CN105903117A - Conduit - Google Patents
Conduit Download PDFInfo
- Publication number
- CN105903117A CN105903117A CN201610218142.4A CN201610218142A CN105903117A CN 105903117 A CN105903117 A CN 105903117A CN 201610218142 A CN201610218142 A CN 201610218142A CN 105903117 A CN105903117 A CN 105903117A
- Authority
- CN
- China
- Prior art keywords
- pulling rope
- bendable
- bendable tune
- tune
- conduit
- 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.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/005—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M2025/0063—Catheters; Hollow probes characterised by structural features having means, e.g. stylets, mandrils, rods or wires to reinforce or adjust temporarily the stiffness, column strength or pushability of catheters which are already inserted into the human body
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The present invention discloses a conduit, the head of which is bendable and the bending radius is variable. The conduit comprises a main body and a head positioned at the far end of the main body and connected with the main body. The head comprises a central tube having at least one bending section; at least one set of pulling ropes respectively fixed to the corresponding one of the at least one bending section; and a guide wire penetrating into the central tube, wherein the guide wire comprises a distal portion and a proximal portion which are connected, and the harness of the distal portion is less than that of the proximal portion. The guide wire can move relative to the central tube, so that when the connection position of the distal portion and the proximal portion of the guide wire is positioned at different positions of one bending section of the at least one bending section, the bending section can be bent with different radiuses through controlling the corresponding set of pulling ropes of the at least one set of pulling ropes. The conduit can be adapted to penetration of blood vessel divergence of various shapes, angles and bending lengths.
Description
Technical field
The present invention relates to medical apparatus and instruments, particularly to a kind of conduit getting involved operation for blood vessel Wicresoft.
Background technology
Micro-wound surgical operation is risen the eighties in 20th century, gets involved operation for its important branch.Get involved operation and can be divided into blood
Pipe is got involved and Non-vascularized iliac bone.In recent years, blood vessel Wicresoft gets involved operation (Minimally invasive vascular
Surgery, MIVS) the most at home and abroad it is widely used.Blood vessel Wicresoft gets involved operation and refers in operation process in medical science
Under the guiding of image radioscopic image, doctor inserts the catheter in blood vessel and controls the catheter proximal end direction of motion in vitro, by conduit
Deliver to target vessel from patient site of puncture, carry out corresponding operative treatment.This operation has that wound is little, goes out insufficiency of blood, patient suffering
Little, post-operative recovery is fast and the advantage such as safe and reliable, applied to various clinical subject, produced such as cardiovascular surgery, neurosurgery, woman
Section, oncology, vascular surgery, ent surgery etc..
The operational approach of intravascular intervention operation start that day from being born just with by rotary guide pipe and seal wire by conduit before
Seal wire in the head of end is soundd out and is selected the traditional method of intravasation bifurcated to combine.Conduit, the rotation of seal wire and take out
Inserting the damage to blood vessel wall is that tunica intima is scraped scratch, and the body of people can carry out nature repairing to these injuries, these machines
Naturally repairing of body causes the hypertrophy of tunica intima tissue to thicken on the contrary, causes the narrow of a vessel diameter new round and blocking.This
Also it is one of the major defect of traditional cannulas method.
Traditional intubation procedure rotary guide pipe selects to sound out intravasation bifurcated, and experienced doctor also will be through repeatedly
Rotating to sound out and just can penetrate, common new hand doctor makes strenuous efforts to select to sound out rear tube through a large amount of rotations especially and just can wear
Enter, thus the scraping damage of blood vessel wall is well imagined.
Additionally for having had the patient at some ages, blood vessel is piled up for a long time due to foreign material harmful in blood,
More or less define some specklees, traditional intubation procedure rotary guide pipe and seal wire to select to sound out intravasation bifurcated, increase
The big probability of these specklees of swiping, it is possible to can cause speckle come off quickly be flushed to minute blood vessel in form thromboembolism,
The most directly injure life.The extreme case of this danger happens occasionally in Ink vessel transfusing clinical operation, and this is also blood
A Risks of operation is got involved in pipe.
In order to reduce the conduit scraping damage to blood vessel wall, must for traditional intravascular intervention operation method
Rotary guide pipe and the deficiency of seal wire, have developed the conduit that head can bend under control in prior art.Such as, Chinese patent
Publication number CN 103372260 A and U.S. Patent Publication No. US2008/0139999A1 disclose front end and has controlled
The conduit of bending joint, by arranging the joint with different hardness in the front end of conduit, and controls to be connected to corresponding joint
Pulling rope, can realize the control to each joint flexion angle, thus enable the duct to the trend according to blood vessel and be curved.So
And, above-mentioned existing conduit once makes complete, its attainable bending parameters, especially the bending under certain angle of bend
The scope of radius is got off with regard to substantially stationary, and the blood vessel in human body is various, in shape, angle and curved between different blood vessel
Can have significant difference on bilge radius, this allow for existing this kind of conduit enter some particular blood vessel, especially those
When angle of bend and/or bending radius can realize the blood vessel of scope beyond conduit, can meet difficulty, even be forced to stop operation.
Thus, it is necessary to develop general degree higher head flexible conduit.
Summary of the invention
In view of this, it is an object of the invention to provide the conduit that a kind of head is flexible and bending radius is variable.
For achieving the above object, the invention provides a kind of conduit, including main body be positioned at body distal end and be attached thereto
Head, it is characterised in that described head includes: central canal, and it has at least one bendable tune；Least one set pulling rope,
It is individually secured to corresponding at least one bendable tune described；Penetrate the seal wire in described central canal, described seal wire bag
Including connected distal portions and proximal part, the hardness of described distal portions is less than the hardness of described proximal part；Wherein, described
Seal wire can move relative to described central canal so that described in being positioned at when the distal portions of described seal wire and the connecting place of proximal part extremely
During the diverse location of a bendable tune in a few bendable tune, corresponding by control in described least one set pulling rope
One group of pulling rope, can make one bendable tune with different radius bend.
Optionally, from the direction of far-end to near-end, the hardness of at least one bendable tune described increases successively.
Optionally, the hardness of the proximal part of described seal wire can more than at least one at least one bendable tune described
The hardness of bending section.
Optionally, at least one bendable tune described includes the first bendable tune being positioned at the far-end of central canal and is positioned at institute
State the first bendable tune near-end and the second bendable tune being connected with described first bendable tune；Described least one set pulling rope bag
Include the first group of pulling rope being fixed to described first bendable tune and the second group of pulling rope being fixed to described second bendable tune.
Optionally, the hardness of described first bendable tune is less than the hardness of described second bendable tune.
Optionally, it is positioned at described first bendable tune not when the distal portions of described seal wire and the connecting place of proximal part
During co-located, by controlling described first group of pulling rope, described first bendable tune can be made with different radius bend.
Optionally, it is positioned at described second bendable tune not when the distal portions of described seal wire and the connecting place of proximal part
During co-located, by controlling described second group of pulling rope, described second bendable tune can be made with different radius bend.
Optionally, by controlling described first group of pulling rope further, described first bendable tune also can be made independent of institute
State the second bendable tune bending.
Optionally, also include the first fixture being fixed on the far-end of described first bendable tune, and be fixed on institute
Stating the second fixture of the far-end of the second bendable tune, described first group of pulling rope is fixed to institute by described first fixture
Stating the far-end of the first bendable tune, described second group of pulling rope is fixed to described second flexible by described second fixture
The far-end of section.
Optionally, also include at least one first induction element being fixed on described first bendable tune, described at least
Each in one the first induction element has central authorities' macropore and multiple peripheral aperture, and described first bendable tune is from described
Passing in the central macropore of the first induction element, the number of the multiple peripheral aperture of described first induction element is more than or equal to described
The number of pulling rope in first group of pulling rope, each pulling rope in described first group of pulling rope is respectively from described first induction element
Respective peripheral aperture in pass.
Optionally, also include at least one second induction element being fixed on described second bendable tune, described at least
Each in one the second induction element has central authorities' macropore and multiple peripheral aperture, and described second bendable tune is from described
Passing in the central macropore of the second induction element, the number of the multiple peripheral aperture of described second induction element is more than or equal to described
In first group of pulling rope in the number of pulling rope and described second group of pulling rope the number of pulling rope and, described first group of tractive
Each pulling rope in rope and each pulling rope in described second group of pulling rope respectively from described second induction element corresponding
Enclose in aperture and pass.
Optionally, also include the radiopaque labelling being positioned at described head, for indicating the direction of motion of described head.
Optionally, described radiopaque labelling includes the first mark part and second labeling section with different bearing of trend
Point, and length, width and at least one in shape of described first mark part is different from described second mark part.
Optionally, described catheter main body has a central bore and multiple peripheral chamber, described central canal and described central authorities
Chamber is connected, and described least one set pulling rope passes in one or more from the plurality of peripheral chamber.
The present invention is by arranging the seal wire that the softer proximal part of distal portions is harder in central canal, existing except realizing
Have outside the various angle of bend of conduit, change the bending half of conduit also by regulation seal wire position in central canal
Footpath, makes catheter head under the control of least one set pulling rope, and combined change diversified catheter head attitude, adapts to
The penetrating of the vascular bifurcation of variously-shaped, angle and bending radius, the extreme enrichment content of catheter head bending change.Thus
Make catheter head just can be directly inserted into purpose blood vessel by accurate micro-swinging, reduce conduit to greatest extent and blood vessel wall is scraped
Scratch evil.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the conduit of the present invention；
Fig. 2 is the internal structure schematic diagram of the head of conduit shown in Fig. 1；
Fig. 3 A is the bending range schematic diagram in traditional flexible joint；
Fig. 3 B to 3D is the bending range schematic diagram of the bendable tune of the present invention；
Fig. 4 A to 4C shows the seal wire made in different ways.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the conduit of the present invention is described in further detail.According to following explanation and
Claims, advantages and features of the invention will be apparent from.It should be noted that, accompanying drawing all uses the form simplified very much and all
Use non-ratio accurately, only in order to facilitate, to aid in illustrating lucidly the purpose of the embodiment of the present invention.
The invention provides a kind of conduit, it is adaptable to get involved operation, be particularly suited for blood vessel Wicresoft and get involved operation, by will
Conduit is delivered to target vessel (i.e. the blood vessel at lesions position place) and is carried out corresponding operative treatment from patient site of puncture.
As it is shown in figure 1, this conduit includes main body 2 and the head 1 being connected, in conduit course of conveying, head 1 is as guiding
Parts, with main body 2 thereafter together along blood vessel road that is predetermined or that determine in real time under the manipulation of operator (such as doctor)
Footpath is current until arriving target vessel.Described main body 2 usually multi-lumen tube, and there is the longest length, to guarantee the head when conduit
When portion 1 arrives target vessel, main body 2 also remains at least partially within outside patient body, only draws and head 1 phase as signal in Fig. 1
Sub-fraction main body 2 even, its physical length should be as limit.When the head 1 of conduit arrives lesions position, pass through main body
Chamber (usually main chamber of central authorities) in 2 can carry operating theater instruments, medicine etc. to lesions position, to carry out lesions position
Treatment.Main body 2 (i.e. multi-lumen tube) may also include the auxiliary chamber that multiple centrally located main chamber is peripheral, for for leading hereinafter described
Stay cord passes, and/or as reserve chamber, as can be as endoscope's working hole.
For convenience, hereafter the one end at head 1 place is defined as far-end, namely away from one end of operator,
The one end at main body 2 place is defined as near-end, namely the one end close to operator.Therefore, head 1 is positioned at whole conduit
Far-end.
Skilled addressee readily understands that, whether can conduit current smoothly along predefined paths at Ink vessel transfusing and
Blood vessel wall can be caused unnecessary scraping damage, depend primarily on the controllable property of catheter head 1, thus hereafter emphasis is situated between
The structure of catheter head 1 of continuing and control mode thereof, in order to preferably embody beneficial effects of the present invention.
Referring to Fig. 1, probe 10 that the catheter head 1 of the present embodiment includes being sequentially connected from far-end to near-end,
One bending joint (bending segment) 11 and the second bending joint 12, the near-end of described second bending joint 12 and conduit
The far-end of main body 2 is connected.Described probe 10 can be such as that the present inventor is public in China Patent Publication No. CN103877664A
The intravascular intervention sense of touch probe with touch range and azimuth information feedback opened, the full content of this patent is by quoting also
Enter herein, at this, structure of probe 10 is not repeated.
The detailed construction of the first bending joint 11 and the second bending joint 12 refers to Fig. 2.Described catheter head 1 includes passing through
Wear the first bending joint 11 and central canal 20 of the second bending joint 12.Described central canal 20 can be made up of elastomeric material
One hollow pipe, thus can bend under external force.The far-end of described central canal 20 is provided with aforementioned probe 10, described central canal
The near-end of 20 may be inserted into and be fixed to the central main chamber of main body 2 (i.e. multi-lumen tube), connects with main chamber of central authorities, thus performs the operation
Apparatus, medicine etc. can enter central canal 20 by main chamber of central authorities.
In order to make catheter head 1 enter different vascular bifurcations, described head 1, especially central canal 20, need to curve not
Same shape, such as " C " shape, " u "-shaped, serpentine etc..When " C " shape and " u "-shaped, only central canal 20 need to be applied one
The power in individual direction, or apply towards the same side two or more directions make a concerted effort, corresponding shape can be bent to；But
When serpentine, the different parts to central canal 20 is the most at least needed to apply to be approximately towards rightabout power.To this end,
Described central canal 20 preferably has two or more bendable tunes (bending section), so as to control respectively
The bending direction of each bendable tune.Additionally, in order to improve controllable property, also each bendable tune can be set to have difference
Hardness, and it is preferred that the hardness of each bendable tune increases to near-end successively from far-end, in order to each bendable tune can be basic
It is curved independent of other bendable tune.
In the embodiment shown in Figure 2, central canal 20 has two bendable tunes, and being respectively first from far-end to near-end can
Bending section 21 and the second bendable tune 22, wherein, the hardness of the first bendable tune 21 is less than the hardness of the second bendable tune 22.Tool
Body, described first bendable tune 21 is made up of a part of 20a of central canal, and described second bendable tune is by another of central canal
Part 20b is constituted plus sleeve 23.When needs form more bendable tune, can overlap on different center tube section
The sleeve pipe of different-thickness or varying number can realize the change of hardness.
Additionally, make, also by following and other modes, multiple bendable tunes that hardness increases successively: such as by height
The mode of molecular material integral molded plastic is produced corresponding to different bendable tunes, and the external diameter of its appropriate section becomes big center successively
Pipe 20；Central canal 20 and/or sleeve pipe 23 use different punch density to punch zones of different, the place that punching is many
Than punching, local hardness that is few or that do not punch is low；On central canal 20, the position of corresponding different bendable tunes is divided to near-end by far-end
The sleeve pipe 23 that the most sheathed material is the most hardening, each sleeve pipe 23 can use the macromolecular material of different hardness；By central canal
20 are divided into, from far-end to near-end, the central canal unit that two or more hardness are the most hardening, and by adjacent central canal unit
Connect with connecting method or inserting mode.On address and more realize the detailed description of the invention of bendable tune that hardness is incremented by and can join
Readding the invention of Publication No. CN103372260A of the present inventor's application, entire contents is incorporated herein by.
Please continue to refer to Fig. 2, described conduit also includes the far-end being fixed to the first bendable tune 21 by the first fixture
First group of pulling rope 24 at place, and second group of tractive of the far-end of the second bendable tune 22 it is fixed to by the second fixture
Rope 25.Concrete, described first fixture is the first flange 26, and it has central macropore (not shown) can for confession first
Bending section 21 (namely center tube section 20a) passes, and also can have multiple peripheral aperture (not shown) for for first
The end of group pulling rope 24 extends there through and ties a knot fixing.Described second fixture is the second flange 27, and it has central macropore
27a, for passing for the second bendable tune 22 (namely center tube section 20b and sleeve pipe 23), also has multiple peripheral aperture
27b and 27c, wherein, peripheral aperture 27b is for passing for first group of pulling rope 24, and peripheral aperture 27c is for for second group of tractive
The end of rope 25 extends there through and ties a knot fixing.Although be described as pulling rope being fixed by knot tying fashion herein, but this
Bright be not limited to this, described pulling rope also can by any mode well known in the art, such as riveting, bonding, connected by auxiliary
The modes such as part are fixed to fixture.Correspondingly, fixture also can be not provided with pass the periphery with knotting for pulling rope end little
Hole, or described peripheral aperture is replaced by the connector that the connector with pulling rope end mates.
In order to avoid interfering between pulling rope, have influence on manipulation precision, preferably can make in first group of pulling rope 24
Each pulling rope and second group of pulling rope 25 in each pulling rope stagger setting, such as in alternately arranged and equally distributed mode
It is arranged in central canal 20 periphery.Optionally, also one or more guiding element can be fixed on the first and/or second bendable tune
Part, for guiding the bearing of trend of pulling rope, avoids interfering of adjacent pulling rope further.As in figure 2 it is shown, due to first
The length of bendable tune 21 is shorter, it may not be necessary to arrange induction element, and the length of the second bendable tune 22 is relatively long, because of
This, be preferably provided one or more induction element.In the embodiment shown in Figure 2, in the substantial middle of the second bendable tune 22
Position is provided with three-flange 28 as induction element.Described three-flange 28 has central macropore 28a for flexible for second
Section 22 passes, and also has multiple peripheral aperture 28b and 28c, and wherein, peripheral aperture 28b is used for passing for first group of pulling rope 24,
Peripheral aperture 28c is for passing for second group of pulling rope 25.So, each pulling rope in first, second group of pulling rope 24,25 is just
Will not influence each other.
Shown in Fig. 2 first and second group pulling rope 24 and 25 all has four pulling ropes, and often organizes four in pulling rope
Root pulling rope is uniformly distributed around central canal 20.As a example by the first bendable tune 21, when appointing in first group of pulling rope 24 of tractive
During a piece pulling rope of meaning, the far-end of the first bendable tune 21 can bend from proximally direction, the side at this pulling rope place.When leading
When drawing any two adjacent pulling ropes in first group of pulling rope 24, the far-end of the first bendable tune 21 can be as required from this
Any one lateral proximal direction bending between two pulling ropes.It is similar to, also can make second by controlling second group of pulling rope 25
The far-end of bendable tune 22 bends towards any direction.Bending direction and the second bendable tune 22 when the first bendable tune 21 far-end
When the bending direction of far-end is substantially opposite, serpentine shape can be bowed out.
It should be readily apparent to one skilled in the art that when one group of pulling rope comprise three or above pulling rope, no matter these
Whether pulling rope is uniformly distributed, and all can realize any direction bending of bendable tune.But, in order to reduce manipulation difficulty and raising
Manipulation efficiency, preferably uses the even number root pulling rope more than or equal to four and makes these pulling ropes be uniformly distributed, thus holding very much
Easily need the direction of bending and angle-determining to go out to need tractive any root or which root pulling rope according to catheter head and every lead
The tractive dynamics of stay cord.
Although the present embodiment is described as often organizing pulling rope has four pulling ropes, and recommends the even number more than or equal to four
Root pulling rope, but the invention is not restricted to this.Also the present invention can be realized less than four pulling ropes it is true that use.Such as, use
A piece pulling rope is fixed on the far-end of the first bendable tune 21, the far-end of the first bendable tune 21 can be made towards tractive by tractive
The direction bending that rope tightens up；Two pulling ropes are used to be fixed on the far-end of the first bendable tune 21, by tractive two respectively
Pulling rope, can make the far-end of the first bendable tune 21 bend towards two corresponding directions；As in these two pulling ropes
Being fixed on the far-end of the first bendable tune 21, another root is fixed on the far-end of the second bendable tune 22, is led by these two
The tractive of stay cord can bow out two rightabout crooked radians, can bow out a serpentine；Three pulling ropes are used to fix
At the far-end of the first bendable tune 21, by successively tractive and loosen pulling rope successively, the first bendable tune 21 can be made to bend
After do the circumferential movement of 360 degree with central canal 20 for axle；Using six roots of sensation pulling rope, three one group is separately fixed at first and second
The far-end of bendable tune 21,22, combines tractive and loosening successively by each pulling rope, can make catheter head 1 curve serpentine it
After do the circumferential movement of 360 degree with central canal 20 for axle, or bow out various forms of upper and lower two parts there is deflection angle
Serpentine.
The catheter head 1 being explained above the present invention can bend towards any direction with arbitrarily angled under the control of pulling rope
Go out various shape.Will be apparent from how being changed by seal wire bending radius or the arc of curvature of bendable tune below
Long.
As described in background technology, although the conduit disclosed in CN 103372260 A and US2008/0139999A1 also can
Under the control of pulling rope, one way or another bends with different angles, but as shown in Figure 3A, each controlled deflection joint
Curvature movement are all that once conduit completes with the near-end terminal A in this joint as fulcrum, each controlled deflection joint curved
Bent arc length is just fixed up, and is substantially equal to the length in this controlled deflection joint, and accordingly, each controlled deflection joint
Bending radius under certain angle of bend is the most substantially stationary gets off.Solid line in Fig. 3 A shows controlled deflection arthrogryposis
Radius R1 when 90 degree.
Unlike existing conduit, in the conduit of the present invention also includes penetrating central canal 20 and can relatively move by central canal 20
Dynamic seal wire 30 (see Fig. 4 A to 4C), described seal wire 30 includes distal portions (distal portion) 31 and the close end being connected
Dividing (proximal portion) 32, the hardness of described distal portions 31 is less than the hardness of described proximal part 32.By changing
The connecting place 33 of described distal portions 31 and proximal part 32 position in bendable tune, thus it is possible to vary the position of described " fulcrum "
Put, so that same bendable tune can bow out any radius wanted or arc length.It is remote that Fig. 3 B to 3D sets forth seal wire
The connecting place 33 of end portion and proximal part various location (i.e. corresponding to fulcrum B, C, D) in bendable tune, flexible
Section bending range schematic diagram, the solid line in Fig. 3 B to 3D respectively illustrate bendable tune bend 90 degree time radius R2, R3,
R4.Can be found by comparison diagram 3A and Fig. 3 B to 3D, when, after the seal wire that have employed the present invention, not only the position of fulcrum can arbitrarily become
Change, and accordingly, the bending arc length of described bendable tune and the bending radius under certain angle of bend can also be any
Change.Thus it will be clear that the catheter head of present invention significant advantage in terms of controllable property.
About concrete structure and the production method of seal wire 30, a kind of example as shown in Figure 4 A, can use hardness relatively low
First material makes the distal portions 31 of seal wire, and the second material using hardness higher makes proximal part 32, then by two parts
Grafting, splicing, bonding or weld together and form described seal wire 30.It is also preferred that the left distal portions 31 and proximal part 32 exist
Connecting place 33 has essentially identical external diameter, so that the seal wire 30 that these two parts are formed after connecting has smooth appearance
Face, there is not any corner angle or projection in the connecting place 33 at two parts 31 and 32, in order to avoid blood vessel wall causes unnecessary damage.
Additionally, also can the far-end 34 of the distal portions 31 of described seal wire 30 be done in the arc-shaped, the most also can avoid to blood vessel wall not
Necessary damage.Owing to distal portions 31 is different with the hardness of proximal part 32, therefore the connecting place 33 at both defines hardness
Become position.When seal wire 30 inserts the bendable tune of central canal 20, and during pulling rope corresponding to tractive, the distal portions of seal wire
31 (softer) can be along with bendable tune together by stretch bending, and proximal part 32 (harder) then plays the effect of support, substantially without
Along with bendable tune bends.Proximal part 32 in order to ensure seal wire has enough support degrees, and described proximal part 32 is relatively
Have goodly will be high than any one bendable tune hardness.The hardness of distal portions 31 the most too much limits, permissible
More high or low than the hardness of any one bendable tune, as long as making the distal portions 31 by stretch bending to be together along with bendable tune
Can.
About seal wire another kind of example as shown in Figure 4 B, can use commaterial make seal wire 30, make distal portion
The external diameter dividing 31 is less than proximal part 32, thus realizes the hardness of distal portions 31 less than proximal part 32.Same, in order to keep away
Exempt from the seal wire unnecessary damage to blood vessel wall, can being connected the far-end 34 of seal wire 30 and distal portions 31 and proximal part 32
Place 33 is made the most smooth, in order to avoid producing corner angle or projection.In this case, distal portions 31 and the phase of proximal part 32
At Lian, 33 form a transitional region the shortest, and this transitional region changes the bending radius of bendable tune or arc length almost to seal wire
Not impact.When having transitional region, seal wire can be made when bending to have a crooked radian for natural transition.Additionally, also can be
Distal portions 31 puts the overcoat 35 that flexible material is made, and makes wire distal become streamlined.
About seal wire another example as shown in Figure 4 C, in the middle of hollow capillary tube 36, inject a flexibility thin
Silk 37, flexible filament 37 stretches out the distal portions 31 of the part described seal wire of composition of capillary tube 36, capillary tube 36 and encirclement thereof
Flexible filament 37 part collectively forms the proximal part 32 of seal wire.Same, for avoiding the seal wire unnecessary damage to blood vessel wall,
The far-end of capillary tube 36 can be fabricated to ramped shaped, and the far-end of flexible filament 37 can be fabricated to circular arc.Herein, capillary tube 36 is with soft
Property filament 37 can be mutually permanently connected, thus the length that flexible filament 37 stretches out capillary tube 36 part is fixing, or capillary
Pipe 36 also can not be connected in a position-stable manner with flexible filament 37, thus by changing the phase between capillary tube 36 and flexible filament 37
To position, adjustable flexible filament 37 stretches out the length of capillary tube 36 part.The advantage of this kind of adjustable length design will be in hereafter
Narration.
In addition to the various seal wires 30 shown in Fig. 4 A to 4C, aforementioned making also can be used to have multiple bendables of different hardness
The combination of any one or more in the various ways of tune makes the seal wire 30 with different hardness part, or also may be used
Any other well-known way using this area realizes, and repeats the most again at this.
Above-mentioned seal wire 30 is in addition to the bending radius that can change bendable tune or arc length, and also an important effect is
Liner makes central canal 20 not drawn flat fold in central canal 20.Owing to central canal 20 itself is hollow tube, in not having
In the case of portion's implant, it is easy to drawn flat fold, and after having had the liner of wire distal part 31, then can efficient solution
Certainly this problem, plays support, the effect of protection to central canal 20.To this end, the distal portions 31 of seal wire 30 should have enough
Length so that when no matter which bendable tune the connecting place 33 of distal portions 31 and proximal part 32 is positioned in, described far-end
Part 31 can liner in remaining bendable tune of this bendable tune and far-end thereof.Such as, for there are two shown in Fig. 2
The catheter head 1 of bendable tune, when the connecting place 33 of wire distal part 31 and proximal part 32 is positioned at the second bendable tune 22
Time middle, described distal portions 31 at least can liner in whole first bendable tune 21, it is also possible to flexible slightly beyond first
The far-end of section 21.Lead for having three bendable tunes (being followed successively by first, second, third bendable tune from far-end to near-end)
Tube head, when the connecting place 33 of wire distal part 31 and proximal part 32 is positioned in the 3rd bendable tune, described distal portion
Points 31 at least can liner in the whole second and first bendable tune, it is also possible to slightly beyond the far-end of the first bendable tune.
In order to ensure the described cushioning effect of wire distal part 31, for seal wire nonadjustable for length, may work as
When the connecting place of distal portions 31 and proximal part 32 is positioned in the first bendable tune 21, distal portions 31 can stretch out the first bendable
21 1 sections of longer distances of tune, and extend into the part of probe 10, this is accomplished by when size design considering respectively may be used
The size of bending section, the size of wire distal part and the size of probe, to ensure the shifting at the relative central canal 20 of seal wire 30
Long length will not be passed from 10 far-ends of popping one's head in during Dong thus have influence on catheter head bending or be damaged to blood vessel wall.
In this case, the length-adjustable seal wire shown in Fig. 4 C is used to can be more advantageous, can be in operating process
In adjust in real time the length of wire distal part 31, thus it is long also will not to pass probe 10 while guaranteeing cushioning effect
Distance so that the design of conduit each several part size is the most flexible.
Referring to Fig. 2, described conduit may also include the radiopaque labelling 40 near head far-end, is used for indicating
The current phase place of catheter head 1.Described radiopaque labelling 40 is by radiopaque material, such as metal, metal mixture, metallization
Compounds etc. are made.In order to the current phase place of instruction catheter head 1, and it is not only position, described radiopaque labelling 40
Including having the first mark part 41 and the second mark part 42 of different bearing of trend, and the length of described first mark part 41
At least one in degree, width and shape is different from described second mark part 42.It is preferred that described first mark part 41 can
Axially arranged along central canal 20, and there is fisrt feature, described fisrt feature can by the length of described first mark part 41,
One or more decisions in width and shape, the such as first mark part 41 is one or more lines；Described second labelling
Part 42 along the circumference of central canal 20 or be radially arranged, and can have second feature, and described second feature also can be by described second
One or more decisions in the length of mark part 42, width and shape, the such as second mark part 42 is a rectangle marked.
Described first mark part 41 can be connected with the second mark part 42 and arrange or separately positioned.Can be clearly by x-ray imaging
Recognize the position of radiopaque labelling 40, and owing to first, second mark part 41,42 takes on a different character, permissible
Which picks out easily is axial labelling, and which is circumference or radial markings, so that it is determined that go out the current phase of catheter head 1
Position.
A kind of concrete radiopaque labelling 40 manufacture method such as see Fig. 2, at the far-end of the first bendable tune 21
Arranging a three-flange 43, described three-flange 43 is also through outside central canal 20 and is fixed on central canal 20.Use tinsel
The first axial mark part 41 is constituted in perpendicular certain or certain the several apertures inserting in three-flange 43, then with mixed with barium sulfate
The lagging made of material, be cut into horizontal stripe and be attached to the periphery of three-flange 43 and constitute the second mark part 42 circumferentially, institute
State lagging and can cover half circumference or even the quarter turn of three-flange 43.Thus, the radiopaque labelling of " L " shape is constituted
40, the phase place of catheter head can be pointed out the most intuitively, then determine the bending of catheter head whichaway and tractive any root
Or which root pulling rope.
Although the present embodiment be described as using two different directions, different characteristic mark part to form radiopaque mark
Note 40, but the invention is not restricted to this, it is possible to use other quantity, other directions or the indicia designs of shape, as long as can be with
This helps operator to judge, and catheter head is wanted whichaway to bend and points out operator to want which root pulling rope manipulation of tractive i.e.
Can.
In sum, the present invention passes through to arrange the seal wire that the softer proximal part of distal portions is harder in central canal, except
Can realize outside the various angle of bend of existing conduit, change conduit also by regulation seal wire position in central canal
Bending radius or arc length, make catheter head under the control of least one set pulling rope, combined change diversified leading
Tube head attitude, adapts at different-diameter vascular bifurcation to bending direction, angle of bend and the bending radius of interposing catheter not
Same requirement.
Foregoing description is only the description to present pre-ferred embodiments, not any restriction to the scope of the invention, this
Any change that the those of ordinary skill in bright field does according to the disclosure above content, modification, belong to the protection of claims
Scope.
Claims (14)
1. a conduit, including main body and be positioned at body distal end and the head being attached thereto, it is characterised in that described head bag
Include:
Central canal, it has at least one bendable tune；
Least one set pulling rope, is individually secured to corresponding at least one bendable tune described；
Penetrating the seal wire in described central canal, described seal wire includes distal portions and the proximal part being connected, described distal portions
Hardness less than the hardness of described proximal part；
Wherein, described seal wire can move relative to described central canal so that when distal portions and the phase of proximal part of described seal wire
During the diverse location of the bendable tune being positioned at Lian at least one bendable tune described, by controlling described least one set
Corresponding set of pulling rope in pulling rope, can make one bendable tune with different radius bend.
2. conduit as claimed in claim 1, it is characterised in that from the direction of far-end to near-end, at least one bendable described
The hardness of tune increases successively.
3. conduit as claimed in claim 1 or 2, it is characterised in that the hardness of the proximal part of described seal wire more than described extremely
The hardness of at least one the bendable tune in a few bendable tune.
4. conduit as claimed in claim 1, it is characterised in that at least one bendable tune described includes being positioned at the remote of central canal
End the first bendable tune be positioned at described first bendable tune near-end and the second bendable being connected with described first bendable tune
Tune；Described least one set pulling rope includes being fixed to first group of pulling rope of described first bendable tune and is fixed to described the
Second group of pulling rope of two bendable tunes.
5. conduit as claimed in claim 4, it is characterised in that the hardness of described first bendable tune is less than described second bendable
The hardness of tune.
6. the conduit as described in claim 4 or 5, it is characterised in that when distal portions and the phase of proximal part of described seal wire
When being positioned at the diverse location of described first bendable tune at Lian, by controlling described first group of pulling rope, can make described first can
Bending section is with different radius bend.
7. the conduit as described in claim 4 or 5, it is characterised in that when distal portions and the phase of proximal part of described seal wire
When being positioned at the diverse location of described second bendable tune at Lian, by controlling described second group of pulling rope, can make described second can
Bending section is with different radius bend.
8. conduit as claimed in claim 7, it is characterised in that by controlling described first group of pulling rope further, also can make
Described first bendable tune is independent of described second bendable tune bending.
9. conduit as claimed in claim 4, it is characterised in that also include being fixed on the far-end of described first bendable tune
First fixture, and it is fixed on the second fixture of the far-end of described second bendable tune, described first group of pulling rope leads to
Crossing described first fixture and be fixed to the far-end of described first bendable tune, described second group of pulling rope is solid by described second
Locking member is fixed to the far-end of described second bendable tune.
10. conduit as claimed in claim 9, it is characterised in that also include being fixed on described first bendable tune at least
One the first induction element, each at least one first induction element described has central authorities' macropore and multiple periphery is little
Hole, described first bendable tune passes from the central macropore of described first induction element, described first induction element multiple
The number of peripheral aperture is more than or equal to the number of pulling rope, respectively leading in described first group of pulling rope in described first group of pulling rope
Stay cord passes respectively from the respective peripheral aperture of described first induction element.
11. conduits as described in claim 9 or 10, it is characterised in that also include being fixed on described second bendable tune
At least one second induction element, each at least one second induction element described have one central authorities macropore and multiple outside
Enclosing aperture, described second bendable tune passes from the central macropore of described second induction element, described second induction element
The number of multiple peripheral apertures is more than or equal in number and described second group of pulling rope of pulling rope in described first group of pulling rope
The sum of the number of pulling rope, each pulling rope in described first group of pulling rope and each pulling rope in described second group of pulling rope
Pass from the respective peripheral aperture of described second induction element respectively.
12. conduits as claimed in claim 1, it is characterised in that also include the radiopaque labelling being positioned at described head, be used for
Indicate the direction of motion of described head.
13. conduits as claimed in claim 12, it is characterised in that described radiopaque labelling includes having different bearing of trend
The first mark part and the second mark part, and length, width and the shape of described first mark part at least one
Different from described second mark part.
14. conduits as claimed in claim 1, it is characterised in that described catheter main body has a central bore and multiple periphery
Chamber, described central canal is connected with described central bore, and described least one set pulling rope is from the plurality of peripheral chamber
Pass in one or more.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610218142.4A CN105903117B (en) | 2016-04-08 | 2016-04-08 | Catheter tube |
| PCT/CN2017/079527 WO2017173995A1 (en) | 2016-04-08 | 2017-04-06 | Catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610218142.4A CN105903117B (en) | 2016-04-08 | 2016-04-08 | Catheter tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105903117A true CN105903117A (en) | 2016-08-31 |
| CN105903117B CN105903117B (en) | 2022-07-05 |
Family
ID=56744943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610218142.4A Active CN105903117B (en) | 2016-04-08 | 2016-04-08 | Catheter tube |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105903117B (en) |
| WO (1) | WO2017173995A1 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106419990A (en) * | 2016-10-27 | 2017-02-22 | 上海心玮医疗科技有限公司 | Delivery sheath body and left atrial appendage occluder delivery system |
| WO2017173995A1 (en) * | 2016-04-08 | 2017-10-12 | 上海庆之医疗科技有限公司 | Catheter |
| CN108837275A (en) * | 2018-07-17 | 2018-11-20 | 东北大学 | A kind of blood vessel interposing catheter of the stiffness variable based on line driving |
| CN110496296A (en) * | 2019-08-06 | 2019-11-26 | 高杨 | The controllable deflecting interventional guide wire of extensive angle |
| CN110575604A (en) * | 2019-10-14 | 2019-12-17 | 苏州法兰克曼医疗器械有限公司 | medical instrument with angle adjusting device |
| CN111150921A (en) * | 2020-01-22 | 2020-05-15 | 上海庆之医疗科技有限公司 | Intravascular interventional robot, catheter and intravascular interventional system |
| CN112618919A (en) * | 2020-12-09 | 2021-04-09 | 华中科技大学同济医学院附属协和医院 | Three-cavity air bag uterus water-through pipe |
| CN112843437A (en) * | 2021-02-03 | 2021-05-28 | 深圳市第二人民医院(深圳市转化医学研究院) | Anti-leakage thoracic and abdominal cavity drainage tube |
| WO2023093901A1 (en) * | 2021-11-29 | 2023-06-01 | 广东埃纳生医学科技有限公司 | Tracheal intubation assist structure |
| CN116271422A (en) * | 2023-03-29 | 2023-06-23 | 极限人工智能有限公司 | Catheter for vascular intervention robot and vascular intervention robot |
| WO2024114363A1 (en) * | 2022-12-02 | 2024-06-06 | 先健科技(深圳)有限公司 | Bend-adjustable delivery system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115844544B (en) * | 2023-02-16 | 2023-08-04 | 极限人工智能有限公司 | Interventional robot catheter bending control method, system, equipment and storage medium |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5267982A (en) * | 1988-04-29 | 1993-12-07 | C. R. Bard, Inc. | Variable shaped catheter system and method for catheterization |
| US5876373A (en) * | 1997-04-04 | 1999-03-02 | Eclipse Surgical Technologies, Inc. | Steerable catheter |
| US20010039413A1 (en) * | 1998-05-05 | 2001-11-08 | Bowe Wade A. | Preformed steerable catheter with movable outer sleeve and method for use |
| US20030109852A1 (en) * | 2001-12-11 | 2003-06-12 | Cardiac Pacemakers, Inc. | Deflectable telescoping guide catheter |
| US6743219B1 (en) * | 2000-08-02 | 2004-06-01 | Cordis Corporation | Delivery apparatus for a self-expanding stent |
| JP2005312726A (en) * | 2004-04-30 | 2005-11-10 | Piolax Medical Device:Kk | Catheter |
| US20080139999A1 (en) * | 2004-05-17 | 2008-06-12 | C.R. Bard, Inc. | Articulated Catheter |
| CN201256953Y (en) * | 2008-07-11 | 2009-06-17 | 贾罗琦 | Any-direction controllable bent endoscope plastics hinge without metal snake-bone |
| CN101756749A (en) * | 2009-11-23 | 2010-06-30 | 中山大学附属第一医院 | Multi-functional guide wire for medical use |
| CN202020777U (en) * | 2011-03-31 | 2011-11-02 | 先健科技(深圳)有限公司 | Adjustable bent catheter |
| CN103372260A (en) * | 2012-04-19 | 2013-10-30 | 上海凯旦医疗科技有限公司 | Multi-segment controllable-bending interventional catheter |
| CN103799979A (en) * | 2012-11-14 | 2014-05-21 | 韦伯斯特生物官能(以色列)有限公司 | Catheter with flat beam deflection in tip |
| CN203694358U (en) * | 2012-12-15 | 2014-07-09 | 詹前策 | Guiding guide wire |
| WO2015010963A1 (en) * | 2013-07-23 | 2015-01-29 | The Provost, Fellows, Foundation Scholars, And The Other Members Of Board, Of The College Of The Holy And Undivided Trinity Of Queen Elizabeth, Near Dublin | A treatment device for internally treating a vessel within a body |
| CN205698858U (en) * | 2016-04-08 | 2016-11-23 | 上海庆之医疗科技有限公司 | Conduit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5013547B2 (en) * | 2009-06-16 | 2012-08-29 | 朝日インテック株式会社 | Medical guidewire |
| US10004877B2 (en) * | 2012-05-07 | 2018-06-26 | St. Jude Medical, Atrial Fibrillation Division, Inc. | Deflectable catheter shaft section, catheter incorporating same, and method of manufacturing same |
| CN105903117B (en) * | 2016-04-08 | 2022-07-05 | 上海庆之医疗科技有限公司 | Catheter tube |
-
2016
- 2016-04-08 CN CN201610218142.4A patent/CN105903117B/en active Active
-
2017
- 2017-04-06 WO PCT/CN2017/079527 patent/WO2017173995A1/en active Application Filing
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5267982A (en) * | 1988-04-29 | 1993-12-07 | C. R. Bard, Inc. | Variable shaped catheter system and method for catheterization |
| US5876373A (en) * | 1997-04-04 | 1999-03-02 | Eclipse Surgical Technologies, Inc. | Steerable catheter |
| US20010039413A1 (en) * | 1998-05-05 | 2001-11-08 | Bowe Wade A. | Preformed steerable catheter with movable outer sleeve and method for use |
| US6743219B1 (en) * | 2000-08-02 | 2004-06-01 | Cordis Corporation | Delivery apparatus for a self-expanding stent |
| US20030109852A1 (en) * | 2001-12-11 | 2003-06-12 | Cardiac Pacemakers, Inc. | Deflectable telescoping guide catheter |
| JP2005312726A (en) * | 2004-04-30 | 2005-11-10 | Piolax Medical Device:Kk | Catheter |
| US20080139999A1 (en) * | 2004-05-17 | 2008-06-12 | C.R. Bard, Inc. | Articulated Catheter |
| CN201256953Y (en) * | 2008-07-11 | 2009-06-17 | 贾罗琦 | Any-direction controllable bent endoscope plastics hinge without metal snake-bone |
| CN101756749A (en) * | 2009-11-23 | 2010-06-30 | 中山大学附属第一医院 | Multi-functional guide wire for medical use |
| CN202020777U (en) * | 2011-03-31 | 2011-11-02 | 先健科技(深圳)有限公司 | Adjustable bent catheter |
| CN103372260A (en) * | 2012-04-19 | 2013-10-30 | 上海凯旦医疗科技有限公司 | Multi-segment controllable-bending interventional catheter |
| CN103799979A (en) * | 2012-11-14 | 2014-05-21 | 韦伯斯特生物官能(以色列)有限公司 | Catheter with flat beam deflection in tip |
| CN203694358U (en) * | 2012-12-15 | 2014-07-09 | 詹前策 | Guiding guide wire |
| WO2015010963A1 (en) * | 2013-07-23 | 2015-01-29 | The Provost, Fellows, Foundation Scholars, And The Other Members Of Board, Of The College Of The Holy And Undivided Trinity Of Queen Elizabeth, Near Dublin | A treatment device for internally treating a vessel within a body |
| CN205698858U (en) * | 2016-04-08 | 2016-11-23 | 上海庆之医疗科技有限公司 | Conduit |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017173995A1 (en) * | 2016-04-08 | 2017-10-12 | 上海庆之医疗科技有限公司 | Catheter |
| CN106419990A (en) * | 2016-10-27 | 2017-02-22 | 上海心玮医疗科技有限公司 | Delivery sheath body and left atrial appendage occluder delivery system |
| CN108837275A (en) * | 2018-07-17 | 2018-11-20 | 东北大学 | A kind of blood vessel interposing catheter of the stiffness variable based on line driving |
| CN110496296A (en) * | 2019-08-06 | 2019-11-26 | 高杨 | The controllable deflecting interventional guide wire of extensive angle |
| CN110575604A (en) * | 2019-10-14 | 2019-12-17 | 苏州法兰克曼医疗器械有限公司 | medical instrument with angle adjusting device |
| CN111150921A (en) * | 2020-01-22 | 2020-05-15 | 上海庆之医疗科技有限公司 | Intravascular interventional robot, catheter and intravascular interventional system |
| CN112618919A (en) * | 2020-12-09 | 2021-04-09 | 华中科技大学同济医学院附属协和医院 | Three-cavity air bag uterus water-through pipe |
| CN112843437A (en) * | 2021-02-03 | 2021-05-28 | 深圳市第二人民医院(深圳市转化医学研究院) | Anti-leakage thoracic and abdominal cavity drainage tube |
| WO2023093901A1 (en) * | 2021-11-29 | 2023-06-01 | 广东埃纳生医学科技有限公司 | Tracheal intubation assist structure |
| WO2024114363A1 (en) * | 2022-12-02 | 2024-06-06 | 先健科技(深圳)有限公司 | Bend-adjustable delivery system |
| CN116271422A (en) * | 2023-03-29 | 2023-06-23 | 极限人工智能有限公司 | Catheter for vascular intervention robot and vascular intervention robot |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105903117B (en) | 2022-07-05 |
| WO2017173995A1 (en) | 2017-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105903117A (en) | Conduit | |
| CN205698858U (en) | Conduit | |
| JP7004772B2 (en) | Steerable catheter with pull wire | |
| US20220378405A1 (en) | Braided hemostasis shaft for improved torsional response | |
| CN109567991B (en) | Conveying sheath | |
| CN101933821B (en) | Mciro-catheter | |
| CN110292464A (en) | Adjustable bending intervenes valve delivery system | |
| US20040116832A1 (en) | Catheter arrangement | |
| US20110313402A1 (en) | Catheter guide | |
| CN109906099A (en) | Equipment for introducing and manipulating multiple telescoping catheters | |
| US20030009208A1 (en) | Torqueable soft tip medical device and method of usage | |
| CN109715243A (en) | Endovascular device delivery catheter | |
| CN107666884A (en) | Eccentric tissue anchors with tensional element | |
| CN109689147A (en) | Adjustable bending sheath tube and medical instrument | |
| CN104958824A (en) | Guiding catheter | |
| CN103655004A (en) | Implant conveying system | |
| WO2021219074A1 (en) | Covered stent | |
| RU2370224C2 (en) | Intralumen surgical delivery system | |
| WO2013161764A1 (en) | Operation member | |
| US8603035B2 (en) | Catheter | |
| CN114681755A (en) | Adjustable bent conduit and adjustable bending device | |
| CN104224314A (en) | Guide catheter | |
| CN218961553U (en) | Adjustable curved sheath pipe assembly | |
| CN111803778A (en) | Method of manufacturing an elongated catheter with multiple sensors for three-dimensional positioning of the catheter | |
| CN216319398U (en) | Adjustable bent conduit and adjustable bending device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |