CN87217002U - Conch shaped and spiral ball shaped memory vasoembolism apparatus - Google Patents
Conch shaped and spiral ball shaped memory vasoembolism apparatus Download PDFInfo
- Publication number
- CN87217002U CN87217002U CN 87217002 CN87217002U CN87217002U CN 87217002 U CN87217002 U CN 87217002U CN 87217002 CN87217002 CN 87217002 CN 87217002 U CN87217002 U CN 87217002U CN 87217002 U CN87217002 U CN 87217002U
- Authority
- CN
- China
- Prior art keywords
- blood vessel
- memory
- breechblock
- millimeters
- spiral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a memory vasoembolism apparatus, witch is made by a spring niti-shaped memorial alloy silk of uniform caliber winding into the conch shape and the spiral ball shape of different specifications. The utility model has bidirectional memory effect and is in filamentary under the x-rays television and is led into the target vessel smoothly. The memory vasoembolism apparatus is converted into the conch shape and the spiral ball shape under the action of the blood temperature and the blood stream is blocked in time, accurately, firm, and effectively. The purpose of plugging the vessel is achieved. The utility model is free from the restriction of the caliber of the conduit pipe, the complication of back flow mistaking plugging, etc. The conch-shaped and spiral ball-shaped memory vasoembolism apparatus is suitable for plugging large caliber artery and the treatment of the arteriovenous malformation disease, etc.
Description
This utility model relates to medical apparatus and instruments.Particularly this utility model can successfully be imported target vessel, thromboembolism target vessel in time, effectively, firmly, accurately and safely, blocking blood flow.
Since nineteen sixty-eight Newton adopted transcatheter arterial em-bolization successfully to cure a routine spinal angioma, this technology constantly developed, and is widely used for treatment of diseases such as visceral hemorrhage, hemangioma, malignant tumor.Embolism materials is broadly divided into fluidity material and solid material.Main liquid material commonly used has: anhydrous alcohol, isobutyl-2-cyanoacrylate, 14-alkyl sodium sulfate, oneself blood clot or the like.Main solidity material commonly used has; Gelfoam, polyvinyl alcohol, can break away from capsule, silicone rubber microgranule, stainless shot, stainless steel spring circle or the like.Because the limitation of material itself, also exist importing at present, discharge, backflow and miss bolt, problem such as pipeization and biocompatibility again.If the bigger tremulous pulse of thromboembolism, as renal artery, be example with the suppository anhydrous alcohol, the mistake of then might backflowing bolt Mesenteric artery causes bowel necrosis, needs the emergency surgery operation life that gives emergency treatment to a patient.On effect of embolization, be subjected to hemodynamic effects such as blood flow speed, flow, blood pressure again, the while also is subjected to injection length, notes speed, injection rate, concentration and injects the influence of factors such as pressure.Technical difficulty is big, wayward.Use solid-state suppository and be subjected to the restriction of conduit bore more.As absorbable gelatin sponge particle: done greatly and then be difficult to inject and be discharged into target vessel, done little then to be difficult to control inject pressure, the mistake of backflowing bolt also is the complication of easily sending out.Gelfoam can be absorbed by body, has pipe problem again, is not Permanent Embolic Material.As for the silicone rubber particles that is not absorbed by body, stainless shot obviously is subjected to the restriction of conduit bore, is not the material of thromboembolism heavy caliber blood vessel.Someone thinks: as the embolization material of arteriovenous malformotion, requirement can provide nonvolatil thromboembolism, and its size is wanted accurately promptly will block the blood flow that enters pathological changes just, can not allow it enter venous side by pathological changes again.Also there is not this class desirable material at present.Comparatively speaking, the stainless steel spring circle then is better than materials such as anhydrous alcohol and gelfoam on thromboembolism heavy caliber blood vessel.The stainless steel spring circle is a spring-like of making the bore homogeneous with stainless steel silk, the big spring of reprocessing coiled bore homogeneous has fibre (Barth k, H etal:Chronic vascular reactions to steel coil occlusion devi-ces) AJR 1978 around assisting on it again; 131:455).Because its deformation quantity less than 0.5%, pliability is poor, and assisting on adding has fibre, in the process that imports target vessel, has increased the coefficient of friction in conduit, has increased the importing difficulty.The spring body length is big more, and coefficient of friction is also just big more, does not often reach required clinically length.Because pliability is poor, the damage target vessel causes that the complication of massive hemorrhage also has report.At present, every stainless steel spring circle price is 100 dollars, is worth expensive.
It is a kind of little at the conduit coefficient of internal friction that the purpose of this utility model is to provide, and not limited by catheter drive, and do not backflow mistake bolt and injured blood vessel not are during postscript, effectively, firmly, accurately, safely and nonvolatil memory-type blood vessel embolism device.
The purpose of this utility model reaches like this: the niti-shaped memorial alloy silk is made the wire tubular spring, turn to required Carnis Rapanae thomasianae or spiral sphere again on mould, make it have two-way memory effect through technologies such as heat treatments therebetween.Can solve following six problems like this: 1. under the low temperature, it is wire or wavy greatly, the very easy seal wire inner core that is inserted in.2. when importing to target vessel, under the effect of blood temperature, become Carnis Rapanae thomasianae shape or spiral sphere.The stainless steel spring circle does not then have above-mentioned peculiar two-way memory effect at 1.2.3. become Carnis Rapanae thomasianae or spiral sphere in blood vessel after, so every loop diameter is descending, relative closure blood vessel and stop that effectively the blood flow area increases, and stainless steel coil all is the diameter of homogeneous, does not have this feature.4. because Carnis Rapanae thomasianae shape or spiral sphere sealing blood vessels and stop that effectively the blood flow area increases relatively in blood vessel, other assists around fibre so needn't resemble the stainless steel spring circle.5. the niti-shaped memorial alloy silk is compared with the stainless steel silk of equivalent diameter, and its pliability than the big 1-2 of stainless steel silk does not doubly exist to puncture vascular problem.6. be transported in pipe in the target vessel process, its coefficient of friction is significantly less than the stainless steel spring circle.So, import length also than stainless steel spring circle freedom, more adapt to the needs of indivedual cases clinically.
Niti-shaped memorial alloy is light tight, is convenient to import, discharge under X-ray television and does the super blood vessel embolism that selects.
Niti-shaped memorial alloy has shape memory effect.So-called memory effect is meant that Nitinol has memory power to the geometry of self, and in memory, produces restoring force in the recovery of shape process, makes mechanical power.
Shape memory effect has two kinds, and the one, unidirectional memory effect that is: can be remembered the ability of high temperature austenite geometry.The 2nd, two-way memory effect that is: not only can be remembered the high temperature austenite geometry, and can also remember the geometry of low-temperature martensite.Except memory effect, Nitinol is nontoxic to human body, and histocompatibility is better than medical stainless steel.This utility model has made full use of the special performance of niti-shaped memorial alloy just.
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
Fig. 1 is the side view of this utility model Carnis Rapanae thomasianae shape memory blood vessel embolism device.Expansion card division 1, breechblock portion 2, spiral shell afterbody 3 and the breechblock gradient angle 4 of visible thromboembolism device among the figure.
Fig. 2 is the front view of this utility model Carnis Rapanae thomasianae shape memory blood vessel embolism device.Outpoured among the figure and expanded card division external diameter 5 and see by expanding the difference one diameter formed relative closure state of card division 1 to the breechblock portion 2 the spiral shell afterbody 3.
Fig. 3 is the side view of the spherical memory of this utility model spiral blood vessel embolism device.Outpoured expansion card division 1 among the figure, breechblock portion 2, breechblock gradient angle 4 and spiral ball long 6.
Fig. 4 is the front view of the spherical memory of this utility model spiral blood vessel embolism device.Outpoured the formed relative closure state of different-diameter that expands card division external diameter 5 and see spiral ball long 6 among the figure, its density is for 2 times of Carnis Rapanae thomasianae shape memory blood vessel embolism device, and is undoubtedly, more suitable aspect thromboembolism heavy caliber blood vessel and hemangioma.
Fig. 5 and Fig. 6 show the straight line that this utility model memory-type blood vessel embolism device presented at the low-temperature martensite phase time or the tubular spring body of big wave-like, have outpoured spring external diameter 7 among the figure.
According to interrelated data, the hypogastric equal external diameter of human body is the 6.97-7.29 millimeter; Arteriorenal equal external diameter is 7.7 millimeters; The equal external diameter of arteria linenalis is 6.5 millimeters; The equal external diameter of proper hepatic artery is 5.83 millimeters; The equal external diameter of femoral artery is 11. 78 millimeters. The object of blood vessel embolism is mainly artery. Human body blood Wen Wendu mainly fluctuates between 35-38.5 degree centigrade. Therefore, the recovery of shape temperature with conch shape or the spherical memory of spiral vessel embolism device fixes on 30-40 degree Celsius. Be lower than 8% in order to control deformation quantity, obtain 100% recovery of shape and mechanical power, earlier nickel-titanium alloy material is pulled into the silk material of 0.15-0.3 mm dia, turn to sleeve, external diameter is a 0.8-1.5 millimeter. Then, turn to conch shape or spiral sphere at mould, make it have two-way memory effect through technologies such as heat treatments again. This memory-type vessel embolism device is made up of the expansion card division 1 of being fixed in target vessel, breechblock section 2 and spiral shell afterbody 3. Has breechblock gradient angle 4 between the bus of breechblock section 2 and the breechblock section symmetry axis.
As a kind of embodiment, it is Carnis Rapanae thomasianae shape memory blood vessel embolism device, the niti-shaped memorial alloy filament diameter is the 0.15-0.2 millimeter, sleeve external diameter 7 is the 0.8-1.0 millimeter, the length that expands card division 1 is the 1.6-4.0 millimeter, and expanding card division external diameter 5 is the 3-10 millimeter, and breechblock gradient angle 4 is the 12-40 degree, breechblock portion 2 length are the 8-30 millimeter, and spiral shell afterbody 3 length are 2 millimeters.
As another kind of embodiment, i.e. what the spherical memory of spiral blood vessel embolism device was two Carnis Rapanae thomasianae shapes in fact at the heavy caliber place is involutory.Its Nitinol filament diameter is the 0.2-0.3 millimeter, and sleeve external diameter 7 is the 1.0-1.5 millimeter, and the length that expands card division 1 is the 3-8 millimeter, and expanding card division external diameter 5 is the 4-18 millimeter, and breechblock gradient angle 4 is the 12--40 degree, and spiral spheroid long 6 is the 15-70 millimeter.Undoubtedly, it is at for Carnis Rapanae thomasianae shape memory blood vessel embolism device embodiment 2 times of endovascular relative closure state and the area that stops blood flow.
The lead-in mode of memory-type blood vessel embolism device is the lead-in mode of stainless steel spring circle substantially roughly the same.
The utility model has following advantage and good effect:
1. little at the conduit coefficient of internal friction, not limited by pipe aperture, have two-way memory effect, import, it is convenient to be discharged into target vessel. Can select according to clinical needs conch shape or the spherical memory of the spiral vessel embolism device of different size.
2. histocompatbility is better than stainless steel spring circle and fibre.
3. pliability is greater than the stainless steel spring circle, do not have the injured blood vessel bleeding problems of breaking, and also do not have the complication such as the mistake bolt that backflows of fluidity suppository, more do not have again pipe problem.
4. applied range relates to inside and outside, woman, secretes and the field such as orthopaedics, and every disease that needs embolotherapy all can adopt the utility model.
5. opened up new treatment approach for the treatment of the diseases such as arteriovenous malformation that are difficult to capture.
6. because this utility model is applicable to thromboembolism heavy caliber blood vessel, also have very big social benefit and economic benefit.As treat the fracture of pelvis massive hemorrhage, main measure at present is: (1) fluid infusion of transfusing blood in a large number; (2) hypogastric artery ligation; (3) internal iliac artery thromboembolism.Some cases with severe is unconditionally implemented hypogastric artery ligation, and existing suppository still exists different problems at thromboembolism heavy caliber blood vessel, influences effect of embolization.So patient's existence can only rely on a large amount of blood transfusion fluid infusion.The need that have blood transfusion milliliters up to ten thousand, dying from of having are lost blood or are died from the various various complication that cause therefrom.If use this utility model, then in control over bleeding, save blood, have great significance on the raising survival rate.Gynecological, urology department and orthopaedics pelvic cavity sacrum portion tumor treatment are used this utility model thromboembolism internal iliac artery before the art for another example, and when ocal resection, obviously minimizing is hemorrhage, saves the blood source so.Today that this is quite nervous in the blood source, very big social benefit and economic benefit are arranged.
7. enrich in China's nickel, titanium elements source, and the domestic production self-control is secure on the product.Stainless steel spring circle that needn't the import poor performance is saved foreign exchange.
Claims (3)
1, a kind of is the blood vessel embolism device of basic shape with sleeve, it is characterized in that:
The described blood vessel embolism device of a profile is Carnis Rapanae thomasianae shape or spiral sphere, and it is by the expansion card division 1 of blocking target vessel, and breechblock portion 2 and spiral shell afterbody 3 are formed, and have breechblock gradient angle 4 between the bus of breechblock portion 2 and the breechblock portion axis of symmetry;
The described blood vessel embolism device of b is that niti-shaped memorial alloy silk material is made, and silk material diameter is 0.15～0.3 millimeter;
The deformation direction of the described blood vessel embolism device of c is a two-way memory effect, and the regressive phase transition temperature of form is controlled at 30～40 degree Celsius;
2, according to claim 1 described memory-type blood vessel embolism device, the length that it is characterized in that the expansion card division 1 of described Carnis Rapanae thomasianae shape blood vessel embolism device is 1.6～4.0 millimeters, expanding card external diameter 5 is 3～10 millimeters, breechblock gradient angle 4 is 12～40 degree, breechblock portion 2 length are 8～30 millimeters, and spiral shell afterbody 3 length are 2 millimeters;
3, according to claim 1 described memory-type blood vessel embolism device, the length that it is characterized in that the expansion card division 1 of the spherical blood vessel embolism device of described spiral is 3～8 millimeters, expanding card division external diameter 5 is 4～18 millimeters, and breechblock gradient angle 4 is 12～40 degree, and spiral spheroid long 6 is 15～70 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87217002 CN87217002U (en) | 1987-12-30 | 1987-12-30 | Conch shaped and spiral ball shaped memory vasoembolism apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87217002 CN87217002U (en) | 1987-12-30 | 1987-12-30 | Conch shaped and spiral ball shaped memory vasoembolism apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87217002U true CN87217002U (en) | 1988-11-16 |
Family
ID=4830848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87217002 Expired - Lifetime CN87217002U (en) | 1987-12-30 | 1987-12-30 | Conch shaped and spiral ball shaped memory vasoembolism apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87217002U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1330387C (en) * | 2005-02-07 | 2007-08-08 | 武汉理工大学 | Magnetic combine powder type vessel embolizing material |
| CN100457197C (en) * | 2007-03-07 | 2009-02-04 | 中国人民解放军第二军医大学 | Adjustable artificial aortic arch transplant |
| CN105307596A (en) * | 2013-03-12 | 2016-02-03 | Pfm医疗有限公司 | Vascular occlusion device configured for infants |
| CN114711955A (en) * | 2022-05-11 | 2022-07-08 | 上海安通医疗科技有限公司 | Electric control ablation catheter for radial artery |
-
1987
- 1987-12-30 CN CN 87217002 patent/CN87217002U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1330387C (en) * | 2005-02-07 | 2007-08-08 | 武汉理工大学 | Magnetic combine powder type vessel embolizing material |
| CN100457197C (en) * | 2007-03-07 | 2009-02-04 | 中国人民解放军第二军医大学 | Adjustable artificial aortic arch transplant |
| CN105307596A (en) * | 2013-03-12 | 2016-02-03 | Pfm医疗有限公司 | Vascular occlusion device configured for infants |
| CN114711955A (en) * | 2022-05-11 | 2022-07-08 | 上海安通医疗科技有限公司 | Electric control ablation catheter for radial artery |
| CN114711955B (en) * | 2022-05-11 | 2022-11-01 | 上海安通医疗科技有限公司 | Electric control ablation catheter for radial artery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104352260B (en) | Left atrial appendage occlusion system | |
| CN104352261B (en) | Occluder for left auricle | |
| CN102302377B (en) | Mesh tubular spring for embolism and preparation method thereof | |
| WO2012171478A1 (en) | Liquid embolic materials based on collagens and preparation method thereof | |
| CN107374688A (en) | Plugging device in a kind of tube chamber | |
| CN106068107A (en) | Embolization device, apparatus for thromboembolism target vessel position and method thereof | |
| Comby et al. | Endovascular use of cyanoacrylate-lipiodol mixture for peripheral embolization: Properties, techniques, pitfalls, and applications | |
| CN87217002U (en) | Conch shaped and spiral ball shaped memory vasoembolism apparatus | |
| CN206333945U (en) | A kind of bidirectional protective takes bolt device | |
| Zhang et al. | Percutaneous mechanical thrombectomy treatment of acute superior mesenteric artery embolism | |
| Horn et al. | Management of groin pseudoaneurysms: Indications and outcomes for thrombin injection vs. surgical treatment | |
| CN103126973B (en) | Sugar water gel liquid emboliaztion agent for hemangioma cure and preparation method thereof | |
| CN114887109B (en) | Self-temperature-controlled magnetic-response drug release embolism microsphere with CT/MR developing function and preparation method thereof | |
| CN207520180U (en) | One kind takes bolt stent and thrombus withdrawing device | |
| Zweers et al. | Iliac artery-ureteral fistula associated with an indwelling ureteral stent | |
| Ao et al. | First case in China: Onyx for bronchial artery embolization in treatment of refractory massive hemoptysis in one case | |
| CN201814605U (en) | Asymmetric double-plate-type left auricle occluder | |
| CN201143213Y (en) | Vascular plug for plugging unconventionality vascular passageway | |
| CN209474728U (en) | One kind taking bolt bracket and takes pin device | |
| CN209450597U (en) | The plugging device of intracranial aneurysm | |
| CN106859723A (en) | A kind of intravascular intervention medical use degradable in vivo turn | |
| Chang et al. | Pressure compression of the access tract for tubeless percutaneous nephrolithotomy | |
| Honda et al. | Ruptured pseudoaneurysm of the superficial temporal artery after craniotomy | |
| CN110236629A (en) | The intravascular non-acute occlusion of one kind and auxiliary blood flow reconstruction device | |
| CN2526019Y (en) | Blocking apparatus for patent arterial duct and arteriovenous fistula |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C61 | Other related matters missed announcement to grant the patent right of following patent application on september 13, 1989 | ||
| OR01 | Other related matters | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |