CN104546245A - Medical stent, medical stent extractor and medical stent extracting method - Google Patents
Medical stent, medical stent extractor and medical stent extracting method Download PDFInfo
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- CN104546245A CN104546245A CN201510000788.0A CN201510000788A CN104546245A CN 104546245 A CN104546245 A CN 104546245A CN 201510000788 A CN201510000788 A CN 201510000788A CN 104546245 A CN104546245 A CN 104546245A
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Abstract
The invention provides a medical stent, a medical stent extractor and a medical stent extracting method. The medical stent comprises a stent body and a plurality of magnetic sheets adhered on the inner wall of the stent body, and the stent body can shrink through the magnetic sheets under attraction of a magnet. The medical stent extractor comprises a balloon, an inner pipe, a magnet and a magnet controller, the balloon is of a double-layer structure comprising an outer sleeve layer and an inner sleeve layer, the balloon comprises a balloon head, a balloon neck and a balloon opening, an annular cavity between the inner sleeve layer and the outer sleeve layer of the balloon can be filled with gas, liquid or bubbly media through the balloon opening, so that the balloon head is expanded, the inner pipe penetrates the inner cavity of the inner sleeve layer of the balloon, the magnet is arranged on the inner pipe and corresponds to the balloon head, and the magnet controller supplies power for the magnet through a lead connected in the inner pipe in a penetrating manner. Compared with the prior art, the medical stent extracting method is more convenient and reliable, a pipe wall cannot be stimulated or damaged, and time and labor are saved.
Description
Technical field
The present invention relates to a kind of Medical rack, specifically a kind of Medical rack, Medical rack extractor and removing method.
Background technology
Along with the development of society, the healthy problem having become people and be day by day concerned about, in the face of the threat that tube chamber disease is brought, Medical rack becomes indispensable device, serves vital effect.In tube chamber treatment of diseases, generally by not with or with retracting device, the Medical rack be made up of rustless steel or Nitinol etc. implants intraluminal diseased region by original body internal channel, thus effectively treatment is narrow, and releasing is blocked, shutoff fistula mouth, improves patients ' life quality.
Laying of Medical rack is implemented under endoscope or X-ray machine help with removal surgery, and there are the following problems when taking out for Medical rack: the Medical rack not with retracting device generally can not directly take out; For the Medical rack of tremulous pulse not with retracting device, take out if want, then need, by operating mode, to open otch at patient body-surface, operation is taken out; For the esophagus Medical rack not with retracting device falling into stomach, then need under the help of endoscope, utilize shearing apparatus little by little to be shredded by support, recycle biopsy forceps slices afterwards to take out, this not only adds the misery of patient, and increase the working strength of doctor.Medical rack with retracting device is generally arrange ring-type silk thread at pedestal upper end, adopting Medical rack to take out instrument (hook) during taking-up is inserted into above Medical rack, find and catch on the ring-type silk thread of pedestal upper end, then drawing outside human body, realize support to take out.This by hooking the method that the Medical rack with retracting device takes out by mode of getting in tube chamber, not only hook when getting and need repeatedly to make repeated attempts, waste time and energy; And, inevitably stimulate duct wall in the process of pull-out support, damage is to a certain degree caused to duct wall.
Summary of the invention
An object of the present invention is just to provide a kind of Medical rack, easily causes damage to duct wall with the Medical rack solving existing band retracting device and takes out the problem of complicated operation when taking out.
Two of object of the present invention is just to provide a kind of Medical rack extractor, and when adopting existing Medical rack taking-up instrument taking-up Medical rack to solve, operating process is wasted time and energy and easily duct wall caused to the problem of damage.
Three of object of the present invention is just to provide a kind of Medical rack removing method, wastes time and energy to solve the existing method adopting the hook mode of getting to take out Medical rack and easily duct wall is caused to the problem of damage.
An object of the present invention is achieved in that a kind of Medical rack, comprises overall overlay film and with the rack body of inner chamber, described rack body comprises the cylindric body at middle part and the bulge body at two ends; The inwall of described rack body is attached with some magnetic lamellar bodies, and described magnetic lamellar body can make described rack body shrink under the attraction of magnet.
Described magnetic lamellar body is attached on the inwall of described rack body equably by bonding or welding manner.
Two of object of the present invention is achieved in that a kind of Medical rack extractor, comprises sacculus, interior pipe, electric magnet and electromagnet controller; Described sacculus is the double-decker be made up of jacket layer and interior jacket layer; Described sacculus comprises sacculus head, sacculus neck and sacculus mouth, can to injecting gas, liquid or vesicle medium in the toroidal cavity between the described interior jacket layer of described sacculus and described jacket layer by described sacculus mouth, the medium injected can make described sacculus head expand after arriving described sacculus head by described sacculus neck; Described interior pipe is through the inner chamber of jacket layer interior described in described sacculus, and described electric magnet is arranged on the position that described in described interior Guan Shangyu, sacculus head is corresponding; In described interior pipe, cross-under has wire, and described electromagnet controller to be powered for described electric magnet by described wire and the intensity in the magnetic field that regulates described electric magnet to produce.
Described electric magnet comprises core body to be magnetized and is wrapped in the coil on described core body to be magnetized, and described coil is electrically connected with the wire of cross-under in described interior pipe.
Described core body to be magnetized formed by single independently iron staff or by some iron hoops with gap.
Described Medical rack extractor also comprises the outer tube be socketed in outside described sacculus neck.
The length of described sacculus head is suitable with the length of Medical rack to be got.
Three of object of the present invention is achieved in that a kind of Medical rack removing method, and the Medical rack extractor adopted is the present invention's Medical rack extractor described above, and Medical rack to be got is the present invention's Medical rack described above;
Described Medical rack removing method comprises the steps:
A, x line machine or endoscope auxiliary under, the sacculus head of Medical rack extractor is put into Medical rack place to be got through body internal channel, and makes sacculus head stretch into the inner chamber of Medical rack;
B, by sacculus mouth to injecting gas, liquid or vesicle medium in the toroidal cavity between the jacket layer and interior jacket layer of sacculus, expand to make sacculus head until sacculus head is full of the inner chamber of Medical rack;
C, by electromagnet controller to being positioned at sacculus jacket layer inner chamber and the electric magnet corresponding with sacculus head is energized;
D, to be controlled the intensity in magnetic field that electric magnet produces under electrical condition by electromagnet controller, and the intensity in the magnetic field that electric magnet is produced strengthens gradually;
Moved from static becoming towards described electric magnet direction in the process that magnetic lamellar body on e, Medical rack inwall strengthens gradually in the intensity in the magnetic field that electric magnet produces, wait be observed visually Medical rack shrink or sacculus head is compressed time, control the intensity in magnetic field that electric magnet produces constant;
F, outwards taken out the medium injected in step b by sacculus mouth, the draw speed of control medium, can shrink equably under making the drive of Medical rack within it wall magnetic lamellar body;
G, after Medical rack shrinks completely, the sacculus of Medical rack extractor and the Medical rack be adsorbed on sacculus head together to be taken out in body.
The medium injected in step b is contrast agent.
In step g after Medical rack shrinks completely, and before Medical rack is removed, also comprise the steps:
The outer tube that is socketed in outside sacculus neck is promoted to sacculus head direction, or keeps outer tube motionless, sacculus head is drawn in outer tube, to make sacculus head and the Medical rack be adsorbed on sacculus head together enters in outer tube.
Medical rack provided by the present invention and Medical rack extractor are novel product, and both are matching used.Medical rack comprises rack body with inner chamber and some magnetic lamellar bodies of being attached on rack body inwall, and magnetic lamellar body can make rack body shrink under the attraction in magnetic field.Medical rack extractor comprises sacculus, interior pipe, electric magnet and electromagnet controller.Medical rack removing method is specially: x line machine or endoscope auxiliary under, the sacculus head of Medical rack extractor is put into Medical rack place to be got through body internal channel, and make sacculus head stretch into the inner chamber of Medical rack, that is: make sacculus head and Medical rack coincide; In the toroidal cavity between the jacket layer and interior jacket layer of sacculus, inject liquid, gas or vesicle medium (such as contrast agent) by sacculus mouth afterwards, expand to make sacculus head until sacculus head is full of the inner chamber of Medical rack; Now be energized to electric magnet by electromagnet controller, and strengthened gradually by the intensity controlling the magnetic field making electric magnet produce, the intensity in the magnetic field that electric magnet produces is being strengthened and after acquiring a certain degree gradually, magnetic field can attract the magnetic lamellar body on the rack body inwall of Medical rack, and magnetic lamellar body can drive rack body to shrink after the captivation effect being subject to magnetic field; (when also observing the increase of sacculus head internal pressure by compression pump upward pressure is apparent) after the rack body generation slight shrinkage phenomenon that sacculus head is slightly compressed in other words can be seen until naked eyes, the intensity in the magnetic field now keeping electric magnet to produce is constant, and slowly outwards take out noted medium by sacculus mouth, the draw speed of control medium and magnetic field intensity keep balancing, and at the uniform velocity, equably shrink to enable rack body; After rack body shrinks completely, the sacculus of extractor and Medical rack are together taken out in body.
Medical rack removing method provided by the present invention, x line machine or endoscope auxiliary under, the intensity in the magnetic field produced by the injection/extraction and electric magnet that control liquid, gas or vesicle medium, rely on the captivation of magnet that Medical rack is shunk, and the Medical rack after shrinking together is taken out together with Medical rack extractor, this removing method is more convenient, reliable, time saving and energy saving compared to existing technology; Support is occurred to be shifted and departs from the situation of origin-location, also effectively can take out support.And, the present invention is in the process of taking out Medical rack, because rack body shrinks under the drive of magnetic lamellar body, rack body after contraction is without the power of longitudinal (being namely parallel to rack body direction), thus make Medical rack in taking-up process to stimulate duct wall, damage can not be caused to duct wall.
Accompanying drawing explanation
Fig. 1 is the structural representation of Medical rack in the present invention.
Fig. 2 is the structural representation of Medical rack extractor in the present invention.
Fig. 3 is another structural representation of electric magnet in Medical rack extractor of the present invention.
Fig. 4 is the schematic flow sheet of Medical rack removing method of the present invention.
Detailed description of the invention
As shown in Figure 1, Medical rack provided by the present invention comprises rack body 1 and is attached to the some magnetic lamellar bodies 2 on rack body 1 inwall.
Rack body 1 is in the network structure with inner chamber, and its material can be Nitinol or rustless steel, and its network structure can be formed by laser engraving or braiding.The overall overlay film of rack body 1, the film covered can be the macromolecular material that polyester, politef, polyurethane, medical silica-gel etc. have good biocompatibility.Rack body 1 specifically comprises the cylindric body 1-1 at middle part and the bulge body 1-2 at two ends, and the small-caliber end of bulge body 1-2 connects with cylindric body 1-1, and the heavy caliber end of bulge body 1-2 outwardly.The shape of bulge body 1-2 can be bell mouth shape, rim of a cup shape or bulb shape etc., and it both can fixed support effectively, prevented support landing; The stimulation of support to duct wall can be reduced again, avoid granulation tissue hyperplasia or cause pipe perforation.
Magnetic lamellar body 2 can be circular, square, oval or other special shapes etc., is circular configuration shown in figure.Magnetic lamellar body 2 can by bond or the mode such as welding is attached on the inwall of rack body 1, and its material can be rustless steel.Magnetic lamellar body 2 not carrying magnetic itself, but it can be attracted by magnet (produce magnetic field), and under the magnetic force sucking action of magnet, magnetic lamellar body 2 can drive rack body 1 to shrink.
Some magnetic lamellar bodies 2 can be attached on the inwall of rack body 1 equably or anisotropically; But should ensure when rack body 1 is in contraction state, magnetic lamellar body 2 adjacent one another are can not be overlapping, and support just shrinks.
Medical rack provided by the present invention can be alimentary stent, trachea bracket or intravascular stent etc.
As shown in Figure 2, Medical rack extractor provided by the present invention specifically comprises sacculus 3, electric magnet 4, interior pipe 5 and electromagnet controller 6.
Sacculus 3 is the double-decker (not shown)s be made up of jacket layer and interior jacket layer.Sacculus 3 comprises sacculus mouth 3-1, sacculus neck 3-2 and sacculus head 3-3.Sacculus mouth 3-1 can connect syringe or compression pump, liquid, gas or vesicle medium (such as contrast agent) can be injected in the toroidal cavity between the jacket layer of sacculus 3 and interior jacket layer by syringe or compression pump, the medium injected by sacculus mouth 3-1 arrives sacculus head 3-3 after sacculus neck 3-2, thus sacculus head 3-3 can be made to expand (or expansion).
Interior pipe 5 is through the inner chamber of jacket layer in sacculus 3, and one end of interior pipe 5 passes outside sacculus head 3-3, so that sacculus head 3-3 walks in passage in vivo.Electric magnet 4 is arranged on position corresponding with sacculus head 3-3 on interior pipe 5; The length of the sacculus head 3-3 corresponding with electric magnet 4 should be suitable with the length of the rack body 1 of Medical rack to be got.
The coil that electric magnet 4 comprises core body to be magnetized and is wrapped on core body to be magnetized.In Fig. 2, core body to be magnetized is single independently iron staff (in figure shown in black rectangle frame), the coil outside not shown iron staff.The iron hoop that core body to be magnetized can also have gap by several formed, as shown in Figure 3, in Fig. 3, dash area shows the structure (coil that not shown iron hoop is wound around) of iron hoop outward, the internal diameter of this iron hoop is identical with the internal diameter of interior pipe, the external diameter of iron hoop can identical with the external diameter of interior pipe (as shown in Figure 3), also can not be identical.Single independently iron staff compared by some iron hoops with gap, has good flexibility, more easily makes sacculus head 3-3 bend, and then facilitates sacculus head 3-3 current in tube chamber.The number of iron hoop and the equal adjustable of length.
In interior pipe 5, cross-under has wire, and one end of wire is electrically connected with the coil on electric magnet 4, and the other end stretches out outside interior pipe 5 and is electrically connected with electromagnet controller 6.Electromagnet controller 6 be the coil power supply on electric magnet 4 by wire on the one hand, the intensity (such as realizing by adjustment supply current size) in the magnetic field also produced for regulating magnet 4 on the other hand.The panel of electromagnet controller 6 is provided with on and off switch and magnetic field intensity adjusting knob, can by and off switch and magnetic field intensity adjusting knob easily electric magnet 4 is controlled, be regulated.
In interior pipe 5, all right cross-under seal wire, less at lumen diameter, when branch is comparatively complicated in tube chamber (as blood vessel), first can puts into seal wire, make the sacculus head 3-3 of Medical rack put into lesion locations place along seal wire afterwards under X-ray machine by the method got involved.And comparatively large for lumen diameter, tube chamber branch not too complicated situation (as esophagus), can arrange seal wire.For the situation being provided with seal wire, if interior pipe 5 internal diameter can not do too large, then the wire of cross-under in interior pipe 5 can be embedded on the inwall of interior pipe 5.
In the present invention, Medical rack extractor can also be socketed outward outer tube (not shown) at sacculus neck 3-2.In the process of taking out Medical rack, shrink until Medical rack and be adsorbed on after on sacculus head 3-3, outer tube is promoted by (namely to sacculus head 3-3 direction) forward, or make outer tube keep motionless, sacculus head 3-3 is drawn in outer tube, enters the inner chamber of outer tube to make sacculus head 3-3 together with the Medical rack after the contraction of adsorbing thereon, follow-uply so outwards extracting in the process of support, support more can be avoided to stimulate duct wall, damage is caused to duct wall, make operation safer, reliable.
Interior pipe 5 and outer tube all can be set to flexible plastic tube.
Composition graphs 1 and Fig. 2, see Fig. 4, Medical rack removing method provided by the present invention comprises the steps:
S1: the sacculus head of Medical rack extractor is put into Medical rack place to be got.
X line machine or endoscope auxiliary under, sacculus head 3-3 original passage in body of Medical rack extractor is put into tube chamber Medical rack place to be got, and make sacculus head 3-3 stretch into the inner chamber of Medical rack upper bracket body 1, that is: make sacculus head 3-3 and rack body 1 coincide.
The situation of seal wire is had for cross-under in interior pipe, seal wire original passage in body can be first made to put into tube chamber Medical rack place to be got in this step, make the sacculus head 3-3 of Medical rack extractor put into tube chamber Medical rack place to be got along seal wire afterwards, and make sacculus head 3-3 stretch into the inner chamber of Medical rack upper bracket body 1.
S2: be filled with contrast agent in sacculus head.
By sacculus mouth 3-1, in the toroidal cavity between the jacket layer and interior jacket layer of sacculus, inject contrast agent by syringe or compression pump, expand until sacculus head 3-3 is full of the inner chamber of Medical rack upper bracket body 1 to make sacculus head 3-3.Can also replace contrast agent by other gases, liquid or vesicle in other embodiments, to this present invention, there is no particular restriction.
S3: power to the electric magnet in sacculus head.
Open the on and off switch on electromagnet controller 6 panel, electromagnet controller 6 by the wire in interior pipe 5 to the coil electricity be positioned on the electric magnet 4 of sacculus head 3-3 jacket layer inner chamber, after coil electricity, core body to be magnetized is magnetized and becomes a magnet, around it, produce magnetic field.
S4: the intensity in the magnetic field that regulating magnet produces strengthens gradually.
Magnetic field intensity adjusting knob on rotating electromagnetic rail controller 6 panel, the intensity in the magnetic field that electric magnet 4 is produced strengthens rallentando.
S5: control when Medical rack shrinks or sacculus head is compressed electric magnet the intensity in magnetic field that produces constant.
Magnetic lamellar body 2 on rack body 1 inwall not carrying magnetic itself, but its can the magnetic field that produces by electric magnet 4 attract.When magnetic field intensity is less, though magnetic lamellar body 2 is subject to the attraction in magnetic field, but its displacement can not change; Along with the increase of magnetic field intensity, magnetic lamellar body 2 by static setting in motion, and can move towards electric magnet 4 direction.When magnetic lamellar body 2 moves towards electric magnet 4 direction, rack body 1 can be driven to move together, show as rack body 1 and shrink.X line machine or endoscope auxiliary under, wait be observed visually rack body 1 shrink or sacculus head 3-3 is compressed time (now also observe by the reading of compression pump upward pressure table, namely show that rack body 1 shrinks or sacculus head 3-3 is compressed when the reading of compression pump upward pressure table becomes large), control the intensity in magnetic field that electric magnet 4 produces constant, the magnetic field intensity adjusting knob namely no longer on regulating magnet controller 6 panel.
S6: outwards take out contrast agent from sacculus mouth.
From sacculus mouth 3-1, outwards slowly take out contrast agent by syringe or compression pump, the draw speed and the magnetic field intensity that control contrast agent keep balancing.Although kept magnetic field intensity constant in step S5, but the magnetic field that electric magnet 4 produces around it non-uniform magnetic-field, therefore in the process of rack body 1 contraction, rack body 1 is nearer apart from electric magnet 4, the magnetic field intensity at rack body 1 present position place is stronger, the increase of magnetic field intensity will make rack body 1 shrink quickening, rack body 1 shrinks to be accelerated may occur shrinking uneven phenomenon, therefore, by controlling the draw speed of contrast agent in the present invention, on the basis that magnetic field intensity is constant in step s 5, can be at the uniform velocity under making the drive of rack body 1 within it wall magnetic lamellar body 2, (all directions) shrink equably.
Certainly, if the draw speed controlling contrast agent is constant, there is corresponding change by the intensity controlling the magnetic field that electric magnet produces, to make rack body 1 at the uniform velocity, equably shrink, be also fine.
S7: by first with taking out for the sacculus of Medical rack and Medical rack extractor.
After rack body 1 shrinks completely, namely when rack body 1 is attached on sacculus head 3-3, and after the magnetic lamellar body 2 of rack body 1 inwall tightly held by the electric magnet 4 in sacculus head 3-3, stop outwards taking out contrast agent; Afterwards the sacculus head 3-3 of Medical rack extractor and the Medical rack be adsorbed on sacculus head 3-3 thereof are together taken out in body.
If for the situation being socketed with outer tube outside sacculus neck 3-2, after rack body 1 shrinks completely, outer tube can be promoted to sacculus head 3-3 direction, or keep outer tube motionless, sacculus head 3-3 is drawn in outer tube, to make sacculus head 3-3 and the Medical rack be adsorbed on sacculus head 3-3 together stretches into the inner chamber of outer tube; Again outer tube, sacculus head 3-3 and Medical rack are together taken out in body internal channel afterwards.Because Medical rack is in the inner chamber of outer tube, in taking-up process, support therefore more can be avoided to stimulate duct wall, damage is caused to duct wall, makes taking-up process safer, reliable.
Claims (10)
1. a Medical rack, comprises overall overlay film and with the rack body of inner chamber, described rack body comprises the cylindric body at middle part and the bulge body at two ends; It is characterized in that, the inwall of described rack body is attached with some magnetic lamellar bodies, described magnetic lamellar body can make described rack body shrink under the attraction of magnet.
2. Medical rack according to claim 1, is characterized in that, described magnetic lamellar body is attached on the inwall of described rack body equably by bonding or welding manner.
3. a Medical rack extractor, is characterized in that, comprises sacculus, interior pipe, electric magnet and electromagnet controller; Described sacculus is the double-decker be made up of jacket layer and interior jacket layer; Described sacculus comprises sacculus head, sacculus neck and sacculus mouth, can to injecting gas, liquid or vesicle medium in the toroidal cavity between the described interior jacket layer of described sacculus and described jacket layer by described sacculus mouth, the medium injected can make described sacculus head expand after arriving described sacculus head by described sacculus neck; Described interior pipe is through the inner chamber of jacket layer interior described in described sacculus, and described electric magnet is arranged on the position that described in described interior Guan Shangyu, sacculus head is corresponding; In described interior pipe, cross-under has wire, and described electromagnet controller to be powered for described electric magnet by described wire and the intensity in the magnetic field that regulates described electric magnet to produce.
4. Medical rack extractor according to claim 3, is characterized in that, described electric magnet comprises core body to be magnetized and is wrapped in the coil on described core body to be magnetized, and described coil is electrically connected with the wire of cross-under in described interior pipe.
5. Medical rack extractor according to claim 4, is characterized in that, described core body to be magnetized formed by single independently iron staff or by some iron hoops with gap.
6. Medical rack extractor according to claim 3, is characterized in that, described Medical rack extractor also comprises the outer tube be socketed in outside described sacculus neck.
7. Medical rack extractor according to claim 3, is characterized in that, the length of described sacculus head is suitable with the length of Medical rack to be got.
8. a Medical rack removing method, is characterized in that, the Medical rack extractor adopted is the Medical rack extractor described in any one of claim 3 ~ 7, and Medical rack to be got is the Medical rack described in claim 1 or 2;
Described Medical rack removing method comprises the steps:
A, x line machine or endoscope auxiliary under, the sacculus head of Medical rack extractor is put into Medical rack place to be got through body internal channel, and makes sacculus head stretch into the inner chamber of Medical rack;
B, by sacculus mouth to injecting gas, liquid or vesicle medium in the toroidal cavity between the jacket layer and interior jacket layer of sacculus, expand to make sacculus head until sacculus head is full of the inner chamber of Medical rack;
C, by electromagnet controller to being positioned at sacculus jacket layer inner chamber and the electric magnet corresponding with sacculus head is energized;
D, to be controlled the intensity in magnetic field that electric magnet produces under electrical condition by electromagnet controller, and the intensity in the magnetic field that electric magnet is produced strengthens gradually;
Moved from static becoming towards described electric magnet direction in the process that magnetic lamellar body on e, Medical rack inwall strengthens gradually in the intensity in the magnetic field that electric magnet produces, wait be observed visually Medical rack shrink or sacculus head is compressed time, control the intensity in magnetic field that electric magnet produces constant;
F, outwards taken out the medium injected in step b by sacculus mouth, the draw speed of control medium, can shrink equably under making the drive of Medical rack within it wall magnetic lamellar body;
G, after Medical rack shrinks completely, the sacculus of Medical rack extractor and the Medical rack be adsorbed on sacculus head together to be taken out in body.
9. Medical rack removing method according to claim 8, is characterized in that, the medium injected in step b is contrast agent.
10. Medical rack removing method according to claim 8, is characterized in that, in step g after Medical rack shrinks completely, and before Medical rack is removed, also comprises the steps:
The outer tube that is socketed in outside sacculus neck is promoted to sacculus head direction, or keeps outer tube motionless, sacculus head is drawn in outer tube, to make sacculus head and the Medical rack be adsorbed on sacculus head together enters in outer tube.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510000788.0A CN104546245B (en) | 2015-01-04 | 2015-01-04 | Medical rack, Medical rack extractor and removing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510000788.0A CN104546245B (en) | 2015-01-04 | 2015-01-04 | Medical rack, Medical rack extractor and removing method |
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| CN110141409A (en) * | 2019-06-25 | 2019-08-20 | 中国医学科学院阜外医院 | Yarn guide component is used in a kind of conveying of branch type overlay film frame |
| CN110167492A (en) * | 2016-11-09 | 2019-08-23 | 波士顿科学国际有限公司 | Bracket anchor system |
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| CN109773820B (en) * | 2017-11-14 | 2022-09-20 | 元心科技(深圳)有限公司 | Clamp |
| CN110141409A (en) * | 2019-06-25 | 2019-08-20 | 中国医学科学院阜外医院 | Yarn guide component is used in a kind of conveying of branch type overlay film frame |
| CN110141409B (en) * | 2019-06-25 | 2021-08-20 | 中国医学科学院阜外医院 | Guide wire assembly for conveying forked type covered stent |
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| CN104546245B (en) | 2017-04-05 |
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