CN101711700A - Magnetic resonance imaging (MRI) compatible needle knife - Google Patents
Magnetic resonance imaging (MRI) compatible needle knife Download PDFInfo
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- CN101711700A CN101711700A CN200810161977A CN200810161977A CN101711700A CN 101711700 A CN101711700 A CN 101711700A CN 200810161977 A CN200810161977 A CN 200810161977A CN 200810161977 A CN200810161977 A CN 200810161977A CN 101711700 A CN101711700 A CN 101711700A
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- cutter head
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Abstract
The invention provides a magnetic resonance imaging compatible needle knife, which comprises a needle knife handle, a needle knife body and a needle knife head. The needle knife body and the needle knife head are made of a paramagnetic metal material, and a layer of diamagnetic metal material coat is coated on the paramagnetic metal material. In the needle knife, because the diamagnetic metal material coat can counteract the magnetization effect of an external magnetic field on the paramagnetic metal material, the paramagnetic metal material does not cause the magnetic distortion of magnetic resonance equipment, and meanwhile does not produce artifacts in scanned images. Moreover, because the paramagnetic and diamagnetic metal materials consist of metal elements, the mechanical properties of the needle knife body and the needle knife head can be ensured so as to meet the requirement of needle knife operations.
Description
Technical field
The present invention designs a kind of medical apparatus and instruments, is specifically related to a kind of magnetic resonance imaging (MRI) compatible needle knife.
Background technology
A kind of pin cutter is disclosed in the Chinese patent 98208305.This pin cutter is organically combining the surgical operation therapy method of doctor trained in Western medicine and the acupuncture treatment method of the traditional Chinese medical science together aspect the disease in treatment, the open operation of doctor trained in Western medicine is become be closed operation.The operation of pin cutter both can reach cutting, loosen, peels off, removed the purpose of focus, need not to cut skin and linked groups again, also just avoided the generation of operating sequela and complication, can directly apply to clinical, exercisable a kind of medical skill thereby become.
But because the pin cutter this closed operation of performing the operation, the doctor can't directly see focus in the process of operation technique, thereby the operation of pin cutter needs the doctor to have abundant dissect physiology to gain knowledge and clinical experience.For auxiliary doctor carries out the operation of " visual ", thereby reduce the risk of pin cutter operation, the pin cutter modus operandi of nuclear magnetic resonance guiding (MRI guided) becomes a kind of important development trend of pin cutter medical domain.
The nuclear magnetic resonance guiding has made full use of the high-contrast of nuclear magnetic resonance favorable tissue anatomical structure resolution capability and pathological tissues and normal structure, by the fast imaging technology pin cutter operation process is carried out whole process monitoring in real time, thereby can help the doctor to understand at any time and judge the pin cutter and focus and peripheral important blood vessels thereof and neural position relation, determine the operation practical range, and then reach the purpose of real-time monitoring operative effect.
In order to implement the pin cutter operation of nuclear magnetic resonance guiding, the surgical needles cutter should have non-magnetic characteristic (non-magnetic), with the magnetic resonance equipment compatibility.But mostly traditional pin cutter is to be made by stainless steel material, and this pin cutter can cause the distortion of field of magnetic resonance equipment when the pin cutter operation that is used for the nuclear magnetic resonance guiding, influence the quality of nuclear magnetic resonance, and bring serious nuclear-magnetism safety problem.For this reason, United States Patent (USP) 6,258 has proposed a kind of nuclear magnetic resonance compatible needle knife of being made by ceramic material in 071.Though ceramic material has non-magnetic characteristic, quality is more crisp hard, and therefore the mechanical performance of the pin cutter of being made by ceramic material is unsatisfactory.In addition, United States Patent (USP) 5,730 has proposed a kind of nuclear magnetic resonance compatible needle knife of being made by 316 type stainless steel materials in 732.Though the mechanical performance of this pin cutter can meet the demands, but when being used for nuclear magnetic resonance, still can be in scanogram, especially produce serious artefact (artefact) on the position at pin cutter head place, thereby make the doctor observe well and the position of pin cutter head is judged exactly to the focus zone.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of nuclear magnetic resonance compatible needle knife, have the favorable mechanical performance on the one hand, can in scanogram, not produce artefact simultaneously.
Above-mentioned purpose of the present invention is realized by following technical scheme: a kind of nuclear magnetic resonance compatible needle knife comprises: pin handle of a knife, pin blade and pin cutter head; Wherein:
Described pin blade and pin cutter head are made by the paramagnetic metal material; And,
Be coated with one deck diamagnetism metal material coating on the described paramagnetic metal material.
According to pin cutter of the present invention, wherein, described paramagnetic metal material is platinum, magnesium, aluminum or titanium, and described diamagnetism metal material is gold, silver or bismuth.
According to pin cutter of the present invention, wherein, have a breach on the described diamagnetism metal material coating at described pin cutter head place, described pin cutter head is only made by described paramagnetic metal material in described indentation, there.
According to pin cutter of the present invention, wherein, described breach is an annular breach around described pin cutter head.
According to pin cutter of the present invention, wherein, described pin blade is a hollow tubular, and has opening at described pin handle of a knife and described pin cutter head two ends.
According to pin cutter of the present invention, wherein, described pin handle of a knife and pin blade are detachable, and described pin handle of a knife is made of plastics.
According to pin cutter of the present invention, wherein, described pin handle of a knife and pin blade are one, and described pin handle of a knife also made by described paramagnetic metal material, are coated with described antimagnetic material metal coating on the described paramagnetic metal material.
In the present invention, described pin blade and described pin cutter head are designed to double-decker, described diamagnetism metal material coating can be offset the magnetization of externally-applied magnetic field to described paramagnetic metal material, thereby described paramagnetic metal material can not produce artefact simultaneously with regard to not causing the distortion of field of magnetic resonance equipment yet in scanogram.And, because described paramagnetism and diamagnetism metal material all are to be made of metallic element, therefore can guarantee the mechanical property of described pin blade and described pin cutter head, thereby satisfy the requirement of pin cutter operation.
Description of drawings
Below with reference to accompanying drawing and by specific embodiment purpose of the present invention and feature are elaborated, these concrete enforcements are historical illustrative, do not have restricted.
Fig. 1 is the pin knife structure sketch map in the embodiment of the invention;
Fig. 2 is the cross-wise direction sketch map of pin cutter shown in Figure 1;
Fig. 3 is the A-A schematic cross-section among Fig. 2;
Fig. 4 is the B-B schematic cross-section among Fig. 2.
The specific embodiment
Nuclear magnetic resonance compatible needle knife of the present invention comprises: pin handle of a knife, pin blade and pin cutter head; Wherein, described pin blade and pin cutter head are made by paramagnetism (paramagnetism) metal material; And, be coated with one deck diamagnetism (diamagnetism) metal material coating on the described paramagnetic metal material.
In the present invention, in order to make pin cutter and nuclear magnetic resonance equipment compatibility, keep the required mechanical property of pin cutter simultaneously, described pin blade and described pin cutter head are designed to above-mentioned double-decker.Like this, when the pin cutter operation of carrying out the nuclear magnetic resonance guiding, enter the pin blade of imaging region and the described diamagnetism metal material coating on the pin cutter head and will offset the magnetization of externally-applied magnetic field described paramagnetic metal material, thereby described paramagnetic metal material can not produce artefact simultaneously with regard to not causing the distortion of field of magnetic resonance equipment yet in scanogram.And, because described paramagnetism and diamagnetism metal material all are to be made of metallic element, therefore can guarantee the mechanical property of described pin blade and described pin cutter head, thereby satisfy the requirement of pin cutter operation.
In one embodiment of the invention, as shown in Figure 1, the pin cutter is made up of pin handle of a knife 1, pin blade 2 and pin cutter head 3 three parts.Wherein, the part of pin blade 2 and pin cutter head 3 is made by paramagnetic metal material 5, and is coated with diamagnetism metal material coating 6 on the paramagnetic metal material 5.In the present embodiment, paramagnetic metal material 5 can be made of platinum, magnesium, aluminum or titanium elements, is preferably titanium, and diamagnetism metal material coating 6 can be made of gold, silver or bismuth element, is preferably the bismuth coating.
In the present embodiment, judge the position at pin cutter head 3 places in order further to help the doctor, have a breach 7 on the diamagnetism metal material coating 6 at pin cutter head 3 places, pin cutter head 3 is made by paramagnetic metal material 57 of indentation, there.Like this, by the weak magnetic that paramagnetic metal material 5 shows in externally-applied magnetic field, the position of breach 7 can be shown as a stain on scanogram, and the position doctor on scanogram just can learn pin cutter head 3 positions by this stain.As a kind of recognition method of pin cutter head 3 positions, the shape of breach 7 can be any suitable shape, as long as the stain that the position of breach 7 forms on scanogram can be differentiated by the doctor.In the present embodiment, breach 7 is preferably an annular breach around pin cutter head 3.Show pin cutter shown in Figure 1 among Fig. 2, Fig. 3 and Fig. 4 respectively at the A-A cross-wise direction of pin blade 2 parts, the B-B cross-wise direction and the corresponding schematic cross-section of pin cutter head 3 parts.
Owing in the process of pin cutter operation, need to cooperate simultaneously treatments such as sealing, laser, chemistry sometimes, therefore, pin blade 3 in the present embodiment is preferably hollow tubular, and has opening at pin handle of a knife 1 and pin cutter head 3 two ends, like this, sealing medicinal liquid, laser beam, chemical agent etc. just can be transported to affected area in the pipe by pin blade 3.
In order to save the manufacturing cost of pin cutter, because pin handle of a knife 1 can not enter imaging region in the pin cutter operation of nuclear magnetic resonance guiding, pin handle of a knife 1 can adopt and pin blade 2 dismountable structure members 4, and is made of plastics, as shown in fig. 1 simultaneously.Pin handle of a knife 1 for example can be structures such as grafting, clamping or screw socket are connected with the demountable structure of 2 of pin blades, and the concrete shape of pin handle of a knife 1 for example can be oval, water droplet shape or Pear-Shaped etc.
In addition, optionally, pin handle of a knife 1 also can be made one with pin blade 2, this hour hands handle of a knife 1 is also made by paramagnetic metal material 5, be coated with antimagnetic material metal coating 6 on the paramagnetic metal material 5, such structure can make the pin cutter that better mechanical performance is arranged, and makes the part of pin handle of a knife 1 can not be subjected to the magneticaction of externally-applied magnetic field simultaneously.
Claims (7)
1. a nuclear magnetic resonance compatible needle knife comprises: pin handle of a knife, pin blade and pin cutter head; It is characterized in that:
Described pin blade and pin cutter head are made by the paramagnetic metal material; And,
Be coated with one deck diamagnetism metal material coating on the described paramagnetic metal material.
2. pin cutter as claimed in claim 1, wherein, described paramagnetic metal material is platinum, magnesium, aluminum or titanium, described diamagnetism metal material is gold, silver or bismuth.
3. as claim 1 or 2 each described pin cuttves, wherein, have a breach on the described diamagnetism metal material coating at described pin cutter head place, described pin cutter head is only made by described paramagnetic metal material in described indentation, there.
4. pin cutter as claimed in claim 3, wherein, described breach is an annular breach around described pin cutter head.
5. as claim 1 or 2 each described pin cuttves, wherein, described pin blade is a hollow tubular, and has opening at described pin handle of a knife and described pin cutter head two ends.
6. as claim 1 or 2 each described pin cuttves, wherein, described pin handle of a knife and pin blade are detachable, and described pin handle of a knife is made of plastics.
7. as claim 1 or 2 each described pin cuttves, wherein, described pin handle of a knife and pin blade are one, and described pin handle of a knife also made by described paramagnetic metal material, are coated with described antimagnetic material metal coating on the described paramagnetic metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101619776A CN101711700B (en) | 2008-10-06 | 2008-10-06 | Magnetic resonance imaging (MRI) compatible needle knife |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101619776A CN101711700B (en) | 2008-10-06 | 2008-10-06 | Magnetic resonance imaging (MRI) compatible needle knife |
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| Publication Number | Publication Date |
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| CN101711700A true CN101711700A (en) | 2010-05-26 |
| CN101711700B CN101711700B (en) | 2012-11-14 |
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| CN2008101619776A Expired - Fee Related CN101711700B (en) | 2008-10-06 | 2008-10-06 | Magnetic resonance imaging (MRI) compatible needle knife |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102309355A (en) * | 2010-06-30 | 2012-01-11 | 西门子公司 | Acupotomy compatible with magnetic resonance elastography |
| CN107614046A (en) * | 2014-04-18 | 2018-01-19 | 贝克顿·迪金森公司 | Multipurpose blood controls safety catheter component |
| CN108430421A (en) * | 2015-10-14 | 2018-08-21 | Qfix系统有限责任公司 | Patient's manipulator of compatible MRI |
| US11737934B2 (en) | 2015-10-14 | 2023-08-29 | Qfix Systems, Llc | MRI compatible patient trolley |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5730732A (en) * | 1996-12-04 | 1998-03-24 | Ethicon, Inc. | Non-magnetic stainless steel surgical needle |
| US6306132B1 (en) * | 1999-06-17 | 2001-10-23 | Vivant Medical | Modular biopsy and microwave ablation needle delivery apparatus adapted to in situ assembly and method of use |
| US7091412B2 (en) * | 2002-03-04 | 2006-08-15 | Nanoset, Llc | Magnetically shielded assembly |
-
2008
- 2008-10-06 CN CN2008101619776A patent/CN101711700B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102309355A (en) * | 2010-06-30 | 2012-01-11 | 西门子公司 | Acupotomy compatible with magnetic resonance elastography |
| CN107614046A (en) * | 2014-04-18 | 2018-01-19 | 贝克顿·迪金森公司 | Multipurpose blood controls safety catheter component |
| CN108430421A (en) * | 2015-10-14 | 2018-08-21 | Qfix系统有限责任公司 | Patient's manipulator of compatible MRI |
| US11039758B2 (en) | 2015-10-14 | 2021-06-22 | Qfix Systems, Llc | MRI compatible patient trolley |
| US11206996B2 (en) | 2015-10-14 | 2021-12-28 | Qfix Systems, Llc | Patient trolley and patient transfer device |
| US11504022B2 (en) | 2015-10-14 | 2022-11-22 | Qfix Systems, Llc | MRI compatible patient trolley |
| US11737934B2 (en) | 2015-10-14 | 2023-08-29 | Qfix Systems, Llc | MRI compatible patient trolley |
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| CN101711700B (en) | 2012-11-14 |
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