CN106963472A - The targeting knife optimized using laser surface texture - Google Patents
The targeting knife optimized using laser surface texture Download PDFInfo
- Publication number
- CN106963472A CN106963472A CN201710187928.9A CN201710187928A CN106963472A CN 106963472 A CN106963472 A CN 106963472A CN 201710187928 A CN201710187928 A CN 201710187928A CN 106963472 A CN106963472 A CN 106963472A
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- CN
- China
- Prior art keywords
- targeting
- blade
- laser
- knife
- tissue
- Prior art date
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/18—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for knives, scythes, scissors, or like hand cutting tools
-
- 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
- A61B2018/00964—Features of probes
Abstract
The present invention relates to a kind of targeting knife of utilization laser surface texture optimization, targeting blade including stainless steel, the targeting blade surface has the optimizing surface tissue by laser transformation hardening or laser remolten, blade surface is set to obtain superfine sclerotic tissue, blade surface abrasion resistance and high temperature oxidation resistance are improved, reduces the friction between blade and tissue.The present invention realizes the optimization to stainless steel watch covering weave by laser transformation hardening or laser remolten etc., without changing ingredient, and after the optimization of laser surface texture, corrosion resistance, wearability and the high temperature oxidation resistance on stainless steel blade surface are significantly improved, when blade enters human body and extracted from organ-tissue, friction between blade and tissue reduces, and therefore the edge of a knife also diminishes, so as to reduce the pain of patient.
Description
Technical field
Knife, especially a kind of targeting knife for cryosurgery are targetted the present invention relates to one kind.
Background technology
Cryosurgery is the effective means for the treatment of cancer, by development for many years, and it, which has had, more and more widely should
With.The development of cryosurgery and the progressive interwoveness of freezing therapeutic instrument.From the point of view of the developing history of freezing therapeutic instrument, it
All along pursuing, wound is smaller, performance is more perfect, developed using more easily direction always.
Targeting knife cold therapy cooling system temperature is low, and the ice hockey sharpness of border of formation, size are big, are controlled available for big tumour
Treat；Using local anaesthesia puncture for treating, operating time is short, wound is small, bleeding is few, minimally invasive with the obvious advantage；Rewarming speed is fast, it is fast to can be achieved
Speed is drawn sword；Real-time monitoring system is easy to thermometric and temperature control, operation safety in art higher；Post-operative recovery is fast, hospital stays section；Work
Make source of the gas to be conveniently easy to get, substantially reduce operation cost.However, to mitigate patient's pain, reducing wound, its disposable cryoprobe
Blade surface property it is to be improved.
Accordingly, it would be desirable to which a kind of improvement blade surface property and the technology harmless to human body performance, can make blade surface
Coefficient of friction reduce so that blade enter human body when reduce and organ between friction, mitigate patient pain, reduce create
Wound.
《Target the method for knife mixed gas feeder and control cold output》In patent, obligee proposes a kind of swollen
The method that knurl cryoablation is exported with the mixed gas feeder and control cold of targeting knife, for making the targeting district of targeting knife
It is quick to be down to after ablation temperature, the cold of control input targeting district.Exist in addition《Tumour cryoablation cryoprobe》Patent in, power
Sharp people proposes a kind of tumour cryoablation cryoprobe, for increasing the thermal conductivity factor of knife wall at targeting district, passes more colds
Enter tumor tissues, reduce the loss of backflow cold, and extracted as early as possible out of patient body beneficial to the postoperative cryoprobe of cryoablation is implemented.
Both the above patent does not all account for raising blade surface property to reduce its friction between organ, so as to mitigate patient
Pain.
The content of the invention
The present invention is to provide for a kind of targeting knife of utilization laser surface texture optimization, passes through laser transformation hardening, laser
The optimization to stainless steel watch covering weave is realized in remelting etc., without changing ingredient, and after the optimization of laser surface texture,
Corrosion resistance, wearability and the high temperature oxidation resistance on stainless steel blade surface are significantly improved, and enter human body and from organ in blade
When being extracted in tissue, the friction between blade and tissue reduces, and therefore the edge of a knife also diminishes, so as to reduce the pain of patient.
To achieve the above object, the technical scheme is that：A kind of targeting knife of utilization laser surface texture optimization, bag
The targeting blade of stainless steel is included, the targeting blade surface has the optimizing surface group by laser transformation hardening or laser remolten
Tissue layer, makes blade surface obtain superfine sclerotic tissue, improves blade surface abrasion resistance and high temperature oxidation resistance, reduce blade with
Friction between tissue, improves freezing and ablation effect, so as to reduce the edge of a knife, mitigates patient's pain.
A kind of laser transformation hardening method of the targeting knife of utilization laser surface texture optimization, the intense laser beam of rule is shone
Targeting blade surface is mapped to, targeting blade surface temperature is brought up to more than austenite transformation temperature, below fusing point rapidly, passed through
The quick movement of laser beam, targeting blade is heated position and rapidly carries out heat exchange, the cooling on targeting blade surface with internal
Speed is exceedingly fast, so as to complete martensite transfor mation, obtains superfine martensite, targeting blade surface is had high rigidity, Yi Jigao
Wearability and finish.
A kind of laser remolten method of the targeting knife of utilization laser surface texture optimization, with 10~10W/cm of power density2
Laser beam, targeting blade stainless steel watch Surface scan, the stainless steel on top layer melt, then quickly cooled and solidified, obtain solidifying
Gu when primary phase be austenite phase, crystal grain refined, and targeting blade surface is had a high rigidity, and high-wearing feature and anti-
Corrosion.
The beneficial effects of the invention are as follows：
1. pair blade stainless steel surfaces carry out laser transformation hardening, laser remolten, so that optimizing surface tissue, while not changing institute
Containing composition.
2nd, after the optimization of laser surface texture, corrosion resistance, wearability and the high temperature oxidation resistance on stainless steel blade surface
Can all it significantly improve.
3rd, blade surface abrasion resistance and corrosion resistance, the raising of high temperature oxidation resistance, the friction between blade and tissue
Reduce, freezing and ablation effect are improved to a certain extent, while reducing the edge of a knife, alleviate patient's pain.
Brief description of the drawings
The targeting knife schematic diagram that Fig. 1 optimizes for the utilization laser surface texture of the present invention；
Fig. 2 is that laser remolten targets knife specimen cross section microscopic structure.
Embodiment
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of targeting knife of utilization laser surface texture optimization, includes the targeting blade 1 of stainless steel, targets
Blade surface has the optimizing surface organized layer 2 by laser transformation hardening or laser remolten, obtains blade surface superfine
Sclerotic tissue, improves blade surface abrasion resistance and high temperature oxidation resistance, reduces the friction between blade and tissue, improves cold
Freeze and ablation effect, so as to reduce the edge of a knife, mitigate patient's pain.
Laser transformation hardening is because its power density is big, surface peening quality is high, it is small original paper to be influenceed in process, can be
Partial operation on complicated original paper, the features such as automatically controlling and be pollution-free is easily achieved, is widely used in material surface modifying neck
Domain.Laser transformation hardening is also known as laser quenching, is irradiated at the blade position for needing to harden with high-energy-density laser beam, makes this
Region steep temperature rise formation austenite, then quick cooling obtain tiny martensite and other hardenings of tissue layer, through laser transformation
The blade case hardness of cure process is high, and can obtain superfine sclerotic tissue, so wearability is improved.Simultaneously as
The speed of Laser Processing is fast, so that heat-affected zone is small, surface smoothness is high.
Laser remolten is that surface melting is not added with to any metallic element with laser beam, and can reach improves the mesh of surface texture
's.Blade surface remelting is made of laser to discharge impurity therein, stomata, compound, simultaneously because rapid cooling
Refined its crystal grain.Compared with laser-quenching technique, what laser remolten was handled is critical that material surface experienced one
Rapid melting-process of setting.Its main feature has：It is general without any alloying element, consolidation layer and material during surface melting
Matrix is natural metallurgical binding；, can be with despumation and gas, while what chilling recrystallization was obtained during laser melting
Tissue, thus have higher hardness, wearability and corrosion stability；Its crucible zone is thin, and heat effect region is small, to surface roughness and original paper
Size influence is little, it might even be possible to directly use.Because the height that laser remolten Surface heat-treatent technology can improve tool surface is hard
Degree, wearability and corrosion resistance etc., have preferable application prospect in industries such as machinery, chemical industry and medicine equipments.By laser weight
Molten rear tool surface microhardness is greatly improved, corrosion resistance, wearability and high temperature oxidation resistance are also preferable.
The specific method of laser transformation hardening：The intense laser beam of rule is irradiated to targeting knife surface, knife will be targetted rapidly
Surface temperature is brought up to more than austenite transformation temperature, below fusing point, passes through the quick movement of laser beam, and targeting knife is heated portion
Position rapidly carries out heat exchange with internal, and the cooling velocity on targeting knife surface is exceedingly fast, so as to complete martensite transfor mation, obtains superfine
Martensite.
Similarly, the specific method of laser remolten is：Use higher power density（10~10W/cm2）Laser beam, in target
To the stainless steel watch Surface scan of knife, melt the stainless steel on top layer, then quick cooled and solidified.
As shown in Fig. 2 the heating and cooling velocity due to laser remolten are very fast so that primary phase during solidification is Ovshinsky
Body phase, in the process, higher cooling velocity weaken redistributing for solute so that primary austenite mutually has little time to occur to turn
Become, so that ferrite disappears.
To sum up, laser transformation hardening, laser remolten are carried out to blade stainless steel surfaces, can be with optimizing surface tissue, together
When do not change ingredient.Blade surface abrasion resistance is reduced, and its corrosion resistance and high temperature oxidation resistance are also improved, in certain journey
Freezing and ablation effect can be improved on degree, while reducing the edge of a knife, patient's pain is alleviated.
Claims (3)
1. a kind of targeting knife of utilization laser surface texture optimization, includes the targeting blade of stainless steel, it is characterised in that：The target
There is the optimizing surface organized layer by laser transformation hardening or laser remolten to blade surface, obtain blade surface superfine
Sclerotic tissue, improves blade surface abrasion resistance and high temperature oxidation resistance, reduces the friction between blade and tissue, improves cold
Freeze and ablation effect, so as to reduce the edge of a knife, mitigate patient's pain.
2. a kind of laser transformation hardening method of the targeting knife of the utilization laser surface texture optimization described in claim 1, it is special
Levy and be：The intense laser beam of rule is irradiated to targeting blade surface, targeting blade surface temperature is brought up into austenite rapidly
More than transition temperature, below fusing point, by the quick movement of laser beam, targeting blade is heated position and rapidly carried out with inside
Heat exchange, the cooling velocity on targeting blade surface is exceedingly fast, so as to complete martensite transfor mation, obtains superfine martensite, makes targeting
Blade surface has high rigidity, and high-wearing feature and finish.
3. a kind of laser remolten method of the targeting knife of the utilization laser surface texture optimization described in claim 1, its feature exists
In：With 10~10W/cm of power density2Laser beam, targeting blade stainless steel watch Surface scan, make top layer stainless steel melt
Change, then quick cooled and solidified, primary phase when obtaining solidification is austenite phase, and crystal grain is refined, and has targeting blade surface
There are high rigidity, and high-wearing feature and corrosion stability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710187928.9A CN106963472A (en) | 2017-03-27 | 2017-03-27 | The targeting knife optimized using laser surface texture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710187928.9A CN106963472A (en) | 2017-03-27 | 2017-03-27 | The targeting knife optimized using laser surface texture |
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| Publication Number | Publication Date |
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| CN106963472A true CN106963472A (en) | 2017-07-21 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710187928.9A Pending CN106963472A (en) | 2017-03-27 | 2017-03-27 | The targeting knife optimized using laser surface texture |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108396112A (en) * | 2018-03-08 | 2018-08-14 | 南京理工大学 | A kind of high intensity steel wire cutting device short route manufacturing method |
| CN108555437A (en) * | 2018-05-09 | 2018-09-21 | 北京航空航天大学 | A kind of laser processing of orientation regulation and control biomedical metal material superficial cell growth |
| CN109458414A (en) * | 2018-12-28 | 2019-03-12 | 上海理工大学 | A kind of vibration and noise reducing brake disc |
| CN111225626A (en) * | 2017-09-05 | 2020-06-02 | 艾达吉欧医疗公司 | Ablation catheter with shape memory probe |
Citations (4)
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|---|---|---|---|---|
| CN1062003A (en) * | 1991-10-21 | 1992-06-17 | 上海工程技术大学 | The heat treatment of medium carbon steel cutter |
| CN105349735A (en) * | 2015-10-19 | 2016-02-24 | 无锡清杨机械制造有限公司 | Laser fusing technology |
| CN106319161A (en) * | 2015-06-26 | 2017-01-11 | 上海市机械制造工艺研究所有限公司 | Laser transformation hardening process for medical low-carbon martensitic stainless steel surgical instrument |
| CN106319196A (en) * | 2015-06-26 | 2017-01-11 | 上海市机械制造工艺研究所有限公司 | Temperature-controlled laser transformation hardening process for medical low-carbon martensitic stainless steel surgical instrument |
-
2017
- 2017-03-27 CN CN201710187928.9A patent/CN106963472A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1062003A (en) * | 1991-10-21 | 1992-06-17 | 上海工程技术大学 | The heat treatment of medium carbon steel cutter |
| CN106319161A (en) * | 2015-06-26 | 2017-01-11 | 上海市机械制造工艺研究所有限公司 | Laser transformation hardening process for medical low-carbon martensitic stainless steel surgical instrument |
| CN106319196A (en) * | 2015-06-26 | 2017-01-11 | 上海市机械制造工艺研究所有限公司 | Temperature-controlled laser transformation hardening process for medical low-carbon martensitic stainless steel surgical instrument |
| CN105349735A (en) * | 2015-10-19 | 2016-02-24 | 无锡清杨机械制造有限公司 | Laser fusing technology |
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| 李惠友: "国外刀具热处理技术近况（三）", 《工具技术》 * |
| 邱星武等: "激光相变硬化技术发展现状及展望", 《热处理技术与装备》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111225626A (en) * | 2017-09-05 | 2020-06-02 | 艾达吉欧医疗公司 | Ablation catheter with shape memory probe |
| CN111225626B (en) * | 2017-09-05 | 2023-11-14 | 艾达吉欧医疗公司 | Ablation catheter with shape memory probe |
| CN108396112A (en) * | 2018-03-08 | 2018-08-14 | 南京理工大学 | A kind of high intensity steel wire cutting device short route manufacturing method |
| CN108555437A (en) * | 2018-05-09 | 2018-09-21 | 北京航空航天大学 | A kind of laser processing of orientation regulation and control biomedical metal material superficial cell growth |
| CN109458414A (en) * | 2018-12-28 | 2019-03-12 | 上海理工大学 | A kind of vibration and noise reducing brake disc |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170721 |
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| RJ01 | Rejection of invention patent application after publication |