The Clinical Research Of The Home-made ZXL-type Vena Cava Filter

PurposeThe incidence and mortality rate of pulmonary embolism (PE) are high, a 82% sufferer of PE in the foreign cultural heritage report can discover to have the deep vein thrombosis(DVT).How keep deep vein thrombosis to shed off enter the lung artery continuously is a key that prevent from the PE. The inferior vena cava filter(IVCF) placing is the more valid method to prevent pulmonary embolism, can make occurrence rate that be bolted to shed off to result in PE by DVT of legs been descended to 0.9%-5% by 60%-70%. Not only the IVCF placing is an important method that prevent from the PE, but also is safe assurance to the dissolving thrombus, the machine clearance and the vein stent. But, at present most the IVCF is import and expensively for the price,majority are permanent type. Therefore, the development and researches of the IVCF need to carry on urgently, and the national product of the IVCF will realize.The objective of this research is observation the sufferers' circumstance of long period home-made retrievable ZXL-type vena cava filter for the prevention of pulmonary embolism 1, and provide the basis for the clinical application.Materials and MethodsAccording to select standard, expel standard and examine standard , 30 cases of deep vein thrombosis with/ without pulmonary embolism are choiced. 30 cases are divided into and control team randomly, 15 cases of test team are placing home-made retrievable ZXL-type vena cava filters, 15 cases of control team are placing Cordis Trap ease filters which are made in USA. Test team has 6 man,9 of woman, the average age 60.13 years old, the left legs DVT is 8 example, the right legs DVT 2 example, a legs DVT 5 example, 2 example PE before placing IVCF, The filter was implanted via the right jugular vein in 2 patients, the right femoral vein in 8 patients, the left femoral vein in 5 patients, The domestic specification 24 mms contain 5, the 26 mms contain 8, the 28 mms contain 2. Control team has 10men,5 of woman, the average age 57.33 years old, the left legs DVT is 10 example, the right legs DVT 3 example, a legs DVT 2 example, 2 example PE before placing IVCF, The filter was implanted via the right jugular vein in 1 patients, the right femoral vein in 10 patients, the left femoral vein in 4 patients, All are a diameter 26 mm filter. All filters are placed into inferior vena cava under kidney vein openings the following.The standard dissolves to bolt and the anti-cruor treatment, with visit whether have the symptom of pulmonary embolism, including cough, chest pain, dyspnea, etc.If symptom appear, immediately contrast CT is checked. After 6 months shoot the belly even slice and to inferior vena cava strengthen the CT, whether the observation filter releases smoothly or not, whether colander open, has to have no the filter to move the , filter to tilt to one side(>15°) completely or not, the filter split, bolts to fill after the hair lung artery and descends th vein blood to bolt the formation, the vein to bore hole etc.Adopt the examination of X~2 to carry on statistics to learn the analysis towards experimenting set and various index signs of matched control to prognosticate the result distinguish, make use of the Fisher precision all the rate method compute each be worth from the P, think the P<0.05 have difference statistic.ResultsAll cases of test team and control team release the filters smoothly, the filters opens all and completely, all the filters moveing did not take place, non filter tilt to one side(>15°), split, bolts to fill after the hair lung artery, the vein bore hole, both did not statistics to learn the difference.Experiment set next the inferior vena cava blood bolts to become 1, for the temple neck cancer the sufferer takes place a inferior vena cava of right side to transfer, the tumor oppress with the result that the bottom vein colander transform, inferior vena cava inside did not build .The matched control is 1 the inferior vena cava filter inside it is thus clear that the small piece blood bolt, the P worth is 0.50.ConclusionThe implantation of the home-made ZX L-type vena cava filter is simple , the orientation is accurate , and the position of the filter can be regulated. It is a valuable option for clinical application because of its excellent stability and efficacy.