CN114099916A - Micro-catheter - Google Patents
Micro-catheter Download PDFInfo
- Publication number
- CN114099916A CN114099916A CN202111402600.7A CN202111402600A CN114099916A CN 114099916 A CN114099916 A CN 114099916A CN 202111402600 A CN202111402600 A CN 202111402600A CN 114099916 A CN114099916 A CN 114099916A
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- China
- Prior art keywords
- bending control
- bending
- pipe body
- control ring
- inner layer
- 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.)
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- 238000005452 bending Methods 0.000 claims abstract description 226
- 238000003466 welding Methods 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 6
- 239000002985 plastic film Substances 0.000 claims description 3
- 229920006255 plastic film Polymers 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 3
- 210000004204 blood vessel Anatomy 0.000 abstract description 8
- 230000002792 vascular Effects 0.000 description 5
- 230000009466 transformation Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000001537 neural effect Effects 0.000 description 1
- 230000002485 urinary effect Effects 0.000 description 1
Images
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
- A61M25/0045—Catheters; Hollow probes characterised by structural features multi-layered, e.g. coated
-
- 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
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
-
- 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
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M2025/0042—Microcatheters, cannula or the like having outside diameters around 1 mm or less
-
- 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
Abstract
The invention discloses a micro catheter, which comprises a catheter body and an operating part, wherein the operating part is arranged on the catheter body; the pipe body comprises an inner layer and an outer layer which are mutually attached, and the inner layer is provided with a channel; a first bending control ring and a second bending control ring are arranged between the two layers and are arranged at intervals along the axis of the pipe body; the two bending control rings are provided with a proximal end and a distal end, the proximal ends are respectively fixed with bending control wires, the bending control wires on the two bending control rings are arranged in an angle, and the free ends of the bending control wires are arranged in the operation part; the operation part controls the tightening degree of the bending control wire, adjusts the inclination direction of the corresponding bending control ring, adjusts the bending angles of the near end and the far end of the tube body, and realizes the deflection of the tube body in the three-dimensional direction. The advantages of the invention are embodied in that: the bending control device has the advantages that the bending control device adopts at least two bending control rings, is suitable for multi-section and continuous bending blood vessels, bends the pipe body into at least three sections, realizes deflection of the pipe body in the three-dimensional direction, is suitable for various blood vessels, enlarges the practical range, simultaneously reduces the technical requirements, and improves the working efficiency.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a micro catheter with a bending control device.
Background
Microcatheters, a common interventional medical device, need to be able to control bending accurately and easily for delivery to a target site in body tissue via various complex vascular structures in conjunction with various medical imaging devices, minimizing damage and impact to neural tissue, and ultimately approaching the target site as closely as possible.
The device that bends needs to use far and near accuse of pipe often in the current operations such as being used for urinary system, heart, and the device includes the pipe body among the prior art, and this internal fixation is provided with and only has one accuse curved ring, is connected with the accuse curved seal wire on the accuse curved ring to and the control accuse curved seal wire operating portion of direction of bending. In the technical scheme, the operation part controls the body to deflect on only one plane, and the catheter is delivered into the blood vessel and reaches a focus. In addition, since the prior art has only one bending control ring, when the catheter is bent according to the vascular access 100, only the bending shown in fig. 1a can be realized, and there is a certain limitation, for example, the technical solution disclosed in chinese patent 202010217313.8. As shown in the attached figure 1b, when there is continuous multi-section bending, or because of the distance between the bending sections is short, this kind of technical scheme causes the condition of the catheter body extrusion or stabbing the vascular wall because of unable adaptation vascular passageway of bending in time, further causes harmful effects to the patient.
To solve the above problems, designing a complex microcatheter with a bend control device is an important technical problem to be solved by those skilled in the art.
Disclosure of Invention
The present invention is directed to solving the above problems of the prior art and to providing a microcatheter.
The purpose of the invention is realized by the following technical scheme:
a microcatheter comprises a tube body, and an operation part arranged at the near end of the tube body; the pipe body comprises an inner layer and an outer layer which are mutually attached, the inner layer is provided with a channel, two bending control rings are arranged between the inner layer and the outer layer and respectively comprise a first bending control ring and a second bending control ring, and the first bending control ring and the second bending control ring are arranged at intervals along the axis of the pipe body; the first bending control ring and the second bending control ring are respectively provided with a near end and a far end, bending control wires are respectively fixed at the near ends, the bending control wires on the first bending control ring and the bending control wires on the second bending control ring are arranged in an angle, and the free ends of the bending control wires are arranged in the operation part; the operation parts respectively control the tightening degree of the bending control wires, the inclination directions of the bending control rings corresponding to the bending control wires are adjusted, the bending angles of the near end and the far end of the pipe body are further adjusted, and deflection of the pipe body in the three-dimensional direction is achieved.
Preferably, the first bending control ring and the second bending control ring are welded and fixed on the outer wall of the inner layer.
Preferably, the angle is in the range of 0 ° to 360 °.
Preferably, the proximal end of the loop has at least two welds, and the bend-controlling wire is selectively welded to any of the welds.
Preferably, the proximal end of the loop has four welds at 90 ° to which the bend-controlling wire is selectively welded.
Preferably, the bending control ring is slidably sleeved on the outer wall of the inner layer and slides along the axial direction of the pipe body.
Preferably, the inner layer is provided with a limiting block in an outward protruding mode, and the bending control ring slides in a range limited by the limiting block.
Preferably, the limiting block is formed by punching an inner layer.
Preferably, the operating part comprises a handle and knobs which are used for being connected with and controlling the bending control wires respectively; the knob is arranged on the handle and rotates along the circumferential surface direction of the handle.
Preferably, the inner layer is a metal wire layer, the outer layer is a medical plastic film layer, and the bending control wire is a metal wire.
A microcatheter comprises a tube body, and an operation part arranged at the near end of the tube body; the pipe body comprises an inner layer and an outer layer which are mutually attached, the inner layer is provided with a channel, at least two bending control rings are arranged between the inner layer and the outer layer, and the bending control rings are arranged at intervals along the axis of the pipe body; the bending control rings are provided with a near end and a far end, bending control wires are respectively fixed on the near ends of the bending control rings, the bending control wires on the adjacent bending control rings are arranged in an angle mode, and the free ends of the bending control wires are arranged in the operation part; the operation parts respectively control the tightening degree of the bending control wires, the inclination directions of the bending control rings corresponding to the bending control wires are adjusted, the bending angles of the near end and the far end of the pipe body are further adjusted, and deflection of the pipe body in the three-dimensional direction is achieved.
Preferably, the bending control rings are welded and fixed on the outer wall of the inner layer; or the bending control ring can be slidably sleeved on the outer wall of the inner layer, a limiting block is arranged on the inner layer in an outwards protruding mode, and the bending control ring slides along the axis direction of the pipe body within the range limited by the limiting block.
Preferably, the proximal end of the loop has at least two welds, and the bend-controlling wire is selectively welded to any of the welds.
A microcatheter comprises a tube body, and an operation part arranged at the near end of the tube body; the pipe body comprises an inner layer and an outer layer which are mutually attached, the inner layer is provided with a channel, two bending control rings are arranged between the inner layer and the outer layer and respectively comprise a first bending control ring and a second bending control ring, and the first bending control ring and the second bending control ring are arranged at intervals along the axis of the pipe body; the first bending control ring and the second bending control ring are respectively provided with a near end and a far end, bending control wires are respectively fixed at the near ends, the bending control wires on the first bending control ring and the bending control wires on the second bending control ring are arranged in an angle, and the free ends of the bending control wires are arranged in the operation part; the operation parts respectively control the tightening degree of the bending control wires, the inclination directions of the bending control rings corresponding to the bending control wires are adjusted, the bending angles of the near end and the far end of the pipe body are further adjusted, the pipe body is folded into a first pipe body, a second pipe body and a third pipe body through the two bending control rings, and the non-intersection of the axis space of the first pipe body and the axis space of the third pipe body is achieved.
The technical scheme of the invention has the advantages that:
the bending control device adopts at least two bending control rings, is suitable for multi-section and continuous bending blood vessels, bends a pipe body into a multi-section form so as to realize the deflection of the pipe body in the three-dimensional direction, is suitable for various blood vessels, enlarges the practical range, reduces the technical requirement and improves the working efficiency;
the bending control ring is arranged on the inner tube in a sliding manner, so that the bending distance of the tube body can be controlled in time according to the internal form of the blood vessel, the actual requirement of the blood vessel is met, the operation and the control of a doctor are facilitated, and the working efficiency is improved;
the bending control rings are provided with bending control wires, each bending control wire corresponds to one knob, so that the bending control rings corresponding to different bending control wires can be distinguished conveniently, the angle between adjacent bending control wires is adjusted through the knobs, and the phenomenon that work consumes long time due to misoperation and even brings adverse effects to patients is avoided.
Drawings
FIG. 1 a: a vascular map having a single folded configuration;
FIG. 1 b: a blood vessel structure diagram having a plurality of bending forms;
FIG. 2: an exploded view of a preferred embodiment of the present invention;
FIG. 3: a partial cross-sectional view of a preferred embodiment of the invention;
FIG. 4: the structure of the pipe body of the preferred embodiment of the invention.
Detailed Description
Objects, advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments. The embodiments are merely exemplary for applying the technical solutions of the present invention, and any technical solution formed by replacing or converting the equivalent thereof falls within the scope of the present invention claimed.
In the description of the schemes, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the embodiment, the operator is used as a reference, and the direction close to the operator is a proximal end, and the direction away from the operator is a distal end.
As shown in fig. 2, the present invention discloses a microcatheter comprising a tube 1 and an operation part 2 disposed at a proximal end of the tube 1. As shown in fig. 4, the pipe body 1 comprises an inner layer 12 and an outer layer 13 which are attached to each other; wherein the inner layer 12 has channels 11. The inner layer 12 is a metal wire layer, and the outer layer 13 is a medical plastic film layer.
As shown in fig. 2 to 4, in the first embodiment: be provided with two accuse loopers 3 between inlayer 12 and the skin 13, two accuse looper 3 is first accuse looper 31 and second accuse looper 32 respectively, just first accuse looper 31 and the equal welded fastening of second accuse looper 32 are in on the outer wall of inlayer 12. The first bending control ring 31 and the second bending control ring 32 are arranged along the axis of the tube body 1 at intervals, that is, a certain distance is formed between the first bending control ring 31 and the second bending control ring 32, wherein the first bending control ring 31 is preferably arranged at the far end of the tube body 1, and the second bending control ring 32 is arranged at the near end of the tube body 1. The first and second bending control rings 31, 32 are cylindrical, both having a proximal end (bottom end of the cylinder) and a distal end (top end of the cylinder).
Furthermore, the proximal ends of the first bending control ring 31 and the second bending control ring 32 are respectively fixed with a bending control wire 30, and the bending control wire 30 is a metal wire. Specifically, the proximal ends of the first bending control ring 31 and the second bending control ring 32 are provided with at least two welding points 300, and the specific number of the welding points 300 is not limited herein. The bending control wire 30 can be selectively welded to any welding point 300, that is, each welding point 300 can be welded with a corresponding bending control wire 30, and at this time, one bending control wire 30 is arranged on each first bending control ring 31 and/or each second bending control ring 32; or only one of the welding points 300 on the same bending control ring 3 is provided with the bending control wire 30, and at this time, only one bending control wire 30 is provided on the first bending control ring 31 and/or the second bending control ring 32.
More preferably, the proximal ends of the first bending control ring 31 and the second bending control ring 32 have four welding points 300 arranged at an angle of 90 °, and similarly, the bending control wire 30 can be selectively welded to any of the welding points 300. In addition, in order to facilitate the rapid operation of the first bending control wire 31 or the second bending control wire 32 and avoid the possibility of misoperation, the bending control wire 30 on the first bending control ring 31 and the bending control wire 30 on the second bending control ring 32 are preferably arranged in an angle, the angle range is 0-360 degrees, and more preferably, the angle between the two bending control wires 30 is 90 degrees.
Second embodiment: on the basis of the first embodiment, in order to facilitate the adjustment of the bending position of the pipe body 1, the bending control ring 3 is slidably sleeved on the outer wall of the inner layer 12 and slides along the axial direction of the pipe body 1. In addition, in order to facilitate the operation and control of the doctor, it is preferable that a stop block 121 is provided on the inner layer 12 in a protruding manner, and the bending-control ring 3 slides within the range defined by the stop block 121, that is, the first bending-control ring 31 and the second bending-control ring 32 slide along the axial direction of the tube body 1 within the range defined by the stop block 121. The limiting block 121 is formed by stamping the inner layer 12.
The free ends of the first bending-control wire 30 in the first and second embodiments are disposed in the operating portion 2. The operating part 2 includes a handle 21 and knobs 22 for individually connecting and controlling the bending wires 30, respectively. Wherein the knob 22 is disposed on the handle 21 and rotates along the circumferential direction of the handle 21. The number of the knobs 22 is equal to that of the bending control wires 30, and the knobs 22 correspond to one another, that is, the tightening degrees of the bending control wires 30 are respectively controlled by rotating different knobs 22, and the inclination directions of the bending control rings 3 corresponding to the tightening degrees are adjusted, so that the axes of the first bending control rings 31 and/or the second bending control rings 32 and the axis of the pipe body 1 form an included angle; and then the bending angles of the near end and the far end of the tube body 1 are adjusted to realize the deflection of the tube body 1 in the three-dimensional direction, namely the tube body 1 is bent in the three directions, and the near end and the far end are enabled to be located on the non-intersecting plane.
The third embodiment: on the basis of the first and second embodiments, the change is made that at least two bending control rings 3 are arranged between the inner layer 12 and the outer layer 13, that is, two, three or more bending control rings 3 may be arranged, and the specific number thereof may be adjusted according to the requirement, which is not described herein again. The bending control rings 3 are all welded and fixed on the outer wall of the inner layer 12, specifically, the proximal ends of the bending control rings 3 are provided with at least two welding points 300, and the bending control wires 30 can be selectively welded on any of the welding points 300.
Or the bending control ring 3 can be slidably sleeved on the outer wall of the inner layer 12, the inner layer 12 is provided with a limiting block 121 in an outward protruding mode, and the bending control ring 3 slides along the axis direction of the pipe body 1 within the range limited by the limiting block 121. The bending control rings 3 are arranged at intervals along the axis of the pipe body 1. The bending control rings 3 are provided with a near end and a far end, the near ends of the bending control rings are respectively fixed with bending control wires 30, the bending control wires 30 on the adjacent bending control rings 3 are arranged at an angle, the angle range is 0-360 degrees, and more preferably, the two bending control wires 30 are arranged at 90 degrees.
The free ends of the bending control wires 30 are arranged in the operation part 2; the structure of the operation part 2 is described above, and is not described herein. The operation part 2 controls the tightening degree of the bending control wires 30 respectively, adjusts the inclination direction of the bending control rings 3 corresponding to the tightening degree, and then adjusts the bending angles of the near end and the far end of the pipe body 1, so that the pipe body 1 deflects in the three-dimensional direction. The deflection in the tilting direction and the three-dimensional direction is described above and will not be described herein.
The fourth embodiment: a microcatheter comprises a tubular body 1 as disclosed in the first to third embodiments, and an operation part 2 provided at a proximal end of the tubular body 1. The pipe body 1 comprises an inner layer 12 and an outer layer 13 which are attached to each other, the inner layer is provided with a channel 11, two bending control rings 3 are arranged between the inner layer 12 and the outer layer 13, and the pipe body 1 is folded into a first pipe body 101, a second pipe body 102 and a third pipe body 103 which are shown in fig. 3 through the two bending control rings 3. The two bending control rings 3 are respectively a first bending control ring 31 and a second bending control ring 32 which are arranged at intervals along the axis of the pipe body 1. The first bending control ring 31 and the second bending control ring 32 both have a proximal end and a distal end, the proximal ends of which are respectively fixed with a bending control wire 30, the bending control wire 30 on the first bending control ring 31 and the bending control wire 30 on the second bending control ring 32 are angularly disposed, and the free ends of the bending control wires 30 are disposed in the operation portion 2 (the structure of the operation portion 2 is the same as that of the first to third embodiments, and no further description is given here). The operation portion 2 controls the tightening degree of the bending control wires 30, adjusts the inclination direction of the corresponding bending control ring 3 (which is the inclination direction described above and is not described herein), and further adjusts the bending angles of the proximal end and the distal end of the tube body 1, so that the axis spaces of the first tube body 101 and the third tube body 103 are not intersected.
The invention has various embodiments, and all technical solutions formed by adopting equivalent transformation or equivalent transformation are within the protection scope of the invention.
Claims (14)
1. The microcatheter comprises a tube body (1) and an operation part (2) arranged at the near end of the tube body (1); the method is characterized in that: the pipe body (1) comprises an inner layer (12) and an outer layer (13) which are mutually attached, the inner layer is provided with a channel (11), two bending control rings (3) are arranged between the inner layer (12) and the outer layer (13) and are respectively a first bending control ring (31) and a second bending control ring (32), and the first bending control ring (31) and the second bending control ring (32) are arranged at intervals along the axis of the pipe body (1); the first bending control ring (31) and the second bending control ring (32) are respectively provided with a near end and a far end, the near ends are respectively fixed with a bending control wire (30), the bending control wires (30) on the first bending control ring (31) and the bending control wires (30) on the second bending control ring (32) are arranged in an angle, and the free ends of the bending control wires (30) are arranged in the operation part (2); the operation part (2) respectively controls the tightening degree of the bending control wire (30), adjusts the inclination direction of the corresponding bending control ring (3), and further adjusts the bending angles of the near end and the far end of the pipe body (1), so that the pipe body (1) deflects in the three-dimensional direction.
2. The microcatheter of claim 1, wherein: the first bending control ring (31) and the second bending control ring (32) are welded and fixed on the outer wall of the inner layer (12).
3. The microcatheter of claim 1, wherein: the angle range is 0-360 deg..
4. The microcatheter of claim 1, wherein: the proximal end of the bending control ring (3) is provided with at least two welding points (300), and the bending control wire (30) can be selectively welded on any welding point (300).
5. The microcatheter of claim 4, wherein: the proximal end of the bending control ring (3) is provided with four welding points (300) arranged at an angle of 90 degrees, and the bending control wire (30) can be selectively welded on the welding points (300).
6. The microcatheter of claim 1, wherein: the bending control ring (3) is slidably sleeved on the outer wall of the inner layer (12) and slides along the axis direction of the pipe body (1).
7. The microcatheter of claim 6, wherein: the inner layer (12) is provided with a limiting block (121) in an outward protruding mode, and the bending control ring (3) slides in the range limited by the limiting block (121).
8. The microcatheter of claim 7, wherein: the limiting block (121) is formed by punching an inner layer.
9. The microcatheter of claim 1, wherein: the operating part (2) comprises a handle (21) and knobs (22) which are used for being connected with the bending control wires (30) independently and controlling the bending control wires respectively; the knob (22) is arranged on the handle (21) and rotates along the circumferential direction of the handle (21).
10. The microcatheter of claim 1, wherein: the inner layer (12) is a metal wire layer, the outer layer (13) is a medical plastic film layer, and the bending control wire (30) is a metal wire.
11. The microcatheter comprises a tube body (1) and an operation part (2) arranged at the near end of the tube body (1); the method is characterized in that: the pipe body (1) comprises an inner layer (12) and an outer layer (13) which are mutually attached, the inner layer is provided with a channel (11), at least two bending control rings (3) are arranged between the inner layer (12) and the outer layer (13), and the bending control rings (3) are mutually arranged at intervals along the axis of the pipe body (1); the bending control rings (3) are provided with a near end and a far end, bending control wires (30) are respectively fixed on the near ends of the bending control rings, the bending control wires (30) on the adjacent bending control rings (3) are arranged in an angle mode, and the free ends of the bending control wires (30) are arranged in the operation part (2); the operation part (2) respectively controls the tightening degree of the bending control wire (30), adjusts the inclination direction of the corresponding bending control ring (3), and further adjusts the bending angles of the near end and the far end of the pipe body (1), so that the pipe body (1) deflects in the three-dimensional direction.
12. The microcatheter of claim 11, wherein: the bending control rings (3) are welded and fixed on the outer wall of the inner layer (12); or the bending control ring (3) can be slidably sleeved on the outer wall of the inner layer (12), the inner layer (12) is provided with a limiting block (121) in an outwards protruding mode, and the bending control ring (3) slides along the axis direction of the pipe body (1) within the range limited by the limiting block (121).
13. The microcatheter of claim 12, wherein: the proximal end of the bending control ring (3) is provided with at least two welding points (300), and the bending control wire (30) can be selectively welded on any welding point (300).
14. The microcatheter comprises a tube body (1) and an operation part (2) arranged at the near end of the tube body (1); the method is characterized in that: the pipe body (1) comprises an inner layer (12) and an outer layer (13) which are mutually attached, the inner layer is provided with a channel (11), two bending control rings (3) are arranged between the inner layer (12) and the outer layer (13) and are respectively a first bending control ring (31) and a second bending control ring (32), and the first bending control ring (31) and the second bending control ring (32) are arranged at intervals along the axis of the pipe body (1); the first bending control ring (31) and the second bending control ring (32) are respectively provided with a near end and a far end, the near ends are respectively fixed with a bending control wire (30), the bending control wires (30) on the first bending control ring (31) and the bending control wires (30) on the second bending control ring (32) are arranged in an angle, and the free ends of the bending control wires (30) are arranged in the operation part (2); the operation part (2) respectively controls the tightening degree of the bending control wires (30), the inclination directions of the corresponding bending control rings (3) are adjusted, the bending angles of the near end and the far end of the pipe body (1) are further adjusted, the pipe body (1) is folded into a first pipe body (101), a second pipe body (102) and a third pipe body (103) through the two bending control rings (3), and the axis space non-intersection of the first pipe body (101) and the third pipe body (103) is achieved.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021228016843 | 2021-11-16 | ||
| CN202122801684 | 2021-11-16 |
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| CN114099916A true CN114099916A (en) | 2022-03-01 |
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| CN202111402600.7A Pending CN114099916A (en) | 2021-11-16 | 2021-11-24 | Micro-catheter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116636854A (en) * | 2023-05-12 | 2023-08-25 | 心诺普医疗技术（北京）有限公司 | Three-dimensional curved mapping catheter |
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| FR2740688A1 (en) * | 1995-11-07 | 1997-05-09 | Tokendo Sarl | Video-endoscope with flexible connection tube and adjustable head |
| 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 |
| CN103706017A (en) * | 2013-12-27 | 2014-04-09 | 先健科技(深圳)有限公司 | Sheathing tube capable of being adjusted to be bent |
| CN107174724A (en) * | 2017-05-08 | 2017-09-19 | 杭州唯强医疗科技有限公司 | A kind of controllable adjustable bent catheter of deflection distance |
| CN108096679A (en) * | 2018-02-10 | 2018-06-01 | 葛俊丽 | A kind of interposing catheter of multistage controlled deflection |
| CN112515731A (en) * | 2019-09-19 | 2021-03-19 | 杭州唯强医疗科技有限公司 | Sectional type adjustable bending micro-catheter |
| CN112076379A (en) * | 2020-08-14 | 2020-12-15 | 北京邮电大学 | Hand-held multi-degree-of-freedom controllable intervention guide wire and intervention device |
| CN214679637U (en) * | 2020-11-30 | 2021-11-12 | 上海纽脉医疗科技有限公司 | Multi-dimensional steerable catheter system |
| CN112870528A (en) * | 2020-12-23 | 2021-06-01 | 上海御瓣医疗科技有限公司 | Medical multistage controllable bend adjusting pipe |
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| CN116636854A (en) * | 2023-05-12 | 2023-08-25 | 心诺普医疗技术（北京）有限公司 | Three-dimensional curved mapping catheter |
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