CN109730763A - Split flexible cryoablation needle device - Google Patents
Split flexible cryoablation needle device Download PDFInfo
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- CN109730763A CN109730763A CN201910153683.7A CN201910153683A CN109730763A CN 109730763 A CN109730763 A CN 109730763A CN 201910153683 A CN201910153683 A CN 201910153683A CN 109730763 A CN109730763 A CN 109730763A
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Abstract
The present invention provides a kind of Split flexible cryoablation needle devices, comprising: head conduit structure and socket structure；The head conduit structure includes outer tube assembly, inner tube assembly and grafting ontology, is equipped with the cavity for penetrating through its both ends in the grafting ontology；Vacuum passage is equipped in the socket structure；The rear end of the outer tube assembly connects the front end of the grafting ontology, said inner tube component sequentially passes through the outer tube assembly and the cavity, there is the first vacuum gap, the inner wall and said inner tube component of the cavity have the second vacuum gap between said inner tube component and the outer tube assembly；First vacuum gap is connected to second vacuum gap；The grafting ontology is plugged in the socket structure, and second vacuum gap is connected to the vacuum passage, and the rear end of the vacuum passage connects vacuum hose.The present invention realizes the separation and connection of vacuum passage in Split flexible cryoablation needle.
Description
Technical field
The present invention relates to medical field more particularly to Split flexible cryoablation needle devices.
Background technique
Under the part scene of cold therapy, it is desirable that the cryoprobe probe being inserted into should have flexibility, to subtract as small as possible
Few cryoprobe probe wound caused by tissue during entering the natural slide-in of cavity (such as respiratory tract, alveolar, esophagus etc.).It passes
Cryoprobe unite since knife handle is to be made of metal, is difficult to realize above-mentioned target, generally can only to the destructive puncture of harvesting of tissue, and
After the tube wall break-through of above-mentioned cavity, caused result is often fatal.So flexible freezing ablation needle is swollen in cavity
It is of great significance in terms of the treatment of tumor.
Existing flexibility freezes ablation needle other than air inlet and outlet in the related technology, can also be equipped with for keeping the temperature for example
The vacuum passage of vacuum interlayer, and thermocouple wire for measuring tool temperature, for electricity such as the electric heating wires of cutter head rewarming
Line.However, flexible freezing ablation needle only has the tumour or normal tissue contact of cutter head and flexible conduit Duan Huiyu human body, therefore,
Cutter head and flexible conduit section as disposable sterilized consumptive material, remaining handle and are only extended into pipeline section as reuse instrument,
It will be greatly reduced the cost at consumptive material end, reduce waste.So needing to realize the separation and connection of flexible freezing ablation needle.
However, point of vacuum passage and electrical wiring can not be realized in Split flexible cryoablation needle in the prior art
From with connection.It is even more impossible to operate by once plug, while realizing vacuum passage, intake channel, return air path and electric wire wire
The separation and connection on road.
Summary of the invention
The present invention provides a kind of Split flexible cryoablation needle device, with solve cannot achieve the separation of vacuum passage with
The problem of connection, and solve the problems, such as the separation and connection that cannot achieve electric wire in its optinal plan, also further
It is solved in optinal plan how by once plug operation, while realizing vacuum interlayer access, intake channel, return air path, with
And electrical wiring separation and connection the technical issues of.
According to the first aspect of the invention, a kind of Split flexible cryoablation needle device is provided, comprising: head conduit
Structure and socket structure；The head conduit structure includes outer tube assembly, inner tube assembly and grafting ontology, in the grafting ontology
Equipped with the cavity for penetrating through its both ends；Vacuum passage is equipped in the socket structure；
The rear end of the outer tube assembly connects the front end of the grafting ontology, and said inner tube component sequentially passes through the outer tube
Component and the cavity have the first vacuum gap, the inner wall of the cavity between said inner tube component and the outer tube assembly
There is the second vacuum gap with said inner tube component；First vacuum gap is connected to second vacuum gap；
The grafting ontology is plugged in the socket structure, and second vacuum gap is connected to the vacuum passage,
The rear end of the vacuum passage connects vacuum hose.
Optionally, the outer tube assembly includes outer catheter and outer tube fixation member, the outer catheter include outer tube body with
Connecting section set on the outer tube body rear end；The connecting section be sheathed on the grafting ontology by the outer of front end
Wall, the outer tube fixation member are assemblied in the grafting outer body, and the connecting section portion is held on the outer pipe fixed part
Between part and the grafting ontology.
Optionally, the outer wall by front end of the grafting ontology is conical outer wall, and outside the front end of the conical outer wall
Diameter is less than the outer diameter of the conical outer wall rear end；The outer tube fixation member includes that inner wall shape matches with the conical outer wall
Clamping part, the outside of the and first connecting portion set on the clamping part rear end, the grafting ontology is equipped with second connecting portion,
The first connecting portion and second connecting portion assembly are fixed.
Optionally, the side wall of the close rear end of the grafting ontology is equipped with venthole, and the inside of the venthole is connected to institute
State the second vacuum gap；When the grafting ontology is plugged in the socket structure, the outside of the venthole is connected to the vacuum
Channel.
Optionally, the vacuum passage connects the vacuum hose by vacuum pagoda connector.
Optionally, said inner tube component includes inner catheter, extruded tube and return-air connecting tube；The extruded tube before it
The part at end is extruded segment；
The return-air connecting tube includes the first pipeline section and the second pipeline section for being set to first pipeline section rear end, and is set to institute
State the third pipeline section of the second pipeline section rear end；The internal diameter of first pipeline section and outer diameter are respectively less than second pipeline section, and described second
The internal diameter and outer diameter of pipeline section are respectively less than the third pipeline section；The part of close its rear end of the inner catheter is along the inner catheter
For radial compression between the extruded segment and first pipeline section, the outer wall and the extruded tube of the third pipeline section also pass through weldering
Spot welding, second pipeline section are located at the inside of the extruded tube, and the inner wall sleeve of close its rear end of the extruded tube is set to institute
State the outer wall of third pipeline section.
Optionally, it is additionally provided with return gas channel and inlet channel in the socket structure, is equipped with J-T in said inner tube component
Slot structure, the return gas channel are connected to the return-air gap between said inner tube component and the J-T slot structure, the J-T slot
The front end of structure connects the cutter head structure, and the rear end of the J-T slot structure connects the inlet channel.
Optionally, the vacuum passage and the return gas channel are located at the two sides of the inlet channel, institute along reference direction
State the rectilinear direction for passing through its axle center in the cross section that reference direction is the socket structure.
Optionally, the socket structure includes socket main body, joint structure and locking assembly；The joint structure is connected to
The rear end of the grafting ontology, the grafting ontology and the joint structure are inserted into the socket main body, and the locking assembly is used
In the locking socket main body and the grafting ontology；The vacuum passage, the inlet channel and the return gas channel are all provided with
In the socket main body；
The J-T slot structure sequentially passes through said inner tube component and is connect after the joint structure with the joint structure
Hold the inlet channel of side；
Return-air chamber is equipped in the joint structure, the return gas channel is located at the outside of the joint structure, the connector
The side wall of structure is equipped with return-air hole, and the return-air gap, the return-air chamber, the return-air hole successively connect with the return gas channel
It is logical.
Optionally, the device further includes the electric wire that one end is connected to cutter head, is additionally provided in the socket main body for prolonging
The cable channel that long line passes through, the side wall of the joint structure are equipped with the first feed-through assembly, first feed-through assembly with it is described
Connection is connected in the other end of electric wire, and connection, first feed-through assembly are connected with the second feed-through assembly for one end of the extended line
Conducting can be contacted with second feed-through assembly.
Optionally, first feed-through assembly includes the pin holes set on the joint structure side wall, and is set to described
The contact pin of pin holes, the contact pin can contact conducting with second feed-through assembly, and the contact pin is another with the electric wire
End conducting connection.
Optionally, second feed-through assembly includes the electroconductive elastic sheet for being fixed at the socket main body, the conduction bullet
Piece can contact conducting with first feed-through assembly, and connection is connected with one end of the extended line in the electroconductive elastic sheet.
Optionally, second feed-through assembly includes conducting ring；The conducting ring is located on the outside of the joint structure,
The conducting ring can contact conducting with first feed-through assembly, and company is connected with one end of the extended line in the conducting ring
It connects.
The present invention provides a kind of Split flexible cryoablation needle devices, pass through said inner tube component and the outer tube group
The second vacuum gap, vacuum passage between the inner wall and said inner tube component of the first vacuum gap, the cavity between part,
And vacuum hose, can separate with connect after, realization head conduit structure and socket structure between vacuum interlayer access matching
It connects, i.e., the separation and connection of the invention that vacuum passage is realized in Split flexible cryoablation needle.
In the further optinal plan of the present invention, due to return gas channel, inlet channel, grafting ontology, socket main body, connector knot
The setting of structure etc., can be by once plugging, while realizing the separation and connection of vacuum interlayer, intake channel and return air path.
In the further optinal plan of the present invention, due to electric wire, extended line, cable channel, the first feed-through assembly, the second conducting
The setting of component is connected using the contact with the second feed-through assembly of the first feed-through assembly, realizes between electric wire and extended line
Separation and connection.Wherein, can also be by once plugging, while realizing vacuum passage, intake channel, return air path, Yi Ji electricity
The separation and connection of line route.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of Split flexible cryoablation needle device in one embodiment of the invention；
Fig. 2 is the structural schematic diagram of Split flexible cryoablation needle device in another embodiment of the present invention；
Fig. 3 is the structural schematic diagram of head conduit structure and joint structure in one embodiment of the invention；
Fig. 4 is the structural schematic diagram of one embodiment of the invention China and foreign countries tube assembly Yu grafting ontology；
Fig. 5 is the partial enlargement diagram of part A in Fig. 4；
Fig. 6 is the structural schematic diagram of inner tube assembly in one embodiment of the invention；
Fig. 7 is the end structure illustration one of socket structure in one embodiment of the invention；
Fig. 8 is the schematic cross-section of B-B in Fig. 7；
Fig. 9 is the end structure illustration of one embodiment of the invention center tap structure；
Figure 10 is the structural schematic diagram in the section C-C in Fig. 9；
Figure 11 is the end structure illustration two of socket structure in one embodiment of the invention；
Figure 12 is the structural schematic diagram in the section D-D in Figure 11；
Figure 13 is the structural schematic diagram in the section E-E in Figure 12；
Figure 14 is the partial enlargement diagram in the region F in Figure 12；
Figure 15 is the structural schematic diagram of electroconductive elastic sheet in one embodiment of the invention；
Figure 16 is the end structure illustration of socket structure in another embodiment of the present invention；
Figure 17 is the structural schematic diagram in the section G-G in Figure 16；
Description of symbols:
1- head conduit structure；The outer tube assembly of 11-；The outer tube body of 111-；112- connecting section；The outer pipe fixed part of 113-
Part；1131- clamping part；1132- first connecting portion；12- inner tube assembly；121- inner catheter；122- extruded tube；The connection of 123- return-air
Pipe；The first pipeline section of 1231-；The second pipeline section of 1232-；1233- third pipeline section；13- grafting ontology；131- cavity；132- venthole；
The positioning region 133-；134,135- sealing ring；136- bulge loop；The first vacuum gap of 14-；The second vacuum gap of 15-；16-J-T slot knot
Structure；17- return-air gap；
2- socket structure；21- vacuum passage；211- vacuum pagoda connector；22- inlet channel；23- return gas channel；24- connects
Header structure；241- return-air hole；242- sealing ring；243- contact pin；244- insulating coating；
245- pin holes；246- insulating sleeve；247- return-air chamber；25- cable channel；26- socket main body；27- locking group
Part；28- electroconductive elastic sheet；281- shrapnel part；The plug division 282-；29- conducting ring；
3- cutter head structure；
4- vacuum hose；
5- air inlet pipe；
6- muffler；
7- electric wire；71- thermocouple wire；72- rewarming heater wire；
8- extended line；81- thermocouple extension line；82- rewarming heats extended line.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Description and claims of this specification and term " first ", " second ", " third " " in above-mentioned attached drawing
The (if present)s such as four " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should manage
The data that solution uses in this way are interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to
Here the sequence other than those of diagram or description is implemented.In addition, term " includes " and " having " and their any deformation,
Be intended to cover it is non-exclusive include, for example, containing the process, method of a series of steps or units, system, product or setting
It is standby those of to be not necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for these mistakes
The intrinsic other step or units of journey, method, product or equipment.
Technical solution of the present invention is described in detail with specifically embodiment below.These specific implementations below
Example 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 structural schematic diagram of Split flexible cryoablation needle device in one embodiment of the invention.
Referring to FIG. 1, Split flexible cryoablation needle device, comprising: head conduit structure 1 and socket structure 2；It is described
Head conduit structure 1 includes outer tube assembly 11, inner tube assembly 12 and grafting ontology 13, is equipped in the grafting ontology 13 and penetrates through it
The cavity at both ends；Vacuum passage 21 is equipped in the socket structure 2.
The rear end of the outer tube assembly 11 connects the front end of the grafting ontology 13, and said inner tube component 12 sequentially passes through institute
Outer tube assembly 11 and the cavity are stated, there is the first vacuum gap 14 between said inner tube component 12 and the outer tube assembly 11,
The inner wall and said inner tube component 12 of the cavity have the second vacuum gap 15；First vacuum gap 14 is connected to described
Two vacuum gaps 15.
So can be formed in head conduit structure 1 by the connection of the first vacuum gap 14 and the second vacuum gap 15
Vacuum passage part.
First vacuum gap 14 can be used for the vacuum heat-preserving of flexible conduit section, also the cooling capacity of return-air can be prevented to be discharged into outer tube
Frostbite is caused to human normal cavity other than component 1.The air extracted out from gap is finally discharged.
The grafting ontology 13 is plugged in the socket structure 2, second vacuum gap 15 and the vacuum passage
The rear end of 21 connections, the vacuum passage 21 connects vacuum hose 4.
The vacuum hose 4 can connect vacuumizing assembly, and then, it can be achieved that vacuum gap and socket in head conduit structure 1
Vacuum passage once vacuumizes in structure 2.Compared to the mode vacuumized respectively, the complicated journey of structure can also be further decreased
It spends, reduce cost, can also be convenient for being connected to the operation of separation.
Vacuum passage 21 therein can form the vacuum passage part in socket structure 2, pass through vacuum passage 21 and second
It is connected to the connection, it can be achieved that two vacuum passage parts between vacuum gap 15, forms whole vacuum passage, in turn, is led to
Grafting operation is crossed, the connection of two vacuum passage parts can be realized, form complete vacuum passage, it may be assumed that the present embodiment
The separation and connection of vacuum passage can be realized by once plugging in Split flexible cryoablation needle.
The wherein connection of vacuum passage 21 and the second vacuum gap 15, can be radial connection, be also possible to axial
Connection.Likewise, the connection of the first vacuum gap 14 and the second vacuum gap 15, can be radial connection, is also possible to axis
To connection.
Referring to FIG. 1, the radial communication in order to realize the second vacuum gap 15 and vacuum passage 21, one of embodiment party
In formula, the side wall of the close rear end of the grafting ontology 13 is equipped with venthole 132, described in the inside connection of the venthole 132
Second vacuum gap 15；When the grafting ontology 13 is plugged in the socket structure 2, the outside of the venthole 132 is connected to institute
State vacuum passage 21.The quantity of the venthole 132 can be one, or it is two or more, it, can be along diameter if two
To symmetrical.
Fig. 2 is the structural schematic diagram of Split flexible cryoablation needle device in another embodiment of the present invention.
Referring to FIG. 2, return gas channel 23 and inlet channel 22 are additionally provided in the socket structure, in said inner tube component 12
It is equipped with J-T slot structure 16, the return gas channel 23 is connected to returning between said inner tube component 12 and the J-T slot structure 16
Gas gap 17 specifically can be regarded as the return-air gap 17 between 16 inner wall of 12 outer wall of inner tube assembly and J-T slot structure, the J-T
The front end of slot structure 16 connects the cutter head structure 3, and the rear end of the J-T slot structure 16 connects the inlet channel 22.
Cutter head structure 3 can be used for being inserted into tumour and carry out cold therapy.J-T slot structure 16 can be used for for coolant media being delivered to
Then coolant media is returned by return-air gap 17, is finally discharged by cutter head structure 3.
J-T in J-T slot structure 16 specifically can be regarded as Joule-Thomson, such as the hair that can be formed for stainless steel
Tubule.
Referring to FIG. 2, the vacuum passage 21 is located at the inlet channel 22 along reference direction with the return gas channel 23
Two sides, the reference direction be the socket structure 2 cross section in pass through its axle center rectilinear direction, can be regarded as figure
Up and down direction shown in 2, reference direction can also be specially to pass through its axle center in socket structure 2 in the cross section of socket main body 26
Rectilinear direction.
It is distributed, can be conducive to by the differentiation along cross-wise direction of vacuum passage 21, inlet channel 22 and return gas channel 23
Reasonable layout space, avoids interchannel from interacting.
Fig. 3 is the structural schematic diagram of head conduit structure and joint structure in one embodiment of the invention；Fig. 4 is the present invention one
The structural schematic diagram of embodiment China and foreign countries tube assembly and grafting ontology；Fig. 5 is the partial enlargement diagram of part A in Fig. 4.
Fig. 3 to Fig. 5 is please referred to, the outer tube assembly 11 includes outer catheter and outer tube fixation member 113, the outer catheter packet
The connecting section 112 for including outer tube body 111 and being set to outer 111 rear end of tube body, the outer tube body 111 and connecting section
112 can be integrally formed, can be directly connected to, can also be connected by transition pipe portion between the two；112 sets of the connecting section
Set on the outer wall by front end of the grafting ontology 13, the outer tube fixation member 113 is assemblied in outside the grafting ontology 13
Side, the connecting section 112 are held between the outer tube fixation member 113 and the grafting ontology 13.
By the clamping between outer tube fixation member 113 and grafting ontology 13, outer catheter can be effectively fixed, ensures structure
Stablize, meanwhile, under clamping, the inner space of outer catheter can be connected to the cavity 131 in grafting ontology 13, and keep preferable
Leakproofness.
So outer tube fixation member 113 can be can arbitrarily to clamp connecting section 112, and can be with grafting
The set of any component or component that ontology 13 is fixedly connected.
In one of embodiment, the outer wall by front end of the grafting ontology 13 is conical outer wall, and the cone
The front end external diameter of shape outer wall is less than the outer diameter of the conical outer wall rear end, which may be adapted to realize and outer tube fixation member
113 assembly and clamping.In specific implementation process, since the outer diameter of the outer wall of inner tube assembly 12 is to maintain constant, grafting sheet
The internal diameter in the space in conical outer wall in the cavity 131 of body 13 can be more than or equal to the internal diameter of outer tube body 111, as a result, could
Guarantee the unobstructed of vacuum interlayer.Meanwhile the internal diameter in other spaces in the cavity 131 of grafting ontology 13 can further expansion, i.e.,
Internal diameter can change.
Corresponding, the outer tube fixation member 113 includes inner wall shape and the clamping part that the conical outer wall matches
1131, and the first connecting portion 1132 set on 1131 rear end of clamping part, the outside of the grafting ontology 13 is equipped with second
Interconnecting piece, the first connecting portion and second connecting portion assembly are fixed.In specific implementation process, first connecting portion 1132
Inner wall be in helicitic texture, second connecting portion may be match with the helicitic texture of 1132 inner wall of first connecting portion engage it is another
One helicitic texture, so, first connecting portion 1132 and second connecting portion can be threaded connection.
In turn, outer tube fixation member 113 referred to above also may be regarded as a stubborn nut fastly, connecting section 112, or
The combination of connecting section 112 and transition pipe portion may be regarded as bell shape, in turn, in specific implementation process, the rear end of outer catheter
It can be made bell shape by heat treatment, by the loudspeaker muzzle on conical outer wall, be then inserted in stubborn nut fastly, pass through spiral shell
Line is tightened, and outer tube assembly 11 can be clamped tightly at this and twist between nut and conical outer wall fastly as a result, and it is strong to reach preferably connection
Degree and sealing performance.
The inner wall shape of clamping part 1131 referred to above matches with conical outer wall, it will be appreciated that for the angle of chamfer of the two
Degree is identical.
In one of embodiment, referring to FIG. 5, conical outer wall can be equipped with bulge loop 136.The bulge loop 136 can avoid gas
The further outflow of body can also provide resistance to the opposite sliding between grafting ontology 13 and outer tube fixation member 113, so,
The bulge loop can further function as the effect for improving bonding strength and air-tightness.
In one of embodiment, positioning region 133 can be also equipped with outside grafting ontology 13, for realizing grafting ontology 13 with
Positioning between socket structure 2, such as: locating slot can be equipped in socket structure 2, by the way that locating slot is inserted into positioning region 133,
Positioning referred to above can be easy to implement.
Fig. 6 is the structural schematic diagram of inner tube assembly in one embodiment of the invention.
Referring to FIG. 6, and combine Fig. 3, said inner tube component 12 includes inner catheter 121, extruded tube 122 and return-air connecting tube
123；The part close to its front end of the extruded tube 122 is extruded segment, which can be regarded as can be on the inside of it
Knife pipe 121 and return-air connecting tube 123 play the pipeline section of squeezing action.
The return-air connecting tube 123 includes the first pipeline section 1231 and the second pipeline section for being set to 1231 rear end of the first pipeline section
1232, and the third pipeline section 1233 set on 1232 rear end of the second pipeline section；So the first pipeline section 1231, the second pipeline section
1232 with third pipeline section 1233, it will be appreciated that for head and the tail it is sequentially connected, can be integrally formed, meanwhile, may be used also between pipeline section
Equipped with changeover portion.
The internal diameter and outer diameter of first pipeline section 1231 are respectively less than second pipeline section 1232, second pipeline section 1232
Internal diameter and outer diameter are respectively less than the third pipeline section 1233；Wherein, the part of close its rear end of the inner catheter 121 is along described interior
The radial compression of conduit 121 between the extruded segment and first pipeline section 1231, meanwhile, the third pipeline section 1233 it is outer
Wall and the extruded tube 122 are also welded by solder joint, and solder joint specifically can be set to third pipeline section 1233 close to the position of rear end and squeeze
The position of the close rear end of pressure pipe 122；As it can be seen that extruded segment can provide sufficient bonding strength, in addition, extruded segment and pad can
Collective effect, plays the fixation of relative position, and using between extruded tube 122 and inner catheter 121 extruding and inner catheter
121 and the first extruding between pipeline section 1231, the effect of dual-seal is played, has fully ensured that the example for circulating in inner tube assembly 12
The second vacuum gap 14 between inner tube assembly 12 and outer tube assembly 11 will not be leaked to such as the gas of return-air.Wherein, extruded segment
Length, the length of the length of the first pipeline section 1231 and inner catheter 121 part of being inserted into extruded tube 122 can be it is all the same
's.
Second pipeline section 1232 is located at the inside of the extruded tube 122, in turn, the outer wall of the second pipeline section 1232 and extruding
It can produce gap between the inner wall of pipe 122, which can prevent the first more thin pipeline section 1231 too long and increase return-air resistance.
The inner wall sleeve of close its rear end of the extruded tube 122 is set to the outer wall of the third pipeline section 1233.
In one of embodiment, the rear end of inner tube assembly 12 may pass through the grafting ontology 13 and extend to socket structure
In 2, the joint structure 24 in socket structure 2 specifically may extend to.
Fig. 7 is the end structure illustration one of socket structure in one embodiment of the invention；Fig. 8 is that the section of B-B in Fig. 7 shows
It is intended to.
Fig. 7 and Fig. 8 are please referred to, the socket structure 2 includes socket main body 26, joint structure 24 and locking assembly 27；Institute
The rear end that joint structure 24 is connected to the grafting ontology 13 is stated, the grafting ontology 13 is inserted into described with the joint structure 24
Socket main body 26, the locking assembly 27 is for locking the socket main body 26 and the grafting ontology 13.The vacuum passage
21, the inlet channel 22 is set to the socket main body 26 with the return gas channel 23.
Locking assembly 27 therein can be arbitrarily can be in radially and/or axially locking socket main body 26 and grafting ontology
13 component or the set of component.Further, since joint structure 24 is connected to the rear end of grafting ontology 13, joint structure
24 can be positioned by grafting ontology 13 and 26 collective effect of socket main body, it may be assumed that joint structure 24 is installed on the rear end of grafting ontology 13
Between socket main body 26, so, can meet the needs of joint structure 24 installs fixation.
The J-T slot structure 16, which sequentially passes through said inner tube component 12 and connect with the joint structure 24, is located at the connector
The inlet channel 22 of 24 rear end side of structure；It may include following two situation: if the rear end of inner tube assembly 12 does not extend
Grafting ontology 13 out, then the J-T slot structure 16 can further sequentially pass through said inner tube component 12, grafting ontology 13 with it is described
Joint structure 24；If inner tube assembly 12 extends grafting ontology 13, the J-T slot structure 16 is also in turn through being connected directly
Said inner tube component 12 and the joint structure 24.
Referring to FIG. 7, inlet channel 22 can be at the shaft core position of socket main body 26 in one of embodiment, return
Gas channel 23, vacuum passage 21 and each cable channel 25 can be uniformly distributed around the inlet channel 22.
Fig. 9 is the end structure illustration of one embodiment of the invention center tap structure；Figure 10 is the knot in the section C-C in Fig. 9
Structure schematic diagram.
Referring to FIG. 9, the vacuum passage 21 connects institute by vacuum pagoda connector 211 in one of embodiment
Vacuum hose 4 is stated, which can connect vacuum pump.Glue can be passed through between socket main body 26 and vacuum pagoda connector 211
Bonding, vacuum hose 25, which is inserted in vacuum pagoda connector 211, can be advantageously implemented sealing.Air in first vacuum gap is in vacuum
It under the suction of pump, can be discharged through venthole 132, be taken out using vacuum passage 21, vacuum pagoda connector 211 and vacuum hose 4
To outside knife.
Fig. 8, Fig. 9 and Figure 10 are please referred to, and combines Fig. 2, is equipped with return-air chamber 247, the return-air in the joint structure 24
Channel 23 is located at the outside of the joint structure 24, which can be regarded as its radial outside, the side of the joint structure 24
Wall is equipped with return-air hole 241, the return-air gap 17, the return-air chamber 247, the return-air hole 241 and the return gas channel 23 according to
Secondary connection.
The return-air chamber may include the second cavity portion of the first cavity portion and close its rear end close to 24 front end of joint structure, the
The diameter of one cavity portion can be greater than the second cavity portion, and the diameter of the second cavity portion is smaller than the outer diameter of the rear end face of inner tube assembly 12, into
And may be adapted to the insertion for realizing inner tube assembly 12 using the first cavity portion, it specifically may be adapted to realize extruded tube 122 in inner tube assembly 12
Insertion.The return-air hole 241 can be equipped with the side wall of the second cavity portion.
In one of embodiment, sealing ring 134 and sealing ring 135, joint structure can be equipped on the outside of grafting ontology 13
24 outsides can be equipped with sealing ring 242, corresponding, seal groove can be equipped on the outside of grafting ontology 13 and joint structure 24, for pacifying
Fill sealing ring.
Sealing ring 134 along grafting ontology 13 the outer wall for being radially disposed at grafting ontology 13 and socket main body 26 inner wall it
Between, locking assembly 27 also is located at the outside of sealing ring 134, wherein between locking assembly 27, socket main body 26 and grafting ontology 13
Junction be in the front end side of sealing ring 134, vacuum passage 21 and venthole 132 are in the rear end side of sealing ring 134,
In turn, it can guarantee that the gas in air will not enter vacuum passage, play preferable sealing function.
Sealing ring 135 can be between return-air hole 241 and venthole 132 along the axial direction of grafting ontology 13, can be at two
Sealing function is played between hole, ensure that the coolant media of return will not enter vacuum passage 21, sealing ring 135 specifically can be along slotting
The axial direction for connecing ontology 13 is held between grafting ontology 13 and joint structure 24, and the radial direction along grafting ontology 13 is in socket main body
Between 26 and the outer wall of joint structure 24.
Sealing ring 242 can be between return-air hole 241 and inlet channel 22 along the axial direction of joint structure 24, can ensure into
Isolating seal between gas channel 22 and return gas channel 23.Sealing ring 242 can specifically connect along being radially disposed at for joint structure 24
Between 24 outer wall of header structure and the inner wall of socket main body 26.
In addition, the socket main body 26 may be, for example, plastic material.The rear end of inlet channel 22 can connect air inlet pipe 5, insert
It can be connected, can also be connect by screw thread with another sealing ring by way of integrated injection molding between seat main body 26 and the air inlet pipe 5；
23 rear end of return gas channel can connect muffler 6, can be connected by way of integrated injection molding between socket main body 26 and muffler 6,
It can also be connect by screw thread with another sealing ring.
Due to vacuum passage, return gas channel, inlet channel, return-air chamber, grafting ontology, socket main body, joint structure, ventilation
The connection of vacuum passage and the second vacuum gap radially can be achieved by a grafting venthole, lead to for the setting of hole, return-air hole etc.
It crosses the secondary grafting return-air hole radially and the connection of return gas channel and return-air chamber can be achieved, inlet channel can also be achieved by the secondary grafting
With the connection of J-T slot structure.As it can be seen that embodiment of above road can be by once plugging, while realizing vacuum passage, intake channel
With the separation and connection of return air path.Access therein is interpreted as may include related hole, channel etc., such as air inlet above
Access can be regarded as the space segment of all achievable air inlets, logical in J-T slot structure that specifically can be for example referred to above
The entirety of feed channel, inlet channel etc., return air path can be regarded as the space segment of all achievable air inlets, specifically can be such as
The entirety of return-air gap referred to above, return-air hole, return gas channel, return-air chamber etc., vacuum passage can the specific for example above institutes
The entirety of the venthole, the first vacuum gap, the second vacuum gap, the vacuum passage that are related to etc..
In one of embodiment, the device further includes the electric wire 7 that one end is connected to cutter head, which can example
It such as extends in cutter head, the cable channel 25 passed through for extended line, the joint structure 24 is additionally provided in the socket main body 26
Side wall be equipped with the first feed-through assembly, connection, the extended line is connected with the other end of the electric wire 7 in first feed-through assembly
Connection is connected with the second feed-through assembly for 8 one end, and first feed-through assembly can contact conducting with second feed-through assembly.
Due to the first feed-through assembly and the second feed-through assembly be by contacting conducting, so, may be adapted to once plugging
Middle completion is connected and is separated.
In one of embodiment, vacuum passage 21 referred to above, return gas channel 23 and such as four electric wires
Channel 25 can be uniformly distributed around inlet channel 22.
Fig. 9 and Figure 10 are please referred to, first feed-through assembly includes the pin holes set on 24 side wall of joint structure
245, and set on the contact pin 243 of the pin holes 245, the contact pin 243 can contact conducting with second feed-through assembly.
The electric wire 7 can be for example including thermocouple wire 71 and rewarming heater wire 72, which also is understood as
Rewarming heater strip.In specific implementation process, thermocouple wire 71 specifically may include thermocouple constantan line and thermocouple wire-copper.It is corresponding
It can also be configured matched contact pin 243, such as similar material, or the material being adapted to can be used.Meanwhile contact pin 243
Material can not also change with thermocouple wire 71.
In specific implementation process, electric wire 7 may include two rewarming heater wires 72 and two thermocouple wires 71, two thermoelectricity
Amphitene 71 can such as thermocouple constantan line and thermocouple wire-copper.
Such as the electric wire 7 of thermocouple wire 71 and rewarming heater wire 72 can be placed on J-T slot structure 16 and inner tube assembly 12
Between return-air gap in, the front end of the two is gone directly inside cutter head structure 3, and the rear end of thermocouple wire 71 can specifically be separated into two
Root line, i.e., above involved in thermocouple constantan line and thermocouple wire-copper, wherein thermocouple constantan line is inserted into corresponding insert
It in needle and welds, the surface near the pin holes 245 of joint structure 24 can be covered with one layer of insulating coating 244, can in pin holes 245
It has filled in insulating sleeve 246 and has been mutually bonded；Contact pin 243 is filled in pin holes 245 and after being mutually bonded, and can only be exposed on the outside
The collective effect of its round end, insulating coating 244 and insulating sleeve 246 ensures the corresponding contact pin 243 of thermocouple constantan line and connects
It is not turned between 24 other parts of header structure.The connection structure of thermocouple wire-copper and rewarming heater strip is also such as thermocouple above
The description of constantan line understands.
So the first feed-through assembly may also include that the insulating sleeve 246 set on pin holes 245, and be set to pin holes
The insulating coating 244 in 245 outsides, the insulating coating 244 can be set between 24 surface of head and joint structure of contact pin 243,
Insulating sleeve 246 can be set between the insertion section of contact pin 24 and the hole wall of pin holes 245.
Figure 11 is the end structure illustration two of socket structure in one embodiment of the invention；Figure 12 is the section D-D in Figure 11
Structural schematic diagram；Figure 13 is the structural schematic diagram in the section E-E in Figure 12；Figure 14 is the partial enlargement signal in the region F in Figure 12
Figure.
Figure 11 to Figure 14 is please referred to, second feed-through assembly includes the electroconductive elastic sheet for being fixed at the socket main body 26
28, the electroconductive elastic sheet 28 can contact conducting, the electroconductive elastic sheet 28 and the extended line 8 with first feed-through assembly
One end conducting connection.In specific implementation process, the distribution of electroconductive elastic sheet 28 can be as shown in figure 13.
The extended line 8 can heat extended line 82 for example including thermocouple extension line 81 and rewarming, and rewarming heating extends
Line 82 also is understood as rewarming heater strip.In specific implementation process, thermocouple extension line 81 specifically may include that thermocouple constantan prolongs
Long line and thermocouple copper extended line.It is corresponding to have can also be configured matched electroconductive elastic sheet 28, such as similar material can be used, or
The material being adapted to.Meanwhile the material of electroconductive elastic sheet 28 can not also change with thermocouple extension line 81.
In specific implementation process, extended line 8 may include that two rewarmings heat extended lines 82 and two thermocouple extension lines 81,
Two thermocouple extension lines therein can such as thermocouple constantan extended line and thermocouple copper extended line.It is corresponding, it can be along up time
The electroconductive elastic sheet of 3 copper and the electroconductive elastic sheet of a constantan is distributed in needle direction respectively, and the electroconductive elastic sheet of three copper can be used respectively
It is connect in two rewarming heating extended lines 82 with thermocouple copper extended line, the electroconductive elastic sheet of a constantan can be with thermocouple constantan
Extended line connection.Connection referred to above can be, for example, to weld.
Figure 15 is the structural schematic diagram of electroconductive elastic sheet in one embodiment of the invention.
Figure 15 is please referred to, electroconductive elastic sheet 28 is mountable in the shell fragment groove of socket main body 26, specifically, electroconductive elastic sheet
28 may include shrapnel part 281, be used to may also include plug division 282 with 243 conductive contact of contact pin, electroconductive elastic sheet 28, can be used for
It is inserted into shell fragment groove, for fixing the position of electroconductive elastic sheet 28.Extended line 8 can be welded with shrapnel part 281, can also be with plug division
282 welding.
It after cable channel 25 penetrates extended line 8, can be poured into glue, to realize sealing, prevent the refrigerant in return gas channel
Medium leaks to outside knife.
In specific implementation process, after head conduit structure 1 is inserted into socket structure 2 and is locked, inlet channel, return gas channel
Can be switched on simultaneously with vacuum passage, at the same time, the contact pin 243 of the contact pin 243 of 3 copper and a constantan can respectively with 3
The contact of the electroconductive elastic sheet 28 of the electroconductive elastic sheet 28 of copper and a constantan, and since the elasticity of electroconductive elastic sheet guarantees contact securely, by
This, can realize conducting, thermocouple constantan line and thermocouple constantan extended line between rewarming heater wire and rewarming heating extended line
Between conducting and the conducting between thermocouple wire-copper and thermocouple copper extended line.
In addition to realizing the mode being conductively connected above by electroconductive elastic sheet, a kind of benefit is additionally provided in subsequent implementation mode
The mode of contact conducting is realized with conducting ring.
Figure 16 is the end structure illustration of socket structure in another embodiment of the present invention；Figure 17 is the section G-G in Figure 16
Structural schematic diagram.
Figure 16 and Figure 17 are please referred to, second feed-through assembly includes conducting ring 29, and the conducting ring 29 is located on described
The outside of joint structure 24 specifically can be between 26 inside of 24 outside of joint structure and socket main body；29 energy of conducting ring
It is enough to contact conducting with first feed-through assembly, conducting, the conducting ring 29 and the extended line can be specifically contacted with contact pin 243
Connection is connected in 8 one end.
Wherein, conducting ring 29 is mountable to pedestal 291, which can fill with socket main body 26 or joint structure 24
It is integrated with, being also possible to together.The pedestal 291 can be plastic material.
If extended line 8 may include two rewarming heating extended lines 82 and two thermocouple extension lines 81, two heat therein
Galvanic couple extended line can such as thermocouple constantan extended line and thermocouple copper extended line；Then: forgoing is directed to conducting ring can wrap
Include the conducting ring 29 of 3 copper and the conducting ring 29 of a constantan.
In specific implementation process, the thermocouple extension line 81 of copper and two rewarmings heating extended lines 82 respectively with copper
Conducting ring 29 welds, and the thermocouple extension line 81 of constantan can then be welded with the conducting ring 29 of a constantan.Pedestal 291, conducting ring
29, which can be used as an entirety with joint structure 24, fills in socket main body 26, blend compounds hydropexis.Wherein, it is only needed in socket main body 26
Two cable channels 25 are set, such as the cable channel of top can walk two rewarming heating extended lines 82, the electricity of lower section in Figure 17
Line passage 25 can walk thermocouple copper extended line and thermocouple constantan extended line and need to be perfused with glue in cable channel 25 after wiring
Sealing.
Figure 17 is please referred to, can be axially distributed there are four contact pin along joint structure 24, inserting for copper is distributed with respectively from front to back
Needle 243, the contact pin 243 of copper, constantan contact pin 243 and copper contact pin 243, the insulation mode of contact pin can refer to above involved in
Insulating coating 244 is realized with insulating sleeve 246.
2nd contact pin 243 and the 4th contact pin 243 therein can be welded with two rewarming heater wires 82, the 1st respectively
Contact pin 243 and third contact pin 243, can respectively with thermocouple wire-copper and thermocouple constantan wire bonding.Two of same function
Line can be arranged apart, i.e., two axially adjacent contact pins are the contact pin for connecting thermocouple wire 71 and rewarming heater wire 72 respectively,
It can avoid distance and short circuit closely occur very much.
After grafting, 4 contact pins 243 are in contact with corresponding 4 conducting rings 29 respectively, since conducting ring 29 is cyclic annular knot
Structure, therefore, the program are not necessarily to limit the direction of insertion of head conduit structure 1.
In embodiment of above, is connected using the contact with the second feed-through assembly of the first feed-through assembly, realizes electric wire
Separation and connection between extended line.Wherein, can also be by once plugging, while realizing vacuum passage, intake channel, return-air
The separation and connection of access and electrical wiring.
Further, since electric wire extends to cutter head structure, such as the electric wire of thermocouple wire and rewarming heater wire can be acted on directly
It is real to may make that Temperature-control Monitoring and rewarming can come directly against the working region of cutter head in turn to the position close to cutter head structure
It is existing, the hysteresis quality of Temperature-control Monitoring and the uncertainty of the temperature difference range are avoided, the precision of thermocouple detection is effectively increased, and is had
Effect improves rewarming effect.
Simultaneously as thermocouple wire extends to cutter head structure, i.e. thermocouple can be directly arranged near cutter head structure, may be used also
Be conducive to the temperature of targetedly continuous real-time monitoring cutter head position tumor tissues.
In conclusion the present invention provides a kind of Split flexible cryoablation needle device, by said inner tube component with
The second vacuum space between the inner wall and said inner tube component of the first vacuum gap, the cavity between the outer tube assembly
Gap, vacuum passage and vacuum hose, can separate with connect after, realization head conduit structure and socket structure between vacuum clip
The matching of layer access is connected, i.e. the separation and connection of present invention realization vacuum interlayer in Split flexible cryoablation needle.
In the further optinal plan of the present invention, due to return gas channel, inlet channel, grafting ontology, socket main body, connector knot
The setting of structure etc., can be by once plugging, while realizing the separation and connection of vacuum interlayer, intake channel and return air path.
In the further optinal plan of the present invention, due to electric wire, extended line, cable channel, the first feed-through assembly, the second conducting
The setting of component is connected using the contact with the second feed-through assembly of the first feed-through assembly, realizes between electric wire and extended line
Separation and connection.Wherein, can also be by once plugging, while realizing vacuum passage, intake channel, return air path, Yi Ji electricity
The separation and connection of line route.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (13)
1. a kind of Split flexible cryoablation needle device characterized by comprising head conduit structure and socket structure；Institute
Stating head conduit structure includes outer tube assembly, inner tube assembly and grafting ontology, is equipped in the grafting ontology and penetrates through its both ends
Cavity；Vacuum passage is equipped in the socket structure；
The rear end of the outer tube assembly connects the front end of the grafting ontology, and said inner tube component sequentially passes through the outer tube assembly
With the cavity, there is the first vacuum gap, the inner wall of the cavity and institute between said inner tube component and the outer tube assembly
Inner tube assembly is stated with the second vacuum gap；First vacuum gap is connected to second vacuum gap；
The grafting ontology is plugged in the socket structure, and second vacuum gap is connected to the vacuum passage, described
The rear end of vacuum passage connects vacuum hose.
2. the apparatus according to claim 1, which is characterized in that the outer tube assembly includes outer catheter and outer pipe fixed part
Part, the outer catheter include outer tube body and the connecting section for being set to the outer tube body rear end；The connecting section is sheathed on
The outer wall by front end of the grafting ontology, the outer tube fixation member are assemblied in the grafting outer body, the connection
Pipe portion portion is held between the outer tube fixation member and the grafting ontology.
3. the apparatus of claim 2, which is characterized in that the outer wall by front end of the grafting ontology is outside taper
Wall, and the front end external diameter of the conical outer wall is less than the outer diameter of the conical outer wall rear end；The outer tube fixation member includes interior
The clamping part that wall shape and the conical outer wall match, and the first connecting portion set on the clamping part rear end, it is described to insert
The outside for connecing ontology is equipped with second connecting portion, and the first connecting portion and second connecting portion assembly are fixed.
4. the apparatus according to claim 1, which is characterized in that the side wall of the close rear end of the grafting ontology is equipped with ventilation
The inside in hole, the venthole is connected to second vacuum gap；It is described when the grafting ontology is plugged in the socket structure
The outside of venthole is connected to the vacuum passage.
5. the apparatus according to claim 1, which is characterized in that the vacuum passage passes through described in the connection of vacuum pagoda connector
Vacuum hose.
6. device according to any one of claims 1 to 5, which is characterized in that said inner tube component includes inner catheter, squeezes
Pipe and return-air connecting tube；The part close to its front end of the extruded tube is extruded segment；
The return-air connecting tube includes the first pipeline section and be set to the second pipeline section of first pipeline section rear end, and is set to described the
The third pipeline section of two pipeline section rear ends；The internal diameter and outer diameter of first pipeline section are respectively less than second pipeline section, second pipeline section
Internal diameter and outer diameter be respectively less than the third pipeline section；Radial direction of the part of close its rear end of the inner catheter along the inner catheter
It is extruded between the extruded segment and first pipeline section, the outer wall and the extruded tube of the third pipeline section are also welded by solder joint
It connects, second pipeline section is located at the inside of the extruded tube, and the inner wall sleeve of close its rear end of the extruded tube is set to described the
The outer wall of three pipeline sections.
7. device according to any one of claims 1 to 5, which is characterized in that it is logical to be additionally provided with return-air in the socket structure
Road and inlet channel are equipped with J-T slot structure in said inner tube component, and the return gas channel is connected to said inner tube component and institute
The return-air gap between J-T slot structure is stated, the front end of the J-T slot structure connects the cutter head structure, the J-T slot structure
Rear end connects the inlet channel.
8. device according to claim 7, which is characterized in that the vacuum passage and the return gas channel are along reference direction
Positioned at the two sides of the inlet channel, the reference direction is to pass through the straight line side in its axle center in the cross section of the socket structure
To.
9. device according to claim 7, which is characterized in that the socket structure include socket main body, joint structure with
Locking assembly；The joint structure is connected to the rear end of the grafting ontology, and the grafting ontology and the joint structure are inserted into
The socket main body, the locking assembly is for locking the socket main body and the grafting ontology；It is the vacuum passage, described
Inlet channel and the return gas channel are set to the socket main body；
The inlet channel is set in the socket main body, and the J-T slot structure sequentially passes through said inner tube component and connects with described
Header structure connection is located at the inlet channel of joint structure rear end side；
Return-air chamber is equipped in the joint structure, the return gas channel is located at the outside of the joint structure, the joint structure
Side wall be equipped with return-air hole, the return-air gap, the return-air chamber, the return-air hole are sequentially communicated with the return gas channel.
10. device according to claim 9, which is characterized in that further include the electric wire that one end is connected to cutter head, the socket
It is additionally provided with the cable channel passed through for extended line in main body, the side wall of the joint structure is equipped with the first feed-through assembly, and described the
Connection is connected with the other end of the electric wire for one feed-through assembly, and connection is connected with the second feed-through assembly in one end of the extended line,
First feed-through assembly can contact conducting with second feed-through assembly.
11. device according to claim 10, which is characterized in that first feed-through assembly includes being set to the connector knot
The pin holes of structure side wall, and set on the contact pin of the pin holes, the contact pin can be contacted with second feed-through assembly and be led
Logical, connection is connected with the other end of the electric wire in the contact pin.
12. device according to claim 10, which is characterized in that second feed-through assembly includes being fixed at described insert
The electroconductive elastic sheet of seat main body, the electroconductive elastic sheet can contact conducting, the electroconductive elastic sheet and institute with first feed-through assembly
State one end conducting connection of extended line.
13. device according to claim 10, which is characterized in that second feed-through assembly includes conducting ring；It is described to lead
Electric ring is located on the outside of the joint structure, and the conducting ring can contact conducting with first feed-through assembly, described to lead
Connection is connected with one end of the extended line in electric ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910153683.7A CN109730763A (en) | 2019-02-28 | 2019-02-28 | Split flexible cryoablation needle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910153683.7A CN109730763A (en) | 2019-02-28 | 2019-02-28 | Split flexible cryoablation needle device |
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| Publication Number | Publication Date |
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| CN109730763A true CN109730763A (en) | 2019-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910153683.7A Pending CN109730763A (en) | 2019-02-28 | 2019-02-28 | Split flexible cryoablation needle device |
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| CN110327110A (en) * | 2019-08-13 | 2019-10-15 | 上海导向医疗系统有限公司 | The adjustable freeze melting device of handle angle |
| CN110934636A (en) * | 2020-02-24 | 2020-03-31 | 上海导向医疗系统有限公司 | Flow regulating assembly and flow-adjustable flexible cryoprobe |
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