CN110478027A - A kind of cryoablation needle of adjustable targeting district - Google Patents
A kind of cryoablation needle of adjustable targeting district Download PDFInfo
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- CN110478027A CN110478027A CN201910751318.6A CN201910751318A CN110478027A CN 110478027 A CN110478027 A CN 110478027A CN 201910751318 A CN201910751318 A CN 201910751318A CN 110478027 A CN110478027 A CN 110478027A
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- Prior art keywords
- shank
- instlated tubular
- air inlet
- inlet pipe
- pipe fitting
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- 230000008685 targeting Effects 0.000 title claims abstract description 73
- 230000001105 regulatory effect Effects 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims description 75
- 239000007787 solid Substances 0.000 claims 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 9
- 238000003780 insertion Methods 0.000 description 9
- 230000037431 insertion Effects 0.000 description 9
- 208000027418 Wounds and injury Diseases 0.000 description 6
- 238000002679 ablation Methods 0.000 description 6
- 238000007710 freezing Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 206010028980 Neoplasm Diseases 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 230000003902 lesion Effects 0.000 description 3
- 241000220324 Pyrus Species 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 230000001575 pathological effect Effects 0.000 description 2
- 235000021017 pears Nutrition 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 238000002560 therapeutic procedure Methods 0.000 description 2
- 208000001034 Frostbite Diseases 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000036592 analgesia Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 210000003101 oviduct Anatomy 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/02—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00577—Ablation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00791—Temperature
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/02—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
- A61B2018/0231—Characteristics of handpieces or probes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/02—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
- A61B2018/0293—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques using an instrument interstitially inserted into the body, e.g. needle
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Otolaryngology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The present invention relates to a kind of cryoablation needles of adjustable targeting district, including regulating member and fixation member, the regulating member can be axially moved to adjust the length of targeting district relative to the fixation member: the fixation member includes instlated tubular and muffler, and the muffler is inserted into from the rear end of the instlated tubular and is fixedly connected with the instlated tubular；The regulating member includes shank and air inlet pipe fitting, and the shank is coated on the instlated tubular and is slidably connected with the instlated tubular；The air inlet pipe fitting is inserted into from the rear end of the instlated tubular and extends in the shank, and the air inlet pipe fitting is fixedly connected with the shank.The present invention uses the axial movement of shank linkage air inlet pipe fitting to realize the length adjustment of targeting district, solves existing cryoablation needle and causes to treat complicated for operation and easy the technical issues of injuring periphery health tissues because targeting district is fixed.
Description
Technical field
The present invention relates to cryoablation needle, in particular to a kind of cryoablation needle of adjustable targeting district.
Background technique
Cryoablation is a kind of therapeutic modality that pathological tissues are destroyed using low temperature, it is considered to be a kind of to treat pernicious swell
Efficient, the invasive methods of tumor.Cryoablation technical operation simplicity, few intercurrent disease, effectively analgesia, moreover, the ice hockey that ablation is formed
Sharpness of border, convenient for observation, can the ablation of safety close on the lesion of big blood vessel or important organ.Cryoablation can also take spininess
The mode of freezing keeps ablation range bigger, is suitable for big lesion and form Irregular focus.
Targeting district (i.e. effective freeze space) is located at the syringe needle leading portion of cryoablation needle, and length determines the big of freezing range
Small, targeting district is longer, and the ice hockey for freezing formation is bigger.But the targeting district of existing cryoablation needle is mostly fixed structure,
The size of its ice hockey generated is also fixation, and in clinical application, doctor need to select different targeting districts according to the size of lesion
The cryoablation needle of length.For pathological tissues in irregular shape, the probe using a variety of different sizes is needed, it is reciprocal to carry out
Repeatedly treatment operation, and easily injure periphery health tissues.Such as " pears " shape tumour small for the big tail end of head end, it is clinical at this stage
In can be used it is single the cryoablation needle of long targeting district is melted on a large scale, but in this way can the middle part of " pears " one enclose damage compared with
More normal tissues；Can also front and back place the cryoablation needle freezing different time of two short targeting districts to realize ablation, but
It will increase the expense and difficulty of operation in this way, therefore, be badly in need of the cryoablation needle that exploitation designs a kind of adjustable targeting district.
Summary of the invention
The purpose of the present invention is to provide a kind of cryoablation needles of adjustable targeting district, to solve existing cryoablation needle
It causes to treat complicated for operation and easy the technical issues of injuring periphery health tissues because targeting district is fixed.
To solve the above-mentioned problems, the present invention provides a kind of cryoablation needles of adjustable targeting district, including regulating member
And fixation member, the regulating member can be axially moved to adjust the length of targeting district relative to the fixation member:
The fixation member includes instlated tubular and muffler, the muffler from the insertion of the rear end of the instlated tubular and and its
It is fixedly connected；
The regulating member includes shank and air inlet pipe fitting, the shank be coated on the instlated tubular and with its company of sliding
It connects；The air inlet pipe fitting is inserted into from the rear end of the instlated tubular and extends in the shank, the air inlet pipe fitting and the needle
Bar is fixedly connected, and the shank adjusts the length of targeting district by linkage air inlet pipe fitting.
Preferably, being equipped with counterbore in the needle point of the shank, the counterbore is connected to the inside of the shank, the air inlet
The front end of pipe fitting is fixed in the counterbore；Several throttle orifices are opened up on the air inlet pipe fitting, several throttle orifices are always positioned at institute
State the front of instlated tubular；Or,
The outer wall of the air inlet pipe fitting is installed on the inner wall of the shank, and the front end of the air inlet pipe fitting opens up throttling
Hole.
Preferably, dynamic sealing between the shank and the instlated tubular.
Preferably, passing through sealing element dynamic sealing between the shank and the instlated tubular:
The sealing element includes sealing ring, and the shank or instlated tubular are equipped with the groove for accommodating sealing ring, the sealing
Dynamic sealing is enclosed to be arranged between the shank and the instlated tubular；Or,
The sealing element includes sealing ring and sealing ring baffle, and the sealing ring baffle is installed in the shank or instlated tubular
On, the sealing ring baffle is equipped with the groove for accommodating the sealing ring, the sealing ring dynamic sealing setting the shank with
Between the instlated tubular.
Preferably, the sealing ring baffle includes front apron and rear baffle, after the front apron is sheathed on the shank
End, the rear baffle are screwed with the front apron and connect, and are formed between the front apron and the rear baffle towards described
The groove of instlated tubular, the sealing ring are embedded in the groove.
Preferably, the muffler is inserted into from the rear end of the instlated tubular, the outer wall of the muffler and the instlated tubular
Rear end seamless be fixedly connected.
Preferably, the air inlet pipe fitting is scalable, the air inlet pipe fitting is inserted into and extends to from the rear end of the instlated tubular
In the shank, the outer wall of the air inlet pipe fitting with the rear end of the instlated tubular is seamless is fixedly connected.
Preferably, at least one section of the air inlet pipe fitting is spring structure, the spring structure can be with the shank phase
It is stretched or compressed for the axial movement of the instlated tubular.
Preferably, the air inlet pipe fitting includes J-T slot, finned tube and air inlet pipe, the rear and front end difference of the finned tube
It is connected to the J-T slot and air inlet pipe；
The leading portion wound into spring structure of the J-T slot, the spring structure are always positioned in the shank, and are located at institute
State the front end of instlated tubular；
Or,
The middle section wound into spring structure of the J-T slot, and be always positioned in the instlated tubular；
Or,
It is connected to spring structure between the J-T slot and finned tube or/and between the finned tube and air inlet pipe, this spring knot
Structure is bourdon tube.
Preferably, the fixation member further includes mandrel, the mandrel is inserted into from the rear end of the instlated tubular；
The finned tube turns to several spiral coils, and the mandrel passes through the spiral coil of the finned tube.
Preferably, the air inlet pipe fitting includes J-T slot, spring structure and air inlet pipe, the rear and front end of the spring structure
It is connected to respectively with the J-T slot and air inlet pipe, is additionally provided with fin on the outside of this spring structure；
The fixation member further includes mandrel, and the mandrel is inserted into from the rear end of the instlated tubular, and the mandrel passes through institute
State the spiral coil of spring structure；
Preferably, the outer wall of the mandrel with the rear end of the instlated tubular is seamless is fixedly connected.
Preferably, the fixation member further includes thermometric line, the thermometric line is passed through out of mandrel, and through the instlated tubular
Inside extend forward, the temperature measuring point of the thermometric line is located at the front end of the instlated tubular.
Preferably, the mandrel is hollow tubular structure, it is able between the thermometric line and mandrel by the way that glue is perfused
Sealing.
Preferably, the regulating member further includes adjusting driving lever, the fixation member further includes handle:
The handle is wrapped in the outside of the instlated tubular and is fixedly connected with the instlated tubular, on the side wall of the handle
Equipped with regulating tank, the adjusting driving lever passes through the regulating tank and is fixedly connected with the shank, axial that described adjust is pushed to dial
Bar, the adjusting driving lever drive the relatively described instlated tubular of shank to axially move.
Preferably, being additionally provided with several dead lock for safety slots on the side wall of the handle, the dead lock for safety slot position is in the tune
It saves the outside of slot and communicates therewith, the adjusting driving lever, which can stick into the dead lock for safety slot, to be fixed.
Preferably, the dead lock for safety slot includes radial rotating slot and security card slot, the radial rotating slot position is in described
Radially, the radial rotating slot is arranged in the outside of the regulating tank and communicates therewith shank；The security card slot is located at
In the axial direction of the shank, the security card slot is arranged in the outside of the radial rotating slot and communicates therewith；
Along circumferentially rotating in the adjusting driving lever to the radial rotating slot for the handle, then move axially again described
Driving lever is adjusted to be caught in the security card slot.
Preferably, the tube wall of the instlated tubular is double-layer vacuum wall:
The instlated tubular includes heat-insulated inner tube and insulated exterior duct, the fixed company in the both ends of the heat-insulated inner tube and insulated exterior duct
It connects；Vacuum interlayer is formed between the heat-insulated inner tube and insulated exterior duct.
Compared with prior art, there are following technical effects by the present invention:
1, the present invention uses the axial movement of shank linkage air inlet pipe fitting to realize the length adjustment of targeting district, solves existing
Some cryoablation needles cause to treat complicated for operation and easy the technical issues of injuring periphery health tissues because targeting district is fixed.
2, the cryoablation needle of existing adjustable targeting district at least needs to seal there are two position, due to existing sealing
Structure is all made of sealing ring to realize sealing, and sealing ring is that equipment is easily lost, therefore, it is necessary to the position of sealing is more, then
The probability for being easy to produce gas leakage is bigger, once gas leakage occurs in surgical procedure, then very likely can cause to freeze to patient and doctor
Wound.Therefore, the present invention reduces the quantity of sealing ring to one, reduces the probability of gas leakage, improves cold therapy operation
Safety.
3, air inlet pipe fitting is retractable structure, and air inlet pipe fitting front end is fixedly connected with shank front end, it is ensured that targeting district tune
The position of throttle orifice is moved together with shank during section, and then ensures that ice hockey can grow forward covering point of a knife, avoids tune
During section throttle orifice it is too far away from needle point and cause operation in needle point need guiding through tumour and be inserted into normal tissue.
4, it is equipped with the dead lock for safety slot of secured adjusted driving lever at handle, when adjusting driving lever is moved to required position, passes through
Dead lock for safety slot is fixed driving lever is adjusted, and not only prevents from causing targeting section length when regulating member is mobile relative to fixed component
It is unexpected to adjust, moreover, by the front and back end of air inlet pipe fitting being fixedly connected between shank and instlated tubular respectively, such cooperation
Structure also ensures shank and will not be gone out by high pressure gas.
Certainly, it implements any of the products of the present invention and does not necessarily require achieving all the advantages described above at the same time.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it is therefore apparent that drawings in the following description are only some embodiments of the invention, for ability
For field technique personnel, without creative efforts, it is also possible to obtain other drawings based on these drawings.It is attached
In figure:
Fig. 1 is a kind of structure principle chart of the cryoablation needle of adjustable targeting district of the present invention；
Fig. 2 is that most the structural schematic diagram in targeting district is arranged in spring structure to targeting district in short-term in the present invention；
The structural schematic diagram in targeting district is arranged in spring structure when Fig. 3 is targeting district longest in the present invention；
Fig. 4 is that most the structural schematic diagram in instlated tubular is arranged in spring structure to targeting district in short-term in the present invention；
The structural schematic diagram in instlated tubular is arranged in spring structure when Fig. 5 is targeting district longest in the present invention；
Fig. 6 is that most spring structure serves as the structural schematic diagram of finned tube to targeting district in short-term in the present invention；
Spring structure serves as the structural schematic diagram of finned tube when Fig. 7 is targeting district longest in the present invention；
Fig. 8 is to adjust driving lever in the present invention to be located at the structural schematic diagram in regulating tank；
Fig. 9 is the structural schematic diagram for adjusting driving lever in the present invention and being located at radial rotating slot；
Figure 10 is the structural schematic diagram for adjusting driving lever in the present invention and being located at security card slot.
Specific embodiment
It is detailed to a kind of cryoablation needle progress of adjustable targeting district provided by the invention below with reference to Fig. 1 to Figure 10
Description, the present embodiment implemented under the premise of the technical scheme of the present invention, gives detailed embodiment and specific
Operating process, but protection scope of the present invention is not limited to following embodiments, and those skilled in the art are not changing essence of the invention
In the range of mind and content, can it be modified and be polished.
Please refer to Fig. 1 to Fig. 7, a kind of cryoablation needle of adjustable targeting district, including regulating member 1 and fixation member 2, institute
Stating regulating member 1 can be axially moved relative to the fixation member 2 in the adjustable targeting of outer surface formation length of ablation needle
The thermal insulation areas 4 that area 3 and length are fixed:
The fixation member 2 includes instlated tubular 21 and muffler 22, and the muffler 22 is from the rear end of the instlated tubular 21
It is inserted into and is fixedly connected with the instlated tubular 21；
The regulating member 1 includes shank 11 and air inlet pipe fitting 12, and the shank 11 is coated on the instlated tubular 21 simultaneously
It is slidably connected with the instlated tubular 21；The air inlet pipe fitting 12 is inserted into from the rear end of the instlated tubular 21 and extends to the shank
In 11, the air inlet pipe fitting 12 is fixedly connected with the shank 11.
In the present embodiment, the instlated tubular 21 is straight tube.The tube wall of instlated tubular 21 is made of heat-barrier material, can also be with
Using double-layer vacuum wall, the present invention is not particularly limited, the preferred double-layer vacuum wall of the present embodiment, i.e., the described instlated tubular 21 include every
Hot inner tube 211 and insulated exterior duct 212, the heat-insulated inner tube 211 are fixedly connected with the both ends of insulated exterior duct 212；It is described heat-insulated interior
Vacuum interlayer is formed between pipe 211 and insulated exterior duct 212.
The internal diameter of 21 back segment of instlated tubular can be big as the internal diameter of leading portion, can also with different big, the present invention to this not
Do concrete restriction.In the present embodiment, since the rear end of instlated tubular needs to accommodate fin, before the internal diameter of back segment needs to compare
The internal diameter of section is big.In order to enable therefore the connection that leading portion and back segment can link up is connected between leading portion and rear end by oviduct.
In the present embodiment, the pipe thickness of each component part of instlated tubular 21 is identical.
In the present embodiment, the front end of shank 11 is equipped with needle point 111, and it is closed that needle point 111, which is obstructed,；Shank 11
The interior accommodating space with accommodating 12 leading portion of air inlet pipe fitting and 21 leading portion of instlated tubular, in the present embodiment, shank 11 are straight barrel type
Structure, the vertical range between the front end of needle point 111 and the front end face of instlated tubular 21 is the length of targeting district 3, with shank 11
Axially sliding relative between instlated tubular 21, the length of this targeting district 3 are variable；The length of instlated tubular 21 is thermal insulation areas 4
Length, this length is fixed.
In the present invention, the front end of air inlet pipe fitting 12 is fixedly connected with the front end of shank 11, and the front end of air inlet pipe fitting 12 is logical
It crosses and opens up throttle orifice 1211 cold air is delivered in shank 11, below in conjunction with two kinds of embodiments to the setting structure of throttle orifice 1211
It elaborates.
As one embodiment, Fig. 4 to Fig. 7 is please referred to, is equipped with counterbore, the counterbore in the needle point 111 of the shank 11
It is connected to the inside of the shank 11, the front end of the air inlet pipe fitting 12 is inserted and secured in the counterbore；The air inlet pipe
Several throttle orifices 1211 are opened up on part 12, several throttle orifices 1211 are always positioned at the front of the instlated tubular 21, i.e., regardless of shank
How to be slided relatively between 11 and instlated tubular 21, throttle orifice 1211 will not all enter in instlated tubular 21.
Further, several throttle orifices 1211 being axially or radially uniformly distributed along air inlet pipe fitting 12 respectively, throttle orifice
1211 distribution segment length should no more than in most short targeting district 3 111 rear end face of needle point arrive thermal wall front end face length, with guarantor
Targeting district 3 is demonstrate,proved in any adjusting position, throttle orifice 1211 is always positioned at the inside of targeting district 3, if 1211, partial throttling hole
In the inside of instlated tubular 21, it will cause part cooling capacity to release in targeting district 3.
Alternatively embodiment, please refers to Fig. 2 and Fig. 3, and the outer wall of 12 front end of air inlet pipe fitting is installed in described
On the inner wall of shank 11, the front end of the air inlet pipe fitting 12 opens up throttle orifice 1211.
In the present invention, dynamic sealing is used between front end, shank 11 and instlated tubular 21.The present invention to rear end muffler and
Air inlet pipe fitting uses sealing ring to seal or directly seamless be fixedly connected to realize sealing effect between instlated tubular respectively
Mode be not particularly limited.In the prior art, at least there are two positions for the cryoablation needle of existing adjustable targeting district 3
Need to seal, due to existing sealing structure be all made of sealing ring realize sealing, and sealing ring be easily be lost equipment, because
This, the position for needing to seal is more, then the probability for being easy to produce gas leakage is bigger, once gas leakage occurs in surgical procedure, then pole has
Frostbite may be caused to patient and doctor.Therefore, the present invention is preferably reduced the quantity of sealing ring to one, reduces gas leakage
Probability, improve the safety of cold therapy operation, specific structure is as follows:
In the present embodiment, the internal diameter of shank 11 is greater than the outer diameter of instlated tubular 21, inner wall and the instlated tubular 21 of shank 11
There is gap, cooling capacity is revealed from this gap location in order to prevent, therefore, using dynamic between shank 11 and instlated tubular 21 between outer wall
Sealing.
Further, pass through 13 dynamic sealing of sealing element between the shank 11 and the instlated tubular 21:
As an implementation, the sealing element 13 includes sealing ring 131, the inner wall or instlated tubular 21 of the shank 11
Outer wall on offer annular groove, sealing ring 131 is embedded in this groove, and 131 dynamic sealing of sealing ring is arranged described
Between shank 11 and the instlated tubular 21；
Alternatively embodiment, the sealing element 13 include sealing ring 131 and sealing ring baffle, sealing ring 131
It is ring structure with sealing ring baffle, the sealing ring baffle is installed on the shank 11 or instlated tubular 21, the sealing
It encloses baffle and is equipped with the groove for accommodating the sealing ring 131, when sealing ring baffle is installed on shank 11, this groove surface is opposite
Instlated tubular 21, sealing ring 131 is fixed to be close in this groove and with the outer wall of instlated tubular 21, with seal the shank 11 with it is described
Gap between instlated tubular 21；When sealing ring baffle is installed on the outer wall of instlated tubular 21, this groove surface is close against shank 11
Seal 131 is fixed to be close in this groove and with the inner wall of shank 11, to seal between the shank 11 and the instlated tubular 21
Gap.
Sealing ring baffle can be integral structure (please referring to Fig. 1), is also possible to detachable structure and (please refers to Fig. 2 to figure
7), the present invention is not particularly limited this.For the ease of the replacement of sealing ring 131, the preferred detachable-type sealed circle of the present embodiment
Baffle, i.e. sealing ring baffle include front apron 132 and rear baffle 133, and front apron 132 is detachably connected with rear baffle 133, and such as two
Person's clamping is threadedly coupled.The present embodiment is preferred, and front apron 132 is sheathed on the rear end of (fixation) shank 11, after described
Baffle 133 is screwed with the front apron 132 and connect, and is formed between the front apron 132 and the rear baffle 133 towards institute
The groove of instlated tubular 21 is stated, the sealing ring 131 is embedded in the groove.
In the present embodiment, the front end of ablation needle is sealed using sealing element 13, and rear end does not have to, specific structure are as follows:
As one embodiment, the rear end of instlated tubular 21 is installed with aft bulkhead, and muffler insertion hole is offered on aft bulkhead
It is inserted into hole with air inlet pipe fitting, the muffler 22 is inserted into instlated tubular 21 from muffler insertion hole, and is inserted with muffler
Enter that hole is seamless to be fixedly connected；
The air inlet pipe fitting 12 is inserted into instlated tubular 21 from air inlet pipe fitting insertion hole and extends to the needle
The front end of bar 11, hole is seamless is fixedly connected for the outer wall of the air inlet pipe fitting 12 and the insertion of air inlet pipe fitting.
Alternatively embodiment, no setting is required the rear end of instlated tubular 21 aft bulkhead, in the rear end of instlated tubular 21, return-air
Directlyed adopt between the inner wall of the outer wall and instlated tubular 21 of pipe 22 and air inlet pipe fitting 12 it is seamless be welded and fixed, i.e., filled out by solder
Gap between the inner wall of the outer wall and instlated tubular 21 of full muffler 22 and air inlet pipe fitting 12.
In the present invention, the front end of air inlet pipe fitting 12 and shank 11 are fixed, and rear end and instlated tubular 21 are fixed, but shank 11 with
Instlated tubular 21 moves to axial, and therefore, the length of air inlet pipe fitting 12 must be telescopic.In order to meet air inlet pipe fitting
12 scalability, air inlet pipe fitting 12 can have certain flexibility, be such as made of flexible material；It can also be by air inlet pipe fitting
12 are made with telescopic spring structure, and the present invention is not particularly limited this, and the present embodiment is preferably made spring structure, such as
At least one section of air inlet pipe fitting 12 is spring structure.Since air inlet pipe fitting 12 includes J-T slot 121, finned tube 122 and air inlet pipe
123, the rear and front end of the finned tube 122 is connected to the J-T slot 121 and air inlet pipe 123 respectively.In order to realize air inlet pipe fitting
12 scalability as one embodiment can be between J-T slot 121 and finned tube 122 or/and finned tube 122 and air inlet pipe
Increase spring structure (this spring structure is bourdon tube), the connecting spring such as between J-T slot 121 and finned tube 122 between 123
Pipe, then the bourdon tube is connected to the J-T slot 121, finned tube 122 respectively；Such as between finned tube 122 and air inlet pipe 123
Connecting spring pipe, then bourdon tube is connected to finned tube 122 with air inlet pipe 123 respectively.
Alternatively embodiment, at least one section of wound into spring structure 1212 of the air inlet pipe fitting 12, the bullet
Spring structure 1212 can be stretched or compressed with the shank 11 relative to the axial movement of the instlated tubular 21, below in conjunction with attached
Figure illustrates this embodiment.
The air inlet pipe fitting 12 includes J-T slot 121, and the J-T slot 121 is located at the leading portion of the air inlet pipe fitting 12, J-T slot
121 front end is fixed on the front end of shank 11, as one embodiment, please refers to Fig. 2 and Fig. 3, the leading portion of the J-T slot 121
Wound into spring structure 1212, the spring structure 1212 are always positioned in the shank 11, and are located at the instlated tubular 21
Front end, regardless of relatively moving between shank 11 and instlated tubular 21, spring structure 1212 is always positioned in targeting district 3；As
Another embodiment please refers to Fig. 4 and Fig. 5, the middle section wound into spring structure 1212 of the J-T slot 121, regardless of shank 11
How to be relatively moved between instlated tubular 21, spring structure 1212 is always positioned in the instlated tubular 21.
In the present embodiment, throttle orifice 1211 is located on J-T slot 121.
In the present embodiment, the fixation member 2 further includes mandrel 24, and the mandrel 24 is from the rear end of the instlated tubular 21
Insertion；
Further, as one embodiment, core shaft insertion hole is offered on the aft bulkhead of instlated tubular 21, mandrel 24 is from core
Shaft insertion hole is inserted into instlated tubular 21, and mandrel 24 is fixedly connected with core shaft insertion hole gapless.Alternatively implement
Example, no setting is required the rear end of instlated tubular 21 aft bulkhead, i.e., in the rear end of instlated tubular 21, the outer wall of mandrel 24 is interior with instlated tubular 21
Directlyed adopt between wall it is seamless be welded and fixed, i.e., filled up by solder between the outer wall of mandrel 24 and the inner wall of instlated tubular 21
Gap.
In the present invention, air inlet pipe fitting 12 may include finned tube, can also be not provided with finned tube, but pass through spring structure
Finned tube is served as, specific structure is as follows:
When air inlet pipe fitting 12 includes finned tube, i.e., air inlet pipe fitting 12 includes J-T slot 121, finned tube 122 and air inlet pipe 123,
The rear and front end of the finned tube 122 is connected to the J-T slot 121 and air inlet pipe 123 respectively, and the finned tube 122 turns to
Several spiral coils, the mandrel 24 pass through the spiral coil of the finned tube 122；The leading portion of J-T slot 121 or middle section are provided with spring
Structure 1212, specific structure has been described above, and details are not described herein again.
When air inlet pipe fitting 12 does not include finned tube 122, spring structure 122' serves as finned tube 122, please refers to Fig. 6 and figure
7, i.e. air inlet pipe fitting 12 includes J-T slot 121, spring structure 122' and air inlet pipe 123, settable spring structure on J-T slot 121
1212, it can also be not provided with spring structure 1212, the present invention is not particularly limited, and spring knot is not arranged with J-T slot 121 in the present embodiment
For structure 1212, the rear and front end of spring structure 122' is connected to the J-T slot 121 and air inlet pipe 123 respectively, spring structure
122' is always positioned in the instlated tubular 21, and the mandrel 24 passes through the spring structure 122', this spring structure 122''s is outer
Side is additionally provided with fin.
Further, this spring structure 122' is hollow tube, material be stainless steel or spring steel or Nitinol or its
He remembers metalloid material.
In the present embodiment, air inlet pipe 123 with the aft bulkhead of instlated tubular 21 is seamless is fixedly connected.
In the present invention, the fixation member 2 further includes thermometric line 25, and the thermometric line 25 is passed through out of mandrel 24, and
Inside through the instlated tubular 21 extends forward, and the temperature measuring point 251 of the thermometric line 25 is located at the front end of the instlated tubular 21.
Further, the mandrel 24 is hollow tubular structure, passes through perfusion between the thermometric line 25 and mandrel 24
Glue is sealed.
In the present invention, directly regulating member 1 can be operated manually, moves it can relative to fixation member,
Regulating member 1 can also be operated indirectly by adjusting driving lever, the present invention is not particularly limited this, and the present embodiment is with the
It is described in detail for two kinds of embodiments, specific structure is as follows:
Fig. 2 to Figure 10 is please referred to, the regulating member 1 further includes adjusting driving lever 14, and the fixation member 2 further includes handle
23:
The handle 23 is wrapped in the outside of the instlated tubular 21 and is fixedly connected with the instlated tubular 21, the handle 23
Side wall be equipped with regulating tank 231, regulating tank 231 is strip and the axial direction setting along shank 11, and the adjusting driving lever 14 wears
It crosses the regulating tank 231 and is fixedly connected with the shank 11, it is axial to push the adjusting driving lever 14,14 band of adjusting driving lever
It moves the relatively described instlated tubular 21 of the shank 11 to axially move, that is, slides axially and adjust driving lever 14, adjusting driving lever 14 drives whole
The relatively fixed component 2 of a regulating member 1 axially moves.
When adjusting driving lever 14 and being located at the rearmost end of regulating tank 231, the position of 11 relative insulation pipe 21 of shank near rear, this
When targeting district 3 length it is minimum, freeze caused by ice hockey it is minimum.When adjusting driving lever 14 is adjusted to the front end of regulating tank 231
When, 11 relative insulation pipe 21 of shank is reached near front position, and the length of targeting district 3 is maximum at this time, freezes generated ice hockey
It is maximum.
As one embodiment, in most short targeting district 3, (spring structure is in nature in the raw for spring structure
When, the spiral coil of spring structure can be gapless close coiling, but the present invention is not limited thereto), adjust long targeting district 3
When, spring structure is in tensional state；
Alternatively embodiment, in longest targeting district 3, (spring structure is in nature in the raw for spring structure
It is with gap between the spiral coil of spring structure when state), when adjusting short targeting district 3, spring structure is in compressive state；
As the third embodiment, in the targeting district 3 of intermediate length, spring structure (spring structure in the raw
It is with gap between the spiral coil of spring structure in nature), when targeting district 3 long by intermediate 3 position tune of targeting district
Spring is in tensional state, and spring is in compressive state when targeting district 3 short by intermediate 3 position tune of targeting district.
In the present invention, Fig. 8 to Figure 10 is please referred to, several dead lock for safety slots, institute are additionally provided on the side wall of the handle 23
Dead lock for safety slot position is stated in the outside of the regulating tank 231 and is communicated therewith, the adjusting driving lever 14 can stick into the safety lock
It is fixed in dead slot.In the present invention, if the frictional force of the dynamic sealing between shank 11 and instlated tubular 21 is sufficiently large, doctor
When curing to patient, then shank 11 will not be slided referring now to instlated tubular 21, therefore, in shank 11 and instlated tubular
In the case that frictional force between 21 is sufficiently large, can not also be limited by dead lock for safety slot to driving lever 14 is adjusted, only according to
By its frictional force.
Further, the dead lock for safety slot includes radial rotating slot 232 and security card slot 233, the radial rotating slot
232 are located at the shank 11 radially, and the radial rotating slot 232 is arranged in the outside of the regulating tank 231 and connects with it
It is logical；The security card slot 233 is located in the axial direction of the shank 11, and the security card slot 233 is arranged in the radial rotating slot
232 outside simultaneously communicates therewith；The adjusting driving lever 14 is circumferentially rotated to the radial rotating slot 232 along the handle 23
It is interior, the adjusting driving lever 14 is then moved axially again to be caught in the security card slot 233, the direction of security card slot 233 and spring
The direction of power is identical.
In the present invention, by the front and back end of dead lock for safety slot and air inlet pipe fitting 12 respectively with shank 11 and instlated tubular 21
The mode being fixedly connected, it is ensured that shank 11 will not be gone out by high pressure gas.
Claims (16)
1. a kind of cryoablation needle of adjustable targeting district, which is characterized in that including regulating member and fixation member, the adjustment portion
Part can be axially moved to adjust the length of targeting district relative to the fixation member:
The fixation member includes instlated tubular and muffler, and the muffler is inserted into and is secured to from the rear end of the instlated tubular
Connection；
The regulating member includes shank and air inlet pipe fitting, and the shank is coated on the instlated tubular and is slidably connected with it；
The air inlet pipe fitting is inserted into from the rear end of the instlated tubular and extends in the shank, and the air inlet pipe fitting and the shank are solid
Fixed connection, the shank adjust the length of targeting district by linkage air inlet pipe fitting.
2. a kind of cryoablation needle of adjustable targeting district as described in claim 1, which is characterized in that in the needle point of the shank
Equipped with counterbore, the counterbore is connected to the inside of the shank, and the front end of the air inlet pipe fitting is fixed in the counterbore；It is described
Several throttle orifices are opened up on air inlet pipe fitting, several throttle orifices are always positioned at the front of the instlated tubular；Or,
The outer wall of the air inlet pipe fitting is installed on the inner wall of the shank, and the front end of the air inlet pipe fitting opens up throttle orifice.
3. a kind of cryoablation needle of adjustable targeting district as described in claim 1, which is characterized in that the shank and it is described every
Dynamic sealing between heat pipe.
4. a kind of cryoablation needle of adjustable targeting district as claimed in claim 3, which is characterized in that the shank and it is described every
Pass through sealing element dynamic sealing between heat pipe:
The sealing element includes sealing ring, and the shank or instlated tubular are equipped with the groove for accommodating sealing ring, and the sealing ring is dynamic
It is sealingly disposed between the shank and the instlated tubular；Or,
The sealing element includes sealing ring and sealing ring baffle, and the sealing ring baffle is installed on the shank or instlated tubular,
The sealing ring baffle is equipped with the groove for accommodating the sealing ring, the sealing ring dynamic sealing setting the shank with it is described
Between instlated tubular.
5. a kind of cryoablation needle of adjustable targeting district as claimed in claim 4, which is characterized in that the sealing ring baffle packet
Front apron and rear baffle are included, the front apron is sheathed on the rear end of the shank, and the rear baffle and the front apron screw thread are solid
Fixed connection, forms the groove towards the instlated tubular between the front apron and the rear baffle, the sealing ring is embedded
In the groove.
6. a kind of cryoablation needle of adjustable targeting district as described in claim 1, which is characterized in that the muffler is from described
The rear end of instlated tubular is inserted into, the outer wall of the muffler with the rear end of the instlated tubular is seamless is fixedly connected.
7. a kind of cryoablation needle of adjustable targeting district as described in claim 1, which is characterized in that the air inlet pipe fitting can be stretched
Contracting, the air inlet pipe fitting be inserted into from the rear end of the instlated tubular and extends in the shank, the outer wall of the air inlet pipe fitting and
The rear end of the instlated tubular is seamless to be fixedly connected.
8. a kind of cryoablation needle of adjustable targeting district as claimed in claim 7, which is characterized in that the air inlet pipe fitting is extremely
Few one section is spring structure, the spring structure can be stretched with the shank relative to the axial movement of the instlated tubular or
Compression.
9. a kind of cryoablation needle of adjustable targeting district as claimed in claim 8, which is characterized in that the air inlet pipe fitting includes
J-T slot, finned tube and air inlet pipe, the rear and front end of the finned tube are connected to the J-T slot and air inlet pipe respectively；
The leading portion wound into spring structure of the J-T slot, the spring structure are always positioned in the shank, and be located at it is described every
The front end of heat pipe；
Or,
The middle section wound into spring structure of the J-T slot, and be always positioned in the instlated tubular；
Or,
It is connected to spring structure between the J-T slot and finned tube or/and between the finned tube and air inlet pipe, this spring structure is
Bourdon tube.
10. a kind of cryoablation needle of adjustable targeting district as claimed in claim 9, which is characterized in that the fixation member is also
Including mandrel, the mandrel is inserted into from the rear end of the instlated tubular；
The finned tube turns to several spiral coils, and the mandrel passes through the spiral coil of the finned tube.
11. a kind of cryoablation needle of adjustable targeting district as claimed in claim 8, which is characterized in that the air inlet pipe fitting packet
J-T slot, spring structure and air inlet pipe are included, the rear and front end of the spring structure is connected to the J-T slot and air inlet pipe respectively, this
Fin is additionally provided on the outside of spring structure；
The fixation member further includes mandrel, and the mandrel is inserted into from the rear end of the instlated tubular, and the mandrel passes through the bullet
The spiral coil of spring structure.
12. a kind of cryoablation needle of adjustable targeting district as described in claim 10 or 11, which is characterized in that the mandrel
Outer wall with the rear end of the instlated tubular is seamless is fixedly connected.
13. a kind of cryoablation needle of adjustable targeting district as described in claim 10 or 11, which is characterized in that the fixed part
Part further includes thermometric line, and the thermometric line is passed through out of mandrel, and the inside through the instlated tubular extends forward, the thermometric line
Temperature measuring point be located at the front end of the instlated tubular.
14. a kind of cryoablation needle of adjustable targeting district as described in claim 1, which is characterized in that the regulating member is also
Including adjusting driving lever, the fixation member further includes handle:
The handle is wrapped in the outside of the instlated tubular and is fixedly connected with the instlated tubular, and the side wall of the handle is equipped with
Regulating tank, the adjusting driving lever passes through the regulating tank and is fixedly connected with the shank, axial to push the adjusting driving lever, institute
Stating adjusting driving lever drives the relatively described instlated tubular of shank to axially move.
15. a kind of cryoablation needle of adjustable targeting district as claimed in claim 14, which is characterized in that the side wall of the handle
On be additionally provided with several dead lock for safety slots, the dead lock for safety slot position in the regulating tank outside and communicate therewith, the adjusting
Driving lever can be sticked into the dead lock for safety slot and be fixed.
16. a kind of cryoablation needle of adjustable targeting district as claimed in claim 15, which is characterized in that the dead lock for safety slot
Including radial rotating slot and security card slot, radially in the shank, the radial rotating slot is set the radial rotating slot position
It sets the outside in the regulating tank and communicates therewith；The security card slot is located in the axial direction of the shank, the security card slot
The outside of the radial rotating slot is set and is communicated therewith；
Along circumferentially rotating in the adjusting driving lever to the radial rotating slot for the handle, the adjusting is then moved axially again
Driving lever is caught in the security card slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910751318.6A CN110478027A (en) | 2019-08-13 | 2019-08-13 | A kind of cryoablation needle of adjustable targeting district |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910751318.6A CN110478027A (en) | 2019-08-13 | 2019-08-13 | A kind of cryoablation needle of adjustable targeting district |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110478027A true CN110478027A (en) | 2019-11-22 |
Family
ID=68551082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910751318.6A Pending CN110478027A (en) | 2019-08-13 | 2019-08-13 | A kind of cryoablation needle of adjustable targeting district |
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| Country | Link |
|---|---|
| CN (1) | CN110478027A (en) |
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| CN111481286A (en) * | 2020-04-23 | 2020-08-04 | 中国人民解放军陆军特色医学中心 | Wart body freezing device |
| CN112022326A (en) * | 2020-08-18 | 2020-12-04 | 上海市第十人民医院 | Spray freezing pipe with adjustable scope of action |
| CN113397690A (en) * | 2021-06-18 | 2021-09-17 | 上海导向医疗系统有限公司 | Method and system for machining vacuum wall of ablation needle and vacuum wall of ablation needle |
| CN113842204A (en) * | 2021-11-11 | 2021-12-28 | 上海导向医疗系统有限公司 | Double J-T groove cryoablation needle |
| WO2023083047A1 (en) * | 2021-11-11 | 2023-05-19 | 上海市胸科医院 | Cryoablation needle having j-t slot sleeve |
| CN116942301A (en) * | 2023-07-26 | 2023-10-27 | 南京先欧生物科技有限公司 | Tumor ablation needle for high-voltage steep pulse |
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| CN116942301B (en) * | 2023-07-26 | 2024-05-10 | 杭州先欧生物科技有限公司 | Tumor ablation needle for high-voltage steep pulse |
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