CN106725826A - The flexible cryoprobe of enhancing cutter head security and fixed J T groove locations - Google Patents
The flexible cryoprobe of enhancing cutter head security and fixed J T groove locations Download PDFInfo
- Publication number
- CN106725826A CN106725826A CN201710019746.0A CN201710019746A CN106725826A CN 106725826 A CN106725826 A CN 106725826A CN 201710019746 A CN201710019746 A CN 201710019746A CN 106725826 A CN106725826 A CN 106725826A
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- Prior art keywords
- cutter head
- grooves
- fixed
- knife
- enhancing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00482—Digestive system
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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
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00541—Lung or bronchi
-
- 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
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00547—Prostate
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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)
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Abstract
The present invention relates to a kind of flexible cryoprobe for strengthening cutter head security and fixed J T groove locations, including cutter head, J T grooves and flexible conduit, cutter head is provided with point of a knife, and the J T grooves are fixedly connected with cutter head or point of a knife.Tensile strength of the present invention using J T grooves in itself pulls cutter head, so as to avoid the penetration damage that contingency cutter head comes off and causes, improves the security of cold therapy operation；Cold point of release is fixed on by cutter head by fixed J T groove locations simultaneously and has treated zone position, it is to avoid cutter head cold release is not enough.
Description
Technical field
It is especially a kind of to increase the present invention relates to a kind of flexible cryoprobe that through natural cavity pathological tissues are carried out with cold therapy
Strong cutter head security, cutter head is avoided to come off the flexible cryoprobe for causing human body penetration damage and ensureing cold Targeting delivery.
Background technology
Lung cancer is one of global most common malignant tumour, and it is the first that its morbidity and mortality occupies cancer.20% lung cancer is suffered from
Person cannot implement surgery excision and benefit limited in traditional chemicotherapy, and local ablation art has been answered as a kind of minimal invasive techniques
Used in the treatment of the early stage of lung cancer, cryoablation technology is gradually ripe in malignant tumour clinical practice.There is thoracic cavity because of it in lung
Special anatomical position, the tumour staight needle such as pressed close to vertical diaphragmatic surface or press close to shoulder blade cannot be punctured and carry out cold therapy in place, be one
The patient of large quantities of suitable cryoablation treatments has manufactured difficulty, other cavity tumours such as cancer of the esophagus, the carcinoma of the rectum, nasopharyngeal carcinoma, prostatitis
Gland cancer etc., it is desirable to which the cryoprobe probe for being inserted should have flexibility, and cavity is being entered to reduce cryoprobe probe as small as possible（Such as exhale
Inhale road, alveolar, esophagus etc.）Slip into naturally during to the wound that causes of tissue.Traditional cryoprobe is by metal system due to knife bar
Into, above-mentioned target is difficult to realize, typically can only be to the destructive puncture of harvesting of tissue, and the once tube wall break-through of above-mentioned cavity
Afterwards, caused result is often fatal.So, flexible cryoprobe is significant in terms of the treatment of cavity tumour.
Flexible conduit is the maximum feature and advantage of flexible cryoprobe, and modeling is generally yet with the tubing for possessing flexible characteristic
Expects pipe, and tool bit part is due to there is hardness and preferable heat transfer property requirement higher, it is necessary for metal material, therefore both
Between connect into for the key problem in terms of the Product Safety.Because the cutter head of flexible cryoprobe exists in refrigerating process
The adverse circumstances of low temperature and high pressure, no matter using which kind of interconnection technique, cannot all ensure the bonding strength being perfectly safe, once
There is the separation of cutter head and flexible conduit in operation, in the presence of gases at high pressure, the cutter head for coming off can be injected as bullet
Human body, it is likely to fatal to injury caused by the operative site personnel such as patient, doctor.Further, since J-T（Joule-
Thomson）Groove（Generally stainless steel capillary）Outlet hole site near flexible cryoprobe cold most to collect neutralization sufficient
Place, and J-T grooves flexible conduit be bent or by air-flow to pusher during, its front end outlet hole site may offset
Into cutter head back segment or flexible conduit, thus, the off-position of cold may after move, discharged so as to cause cutter head to treat section
Cold it is relatively low, it is impossible to reach the effect of targeted therapy.
The content of the invention
The present invention proposes a kind of flexibility for strengthening cutter head security and fixed J-T groove locations for the problem of flexible cryoprobe
Cryoprobe, is fixed cutter head using J-T grooves tensile strength in itself, prevents cutter head spouting injury to human body after coming off.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：One kind enhancing cutter head security and fixation
The flexible cryoprobe of J-T groove locations, including cutter head, J-T grooves, cutter head are provided with point of a knife, and the J-T grooves are fixed with cutter head or point of a knife and connected
Connect, fixed cutter head using J-T grooves, prevent cutter head spouting injury to human body after coming off.
The J-T front of the slot welds together with point of a knife, and the uniform outlet in all directions of J-T groove head segment outer walls
Hole.
The outer wall of the J-T grooves welds together with cutter head.
The J-T grooves leading portion is provided with helix tube, and blocks cutter head by helix tube.
Multiple fins vertically are welded with described J-T groove outer walls, and knife is blocked by multiple fins vertically
Head.
Helical fin is welded with described J-T groove outer walls, and cutter head is blocked by helical fin.
Multiple radial struts are welded with the outer wall of described J-T groove same positions, and by multiple radial struts
Directly block cutter head.
The beneficial effects of the invention are as follows：Even if the connection between cutter head and flexible conduit disconnects, cutter head by J-T grooves due to being drawn
Pull, spouting phenomenon will not occur, so as to improve the security of cold therapy operation.Due to J-T grooves and cutter head
Relative position is fixed, therefore, cold point of release has been limited in cutter head leading portion, it is to avoid led because outlet position offsets
The problem that the cold of cause cannot fully discharge.Additionally, J-T groove leading portions turn to helix and increase fin（Along airflow direction
And helically coiling）Method help to strengthen the heat exchange between Returning fluid and air inlet fluid, such that it is able to reach enhancing cold
Effect.
Brief description of the drawings
Fig. 1 is the structural representation that J-T front of the slot of the invention links into an integrated entity with point of a knife；
Fig. 2 is the structural representation that J-T grooves leading portion of the invention links together with cutter head inwall；
Fig. 3 is that J-T grooves leading portion of the invention turns to the structural representation that helix is stuck in cutter head front end；
Fig. 4 is that J-T grooves leading portion of the invention increases along the structural representation of airflow direction fin
Fig. 5 is left view of the J-T grooves leading portion increase of the invention along the A-A sections of airflow direction fin；
Fig. 6 is the structural representation of the fin that J-T grooves leading portion of the invention increases helically coiling
Fig. 7 is the structural representation that J-T grooves leading portion of the invention increases radially supporting bar
Fig. 8 is the left view of the B-B sections that J-T grooves leading portion of the invention increases radially supporting bar.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is expanded on further.
As shown in figure 1, the flexible cryoprobe of enhancing cutter head security of the invention and fixed J-T groove locations：Flexible cryoprobe
Two sections for before and after, leading portion is the treatment section for released cold quantity to 1 point of cutter head, and back segment is the connection for being connected with flexible conduit 3
Section, back segment is smaller than the aisle spare of leading portion.Point of a knife 2 and J-T grooves 4 link together, and J-T grooves 4 head segment it is each
Individual direction is uniformly placed with venthole 5, so as to by the limitation to point of a knife 2 serve prevent cutter head 1 spray and J-T grooves after move
Risk.The J-T grooves 4 of the program do not have front end venthole, and equally distributed venthole 5 can replace front end outlet on its tube wall,
And can play a part of to make tool temperature be more evenly distributed.
As shown in Fig. 2 the flexible cryoprobe of enhancing cutter head security of the invention and fixed J-T groove locations：J-T grooves 4 and knife
First 1 rear end inwall welds together, and the intensity of solder joint 6 efficiently avoid spouting after cutter head 1 comes off and J-T grooves
The risk moved behind position.
As shown in figure 3, the flexible cryoprobe of enhancing cutter head security of the invention and fixed J-T groove locations：J- in cutter head 1
The grade gap of T grooves 4 or zero clearance have been turned to helix, and thus pigtail can be stuck between the front and rear section of cutter head 1, should
Scheme can also strengthen the heat exchange inside cutter head 1 in addition to it can increase security and fixed J-T groove locations.
Such as Fig. 4, shown in 5, the flexible cryoprobe of enhancing cutter head security of the invention and fixed J-T groove locations：Before J-T grooves 4
Axial fin 7 is welded with section outer wall, fin 7 vertically is that the good fin of multiple heat conductivilitys is welded along airflow direction
On the outer wall of J-T grooves 4, the rear end of fin 7 is stuck between the front and rear section of cutter head 1, from figure 5 it can be seen that the fin 7 stretches out along 6 directions,
Return-air air-flow passes through between fin, after air inlet heat exchange, the temperature at cutter head 1 can be made lower.
As shown in fig. 6, the flexible cryoprobe of enhancing cutter head security of the invention and fixed J-T groove locations：The leading portion of J-T grooves 4
Outer wall is welded with helical fin 8, the fin 8 of helically coiling be by the good hand of spiral of strip fin 8 of heat conductivility around
Make and be welded on the outer wall of J-T grooves 4, the rear end of helical fin 8 can block cutter head 1, at the same return-air air-flow can the hand of spiral by should
Fin, also plays the role of enhancing cutter head 1 and exchanges heat.
Such as Fig. 7, shown in 8, the flexible cryoprobe of enhancing cutter head security of the invention and fixed J-T groove locations：Before J-T grooves 4
Section outer wall is welded with the support bar 9 of radial direction, and radially supporting bar 9 is that the bonding jumper that multiple intensity are high and diameter is small is welded on into J-
On the outer wall of the same position of T grooves 4, for blocking cutter head 1.As seen from Figure 8, support bar 9 prolongs 4 directions and stretches out, the intensity of support bar 9
It is high and thinner, it is to avoid to hinder return-air air-flow.
Embodiment one：
The rear end face drilling machine of solid point of a knife 2 is got out into a small sircle hole, the tube wall of J-T grooves 4 is got directly with the method for laser boring
Footpath and the suitable venthole of spacing, then insert J-T grooves 4 in the small sircle hole of solid point of a knife 2, the side welded with soldering or oxy-arc
Method, both are welded together, and the rear end of J-T grooves 4 then is inserted into cutter head 1, are finally connected point of a knife 2 with cutter head 1 with laser welding
Be connected together, thus cutter head 1 and J-T grooves 4 can be fixed, further, since from front end single hole outlet become tube wall it is porous go out
Gas, may be such that the more uniform temperature of the outer surface of cutter head 2, and gained ice hockey shape is fuller.
Embodiment two：
The front end of J-T grooves 4 is inserted into correct position from the rear end of cutter head 1, with the method for laser welding by the outer wall and knife of J-T grooves 4
Head rear end welds together, and to ensure bonding strength, after the completion of welding, then can be carried out soft using the method for filler Laser Welding
Property conduit 3 and cutter head 2 connection.
Embodiment three：
Take a core pipe for suitable diameter, by J-T grooves are tight or equidistant coiling core pipe on, after laying out appropriate length, will
Core pipe is taken out, and the rear end of J-T grooves 4 is inserted into cutter head 1, after being inserted into bottom, point of a knife 2 and cutter head is linked together with laser welding.
The method concise in technology, shorter mention welding step, due to increased into the heat exchange area between return-air, the low temperature of return-air can be by
Intake air temperature becomes lower, therefore its cold is bigger, it is wider to freeze scope.If the J-T grooves 4 of coiling closely connect with the inwall of cutter head 1
Touch, may also function as making cutter head outside wall temperature uniformly act on.
Example IV：
Fin or support bar are taken, it is welded on the outer surface of J-T grooves 4 with the method for Laser Welding, insertion cutter head 1 leading portion is on earth
Afterwards, point of a knife 2 is linked together with cutter head 1 with Laser Welding.To ensure that fin possesses preferable heat exchange effect, copper or aluminium are can select
Fin, support bar 9 is that proof strength may be selected stainless steel material.Wherein, the method from fin can also strengthen between return-air
Heat exchange, be conducive to increase cold.
Claims (7)
1. a kind of flexible cryoprobe for strengthening cutter head security and fixed J-T groove locations, including cutter head（1）, J-T grooves（4）And flexibility
Conduit（3）, cutter head（1）It is provided with point of a knife（2）, it is characterised in that：The J-T grooves（4）With cutter head（1）Or point of a knife（2）It is fixed to connect
Connect, fixed cutter head using J-T grooves, prevent cutter head spouting injury to human body after coming off.
2. the flexible cryoprobe of enhancing cutter head security according to claim 1 and fixed J-T groove locations, it is characterised in that：
The J-T grooves（4）Front end and point of a knife（2）Weld together, and the uniform venthole in all directions of J-T groove head segment outer walls
（5）.
3. the flexible cryoprobe of enhancing cutter head security according to claim 1 and fixed J-T groove locations, it is characterised in that：
The J-T grooves（4）Outer wall and cutter head（1）Weld together.
4. the flexible cryoprobe of enhancing cutter head security according to claim 1 and fixed J-T groove locations, it is characterised in that：
The J-T grooves（4）Leading portion is provided with helix tube, and blocks cutter head by helix tube（1）.
5. the flexible cryoprobe of enhancing cutter head security according to claim 1 and fixed J-T groove locations, it is characterised in that：
Described J-T grooves（4）Multiple fins vertically are welded with outer wall（7）, and by multiple fins vertically（7）Block knife
Head（1）.
6. the flexible cryoprobe of enhancing cutter head security according to claim 1 and fixed J-T groove locations, it is characterised in that：
Described J-T grooves（4）Helical fin is welded with outer wall（8）, and by helical fin（8）Block cutter head (1).
7. the flexible cryoprobe of enhancing cutter head security according to claim 1 and fixed J-T groove locations, it is characterised in that：
Described J-T grooves（4）Multiple radial struts are welded with the outer wall of same position（9）, and by multiple radial struts（9）
Directly block cutter head（1）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710019746.0A CN106725826A (en) | 2017-01-11 | 2017-01-11 | The flexible cryoprobe of enhancing cutter head security and fixed J T groove locations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710019746.0A CN106725826A (en) | 2017-01-11 | 2017-01-11 | The flexible cryoprobe of enhancing cutter head security and fixed J T groove locations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106725826A true CN106725826A (en) | 2017-05-31 |
Family
ID=58949267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710019746.0A Pending CN106725826A (en) | 2017-01-11 | 2017-01-11 | The flexible cryoprobe of enhancing cutter head security and fixed J T groove locations |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107714172A (en) * | 2017-11-10 | 2018-02-23 | 上海导向医疗系统有限公司 | Thermometric and the cryoablation pin of rewarming function are realized by thermocouple wire simultaneously |
| CN109567928A (en) * | 2018-11-09 | 2019-04-05 | 湖南爱芷生医疗科技有限公司 | A kind of superconduction deep-frozen cutter head system |
| WO2020155301A1 (en) * | 2019-01-28 | 2020-08-06 | 上海导向医疗系统有限公司 | Flexible cryoablation needle device resistant to low temperature and high pressure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107714172A (en) * | 2017-11-10 | 2018-02-23 | 上海导向医疗系统有限公司 | Thermometric and the cryoablation pin of rewarming function are realized by thermocouple wire simultaneously |
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Application publication date: 20170531 |