CN209221277U - The rotary drive interposing catheter for having perfusion functional - Google Patents
The rotary drive interposing catheter for having perfusion functional Download PDFInfo
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- CN209221277U CN209221277U CN201821672961.7U CN201821672961U CN209221277U CN 209221277 U CN209221277 U CN 209221277U CN 201821672961 U CN201821672961 U CN 201821672961U CN 209221277 U CN209221277 U CN 209221277U
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Abstract
The utility model relates to a kind of rotary drive interposing catheters for having perfusion functional, including rotation function part, fixed package casing, connection driving flexible shaft, distal end stiff shaft, power source, the both ends of connection driving flexible shaft are connected with distal end stiff shaft and power source respectively, the rigid axis connection rotation function part in distal end, the rotation torque that power source generates passes to rotation function part via connection driving flexible shaft, distal end stiff shaft, it is characterized in that, further including distal end current-limiting components, multi-lumen tube and perfusion fluid supply unit.Current-limiting components in blood vessel side pass through the premise clearance fit with distal end stiff shaft, and the liquid conveying of priming line, the controllable perfusion liquid proportional external into human body and outflow of the utility model is up to 1~300, both it ensure that blood will not flow backward and caused failure into conduit, it is unlikely to for the liquid largely containing wear particle to be discharged into human body again simultaneously, increases biological risks and organ burden.
Description
Technical field
The utility model relates to the rotary drive conduits that one kind percutaneously intervenes, and belong to medical instruments field.
Background technique
The advantages such as blood vessel intervention operation restores fast because its wound is small, and curative effect is obvious, have become modern medicine can not or
One of scarce treatment and diagnostic mode.And with the promotion of science and technology and manufacturing capacity, Vascular interventional devices are towards small-sized
Change, the minimally invasiveization even direction of noninvasiveization are improved and developed.
The position that medical instrument is used according to it, the form used, structure feature, period for the treatment of etc., there are many classification sides
Formula, wherein being divided into passive medical instrument and active medical instrument according to the difference of structure feature.Active medical instrument refer to it is any according to
By electric energy perhaps other energy rather than the energy that is directly generated by human body or gravity, the medical instrument of its function is played.And
The advantages of rotary drive intervention apparatus agrees with vessel anatomy again with its motion mode for doing work component is in active intervention medical treatment
Unique status is occupied in instrument.
Be applied to clinic at present includes: calcification by the intervention active medical instrument that electric energy or wind energy transformation are rotation function
Patch rotary rubbing device, ventricular assist device etc..Calcified plaque rotary rubbing device is mainly used in artery turnery cardia artery congee
Sample hardens lesion, and the origin cause of formation of atherosclerosis is the fatty inner membrance (subendothelial) for being constantly deposited in patient vessel.Initially accumulation
Fat it is relatively soft, over time, the athero- substance of artery rich in cholesterol stiffens into the Atherosclerosis of calcification
Change patch.Patch, which constantly becomes larger, causes effective blood flow cavity of blood vessel to attenuate, and this artery is athero- to limit the flowing of blood, leads
Cause the organ or tissue of blood vessel distal end that can not normally obtain blood supply and lesion.If lesion occurs in coronary artery, not right
It is handled, this narrow to cause angina pectoris, hypertension, myocardial infarction, apoplexy and similar conditions.Not for non-calcified or calcification
Serious lesion can be solved the problems, such as, lesion serious for calcification, branch using conventional balloon dilatation and stenting
Frame not can not can be expanded lesion by lesion or sacculus, led to operative failure, revolved at this time using calcified plaque
Mill apparatus can solve most problems, as United States Patent (USP) US 5360432 discloses a kind of such equipment comprising one
Coronary artery rotational atherectomy devices, the equipment include a kind of flexible, elongated drive shaft, and drive shaft is one with center cavity
Flexible shaft, distal end are the bistrique for being covered with the grain of rice size of grinding-material, its revolving speed is up to 120000 to 200000 when work
Rpm, bistrique of the surface with diamond coatings can grind the patch of calcification as the particle of micron order size, open-minded
After narrow blood vessel, then row stenting.
Heart-assist device is that a kind of draw blood by venous system or heart is pumped directly into arterial system, part or complete
Portion replaces the artificial mechanism device of ventricle acting.There are left ventricle auxiliary, right ventricle auxiliary and biventricular assist；With non-cutting time
Length be divided into again momentary auxiliary [within 2 weeks) and permanent two kinds of auxiliary.One kind as disclosed in patent CN201510976717
Percutaneous auxiliary blood pumping device, including drive module, control module and pump blood conduit, wherein drive module is located at leads with pump blood in vitro
Pipe is provided separately, and the distal end of drive module is connected by flexible transmission system with blood pump conduit, and proximal segment passes through signal wire and control
Molding block is connected.It is rotated by motor driven flexible transmission system with 10000 to 50000 rpms of revolving speed, is driven with this
Blood is pumped into arterial system from ventricle by impeller acting, and accessory heart completes blood conveying function.
Such active instrument includes high-speed rotary part, and the mechanostructural property of rotary drive determines: rotor with
There is relative motion between stator, if the cooperation of rotor and stator uses sealing structure, just certainly exists wear problem, sealing element
Friction can generate heat, while wearing and can generate particle, as the degree of wear increases, the gap between rotor and stator can increase
The problem of adding, and then leading to effective continuous working period；Rub the heat persistent accumulation heating instrument generated, high temperature easy damaged device
Official, and if excessive fines will lead to biosafety issues into human body.If the cooperation of rotor and stator is tied using gap
Structure, it is possible to which, there are risk of leakage, the air in instrument enters blood of human body and will cause embolism or blood and penetrate into instrument and causes
Instrument operation troubles, same clearance fit also has wear particle generation, and if excessive fines can still result in life into human body
Object safety issue.
The anatomical structure of human vas also determines, and the rotating drive shaft from external power source to internal acting component is inevitable
It cannot be whole rigidity, it is necessary to be that flexible just can guarantee that passing through tortuous blood vessel reaches diseased region with flexible.But it is high
Speed rotation connection driving flexible shaft will necessarily with the stator friction of outer layer, and this frictional force knee can because connection
It drives the bending stress of flexible shaft itself to act on and amplification sharply, heat and wear particle can be equally generated, due to transmission shaft
For length up to 0.9~1.5 meter, contact area is big, and when high speed rotation, the heat and particle of generation are much higher than the internal acting portion of distal end
Part, endanger more very, or even the risk for having wear and rupture that product failure is caused to fail.Common mechanical design solution is will to connect
Driving flexible shaft is immersed in liquid, plays the role of cooling and lubrication, even if in this way, the generation of particle and frictional heat still not
It can avoid.Therefore how to ensure that transmission shaft is effectively immersed in perfusion liquid, prevent from overheating；Controlling particle enters human body simultaneously
Amount is the work for having to complete that this type instrument meets safety, validity.CN201621106663.2 discloses one
The design of kind of Flexible Transmission is used as flexible drive shaft using metal knitted hank knotting, outer layer use metallic coil, macromolecule tubing or
Composite pipe is as sheath.Although it refers to fill liquid between flexible drive shaft and outer layer sheath in the claims,
It is not address how to guarantee that flexible drive shaft is substantially immersed in liquid, does not also solve how these liquid flow?
If it is static liquid, it is clear that the heat generated in gearing friction can not be taken away.If it is the liquid of movement, how to avoid soft
Property drive shaft friction generate particle enter human body?
And a kind of flexible drive design is disclosed in patent CN105682602, although it is referred to using bio-compatible
Property good oil refill between stator and axis, form sliding bearing, but can not equally solve having blood pressure and blood
In the case of, the Preserving problems of lubricating oil and longtime running temperature rise and excessive abrasion particle enter the risk of human body.
Summary of the invention
The purpose of this utility model is: a kind of rotary drive conduit is provided, in the case where meeting high speed, being used for a long time,
Ensure the risk that conduit does not generate overheat and abrasion particle enters human body.
In order to achieve the above object, there is provided a kind of rotation biographies for having perfusion functional for the technical solution of the utility model
Dynamic interposing catheter, including rotation function part, connection driving flexible shaft, distal end stiff shaft, power source, the two of connection driving flexible shaft
End is connected with distal end stiff shaft and power source respectively, the rigid axis connection rotation function part in distal end, the rotation torque that power source generates
Pass to rotation function part via connection driving flexible shaft, distal end stiff shaft, which is characterized in that further include distal end current-limiting components,
Fixation package casing, perfusion fluid supply unit and the multi-lumen tube of installation pedestal as distal end constriction, multi-lumen tube include 1 tunnel
It is driven center cavity pipeline and at least 1 road filling cavity pipeline, in which:
Connection driving flexible shaft is connected through transmission center cavity pipeline, fixed package casing with multi-lumen tube, provides a filling
Infuse the space of separating liquid；
Fluid supply unit is perfused and provides pressure by charge pump feed unit, distal end restriction is flowed to by filling cavity pipeline
Part, and it is divided into 2 tunnels under the hindrance function in gap between distal end current-limiting components and distal end stiff shaft in fixed package casing, it is few
The perfusion liquid of amount is the first via, is flowed into after flowing out fixed package casing by the gap of distal end current-limiting components and distal end stiff shaft
In human body；Remaining perfusion liquid is the second tunnel, is flowed into transmission center cavity pipeline, and liquid is perfused in transmission center cavity in the second tunnel
In pipeline with connect driving flexible shaft and carries out heat exchange and take the particle for wearing generation in vitro out of.
It preferably, further include devil liquor recovery unit, the second tunnel perfusion liquid of the transmission center cavity pipeline outflow flows into
In devil liquor recovery unit.
It preferably, further include the rotating mechanism being fixedly connected with the devil liquor recovery unit.
It preferably, further include internal proximal end current-limiting components, internal proximal end current-limiting components are matched with the distal end rigidity shaft clearance
It closes, the second tunnel perfusion liquid of fraction flows into described via the gap two between internal proximal end current-limiting components and distal end stiff shaft
Be driven center cavity pipeline in, and the radial dimension in the gap two be greater than or equal between distal end current-limiting components and distal end stiff shaft between
The radial dimension of gap.
It preferably, further include internal proximal end aerial drainage component, internal proximal end aerial drainage component is installed in fixed package casing, portion
There is the aperture more than or equal to 1 or more quantity on part, most second tunnel perfusion liquid, which is known from experience, flows into institute by these apertures
It states in transmission center cavity pipeline.
Preferably, the power source is by driving flexible shaft described in extracorporeal proximal end rigidity axis connection.
It preferably, further include extracorporeal proximal end current-limiting components, extracorporeal proximal end current-limiting components and the extracorporeal proximal end rigidity between centers
Gap cooperation, the second tunnel are perfused after transmission center cavity pipeline described in liquid discharge through by extracorporeal proximal end current-limiting components and extracorporeal proximal end rigidity
Gap three between axis flows into devil liquor recovery unit, and the radial dimension in the gap three is more than or equal to distal end current-limiting components and far
Hold the radial dimension in gap between stiff shaft.
Preferably, further include extracorporeal proximal end aerial drainage component or pressure valve, have on extracorporeal proximal end aerial drainage component more than or equal to 1
The aperture of the above quantity, the second tunnel perfusion liquid are divided at least two-way after flowing out the transmission center cavity pipeline, pass through all the way
The devil liquor recovery unit is flowed by the gap three, another way flows into described useless via extracorporeal proximal end aerial drainage component or pressure valve
Liquid recovery unit.
Preferably, including filling cavity pipeline described in 2 tunnels, the perfusion liquid overwhelming majority of the 1st road filling cavity pipeline pass through institute
The gap for stating distal end current-limiting components and distal end stiff shaft flows into human body, and the fraction perfusion liquid of the 1st road filling cavity pipeline passes through
Gap two between internal proximal end current-limiting components and distal end stiff shaft flows into transmission center cavity pipeline；2nd road filling cavity pipeline
Side of the proximal end current-limiting components outside human body, the perfusion liquid of the 2nd road filling cavity pipeline pass back into institute to remote outlet in vivo
Human body is flowed out after stating transmission center cavity pipeline.
Preferably, wearing layer is equipped on the inner wall of the transmission center cavity pipeline.
Preferably, the transmission center cavity pipeline and the filling cavity pipeline are independent pipeline or the transmission center
Lumen road is the different cavitys of same pipeline from the filling cavity pipeline.
Preferably, the external diametrical extent of the rotation function part is 2~8mm.
Preferably, the diameter range of the fixed package casing is 2~10mm.
Preferably, the cross section of connection driving flexible shaft is projected as central symmetry polygon or round, diameter projected's range
In 0.1~0.8mm.
Preferably, centre bore is provided in the middle part of the current-limiting components of distal end, the diameter range of centre bore is 0.5~2.6mm.
Preferably, the diameter range of the distal end stiff shaft is the 0.908 of the center-hole diameter size of distal end current-limiting components
~0.998 times.
Preferably, the liquid flow section area of the transmission center cavity pipeline is that the connection drives flexible shaft cross section
0.1~30 times of area.
The utility model has the advantages that
1) blood vessel side current-limiting components (i.e. distal end current-limiting components) by the premise clearance fit with distal end stiff shaft,
And the liquid of matching reflux cooling priming line conveys pressure drop, the controllable perfusion liquid external with outflow into human body of the present invention
Flow proportional not only ensure that blood will not flow backward into conduit up to 1~300, but also be unlikely to big quantity of fluid being discharged into human body,
Increase organ burden；
2) by the size design bigger relative to distal end current-limiting components and bigger in the current-limiting components by side outside human body
Clearance fit realize the cooling perfusion liquid flow of bigger reflux, ensure that connection driving flexible shaft it is cooling with take abrasion out of
The needs of grain, and generate enough pipe impedances simultaneously and the pressure in the package casing of distal end is made to be consistently higher than blood pressure, it protects
Card blood will not pour into conduit.
The specific structure of return line is selected generally according to flow-rate ratio, specific as follows:
When flow-rate ratio is lesser (general 1 times≤external flow/in vivo flow≤30 times), using adjusting connection driving
Flexible shaft controls flow-rate ratio with transmission center cavity pipeline clearance fit.
When flow-rate ratio is medium (general 5 times≤external flow/in vivo flow≤150 times), using aerial drainage component or
Pressure valve controls flow-rate ratio.
When flow-rate ratio is larger (general 1 times≤external flow/in vivo flow≤300 times), using No. 2 intrusion pipes
Road, and 1 distal end current-limiting components is used in distal end, 1 internal proximal end current-limiting components pours into human body pipeline and outflow people to realize
Body pipeline is mutually indepedent, can obtain bigger flow difference in this way to meet actual demand.
3) waste liquid of reflux is collected, ensure that using the devil liquor recovery unit that can rotate adjustment around conduit out of the human body
The neat and tidy in ward and hospital bed.
Detailed description of the invention
Figure 1A to Fig. 1 P is the cross-sectional view of the different structure of the multi-lumen tube in embodiment；
Fig. 2 is the structural schematic diagram of the rotary drive interposing catheter for having perfusion functional in embodiment 1；
Fig. 3 a is the structural schematic diagram of the rotary drive interposing catheter for having perfusion functional in embodiment 2；
Fig. 3 b is the partial enlargement diagram of Fig. 3 a；
Fig. 4 is the structural schematic diagram of the rotary drive interposing catheter for having perfusion functional in embodiment 3；
Fig. 5 is the structural schematic diagram of the rotary drive interposing catheter for having perfusion functional in embodiment 4；
Fig. 6 is the structural schematic diagram of the rotary drive interposing catheter for having perfusion functional in embodiment 5.
Specific embodiment
To be clearer and more comprehensible the utility model, hereby with preferred embodiment, and attached drawing is cooperated to be described in detail below.
For embodiment 1 to embodiment 4, multi-lumen tube 61 therein can using Figure 1B, Fig. 1 C, Fig. 1 E, Fig. 1 H,
Fig. 1 I, Fig. 1 K, Fig. 1 M, structure shown in Fig. 1 P, the multi-lumen tube 61 of the structure, which has, to be driven center cavity 68 all the way and is perfused all the way
Chamber 65 is also covered with antifriction metal (AFM) layer 67 on the inner wall of transmission center cavity 68.
For embodiment 5, multi-lumen tube 61 therein can using Figure 1A, Fig. 1 D, Fig. 1 F and Fig. 1 G, Fig. 1 J, Fig. 1 L,
Structure shown in Fig. 1 N, Fig. 1 O, the multi-lumen tube 61 of the structure and the difference of above-mentioned multi-lumen tube 61 are: have two-way filling cavity 65,
66。
Wherein Fig. 1 E, Fig. 1 F, Fig. 1 H, Fig. 1 K, Fig. 1 L transmission center cavity use the side for being similar to the outer loop-shaped of circular gear
Case, or such as Fig. 1 I, Fig. 1 K, Fig. 1 M, Fig. 1 P transmission center cavity use square central symmetry polygonal shape, both can be effective
Fixed wearing layer 67, and the cross-sectional area of transmission center cavity is increased, pipe impedance is reduced, the cooling perfusion liquid stream that flows back is increased
Amount.
Embodiment 1: regurgitant volume is controlled using connection driving flexible shaft and the clearance fit for being driven center cavity internal diameter
As shown in Fig. 2, the length of the multi-lumen tube 61 in the present embodiment is 1100mm, transmission 68 inner wall of center cavity has laid one
Layer wearing layer 67, wherein 67 internal diameter of wearing layer is 0.57mm.Rotation function part 41 can be the impeller for pumping blood, or be used for calcium
The surface for changing lesion processing is covered with the bistrique of diamond particles.65 internal diameter of filling cavity is 0.35mm, 65 entrance one end of filling cavity
Charge pump 57 is connected, exit end is close to distal end current-limiting components 52.Connection driving flexible shaft 55 outer diameter be 0.42mm, length with
68 length of transmission center cavity of multi-lumen tube 61 matches, connection driving 55 both ends of the flexible shaft switching with distal end stiff shaft respectively
Part 54 is connect with power source 56.The diameter of the centre bore of distal end current-limiting components 52 is 1.01mm, length 3.0mm, distal end rigidity
The diameter of axis 51 is 1.00mm, is connected by adapter 54 with driving 55 one end of flexible shaft is connect.Charge pump 57 is with per hour 16
Perfusion liquid in infusion bag 60 is fed into filling cavity 65 by the flow of~300ml/hr, and it is suitable to be adjusted according to the height of revolving speed
Irrigation flow, in the case where mean arterial pressure 80mmHg, wherein 2~60.0ml/hr flow into human body, 14~240ml conduct
Outside the coolant liquid outflow human body of connection driving flexible shaft 55, because of the difference of groundwater increment, variation range is for the flow-rate ratio of in vitro/in vivo
4.0~7.0 times；56 revolving speed of power source operates in 10000~50000 revs/min, and temperature rise is no more than 40 DEG C in operational process, even
The particle for connecing driving flexible shaft 55 and the friction generation of wearing layer 67 enters devil liquor recovery unit 58 or sedimentation with the cooling liquid stream that flows back
It is basic without flowing into human body in transmission center cavity 68.
Embodiment 2: increase return line impedance using internal proximal end constriction, and use internal proximal end aerial drainage component controls
Regurgitant volume
As shown in Fig. 3 a and Fig. 3 b, the length of the multi-lumen tube 61 in the present embodiment is 1200mm, wherein transmission center cavity 68
Inner wall has also laid one layer of wearing layer 67, and wherein 67 internal diameter of wearing layer is 0.8mm.65 internal diameter of filling cavity is 0.35mm, filling cavity
65 entrance one end connect charge pump 57, and exit end is between internal proximal end current-limiting components 53 and distal end current-limiting components 52.Even
Connecing driving 55 outer diameter of flexible shaft is 0.45mm, and 68 length of transmission center cavity of length and multi-lumen tube 61 matches, and connection driving is soft
Property 55 both ends of axis are connect with the adapter 54 of external power source 56 and distal end stiff shaft respectively.52 hole of distal end current-limiting components it is straight
Diameter is 1.00mm, length 2.0mm, and the diameter of internal 53 centre bore of proximal end current-limiting components is 1.00mm, length 2.0mm, far
The diameter for holding stiff shaft 51 is 0.99mm.Internal proximal end current-limiting components 53 share a distal end stiff shaft with distal end current-limiting components 52
51, wherein stiff shaft 51 distal end in distal end is connected with rotation function part 41, proximally by adapter 54 with connect driving flexible shaft
55 are connected, and using the inner ring close-fitting distal end stiff shaft 51 of bearing 63, guarantee concentricity when high speed rotation.It lets out internal proximal end
The aerial drainage bore dia of stream unit 62 is 0.1mm, length 2.0mm.Charge pump 57 is filled with the flow of 82~1260ml/hr per hour
Note, suitable irrigation flow is adjusted according to the height of revolving speed, in the case where mean arterial pressure 80mmHg, wherein 2~60ml/
Hr flows into human body, and 80~1200ml/hr flows out outside human body as the coolant liquid of connection driving flexible shaft, the flow of in vitro/in vivo
Than the difference because of groundwater increment, variation range is 20~40 times；56 revolving speed of power source operates in 10000~50000 revs/min, fortune
Temperature rise is no more than 40 DEG C during row, and the particle that connection driving flexible shaft 55 and the friction of antifriction metal (AFM) layer 67 generate is with reflux
Coolant liquid flows into devil liquor recovery unit 58 or is deposited in transmission center cavity 68, basic without flowing into human body.
Embodiment 3: increase return line impedance using extracorporeal proximal end constriction, and use extracorporeal proximal end aerial drainage component controls
Regurgitant volume
As shown in figure 4, the length of the multi-lumen tube 61 in the present embodiment is 1100mm, transmission 68 inner wall of center cavity has laid one
Layer wearing layer 67, wherein 67 internal diameter of wearing layer is 0.8mm.65 internal diameter of filling cavity is 0.35mm, the connection of 65 entrance one end of filling cavity
Charge pump 57, exit end is close to distal end current-limiting components 52.The outer diameter of connection driving flexible shaft 55 is 0.60mm, length and multi-cavity
68 length of transmission center cavity of pipe 61 matches, connection driving 55 both ends of flexible shaft respectively with the adapter 54 of distal end stiff shaft with
Extracorporeal proximal end stiff shaft 64 connects.The diameter in the hole of distal end current-limiting components 52 is 2.01mm, length 3.5mm, distal end stiff shaft
51 diameter is 2.00mm, is connected by adapter 54 with driving 55 one end of flexible shaft is connect.Extracorporeal proximal end current-limiting components 73
Side outside 61 human body of multi-lumen tube, the diameter in the hole of extracorporeal proximal end current-limiting components 73 are 3.01mm, length 3.0mm.Body
The diameter of outer proximal end stiff shaft 64 guarantees its high speed using the inner ring close-fitting extracorporeal proximal end stiff shaft 64 of bearing 63 for 2.98mm
Concentricity when rotation.The bore dia of extracorporeal proximal end discharge orifice component 82 is 0.5mm, length 2.0mm.Charge pump 57 is with every small
When 42~600ml/hr flow perfusion, in the case where mean arterial pressure 80mmHg, wherein 2~60.0ml/hr flow into human body,
40~540ml as connection driving flexible shaft coolant liquid outflow human body outside, the flow-rate ratio of in vitro/in vivo because of groundwater increment not
Together, variation range is 9~20 times；External power source speed operates in 10000~50000 revs/min, and temperature rise is not in operational process
More than 40 DEG C, the particle of connection driving flexible shaft 55 and the friction generation of antifriction metal (AFM) layer 67 enters waste liquid with the cooling liquid stream that flows back and returns
It receives unit 58 or is deposited in transmission center cavity 68, it is basic without flowing into human body.
Embodiment 4: increase return line impedance using extracorporeal proximal end constriction, and control regurgitant volume using pressure valve
As shown in figure 5, the length of the multi-lumen tube 61 in the present embodiment is 1100mm, transmission 68 inner wall of center cavity has laid one
Layer antifriction metal (AFM) layer 67, wherein 67 internal diameter of antifriction metal (AFM) layer is 0.80mm.65 internal diameter of filling cavity is 0.35mm, 65 entrance of filling cavity
One end connects charge pump 57, and exit end is close to distal end current-limiting components 52.The outer diameter of connection driving flexible shaft 55 is 0.60mm,
68 length of transmission center cavity of length and multi-lumen tube 61 matches, connection driving 55 both ends of flexible shaft respectively with distal end stiff shaft
Adapter 54 is connect with the adapter of proximal end stiff shaft.The diameter in the hole of distal end current-limiting components 52 is 1.61mm, and length is
3.5mm, the diameter of distal end stiff shaft 51 are 1.60mm, are connected by adapter 54 with driving 55 one end of flexible shaft is connect.In vitro
Proximal end includes pressure valve 45, and pressure is controlled in 25mm mercury column, then flow control is in 34~660ml/hr per hour.Extracorporeal proximal end
The diameter of stiff shaft 64 is 2.49mm, is connected with the other end for connecting driving flexible shaft 55, uses the inner ring close-fitting body of bearing 63
Outer proximal end stiff shaft 64, guarantees concentricity when its high speed rotation, its centre bore internal diameter of extracorporeal proximal end current-limiting components 73 is
2.50mm.Charge pump 57 is perfused with the flow of 36~720ml/hr per hour, in the case where mean arterial pressure 80mmHg, wherein
2~60.0ml/hr flows into human body, and 34~660ml flows out outside human body as the coolant liquid of connection driving flexible shaft 55, external/body
Interior flow-rate ratio is 11~17 times；56 revolving speed of power source operates in 10000~50000 revs/min, and temperature rise does not surpass in operational process
40 DEG C are crossed, the particle that connection driving flexible shaft 55 and the friction of non-metallic wear resistant layer 67 generate enters devil liquor recovery with the cooling liquid stream that flows back
Unit 58 is deposited in transmission center cavity 68, basic without flowing into human body.
The perfusion of the road embodiment 5:2
As shown in fig. 6, the length of the multi-lumen tube 61 in the present embodiment is the multi-lumen tube 61 of 1100mm, wherein being driven center cavity
68 inner walls have also laid one layer of antifriction metal (AFM) layer 67, and wherein 67 internal diameter of antifriction metal (AFM) layer is 1.0mm, and 65 internal diameter of filling cavity is
0.3mm, 65 entrance one end of filling cavity connect charge pump 57, and exit end is located at internal proximal end current-limiting components 53 and distal end restriction
Between part 52,66 internal diameter of the second road filling cavity is 0.35mm, and entrance one end connects charge pump 57, and exit end is located at close in vivo
Hold side of the current-limiting components 53 outside human body；Connection driving 55 outer diameter of flexible shaft is 0.4mm, the transmission of length and multi-lumen tube 61
The length of center cavity 68 matches, and connection driving 55 both ends of flexible shaft are connect with distal end stiff shaft 51 and power source 56 respectively.Far
The diameter for holding stiff shaft 51 is 0.99mm, and the diameter of the centre bore of distal end current-limiting components 52 is 1.00mm, length 2.0mm, body
The diameter in the hole of interior proximal end current-limiting components 53 is 1.00mm, length 2.0mm.In the present embodiment, perfusion is divided into 2 tunnels, is perfused
Pump 57 also there are two, independently of each other, it is possible to be adjusted according to actual needs and pour into human body and the stream of external coolant liquid of flowing back out
Ratio is measured, general achievable 1~300 times of flow-rate ratio is freely adjusted, although being slightly increased system compared to aforementioned several schemes
Complexity, but it is that of obtaining bigger flow-rate ratio adjustable range.56 revolving speed of power source operates in 10000~50000 revs/min,
Temperature rise is no more than 40 DEG C in operational process, and the particle that connection driving flexible shaft 55 and pipe friction generate is with the cooling liquid stream that flows back
Enter devil liquor recovery unit 58 or is deposited in transmission center cavity 68, it is basic without flowing into human body.
Claims (17)
1. a kind of rotary drive interposing catheter for having perfusion functional, including rotation function part, connection driving flexible shaft, distal end are just
Property axis, power source, the both ends of connection driving flexible shaft are connected with distal end stiff shaft and power source respectively, and the rigid axis connection in distal end is revolved
Rotating function part, the rotation torque that power source generates pass to rotation function part via connection driving flexible shaft, distal end stiff shaft,
Be characterized in that, further include distal end current-limiting components, as distal end constriction installation pedestal fixation package casing, perfusion liquid supply
To unit and multi-lumen tube, multi-lumen tube includes 1 tunnel transmission center cavity pipeline and at least 1 road filling cavity pipeline, in which:
Connection driving flexible shaft is connected through transmission center cavity pipeline, fixed package casing with multi-lumen tube, provides a perfusion liquid
The space that body shunts；
Fluid supply unit is perfused and provides pressure by charge pump, distal end current-limiting components are flowed to by filling cavity pipeline, and in fixation
It is divided into 2 tunnels, a small amount of perfusion liquid under the hindrance function in gap between distal end current-limiting components and distal end stiff shaft in package casing
Body is the first via, is flowed into human body after flowing out fixed package casing by the gap of distal end current-limiting components and distal end stiff shaft；It is surplus
Remaining perfusion liquid be the second tunnel, flow into transmission center cavity pipeline in, the second tunnel be perfused liquid transmission center cavity pipeline in
Connection driving flexible shaft carries out heat exchange and take the particle that abrasion generates in vitro out of.
2. a kind of rotary drive interposing catheter for having perfusion functional as described in claim 1, which is characterized in that further include giving up
The second tunnel perfusion liquid of liquid recovery unit, the transmission center cavity pipeline outflow flows into devil liquor recovery unit.
3. a kind of rotary drive interposing catheter for having perfusion functional as claimed in claim 2, which is characterized in that further include with
The rotating mechanism that the devil liquor recovery unit is fixedly connected.
4. a kind of rotary drive interposing catheter for having perfusion functional as described in claim 1, which is characterized in that further include body
Interior proximal end current-limiting components, internal proximal end current-limiting components and the distal end stiff shaft clearance fit, the second tunnel perfusion liquid of fraction
Body flows into the transmission center cavity pipeline via the gap two between internal proximal end current-limiting components and distal end stiff shaft, and between this
The radial dimension of gap two is greater than or equal to the radial dimension in gap between distal end current-limiting components and distal end stiff shaft.
5. a kind of rotary drive interposing catheter for having perfusion functional as claimed in claim 4, which is characterized in that further include body
Interior proximal end aerial drainage component, internal proximal end aerial drainage component are installed in fixed package casing, there is more than or equal to 1 or more number on component
The aperture of amount, most second tunnel perfusion liquid can be flowed into the transmission center cavity pipeline by these apertures.
6. a kind of rotary drive interposing catheter for having perfusion functional as described in claim 1, which is characterized in that the power
Source is by driving flexible shaft described in extracorporeal proximal end rigidity axis connection.
7. a kind of rotary drive interposing catheter for having perfusion functional as claimed in claim 6, which is characterized in that further include body
Liquid discharge is perfused in outer proximal end current-limiting components, extracorporeal proximal end current-limiting components and the extracorporeal proximal end stiff shaft clearance fit, the second tunnel
Through flowing into devil liquor recovery unit by the gap three between proximal end current-limiting components and proximal end stiff shaft after the transmission center cavity pipeline,
And the radial dimension in the gap three is greater than or equal to the radial dimension in gap between distal end current-limiting components and distal end stiff shaft.
8. a kind of rotary drive interposing catheter for having perfusion functional as claimed in claim 7, which is characterized in that further include body
Outer proximal end aerial drainage component or pressure valve, there is the aperture more than or equal to 1 or more quantity on extracorporeal proximal end aerial drainage component, and described second
Road perfusion liquid is divided at least two-way after flowing out the transmission center cavity pipeline, flows into the waste liquid via the gap three all the way
Recovery unit, another way flow into the devil liquor recovery unit via extracorporeal proximal end aerial drainage component or pressure valve.
9. a kind of rotary drive interposing catheter for having perfusion functional as claimed in claim 4, which is characterized in that including 2 tunnels
The perfusion liquid overwhelming majority of the filling cavity pipeline, the 1st road filling cavity pipeline is rigid by the distal end current-limiting components and distal end
Property axis gap flow into human body, the 1st road filling cavity pipeline fraction perfusion liquid by internal proximal end current-limiting components and distal end
Gap two between stiff shaft flows into transmission center cavity pipeline；The remote outlet of 2nd road filling cavity pipeline proximal end current limliting in vivo
Side of the component outside human body, the perfusion liquid of the 2nd road filling cavity pipeline flow out after passing back into the transmission center cavity pipeline
Human body.
10. a kind of rotary drive interposing catheter for having perfusion functional as described in claim 1, which is characterized in that described
The inner wall for being driven center cavity pipeline is equipped with wearing layer.
11. such as a kind of described in any item rotary drive interposing catheters for having perfusion functional of claim 1-9, feature exists
In, the transmission center cavity pipeline and the filling cavity pipeline be independent pipeline or the transmission center cavity pipeline with it is described
Filling cavity pipeline is the different cavitys of same pipeline.
12. a kind of rotary drive interposing catheter for having perfusion functional as described in claim 1, which is characterized in that the rotation
The external diametrical extent of rotating function part is 2~8mm.
13. a kind of rotary drive interposing catheter for having perfusion functional as described in claim 1, which is characterized in that described solid
The diameter range for determining package casing is 2~10mm.
14. a kind of rotary drive interposing catheter for having perfusion functional as described in claim 1, which is characterized in that connection is driven
The cross section of dynamic flexible shaft is projected as central symmetry polygon or round, and diameter projected's range is in 0.1~0.8mm.
15. a kind of rotary drive interposing catheter for having perfusion functional as described in claim 1, which is characterized in that distal end limits
Centre bore is provided in the middle part of stream unit, the diameter range of centre bore is 0.5~2.6mm.
16. a kind of rotary drive interposing catheter for having perfusion functional as claimed in claim 13, which is characterized in that described remote
Hold the diameter range of stiff shaft for 0.908~0.998 times of the center-hole diameter size of distal end current-limiting components.
17. a kind of rotary drive interposing catheter for having perfusion functional as described in claim 1, which is characterized in that the biography
The liquid flow section area of dynamic center cavity pipeline is 0.1~30 times of the connection driving flexible shaft cross-sectional area.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821672961.7U CN209221277U (en) | 2018-10-16 | 2018-10-16 | The rotary drive interposing catheter for having perfusion functional |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821672961.7U CN209221277U (en) | 2018-10-16 | 2018-10-16 | The rotary drive interposing catheter for having perfusion functional |
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| CN209221277U true CN209221277U (en) | 2019-08-09 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109432572A (en) * | 2018-10-16 | 2019-03-08 | 昕涌医疗器械(上海)有限公司 | A kind of rotary drive interposing catheter having perfusion functional |
| CN113975624A (en) * | 2021-01-22 | 2022-01-28 | 苏州心擎医疗技术有限公司 | Blood pump and power transmission assembly thereof |
| CN116271508A (en) * | 2023-05-25 | 2023-06-23 | 丰凯利医疗器械(上海)有限公司 | Driving unit of active interventional medical instrument |
| CN118320295A (en) * | 2024-06-14 | 2024-07-12 | 安徽通灵仿生科技有限公司 | Flushing fluid sealing system of blood pump transmission device |
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2018
- 2018-10-16 CN CN201821672961.7U patent/CN209221277U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109432572A (en) * | 2018-10-16 | 2019-03-08 | 昕涌医疗器械(上海)有限公司 | A kind of rotary drive interposing catheter having perfusion functional |
| CN109432572B (en) * | 2018-10-16 | 2024-05-28 | 杨礼瑾 | Rotary transmission interventional catheter with perfusion function |
| CN113975624A (en) * | 2021-01-22 | 2022-01-28 | 苏州心擎医疗技术有限公司 | Blood pump and power transmission assembly thereof |
| CN113975624B (en) * | 2021-01-22 | 2022-05-20 | 苏州心擎医疗技术有限公司 | Blood pump and power transmission assembly thereof |
| CN116271508A (en) * | 2023-05-25 | 2023-06-23 | 丰凯利医疗器械(上海)有限公司 | Driving unit of active interventional medical instrument |
| CN116271508B (en) * | 2023-05-25 | 2023-09-26 | 丰凯利医疗器械(上海)有限公司 | Driving unit of active interventional medical instrument |
| CN118320295A (en) * | 2024-06-14 | 2024-07-12 | 安徽通灵仿生科技有限公司 | Flushing fluid sealing system of blood pump transmission device |
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Effective date of registration: 20200214 Address after: 200120 room 2303, No. 12, Lane 1097, Pudong Avenue, Pudong New Area, Shanghai Patentee after: Yang Lijin Address before: 200120 4th Floor, 416 Zhoushi Road, Pudong New District, Shanghai Patentee before: Xinchung Medical Devices (Shanghai) Co., Ltd. |
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