CN209377629U - Biopsy rotary cutting apparatus - Google Patents
Biopsy rotary cutting apparatus Download PDFInfo
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- CN209377629U CN209377629U CN201821850533.9U CN201821850533U CN209377629U CN 209377629 U CN209377629 U CN 209377629U CN 201821850533 U CN201821850533 U CN 201821850533U CN 209377629 U CN209377629 U CN 209377629U
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- knife pipe
- pipeline section
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- pipe
- cutting edge
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Abstract
The utility model provides a kind of biopsy rotary cutting apparatus, including the dynamic seal structure being set on the outside of the interior knife pipe；The dynamic seal structure is formed outside the interior knife pipe free chamber, the interior knife pipe includes the first pipeline section and the second pipeline section, the outer diameter of second pipeline section is less than the outer diameter of first pipeline section, sealing ring is equipped in the dynamic seal structure, the cavity includes the first cavity and the second cavity, when the interior knife pipe is moved along its axis to first position, the sealing ring is in the outside of second pipeline section, and there is gap between chamber between the sealing ring and second pipeline section, to be connected to first cavity and second cavity.The utility model can introduce atmosphere, formed and intensity more preferably circulation airflow is sucked out；The circulation airflow can more efficiently send the tissue under the rotary-cut of corresponding position to the sample collecting device of rear end, effectively increase out sample rate.
Description
Technical field
The utility model relates to medical instruments field more particularly to a kind of biopsy rotary cutting apparatus.
Background technique
Biopsy rotary cutting apparatus is widely used in minimally invasive surgery puncturing operation, firstly, may insure hand using cutter head is punctured
Art wound is small, does not need suture needle, can meet diagnosis and treatment requirement, moreover it is possible to ensure the beauty in shape, especially some breast or face
Portion etc., the surface of a wound is small to heal well, leaves the advantages that scar is small, and damage is small, recovery is fast, therefore is more susceptible to most of female friends'
It welcomes.And vacuum is defeated helps the biopsy of mammary gland sample and rotary-cut is one of the most effective mode currently used for breast biopsy procedure, needs
Mammary gland suspicious lesions are carried out to repeat cutting, to obtain the histological specimen of enough mammary gland, in order to the early detection of breast cancer
And diagnosis, while the minimally invasive excision of mammary gland benign tumor can also be carried out.
Rotary cutting apparatus head is punctured using the puncturing head of minor diameter, and it is coaxially solid to puncture head-tail and outer knife tube head
It is fixed.Outer knife pipe is coated at outside the interior knife pipe coaxially assembled.Outer knife tube head has cutter groove, punctures knife tube head in front of completing and is in
Distalmost end, interior knife pipe rotation is stepped back after the completion of puncturing, and cutter groove is opened, and tumor tissues are sucked cutter groove by negative pressure system at the same time.
Interior knife tube head is provided with inner chamfer cutting edge, and interior knife pipe is rotationally advancing after the completion of tissue adsorptions, rotary-cut is carried out to tissue, under cutting off
Tissue is drawn into the collection containers of rotary cutting apparatus tail portion by lasting negative pressure via interior knife tube cavity.
Rotary cutting apparatus mainly pass through negative pressure system by the tumor tissues cut be sucked out, or can be understood as using cutter groove with
Tissue is transported sample collection container by the pressure difference between system.However, after completing primary absorption excision work, cutter groove week
The pressure enclosed is equal to the pressure in interior knife pipe, and entire knife group is in isopiestic state, and the tissue for adsorbing excision is not easy to from cutter groove stream
Out to sample collecting device, thus the problem for causing out sample ineffective.
Utility model content
The utility model provides a kind of biopsy rotary cutting apparatus, has decided the ineffective problem of sample with solution.
It is according to the present utility model in a first aspect, provide a kind of biopsy rotary cutting apparatus, the interior knife pipe including coaxial arrangement
With outer knife pipe, the interior knife pipe is located on the inside of the outer knife pipe, and the head end of the outer knife pipe is equipped with puncturing head, the interior knife pipe
One end direct or indirect connection sample collecting device far from the puncturing head；The device further includes being set on the outside of the interior knife pipe
Dynamic seal structure；
The dynamic seal structure is formed outside the interior knife pipe free chamber, and the interior knife pipe includes the first pipeline section and second
One end close to the puncturing head of pipeline section, second pipeline section is set to one far from the puncturing head of first pipeline section
End, the outer diameter of second pipeline section are less than the outer diameter of first pipeline section, and sealing ring is equipped in the dynamic seal structure, described
Cavity include positioned at the sealing ring close to the side of the puncturing head the first cavity with positioned at the separate of the sealing ring
Second cavity of the side of the puncturing head, first cavity be connected to the first pipeline section outer wall and the outer knife inside pipe wall it
Between pipe between gap；The one end close to the puncturing head in gap is connected to the inner space of the interior knife pipe between the pipe；
When the interior knife pipe is moved along its axis to first position, the sealing ring is in the outside of second pipeline section,
And there is gap between chamber between the sealing ring and second pipeline section, to be connected to first cavity and second cavity；
When the interior knife pipe is moved along its axis to the second position, the sealing ring is in the outside of first pipeline section,
And it is in sealing contact between the sealing ring and first pipeline section, to separate first cavity and second cavity.
Optionally, one end close to the puncturing head of first pipeline section is equipped with cutting edge structure, and the outer knife pipe leans on
The wall portion of the nearly puncturing head is arranged with cutter groove, one end direct or indirect connection far from the puncturing head of the interior knife pipe
Sample collecting device；
When the interior knife pipe is moved along its axis to the first position, the cutting edge structure is in the cutter groove；Institute
When stating interior knife pipe and moving along its axis to the second position, the cutting edge structure is not on the inside of the cutter groove.
Optionally, the device, further includes the louver being axially arranged along the interior knife pipe, and the louver is set to
The cutting edge structure, or it is set to the cutting edge structure and first pipeline section, the louver is connected to the cutting edge structure
Gap between inner space and the pipe, the inner space of the cutting edge structure are connected to the inner space of first pipeline section.
Optionally, the quantity of the louver is multiple, and multiple louvers are uniformly distributed around the axial direction of the interior knife pipe.
Optionally, the louver includes and being respectively arranged on described along the main seam portion of the interior knife pipe being axially arranged
The rounded ends at main seam portion both ends.
Optionally, the cutting edge structure includes cricoid cutting edge interconnecting piece and blade tip portion, and the blade tip portion is set to the sword
One end close to the puncturing head of mouthful interconnecting piece, one end connection far from the puncturing head of the cutting edge interconnecting piece described the
One end close to the puncturing head of one pipeline section.
Optionally, the outer diameter of the cutting edge interconnecting piece is greater than the outer diameter of first pipeline section, less than in the outer knife pipe
Diameter.
Optionally, the diameter of the end close to the puncturing head in the blade tip portion is greater than the internal diameter of the outer knife pipe.
Optionally, the dynamic seal structure includes sealed base and seal sleeve, and the sealed base is fixedly connected on
Outside the outer knife pipe, the seal sleeve is fixedly connected with the sealed base, the seal sleeve and the sealed base edge
The axial direction of the interior knife pipe has installation gap, and the sealing ring is installed on the installation gap, and the seal sleeve is located at institute
It states on the outside of interior knife pipe, first cavity is located in the sealed base, and second cavity is located in the seal sleeve.
Optionally, the seal sleeve includes sleeve body and cylinder interconnecting piece, and the sleeve connection portion is set to the set
The side close to the puncturing head of cylinder ontology, the outside of the sealed base is fixedly connected on the inside of the sleeve connection portion,
The sleeve body and the sealed base are arranged along the axially spaced-apart of the interior knife pipe, to form the installation gap.
Biopsy rotary cutting apparatus provided by the utility model, be directed to out sample it is ineffective situation discovery, can pass through by
Atmosphere introduces from the external world and breaks isopiestic state, so that tissue can be efficiently sucked out, wherein the utility model passes through
Dynamic seal structure and sealing ring therein, provide one can gap is connected between pipe between inner and outer pipes the first cavity, with
And the second cavity that can be connected to ambient atmosphere；In rotary-cut, when interior knife pipe is moved to the second position, the first cavity and second
Cavity is closed by sealing ring, can be drawn tissue into cutter groove under encapsulation situations, after rotary-cut, is generated around cutter groove in interior knife pipe
Pressure it is suitable, when interior knife pipe is moved to first position, the first cavity and the second cavity are by between the chamber outside the second pipeline section
Gap connection, can introduce atmosphere, form suction intensity more preferably circulation airflow, circulation airflow and successively pass through the second cavity, chamber
Between gap between gap, the first cavity, pipe, and through one end of the close puncturing head in gap between pipe enter interior knife pipe in, the circulation gas
Stream can more efficiently send the tissue under rotary-cut to the sample collecting device of rear end, effectively increase out sample rate.
Meanwhile the utility model the first cavity and the second cavity be being axially distributed along interior knife pipe, gap between chamber
It is being axially set between the first cavity and the second cavity along interior knife pipe, so, the whole flow direction of produced air-flow
It is situations such as larger bending will not occur, both to have maintained along axial direction and flowed to consistency with higher, and also avoided gas stream
The increase of dynamic stroke, can further improve the efficiency of tissue conveying, is conducive to improve out sample rate.
The connection and partition of first cavity and the second cavity in the utility model are brought by the movement of interior knife pipe itself
, during which without separately introducing other based on artificial or mechanical manipulation, it on the one hand can ensure the timeliness of connection and partition, separately
On the one hand, it can also reduce connection and the movement of the internal knife pipe of partition itself causes the adverse effect of such as resistance.
Further, since the utility model is without introducing other based on artificial or mechanical manipulation, the utility model can also be kept away
Exempt from the degree of wear that other manipulations increase structure, i.e. the utility model can be beneficial to reduce abrasion, slow down aging speed, and raising makes
With the service life, to advantageously reduce maintenance cost.
Simultaneously as the utility model is not necessarily to introduce other machinery such as reset components, driving part for manipulation
Structure, also can tightness between effective guarantee dynamic seal structure, knife pipe etc., to meet rotary-cut process medium-high speed sports
Demand (because peeling knife rotation speed quickly, can achieve such as r=300rpm each second).
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the status diagram one of biopsy rotary cutting apparatus in an embodiment of the present invention；
Fig. 2 is the status diagram two of biopsy rotary cutting apparatus in an embodiment of the present invention；
Fig. 3 is the status diagram one of biopsy rotary cutting apparatus in another embodiment of the utility model；
Fig. 4 is the partial enlargement diagram of a-quadrant in Fig. 3；
Fig. 5 is the partial enlargement diagram in the region C in Fig. 4；
Fig. 6 is the partial enlargement diagram of B area in Fig. 3；
Fig. 7 is the status diagram two of biopsy rotary cutting apparatus in another embodiment of the utility model；
Fig. 8 is the partial enlargement diagram in the region D in Fig. 7；
Fig. 9 is the distribution schematic diagram of louver in an embodiment of the present invention.
Description of symbols:
1- puncturing head；
The outer knife pipe of 2-；
21- cutter groove；
Knife pipe in 3-；
The first pipeline section of 31-；
The second pipeline section of 32-；
33- cutting edge structure；
331- cutting edge interconnecting piece；
332- blade tip portion
The end 333-；
The outer inclined-plane 334-；
335- outer inclined-plane；
34- louver；
The main seam portion 341-；
342- rounded ends；
4- dynamic seal structure；
The first cavity of 41-；
The second cavity of 42-；
43- sealing ring；
44- sealed base；
45- seal sleeve；
451- cylinder interconnecting piece；
452- sleeve body；
Gap between 46- chamber；
Gap between 5- pipe；
End spaces after 6-；
7- dial structure；
71- driver plate ontology；
72- driver plate pedestal；
8- after sleeves.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The specification and claims of the utility model and term " first ", " second ", " third " in above-mentioned attached drawing
(if present)s such as " the 4 " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It answers
The data that the understanding uses in this way are interchangeable under appropriate circumstances, so that the embodiments of the present invention described herein can
Implemented with the sequence other than those of illustrating or describing herein.In addition, term " includes " and " having " and they
Any deformation, it is intended that cover it is non-exclusive include, for example, containing the process, method of a series of steps or units, being
System, product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include be not clearly listed or
For the intrinsic other step or units of these process, methods, product or equipment.
The technical solution of the utility model is described in detail with specifically embodiment below.These are specific below
Embodiment can be combined with each other, and the same or similar concept or process may be repeated no more in some embodiments.
Fig. 1 is the status diagram one of biopsy rotary cutting apparatus in an embodiment of the present invention；Fig. 2 is the utility model one
The status diagram two of biopsy rotary cutting apparatus in embodiment.
Please refer to Fig. 1 and Fig. 2, biopsy rotary cutting apparatus, interior knife pipe 3 and outer knife pipe 2 including coaxial arrangement, the interior knife pipe
3 are located at 2 inside of outer knife pipe, and the head end of the outer knife pipe 2 is equipped with puncturing head 1, the separate puncturing head of the interior knife pipe 3
1 one end direct or indirect connection sample collecting device, the direct or indirect connection, it will be appreciated that for the tissue in interior knife pipe 3 can be passed
Transport to sample collecting device.
The wall portion close to the puncturing head 1 of outer knife pipe 2 is arranged with cutter groove 21, corresponding, the close puncture of interior knife pipe 3
One end of head has cutting edge structure 33, and cutter groove 21 is used to for tumor tissues being adsorbed onto outer knife pipe 2, in turn, sucking cutter groove 21
Tissue can be cut by cutting edge structure 33, the tissue after cutting because in cutter groove 21 external pressure it is suitable, and be susceptible to move, it is described
One end direct or indirect connection sample collecting device far from the puncturing head 1 of interior knife pipe 3.The sample collecting device may be configured with external negative pressure
System.In segmentation scheme, inside and outside differential pressure can be changed by the intensity of the negative pressure of raising negative pressure system.
In the present embodiment, the device further includes the dynamic seal structure 4 set on interior 3 outside of knife pipe；It is described dynamic
State sealing structure 4 is formed outside the interior knife pipe 3 free chamber, and the interior knife pipe 3 includes the first pipeline section 31 and the second pipeline section 32, institute
The one end close to the puncturing head 1 for stating the second pipeline section 32 is set to one end far from the puncturing head 1 of first pipeline section 31,
The outer diameter of second pipeline section 32 is less than the outer diameter of first pipeline section 31, is equipped with sealing ring 43 in the dynamic seal structure 4,
The cavity includes positioned at the first cavity 41 of the side close to the puncturing head 1 of the sealing ring 43 and positioned at the sealing
Second cavity 42 of the side far from the puncturing head 1 of circle 43, first cavity 41 are connected to 31 outer wall of the first pipeline section
Gap 5 between pipe between outer 2 inner wall of knife pipe；Described in the one end close to the puncturing head 1 in gap 5 is connected between the pipe
The inner space of interior knife pipe 3.
Wherein, one end of the close puncturing head 1 in gap 5 also is understood as drawing in turn close to one end of cutter groove 21 between pipe
When entering atmosphere, the air-flow generated can more effectively act on the tissue near cutter groove 21.
When the interior knife pipe 3 is moved along its axis to first position, the sealing ring 43 is in second pipeline section 32
Outside, and there is gap 46 between chamber between the sealing ring 43 and second pipeline section 32, be connected to first cavity 41 with
Second cavity 42.
When the interior knife pipe 3 is moved along its axis to the second position, the sealing ring 43 is in first pipeline section 31
Outside, and in sealing contact between the sealing ring 43 and first pipeline section 31, to separate first cavity 41 and described the
Two cavitys 42.
First cavity 41 and the second cavity 42, it will be appreciated that be the annular housing for being located on interior 3 outside of knife pipe, along interior knife pipe
3 axial direction is sequentially distributed, and the first cavity 41 can be gap 5 be connected between pipe cavity, the second cavity 42 can be indirect or
The cavity being directly connected to outside atmosphere, such as outside atmosphere, in turn, the first cavity 41 and second are connected to by rear end spaces 6
When cavity 42 is connected to, outside atmosphere can be introduced.
First position, it will be appreciated that be any position that gap 46 is connected to the first cavity 41 and the second cavity 42 between enabling to chamber
It sets, is specifically as follows the position that cutting edge structure 33 is located in the cutter groove 21 of outer knife pipe 2, i.e., the described interior knife pipe 3 moves along its axis
When to the first position, the cutting edge structure 33 is in the cutter groove 21.
The second position, it will be appreciated that be any position that gap 46 separates the first cavity 41 and the second cavity 42 between enabling to chamber
It sets, is specifically as follows position of the cutting edge structure 33 not in the cutter groove 21 of outer knife pipe 2, i.e., the described interior knife pipe 3 is axially moved along it
When moving to the second position, the cutting edge structure 33 is not at 21 inside of cutter groove.At this point, the negative pressure that system provides is enough
Tissue is allowed to be flowed into cutter groove 21.
Cutting edge structure 33 can be set to one end close to the puncturing head 1 of first pipeline section 31.
Biopsy rotary cutting apparatus provided in this embodiment is directed to out the ineffective situation discovery of sample, can be by will be big
Gas introduces from the external world and breaks isopiestic state, so that tissue can be efficiently sucked out, wherein the utility model passes through dynamic
State sealing structure and sealing ring therein, provide one can gap is connected between pipe between inner and outer pipes the first cavity, and
The second cavity that can be connected to ambient atmosphere；In rotary-cut, when interior knife pipe is moved to the second position, the first cavity and the second chamber
Body is closed by sealing ring, can be drawn tissue into cutter groove under encapsulation situations, after rotary-cut, around cutter groove with generate in interior knife pipe
Pressure is suitable, and when interior knife pipe is moved to first position, the first cavity and the second cavity pass through gap between the chamber outside the second pipeline section
Connection, can introduce atmosphere, form suction intensity more preferably circulation airflow, circulation airflow and successively pass through between the second cavity, chamber
Gap between gap, the first cavity, pipe, and enter in interior knife pipe through one end of the close puncturing head in gap between pipe, the circulation airflow
More efficiently the tissue under rotary-cut can be sent to the sample collecting device of rear end, effectively increase out sample rate.
Meanwhile the present embodiment the first cavity and the second cavity be being axially distributed along interior knife pipe, gap is also between chamber
Along being axially set between the first cavity and the second cavity for interior knife pipe, so, the whole flow direction of produced air-flow is also
Along axial, situations such as larger bending will not occur, both maintained and flowed to consistency with higher, and also avoided gas flowing
The increase of stroke can further improve the efficiency of tissue conveying, be conducive to improve out sample rate.
The connection and partition of first cavity and the second cavity in the present embodiment are brought by the movement of interior knife pipe itself
, during which without separately introducing other based on artificial or mechanical manipulation, it on the one hand can ensure the timeliness of connection and partition, separately
On the one hand, it can also reduce connection and the movement of the internal knife pipe of partition itself causes the adverse effect of such as resistance.
Further, since the present embodiment is without introducing other based on artificial or mechanical manipulation, the present embodiment also can avoid it
He manipulates the degree of wear for increasing structure, i.e. the present embodiment can be beneficial to reduce abrasion, slow down aging speed, improves and uses the longevity
Life, to advantageously reduce maintenance cost.
Simultaneously as the present embodiment is not necessarily to introduce other such as reset components, driving part for the mechanical knot of manipulation
Structure, also can tightness between effective guarantee dynamic seal structure, knife pipe etc., to meet the need of rotary-cut process medium-high speed sports
Ask (because peeling knife rotation speed quickly, can achieve such as r=300rpm each second).
Fig. 3 is the status diagram one of biopsy rotary cutting apparatus in another embodiment of the utility model；Fig. 4 is a-quadrant in Fig. 3
Partial enlargement diagram；Fig. 5 is the partial enlargement diagram in the region C in Fig. 4；Fig. 6 is that the partial enlargement of B area in Fig. 3 shows
It is intended to；Fig. 7 is the status diagram two of biopsy rotary cutting apparatus in another embodiment of the utility model；Fig. 8 is the region D in Fig. 7
Partial enlargement diagram.
In the present embodiment, Fig. 1, Fig. 2, Fig. 3, Fig. 6, Fig. 7 and Fig. 8 are please referred to, interior knife pipe 3 is rotated to progress into distalmost end position
It sets, i.e. left end shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 7, the cutter groove 21 of outer knife pipe 2 is by the head of interior knife pipe 3 at this time, such as includes sword
The part of mouth structure 33 occupies, which can be understood as penetration phase, specifically refers to the understanding of position shown in Fig. 2 and Fig. 3,
It can be regarded as the first position.
After the completion of puncture, interior knife pipe 3 retreats to position shown in Fig. 1, Fig. 7 and Fig. 8, also is understood as retreating to second
It sets, at this point, cutter groove 21 is not blocked on the head of such as cutting edge structure 33 just, which is that the rank of tissue is adsorbed after the completion of puncturing
Section, at this point, the first cavity 41 is spaced with the second cavity 42, gap 5, the inside of cutting edge structure 33 are empty between the first cavity 41, pipe
Between and the inner space of the first pipeline section 31 be sequentially communicated, and seal and separate with the second cavity 42, can be by group using negative pressure system
It knits and is drawn into cutter groove 21, after tissue is inhaled into cutter groove 21, interior knife pipe 3 repeats the movement being rotationally advancing, and reaches Fig. 2 and Fig. 3
Shown position, i.e., screw into first position again, and during being somebody's turn to do, the tissue of sucking is cut off by cutting edge structure 33.
With the advance of interior knife pipe 3, sealing ring 43 arrives again at the outside of the second pipeline section 32, to form gap between chamber
46, the atmosphere successively inside through gap 5 between gap 46, the first cavity 41, pipe between the second cavity 42, chamber, cutting edge structure 33 at this time
The inner space of space and the first pipeline section 31, which is formed, is sucked out intensity more preferably circulation airflow, in turn, organizes by lasting negative pressure
Propagation in atmosphere with introducing completes the collection of primary structure to sample collecting device.
Wherein, after completing primary absorption with rotary-cut, the pressure around cutter groove 21 is equal to the pressure in interior knife pipe 3, also etc.
In the negative pressure of system, when flowing into cutter groove 21 from the external world without additional atmosphere, entire knife group is in isopiestic state, adsorbs excision
Tissue can not or be difficult to flow out to sample collecting device from cutter groove 21.So present embodiment effectively realizes group by introducing atmosphere
The outflow knitted.
As it can be seen that above procedure completes the period of one-time puncture, absorption, rotary-cut, collection, then interior knife pipe 3 can be weighed repeatedly
Some or all of multiple previous period movement, until the tissue of required excision is cut off clean.
Wherein, between the inner space and pipe in order to realize cutting edge structure 33 gap 5 connection, the present embodiment optinal plan
In, it can be different according to the structure of one end cutting edge structure 33 of the first pipeline section 31, realize gap 5 and interior knife pipe between different communicating pipes
The mode of 3 inner spaces.
In one of embodiment, there can be interval between the periphery of cutting edge structure 33 and outer 2 inner wall of knife pipe, in turn,
Gap 5 can be communicated to the space of the side of the close puncturing head 1 of cutting edge structure 33 by the interval between pipe, i.e., cutting edge structure 33 with
The space in outer knife pipe 2 between puncturing head 1, and then it is communicated to the inner space of cutting edge structure 33.Other optional embodiments
In, 33 periphery of cutting edge structure can also without interval or the relatively closely spaced, meanwhile, no interval, which may further be, to be unlikely in obstruction
The structure type that knife pipe 3 moves in outer knife pipe 2.
Referring to FIG. 4, and combine other accompanying drawings, gap 5 can be by being set to 33 louver 34 of cutting edge structure and cutting edge between pipe
It is connected on the inside of structure 33.It can be regarded as: the device, may also include the ventilation being axially arranged along the interior knife pipe 3
Seam 34, the louver 34 are set to the cutting edge structure 33, or are set to the cutting edge structure 33 and first pipeline section 31, institute
It states louver 34 and is connected to gap 5 between the inner space and the pipe of the cutting edge structure 33, the inside of the cutting edge structure 33 is empty
Between be connected to the inner space of first pipeline section 31.
The setting of louver 34, no matter can ensure whether gap 5 can be connected by the interval in 33 outside of cutting edge structure between pipe
The space of the side of the close puncturing head 1 of cutting edge structure 33 is led to, present embodiment is able to achieve the close puncture in gap 5 between pipe
First 1 one end can be connected to the inner space of interior knife pipe 3, and then meet the sucking of tissue by circulation airflow, and tissue
The demand of collection.
In one of embodiment, Fig. 4 and Fig. 5 are please referred to, the cutting edge structure 33 includes cricoid cutting edge interconnecting piece
331 with blade tip portion 332, the blade tip portion 332 be set to the cutting edge interconnecting piece 331 close to the puncturing head 1 one end, it is described
One end far from the puncturing head 1 of cutting edge interconnecting piece 331 connects the one of the close puncturing head 1 of first pipeline section 31
End.In turn, blade tip portion 332 can have outer inclined-plane 334, outer inclined-plane 335, and outer inclined-plane 334 can connect to form point of a knife with outer inclined-plane 335
The end 333 in portion 332.
Wherein, the outer diameter of the cutting edge interconnecting piece 331 can be greater than the outer diameter of first pipeline section 31, be less than the outer knife pipe
The diameter of 2 internal diameter, the end 333 close to the puncturing head 1 in the blade tip portion 332 can be greater than the interior of the outer knife pipe 2
Diameter.In specific implementation process, the internal diameter of cutting edge interconnecting piece 331 is also greater than the internal diameter of the first pipeline section 31.
In one of embodiment, referring to FIG. 4, the louver 34 includes the axial direction setting along the interior knife pipe 3
Main seam portion 341, and be respectively arranged on the rounded ends 342 at main 341 both ends of seam portion, in turn, a rounded ends 342 can
Set on cutting edge interconnecting piece 331, another rounded ends 342 can be set to the first pipeline section 31.It can guarantee no matter interior knife rotation is taken office
Meaning angle can allow atmosphere to be flowed into the inner space of cutting edge structure 33 from rounded ends 342.
Wherein, the diameter of rounded ends 342 is greater than the width in main seam portion 341.
Fig. 9 is the distribution schematic diagram of louver in an embodiment of the present invention.
In one of embodiment, referring to FIG. 9, the quantity of the louver 34 can be multiple, multiple louvers
34 axial directions for surrounding the interior knife pipe 3 are uniformly distributed.Further, the spacing of two neighboring louver 34 circumferentially is less than cutter groove
21 size circumferentially.As shown in figure 9, such as 6 louvers 34 can be set into and be uniformly distributed along the circumference, knife Guan Xuan in guarantee no matter
It goes to any angle Shi Junyou louver 34 to be in the cutter groove 21 of outer knife pipe 2, in turn, generated air-flow can flow through cutter groove 21
Near.
In one of embodiment, the dynamic seal structure 4 includes sealed base 44 and seal sleeve 45, described close
Back cover seat 44 is fixedly connected on outside the outer knife pipe 2, can be directly connected to, can also be indirectly connected with；The seal sleeve 45 and institute
It states sealed base 44 to be fixedly connected, axial direction of the seal sleeve 45 with the sealed base 44 along the interior knife pipe 3 has peace
Gap is filled, the sealing ring 43 is installed on the installation gap, and the seal sleeve 45 is located at 3 outside of interior knife pipe, described
First cavity 41 is located in the sealed base 44, and second cavity 42 is located in the seal sleeve 45.
Wherein, sealed base 44 can be fixedly connected with dial structure 7, such as: the head end of sealed base 44 can be with
It connects and is fully sealed between the inner face of driver plate pedestal 72 in dial structure 7, connection type is not limited to glue stickup, Laser Welding
It connects.There is between 71 inner face of driver plate ontology certain gap in 44 head end of sealed base and dial structure 7, guarantee to dial
Disk ontology 71 can be rotated around outer 2 axis of knife pipe.
In further optional embodiment or other optional embodiments, the outer surface of outer knife pipe 2 can also be with sealing bottom
44 inner surfaces of seat are fixedly connected, and fixed form is not limited to glue stickup, laser welding etc..
In specific implementation process, Fig. 6 and Fig. 8 are please referred to, the seal sleeve 45 includes that sleeve body 452 is connect with cylinder
Portion 451, the sleeve connection portion 451 are set to the side close to the puncturing head 1 of the sleeve body 452, and the sleeve connects
The inside of socket part 451 is fixedly connected with the outside of the sealed base 44, and the sleeve body 452 is with the sealed base 44 along institute
The axially spaced-apart setting of interior knife pipe 3 is stated, to form the installation gap.The size in the installation gap can be with the ruler of sealing ring 43
It is very little to match, and then may be adapted to the installation for realizing sealing ring 43.
It is connected and fixed mode between 45 inner surface of 44 outer surface of sealed base and seal sleeve, can be multiplicity, it is unlimited
It pastes, be threadedly engaged in glue.
In other optional embodiments, seal sleeve 45 be also possible to sealed base 44 it is integrally formed, in turn, arbitrarily
Installation gap can be formed, and can be with the integral type or fabricated dynamic seal structure 4 of outer 2 direct or indirect connection of knife pipe
All without departing from the description range of the present embodiment.
In addition, the side of the separate puncturing head 1 of dial structure 7 is connected with an after sleeve 8, after rear end spaces 6 can be located at seat
In sleeve 8, seal sleeve 45 may be alternatively located at 8 inside of an after sleeve, and sealed base 44 can be located at the driver plate pedestal 72 of dial structure 7
Inside.
In conclusion biopsy rotary cutting apparatus provided in this embodiment, it is directed to out the ineffective situation discovery of sample, it can be with
Break isopiestic state and introducing atmosphere from the external world, so that tissue can be efficiently sucked out, wherein this is practical new
For type by dynamic seal structure and sealing ring therein, providing one being capable of gap is connected between pipe between inner and outer pipes the first chamber
Body, and the second cavity that can be connected to ambient atmosphere；In rotary-cut, when interior knife pipe is moved to the second position, the first cavity
Closed, can draw tissue into cutter groove under encapsulation situations by sealing ring with the second cavity, after rotary-cut, around cutter groove with interior knife pipe
The pressure of interior generation is suitable, and when interior knife pipe is moved to first position, the first cavity and the second cavity pass through outside the second pipeline section
Gap is connected between chamber, can introduce atmosphere, is formed suction intensity more preferably circulation airflow, circulation airflow and is successively passed through the second chamber
Gap between gap, the first cavity, pipe between body, chamber, and enter in interior knife pipe through one end of the close puncturing head in gap between pipe, the stream
Vent flow can more efficiently send the tissue under rotary-cut to the sample collecting device of rear end, effectively increase out sample rate.
Meanwhile the present embodiment the first cavity and the second cavity be being axially distributed along interior knife pipe,
Gap is also being axially set between the first cavity and the second cavity along interior knife pipe between chamber, so, it is produced
The whole flow direction of anger stream is also situations such as larger bending will not occur along axial, had both maintained and has flowed to higher one
Cause property also avoids the increase of gas flowing stroke, can further improve the efficiency of tissue conveying, be conducive to improve out sample rate.
The connection and partition of first cavity and the second cavity in the present embodiment are brought by the movement of interior knife pipe itself
, during which without separately introducing other based on artificial or mechanical manipulation, it on the one hand can ensure the timeliness of connection and partition, separately
On the one hand, it can also reduce connection and the movement of the internal knife pipe of partition itself causes the adverse effect of such as resistance.
Further, since the present embodiment is without introducing other based on artificial or mechanical manipulation, the present embodiment also can avoid it
He manipulates the degree of wear for increasing structure, i.e. the present embodiment can be beneficial to reduce abrasion, slow down aging speed, improves and uses the longevity
Life, to advantageously reduce maintenance cost.
Simultaneously as the present embodiment is not necessarily to introduce other such as reset components, driving part for the mechanical knot of manipulation
Structure, also can tightness between effective guarantee dynamic seal structure, knife pipe etc., to meet the need of rotary-cut process medium-high speed sports
Ask (because peeling knife rotation speed quickly, can achieve such as r=300rpm each second).
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of biopsy rotary cutting apparatus, interior knife pipe and outer knife pipe including coaxial arrangement, the interior knife pipe are located at the outer knife pipe
Inside, the head end of the outer knife pipe are equipped with puncturing head, and one end far from the puncturing head of the interior knife pipe directly or indirectly connects
Connect sample collecting device；It is characterized in that, further including the dynamic seal structure on the outside of the interior knife pipe；
The dynamic seal structure is formed outside the interior knife pipe free chamber, and the interior knife pipe includes the first pipeline section and the second pipe
One end close to the puncturing head of section, second pipeline section is set to one end far from the puncturing head of first pipeline section,
The outer diameter of second pipeline section is less than the outer diameter of first pipeline section, is equipped with sealing ring, the sky in the dynamic seal structure
Chamber includes positioned at the first cavity of the side close to the puncturing head of the sealing ring and positioned at the separate institute of the sealing ring
The second cavity of the side of puncturing head is stated, first cavity is connected between the first pipeline section outer wall and the outer knife inside pipe wall
Pipe between gap；The one end close to the puncturing head in gap is connected to the inner space of the interior knife pipe between the pipe；
When the interior knife pipe is moved along its axis to first position, the sealing ring is in the outside of second pipeline section, and institute
Gap between there is chamber is stated between sealing ring and second pipeline section, to be connected to first cavity and second cavity；
When the interior knife pipe is moved along its axis to the second position, the sealing ring is in the outside of first pipeline section, and institute
State it is in sealing contact between sealing ring and first pipeline section, to separate first cavity and second cavity.
2. the apparatus according to claim 1, which is characterized in that one end close to the puncturing head of first pipeline section is set
There is cutting edge structure, the wall portion close to the puncturing head of the outer knife pipe is arranged with cutter groove；
When the interior knife pipe is moved along its axis to the first position, the cutting edge structure is in the cutter groove；In described
When knife pipe is moved along its axis to the second position, the cutting edge structure is not on the inside of the cutter groove.
3. the apparatus of claim 2, which is characterized in that further include the ventilation being axially arranged along the interior knife pipe
Seam, the louver is set to the cutting edge structure, or is set to the cutting edge structure and first pipeline section, and the louver connects
Lead to gap between the inner space of the cutting edge structure and the pipe, the inner space of the cutting edge structure is connected to first pipeline section
Inner space.
4. device according to claim 3, which is characterized in that the quantity of the louver is multiple, multiple louver rings
Axial direction around the interior knife pipe is uniformly distributed.
5. device according to claim 3, which is characterized in that the louver includes the axial direction setting along the interior knife pipe
Main seam portion, and be respectively arranged on the rounded ends at the main seam portion both ends.
6. according to the described in any item devices of claim 3 to 5, which is characterized in that the cutting edge structure includes cricoid cutting edge
Interconnecting piece and blade tip portion, the blade tip portion are set to one end close to the puncturing head of the cutting edge interconnecting piece, and the cutting edge connects
One end far from the puncturing head of socket part connects one end close to the puncturing head of first pipeline section.
7. device according to claim 6, which is characterized in that the outer diameter of the cutting edge interconnecting piece is greater than first pipeline section
Outer diameter, less than the internal diameter of the outer knife pipe.
8. device according to claim 7, which is characterized in that the blade tip portion close to the puncturing head end it is straight
Diameter is greater than the internal diameter of the outer knife pipe.
9. device according to any one of claims 1 to 5, which is characterized in that the dynamic seal structure includes sealing bottom
Seat and seal sleeve, the sealed base are fixedly connected on outside the outer knife pipe, and the seal sleeve and the sealed base are solid
Fixed connection, the seal sleeve and the sealed base have installation gap, the sealing ring peace along the axial direction of the interior knife pipe
Loaded on the installation gap, the seal sleeve is located on the outside of the interior knife pipe, and first cavity is located at the sealed base
Interior, second cavity is located in the seal sleeve.
10. device according to claim 9, which is characterized in that the seal sleeve includes that sleeve body is connect with cylinder
Portion, the sleeve connection portion are set to the side close to the puncturing head of the sleeve body, the inside in the sleeve connection portion
It is fixedly connected with the outside of the sealed base, axially spaced-apart of the sleeve body with the sealed base along the interior knife pipe is set
It sets, to form the installation gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821850533.9U CN209377629U (en) | 2018-11-09 | 2018-11-09 | Biopsy rotary cutting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821850533.9U CN209377629U (en) | 2018-11-09 | 2018-11-09 | Biopsy rotary cutting apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN209377629U true CN209377629U (en) | 2019-09-13 |
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ID=67864323
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821850533.9U Active CN209377629U (en) | 2018-11-09 | 2018-11-09 | Biopsy rotary cutting apparatus |
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| CN (1) | CN209377629U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109330632A (en) * | 2018-11-09 | 2019-02-15 | 上海导向医疗系统有限公司 | Biopsy rotary cutting apparatus |
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2018
- 2018-11-09 CN CN201821850533.9U patent/CN209377629U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109330632A (en) * | 2018-11-09 | 2019-02-15 | 上海导向医疗系统有限公司 | Biopsy 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 |
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