture head; the inner shell of the sealing sleeve 42 forms the non-plugged channel segment 61 and the plugged channel segment 62 described above;
The first communication port 611 is provided in the first outer tube sleeve 41;
In one example, the first communication port 611 is provided on the inner wall of the first outer tube sleeve 41, and in other examples, may be provided at other positions of the first outer tube sleeve 41, as long as the first communication port can communicate with the gap 3 and the annular channel 6 before the inner tube 1 and the outer tube 2, without departing from the scope of the embodiment of the present invention.
The second communication port 621 is provided at the second end of the sealing sleeve 42, and may be located on a side of the sealing sleeve 42 away from the axis, or may be located on a side of the sealing sleeve 42 near the axis, so long as the sealing assembly 5 can be sealed when the sealing assembly 5 is in the sealing channel section 62, and the sealing assembly 5 is in the non-sealing channel section 61 and is in communication with the first communication port 611, without departing from the scope of the embodiment of the present invention.
In one embodiment, referring to fig. 7, the sleeve assembly 4 further includes a second outer tube sleeve 43 and a steering sleeve 44;
The first end of the second outer tube sleeve 43 is fixedly connected to one side of the first outer tube sleeve 41 away from the puncture head, and is annularly arranged outside the sealing sleeve 42; the steering sleeve 44 is connected to a second end of the second outer tube sleeve 43. Wherein the steering sleeve 44 is used for driving the outer tube 2 in a rotational movement in the circumferential direction.
In one embodiment, referring to fig. 8, the second outer tube sleeve 43 is fixedly connected to the first outer tube sleeve 41 through the boss 7.
In one embodiment, the sealing sleeve 42 and the first outer tube sleeve 41 are glued together by glue.
Specifically, referring to fig. 8, the front end surface 421 of the sealing sleeve 42 may be glued with glue to the inner wall of the first outer tube sleeve 41.
In one embodiment, the outer tube 2 and the sleeve structure 4 are glued together or thermoplastic together;
Specifically, the inner wall of the first outer tube sleeve 41 may be glued with the outer wall of the outer tube 2 by glue, and the first outer tube sleeve 41 may be made of a thermoplastic material, and may be thermoplastic to the outer wall of the outer tube 2.
The sealing component 5 and the outer wall of the inner tube 1 are bonded together by glue or hot melt welding;
in particular, the sealing base 51 (for example, the bottom of the sealing base) may be fixed to the outer wall of the inner tube 1 by means of glue or hot-melt welding.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (6)
1. A biopsy rotary cutting device, comprising an inner tube and an outer tube which are coaxially arranged, wherein the inner tube is positioned on the inner side of the outer tube and can move along the axial direction of the inner tube; the first end of the outer tube is provided with a puncture head, the outer tube is provided with a sampling groove, and the sampling groove is communicated with a gap between the inner tube and the outer tube and an inner cavity of the inner tube, and the puncture device is characterized by further comprising a sleeve structure and a sealing assembly;
The sleeve structure is fixedly connected with the outer tube, the sleeve structure is arranged on the outer side of the inner tube in a surrounding mode, an annular channel is formed between the sleeve structure and the inner tube, the annular channel is located at one end, far away from the puncture head, of the outer tube along the axial direction of the outer tube, and the annular channel comprises a non-blocking channel section and a blocking channel section which are connected with each other; the first end of the non-plugging channel section is provided with a first communication port which is directly or indirectly connected with the gap, the second end of the non-plugging channel section is connected with the first end of the plugging channel section, the second end of the plugging channel section is provided with a second communication port which is directly or indirectly connected with the atmosphere;
the sealing component is fixedly arranged on the outer side of the inner tube and is positioned in the annular channel;
when the sealing assembly moves to the non-plugging channel section along with the inner tube, the first communication port is communicated with the second communication port;
when the sealing assembly moves to the plugging channel section, the sealing assembly plugs in the plugging channel section, and the first communication port and the second communication port are blocked;
the seal assembly includes: a sealing base and a sealing ring; the sealing base is fixed on the outer wall of the inner tube, and the sealing ring is sleeved on the outer side of the sealing base;
The diameter of the inner wall of the plugging channel section is smaller than or equal to the outer diameter of the sealing assembly, and the diameter of the inner wall of the non-plugging channel section is larger than the outer diameter of the sealing assembly;
when the sealing assembly moves to at least part of the plugging channel section, the outer side of the sealing ring is in fit sealing with the inner wall of the plugging channel section;
When the sealing assembly moves to at least part of the position of the non-plugging channel section, a space is reserved between the outer side of the sealing ring and the inner wall of the non-plugging channel section;
The number of the first communication ports is multiple, and the first communication ports are uniformly distributed around the axis of the inner pipe in the circumferential direction;
The sleeve structure comprises a first outer tube sleeve and a sealing sleeve;
The first outer tube sleeve is connected to one end of the outer tube, far away from the puncture head, and the first end of the sealing sleeve is fixedly connected to one side, far away from the puncture head, of the first outer tube sleeve and is annularly arranged on the outer side of the inner tube; the annular channel is formed between the sealing sleeve and the inner tube;
the first communication port is arranged on the first outer tube sleeve;
the second communication port is arranged at the second end of the sealing sleeve.
2. The rotational atherectomy device of claim 1, wherein the non-occluded passage segment comprises a graduated passage segment, a first end of the graduated passage segment being in communication with the gap, a second end of the graduated passage segment being connected to the occluded passage segment;
Along the direction from the first end to the second end of the gradual change channel section, the diameter of the inner wall of the gradual change channel section gradually becomes smaller.
3. The rotational atherectomy device of claim 1, wherein the sleeve structure further comprises a second outer tube sleeve and a steering sleeve;
The first end of the second outer tube sleeve is fixedly connected to one side, far away from the puncture head, of the first outer tube sleeve, and is annularly arranged on the outer side of the sealing sleeve; the steering sleeve is connected to the second end of the second outer tube sleeve.
4. The rotational atherectomy device of claim 3, wherein the second outer tube sleeve is fixedly connected to the first outer tube sleeve by a boss.
5. The rotational atherectomy device of claim 3, wherein the sealing sleeve and the first outer tube sleeve are glued together by glue.
6. The rotational atherectomy device of any one of claims 1-3, wherein the outer tube and the sleeve structure are bonded together or thermoplastic together by glue;
the sealing component and the outer wall of the inner tube are bonded together through glue or hot melt welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011294619.XA CN112545576B (en) | 2020-11-18 | 2020-11-18 | Biopsy rotary cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011294619.XA CN112545576B (en) | 2020-11-18 | 2020-11-18 | Biopsy rotary cutting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112545576A CN112545576A (en) | 2021-03-26 |
| CN112545576B true CN112545576B (en) | 2024-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011294619.XA Active CN112545576B (en) | 2020-11-18 | 2020-11-18 | Biopsy rotary cutting device |
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| CN216797704U (en) * | 2020-11-18 | 2022-06-24 | 上海导向医疗系统有限公司 | Biopsy rotary cutting device |
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| IT1252234B (en) * | 1991-12-18 | 1995-06-05 | Bauer Di Bauer Albeto | DEVICE FOR THE SAFE PERFORMANCE OF A BIOPSY, IN PARTICULAR OSTEO-BONE MARROW |
| DE102006021974A1 (en) * | 2006-05-03 | 2007-11-08 | Karl Storz Gmbh & Co. Kg | Seal for a trocar sleeve and such Trokarhülse |
| US20180000465A1 (en) * | 2015-02-02 | 2018-01-04 | Yale University | Integrated painless bone marrow biopsy device |
| CN104758009B (en) * | 2015-04-09 | 2017-03-29 | 上海三埃弗电子有限公司 | A kind of single negative pressure source list air flue rotary cutting apparatus |
| CN109330632B (en) * | 2018-11-09 | 2023-09-29 | 上海导向医疗系统有限公司 | Biopsy rotary cutting device |
| CN109330633B (en) * | 2018-11-09 | 2023-10-10 | 上海导向医疗系统有限公司 | Biopsy rotary cutting device |
| CN210384001U (en) * | 2020-03-16 | 2020-04-24 | 常州固立高端装备创新中心有限公司 | Sleeve and puncture outfit |
| CN111938775B (en) * | 2020-08-17 | 2021-11-05 | 中国人民解放军总医院第八医学中心 | Puncture tube assembly with rotary bolt |
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| CN216797704U (en) * | 2020-11-18 | 2022-06-24 | 上海导向医疗系统有限公司 | Biopsy rotary cutting device |
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