A kind of operation on liver bloodstream blocking deviceTechnical field
The present invention relates to a kind of operation on liver bloodstream blocking device, belong to medical instruments field.
Background technology
Injury of inferior vena cava is one of most reluctant situation in trauma of abdomen surgery behind vena hepatica root and liver, deadRate is high, even can reach 80-100% in case and few diagnosis and treatment central death rate, reason is exactly to appear wound extremelyDifficulty, even if it is also that, using massive haemorrhage and/or aeroembolism as cost, and can not obtain clearly surgical field of view to appear reluctantly.
The certain methods of forefathers have：Blocked 1. using on hollow soft conduit, but the liver needed and dissociating respectively under liverInferior caval vein, inserts blocking band, or even need out chest；2. realize full hepatic vascular exclusion using the double soft conduits of sacculus of upper and lower endsIt is disconnected, but operability is poor, and efficiency is low, in practice it has proved that do not obtain good survival rate, is gradually going out of use now；3. use bodyOuter blood shunting device, but it is cumbersome, and condition requires high, it is impossible to widely available；4. pole single cases, are realized using overlay film frameHemostasis, but need to carry out under conditions of Digital Subtraction, does not just further take out after the stenter to implant, its subsequently such as thrombus, embolismRisk is self-evident, while this method needs to carry out in the case where vital sign patient stablizes relatively, for being carried out in massive haemorrhageThe patient of phase does not apply at all.
The content of the invention
In view of the deficienciess of the prior art, the technical problems to be solved by the invention are to provide a kind of operation on liver bloodOccluding device is flowed, the weak point of existing blood occluding device is solved, Inferior Vena Cava Blood Flow can be prevented to be outflowed from wound,Clearly surgical field of view is obtained, is easy to repair vascular injury site
In order to solve the above technical problems, the present invention is adopted the technical scheme that, a kind of operation on liver bloodstream blocking device, bagInclude non-displacement device is provided with the body in implantable vessel, one end outer surface of the body, body is internally provided withBlood occluding device is provided with cavity, cavity；The non-displacement device includes expander, and expander includes some be uniformly arrangedRaised in the step on the outer surface of body one end, step projection is wedge shape；The step projection is upper and outer surface of tube body cooperationIt is provided with surface on the position coordinated on adjustment tank, body with adjustment tank and is provided with fluting, step is raised can relative to flutingShrink and expand；The adjustment tank is slotted for wedge shape, the direction of the depth increase of adjustment tank and the increased side of step height of projectionTo consistent；Some expanding bars are provided with the cavity；One end of the expanding bar and adjustment tank sliding contact, other end connectionThere is a loop connecting device, expanding bar is rotated with loop connecting device and is connected；The blood occluding device is arranged at sky including someThe valve of intracavitary；One end of the valve is connected with cavity inner wall by axis of rotation, and the other end is rotatably connected to a promotionBar；The catch bar is rotatably connected to knee, and knee is rotatably connected to a promotion ring；The blood occluding device also includes oneIndividual blood siphunculus, loop connecting device and promotion ring set are connected on blood siphunculus, and an adjustment ring is also socketed with blood siphunculus, is adjustedThe domain is connected with blood siphunculus by threads turn.
Optimization, above-mentioned operation on liver bloodstream blocking device, the blood siphunculus is provided with loudspeaker close to one end of valveMedicament slow release layer I and medicament slow release layer II are provided with the opening of shape, the inwall of blood siphunculus, medicament slow release layer I and medicine are slowRelease and be provided with medicament slow release hole outside layer II.
Optimize, above-mentioned operation on liver bloodstream blocking device, anticoagulation medicine, medicine are provided with the medicament slow release layer IAnti-spasm medicine is coated with thing slow release layer II.
Optimization, above-mentioned operation on liver bloodstream blocking device, the anticoagulation medicine is heparin, and anti-spasm medicine is chlorobenzeneAmmonia butyric acid.
Optimization, above-mentioned operation on liver bloodstream blocking device, the valve is Inflatable air bag type valve.
Optimize, above-mentioned operation on liver bloodstream blocking device, some adjustment scales be provided with the blood siphunculus surface,The spacing between scale is adjusted to promote the 1/13 of pole length.
The advantage of the invention is that：
(1) non-displacement device is provided with, the position of bloodstream blocking device in the blood vessels is facilitated and fixes, in surgical procedureIn, will not because of muscular tremor and caused by device shift, improve and use reliability.
(2) wedge-shaped fixing device is more smooth in device intravasation, and can provide enough fixation holding powers.
(3) when bloodstream blocking device intravasation, loop connecting device on the retracted position of blood siphunculus, expanding bar thisWhen in minimum state is in the angle of blood siphunculus, step projections collapse facilitates bloodstream blocking device intravasation.
When bloodstream blocking device intravasation precalculated position, loop connecting device is slided on blood siphunculus, expanding barBecome larger with the angle of blood siphunculus, expanding bar is expanded outwardly, so as to promote step projection to expand outwardly, when step projection reachesDuring to blood vessel contact condition, stop mobile ring-type connector.The raised contact 150mmHG with blood vessel of stepWhen, it is that stationary state is optimal under optimum pressure state, this state and will not injured blood vessel wall.
(4) the application promotes ring to promote knee by valve blocking blood flow, and knee drives catch bar, and catch bar promotes valveFilm closure expansion.
(5) ring is promoted to be socketed on simultaneously on blood siphunculus with loop connecting device, when the adjustment ring on blood siphunculus is in bloodWhen being moved on siphunculus, adjustment ring can promote ring and loop connecting device simultaneously, both same lucks on blood siphunculus after makingDynamic identical displacement, the i.e. non-displacement device of the present apparatus and blood occluding device is acted simultaneously, and once-through operation can complete fixedPosition and blood are blocked, and save operating time.
(6) consider that volume is minimum because the present apparatus is endovascular device, how to determine step raised and blood vesselPressure value is a problem.Based on this point, an air bag can be installed in the step projection of the application, air bag connects an air bagPipe, airsac tube connection type inflatable air pressure determines device, so by determining the inner gas pressure of air bag, step can be made raised withBlood vessel ensures optimal contact condition in contact.
(7) in surgical procedure, in the event of muscle cramp, blood vessel can produce wriggling, so as to influence bloodstream blocking device to existEndovascular position, the application overcomes this difficult point.
When adjusting adjustment ring, non-displacement device and blood occluding device are acted simultaneously, in the process, for some timeBlood flow is gradually reduced but will not blocked completely, and now, the blood of some flows through out of blood siphunculus, now, and blood leads toThe anti-spasm medicine coated in medicament slow release layer I in pipe on the anticoagulation medicine of coating, medicament slow release layer II slowly entersIn blood, anticoagulation and antitetanic effect are served, the position of device in the blood vessels is stabilized.
(8) use heparin as anticoagulant, heparin is clinically mainly used in thrombus as a kind of conventional anticoagulantEmbolism class diseases, myocardial infarction, operation on vessels of heart, cardia catheterization, extracorporal circulatory system, haemodialysis etc..For liver be becauseFound first and liver cell for heparin, and unexpected anticoagulant effect can be reached applied to liver.Prevent deviceOverlong time, occurs the symptom of local thrombus, it is ensured that the probability of success of operation in the blood vessels.
In the technical scheme of the application, non-displacement device and blood occluding device are indispensable, have lacked anti-displacement dressPut, do not ensure fixed position, influence operation progress, lacked blood occluding device and be unable to reach desired effects.And both thisIt is to act simultaneously in surgical procedure, is so greatly saved operating time, improves the survival probability of patient.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
In figure 1 be body, 2 be cavity, 3 be step it is raised, 4 be adjustment tank, 5 be fluting, 6 be expanding bar, 7 be that ring-type connectsConnect device, 8 be valve, 9 be catch bar, 10 be knee, 11 be promote ring, 12 be blood siphunculus, 13 be adjustment ring, 14 be medicine delayIt is medicament slow release layer II to release layer I, 15.
Embodiment
The technical characterstic of the present invention is expanded on further with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
The present invention is a kind of operation on liver bloodstream blocking device, including the body in implantable vessel, the one of the bodyEnd is provided with non-displacement device on outer surface, and being internally provided with cavity, cavity for body is provided with blood occluding device；It is describedNon-displacement device includes expander, and expander includes some steps projections being uniformly arranged on the outer surface of body one end, stepProjection is wedge shape；The step projection above and on the surface of outer surface of tube body cooperation is provided with adjustment tank, body and adjustment tankFluting is provided with the position of cooperation, step is raised relative to collapsible and expansion of slotting；The adjustment tank is slotted for wedge shape, is adjustedThe direction of the depth increase of whole groove is consistent with the increased direction of step height of projection；Some expanding bars are provided with the cavity；One end of the expanding bar and adjustment tank sliding contact, the other end are connected with a loop connecting device, expanding bar and loop connectingDevice rotates connection；The blood occluding device includes some valves being arranged in cavity；In one end and cavity of the valveWall is connected by axis of rotation, and the other end is rotatably connected to a catch bar；The catch bar is rotatably connected to knee, and knee turnsIt is dynamic to be connected with a promotion ring；The blood occluding device also includes a blood siphunculus, and loop connecting device and promotion ring set connectIn being also socketed with an adjustment ring on blood siphunculus, on blood siphunculus, adjustment ring is connected with blood siphunculus by threads turn.InstituteState blood siphunculus be provided with close to one end of valve on horn-like opening, the inwall of blood siphunculus be provided with medicament slow release layer IWith medicament slow release layer II, medicament slow release hole is provided with outside medicament slow release layer I and medicament slow release layer II.In the medicament slow release layer IIt is provided with anticoagulation medicine, medicament slow release layer II and is coated with anti-spasm medicine.The anticoagulation medicine is heparin, antispasmodicThing is baclofen.The valve is Inflatable air bag type valve.Some adjustment scales are provided with the blood siphunculus surface,The spacing between scale is adjusted to promote the 1/13 of pole length.
The advantage of the invention is that：
(1) non-displacement device is provided with, the position of bloodstream blocking device in the blood vessels is facilitated and fixes, in surgical procedureIn, will not because of muscular tremor and caused by device shift, improve and use reliability.
(2) wedge-shaped fixing device is more smooth in device intravasation, and can provide enough fixation holding powers.
(3) when bloodstream blocking device intravasation, loop connecting device on the retracted position of blood siphunculus, expanding bar thisWhen in minimum state is in the angle of blood siphunculus, step projections collapse facilitates bloodstream blocking device intravasation.
When bloodstream blocking device intravasation precalculated position, loop connecting device is slided on blood siphunculus, expanding barBecome larger with the angle of blood siphunculus, expanding bar is expanded outwardly, so as to promote step projection to expand outwardly, when step projection reachesDuring to blood vessel contact condition, stop mobile ring-type connector.The raised contact 150mmHG with blood vessel of stepWhen, it is that stationary state is optimal under optimum pressure state, this state and will not injured blood vessel wall.
(4) the application promotes ring to promote knee by valve blocking blood flow, and knee drives catch bar, and catch bar promotes valveFilm closure expansion.
(5) ring is promoted to be socketed on simultaneously on blood siphunculus with loop connecting device, when the adjustment ring on blood siphunculus is in bloodWhen being moved on siphunculus, adjustment ring can promote ring and loop connecting device simultaneously, both same lucks on blood siphunculus after makingDynamic identical displacement, the i.e. non-displacement device of the present apparatus and blood occluding device is acted simultaneously, and once-through operation can complete fixedPosition and blood are blocked, and save operating time.
(6) consider that volume is minimum because the present apparatus is endovascular device, how to determine step raised and blood vesselPressure value is a problem.Based on this point, an air bag can be installed in the step projection of the application, air bag connects an air bagPipe, airsac tube connection type inflatable air pressure determines device, so by determining the inner gas pressure of air bag, step can be made raised withBlood vessel ensures optimal contact condition in contact.
(7) in surgical procedure, in the event of muscle cramp, blood vessel can produce wriggling, so as to influence bloodstream blocking device to existEndovascular position, the application overcomes this difficult point.
When adjusting adjustment ring, non-displacement device and blood occluding device are acted simultaneously, in the process, for some timeBlood flow is gradually reduced but will not blocked completely, and now, the blood of some flows through out of blood siphunculus, now, and blood leads toThe anti-spasm medicine coated in medicament slow release layer I in pipe on the anticoagulation medicine of coating, medicament slow release layer II slowly entersIn blood, anticoagulation and antitetanic effect are served, the position of device in the blood vessels is stabilized.
(8) use heparin as anticoagulant, heparin is clinically mainly used in thrombus as a kind of conventional anticoagulantEmbolism class diseases, myocardial infarction, operation on vessels of heart, cardia catheterization, extracorporal circulatory system, haemodialysis etc..For liver be becauseFound first and liver cell for heparin, and unexpected anticoagulant effect can be reached applied to liver.Prevent deviceOverlong time, occurs the symptom of local thrombus, it is ensured that the probability of success of operation in the blood vessels.
In the technical scheme of the application, non-displacement device and blood occluding device are indispensable, have lacked anti-displacement dressPut, do not ensure fixed position, influence operation progress, lacked blood occluding device and be unable to reach desired effects.And both thisIt is to act simultaneously in surgical procedure, is so greatly saved operating time, improves the survival probability of patient.
Certainly, described above is not limitation of the present invention, and the present invention is also not limited to the example above, the artThose of ordinary skill, the present invention essential scope in, the variations, modifications, additions or substitutions made, should all belong to the present inventionProtection domain.