CN208065263U - A kind of minimally invasive vapor probe and therapeutic equipment for oncotherapy - Google Patents

Abstract

The utility model provides a kind of minimally invasive vapor probe and therapeutic equipment for oncotherapy, minimally invasive vapor probe for oncotherapy includes needle tubing, it is set to the needle point of needle tubing one end and is set to the handle of needle tubing opposite side, handle inner has the distributary division close to the needle tubing, there is influent stream connector, the side close to the needle tubing end of the handle backflow fittings are arranged for one end far from the needle tubing of the handle；The arrival end of the backflow fittings is connected with the reflux liquid outlet of the distributary division；Wherein, the tube wall of the needle tubing has the treatment zone close to the needle point and the heat-insulated section far from the needle point, has central tube in the needle tubing, the central tube is through the needle tubing and the handle area, to carry out circulation road as steam.A kind of minimally invasive vapor probe for oncotherapy provided by the utility model, there is only heat exchange, no substances to enter tissue for the course of work, is a kind of green therapeutic modality of pure physics.

Description

A kind of minimally invasive vapor probe and therapeutic equipment for oncotherapy

Technical field

The utility model belongs to the heating ablation equipment technical field for oncotherapy, and in particular to one kind is controlled for tumour The minimally invasive vapor probe and therapeutic equipment treated.

Background technology

For the treatment of malignant tumour, become that domestic and international biomedical engineering circle faced always for a long time great chooses War.People once by operation excision, radiation and chemotherapy as standard the most treatment means.But operation excision damage is big, and makes At mutilation, and radiotherapy can usually bring the serious body and mind pain of patient, all of these factors taken together with side effect caused by chemotherapy Inevitably reduce the survival rate and life quality of patient.Therefore, seek effectively to kill tumour cell and The lower minimally-invasive treatment means of damaging and toxic side effect, just become clinical medicine circle and biomedical engineering circle puts forth effort pursuit High-Interest Object.

Currently, minimally invasive insertion type physiotherapy has become the frontier development of related field, and relevant art also has become developing The commanding elevation of advanced medical device market.In various effort, Microwave is to develop very rapid new physics in recent years Therapy.Microwave is to reach the physical therapy modalities of killing tumour purpose by heating, because having curative for effect, directionality It is strong to wait remarkable advantages, obtain the extensive attention of clinical medicine circle；In particular, hyperthermic techniques are because side effect is far below conventional Radiation and chemotherapy, the reputation of " green remedy " has been won in clinical tumor, also therefore at home and abroad had developed rapidly.

For current Microwave equipment based on radio frequency and microwave, structure is complex, and cost is higher, it is difficult to be widely popularized It is universal.Such as the circuit of the confidential generation complexity of microwave heat therapeutic is exported with generating microwave, since electromagnetic field of its own generation can be right Temperature measurement interferes, so thermometric is more demanding, and must use protective device at probe in order to avoid normal tissue is made At damage；And other heat therapy machines such as radio frequency, ultrasound etc., when no cold water, be easy to cause hot pain.All these heat therapy machine probes Due to using complicated transmitting field-effect, the design of cooling system is relatively difficult, and it is difficult to implement dosage when thermotherapy With determination.

Utility model content

In view of the defects existing in the prior art, the utility model provide a kind of minimally invasive vapor probe for oncotherapy and Therapeutic equipment can effectively solve the above problems.

The technical solution adopted in the utility model is as follows：

The utility model provides a kind of minimally invasive vapor probe for oncotherapy, including needle tubing (43), be set to it is described The needle point (44) of needle tubing (43) one end and the handle (42) for being set to the needle tubing (43) opposite side；The handle (42) There is the distributary division (46) close to the needle tubing (43), one end far from the needle tubing (43) of the handle (42) to have for inside Influent stream connector (41), the side setting backflow fittings (45) close to the needle tubing (43) end of the handle (42)；The reflux The arrival end of connector (45) is connected with the reflux liquid outlet of the distributary division (46)；

Wherein, the tube wall of the needle tubing (43) has close to the treatment zone of the needle point (44) and far from the needle point (44) heat-insulated section, has central tube (431) in the needle tubing (43), and the central tube (431) is through the needle tubing (43) and the handle (42), to carry out circulation road as steam；

The end of the central tube (431) is connected to steam outlet plenum (435), is conveyed by the central tube (431) High-temperature steam is condensed into liquid in the steam outlet plenum (435)；

It is circumferentially with interior wing (434), the interior wing (434) positioned at the internal face of the needle tubing (43) of the treatment zone Have spatial joint clearance using as the first return flow line (436) between the outer wall of the central tube (431) of the treatment zone, it is described The entrance of first return flow line (436) is connected to the steam outlet plenum (435), steam outlet plenum (435) inner condensat liquid Body enters first return flow line (436)；

The stage casing region of the central tube (431) is equipped with the outer tube (437) for being coaxially coated on the central tube (431), The end of the outer tube (437) is set to before the entrance of the backflow fittings (45) using the reflux as the distributary division (46) Inlet；

Spatial joint clearance between the outer tube (437) and the central tube (431) as the second return flow line (432), The outlet end of first return flow line (436) is connected with the arrival end of second return flow line (432), described second time The outlet end of circulation road (432) is connected to the reflux liquid inlet mouth of the distributary division (46)；

It is set between the internal face and the outside wall surface of the outer tube (437) of the needle tubing (43) of the heat-insulated section Set thermal insulation layer (433).

Preferably, the distributary division (46) includes being sheathed on the cyclic annular isocon of the central tube (431) outside, the ring-type The inner wall of isocon has step-like structure, so that the pipe orifice diameter close to the needle point (44) one end is L1, for connecting The end of outer tube (437) is stated, the pipe orifice diameter far from the needle point (44) one end of the ring-type isocon is L2, for connecting Connecting handle side stretches out in the central tube (431) except the end of outer tube (437), L1 > L2, the ring-type isocon it is close Through-hole, the backflow fittings (45) described in the through hole vertical connection are arranged in the side of the backflow fittings (45).

Preferably, the interior filling multilayer heat-insulating material of thermal insulation layer (433), the heat-insulating material includes radiation shield and interval The material of the one or two of object, the radiation shield includes metal foil and/or metal-coated films, and the material of the spacer includes Non-woven fabrics and/or nylon.

Preferably, the outer diameter of the needle tubing (43) is 0.5mm~10mm；

And/or

Length is 1mm~500mm；

And/or

Making material is one or more compounds in stainless steel, titanium, titanium alloy.

Preferably, the shape of the needle point (44) is circular cone, trigone point, tetragonous point or more ribs point；

And/or

Using the one or more of carbon fiber, wire, woven wire, fin, liquid metal inside the needle point (44) Enhancing heat exchange；

And/or

The angle of the needle point (44) is 1 °~180 °.

Preferably, return duct is arranged in the exit of the backflow fittings (45), and the shape of the return duct is straight tube, ripple Pipe or combinations thereof；

And/or

The return duct making material is rubber, plastics, metal or carbon fiber.

The utility model also provides a kind of minimally invasive vapor probe therapeutic equipment for oncotherapy, including therapeutic equipment master Machine and probe (4)；The therapeutic equipment host includes steam generation facility (2), working medium retracting device (5) and control system (1), The probe (4) is a kind of minimally invasive vapor probe for oncotherapy above-mentioned；

The control system (1) is electrically connected with the steam generation facility (2), for controlling the steam generation facility (2) temperature, pressure and the flow of steam are generated；The outlet of the steam generation facility (2) being used for oncotherapy with described one kind The influent stream connector (41) of minimally invasive vapor probe communicate, for a kind of minimally invasive vapor probe conveying for oncotherapy High temperature and high pressure steam；A kind of backflow fittings (45) of minimally invasive vapor probe for oncotherapy are filled with working medium recycling The entrance connection for setting (5), for condensed fluid to be transported to the working medium retracting device (5).

Preferably, the heat source of the steam generation facility (2) is electrical heating heat source, microwave heating heat source, eddy heating for heating heat One kind in source, light heat source, Ultrasonic Heating heat source, chemical reaction heat source or chemical reaction direct steam generation heat source Or it is a variety of.

Preferably, the steam that the steam generation facility (2) generates is vapor, methanol steam, formic acid vapor, ethyl alcohol steaming One or more mixtures in vapour, acetic acid steam, ethyl ester steam, propyl alcohol steam, propionic acid steam, the third fat steam.

Preferably, further include the temperature sensor being set on a kind of minimally invasive vapor probe for oncotherapy； The temperature sensor is connect with the control system (1), and the temperature sensor is platinum resistance or thermocouple.

A kind of minimally invasive vapor probe and therapeutic equipment for oncotherapy provided by the utility model has the following advantages：

A kind of minimally invasive vapor probe for oncotherapy provided by the utility model, there is only heat friendships for the course of work It changes, no substance enters tissue, is a kind of green therapeutic modality of pure physics, nonhazardous, Small side effects；Operating temperature can It adjusts, is suitble to the different size of tumour for the treatment of.Also have the advantages that easy to use and working medium is cheap, is easy to be promoted.

Description of the drawings

Fig. 1 is the positive overall structure of the minimally invasive vapor probe therapeutic equipment provided by the utility model for oncotherapy Schematic diagram；

Fig. 2 is the back side overall structure of the minimally invasive vapor probe therapeutic equipment provided by the utility model for oncotherapy Schematic diagram；

Fig. 3 is the structural schematic diagram of the minimally invasive vapor probe provided by the utility model for oncotherapy；

Fig. 4 is the partial enlarged view of Fig. 3 left parts.

Wherein:

1- control systems；2- steam generation facilities；3- displays；4- probes；5- working medium retracting devices；

4- probes；41- influent stream connectors；42- handles；43- needle tubings；44- needle points；45- backflow fittings；46- distributary divisions；

411- grooves；431- central tubes；The second return flow lines 432-；433- thermal insulation layers；Wing in 434-；435- steam goes out Oral cavity；The first return flow lines 436-；437- outer tubes.

Specific implementation mode

The technical issues of in order to keep the utility model solved, technical solution and advantageous effect are more clearly understood, below In conjunction with accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific implementation described herein Example only to explain the utility model, is not used to limit the utility model.

Referring to figs. 3 to Fig. 4, on the one hand the utility model provides a kind of minimally invasive vapor probe for oncotherapy, including Needle tubing 43, the needle point 44 for being set to 43 one end of needle tubing and the handle 42 for being set to 43 opposite side of needle tubing, inside handle 42 With the distributary division 46 close to needle tubing 43, one end of separate the needle tubing 43 of handle 42 with influent stream connector 41, handle 42 it is close Backflow fittings 45 are arranged in the side at needle tubing end；The arrival end of backflow fittings 45 is connected with the reflux liquid outlet of distributary division 46.

Wherein, the tube wall of needle tubing 43 has the heat-insulated section for the treatment of zone and separate needle point 44 close to needle point 44, needle There is central tube 431, central tube 431 is through 42 region of needle tubing 43 and handle, to carry out circulation road as steam in pipe 43.

The end of central tube 431 is connected to steam outlet plenum 435, and the high-temperature steam conveyed by central tube 431 is in steam Outlet plenum 435 is condensed into liquid.

It is circumferentially with interior wing 434 (inner fin), interior wing 434 and treatment zone positioned at the internal face of the needle tubing 43 for the treatment of zone Central tube outer wall between have spatial joint clearance using as the first return flow line 436.The entrance of first return flow line 436 and steaming Vapor outlet chamber 435 is connected to, and 435 inner condensat liquid body of steam outlet plenum enters the first return flow line 436.

The stage casing region of central tube 431 is equipped with the outer tube 437 for being coaxially coated on central tube 431, the end of outer tube 437 It holds before being set to the entrance of backflow fittings 45 using the reflux liquid inlet mouth as distributary division 46.

Spatial joint clearance between outer tube 437 and central tube 431 is as the second return flow line 432, the first return flow line 436 Outlet end be connected with the arrival end of the second return flow line 432, the outlet end of the second return flow line 432 is returned with distributary division 46 Flow inlet connection.Thermal insulation layer is set between the internal face and the outside wall surface of outer tube 437 of the needle tubing 43 of heat-insulated section 433。

Wherein, influent stream connector 41 and backflow fittings 45 are mounted on handle 42；Wherein, spiral shell may be used in influent stream connector 41 Line, the one or more modes inserted soon in articulation, straight cutting, gas connection realize connection.

Further, distributary division 46 includes the cyclic annular isocon being sheathed on outside central tube 431, the inner wall tool of cyclic annular isocon There is step-like structure, so that the pipe orifice diameter close to 44 one end of needle point is L1, is used for the end of outer sleeve for connecting 437；Ring-type point The pipe orifice diameter of 44 one end of separate needle point of flow tube is L2, is stretched out in except the end of outer tube 437 for connecting handle side Through-hole is arranged in the side of central tube 431, L1 > L2, the close backflow fittings 45 of cyclic annular isocon, is returned in through hole vertical connection Flow connector 45.

Further, L1 is equal to the outer diameter of outer tube 437, and L2 is equal to the outer diameter of central tube 431.In this way, withdrawing fluid from It, can only be from returning in the No way out of the sides L2 after the outlet end of second return flow line 432 enters from the sides L1 of cyclic annular isocon Connector 45 is flowed to flow out.

Further, projection of the end of outer tube 437 on 431 direction of central tube than backflow fittings 45 in central tube Projection on 431 directions is closer to needle point 44.

In this way, the cyclic annular isocon of distributary division 46 is used as steam incoming close to the one side (connection central tube 431) of handle 42 Entrance, be condensed into liquid until steam flows to needle section along central tube 431, later pass through the first return flow line 436 after The end (the reflux liquid inlet mouth of distributary division 46) of outer tube 437 is flowed to using the second return flow line 432, and enters ring joint stream The inner space of pipe, along the spatial joint clearance formed between the lateral wall and the madial wall of cyclic annular throttle pipe of central tube 431, in weight Under force effect, backflow fittings 45 are flowed to by the reflux liquid outlet of distributary division 46.

Further, the initiating terminal of outer tube 437 is located in treatment zone.

Further, the inside of handle 42, at influent stream connector 41 setting with outer carrier pipe is matched is adapted to knot Structure, the arrival end of central tube 431 are connected with the outlet end of adapter structure.Here, as enforceable mode, adapter structure can Can also be convex block to be groove 411, main function is connect with external delivery pipe, and the utility model does not limit herein.

Further, filling multilayer heat-insulating material in thermal insulation layer 433, heat-insulating material include one kind of radiation shield and spacer Or two kinds, the material of radiation shield includes metal foil and/or metal-coated films, and the material of spacer includes non-woven fabrics and/or nylon.

Specifically, multilayer insulant can be added in the vacuum layer of probe to enhance vacuum insulation performance.Multilayer is exhausted Hot material by the one or two containing radiation shield and spacer, the material of radiation shield include metal foil, metal-coated films (such as aluminium, Gold, silver etc.), the material of spacer includes the bad material of the heat conductivilitys such as non-woven fabrics, nylon.Its set-up mode be radiation shield and Parting alternate intervals are arranged, i.e. one layer of spacer layer, one layer of radiation shield layer.

As another embodiment of the utility model, thermal insulation layer 433 can also be vacuum layer.

By thermal insulation layer 433, steam temperature during being transported to tumor locus (treatment zone of needle tubing 43) can be prevented Degree reduces, to influence therapeutic effect.

In addition, the internal face positioned at the needle tubing 43 for the treatment of zone is circumferentially with interior wing 434, interior wing 434 and treatment zone Have spatial joint clearance using as the first return flow line 436 between the outer wall of central tube；Herein essence be exactly with tumor locus near Thermal insulation layer 433 is no longer arranged in this position in close position, but wing 434 in being arranged, reason are to be herein treatment region, adopt With the high efficient heat exchanging performance of interior finned tube, the efficient heat exchange between high-temperature steam and tumor tissues can be realized, to make high temperature Steam useful effect realizes heating ablation in tumor tissues position.It is passed sequentially through first time in the liquid that steam outlet plenum 435 condenses After circulation road 436, the second return flow line 432, distributary division 46 and backflow fittings 45, it is connected to working medium retracting device 5, is used for The recycling of withdrawing fluid.

As a kind of embodiment of the utility model, the outer diameter of needle tubing 43 is 0.5mm~10mm；Length be 1mm~ 500mm；Making material is one or more compounds in stainless steel, titanium, titanium alloy.

Further, needle point 44 is installed, needle point enters inside tumor for puncturing outside the outlet end of central tube 431；Needle The angle of point 44 is 1 °~180 °.44 shape of needle point is circular cone, trigone point, tetragonous point or more ribs point.44 inside of needle point uses carbon One or more of enhancing heat exchange of fiber, wire, woven wire, fin, liquid metal, realize the heating ablation to tumor tissues Effect.

Further, return duct is arranged in the exit of backflow fittings 45, and the shape of return duct is straight tube, bellows or the two Combination.The making material of return duct is rubber, plastics, metal or carbon fiber.

It should be noted that the central tube 431 in needle tubing 43, through 42 region of needle tubing 43 and handle, using as steam Carry out circulation road.The arrival end that steam carrys out circulation road (central tube 431) is connected to by influent stream connector 41 with steam generation facility 2, By steam generation facility 2, steam is conveyed to central tube 431；The outlet end of central tube 431 is connected to steam outlet plenum 435, from The steam that central tube 431 exports is condensed into liquid in steam outlet plenum 435；Pass through the first return flow line 436 later to pass through again later The end (the reflux liquid inlet mouth of distributary division 46) that the second return flow line 432 flows to outer tube 437 is crossed, and enters the inside of throttle pipe Space, along the spatial joint clearance formed between the lateral wall of central tube 431 and the madial wall of throttle pipe, under the effect of gravity, warp The reflux liquid outlet for crossing distributary division 46 flows to backflow fittings 45.

The another aspect of the utility model provides a kind of minimally invasive vapor probe therapeutic equipment for oncotherapy, including Therapeutic equipment host and probe；Therapeutic equipment host includes steam generation facility 2, working medium retracting device 5 and control system 1, is visited Needle is the minimally invasive vapor probe for oncotherapy；Control system 1 is electrically connected with steam generation facility 2, for controlling steam Generating means 2 generates temperature, pressure and the flow of steam.

Referring to figs. 1 to Fig. 2, it is used for the minimally invasive vapor probe therapeutic equipment of oncotherapy, including：

(1) steam generation facility

Steam generation facility 2, under control of the control system, generating high-temperature steam needed for therapeutic process.

In practical application, the heat source of steam generation facility 2 be electrical heating heat source, microwave heating heat source, eddy heating for heating heat source, Light heat source, Ultrasonic Heating heat source, chemical reaction heat source or chemically react direct steam generation heat source in one kind or It is a variety of.

The steam that steam generation facility 2 generates can be vapor, methanol steam, formic acid vapor, alcohol vapour, acetic acid steaming One or more mixtures in vapour, ethyl ester steam, propyl alcohol steam, propionic acid steam, the third fat steam.

(2) probe

Probe, the high-temperature steam for generating steam generation facility are transported to tumor locus and implement efficient heating ablation, And thermal damage is not caused to normal structure on Fine needle biopsy path；

Further, further include the temperature sensor that (backflow fittings or needle section) is set on probe；Temperature sensing Device is connect with control system 1.

Further, temperature sensor is platinum resistance or thermocouple.

Probe is equipped with temperature sensor, for the temperature monitoring in therapeutic process.Temperature sensor is platinum resistance or thermoelectricity It is even；Temperature sensor is mountable to each position of probe, including in needle point, steam comes in circulation road and/or in return flow line.

(3) working medium retracting device

Working medium retracting device, for being recycled, being stored by the working medium after heating ablation.

In practical application, working medium retracting device 5 can be condensation working medium retracting device, physical absorption working medium retracting device, Chemisorption working medium retracting device, chemical reaction working medium retracting device, natural evaporation working medium retracting device, heating evaporation working medium are returned It is one or more in receiving apparatus.Chemically reacting working medium retracting device refers to：The working medium of recycling is consumed by reaction.Pass through work Matter retracting device, on the one hand, Working medium pollution can be prevented；On the other hand, for example, when using adsorption recovery mode, work after absorption It is changed into solid-state and non-liquid, facilitates other follow-up processing of progress.

(4) display device

Display device, the operating status for showing minimally invasive vapor probe therapeutic equipment can also carry out touch control.Display A display may be used in device or more displays realize display function.

(5) control system

Control system is electrically connected with steam generation facility 2, can be needed according to treatment in steam flow, pressure, temperature One or more parameters be adjusted (for control steam generation facility 2 generate steam temperature, pressure and flow).

One or more modes in programmable logic controller (PLC), printed circuit, integrated circuit may be used in control system It realizes.Control system may be used one or more as defeated in keyboard, mouse, touch tablet, touch screen, gesture operation equipment Enter equipment.

Further, the display 3 for being used for the minimally invasive vapor probe therapeutic equipment of oncotherapy is connect with control system 1.

Further, the heat source of steam generation facility 2 is electrical heating heat source, microwave heating heat source, eddy heating for heating heat source, light One kind or more in heat source, Ultrasonic Heating heat source, chemical reaction heat source or chemical reaction direct steam generation heat source Kind.

Further, steam generation facility 2 generate steam be vapor, methanol steam, formic acid vapor, alcohol vapour, One or more mixtures in acetic acid steam, ethyl ester steam, propyl alcohol steam, propionic acid steam, the third fat steam.

Further, working medium retracting device 5 is condensation working medium retracting device, physical absorption working medium retracting device, chemistry suction Attached working medium retracting device, chemical reaction working medium retracting device, natural evaporation working medium retracting device, heating evaporation working medium retracting device In it is one or more.

A kind of minimally invasive vapor probe therapeutic equipment for oncotherapy provided by the utility model, operation principle process For：

In use, control system control steam generation facility 2 generates the high-temperature steam of required flow, pressure and temperature, steam Vapour is controlled in the probe 4 that flow to and connect with device Host, passes through the handle 42 of probe 4, central tube 431 enters needle point position Steam outlet plenum 435 in, needle point position steam outlet plenum 435 release heat, be condensed into liquid；Pass through the first reflux again Channel 436, the second return flow line 432, distributary division 46 and backflow fittings 45, flow to working medium retracting device 5.The utility model In, the setting of circulation road (central tube 431) outer, coaxial in circulation road transmission process, is come in steam by steam in high-temperature steam Return flow line (the first return flow line 436, the second return flow line 432), then the outer, coaxial setting heat insulation layer in return flow line 433；Heat insulation layer 433 is smooth surface structure, and effect has at 2 points：First, it can prevent high-temperature steam from cooling down in transmission process, To influence therapeutic effect；On the other hand, heat insulation layer 433 can be implemented to protect to the normal structure on needle tubing puncture path, prevent Only high-temperature steam makees the normal structure on scald needle tubing puncture path.Second reflux line 432 be set to steam come circulation road (in Heart pipe 431) between heat insulation layer 433, it act as：The temperature of the condensed fluid recycled by reflux line is equally higher, leads to Heat insulation layer 433 is crossed, still the normal structure on needle tubing puncture path can be implemented to protect.By way of three layers of coaxial arrangement, tool There is the advantages of smart structural design.In the utility model, wing 434 in the treatment zone installation of needle tubing 43 can strengthen high-temperature steam With tumor tissues heat exchange, heating ablation effect is improved.Furthermore, it is possible to install pump in the outlet end of the second reflux line 432, pumping Under the action of, after high-temperature steam reaches steam outlet plenum 435 by steam come circulation road (central tube 431), quickly and tumour Tissue carries out heat exchange, and the liquid of condensation quickly leaves tumor tissues by reflux line；And new high-temperature steam is at once Conveying comes and acts on tumor tissues, thus remains that new high-temperature steam continuingly acts on tumor tissues, has treatment It is effective to make a little.Over the course for the treatment of, the work such as pressure, temperature, the flow of steam can be adjusted by control system to join Number, passes through temperature sensor monitors treatment temperature.

Minimally invasive vapor probe therapeutic equipment provided by the utility model for oncotherapy has the following advantages：

Minimally invasive vapor probe therapeutic equipment provided by the utility model for oncotherapy, there is only heats for the course of work It exchanges, no substance enters tissue, is a kind of green therapeutic modality of pure physics, nonhazardous, Small side effects；Operating temperature It is adjustable, it is suitble to the different size of tumour for the treatment of.Also have the advantages that easy to use and working medium is cheap, is easy to be promoted.

The utility model provides a kind of minimally invasive vapor probe and therapeutic equipment for oncotherapy, is that one kind being used for tumour High-temperature steam can be transported to tumor locus and implement efficient heating ablation by the heating ablation equipment for the treatment of, and not to Fine needle biopsy road Normal structure causes thermal damage on diameter, has the advantages that operation principle is simple, easy to use, working medium is cheap, can Pu Hui it is wide Big patient group.

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and Retouching should also regard the scope of protection of the utility model.

Claims (10)

1. a kind of minimally invasive vapor probe for oncotherapy, which is characterized in that including needle tubing (43), be set to the needle tubing (43) needle point (44) of one end and it is set to the handle (42) of the needle tubing (43) opposite side；The handle (42) is internal With the distributary division (46) close to the needle tubing (43), one end far from the needle tubing (43) of the handle (42) has influent stream Connector (41), the side setting backflow fittings (45) close to the needle tubing (43) end of the handle (42)；The backflow fittings (45) arrival end is connected with the reflux liquid outlet of the distributary division (46)；

Wherein, the tube wall of the needle tubing (43) has close to the treatment zone of the needle point (44) and far from the needle point (44) Heat-insulated section, there is in the needle tubing (43) central tube (431), the central tube (431) through the needle tubing (43) and The handle (42), to carry out circulation road as steam；

The end of the central tube (431) is connected to steam outlet plenum (435), the high temperature conveyed by the central tube (431) Steam is condensed into liquid in the steam outlet plenum (435)；

It is circumferentially with interior wing (434), the interior wing (434) and institute positioned at the internal face of the needle tubing (43) of the treatment zone Stating between the outer wall of the central tube (431) for the treatment of zone has spatial joint clearance using as the first return flow line (436), and described first The entrance of return flow line (436) is connected to the steam outlet plenum (435), steam outlet plenum (435) the inner condensat liquid body into Enter to first return flow line (436)；

The stage casing region of the central tube (431) is equipped with the outer tube (437) for being coaxially coated on the central tube (431), described The end of outer tube (437) is set to before the entrance of the backflow fittings (45) using the reflux liquid inlet as the distributary division (46) Mouthful；

Spatial joint clearance between the outer tube (437) and the central tube (431) is described as the second return flow line (432) The outlet end of first return flow line (436) is connected with the arrival end of second return flow line (432), and second reflux is logical The outlet end in road (432) is connected to the reflux liquid inlet mouth of the distributary division (46)；

Between the internal face and the outside wall surface of the outer tube (437) of the needle tubing (43) of the heat-insulated section setting every Thermosphere (433).

2. a kind of minimally invasive vapor probe for oncotherapy according to claim 1, which is characterized in that the distributary division (46) include being sheathed on the cyclic annular isocon of the central tube (431) outside, the inner wall of the ring-type isocon has step-like knot Structure, so that the pipe orifice diameter close to the needle point (44) one end is L1, the end for connecting the outer tube (437) is described The pipe orifice diameter far from the needle point (44) one end of cyclic annular isocon is L2, and outer tube is stretched out in for connecting handle side (437) central tube (431) except end, L1 > L2, the side of the close backflow fittings (45) of the ring-type isocon Through-hole, the backflow fittings (45) described in the through hole vertical connection are arranged in face.

3. a kind of minimally invasive vapor probe for oncotherapy according to claim 1, which is characterized in that the thermal insulation layer (433) interior filling multilayer heat-insulating material, the heat-insulating material include the one or two of radiation shield and spacer, the radiation shield Material include metal foil and/or metal-coated films, the material of the spacer includes non-woven fabrics and/or nylon.

4. a kind of minimally invasive vapor probe for oncotherapy according to claim 1, which is characterized in that the needle tubing (43) outer diameter is 0.5mm~10mm；

And/or

Length is 1mm~500mm；

And/or

Making material is one or more compounds in stainless steel, titanium, titanium alloy.

5. a kind of minimally invasive vapor probe for oncotherapy according to claim 1, which is characterized in that the needle point (44) shape is circular cone, trigone point, tetragonous point or more ribs point；

And/or

Using one or more of enhancings of carbon fiber, wire, woven wire, fin, liquid metal inside the needle point (44) Heat exchange；

And/or

The angle of the needle point (44) is 1 °~180 °.

6. the minimally invasive vapor probe according to claim 1 for oncotherapy, which is characterized in that the backflow fittings (45) return duct is arranged in exit, and the shape of the return duct is straight tube, bellows or combinations thereof；

And/or

The return duct making material is rubber, plastics, metal or carbon fiber.

7. a kind of minimally invasive vapor probe therapeutic equipment for oncotherapy, which is characterized in that including therapeutic equipment host and spy Needle (4)；The therapeutic equipment host includes steam generation facility (2), working medium retracting device (5) and control system (1), the spy Needle (4) is a kind of minimally invasive vapor probe for oncotherapy described in any one of claim 1-6；

The control system (1) is electrically connected with the steam generation facility (2), for controlling the steam generation facility (2) Generate temperature, pressure and the flow of steam；The steam generation facility (2) outlet with it is described it is a kind of be used for oncotherapy it is micro- The influent stream connector (41) of wound vapor probe communicates, for conveying high temperature to a kind of minimally invasive vapor probe for oncotherapy High steam；A kind of backflow fittings (45) of minimally invasive vapor probe for oncotherapy and the working medium retracting device (5) entrance connection, for condensed fluid to be transported to the working medium retracting device (5).

8. a kind of minimally invasive vapor probe therapeutic equipment for oncotherapy according to claim 7, which is characterized in that institute The heat source for stating steam generation facility (2) is electrical heating heat source, microwave heating heat source, eddy heating for heating heat source, light heat source, ultrasound Heat source, chemical reaction heat source chemically react one or more in direct steam generation heat source.

9. a kind of minimally invasive vapor probe therapeutic equipment for oncotherapy according to claim 7, which is characterized in that institute The steam for stating steam generation facility (2) generation is vapor, methanol steam, formic acid vapor, alcohol vapour, acetic acid steam, ethyl ester One or more mixtures in steam, propyl alcohol steam, propionic acid steam, the third fat steam.

10. a kind of minimally invasive vapor probe therapeutic equipment for oncotherapy according to claim 7, which is characterized in that It further include the temperature sensor being set on a kind of minimally invasive vapor probe for oncotherapy；The temperature sensor with Control system (1) connection, the temperature sensor are platinum resistance or thermocouple.