CN114099916B - Microcatheter - Google Patents
Microcatheter Download PDFInfo
- Publication number
- CN114099916B CN114099916B CN202111402600.7A CN202111402600A CN114099916B CN 114099916 B CN114099916 B CN 114099916B CN 202111402600 A CN202111402600 A CN 202111402600A CN 114099916 B CN114099916 B CN 114099916B
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- China
- Prior art keywords
- bending control
- bending
- control ring
- inner layer
- pipe body
- 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 235
- 238000003466 welding Methods 0.000 claims description 18
- 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
- 238000000034 method Methods 0.000 claims 3
- 210000004204 blood vessel Anatomy 0.000 abstract description 8
- 230000002792 vascular Effects 0.000 description 4
- 230000009466 transformation Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 210000000944 nerve tissue Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000002485 urinary effect Effects 0.000 description 1
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
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)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Abstract
The invention discloses a microcatheter, which comprises a tube body and an operation part; 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; both the two have a proximal end and a distal end, the proximal ends are respectively fixed with a bending control wire, the bending control wires on the two bending control rings are arranged at 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 proximal end and the distal end of the tube body, and realizes the deflection of the tube body in the three-dimensional direction. The invention has the advantages that: the bending control device has the advantages that at least two bending control rings are adopted, the bending control device is applicable to bent blood vessels in a multi-section mode and a continuous mode, the pipe body is bent into at least three sections, deflection of the pipe body in the three-dimensional direction is achieved, the bending control device is applicable to blood vessels of various types, practical range is enlarged, technical requirements are reduced, and working efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of medical appliances, and particularly relates to a microcatheter with a bending control device.
Background
As a common interventional medical device, a microcatheter needs to be able to precisely and conveniently control the bending, so as to deliver the microcatheter to a target site in an internal tissue via various complex vascular structures under the cooperation of various medical imaging devices, minimize the damage and influence on the nerve tissue, and finally approach the target site as much as possible.
The existing catheter far-near bending control device used in the operations of the urinary system, the heart and the like often needs to be used, the device in the prior art comprises a catheter body, a bending control ring is fixedly arranged in the body and only provided with a bending control guide wire, and an operation part for controlling the bending direction of the bending control guide wire is connected to the bending control ring. In this solution, the body is controlled by the operating portion to deflect only in one plane, and the catheter is delivered into the vessel and reaches the lesion. In addition, since the prior art has only one bending control ring, the catheter can only bend according to the vascular access 100 as shown in fig. 1a, and there is a limitation such as the technical solution disclosed in chinese patent 202010217313.8. As shown in fig. 1b, when there is bending in continuous multiple sections or the distance between the bending sections is short, the technical scheme cannot adapt to the bending channel of the blood vessel in time, so that the catheter body extrudes or stabs the blood vessel wall, and further adverse effects are caused to the patient.
To solve the above problems, designing a complicated 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 has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a microcatheter.
The aim of the invention is achieved by the following technical scheme:
A microcatheter comprises a tube body and an operating part arranged at the proximal 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 are respectively 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 proximal end and a distal end, the proximal ends of the first bending control ring and the second bending control ring are respectively fixed with a bending control wire, the bending control wires on the first bending control ring and the bending control wires on the second bending control ring are arranged at an angle, and the free ends of the bending control wires are respectively arranged in the operation part; the operation part respectively controls the tightening degree of the bending control wire, adjusts the inclination direction of the bending control ring corresponding to the tightening degree, and further adjusts the bending angles of the proximal end and the distal end of the tube body, so that the deflection of the tube body in the three-dimensional direction is realized.
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 ° -360 °.
Preferably, the proximal end of the bending control ring has at least two welding points, and the bending control wire is selectively welded to any of the welding points.
Preferably, the proximal end of the bending control ring is provided with four welding points arranged at an angle of 90 degrees, and the bending control wire is selectively welded on the welding points.
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 stamping an inner layer.
Preferably, the operation part comprises a handle and a knob for separately connecting and respectively controlling the bending control wires; the knob is arranged on the handle and rotates along the circumferential 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 operating part arranged at the proximal 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 mutually arranged at intervals along the axis of the pipe body; the bending control rings are respectively provided with a proximal end and a distal end, the proximal ends of the bending control rings are respectively fixed with bending control wires, the bending control wires on the adjacent bending control rings are arranged at an angle, and the free ends of the bending control wires are arranged in the operation part; the operation part respectively controls the tightening degree of the bending control wire, adjusts the inclination direction of the bending control ring corresponding to the tightening degree, and further adjusts the bending angles of the proximal end and the distal end of the tube body, so that the deflection of the tube body in the three-dimensional direction is realized.
Preferably, the bending control rings are welded and fixed on the outer wall of the inner layer; or the bending control ring is slidably sleeved on the outer wall of the inner layer, a limiting block is arranged on the inner layer in an outward 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 bending control ring has at least two welding points, and the bending control wire is selectively welded to any of the welding points.
A microcatheter comprises a tube body and an operating part arranged at the proximal 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 are respectively 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 proximal end and a distal end, the proximal ends of the first bending control ring and the second bending control ring are respectively fixed with a bending control wire, the bending control wires on the first bending control ring and the bending control wires on the second bending control ring are arranged at an angle, and the free ends of the bending control wires are respectively arranged in the operation part; the operation part respectively controls the tightening degree of the bending control wire, adjusts the inclination direction of the bending control ring corresponding to the tightening degree, and further adjusts the bending angles of the proximal end and the distal end of the pipe body, and the two bending control rings fold the pipe body into a first pipe body, a second pipe body and a third pipe body, so that the axial space of the first pipe body and the axial space of the third pipe body are disjoint.
The technical scheme of the invention has the advantages that:
The bending control device has the advantages that at least two bending control rings are adopted, the bending control device can be suitable for bent blood vessels in a multi-section mode and a continuous mode, the tube body is bent into a multi-section mode, deflection of the tube body in the three-dimensional direction is achieved, the bending control device is suitable for various blood vessels, the practical range is enlarged, meanwhile, the technical requirements are reduced, and the working efficiency is improved;
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 more closely met, the operation and control of doctors are facilitated, and the working efficiency is improved;
The control bending rings are provided with control bending wires, each control bending wire corresponds to one knob, so that the control bending rings corresponding to different control bending wires can be distinguished, the angles between adjacent control bending wires can be adjusted through the knobs, the time consumption of work caused by misoperation can be prevented, and adverse effects can be brought to patients.
Drawings
Fig. 1a: vascular structure with single bend configuration;
Fig. 1b: a vascular structure having a plurality of bent configurations;
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 present invention;
Fig. 4: construction of the tube body of the preferred embodiment of the present invention.
Detailed Description
The objects, advantages and features of the present invention are illustrated and explained by the following non-limiting description of preferred embodiments. These embodiments are only typical examples of the technical scheme of the invention, and all technical schemes formed by adopting equivalent substitution or equivalent transformation fall within the scope of the invention.
In the description of the embodiments, it should be noted that the positional or positional relationship indicated by the terms such as "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in the specific orientation, and thus are not to 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 scheme, the direction approaching the operator is the near end, and the direction separating from the operator is the far end, with reference to the operator.
As shown in fig. 2, the present invention discloses a microcatheter comprising a tube body 1 and an operating portion 2 provided at a proximal end of the tube body 1. As shown in fig. 4, the pipe body 1 comprises an inner layer 12 and an outer layer 13 which are mutually adhered; 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: two control bending rings 3 are arranged between the inner layer 12 and the outer layer 13, the two control bending rings 3 are a first control bending ring 31 and a second control bending ring 32 respectively, and the first control bending ring 31 and the second control bending ring 32 are welded and fixed on the outer wall of the inner layer 12. The first control loop 31 and the second control loop 32 are arranged at intervals along the axis of the tube body 1, that is, a certain distance is reserved between the first control loop 31 and the second control loop 32, wherein the first control loop 31 is preferably arranged at the distal end of the tube body 1, and the second control loop 32 is arranged at the proximal end of the tube body 1. The first control loop 31 and the second control loop 32 are cylindrical, both having a proximal end (bottom end of the cylinder) and a distal end (top end of the cylinder).
Further, 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 wires 30 are metal wires. Specifically, the proximal ends of the first bending control ring 31 and the second bending control ring 32 each have at least two welding points 300, and the specific number of the welding points 300 is not limited herein. The bending control wires 30 may be selectively welded to any of the welding points 300, that is, each welding point 300 may be welded with a corresponding bending control wire 30, and at this time, one bending control wire 30 is disposed on each of the first bending control ring 31 and/or the second bending control ring 32; or only one welding point 300 of all welding points 300 positioned on the same bending control ring 3 is provided with the bending control wire 30, and only one bending control wire 30 is positioned 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 disposed at an angle of 90 °, and similarly, the bending control wire 30 is selectively welded to any of the welding points 300. In addition, in order to facilitate the rapid operation of the first bending control ring 31 or the second bending control ring 32 and avoid the possibility of misoperation, the invention preferably sets the angle between 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, 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 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, for the convenience of operation and control of doctors, a limiting block 121 is preferably arranged on the inner layer 12 in an outward protruding manner, and the bending control ring 3 slides within the range defined by the limiting 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 limiting block 121. The limiting block 121 is stamped from the inner layer 12.
The free ends of the first bending control filaments 30 in the first and second embodiments are disposed in the operation 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 provided on the handle 21 and rotates in the circumferential direction of the handle 21. The number of the knobs 22 is equal to the number of the bending control wires 30, and the knobs 22 are in one-to-one correspondence, namely, the tightening degree of the bending control wires 30 is respectively controlled by rotating different knobs 22, and the inclination direction of the bending control ring 3 corresponding to the knobs is adjusted, so that the axes of the first bending control ring 31 and/or the second bending control ring 32 and the axis of the pipe body 1 form an included angle; and further, the bending angles of the proximal end and the distal end of the tube body 1 are adjusted, so that the deflection of the tube body 1 in the three-dimensional direction is realized, namely, the tube body 1 is bent in three directions, and the planes of the proximal end and the distal end are not intersected.
Third embodiment: the following changes are made on the basis of the first embodiment and the second embodiment, at least two bending control rings 3 are disposed between the inner layer 12 and the outer layer 13, that is, two, three or more bending control rings 3 may be disposed, and the specific number thereof may be adjusted according to the needs, which is not described herein. 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 are optionally welded on any welding point 300.
Or the bending control ring 3 is slidably sleeved on the outer wall of the inner layer 12, a limiting block 121 is arranged on the inner layer 12 in an outward protruding mode, and the bending control ring 3 slides along the axis direction of the pipe body 1 within a 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 respectively provided with a proximal end and a distal end, the proximal 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 all arranged in the operation part 2; the structure of the operation unit 2 is described above, and will not be described here. The operation part 2 controls the tightening degree of the bending control wire 30 respectively, adjusts the inclination direction of the bending control ring 3 corresponding to the tightening degree, and further adjusts the bending angles of the proximal end and the distal end of the tube body 1, so as to realize the deflection of the tube body 1 in the three-dimensional direction. The deflection in the oblique direction and the three-dimensional direction is described above, and will not be described here.
Fourth embodiment: a microcatheter comprising a tube body 1 as disclosed in the first to third embodiments, and an operating portion 2 provided at a proximal end of the tube body 1. 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 the two bending control rings 3 fold the pipe body 1 into a first pipe body 101, a second pipe body 102 and a third pipe body 103 shown in fig. 3. The two control loops 3 are a first control loop 31 and a second control loop 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 each have a proximal end and a distal end, the proximal ends thereof are respectively fixed with a bending control wire 30, an angle is formed between 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, and the free ends of the bending control wires 30 are both 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 details thereof are omitted herein). The operation part 2 controls the tightening degree of the bending control wire 30, adjusts the inclination direction of the bending control ring 3 corresponding to the tightening degree (the inclination direction is described above and is not described in detail here), and further adjusts the bending angles of the proximal end and the distal end of the tube body 1, so as to realize that the axial spaces of the first tube body 101 and the third tube body 103 are not intersected.
The invention has various embodiments, and all technical schemes formed by equivalent transformation or equivalent transformation fall within the protection scope of the invention.
Claims (7)
1. A microcatheter comprising a tube body (1) and an operating part (2) arranged at the proximal 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), a first bending control ring (31) and a second bending control ring (32) are respectively arranged, 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 proximal end and a distal end, the proximal ends of the first bending control ring and the second bending control ring are respectively fixed with a bending control wire (30), an angle is formed between 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), and the free ends of the bending control wires (30) are respectively 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 bending control ring (3) corresponding to the tightening degree, and further adjusts the bending angles of the proximal end and the distal end of the tube body (1) so as to realize the deflection of the tube body (1) in the three-dimensional direction; 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); the inner layer (12) is provided with a limiting block (121) in an outward protruding mode, and the bending control ring (3) slides in a range limited by the limiting block (121).
2. The microcatheter of claim 1, wherein: the limiting block (121) is formed by stamping an inner layer.
3. The microcatheter of claim 1, wherein: the operation part (2) comprises a handle (21) and a knob (22) which is used for being connected independently and controlling the bending control wires (30) respectively; the knob (22) is arranged on the handle (21) and rotates along the circumferential direction of the handle (21).
4. 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.
5. A microcatheter comprising a tube body (1) and an operating part (2) arranged at the proximal 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 respectively provided with a proximal end and a distal end, the proximal 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 in an angle, and the free ends of the bending control wires (30) are respectively 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 bending control ring (3) corresponding to the tightening degree, and further adjusts the bending angles of the proximal end and the distal end of the tube body (1) so as to realize the deflection of the tube body (1) in the three-dimensional direction; 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); the inner layer (12) is provided with a limiting block (121) in an outward protruding mode, and the bending control ring (3) slides in a range limited by the limiting block (121).
6. The microcatheter of claim 5, 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) is selectively welded on any welding point (300).
7. A microcatheter comprising a tube body (1) and an operating part (2) arranged at the proximal 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), a first bending control ring (31) and a second bending control ring (32) are respectively arranged, 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 proximal end and a distal end, the proximal ends of the first bending control ring and the second bending control ring are respectively fixed with a bending control wire (30), an angle is formed between 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), and the free ends of the bending control wires (30) are respectively 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 bending control ring (3) corresponding to the bending control wire, and further adjusts the bending angles of the proximal end and the distal end of the pipe body (1), and the two bending control rings (3) fold the pipe body (1) into a first pipe body (101), a second pipe body (102) and a third pipe body (103) so as to realize that the axial spaces of the first pipe body (101) and the third pipe body (103) are not intersected; 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); the inner layer (12) is provided with a limiting block (121) in an outward protruding mode, and the bending control ring (3) slides in a range limited by the limiting block (121).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122801684 | 2021-11-16 | ||
| CN2021228016843 | 2021-11-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114099916A CN114099916A (en) | 2022-03-01 |
| CN114099916B true CN114099916B (en) | 2024-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111402600.7A Active CN114099916B (en) | 2021-11-16 | 2021-11-24 | Microcatheter |
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| CN (1) | CN114099916B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116636854B (en) * | 2023-05-12 | 2024-03-19 | 心诺普医疗技术（北京）有限公司 | Three-dimensional curved mapping catheter |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| CN112773462A (en) * | 2021-03-05 | 2021-05-11 | 南京鼓楼医院 | Miniature catheter capable of necking and bending |
| 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 |
| 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 |
-
2021
- 2021-11-24 CN CN202111402600.7A patent/CN114099916B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112773462A (en) * | 2021-03-05 | 2021-05-11 | 南京鼓楼医院 | Miniature catheter capable of necking and bending |
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| CN114099916A (en) | 2022-03-01 |
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