CN208942289U - A kind of medical calm - Google Patents
A kind of medical calm Download PDFInfo
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- CN208942289U CN208942289U CN201820898084.9U CN201820898084U CN208942289U CN 208942289 U CN208942289 U CN 208942289U CN 201820898084 U CN201820898084 U CN 201820898084U CN 208942289 U CN208942289 U CN 208942289U
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- jaw
- caliper
- solder
- medical calm
- weld
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Abstract
The utility model discloses a kind of medical calms, including caliper and jaw, the jaw is fixedly connected by laser spot welding with caliper, there are weld gaps with caliper joint place for the jaw, the weld gap internal coat has graphitization solder, and the jaw and caliper are bonded as one by vacuum brazing.The medical calm improves jaw selection range, not easily to fall off after welding, improves service life；Make the smooth densification of weld interface, almost without weld seam, it is firm to weld for welding；Weldering connection is more longlasting between dissimilar metal and has stronger plasticity.
Description
Technical field
The utility model relates to the field of medical instrument technology, more particularly, to a kind of medical calm.
Background technique
In surgical operation, medical calm is an essential tool, and medical calm belongs to as operational tool easily to disappear
Work consuming tool, common production method is to make caliper with low or middle carbon stainless steel, and blade portion welds the edge of a knife made of high hardness material.
But since low or middle carbon stainless steel and jaw high hardness material welding performance are very poor, that is, it is difficult to weld together, so generally
Using adhering method.But the difference of metal structure causes the two linear expansion coefficient different between dissimilar metal, bath and side
Filling metal occurs at edge to mix with the base metals of fusing, but mixes situation and has a certain difference, unmixed zone
There is decarburized layer present in toe of the weld, in dissimilar metal on one side in domain, and carburetting layer occurs in another side, influence it is welded can
Plasticity and persistence.
Chinese patent literature (day for announcing: on April 19th, 2017, notification number: CN106562809A) discloses a kind of medical
It clamps (cutting), which includes handle, pincers (cutting) head matrix and pincers (cutting) mouth, and the handle and pincers (cut) head matrix
Hardness is less than the hardness of pincers (cutting) mouth, and the pincers, which (cut) mouth and are connected to pincers, (to be cut) on head matrix, and the pincers (cut) head matrix
(cutting) the solder flux bonding that mouth junction passes through high temperature melting coated with solder flux, pincers (cutting) the head matrix and pincers (cutting) mouth with pincers is
One is whole, so that handle is hardened or is dissolved with pincers (cutting) head matrix while high-temperature soldering, and be bonded the pincers after being integral
(cutting) mouth passes through high frequency or laser or flame selective hardening.Also disclose the processing method of above-mentioned medical calm (cutting).Using this plus
Medical calm made from work method (is cut), is not only clamped (cutting) mouth hardness height, be will not fall off, and good antirust property, the service life is long, clamps (cutting) mouth
It will not black, and more convenient in selection, selection range is wide, greatly reduces manufacturing cost.
The problems such as mode that above-mentioned technical proposal uses solder flux to be bonded is to solve to fall off, black, but above-mentioned technical proposal
Carbon Migration Phenomenon can occur when not can solve different-metal material welding but.
Utility model content
The utility model aim be in order to solve in the prior art medical calm using different-metal material welding when carbon can occur move
The problems such as phenomenon is so as to cause jaw and big solder selection limitation is moved, and a kind of formation that can effectively inhibit carbide is provided,
To avoid carbon diffusion from forming diffusion layer, so that jaw selection range is wide, not easily to fall off after welding, what is improved service life is medical
Pincers.
The utility model realizes that technical solution used by its technical purpose is: a kind of medical calm, including caliper and jaw,
The jaw is fixedly connected by laser spot welding with caliper, and there are weld gaps with caliper joint place for the jaw, described
Weld gap internal coat have graphitization solder, the jaw and caliper are bonded as one by vacuum brazing.The medical calm,
By improving to jaw and caliper connection type, jaw is first fixed on to the predetermined position of caliper with laser spot welding, and
There are weld gaps for the joint place of jaw and caliper, and solder is graphitized in weld gap internal coat, then put it into true
It is brazed in empty soldering oven, jaw and vice body is made to hold together.Common solder innovation is graphitization by the medical calm
The use of solder, this graphitization solder effectively inhibits the formation of carbide, to avoid carbon diffusion from forming diffusion layer, so that different
It connects more longlasting between kind steel and there is stronger plasticity.And it is more convenient extensive in jaw and caliper selection, it saves
Cost, while jaw is not easily to fall off.
Preferably, the caliper is middle low carbon steel material members；The jaw is high-carbon steel material component.Using
Different metal production calipers and jaw had both met the requirement of jaw hardness, also met caliper using diversified material
Needs, advantageously reduce cost.
Preferably, the caliper includes binding clip and clamp handle, the binding clip and clamp handle pass through plug-in card or screw-type
It is detachably connected.Caliper is provided with binding clip and clamp handle and using being detachably connected, and such structure can be convenient root in operation
According to needing to replace different binding clips in clamp handle, the cross-species transferability of clamp handle is realized, so that the easy consumption class medical calm only needs
It replaces binding clip just and can satisfy different requirements, reduce manufacturing cost, improve versatility production.
Preferably, the clamp handle is telescopic structure, the clamp handle includes grip part and pars contractilis, and described stretches
Contracting portion is actively socketed on inside grip part, and the clamping structure by being arranged on pars contractilis and grip part positions.Clamp handle setting
For telescopic structure, the service efficiency of clamp handle can be improved with effect, can satisfy different operations and the use of different users
It is required that.
Preferably, the binding clip is detachably connected on pars contractilis.
Preferably, the clamping structure is mutually matched clamping protrusion and card slot.
Preferably, being graphitized the nano graphite powder that solder includes solder matrix and is sprayed on outside solder matrix.
The beneficial effects of the utility model are: the medical calm, improves jaw selection range, and it is not easily to fall off after welding, it mentions
High service life；Make the smooth densification of weld interface, almost without weld seam, it is firm to weld for welding；Weldering connects more between dissimilar metal
Persistently and there is stronger plasticity.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the utility model medical calm；
Fig. 2 is a kind of decomposition texture schematic diagram of the utility model medical calm；
Fig. 3 is another structural schematic diagram of the utility model medical calm；
Fig. 4 is enlarged drawing at A in Fig. 3；
Fig. 5 is a kind of structural schematic diagram that solder is graphitized in the utility model；
In figure: 1, caliper, 2, jaw, 3, weld gap, 4, graphitization solder, 5, binding clip, 6, clamp handle, 7, grip part, 8,
Pars contractilis, 9, clamping structure, 10, solder matrix, 11, nano graphite powder.
Specific embodiment
The technical solution of the utility model is described in further detail below by specific embodiment and in conjunction with attached drawing.
Embodiment 1:
In Fig. 1, embodiment shown in Fig. 2, a kind of medical calm, including caliper 1 and jaw 2, jaw 2 pass through laser spot welding
It is fixedly connected with caliper 1, there are weld gap 3,3 internal coat of weld gap has graphitization solder for jaw 2 and 1 joint place of caliper
4, jaw 2 and caliper 1 are bonded as one by vacuum brazing.Jaw 2 is curved forceps mouth.
Caliper 1 is middle low carbon steel material members；Jaw 2 is high-carbon steel material component.
Caliper 1 includes binding clip 5 and clamp handle 6, and binding clip 5 is detachably connected with clamp handle 6 by plug-in card or screw-type.This implementation
Binding clip is connect with clamp handle card insert type in example.
Clamp handle 6 is telescopic structure, and clamp handle 6 includes grip part 7 and pars contractilis 8, and pars contractilis 8 is actively socketed on grip part 7
Inside, and the clamping structure 9 by being arranged on pars contractilis 8 and grip part 7 positions；Binding clip 5 is detachably connected on pars contractilis 8
On.Grip part can be annular structure and be also possible to arcuate structure, and pars contractilis is then straightway, it can be circular configuration
It is also possible to square structure.
Graphitization solder 4 includes solder matrix 10 and the nano graphite powder 11 being sprayed on outside solder matrix 10；Nanometer stone
The mass ratio of ink powder 11 and solder matrix 10 is 0.01~0.05:1.
Be graphitized the preparation of solder 4: (1) preparation of nano-graphite dispersion liquid: in parts by weight, component includes 0.5 part
Natural graphite, 0.2 part of potassium permanganate, 1.5 parts of fuming nitric aicds, 0.45 part of oxalic acid, by above-mentioned component in 35 DEG C of progress intercalations
35 min；Obtained intercalation mixture is washed with deionized water to neutrality, and is dried at 65 DEG C, is protected under 1000 DEG C of high temperature
Expansion fossil ink powder is made in 10 min of temperature；Expansion fossil ink powder obtained and dispersing agent are sufficiently mixed and are formed uniformly a nanometer stone
Black dispersion liquid；Expanding fossil ink powder in the present embodiment and filling with dispersing agent is by constantly crushing and mixing in supersonic wave cleaning machine
It is formed uniformly nano-graphite dispersion liquid.
(2) solder is composed of the following components: Cr, B, Si, Fe, La and Ni, each component in parts by weight: 6.0 parts of Cr,
2.75 parts of B, 4.0 parts of Si, 2.5 parts of Fe, 0.1 part of La, 84.65 parts of Ni.
(3) the nano graphite powder specific surface area formed after nano-graphite dispersion liquid sprays on solder is 500 cm2/ g(is shown in
Fig. 5), the mass ratio of nano graphite powder and solder is 0.01:1.
The production method of the medical calm, comprising the following steps:
Step 1: the production of caliper and jaw makes jaw with high-carbon steel, makes caliper with middle low carbon steel and on caliper
Default jaw interconnecting piece；
Step 2: jaw is fixed on the jaw interconnecting piece on caliper by laser spot welding；And it is connect in jaw with jaw
There are weld gaps for portion joint place；
Step 3: being graphitized the preparation of solder, nano-graphite dispersion liquid is sprayed on solder matrix and forms graphitization pricker
Material；
Step 4: the graphitization solder that step 3 obtains is inserted into step 2 in the weld gap between jaw and caliper
Portion；
Step 5: the jaw and caliper for being coated with graphitization solder are put into vacuum brazing device and are brazed, by jaw and
Caliper is welded into an entirety；The temperature of vacuum brazing is 1000 DEG C, and the retention time is 10 min at vacuum degree≤10-3Pa；
Step 6: localized hyperthermia's quenching treatment being carried out to the jaw of medical calm in step 5, ultimately forms finished product medical calm.
Embodiment 2
In Fig. 3, embodiment shown in Fig. 4, a kind of medical calm, including caliper 1 and jaw 2, jaw 2 pass through laser spot welding
It is fixedly connected with caliper 1, there are weld gap 3,3 internal coat of weld gap has graphitization solder for jaw 2 and 1 joint place of caliper
4, jaw 2 and caliper 1 are bonded as one by vacuum brazing.Jaw 2 is friction clamp mouth.Caliper 1 is middle low carbon steel material members；Pincers
Mouth 2 is high-carbon steel material component.Caliper 1 includes binding clip 5 and clamp handle 6, and binding clip 5 and clamp handle 6 pass through plug-in type detachable connection.
Clamp handle 6 is telescopic structure, and clamp handle 6 includes grip part 7 and pars contractilis 8, and pars contractilis 8 is actively socketed on grip part 7
Inside, and the clamping structure 9 by being arranged on pars contractilis 8 and grip part 7 positions；Binding clip 5 is detachably connected with pars contractilis 8.
Grip part is annular structure, and pars contractilis is then straightway, is square structure.
Graphitization solder 4 includes solder matrix 10 and the nano graphite powder 11 being sprayed on outside solder matrix 10；Nanometer stone
The mass ratio of ink powder 11 and solder matrix 10 is 0.01~0.05:1.
It is graphitized the preparation of solder 4:
(1) preparation of nano-graphite dispersion liquid: in parts by weight, component includes 1.5 parts of natural graphites, 0.25 part of height
Potassium manganate, 1.9 parts of fuming nitric aicds, 0.5 part of oxalic acid, by above-mentioned component in 40 DEG C of 40 min of progress intercalation；It is inserted what is obtained
Layer reaction mixture is washed with deionized water to neutrality, and dries at 70 DEG C, keeps the temperature 15 min under 1000 DEG C of high temperature, and expansion is made
Fossil ink powder；Expansion fossil ink powder obtained and dispersing agent are sufficiently mixed and are formed uniformly nano-graphite dispersion liquid.The present embodiment
It is to form nano-graphite by constantly crushing and being uniformly mixed in supersonic wave cleaning machine that middle expansion fossil ink powder is filled with dispersing agent
Dispersion liquid.
(2) solder is composed of the following components: Cr, B, Si, Fe, La and Ni, each component in parts by weight: 8.0 parts of Cr,
3.5 parts of B, 5.0 parts of Si, 3.5 parts of Fe, 0.5 part of La, 79.5 parts of Ni.
(3) the nano graphite powder specific surface area formed after nano-graphite dispersion liquid sprays on solder is 51000cm2/ g,
The mass ratio of nano graphite powder and solder is 0.05:1.
The production method of the medical calm, comprising the following steps:
Step 1: the production of caliper and jaw makes jaw with high-carbon steel, makes caliper with middle low carbon steel and on caliper
Default jaw interconnecting piece；
Step 2: jaw is fixed on the jaw interconnecting piece on caliper by laser spot welding；And it is connect in jaw with jaw
There are weld gaps for portion joint place；
Step 3: being graphitized the preparation of solder, nano-graphite dispersion liquid is sprayed on solder matrix and forms graphitization pricker
Material；
Step 4: the graphitization solder that step 3 obtains is inserted into step 2 in the weld gap between jaw and caliper
Portion；
Step 5: the jaw and caliper for being coated with graphitization solder are put into inert gas brazing device and are brazed, and will clamp
Mouth and caliper are welded into an entirety；The temperature of inert gas soldering is 1200 DEG C, retention time 50min；
Step 6: localized hyperthermia's quenching treatment being carried out to the jaw of medical calm in step 5, ultimately forms finished product medical calm.
Embodiment 3:
Be graphitized the preparation of solder 4: (1) preparation of nano-graphite dispersion liquid: in parts by weight, component includes 0.75 part
Natural graphite, 0.225 part of potassium permanganate, 1.7 parts of fuming nitric aicds, 0.475 part of oxalic acid, by above-mentioned component in 37.5 DEG C of progress intercalations
React 37.5 min；Obtained intercalation mixture is washed with deionized water to neutrality, and is dried at 67.5 DEG C, 1000 DEG C
12.5 min are kept the temperature under high temperature, and expansion fossil ink powder is made；Expansion fossil ink powder obtained and dispersing agent are sufficiently mixed uniformly
Form nano-graphite dispersion liquid.Expanding fossil ink powder in the present embodiment and filling with dispersing agent is by continuous in supersonic wave cleaning machine
It crushes and is uniformly mixed to form nano-graphite dispersion liquid.
(2) solder is composed of the following components: Cr, B, Si, Fe, La and Ni, each component in parts by weight: 7.07 parts of Cr, 3 parts
B, 4.5 parts of Si, 3 parts of Fe, 0.3 part of La, 82 parts of Ni.
(3) the nano graphite powder specific surface area formed after nano-graphite dispersion liquid sprays on solder is 700cm2/g, is received
The mass ratio of rice graphite powder and solder is 0.03:1.
The production method of the medical calm, comprising the following steps:
Step 1: the production of caliper and jaw makes jaw with high-carbon steel, makes caliper with middle low carbon steel and on caliper
Default jaw interconnecting piece；
Step 2: jaw is fixed on the jaw interconnecting piece on caliper by laser spot welding；And it is connect in jaw with jaw
There are weld gaps for portion joint place；
Step 3: being graphitized the preparation of solder, nano-graphite dispersion liquid is sprayed on solder matrix and forms graphitization pricker
Material；
Step 4: the graphitization solder that step 3 obtains is inserted into step 2 in the weld gap between jaw and caliper
Portion；
Step 5: the jaw and caliper for being coated with graphitization solder are put into vacuum brazing device and are brazed, by jaw and
Caliper is welded into an entirety；The temperature of vacuum brazing is 1100 DEG C, in vacuum degree≤10-3The Pa lower retention time is 30min.
Step 6: localized hyperthermia's quenching treatment being carried out to the jaw of medical calm in step 5, ultimately forms finished product medical calm.
Medical calm in above-described embodiment makes jaw and caliper using dissimilar metal, and makes graphitization solder, first
Jaw is fixed on the reserved position of caliper with laser spot welding, graphitization solder is then coated on jaw and caliper weld gap
Inside, then medical calm loading vacuum or inert gas brazing device are brazed, in brazing device, temperature is increased to
When the brazing temperature value of setting, graphitization brazing filler metal melts at liquid and are filled up completely weld gap, and smelting occurs with jaw and caliper
Gold chemical reaction, during the reaction due to solder surface graphite powder presence, be with a kind of microcell in the welding process
What melting welding carried out, several microns to more than ten microns or less interfaces of both dissimilar metals of caliper and jaw carry out, and are not related to it
The structure of deep layer, so the generation of dissimilar metal surface Carbon Migration Phenomenon can be effectively inhibited, it is effective by graphitizing
Inhibit the formation of carbide, to avoid carbon diffusion from forming diffusion layer, so that connecting more longlasting between Dissimilar Steels and having more
Strong plasticity, subsequent during cooling, liquid graphitization solder makes jaw and caliper hold together realization
Welding, and the welding, almost without weld seam, it is firm to weld, and will not fall off.
By normal solder graphitization processing, effectively inhibit the formation of carbide by graphitizing, so that carbon be avoided to move
Shifting forms diffusion layer, so that weldering connection is more longlasting between different metal materials and has stronger plasticity, rare earth element activity
Height, atomic radius are big, can play the role of rotten, purification, thinning microstructure, the Ni-based pricker of powdery prepared using mechanical alloying
Material, and rare-earth elements of lanthanum is mixed, solder and base material wetability are improved, there is good wetability and seam-filling ability, welds boundary
The smooth densification in face, is well combined.
Claims (7)
1. a kind of medical calm, including caliper (1) and jaw (2), it is characterised in that: the jaw (2) by laser spot welding with
Caliper (1) is fixedly connected, and there are weld gap (3), the weld gaps (3) with caliper (1) joint place for the jaw (2)
Internal coat has graphitization solder (4), and the jaw (2) and caliper (1) are bonded as one by vacuum brazing.
2. a kind of medical calm according to claim 1, it is characterised in that: the caliper (1) is middle low carbon steel material structure
Part；The jaw (2) is high-carbon steel material component.
3. a kind of medical calm according to claim 1 or 2, it is characterised in that: the caliper includes binding clip (5) and clamp handle
(6), the binding clip (5) is detachably connected with clamp handle (6) by plug-in card or screw-type.
4. a kind of medical calm according to claim 3, it is characterised in that: the clamp handle (6) is telescopic structure, described
Clamp handle (6) include grip part (7) and pars contractilis (8), it is internal that the pars contractilis (8) is actively socketed on grip part (7), and leads to
Cross clamping structure (9) positioning being arranged on pars contractilis (8) and grip part (7).
5. a kind of medical calm according to claim 4, it is characterised in that: what the binding clip (5) was detachably connected is stretching
In contracting portion (8).
6. a kind of medical calm according to claim 4, it is characterised in that: the clamping structure (9) is mutually matched
Clamping protrusion and card slot.
7. a kind of medical calm according to claim 1 or 2, it is characterised in that: graphitization solder (4) includes solder matrix
(10) and it is sprayed on the external nano graphite powder (11) of solder matrix (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820898084.9U CN208942289U (en) | 2018-06-11 | 2018-06-11 | A kind of medical calm |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820898084.9U CN208942289U (en) | 2018-06-11 | 2018-06-11 | A kind of medical calm |
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| Publication Number | Publication Date |
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| CN208942289U true CN208942289U (en) | 2019-06-07 |
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ID=66730988
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| CN201820898084.9U Active CN208942289U (en) | 2018-06-11 | 2018-06-11 | A kind of medical calm |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108836430A (en) * | 2018-06-11 | 2018-11-20 | 浙江亚通焊材有限公司 | A kind of medical calm and preparation method thereof |
-
2018
- 2018-06-11 CN CN201820898084.9U patent/CN208942289U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108836430A (en) * | 2018-06-11 | 2018-11-20 | 浙江亚通焊材有限公司 | A kind of medical calm and preparation method thereof |
| CN108836430B (en) * | 2018-06-11 | 2020-08-21 | 浙江亚通焊材有限公司 | Medical forceps and manufacturing method thereof |
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Address after: No. 372, Jinpeng Street, Sandun Industrial Zone, Xihu District, Hangzhou, Zhejiang, 310012 Patentee after: Zhejiang Yatong New Materials Co.,Ltd. Patentee after: HANGZHOU DTC MEDICAL APPARATUS CO.,LTD. Address before: No. 372, Jinpeng Street, Sandun Industrial Zone, Xihu District, Hangzhou, Zhejiang, 310012 Patentee before: ZHEJIANG ASIA GENERAL SOLDERING & BRAZING MATERIAL Co.,Ltd. Patentee before: HANGZHOU DTC MEDICAL APPARATUS CO.,LTD. |