CN101612432A - The conveying of intravascular distal protector and recovery conduit - Google Patents
The conveying of intravascular distal protector and recovery conduit Download PDFInfo
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- CN101612432A CN101612432A CN200910108589A CN200910108589A CN101612432A CN 101612432 A CN101612432 A CN 101612432A CN 200910108589 A CN200910108589 A CN 200910108589A CN 200910108589 A CN200910108589 A CN 200910108589A CN 101612432 A CN101612432 A CN 101612432A
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Abstract
The invention discloses a kind of conveying of intravascular distal protector and reclaim conduit, the technical problem that solve is to realize pushing and regaining safely, fast distal protector in the operation process.Coaxial being arranged in the far-end outer tube of pipe in the far-end of the present invention, carry push rod to insert in far-end outer tube and the far-end between the pipe from near-end, pipe is linking together from distal-most end a distance with the far-end outer tube in the far-end, pipe is welded together and forms side opening with the far-end outer tube in the proximal end in the far-end, side opening with apart from distal end 250-300mm.The present invention compared with prior art; on delivery conduit and recovery conduit, have side opening; when the doctor operates; no matter send into or the recovery distal protection device; the distal protection device conducting wire pole all passes from side opening, pushes and regains distal protector and all can realize easily and fast, can be used for littler vascular lesion; enlarged application, especially in cerebrovascular interventional procedure field in the vascular procedure field.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, the particularly a kind of conveying of the distal protection device when being used for interventional therapy angiostenosis or other and may causing the operation of distal vessels thromboembolism and the medical catheter of recovery.
Background technology
At present, the treatment angiostenosis is used interventional method more, as balloon expandable, rotary-cut, get thrombosis, support implantation etc., can the fragmentation of speckle and blood clot take place and come off the generation embolus in operation process.These emboluses can be taken away by blood flow, along the end of blood flow direction intravasation (far) end, stop up the distal vessels system, stop up arterial blood and enter brain, heart or other vitals, and this thromboembolism can cause cerebral infarction, myocardial infarction, pulmonary infarction even death.In order to prevent distal embolization, people's specialized designs the mechanical protection protection unit, implement to place before the operation of percutaneous intervene operation, this protector.As shown in Figure 1, Chinese patent ZL200510033590.9 and ZL200610157403.2 are exactly this class intravascular distal protector, are used for collecting a kind of medical apparatus and instruments of solid particles such as the speckle that comes off in the operation process, thrombosis.Before implementing intervene operation, earlier distal protection device is delivered to far-end above diseased region; the vasotropic ends of solid particle flows such as the speckle that comes off in the prevention operation process, thrombosis; protect terminal blood vessel not blocked; after operation finishes, by distal protection device or additional thrombosis pumping equipment with outside the embolus lead body of catching.In the therapeutic process that the distal protection device percutaneous is got involved; the conduit of prior art all inserts from near-end; conduit length is at least 1200mm; require more than the long 2600mm of conducting wire pole of distal protection device; require two people operation; the surgical doctor operation is loaded down with trivial details; when sending into recovery conduit recovery distal protection device; because reclaiming catheter diameter and distal protection device conducting wire pole external diameter has a long way to go; when striding across support; reclaim conduit meeting secundly and, cause the support displacement, produce serious postoperative complication the support promotion.
Summary of the invention
The purpose of this invention is to provide a kind of conveying of intravascular distal protector and reclaim conduit, the technical problem that solve is to realize pushing and regaining safely, fast distal protector in the operation process.
The present invention is by the following technical solutions: a kind of delivery conduit of intravascular distal protector; the delivery conduit of described intravascular distal protector is by the far-end outer tube; pipe and conveying push rod are formed in the far-end; coaxial being arranged in the far-end outer tube of pipe in the far-end; carry push rod to insert in far-end outer tube and the far-end between the pipe from near-end; pipe is linking together from distal-most end a distance with the far-end outer tube in the far-end; this distance is greater than the length of distal protector contraction state; pipe is welded together and forms a side opening with the far-end outer tube in the far-end in the proximal end; side opening communicates with the inner chamber of pipe in the far-end, and side opening is apart from distal end 250-300mm.
The material of far-end outer tube of the present invention is high density polyethylene (HDPE), nylon, polyurethanes, block polyamide or the composite that has inner polytetrafluoroethyllayer layer, its distal-most end periphery has the roentgenopaque first outer tube indicating, and PtIr, Au, Ta or W are adopted in the first outer tube indicating; Described far-end inner tube material is high density polyethylene (HDPE), has the nylon of inner polytetrafluoroethyllayer layer, polyurethanes or block polyamide composite that its distal-most end has thoroughly manages indicating in the X ray first, first interior pipe indicating employing PtIr, Au, Ta or the W.
Conveying push rod of the present invention is NiT i alloy or stainless steel tube, and its far-end is levigate or weld one section thinner NiTi alloy or stainless steel silk material, the linking together with carrying the push rod far-end of far-end outer tube.
A kind of recovery conduit of intravascular distal protector; pipe constitutes described recovery conduit in conduit outer tube and the recovery conduit by reclaiming; reclaiming the interior pipe of conduit is arranged in the recovery conduit outer tube; formation is slidingly matched; at distance distal end 250-300mm place, reclaim the interior pipe of conduit and have side opening with recovery conduit outer tube.
Recovery conduit outer tube of the present invention is made up of the pipe and first push rod in first outer tube, first; coaxial being arranged in first outer tube of pipe in first; first push rod is inserted between first outer tube and the first interior pipe from near-end; pipe is linking together from distal-most end a distance with first outer tube in first; this distance is greater than the length of distal protector contraction state; pipe is welded together and forms first side opening with first outer tube in first in the proximal end; first side opening communicates with the inner chamber of pipe in first, and first side opening is apart from distal end 250-300mm.
The material of first outer tube of the present invention is high density polyethylene (HDPE), nylon, polyurethanes, block polyamide or the composite that has inner polytetrafluoroethyllayer layer, its distal-most end periphery has the roentgenopaque second outer tube indicating, and PtIr, Au, Ta or W are adopted in the second outer tube indicating; Described first inner tube material is high density polyethylene (HDPE), has the nylon of inner polytetrafluoroethyllayer layer, polyurethanes or block polyamide composite that its distal-most end has thoroughly manages indicating in the X ray second, second interior pipe indicating employing PtIr, Au, Ta or the W.
Pipe is made up of pipe, second outer tube and second push rod in the head end, second in the recovery conduit of the present invention, coaxial being arranged in second outer tube of pipe in second, second push rod is inserted between the second interior pipe and second outer tube from near-end, described head end is a tubulose, its distal outer is taper, the far-end of pipe, second outer tube is connected with the near-end of head end in described second, the pipe and second outer tube are welded together and form second side opening in second in the proximal end, the inner chamber of pipe and head end communicates in second side opening and second, and second side opening is apart from the distal end 250-300mm that reclaims conduit.
The external diameter of head end of the present invention is bigger than the second outer external diameter of pipe.
Head end material of the present invention is for containing BaSO
4, Bi
2O
3Or the high density polyethylene (HDPE) of W, or have nylon, polyamine fat or the block polyamide of politef inner chamber; Described second outer tube material is high density polyethylene (HDPE), nylon, polyamine fat or block polyamide; Described second inner tube material is a high density polyethylene (HDPE), or has nylon, polyamine fat or the block polyamide composite of inner polytetrafluoroethyllayer layer.
Second push rod of the present invention is NiTi alloy or stainless steel tube, and its far-end is levigate or weld one section thinner NiTi alloy or stainless steel silk, and the thin part of second proximal outer tube and the second push rod far-end links together.
The present invention compared with prior art; on delivery conduit and recovery conduit, have side opening; side opening is apart from far-end 250-300mm; when the doctor operates; no matter send into or the recovery distal protection device; the distal protection device conducting wire pole all passes from side opening; pushing and regain distal protector all can be convenient; realize fast; the far-end that reclaims conduit is a tapering transition; behind implant frame, send into the recovery conduit along the distal protector conducting wire pole, the distal end taper transition can help to reclaim conduit and pass support smoothly and can not cause the support displacement; in addition; catheter proximal end is the superelastic nickel titanium alloy wire of 0.50-0.70mm, and thinner than common used conduit like this, the propelling movement ability is better; reclaiming between distal end of catheter and conducting wire pole is tapering transition; it is safer to stride across support, can be used for littler vascular lesion, or littler to patient's damage; enlarged application, especially in cerebrovascular interventional procedure field in the vascular procedure field.
Description of drawings
Fig. 1 is the blood vessel distal protector structure chart of prior art.
Fig. 2 is a delivery conduit structural representation of the present invention.
Fig. 3 is a super bullet nitinol alloy wire processing of the present invention back sketch map.
Fig. 4 is a recovery conduit outer tube sketch map of the present invention.
Fig. 5 is a pipe sketch map in the recovery conduit of the present invention.
Fig. 6 is a recovery conduit assembling sketch map of the present invention.
Fig. 7 is the sketch map before delivery conduit of the present invention discharges distal protector.
Fig. 8 is the sketch map after delivery conduit of the present invention discharges distal protector.
Fig. 9 is that blood vessel distal protector of the present invention is packed into and reclaimed sketch map before the conduit.
Figure 10 is that blood vessel distal protector of the present invention is packed into and reclaimed sketch map behind the conduit.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail.The conveying of intravascular distal protector of the present invention and recovery conduit; comprise delivery conduit, reclaim conduit; delivery conduit is used to help the doctor to carry out the arrangement of distal protector in blood vessel, reclaims conduit and is used for reclaiming blood vessel distal protector and filtering fragment and impurity.
As shown in Figure 1, distal protector comprises conducting wire pole 1, and conducting wire pole 1 far-end is connected with protection basket 2, and conducting wire pole 1 passes protection basket 2 two ends, forms with protection basket 2 to be slidingly connected, and conducting wire pole 1 end is provided with conductive filament head 3.Protection basket 2 is made up of filter screen 4, the indicating sleeve pipe 5 that is connected filter screen 4 two ends; the connecting line at middle part, protection basket 2 two ends is provided with an anchor point 6; anchor point 6 adopts the alloy of rustless steel, gold, platinum or platinum; be hollow bushing-like; be enclosed within back welding or other method on the conducting wire pole 1; be fixed on the conducting wire pole 1, be used for the position that limiting protecting basket 2 slides on conducting wire pole 1.Conducting wire pole 1 is stainless steel silk, NiTi silk, and external diameter is the 0.25-1.0 millimeter, and conventional with 0.35 millimeter or 0.46 millimeter, the paragraph header end external diameter that conducting wire pole 1 is positioned at basket 2 is the 0.1-0.35 millimeter; The length of conducting wire pole is 180-300cm.Conductive filament head 3 is very soft so that injured blood vessel not; the end with tapering is worn in employing at the head end of conducting wire pole 1; put rustless steel, platinum or golden spring-guide wire head then and constitute; the length of conductive filament head 3 is 1-5cm, so that the front end of distal protection device has better pliability and enters the more curved blood vessel of far-end.
As shown in Figure 2, delivery conduit of the present invention is made up of pipe 52 in far-end outer tube 51, the far-end and conveying push rod 53, and pipe 52 coaxial being arranged in the far-end outer tube 51 in the far-end are carried push rod 53 to insert in far-end outer tube 51 and the far-end from near-end and managed between 52.Far-end outer tube 51 materials are high density polyethylene, nylon, PE polyurethane, block polyamide PEBAX or the composite that has the polytetrafluoroethylene PTFE internal layer, its distal-most end periphery has the not first outer tube indicating 55 of Transmission X line, as PtIr, Au, Ta or W.The interior pipe of far-end 52 materials are HDPE, have nylon, PU or the PEBAX composite of PTFE internal layer that its distal-most end has pipe indicating 56 in the saturating X ray first, as PtIr, Au, Ta or W.Pipe 52 is linking together by welding or adhering method from distal-most end a distance with far-end outer tube 51 in the far-end, and this distance is greater than the length of distal protector contraction state, and distal protector is received in far-end outer tube 51 these sections during conveying.Pipe 52 is welded together in the proximal end to form with far-end outer tube 51 and contains the structure of carrying push rod 53 proximal parts in the far-end, and at distance proximal end one distance formation one side opening 54, side opening 54 is oval, be positioned at outer tube-surface, communicate with the inner chamber of pipe 52 in the far-end, form the guidewire lumen of delivery conduit together, side opening 54 is apart from distal end 250-300mm.As shown in Figure 3, carrying push rod 53 is NiTi alloy or stainless steel tube, and its far-end is levigate or weld one section thinner NiTi alloy or stainless steel silk material.Attenuating near far-ends with conveying push rod 53 of far-end outer tube 51 located to link together by welding or adhering method, and the far-end taper portion of push rod 53 is then inserted in the far-end outer tube 51 fully and striden across side opening 54.Far-end outer tube 51 internal diameter sizes are 0.6-1.0mm, and pipe 52 internal diameter sizes are 0.4-0.5mm in the far-end, and carrying push rod 53 outside dimensions is 0.5-0.7mm.
Recovery conduit of the present invention is by reclaiming the conduit outer tube and reclaiming that pipe constitutes in the conduit, reclaims in the conduit pipe and is arranged on to reclaim to form in the conduit outer tube and is slidingly matched, and at distance distal end 250-300mm place, reclaims that pipe has side opening with recovery conduit outer tube in the conduit.
As shown in Figure 4, recovery conduit outer tube of the present invention is identical on structure and material with delivery conduit, and size is big.Reclaim the conduit outer tube and form by first outer tube, 61, first interior pipe 62 and first push rod 63, first interior pipe 62 coaxial being arranged in first outer tube 61, first push rod 63 is inserted in first outer tube 61 and first from near-end and is managed between 62.First outer tube, 61 materials are high density polyethylene, nylon, PE polyurethane, PEBAX or the composite that has the PTFE internal layer, and its distal-most end periphery has the not second outer tube indicating 65 of Transmission X line, as PtIr, Au, Ta or W.First interior pipe 62 materials are HDPE, have nylon, PU or the PEBAX composite of PTFE internal layer that its distal-most end has pipe indicating 66 in the saturating X ray second, as PtIr, Au, Ta or W.Pipe 62 and first outer tube 61 is linking together by welding or adhering method from distal-most end a distance in first, and this distance is greater than the length of distal protector contraction state, and distal protector is received in first outer tube, 61 these sections during recovery.Pipe 62 and first outer tube 61 is welded together in the proximal end and forms the structure that contains first push rod, 63 proximal parts in first, and at distance proximal end one distance formation first side opening 64, first side opening 64 is oval, be positioned at outer tube-surface, communicate with the inner chamber of pipe 62 in first, form guidewire lumen, first side opening 64 is apart from distal end 250-300mm.First push rod 63 is NiTi alloy or stainless steel tube, and its far-end is levigate or weld one section thinner NiTi alloy or stainless steel silk material.Attenuating near far-end with first push rod 63 of first outer tube 61 located to link together by welding or adhering method, and the far-end taper portion of first push rod 63 is then inserted in the far-end outer tube 61 fully and striden across first side opening 64.The internal diameter size of first outer tube 61 is 1.0-1.5mm, and the internal diameter size of the first interior pipe 62 is 0.8-1.0mm, and the first conveying push rod, 63 outside dimensions are 0.5-0.7mm.
As shown in Figure 5, pipe is made up of head end 42, second interior pipe 43, second outer tube 41 and second push rod 45 in the recovery conduit of the present invention, second push rod 45 and first push rod 53 are identical, pipe 43 coaxial being arranged in second outer tube 41 in second, second push rod 45 is inserted in second from near-end and is managed between 43 and second outer tube 41.Head end 42 is a tubulose, and its distal outer is taper, and material is for containing BaSO
4, Bi
2O
3Or the HDPE of W, or have nylon, PU or the PEBAX of PTFE inner chamber, head end 42 under the irradiation of X-ray line as seen.Second outer tube, 41 materials are HDPE, nylon, PU or PEBAX.Pipe 43 materials are HDPE in second, or have nylon, PU or the PEBAX composite of PTFE internal layer.The far-end of pipe 43, second outer tube 41 is connected with the near-end of head end 42 in second.The external diameter of head end 42 is bigger than second outer tube, 41 external diameters, head end 42 sizes are littler by 0.0015 than the internal diameter of first outer tube 61 "-0.003 " (0.04-0.07mm), closely cooperate with the far-end outer tube 61 that reclaims the conduit outer tube, the internal diameter of second outer tube 41 is 0.4-0.5mm, external diameter is littler by 0.004 than the internal diameter of pipe 62 in first " (0.1mm) more than, conveniently in outer tube, slide.Pipe 43 and second outer tube 41 is welded together in the proximal end and forms the structure that contains the secondth push rod 45 proximal parts in second, and at distance proximal end one distance formation second side opening 44, second side opening 44 is oval, be positioned at second outer tube, 41 surfaces, communicate with the inner chamber of the second interior pipe 43 and head end 42, form the guidewire lumen that reclaims conduit, second side opening 44 is apart from the distal end 250-300mm that reclaims conduit.Second push rod 45 is NiTi alloy or stainless steel tube, and its far-end is levigate or weld one section thinner NiTi alloy or stainless steel silk.Attenuating near far-end with second push rod 45 of second outer tube 41 located to link together by welding or adhering method, and the far-end taper portion of push rod 45 is then inserted in the far-end outer tube 41 fully and striden across second side opening 44.
As shown in Figure 6, reclaim the catheter cartridge timing, need to satisfy first side opening 64 and overlap with second side opening 44.Second push rod 45 that reclaims pipe near-end in the conduit is inserted from reclaiming the conduit distal outer tube, second push rod 45 passes from the side opening that reclaims the conduit outer tube, tube head end 42 parts enter and reclaim the conduit outer tube in reclaiming conduit, the tapering part of head end 42 forms the distal end taper transition of reclaiming conduit outside reclaiming the conduit distal outer tube.
As shown in Figure 7; before delivery conduit discharges distal protector; the near-end of the distal protector conducting wire pole far-end from delivery conduit is inserted; pass from side opening; draw conducting wire pole to near-end again; the basket of distal protector is drawn in the delivery conduit fully, kept the conductive filament head of distal protector to be exposed to outside the delivery conduit.During operation distal protector and delivery conduit are made as a whole insertion blood vessel.
As shown in Figure 8, after distal protector and delivery conduit arrive surgery location, keep the conducting wire pole of distal protector motionless, draw back and send delivery conduit until withdrawing from fully, distal protector protection basket 2 discharges in delivery conduit, and opens automatically.
As shown in Figure 9; when reclaiming far-end along distal protector; the far-end that reclaims conduit is set on the conducting wire pole along distal protector conducting wire pole near-end; the conducting wire pole near-end is passed from the side opening that reclaims pipe in the conduit; push the recovery conduit along conducting wire pole to far-end, the head end cone point of pipe is near the near-end indicating sleeve pipe of distal protector in reclaiming conduit.
As shown in figure 10; to reclaim in the conduit pipe and distal protector, to do as a whole maintenance motionless; push recovery conduit outer tube to far-end; surpass distal protector far-end indicating sleeve pipe until reclaiming the indicating of conduit distal outer tube; distal protector is promptly taken in fully and is reclaimed in the conduit, again distal protector and recovery conduit is done as a whole withdrawing from.
When the doctor performs the operation, earlier guiding catheter is inserted the opening part of target vessel, promoting the circulation of blood pipe radiography, the diameter of measurement stenosis blood vessel is pressed distal protector and delivery conduit that blood vessel diameter is selected corresponding size; The near-end of the distal protector conducting wire pole far-end from delivery conduit is inserted, pass from side opening (thread eye), pull back conducting wire pole again, draw in the basket of distal protector in the delivery conduit fully, keep the conductive filament head of distal protector to be exposed to outside the delivery conduit, again distal protector and delivery conduit are done as a wholely to insert blood vessel, surpassed narrow far-end until the near-end indicating of distal protector through guiding catheter; Keep the conducting wire pole of distal protector motionless, the delivery conduit of drawing back, distal protector basket promptly discharge, open in delivery conduit, withdraw from delivery conduit external fully; Again foley's tube or support are delivered to narrow for carrying out balloon expandable or implant frame along the distal protector conducting wire pole, withdraw from foley's tube or bracket conveyer then; The cone point that reclaims conduit is set on the conducting wire pole along distal protector conducting wire pole near-end, and conducting wire pole passes from the side opening that reclaims pipe in the conduit, pushes to far-end along conducting wire pole and reclaims conduit, the near-end indicating until the tip of reclaiming conduit near distal protector; To reclaim in the conduit pipe and distal protector, to do as a whole maintenance motionless; push recovery conduit outer tube to far-end; surpass the indicating of distal protector far-end until reclaiming the distal end of catheter indicating; distal protector is promptly taken in fully and is reclaimed in the conduit, again distal protector and recovery conduit is done as a whole withdrawing from.Operation is finished.
Claims (10)
1. the delivery conduit of an intravascular distal protector; it is characterized in that: the delivery conduit of described intravascular distal protector is by far-end outer tube (51); pipe (52) and conveying push rod (53) are formed in the far-end; (52) are coaxial is arranged in the far-end outer tube (51) for pipe in the far-end; carrying push rod (53) to insert from near-end manages between (52) in far-end outer tube (51) and the far-end; pipe (52) is linking together from distal-most end a distance with far-end outer tube (51) in the far-end; this distance is greater than the length of distal protector contraction state; pipe (52) is welded together and forms a side opening (54) with far-end outer tube (51) in the far-end in the proximal end; side opening (54) communicates with the inner chamber of pipe (52) in the far-end, and side opening (54) is apart from distal end 250-300mm.
2. the delivery conduit of intravascular distal protector according to claim 1, it is characterized in that: the material of described far-end outer tube (51) is high density polyethylene (HDPE), nylon, polyurethanes, block polyamide or the composite that has inner polytetrafluoroethyllayer layer, its distal-most end periphery has the roentgenopaque first outer tube indicating (55), and PtIr, Au, Ta or W are adopted in the first outer tube indicating (55); Pipe (52) material is high density polyethylene (HDPE), has nylon, polyurethanes or a block polyamide composite of inner polytetrafluoroethyllayer layer in the described far-end, its distal-most end has pipe indicating (56) in the saturating X ray first, and PtIr, Au, Ta or W are adopted in the first interior pipe indicating (56).
3. the delivery conduit of intravascular distal protector according to claim 2; it is characterized in that: described conveying push rod (53) is NiTi alloy or stainless steel tube; its far-end is levigate or weld one section thinner NiTi alloy or stainless steel silk material, the linking together with carrying push rod (53) far-end of far-end outer tube (51).
4. the recovery conduit of an intravascular distal protector; it is characterized in that: pipe constitutes described recovery conduit in conduit outer tube and the recovery conduit by reclaiming; reclaiming the interior pipe of conduit is arranged in the recovery conduit outer tube; formation is slidingly matched; at distance distal end 250-300mm place, reclaim the interior pipe of conduit and have side opening with recovery conduit outer tube.
5. the recovery conduit of intravascular distal protector according to claim 4; it is characterized in that: described recovery conduit outer tube is by first outer tube (61); pipe (62) and first push rod (63) are formed in first; (62) are coaxial is arranged in first outer tube (61) for pipe in first; first push rod (63) is inserted from near-end and is managed between (62) in first outer tube (61) and first; pipe (62) is linking together from distal-most end a distance with first outer tube (61) in first; this distance is greater than the length of distal protector contraction state; pipe (62) is welded together and forms first side opening (64) with first outer tube (61) in first in the proximal end; the inner chamber of pipe (62) communicates in first side opening (64) and first, and first side opening (64) is apart from distal end 250-300mm.
6. the recovery conduit of intravascular distal protector according to claim 5, it is characterized in that: the material of described first outer tube (61) is high density polyethylene (HDPE), nylon, polyurethanes, block polyamide or the composite that has inner polytetrafluoroethyllayer layer, its distal-most end periphery has the roentgenopaque second outer tube indicating (65), and PtIr, Au, Ta or W are adopted in the second outer tube indicating (65); Pipe (62) material is high density polyethylene (HDPE), has nylon, polyurethanes or a block polyamide composite of inner polytetrafluoroethyllayer layer in described first, its distal-most end has pipe indicating (66) in the saturating X ray second, and PtIr, Au, Ta or W are adopted in the second interior pipe indicating (66).
7. the recovery conduit of intravascular distal protector according to claim 4; it is characterized in that: pipe is by head end (42) in the described recovery conduit; pipe (43) in second; second outer tube (41) and second push rod (45) are formed; (43) are coaxial is arranged in second outer tube (41) for pipe in second; second push rod (45) is inserted from near-end and is managed between (43) and second outer tube (41) in second; described head end (42) is a tubulose; its distal outer is taper; pipe (43) in described second; the far-end of second outer tube (41) is connected with the near-end of head end (42); pipe (43) and second outer tube (41) are welded together and form second side opening (44) in second in the proximal end; the inner chamber of pipe (43) and head end (42) communicates in second side opening (44) and second, and second side opening (44) is apart from the distal end 250-300mm that reclaims conduit.
8. the recovery conduit of intravascular distal protector according to claim 7, it is characterized in that: the external diameter of described head end (42) is bigger than second outer tube (41) external diameter.
9. the recovery conduit of intravascular distal protector according to claim 8, it is characterized in that: described head end (42) material is for containing BaSO
4, Bi
2O
3Or the high density polyethylene (HDPE) of W, or have nylon, polyamine fat or the block polyamide of politef inner chamber; Described second outer tube (41) material is high density polyethylene (HDPE), nylon, polyamine fat or block polyamide; Pipe (43) material is a high density polyethylene (HDPE) in described second, or has nylon, polyamine fat or the block polyamide composite of inner polytetrafluoroethyllayer layer.
10. the recovery conduit of intravascular distal protector according to claim 9; it is characterized in that: described second push rod (45) is NiTi alloy or stainless steel tube; its far-end is levigate or weld one section thinner NiTi alloy or stainless steel silk, and the thin part of second outer tube (41) near-end and second push rod (45) far-end links together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101085896A CN101612432B (en) | 2009-07-06 | 2009-07-06 | Transmitting and recycling pipeline of distal protector in blood vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101085896A CN101612432B (en) | 2009-07-06 | 2009-07-06 | Transmitting and recycling pipeline of distal protector in blood vessel |
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| CN101612432A true CN101612432A (en) | 2009-12-30 |
| CN101612432B CN101612432B (en) | 2012-01-04 |
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| CN2009101085896A Active CN101612432B (en) | 2009-07-06 | 2009-07-06 | Transmitting and recycling pipeline of distal protector in blood vessel |
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| CN103961782A (en) * | 2014-05-08 | 2014-08-06 | 中国人民解放军第三军医大学第一附属医院 | Novel thrombus-falling-off-resisting type central venous catheter |
| CN104548317A (en) * | 2015-01-20 | 2015-04-29 | 周玉杰 | Guiding catheter with shapeable inner core |
| WO2017067395A1 (en) * | 2015-10-23 | 2017-04-27 | 李雷 | Recycling system for embolism protection apparatus and embolism filter |
| CN107440764A (en) * | 2017-08-16 | 2017-12-08 | 北京赛铂医药科技有限公司 | A kind of conveying device of intravascular distal protector |
| CN108837277A (en) * | 2018-07-18 | 2018-11-20 | 董鹏 | Extend conduit |
| CN109310849A (en) * | 2016-08-10 | 2019-02-05 | 尼普洛株式会社 | Support conduit |
| CN113577501A (en) * | 2021-07-14 | 2021-11-02 | 上海心玮医疗科技股份有限公司 | Retraction-preventing catheter |
| CN113827369A (en) * | 2021-04-12 | 2021-12-24 | 聚辉医疗科技(深圳)有限公司 | Conveying device |
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