A kind of support is inserted with support conduitTechnical field
The present invention relates to medical catheter technical field, and in particular to a kind of support is inserted with support conduit.
Background technology
Stomach duodenum is narrow or blocks in the majority with malignant change, is Stomach duodenum and surrounding organ malignant tumourThe caused common complication of infiltration, compressing.Because it directly causes eating disorder to produce the symptoms such as nausea and vomiting, thus seriouslyThe quality of life of patient is have impact on, or even patient is accelerated death.Traditional surgical method damages larger to patient, andIt has been often course advancement late period because neoplastic lesion causes during obstruction, has been often accompanied by ascites, abdominal cavity adhesion and transfer, therefore makePalliative stomach, jejunum change its course the increase of surgical drainage risk, and gastrointestinal decompression, intravenous nutrition or percutaneous small needed for sustaining lifeIntestines, which put pipe nutrition, then makes the quality of life of patient low.Duodenum Stent Placement, refers to insert technology using inner supportNarrow or obstruction duodenum section is expanded, a kind for the treatment of method for resettling passage.Stomach duodenum is narrowInner support PCI can make narrow and obstruction stomach, 12 fingers in the method for non-surgery operation using interventional minimally-invasive technologyIntestines lead to again.But, conventional implants are big due to gastral cavity volume, and seal wire, bracket conveyer distort in stomach intracavitary, lack enough branchSupport force, sizable difficulty is brought to operation.
The content of the invention
Therefore, the technical problem to be solved in the present invention is to overcome seal wire of the prior art, bracket conveyer in gastral cavityIt is interior to distort, lack enough support forces, the defect of operation inconvenience is caused, is easy to seal wire and bracket conveyer to exist so as to provide one kindStomach intracavitary is moved, and enough supports can be provided for it, while the support damaged will not be caused to insert with support conduit to enteron aisle.
Therefore, technical scheme is inserted there is provided a kind of support uses support conduit, including：
Flexible conduit, inside forms a cavity, including the Part I and Part II being intervally installed, and describedPart I is different with the hardness of Part II, forms streamline guide portion in the upstream end of the flexible conduit, is used forThe insertion of the flexible conduit is guided, the tail end of the flexible conduit forms a bulb, the entrance for guide support；
Seal wire, is inserted in the cavity；
Injection head, is arranged on the one end of the flexible conduit away from the guide portion.
Described support is inserted with conduit is supported, and the hardness of the Part I is more than the hardness of the Part II, andThe Part I is set close to the guide portion.
Described support is inserted with support conduit, length 1~2cm of the length less than Part II of the Part I.
Described support is inserted with conduit is supported, and the flexible conduit is provided with for marking close to one end of the guide portionKnow the radiopaque mark of the flexible conduit insertion position.
Described support is inserted with conduit is supported, and the radiopaque Marking ring is located on the flexible conduit.
Described support is inserted with conduit is supported, and the radiopaque is marked labeled as tantalum.
Described support is inserted with conduit is supported, and the material of the Part I is polyamide, the material of the Part IIMatter is polytetrafluoroethylene (PTFE).
Described support is inserted with conduit is supported, and the material of the seal wire is stainless steel or Ti-Ni marmem.
Technical solution of the present invention, has the following advantages that：
1. the support that the present invention is provided is inserted with support conduit, flexible conduit include the Part I that is intervally installed andPart II, and Part I is different with the hardness of Part II, can be by with certain support strength so in operationFlexible conduit is inserted into the patient together with seal wire, because flexible conduit includes the different two parts of spaced, hardness,Therefore taken into account flexible and support strength so that flexible conduit both can smoothly reach Stomach duodenum or more distal end, again will notEnteron aisle is damaged during walking.Streamline guide portion is formed in the upstream end of flexible conduit, can preferably guide softProperty conduit insertion, reduce the resistance walked.The tail end of flexible conduit forms a bulb, has for being guided in the starting stageThere is certain rigid support smoothly to enter inside cavity.
2. the support that the present invention is provided is inserted with conduit is supported, the hardness of Part I is more than the hardness of Part II, andPart I is set close to guide portion, and this is due to that flexible conduit can run into certain stop during walking, and front end is hardThe larger material of degree, is easy to smoothly walk forward.
3. the support that the present invention is provided is inserted with support conduit, the length of Part I be less than the length 1 of Part II~2cm, the i.e. length of hardness major part is shorter, and the length of hardness smaller portions is then longer, is ensureing support strength, Ke YiOn the premise of smoothly being walked in patient's body, the infringement to enteron aisle is reduced as far as possible, it is easy to use.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior artThe accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, in describing belowAccompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paidPut, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 inserts the schematic diagram with support conduit for the support that the present invention is provided.
Description of reference numerals：
1- flexible conduit；2- guide portions；3- seal wires；4- injection heads；5- radiopaques are marked；6- bulbs；11- cavitys；12- Part I；13- Part II.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementationExample is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skillThe every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each otherIt can just be combined with each other into conflict.
Support as shown in Figure 1 inserts a kind of embodiment with support conduit, and the support conduit is mainly used inThe patient of the obstruction of Stomach duodenum tube chamber and gastrointestinal anastomosis tumor recurrence caused by malignant tumour infiltration, compressing, including flexibilityConduit 1, with certain flexibility and bending degree, can arbitrarily be walked in enteron aisle, without causing damage to it；Flexible conduitA cavity 11, including the Part I 12 and Part II 13 being intervally installed, and the Part I 12 are formed inside 1Different with the hardness of Part II 13, i.e., two sections of closest Part I 12 are spaced apart by one section of Part II 13 to be set,Two sections of closest Part II 13 are spaced apart by one section of Part I 12 and set, and so whole flexible conduit 1 can be keptCertain flexibility, and because the setting of hardness upper section can provide certain support strength and walk power.DescribedThe upstream end of flexible conduit 1 forms streamline guide portion 2, the insertion for guiding the flexible conduit 1.Streamlined directedThe surface in portion 2 is an arc-shaped transitional surface, can reduce resistance when flexible conduit 1 is walked, can avoid to the full extent to intestines againThe damage in road.The tail end of the flexible conduit 1 forms a bulb 6, and for the entrance of guide support, this is due to that flexibility is ledThe flexibility of pipe 1 is unfavorable for that there is certain rigid support smoothly to enter in initial position in cavity 11, and the setting of bulb 6 is thenSolve this problem well, and due to the material of flexible conduit 1, support by after bulb 6 under the guiding of seal wire 3Precalculated position can smoothly be reached.Seal wire 3, is inserted in the cavity 11, can smoothly be entered under the guiding of flexible conduit 1 and be suffered fromIn person's body, and the guide after precalculated position is reached as stenter to implant, the other end of seal wire 3 extends the chamber of flexible conduit 1Body 11, facilitates the installation of support.The material of the seal wire 3 is stainless steel or Ti-Ni marmem.Injection head 4, is arranged onThe one end of the flexible conduit 1 away from the guide portion 2.Injection head 4 is used for when flexible conduit 1 is inserted into the patient, Xiang RouProperty conduit 1 in the injection medicine such as contrast agent.
The hardness of the Part I 12 is more than the hardness of the Part II 13, and the Part I 12 is close to describedGuide portion 2 is set.The material of the Part I 12 is polyamide, and the material of the Part II 13 is polytetrafluoroethylene (PTFE).DrawThe material for leading portion 2 is and the identical polyamide of Part I 12 that such guide portion 2 can just pass through various inside enteron aisleStop, reach Stomach duodenum or more distal end.Flexible conduit 1 is set to the different two parts of hardness and is intervally arranged, relative to oneThe conduit that part hardness is big, another part hardness is small, the either segment of the flexible conduit 1 of the present embodiment be respectively provided with certain flexibility andIntensity, which is not in that flexibility is poor, influences the extreme cases such as walking in enteron aisle, or the higher easy damaged enteron aisle of hardness.
The length of flexible conduit is generally 1.6~2.0m, and internal diameter is 21~27mm, and external diameter is 27~33mm.Described firstThe length of part 12 is less than 1~2cm of length of Part II 13.The length of the increase less Part II 13 of hardness can increaseThe flexibility of flexible conduit 1, it is to avoid because integral hardness is larger, is unfavorable in walking inside enteron aisle, or even infringement enteron aisleWall.
The flexible conduit 1 is provided with for identifying the insertion position of flexible conduit 1 not close to one end of the guide portion 2Transmit wire tag 5.The ring of radiopaque mark 5 is located on the flexible conduit 1, and width is 1cm or so.The radiopaqueMark 5 marks for tantalum, tantalum mark not radioparent, therefore show under fluoroscopy, to identify the insertion position of flexible conduit 1.Once doctor observes that the guide portion 2 of flexible conduit 1 has arrived at precalculated position under fluoroscopy, then it can be implanted into along seal wire 3Support, completes operation.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.It is rightFor those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change orChange.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out orAmong changing still in the protection domain of the invention.