CN110180071A - A kind of anti-method of untwisting of medical treatment composite conduit tinsel layer - Google Patents
A kind of anti-method of untwisting of medical treatment composite conduit tinsel layer Download PDFInfo
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- CN110180071A CN110180071A CN201910471451.6A CN201910471451A CN110180071A CN 110180071 A CN110180071 A CN 110180071A CN 201910471451 A CN201910471451 A CN 201910471451A CN 110180071 A CN110180071 A CN 110180071A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0009—Making of catheters or other medical or surgical tubes
- A61M25/0012—Making of catheters or other medical or surgical tubes with embedded structures, e.g. coils, braids, meshes, strands or radiopaque coils
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- 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
- C21D1/26—Methods of annealing
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- 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
- C21D1/34—Methods of heating
- C21D1/40—Direct resistance heating
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- 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
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
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Abstract
The present invention relates to medical instruments field more particularly to a kind of anti-methods of untwisting of medical composite conduit tinsel layer.Its technical solution are as follows: a kind of anti-method of untwisting of medical treatment composite conduit tinsel layer includes the following steps: the semi-finished product of a) medical composite conduit of the production with tinsel layer；B) the obtained semi-finished product of step a) are loaded on resistance spot weld；Wherein, the positive and negative electrode contact of resistance spot weld contacts the both ends of half-turn tinsel respectively；C) pulse current is applied to half-turn tinsel；Wherein, the current value of resistance spot weld is set as 0.02KA~0.09KA.The present invention provides a kind of to carry out the anti-method untwisted to the tinsel layer of medical composite conduit under the premise of reservation tinsel original tension, solves the problems, such as that anti-untwist of existing composite conduit metal layer can not get both with tension setting value is kept.
Description
Technical field
The present invention relates to medical instruments field more particularly to a kind of anti-methods of untwisting of medical composite conduit tinsel layer.
Background technique
It is well known that general medical treatment composite conduit is in addition to two layers of macromolecule is in distal end, other positions are macromolecule-
Metal-macromolecule three-decker.With the citing of Weaving type conduit: the distalmost end of metal layer necessarily solves after cutting if do not taken fixation
Rotation causes to puncture outer layer macromolecule during subsequent thermal processing.To avoid the macromolecule internal layer of conduit from being burned, conventional fixation
Mode is to make tinsel in lap position welding with resistance spot welding or laser spot welding.The technique, which generally requires, to be prepared separately
Mesh grid, and it is taken off from supporting-core, it is covered to conduit internal layer again after weld formation.Its shortcoming is mainly reflected in two
Aspect: first, after welding metal mesh through secondary set extruded on internal layer, knitting tension depends primarily on the tightening force of set net, and initial
The tension difference being arranged on braiding apparatus is larger, and the tension between silk and silk also can difference, and then influence conduit machine
Tool performance；Second, this method need to first pluck net, then weld, rear enclosure net, complex process.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, provide one kind under the premise of reservation tinsel original tension to doctor
The tinsel layer for treating composite conduit carries out the anti-method untwisted, and solves existing composite conduit metal layer and prevents untwisting and holding
The problem of power setting value can not get both.
In order to solve the above technical problems, the invention adopts the following technical scheme:
A kind of anti-method of untwisting of medical treatment composite conduit tinsel layer, includes the following steps:
A) semi-finished product of medical composite conduit of the production with tinsel layer；
B) the obtained semi-finished product of step a) are loaded on resistance spot weld；Wherein, the positive and negative electrode touching of resistance spot weld
The two sides of head difference contact metal layer；
C) pulse current is applied to tinsel；Wherein, the current value of resistance spot weld is set as 0.02KA~0.09KA.
As a preferred solution of the present invention, it after step c), follows the steps below:
If d) tinsel layer (1) is woven mesh structure, after there is discoloration because of annealing in tinsel to be energised, rotation
The positive and negative electrode contact (2) of medical composite conduit, electric resistance electric arc welder contacts next cross section metal silk thread, carries out step c), so
Medical composite conduit is moved horizontally a pitch after all tinsels of the sectional position are handled, repeated by circulation
Step c) is handled to all tinsels in the sectional position；Mobile several pitches are so recycled to, and reach setting length；If
Tinsel layer is around spring structure, then after obvious discoloration occurs in half-turn tinsel to be energised, by medical composite conduit level
A mobile screw pitch, carries out step c)；So it is recycled to mobile several screw pitch.
As a preferred solution of the present invention, in step a), when tinsel layer is woven mesh structure, the two of semi-finished product
Fixation has been tightened in the mesh grid at end；
When tinsel layer is around spring structure, by the both ends adhesive bonding of tinsel in fixed medical composite guide
On the macromolecule internal layer of pipe.
As a preferred solution of the present invention, in step c), the number of pulses of electric current is greater than twice.
As a preferred solution of the present invention, in step c), the current value of electric resistance electric arc welder is set as 0.06KA.
Compared with prior art, the beneficial effects of the present invention are:
1, the semi-finished product after braided metal strand layer of the present invention directly carry out point-to-point energization, electrocaloric effect are generated, to reach
It anneals and is formed to portion, inhibit to untwist.Tinsel is contacted using high frequency pulse dc electricity and is powered, it can be directly in high score
Silk thread is fixed on sub- internal layer, net and set net process are plucked in cancellation, are guaranteed the original knitting tension of tinsel, are simplified processing
Technique improves production efficiency.Using high-frequency pulse current primarily to tinsel is allowed to have intermittent annealing, heat heap is prevented
Product scald internal layer.Since conduction time is shorter, and by a certain section of galvanization to tinsel, the shortage of heat generated
Internal layer is damaged with macromolecule, also accordingly avoided taking off on tinsel layer operation and make tension change, troublesome in poeration
Situation.
Current value is set as 0.02KA~0.09KA, and the size of electric current and the sectional area of tinsel are positively correlated.When
The sectional area of tinsel is larger, and internal layer is thicker or heat resistance is strong, then is used for relatively large electric current；Work as tinsel
Sectional area it is smaller, and internal layer is relatively thin or poor heat resistance, then is used for relatively small electric current.
2, this method is applicable in woven mesh structure and around the tinsel layer of spring structure, need to only be leaned on medical composite conduit
The tinsel of several screw pitch of nearly remote location equably carries out energization annealing, easy to operate.
3, after completing weaving operation, the both ends of metal net can be screwed to be fastened braiding apparatus, reaches preliminary fixation
Effect.And when tinsel layer is around spring structure, it needs the both ends adhesive bonding of tinsel in fixed medical treatment
It is tentatively fixed to have the function that on the macromolecule internal layer of composite conduit, it avoids tinsel from loosening, subsequent energization is facilitated to anneal
Operation.
4, the pulse number of electric current is greater than twice, depending on guaranteeing that the tinsel of energized part can thoroughly be annealed
Type guarantees that tinsel has original tension, and by pulse interval, internal layer is enable to cool down.
5, when the current value of electric resistance electric arc welder being set as 0.06KA, regular size tinsel can be made to reach energization and moved back
The purpose of fire sizing effectively inhibits to untwist, and is avoided that the heat loss macromolecule internal layer generated when silk thread annealing.
Detailed description of the invention
Fig. 1 is schematic diagram when operating to the tinsel layer of woven mesh structure；
Fig. 2 is schematic diagram when operating to the tinsel layer around spring structure；
Fig. 3 is the structural schematic diagram when tinsel layer of woven mesh structure is self-locking；
Fig. 4 is the structural schematic diagram around spring structure when tentatively fixed.
In figure, 1- tinsel layer, 2- positive and negative electrode contact, 3- macromolecule internal layer.
Specific embodiment
With reference to the accompanying drawing, the present invention is described in detail.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
Implementation process
Firstly, the braided metal strand layer on the macromolecule internal layer of medical composite conduit, tinsel layer 1 is mesh grid knot
When structure or around spring structure.The end of the tinsel layer of woven mesh structure is naturally locked, realizes the preliminary solid of tinsel end
It is fixed；It will be bonded in around the end of the tinsel of spring structure on the macromolecule internal layer 3 for fixing medical composite conduit with adhesive, from
And preliminary fix is realized in the end of tinsel.
Semi-finished product are loaded on resistance spot weld again, the positive and negative electrode contact 2 of resistance spot weld contacts a Duan Jin respectively
Belong to the both ends of silk thread.Pulse current applied to this section of tinsel, the current value of resistance spot weld be set as 0.02KA~
The number of pulses of 0.09KA, electric current are greater than twice.
Positive and negative electrode need to only guarantee certain effective distance, and effectively contact in silk thread and establish access, especially needle
To the higher conduit of metal coverage rate, electrode is likely to contact more one metal wire lines, but has no effect on the reality of this patent content
It applies.
0.02KA~0.09KA is only reference value, rather than limit this patent use scope, generally, the size of electric current with
The sectional area of tinsel is positively correlated.When the sectional area of tinsel is larger, and internal layer is thicker or heat resistance is strong, then makes to it
With relatively large electric current；When the sectional area of tinsel is smaller, and internal layer is relatively thin or poor heat resistance, then is used for relatively
Small electric current.
The realization of multiple pulses electric current can be by artificially repeatedly applying electric current or being set by device program multiple
Apply electric current, its object is to the heat production that is repeatedly powered, and tinsel to be made to reach optimal annealed condition, and effectively avoid heat heap
Product damages macromolecule internal layer.
If tinsel layer 1 is woven mesh structure, the positive and negative electrode contact 2 of resistance spot weld contacts lower one metal wire layer
Line, then pulse current is passed through to it.After there is discoloration because of annealing in tinsel to be energised, rotary hospital composite conduit, so
Circulation, until all layers of tinsel of the position are processed.Medical composite conduit is moved horizontally into a pitch again, is repeated
Aforesaid operations to all layers of position tinsel is handled.Mobile several pitches are so recycled to, then the end of tinsel layer
The tinsel of several length in portion is annealed sizing, so that tinsel layer is able to maintain original knitting tension.
If tinsel layer 1 is around spring structure, half-turn tinsel to be energised occurs after obviously changing colour, will be medical
Composite conduit moves horizontally a screw pitch, then is passed through pulse current.So it is recycled to mobile several screw pitch, the end of tinsel layer
The tinsel of the one fixed width in portion is soldered annealing.
Embodiment one
A kind of anti-method of untwisting of medical treatment composite conduit tinsel layer, includes the following steps:
A) semi-finished product of medical composite conduit of the production with tinsel layer 1；When tinsel layer 1 is woven mesh structure
When, the mesh grid at the both ends of semi-finished product is mutually locked；When tinsel layer 1 be single line around spring structure when, by the two of tinsel
End adhesive bonding is on the macromolecule internal layer 3 of fixed medical composite conduit；
B) the obtained semi-finished product of step a) are loaded on resistance spot weld；Wherein, the positive and negative electrode touching of resistance spot weld
First 2 contact the both ends of half-turn tinsel respectively；
C) pulse current is applied to half-turn tinsel；Wherein, the current value of resistance spot weld is set as 0.06KA, electric current
Number of pulses be greater than twice；
If d) tinsel layer 1 is woven mesh structure, after there is discoloration because of the annealing that is powered in tinsel to be energised, rotation
Turn medical composite conduit, the positive and negative electrode contact 2 of resistance spot weld contacts next layer of tinsel, carries out step c), so follows
Medical composite conduit is moved horizontally a pitch after all layers of tinsel of the position are handled, repeats step by ring
C) it is handled to all layers of position tinsel；So it is recycled to mobile several pitches；
If tinsel layer 1 is around spring structure, half-turn tinsel to be energised occurs after obviously changing colour, will be medical multiple
It closes conduit and moves horizontally a screw pitch, carry out step c)；So it is recycled to mobile several screw pitch.
In the present invention, point-to-point energization is directly carried out to semi-finished metal strand layer 1, electrocaloric effect is generated, to reach portion
Divide annealing sizing, inhibits to untwist.Tinsel is contacted using high frequency pulse dc electricity and is powered, it can be directly on macromolecule internal layer
Silk thread is fixed, net and set net process are plucked in cancellation, are guaranteed the original knitting tension of tinsel, are simplified processing technology, mention
High efficiency.Using high-frequency pulse current primarily to tinsel is allowed to have intermittent annealing, prevent heat build-up from scalding
Internal layer.Since pulse current value is 0.06KA, it is the optimal value of this patent, applies in general to the conduit silk thread of 3F to 8F, be applicable in
Range is wider.Since conduction time is shorter, and by point-to-point one section of galvanization to tinsel, then electric current will not be to the rule
The macromolecule internal layer 3 of lattice range causes to damage, and also accordingly avoided needing to take off on tinsel layer operation and making tension
Change, situation troublesome in poeration.
This method is applicable in woven mesh structure and around the tinsel layer of spring structure, only need to be close by medical composite conduit
The tinsel of several screw pitch of remote location equably carries out energization annealing, easy to operate.
When the current value of resistance spot weld is set as 0.06KA, that is, it can reach the energization annealing sizing to tinsel
Purpose effectively inhibits to untwist, and is avoided that the heat loss macromolecule internal layer generated when silk thread annealing.
After the tinsel layer 1 of woven woven mesh structure, the end of wire gauze is mutually locked, reaches preliminary solid
Fixed effect.And when tinsel layer 1 is around spring structure, it needs to cure the both ends adhesive bonding of tinsel fixed
It is tentatively fixed to have the function that on the macromolecule internal layer 3 for treating composite conduit, it avoids tinsel from loosening, facilitates subsequent energization
Annealing operation.
The number of pulses of electric current is greater than twice, to guarantee that the tinsel of energized part can thoroughly be annealed and is formed,
Guarantee that tinsel has original knitting tension.
Embodiment two
A kind of anti-method of untwisting of medical treatment composite conduit tinsel layer, includes the following steps:
A) semi-finished product of medical composite conduit of the production with tinsel layer 1；When tinsel layer 1 is woven mesh structure
When, the mesh grid at the both ends of semi-finished product is mutually locked；When tinsel layer 1 is around spring structure, the both ends of tinsel are used
Adhesive bonding is on the macromolecule internal layer 3 of fixed medical composite conduit；
B) the obtained semi-finished product of step a) are loaded on resistance spot weld；Wherein, the positive and negative electrode touching of resistance spot weld
First 2 contact the both ends of half-turn tinsel respectively；
C) current pulse is carried out to half-turn tinsel；Wherein, the current value of resistance spot weld is set as 0.02KA, electricity
The number of pulses of stream is greater than twice；
If d) tinsel layer 1 is woven mesh structure, after there is obvious discoloration in half-turn tinsel to be energised, rotation
Medical composite conduit, the positive and negative electrode contact 2 of resistance spot weld contact next layer of tinsel, carry out step c), so recycle,
Medical composite conduit is moved horizontally into a pitch after all layers of tinsel of the position are handled, repeats step c) extremely
All layers of position tinsel is handled；So it is recycled to mobile several pitches；
If tinsel layer 1 is around spring structure, half-turn tinsel to be energised occurs after obviously changing colour, will be medical multiple
It closes conduit and moves horizontally a screw pitch, carry out step c)；So it is recycled to mobile several screw pitch.
In the present invention, point-to-point energization is directly carried out to semi-finished metal strand layer 1, electrocaloric effect is generated, to reach portion
Divide annealing sizing, inhibits to untwist.Tinsel is contacted using high frequency pulse dc electricity and is powered, guarantees the original volume of tinsel
Tension is knitted, cancellation plucks net and set net process, simplifies processing technology, improve production efficiency.Mainly it is using high-frequency pulse current
It allows the tinsel to have intermittent annealing, prevents heat build-up from scalding internal layer.It is this patent since pulse current value is 0.02KA
Smaller value, apply in general to 3F conduit silk thread below.It is and by point-to-point one section of galvanization to tinsel, then electric
Stream will not the macromolecule internal layer 3 to the specification limit cause to damage, also accordingly avoided needing to take off on tinsel layer 1
It operates and makes tension change, situation troublesome in poeration.
This method is applicable in woven mesh structure and around the tinsel layer 1 of spring structure, need to only be leaned on medical composite conduit
The wire line end of several screw pitch of close end carries out energization annealing, easy to operate.For the metal of woven mesh structure
All layers of tinsel need to be carried out energization annealing by strand layer 1, when welding, guaranteed that metal strand layer 1 is formed because of annealing, protected
Tension when demonstrate,proving it with original braiding.
After the tinsel layer 1 of woven woven mesh structure, the end of wire gauze is mutually locked, reaches preliminary solid
Fixed effect.And when tinsel layer 1 is around spring structure, it needs to cure the both ends adhesive bonding of tinsel fixed
It is tentatively fixed to have the function that on the macromolecule internal layer 3 for treating composite conduit, it avoids tinsel from loosening, facilitates subsequent energization
Annealing operation.
The number of pulses of electric current is greater than twice, to guarantee that the tinsel of energized part can thoroughly be annealed and is formed,
Guarantee that tinsel has original tension.
Embodiment three
A kind of anti-method of untwisting of medical treatment composite conduit tinsel layer, includes the following steps:
A) semi-finished product of medical composite conduit of the production with tinsel layer 1；When tinsel layer 1 is woven mesh structure
When, the mesh grid at the both ends of semi-finished product is mutually locked；When tinsel layer 1 is around spring structure, the both ends of tinsel are used
Adhesive bonding is on the macromolecule internal layer 3 of fixed medical composite conduit；
B) the obtained semi-finished product of step a) are loaded on resistance spot weld；Wherein, the positive and negative electrode touching of resistance spot weld
First 2 contact the both ends of half-turn tinsel respectively；
C) current pulse is carried out to half-turn tinsel；Wherein, the current value of resistance spot weld is set as 0.09KA, electricity
The number of pulses of stream is greater than twice；
If d) tinsel layer 1 is woven mesh structure, after there is discoloration because of annealing in tinsel to be energised, rotation doctor
Composite conduit is treated, the positive and negative electrode contact 2 of resistance spot weld contacts next layer of tinsel, carries out step c), so recycles, directly
To the position all layers of tinsel handle after medical composite conduit moved horizontally into a pitch, repeat step c) to should
All layers of position tinsel is handled；So it is recycled to mobile several pitches；
If tinsel layer 1 is around spring structure, half-turn tinsel to be energised occurs after obviously changing colour, will be medical multiple
It closes conduit and moves horizontally a screw pitch, carry out step c)；So it is recycled to mobile several screw pitch.
In the present invention, point-to-point energization is directly carried out to semi-finished metal strand layer 1, electrocaloric effect is generated, to reach portion
Divide annealing sizing, inhibits to untwist.Tinsel is contacted using high frequency pulse dc electricity and is powered, guarantees the original volume of tinsel
Tension is knitted, cancellation plucks net and set net process, simplifies processing technology, improve production efficiency.Mainly it is using high-frequency pulse current
It allows the tinsel to have intermittent annealing, prevents heat build-up from scalding internal layer.It is this patent since pulse current value is 0.09KA
The larger value, apply in general to the conduit silk thread of 9F or more.And by point-to-point one section of galvanization to tinsel, then electric current
Will not the macromolecule internal layer 3 to the specification limit cause to damage, avoid macromolecule internal layer 3 because annealing change mechanical performance feelings
Condition also accordingly avoided needing to take off on tinsel layer 1 operation and making tension change, situation troublesome in poeration.
This method is applicable in woven mesh structure and around the tinsel layer 1 of spring structure, need to only be leaned on medical composite conduit
The wire line end of several screw pitch of close end carries out energization annealing, easy to operate.For the metal of woven mesh structure
All layers of tinsel need to be carried out energization annealing by strand layer 1, when welding, guaranteed that metal strand layer 1 is formed because of annealing, protected
Tension when demonstrate,proving it with original braiding.
After the tinsel layer 1 of woven woven mesh structure, the end of wire gauze is mutually locked, reaches preliminary solid
Fixed effect.And when tinsel layer 1 is around spring structure, it needs to cure the both ends adhesive bonding of tinsel fixed
It is tentatively fixed to have the function that on the macromolecule internal layer 3 for treating composite conduit, it avoids tinsel from loosening, facilitates subsequent energization
Annealing operation.
The number of pulses of electric current is greater than twice, to guarantee that the tinsel of energized part can thoroughly be annealed and is formed,
Guarantee that tinsel has original tension.
Claims (5)
1. a kind of anti-method of untwisting of medical treatment composite conduit tinsel layer, which comprises the steps of:
A) semi-finished product of medical composite conduit of the production with tinsel layer (1)；
B) the obtained semi-finished product of step a) are loaded on resistance spot weld；Wherein, the positive and negative electrode contact (2) of resistance spot weld
One section of both ends of contact metal layer respectively；
C) pulse current is applied to tinsel；Wherein, the current value of resistance spot weld is set as 0.02KA~0.09KA.
2. a kind of medical anti-method of untwisting of composite conduit tinsel layer according to claim 1, which is characterized in that in step
It is rapid c) after, follow the steps below:
If d) tinsel layer (1) is woven mesh structure, after there is discoloration because of annealing in tinsel to be energised, rotary hospital
The positive and negative electrode contact (2) of composite conduit, electric resistance electric arc welder contacts next layer of tinsel, carries out step c), so recycles, directly
To the sectional position all tinsels handle after medical composite conduit moved horizontally into a pitch, repeat step c) extremely
All tinsels in the sectional position are handled；Mobile several pitches are so recycled to, and reach setting length；
If tinsel layer (1) is around spring structure, after obvious discoloration occurs in tinsel to be energised, by medical composite conduit
A screw pitch is moved horizontally, step c) is carried out；Mobile several screw pitch are so recycled to, and reach setting length.
3. a kind of medical anti-method of untwisting of composite conduit tinsel layer according to claim 1, which is characterized in that in step
It is rapid a) in, when tinsel layer (1) be woven mesh structure when, fixation has been tightened in the mesh grid at the both ends of semi-finished product；
When tinsel layer (1) be single line around spring structure when, the both ends adhesive bonding of tinsel is multiple in fixed medical treatment
On the macromolecule internal layer (3) for closing conduit.
4. a kind of medical anti-method of untwisting of composite conduit tinsel layer according to claim 1, which is characterized in that in step
It is rapid c) in, the number of pulses of electric current is not less than twice.
5. a kind of anti-method of untwisting of medical treatment composite conduit tinsel layer described in any one according to claim 1~4, special
Sign is, in step c), the electric current preferred value of resistance spot weld is set as 0.06KA.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810661797 | 2018-06-25 | ||
| CN2018106617978 | 2018-06-25 |
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| CN110180071A true CN110180071A (en) | 2019-08-30 |
| CN110180071B CN110180071B (en) | 2021-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910471451.6A Active CN110180071B (en) | 2018-06-25 | 2019-05-31 | Medical composite catheter metal wire layer anti-untwisting method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102068760A (en) * | 2011-01-28 | 2011-05-25 | 北京品驰医疗设备有限公司 | Implantable biological electrode and manufacturing method thereof |
| CN205586340U (en) * | 2016-02-22 | 2016-09-21 | 中国医科大学附属盛京医院 | Medical catheter of metal mesh grid adds in pipe wall |
| US20170020501A1 (en) * | 2011-07-15 | 2017-01-26 | Cook Medical Technologies Llc | Introducer sheath with braided filament securement mechanism |
-
2019
- 2019-05-31 CN CN201910471451.6A patent/CN110180071B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102068760A (en) * | 2011-01-28 | 2011-05-25 | 北京品驰医疗设备有限公司 | Implantable biological electrode and manufacturing method thereof |
| US20170020501A1 (en) * | 2011-07-15 | 2017-01-26 | Cook Medical Technologies Llc | Introducer sheath with braided filament securement mechanism |
| CN205586340U (en) * | 2016-02-22 | 2016-09-21 | 中国医科大学附属盛京医院 | Medical catheter of metal mesh grid adds in pipe wall |
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| CN110180071B (en) | 2021-05-04 |
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