CN102302378A - Saccule-type vena cava membrane puncturing dilator - Google Patents
Saccule-type vena cava membrane puncturing dilator Download PDFInfo
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- CN102302378A CN102302378A CN201110172079A CN201110172079A CN102302378A CN 102302378 A CN102302378 A CN 102302378A CN 201110172079 A CN201110172079 A CN 201110172079A CN 201110172079 A CN201110172079 A CN 201110172079A CN 102302378 A CN102302378 A CN 102302378A
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- membrane
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- barrier film
- dilator
- membranes
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Abstract
The invention discloses a vena cava membrane puncturing device used for endovascular therapy. In recent years, the method for interventional therapy of the membrane-type Budd-Chiari syndrome (BCS) utilizes a hollow membrane puncturing needle and adopts the principle that a membrane is punctured by the membrane puncturing needle, a guide wire penetrates through the membrane to guide a saccule to dilate so as to eliminate a stenotic segment, or the membrane is directly punctured by the guide wire. The technology has the key point that the needle head is aligned to the center of the membrane and proper force is required, while the defect lies in that if the direction of the needle head does not align to the center but deviate to the periphery and the force is overlarge, a blood vessel can be punctured, the membrane puncturing needle is mistakenly punctured into the pleura or the heart sac, causing unnecessary injury, and a saccule catheter is required to be changed for secondary membrane dilatation after the membrane puncturing. The invention provides a vena cava membrane puncturing dilator, which is characterized in that a dilatable saccule with fixing and orienting functions is added on the periphery of the tip of traditional membrane puncturing needle, and can overcome the defects of high difficulty of the membrane puncturing technology and high risk and achieve better effects of one-time membrane puncturing and membrane dilatation.
Description
Technical field
The present invention relates to a kind of medical apparatus, more particularly, relate to a kind of blood vessel barrier film that is used for the blood vessel intracavity operation and abolish dilator.
Background technology
Bu-Jia Cotard be meant liver back segment postcava or (with) the narrow or pathological changes of entirely shutting of hepatic vein; Cause the hepatic vein backflow obstruction, show as hepatomegaly clinically, carrying out property liver dysfunction and a large amount of ascites; Severe patient can have upper gastrointestinal hemorrhage; The all concurrent liver cirrhosis of hematemesis and melena, patients with terminal, the life that serious threat is human.The sickness rate of China's primary disease is higher.The most common type is a postcava limitation stenosis or occlusion type, wherein is divided into simple postcava diaphragm type again, and the postcava limitation is narrow blocks with the postcava limitation.Also have postcava dispersivity stenosis or occlusion type, how to cause by extensive thrombosis.For postcava proximal part imperfection or the membranaceous obstruction of completeness, postcava segmental stricture, obstructive position far-end do not have thrombosis and the unobstructed person of hepatic vein is replaced by the many interventional therapys of the little advantage of wound mostly.For the membranaceous obstruction of postcava proximal part completeness, existing interventional therapy method is that seal wire guides the rupture of membranes pin to barrier film or stenosis, is poked barrier film by the rupture of membranes pin, and seal wire is through barrier film, and the guiding balloon expandable is eliminated narrow section.Also there is the people directly to use the seal wire rupture of membranes.Key with the rupture of membranes pin is that syringe needle is aimed at membranous central authorities, and dynamics wants suitably, if direction is not aimed at central authorities and departed from towards periphery, exerts oneself excessively then can poke blood vessel, is strayed into pleura or pericardium and causes hydropneumothorax or the pericardial tamponade that jeopardizes patient's life.No matter using seal wire still is the rupture of membranes pin, because distance from point of puncture to barrier film is longer, support force is not enough, and dynamics is difficult to hold, and direction is difficult to control, causes that the rupture of membranes difficulty is big, the time long, success rate is not high, the accidental injury rate is high.Behind rupture of membranes, also to exchange the foley's tube secondary and expand film.
Summary of the invention
The objective of the invention is to overcome the deficiency of existing rupture of membranes pin technology; A kind of safer, effective film breaking unit is provided; Make the rupture of membranes pin obtain stronger support, rupture of membranes success back directly expansion barrier film need not to withdraw from the caval vein barrier film that the rupture of membranes pin exchanges sacculus in addition and abolishes dilator.Further also provide a kind of direction can control and can regulate arbitrarily, dynamics can be held, and paracentesis depth can be controlled, and has higher success rate and more convenient caval vein barrier film is abolished dilator.
In order to achieve the above object, technical scheme of the present invention is: this balloon type caval vein barrier film is abolished dilator, is made up of two parts, on existing hollow rupture of membranes pin basis, sets up outer field balloon cavity inner fixer.It is outer that the balloon cavity inner fixer is nested in hollow rupture of membranes pin, and both are imported by common seal wire traction jointly.Its ultimate principle is that the intracavity holder struts near the postcava barrier film, fits tightly with the caval vein wall, gives the rupture of membranes pin enough supports, thereby makes the rupture of membranes pin can easily wear out barrier film.
Described hollow rupture of membranes pin is that the tube chamber of hollow and sharp-pointed head end are arranged, and afterbody is connected with the flexible minute hand of syringe interface, so that at the needle tubing interimage.In order to reach the function of rupture of membranes, the material of hollow rupture of membranes pin can effectively conduct the medical material of thrust for having certain bendability and toughness, as using rustless steel, has the similar characteristics macromolecular material and also can use.
Sometimes barrier film is comparatively hard, and puncture need worn out membranous moment than great, because effect of inertia, the broken barrier film continued of rupture of membranes spicula is walked longer distance forward, and the danger of wearing out tube wall is arranged, and causes severe complications.For preventing that it from taking place, and can be carved with length mark at the afterbody of hollow rupture of membranes pin.Afterbody at hollow rupture of membranes pin is with mobilizable length restriction handle simultaneously.This handle is placed in outside the rupture of membranes pin, and the nut groove and the hold-down nut of the oriented outer process of handle front end side wall make the two fastened to each other thereby can closely contact the two frictional force of increase with rupture of membranes pin sidewall after hold-down nut tightens.The length restriction handle can be free to slide at the afterbody of hollow rupture of membranes pin; To limit the length of intracavity holder afterbody to rupture of membranes pin between the length joystick front end; Just be used for going out the length of the hollow needle of sheath rupture of membranes, its length can be found out in the tail length labelling of hollow rupture of membranes pin.After length limits well, tighten the hold-down nut of length restriction handle, length just can be fixed and can not be changed like this.
Foley's tube intracavity holder can be designed to single leaf-head ductus bursae formula.The tradition foley's tube is nested by two-layer conduit with one heart, and inner conductor is used to guide seal wire, and the outer conductor afterbody communicates with the sidewall feed tube, and head end is wrapped in the sacculus and the outer conductor tube chamber communicates with balloon cavity.The liquid that is mixed with contrast agent from the input of sidewall feed tube gets into sacculus through outer conductor makes its expansion.Characteristics of the present invention are that the tube chamber of inner conductor is increased to adapt to walking of rupture of membranes pin.It is fixing to reach the purpose of direction control that adherent expansion through sacculus during use provides circumferential support force to make rupture of membranes be directed against the position and the direction of accurate barrier film central authorities, so design make in the rupture of membranes process rupture of membranes pin not arbitrarily deflection cause accidental injury.
But the barrier film form is irregular in some cases, and eccentricity barrier film for example is comparatively tough and tensile between wherein, is difficult to rupture of membranes.Perhaps be that the narrow or limitation of limitation is blocked, the less position of narrow fine gap or degree of congestion is in the center, and at periphery.Make it navigate to barrier film weak spot or narrow gap place then can more easy rupture of membranes success if can adjust rupture of membranes pin puncture position.Leafy foley's tube formula can satisfy this demand just.The sacculus of said leafy foley's tube front end is isolated mutually and mutual manifold card, is fixed in the leafy sacculus of centre pipe jointly, and its shared top of outer feed liquor conduit sends branch's feed liquor conduit afterwards respectively and gets into each leaf-head capsule.The outside, branch feed liquor conduit top of leafy foley's tube is with the multiaspect control valve.The multiaspect control valve is the hollow multi-faceted column of certain altitude, and the hollow size can be wrapped in duct portion just, and the quantity of face equates with the number of sheets of leaflet sacculus.There is check valve in the central authorities of each face, feed liquor clearness of catheter when the direction of check valve is parallel to foley's tube, feed liquor closed catheter during perpendicular to foley's tube.Check valve can be controlled opening and closing of each branch's feed liquor conduit.The sidewall feed tube of foley's tube sends at place, shared top.Compression pump is connected in the sidewall feed tube during use; Regulate check valve; Make the feed liquor conduit opening state of each leaflet sacculus of leafy sacculus different with degree, then when working pressure pump feed liquor, what are different for each leaflet sacculus feed liquor; The expansion situation is different, under force action, can arbitrarily control the direction of rupture of membranes pin.
The duct portion of leafy foley's tube also can be similar to existing three-cavity catheter for each sacculus is provided with independent feed liquor conduit.
The rupture of membranes pin also can be aimed at diaphragm center under each leaf-head capsule feed liquor same case.Behind successful rupture of membranes, make compression pump be negative pressure state and impel sacculus to recover to shrink, the follow-up foley's tube is regulated the multiaspect control valve and is made each check valve be in open state to the barrier film place under the guiding of rupture of membranes pin again, and dilating sacculus can make barrier film abolish fully once more.Said device can guide under common seal wire.The sacculus of said balloon cavity inner fixer makes it full by compression pump.
For make whole device in transportation, import, discharged in the title and keep one, mainly be intermediary rupture of membranes pin can be in importing or rupture of membranes deviate from sheath pipe even injured blood vessel before beginning, be connected to rupture of membranes pin locking nut at the afterbody of balloon cavity inner fixer.The catheter tail of locking nut and balloon cavity inner fixer is mutually nut structure, and the rupture of membranes pin can't move in the intracavity holder during locking, but after whole device location discharged successfully, adjusting rupture of membranes length was back-outed nut and begun rupture of membranes.
Compare with the simple rupture of membranes pin of prior art and the use of seal wire, beneficial effect provided by the invention is:
1. utilize caval vein membrane-repturing device of the present invention can effectively control the direction of rupture of membranes pin; Simultaneously can regulate the length that the rupture of membranes pin goes out pin; Can and not wear out barrier film moment action of inertia because of the deviation of directivity; The broken barrier film continued of rupture of membranes spicula is walked long distance forward makes the rupture of membranes pin be strayed into pleural space and pericardium, causes life-threatening severe complication.
2. utilize the expansion of foley's tube to fix, can be through the expansion of sacculus, the fixed firm degree of adjustment intracavity.The use of leaflet sacculus can also be according to the concrete condition of barrier film, stenosis or occlusion, and adjustment rupture of membranes point is to the optimum position, for successful rupture of membranes increases probability.
3. foley's tube of the present invention part also can play the narrow barrier film of expansion in the follow-up of rupture of membranes success continued except having fixedly the support effect, and the narrow effect of treatment caval vein reaches rupture of membranes and treats integrated effect.
Description of drawings
Fig. 1 list leaf-head capsule die cavity vein barrier film is abolished the dilator sketch map;
The leafy balloon type caval vein of Fig. 2 a barrier film is abolished the dilator sketch map;
The cross section that A-A ' locates among Fig. 2 b Fig. 2 a;
The cross section that B-B ' locates among Fig. 2 c Fig. 2 a;
The leafy sacculus sketch map of Fig. 3 a;
The cross section that C-C ' locates among Fig. 3 b Fig. 3 a;
Fig. 4 a balloon type caval vein barrier film is abolished dilator rupture of membranes centre type barrier film sketch map;
Fig. 4 b balloon type caval vein barrier film is abolished dilator rupture of membranes eccentric type barrier film sketch map.
Practical implementation
Below in conjunction with accompanying drawing and this embodiment the present invention is described in further detail:
Single leaf-head capsule die cavity vein barrier film is abolished dilator; Referring to accompanying drawing 1.
Abolish dilator like Fig. 1 for single leaf-head capsule die cavity vein barrier film, form by the hollow rupture of membranes pin 1 and the outer field balloon cavity inner fixer at center.Hollow rupture of membranes pin is a hollow needle, and afterbody is connected with the flexible minute hand of syringe interface 2, and the afterbody 20cm length of hollow rupture of membranes pin is carved with length mark 3, and its long measure is 1cm.Afterbody at hollow rupture of membranes pin is with mobilizable length restriction handle 4 simultaneously.The nut groove of the oriented outer process of handle front end side wall and hold-down nut 5.Traditional foley's tube is nested by two-layer conduit with one heart, and inner conductor is used to guide seal wire, and the outer conductor afterbody communicates with the sidewall feed tube, and head end is wrapped in the sacculus and the outer conductor tube chamber communicates with balloon cavity.The liquid that is mixed with contrast agent from the input of sidewall feed tube gets into sacculus through outer conductor makes its expansion.The foley's tube 8 of single leaf-head blister cavities inner fixer of the present invention is that the tube chamber of traditional foley's tube is increased adapting to walking of rupture of membranes pin 1, as 6 being the sidewall feed tube among Fig. 1.Adherent expansion through sacculus provides the circumferential support and the control of direction.Rupture of membranes is fixed to the position and the direction of accurate barrier film central authorities, make rupture of membranes cross in the title rupture of membranes pin not arbitrarily deflection cause accidental injury.Afterbody at the balloon cavity inner fixer is connected to rupture of membranes pin locking nut 7.The catheter tail of locking nut and balloon cavity inner fixer is mutually nut structure.
Leafy balloon type caval vein barrier film is abolished dilator; Referring to accompanying drawing 2, Fig. 3.
On the above embodiment basis, sacculus is designed to leafy structure.Present embodiment is an example with 3 leaves.As shown in Figure 3; Each leaf-head capsule 11 of leafy foley's tube formula intracavity holder is isolated mutually and mutual manifold card; Be fixed in inner conductor 12 jointly; Its feed tube 6 shared tops send the branch's feed tube 14 that is surrounded by inner conductor 12 and outer conductor 13 and each leaflet sacculus separation membrane afterwards respectively and get into each leaf-head capsule.The outside, branch feed tube top of leafy foley's tube is with multiaspect control valve 10.The multiaspect control valve is the hollow multi-faceted column of certain altitude, and the quantity of face equates that with the number of sheets of leaflet sacculus 15 this example is 3.There is check valve 11 in the central authorities of each face.The hollow size can be wrapped in the conduit outside just, and check valve can be controlled opening and closing of each branch's feed tube.The sidewall feed tube 6 of foley's tube sends at place, shared top.Through the adjusting of check valve, how many differences of each leaflet sacculus feed liquor, the expansion situation is different, under force action, can arbitrarily control the direction of rupture of membranes pin.
Balloon type caval vein barrier film as shown in Figure 4 is abolished dilator; Wherein Fig. 4 a is the centre type barrier film; Use seal wire guiding sacculus die cavity vein barrier film to abolish dilator to the barrier film place; Make each check valve of multiaspect control valve be in opening state, the contrast agent of feed tube input dilution makes the evenly extremely full as figure form of leafy sacculus.According to the barrier film form and the thickness of radiography prompting, to move rupture of membranes pin length restriction handle and to appropriate length, tighten hold-down nut, the rupture of membranes pin went out sheath length and limited this moment.Unclamp rupture of membranes pin locking screw and just can accomplish rupture of membranes.Rupture of membranes success back retraction sacculus is serving as that guiding continues the follow-up sacculus through narrow diaphragm section with the rupture of membranes pin, and expansion is thoroughly expanded barrier film once more, reaches therapeutic effect.Rupture of membranes sketch map when Fig. 4 b is the eccentric type barrier film; After the caval vein barrier film of having good positioning this moment is abolished dilator; Make each check valve of multiaspect control valve be in opening state earlier; Close a side check valve after sacculus is partly full and make contrast agent can't continue full this leaf-head capsule, and other leaflet sacculus continue to fill.So adjusting can make rupture of membranes be directed against accurate barrier film weakness, easily accomplishes rupture of membranes.
Claims (10)
1. a caval vein barrier film is abolished dilator, it is characterized in that: be made up of hollow rupture of membranes pin and balloon cavity inner fixer, the balloon cavity inner fixer is made up of conduit and sacculus two parts, and the balloon cavity inner fixer is placed in outside the hollow rupture of membranes pin.
2. caval vein barrier film according to claim 1 is abolished dilator, it is characterized in that the afterbody of said hollow rupture of membranes pin is with mobilizable length restriction handle.
3. caval vein barrier film according to claim 1 is abolished dilator, it is characterized in that described intracavity holder is single leaf-head ductus bursae formula.
4. caval vein barrier film according to claim 1 is abolished dilator, it is characterized in that described intracavity holder is leafy foley's tube formula.
5. abolish dilator according to the said balloon type caval vein of claim 4 barrier film; The front end that it is characterized in that described leafy foley's tube formula intracavity holder is for completely cutting off and be fixed in jointly the leafy sacculus of centre pipe mutually; The shared top of its feed tube sends branch's feed tube afterwards respectively and gets into each leaf-head capsule.
6. abolish dilator according to the said balloon type caval vein of claim 4 barrier film, it is characterized in that being with the multiaspect control valve in the outside, branch feed tube top of described leafy foley's tube.
7. abolish dilator according to claim 4 or 6 said balloon type caval vein barrier films; It is characterized in that the multiaspect control valve in the outside, described leafy foley's tube branch feed tube top is the hollow multi-faceted column of certain altitude; The quantity of face equates that with the number of sheets of leaflet sacculus there is check valve in the central authorities of each face.
8. abolish dilator according to claim 3 or 4 said balloon type caval vein barrier films, it is characterized in that rupture of membranes pin locking nut being arranged at said foley's tube afterbody.
9. according to the said caval vein barrier film of claim 1 breaker, it is characterized in that said hollow rupture of membranes pin and the intracavity holder rupture of membranes position in the intravasation under common seal wire guiding.
10. according to the said caval vein barrier film of claim 1 breaker, it is characterized in that the sacculus of said balloon cavity inner fixer makes it full by compression pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110172079A CN102302378A (en) | 2011-06-23 | 2011-06-23 | Saccule-type vena cava membrane puncturing dilator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110172079A CN102302378A (en) | 2011-06-23 | 2011-06-23 | Saccule-type vena cava membrane puncturing dilator |
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| CN102302378A true CN102302378A (en) | 2012-01-04 |
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| CN201110172079A Pending CN102302378A (en) | 2011-06-23 | 2011-06-23 | Saccule-type vena cava membrane puncturing dilator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157147A (en) * | 2013-04-01 | 2013-06-19 | 陈宁 | Disposable adjustable totally enclosed type absorbing device for excreta in air passage |
| CN104095659A (en) * | 2013-04-10 | 2014-10-15 | 山东威高集团医用高分子制品股份有限公司 | Lockable thumb push-pull slide block biopsy forceps |
| CN108392294A (en) * | 2017-02-07 | 2018-08-14 | 先健科技(深圳)有限公司 | Sting device and anchoring device |
| CN113116481A (en) * | 2019-12-30 | 2021-07-16 | 上海创心医学科技有限公司 | Intracavity membrane rupturing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157147A (en) * | 2013-04-01 | 2013-06-19 | 陈宁 | Disposable adjustable totally enclosed type absorbing device for excreta in air passage |
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| CN113116481A (en) * | 2019-12-30 | 2021-07-16 | 上海创心医学科技有限公司 | Intracavity membrane rupturing device |
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Application publication date: 20120104 |