CN115212428A - Interventional catheter - Google Patents
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- CN115212428A CN115212428A CN202210763819.8A CN202210763819A CN115212428A CN 115212428 A CN115212428 A CN 115212428A CN 202210763819 A CN202210763819 A CN 202210763819A CN 115212428 A CN115212428 A CN 115212428A
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- 230000033001 locomotion Effects 0.000 description 12
- 238000002560 therapeutic procedure Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 4
- 230000003902 lesion Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
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- 238000011084 recovery Methods 0.000 description 1
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- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- 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
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0133—Tip steering devices
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- 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
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0133—Tip steering devices
- A61M25/0147—Tip steering devices with movable mechanical means, e.g. pull wires
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Pulmonology (AREA)
- Anesthesiology (AREA)
- Biophysics (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
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Abstract
The application discloses intervene pipe relates to medical instrument technical field, the intervene pipe of this application, including the pipe body and the pipe seat of being connected with pipe body one end, the one end that the pipe seat was kept away from to the pipe body is the distal end, the extending direction along the pipe body is provided with the accuse curved silk on the lateral wall of pipe body, and the lateral wall fixed connection of the one end of just controlling curved silk and distal end, be provided with the transmission assembly who is connected with the accuse curved silk other end in the pipe seat, transmission assembly receives the pulling accuse curved silk so that the distal end is crooked. The application provides an intervene pipe can conveniently realize the multi-angle bending, can alleviate art person's manipulation strength moreover.
Description
Technical Field
The application relates to the technical field of medical equipment, in particular to an interventional catheter.
Background
Interventional therapy, which is an emerging therapeutic approach between surgical and medical treatment, includes both intravascular and extravascular interventions. After more than 30 years of development, the patient is called three-pillar department of surgery and medicine. In brief, the interventional therapy is a minimally invasive treatment method in which a tiny channel with a diameter of several millimeters is made on a blood vessel and skin or an original pipeline of a human body under the guidance of an imaging device (an angiography machine, a fluoroscopy machine, a CT, an MR, a B-ultrasound) to treat a local part of a focus without operating to expose the focus.
During the interventional therapy, the interventional catheter is an indispensable important consumable. In a conventional operation, an interventional catheter is inserted along a tiny channel or an original pipeline of a human body, so that the end of the interventional catheter reaches a focus, and usually, an operator directly controls the interventional catheter by hands or controls mechanical transmission structures such as knobs of a catheter holder or a handle part to realize the actions of advancing and retreating, rotating, bending the end and the like of the catheter. However, the operation of the catheter is a precise behavior, and needs to be performed with sufficient skill and accuracy, which not only has high requirements on skill and manipulation of an operator, but also tests the fatigue resistance of the operator for long-time operation, and moreover, the catheter in the prior art cannot precisely control the bending direction of the distal end, and cannot realize non-artificial controllable bending, so that the open end of the interventional catheter cannot be precisely controlled to reach and continuously aim at a focus in the whole operation process.
Disclosure of Invention
An object of the application is to provide an intervene pipe, can conveniently realize the multi-angle bending, can alleviate art person's manipulation strength moreover.
An embodiment of this application provides an intervene pipe on the one hand, including the pipe body and with the pipe seat that pipe body one end is connected, the one end that the pipe seat was kept away from to the pipe body is the distal end, is provided with the accuse curved silk along the extending direction of pipe body on the lateral wall of pipe body, and the lateral wall fixed connection of the one end of just controlling curved silk and distal end, be provided with in the pipe seat with the transmission assembly who controls the curved silk other end and be connected, transmission assembly is driven the pulling and is controlled curved silk so that the distal end is crooked.
As an implementable mode, the bending control wires comprise a plurality of, a plurality of transmission components are correspondingly arranged in the catheter base, and the connection points of the bending control wires and the far end are uniformly distributed on the side wall of the far end.
As an implementable mode, the side wall of the conduit seat is also provided with a quick-insertion structure, and the transmission assembly is connected with the driving source through the quick-insertion structure.
As an implementation manner, the transmission assembly includes a driving part and a driven part connected to the driving part, the other end of the bending control wire is connected to the driven part, and the driving part is driven to move to drive the driven part to move so that the driven part pulls the bending control wire.
As an implementable manner, the driving part comprises a screw, the driven part comprises a nut block in threaded connection with the screw, the other end of the bending control wire is connected with the nut block, and the screw is driven to rotate so that the nut block moves along the screw and pulls the bending control wire.
As an implementable mode, the transmission assembly further comprises a gear set fixedly connected with one end, far away from the catheter tube, of the screw rod, and the gear set is driven to rotate and drives the screw rod to rotate.
As an implementable mode, the driving part comprises a rotating shaft, the driven part comprises a wire spool fixedly connected with the rotating shaft, the other end of the bending control wire is fixedly connected with the wire spool, and the rotating shaft is driven to rotate to drive the wire spool to rotate so that the wire spool pulls the bending control wire.
As an implementable mode, the transmission assembly comprises a sliding groove and a sliding block arranged in the sliding groove, the sliding groove is fixedly connected to the inner side wall of the catheter seat, the other end of the bending control wire is connected with the sliding block, and the sliding block is driven to move in the sliding groove to pull the bending control wire.
As an implementable mode, the transmission assembly further comprises a connecting rod connected with the sliding block, the other end of the connecting rod is connected with a gear, and the gear is driven to rotate to drive the sliding block to move.
As an implementable mode, the catheter tube body comprises an inner layer, an intermediate layer and an outer layer which are arranged in an attaching mode, and the bending control wire comprises any one of the following materials at the arrangement position of the catheter tube body: the bending control wire is embedded in the middle layer; the bend-controlling wire is arranged between the inner layer and the middle layer; the bend-controlling wire is arranged between the middle layer and the outer layer.
As a practical way, the surface structure of the intermediate layer includes any one or a combination of a woven structure, a hypotube structure and a spring structure.
The beneficial effects of the embodiment of the application include:
the application provides an intervene pipe, including the pipe body and the pipe seat of being connected with pipe body one end, the pipe body is kept away from the one end of pipe seat and is the distal end, is provided with the curved silk of accuse along the extending direction of pipe body on the lateral wall of pipe body, and the lateral wall fixed connection of the one end of the curved silk of accuse and distal end, is provided with the transmission assembly who is connected with the curved silk other end of accuse in the pipe seat, and transmission assembly receives the pulling curved silk of accuse so that the distal end is crooked. When intervene the pipe and need be crooked, the other end of drive source drive transmission subassembly motion and pulling accuse curved silk, make the other end motion of accuse curved silk and drive the lateral wall motion of the junction of accuse curved silk and distal end, the lateral wall of junction drives the motion of the rest of distal end lateral wall, thereby make the distal end of pipe body crooked, adopt drive source drive transmission subassembly, the crooked of the distal end of realization pipe body that can be high-efficient accurate, alleviate art person's manipulation strength, and controllable effective distance can be pulled with the tie point of distal end to accuse curved silk, when the pulling distance is less, the bending angle of distal end is less, when the pulling distance is great, the bending angle of distal end is great, thereby realize the multi-angle bending of pipe body. The intervention catheter of the embodiment of the application can conveniently realize multi-angle bending and can reduce the operation intensity of an operator.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of an interventional catheter provided in an embodiment of the present application;
fig. 2 is a schematic structural view of a catheter body according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram illustrating a quick-insertion structure according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a transmission assembly according to an embodiment of the present disclosure;
fig. 5 is a second schematic structural diagram of a transmission assembly according to an embodiment of the present application;
fig. 6 is a third schematic structural diagram of a transmission assembly according to an embodiment of the present application;
FIG. 7 is a fourth schematic structural view of a transmission assembly according to an embodiment of the present disclosure;
FIG. 8 is a fifth schematic view of a transmission assembly according to an embodiment of the present disclosure;
FIG. 9 is a sixth schematic view of a transmission assembly according to an embodiment of the present disclosure;
FIG. 10 isbase:Sub>A cross-sectional view taken along A-A of FIG. 2;
fig. 11 is a schematic diagram illustrating a mating structure of another fast-plug structure according to an embodiment of the present disclosure.
Icon: 100-an interventional catheter; 110-a catheter tube; 111-an inner layer; 112-an intermediate layer; 113-an outer layer; 120-bending control wire; 130-a catheter hub; 131-a quick-plug structure; 132-a quick-connect interface; 133-a connection port; 140-a transmission assembly; 151-screw; 152-nut block; 161-a rotating shaft; 162-a wire spool; 171-a slide; 172-chute; 173-connecting rod; 174-gear.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the present application, it should be noted that the terms "center", "vertical", "horizontal", "inside", "outside", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally placed when products of the application are used, and are only used for convenience of description and simplification of the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Interventional therapy has the advantages of small wound, quick response, quick recovery and the like, and an interventional catheter as an important consumable of interventional therapy stretches into a focus along a micro channel or an original pipeline of a human body, so that the end of the interventional catheter can directly reach the focus, but the interventional catheter in the prior art cannot accurately control the bending direction of a far end and cannot realize non-artificial controllable bending, and therefore the open end of the interventional catheter cannot be accurately controlled to reach and continuously aim at the focus in the whole operation process.
The present application provides an interventional catheter 100, as shown in fig. 1, fig. 2 and fig. 5, including a catheter tube 110 and a catheter hub 130 connected to one end of the catheter tube 110, where one end of the catheter tube 110 away from the catheter hub 130 is a distal end, a bending control wire 120 is disposed on a sidewall of the catheter tube 110 along an extending direction of the catheter tube 110, and one end of the bending control wire 120 is fixedly connected to the sidewall of the distal end, a transmission component 140 connected to the other end of the bending control wire 120 is disposed in the catheter hub 130, and the transmission component 140 is driven to pull the bending control wire 120 so as to bend the distal end.
The interventional catheter 100 provided by the embodiment of the application is matched with a robot for interventional therapy, the robot is used as a driving source, when interventional therapy is performed, the catheter tube 110 of the interventional catheter 100 extends into the lesion along a micro channel or an original natural pipeline of a human body, so that the far end of the catheter tube 110 directly reaches the lesion, when an opening at the far end of the catheter tube 110 is aligned with the lesion, treatment can be directly performed through the channel in the catheter tube 110, when the opening at the far end of the catheter tube 110 is not aligned with the lesion, the robot starts the driving source to drive the transmission component 140 to move, because the transmission assembly 140 is connected with the other end of the bending control wire 120, the transmission assembly 140 drives the other end of the bending control wire 120 to move when moving, when the other end of the bending control wire 120 moves towards the direction far away from the catheter tube body 110, the side wall of the far end connected with one end of the bending control wire 120 is driven to move towards the direction of the catheter tube seat 130, because the connection of the bending control wire 120 and the far end is point connection, when the side wall of the far end connected with the bending control wire 120 moves towards the direction far away from the catheter tube body 110, the side walls of the far ends of the rest parts move to different degrees along with the movement of the side wall of the connection point, and therefore the far end is bent.
From the above, the robot can realize the bending of the end of the catheter tube 110 through the transmission assembly 140, which reduces the labor intensity of the operator, and secondly, because the connection point of the bending control wire 120 and the distal end of the catheter tube 110 can be pulled for an effective controllable distance, when the pulling distance is small, the bending angle of the distal end is small, and when the pulling distance is large, the bending angle of the distal end is large, thereby realizing the multi-angle bending of the catheter tube 110.
The connection mode of the end of the bending-control wire 120 and the distal side wall of the catheter tube 110 is not limited in this embodiment, and may be winding, back threading, welding, sewing, or the like, as long as the end of the bending-control wire 120 and the distal side wall of the catheter tube 110 can be fixed. In addition, the number of the bending-controlling wires 120 is not limited in the embodiment of the present application, and may be, for example, one, two, three, four, eight, and the like, when the bending-controlling wires 120 include a plurality of wires, the connection points between the plurality of bending-controlling wires 120 and the distal end include a plurality of wires, and the plurality of connection points can accurately realize the bending direction of the distal end.
In addition, the specific material of the bending control wire 120 is not limited in this embodiment, as long as the bending control wire does not break when being subjected to a tensile force, and for example, the bending control wire may be a metal material, and may be a polymer material such as PA, PI, and PTFE, or may be coated on an outer layer of the metal material.
The application provides an interventional catheter 100, including catheter tube 110 and the catheter hub 130 of being connected with catheter tube 110 one end, catheter tube 110 keeps away from the one end of catheter hub 130 and is the distal end, be provided with accuse curved filament 120 along the extending direction of catheter tube 110 on the lateral wall of catheter tube 110, and the one end of controlling curved filament 120 and the lateral wall fixed connection of distal end, it is provided with transmission assembly 140 to correspond accuse curved filament 120 in catheter hub 130, transmission assembly 140 is driven to draw accuse curved filament 120 so that catheter tube 110 keeps away from the distal end of catheter hub 130 and is crooked. When the interventional catheter 100 needs to be bent, the driving source drives the transmission assembly 140 to move and pulls the other end of the bending control wire 120, so that the other end of the bending control wire 120 moves and drives the side wall at the joint of the bending control wire 120 and the distal end of the catheter tube 110 to move, the side wall at the joint drives the rest part of the distal end side wall to move, thereby bending the distal end of the catheter tube 110, the driving source drives the transmission assembly 140, the bending of the distal end of the catheter tube 110 can be efficiently and accurately realized, the operation intensity of an operator is reduced, and the effective controllable distance can be pulled at the joint of the bending control wire 120 and the distal end of the catheter tube 110, when the pulling distance is small, the bending angle of the distal end is small, when the pulling distance is large, the bending angle of the distal end is large, thereby realizing the multi-angle bending of the catheter tube 110. The interventional catheter 100 of the embodiment of the application can conveniently realize multi-angle bending, and can reduce the operation intensity of an operator.
Optionally, as shown in fig. 2, the bending-controlling wire 120 includes a plurality of wires, a plurality of transmission assemblies 140 are correspondingly disposed in the catheter hub 130, and connection points of the plurality of bending-controlling wires 120 and the distal end are uniformly disposed on the sidewall of the distal end.
When accuse curved filament 120 includes a plurality ofly, the tie point equipartition of a plurality of accuse curved filaments 120 and distal end sets up on the lateral wall of distal end, and a plurality of accuse curved filaments 120 correspond a plurality of transmission subassemblies 140, and a plurality of transmission subassemblies 140 provide the pulling force to a plurality of other ends of controlling curved filament 120 respectively, and the distance of pulling back of each point on the lateral wall of accurate realization distal end for the crooked of realization all directions that catheter tube body 110 can be accurate. On the other hand, the plurality of transmission assemblies 140 respectively control the bending control wires 120, the pulling distance at the connection point needing to be bent is longer, the pulling distance at the connection point far away from the bending is shorter, the distance from the connection point needing to be bent is longer, the pulling distance of the transmission assemblies 140 for controlling the bending control wires 120 is smaller, and the smooth bending of the far end of the catheter tube 110 can be realized.
It should be noted that, when the bending control wires 120 include a plurality of wires, the specific number of the bending control wires 120 is not limited in the embodiment of the present application, and may be two, three, four, six or eight, for example, when the bending control wires 120 are four, the four connecting points of the bending control wires 120 and the distal end are uniformly distributed on the sidewall of the distal end, and those skilled in the art should know that the catheter tube body 110 is generally a circular tube, and when the bending control wires 120 include four wires, an included angle between adjacent connecting points of the bending control wires 120 and the distal end is a right angle, which can reduce the number of the bending control wires 120 while ensuring the bending direction.
In an implementation manner of the embodiment of the present application, as shown in fig. 3, a quick-insertion structure 131 is further disposed on a sidewall of the catheter hub 130, and the transmission assembly 140 is connected to the driving source through the quick-insertion structure 131.
The quick-plug structure 131 comprises quick-plug interfaces 132 corresponding to the number of the transmission assemblies 140, the driving end of the robot comprises connecting ports 133 corresponding to the number of the quick-plug interfaces 132, and the connecting ports 133 and the quick-plug interfaces 132 are arranged correspondingly in structure, so that the quick-plug interfaces 132 and the connecting ports 133 can be quickly connected, and the connection efficiency of the driving source and the interventional catheter 100 is improved.
The embodiment of the present application is not limited to the specific structure of the connection port 133 and the fast-plug interface 132, as long as the connection port 133 can drive the fast-plug interface 132 to move, and the skilled person in the art can set the connection port according to actual situations, for example, the connection port 133 can be a plurality of structures such as a buckle, a slot, a hook, a chuck, and the like, and the corresponding fast-plug interface 132 can be a structure of a buckle, a chuck, a hook ring, and a slot corresponding to the connection port 133.
In addition, the arrangement mode of the middle and fast insertion ports 132 of the fast insertion structure 131 is not limited in this application, for example, as shown in fig. 3, when the number of the fast insertion ports 132 is four, the fast insertion ports can be set to be U-shaped structures, the corresponding connection ports 133 can also be set to be U-shaped, at this time, the driving end of the robot can be set to be an open U-shaped, and the robot part in the sterile environment and the interventional catheter 100 in the sterile environment can be conveniently and effectively isolated by a simple bushing mode.
To better achieve effective isolation of the robot part from the sterile environment of the interventional catheter 100, as shown in fig. 11, the quick-connect port 132 may also be disposed on the sidewall of the catheter hub 130, such that the extending direction of the quick-connect port 132 is at a specific angle with the extending direction of the catheter tube 110.
Optionally, the transmission assembly 140 includes a driving member and a driven member connected to the driving member, the other end of the bending control wire 120 is connected to the driven member, and the driving member is driven to move to drive the driven member to pull the bending control wire 120.
Because of the inner space of the robot, the driving source is usually provided as a rotary driving source, and the motion of the bending control wire 120 requires linear motion, the transmission assembly 140 is provided as a driving part and a driven part connected with the driving part, the driving part is driven by the rotary driving source to rotate, and the driven part is driven to move, so that the linear motion of the bending control wire 120 is realized.
In an implementation manner of the embodiment of the present application, as shown in fig. 4 and 5, the driving member includes a screw 151, the driven member includes a nut block 152 in threaded connection with the screw 151, the other end of the bending control wire 120 is connected with the nut block 152, and the screw 151 is driven to rotate so that the nut block 152 moves along the screw 151 and pulls the bending control wire 120.
The screw rod 151 and the nut block 152 in threaded connection with the screw rod 151 form a screw rod structure, the main function of the screw rod structure is to convert rotary motion into linear motion, and the screw rod structure has the characteristics of high precision, reversibility and high efficiency, so that the screw rod 151 and the nut block 152 can realize high-precision pulling and controlling of the bent wire 120, and further high-precision bending of the far end of the interventional catheter 100 is realized.
In an implementation manner of the embodiment of the present application, the transmission assembly 140 further includes a gear set fixedly connected to an end of the screw 151 away from the catheter tube 110, and the gear set is driven to rotate and drives the screw to rotate.
When the transmission assembly 140 includes the screw rod 151 and the nut block 152, in order to improve the stability of the connection between the quick connection port 132 and the screw rod 151, as shown in fig. 5, a gear set may be fixedly disposed at an end of the screw rod 151, the gear set includes a first gear and a second gear that are engaged with each other, the first gear is fixedly disposed at an end of the screw rod 151 away from the catheter tube, the second gear is disposed at an end of the quick connection port 132, and the quick connection port 132 and the screw rod 151 are stably connected by engagement of the first gear and the second gear.
It should be noted that when the transmission assembly 140 includes the screw rod 151 and the nut block 152, the quick-connect interface is disposed on the side of the catheter hub 130 away from the catheter tube 110 due to the movement characteristics of the screw rod 151 and the nut block 152.
Optionally, as shown in fig. 6, the driving member includes a rotating shaft 161, the driven member includes a wire spool 162 fixedly connected to the rotating shaft 161, the other end of the bending control wire 120 is fixedly connected to the wire spool 162, and the rotating shaft 161 is driven to rotate to drive the wire spool 162 to rotate so that the wire spool 162 pulls the bending control wire 120.
The end of the rotating shaft 161 is connected to the fast-inserting port 132, and when the fast-inserting port 132 is driven by the driving source to rotate, the rotating shaft 161 is driven to rotate, and the wire spool 162 rotates along with the rotation of the rotating shaft 161, so that the bending control wire 120 is wound on the wire spool 162 along with the rotation of the wire spool 162, and the pulling of the bending control wire 120 is realized.
In an implementation manner of the embodiment of the present application, as shown in fig. 7, the transmission assembly 140 includes a sliding slot 172 and a sliding block 171 disposed in the sliding slot 172, the sliding slot 172 is fixedly connected to an inner sidewall of the catheter hub 130, the other end of the bending control wire 120 is connected to the sliding block 171, and the sliding block 171 is driven to move in the sliding slot 172 to pull the bending control wire 120.
The sliding groove 172 and the sliding block 171 are used as the transmission assembly 140, and the sliding block 171 can slide rapidly, so that the bending control wire 120 can be pulled rapidly, and the efficiency of the interventional catheter 100 in bending is improved. The quick-insertion interface 132 is connected with the slider 171, and the quick-insertion interface 132 drives the slider 171 to move under the driving of the driving source.
Optionally, as shown in fig. 8, the transmission assembly 140 further includes a connecting rod 173 connected to the sliding block 171, and the other end of the connecting rod 173 is connected to a gear 174, and the gear 174 is driven to rotate to drive the sliding block 171 to move.
In order to realize the connection between the quick-connect interface 132 and the slider 171, the slider 171 may be connected to a connecting rod 173, the other end of the connecting rod 173 is connected to a gear 174, and the rotation of the quick-connect interface 132 drives the gear 174 to rotate, so as to drive the connecting rod 173 to move, so as to realize the movement of the slider 171 and pull the bending control wire 120.
It should be noted that the above-mentioned structures of various transmission assemblies 140 are only examples of the transmission assemblies 140 in the embodiments of the present application, and are not all examples, and as shown in fig. 9, a structure of a transmission assembly 140 using a rotating disc and a threaded block may also be used.
In an implementation manner of the embodiment of the present application, as shown in fig. 10, the catheter tube 110 includes an inner layer 111, an intermediate layer 112 and an outer layer 113, which are disposed in a fitting manner, and the bending control wire 120 includes any one of the following positions at the position of the catheter tube 110: the bend-controlling wires 120 are embedded in the middle layer 112; bend-controlling wire 120 is disposed between inner layer 111 and intermediate layer 112; bend-controlling wires 120 are disposed between intermediate layer 112 and outer layer 113.
The bend-controlling wires 120 are disposed within the intermediate layer 112, or the bend-controlling wires 120 are disposed between the inner layer 111 and the intermediate layer 112, or the bend-controlling wires 120 are disposed between the intermediate layer 112 and the outer layer 113. Make the curved silk 120 of accuse be located the inside of catheter body 110, can protect the curved silk 120 of accuse in transportation and storage process, avoid the curved silk 120 of accuse to receive external damage, in addition, can also avoid setting up and influence intervention treatment in the cavity of catheter body 110, perhaps set up and influence catheter body 110 outside catheter body 110 and stretch into little passageway.
The embodiment of the present invention is not limited to a specific material of the catheter tube 110, and specifically, the inner layer 111 may be made of a single or composite polymer material such as PA, PI, and PTFE. The middle layer 112 may be made of metal wire such as nickel titanium, stainless steel, tungsten wire, etc. or polymer material such as PA, PET, aramid, kevlar. The outer layer 113 may be made of polymer materials such as PA, PEBAX, TPU, PI, etc. alone or in combination, or may be made of the above materials combined from the distal end to the proximal end of the outer layer 113.
Optionally, the surface structure of the middle layer 112 includes any one or a combination of a woven structure, a hypotube structure, and a spring structure.
When the surface structure of the middle layer 112 includes a woven structure, a hypotube structure, and a spring structure, the middle layer 112 has a certain porosity, which provides a certain installation space for the bending control wires 120.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (11)
1. An interventional catheter is characterized by comprising a catheter tube body and a catheter seat connected with one end of the catheter tube body, wherein one end, far away from the catheter seat, of the catheter tube body is a far end, a bending control wire is arranged on the side wall of the catheter tube body along the extending direction of the catheter tube body, one end of the bending control wire is fixedly connected with the side wall of the far end, a transmission assembly connected with the other end of the bending control wire is arranged in the catheter seat, and the transmission assembly is driven to pull the bending control wire so as to bend the far end.
2. The interventional catheter of claim 1, wherein the bending-control wire comprises a plurality of bending-control wires, a plurality of transmission assemblies are correspondingly arranged in the catheter holder, and connection points of the plurality of bending-control wires and the distal end are uniformly distributed on the side wall of the distal end.
3. The interventional catheter of claim 1, wherein a quick-insertion structure is further disposed on a sidewall of the catheter hub, and the transmission assembly is connected to a driving source through the quick-insertion structure.
4. The interventional catheter of claim 1, wherein the transmission assembly comprises a driving member and a driven member connected to the driving member, the other end of the bending control wire is connected to the driven member, and the driving member is driven to move the driven member so that the driven member pulls the bending control wire.
5. The interventional catheter of claim 4, wherein the driving member comprises a threaded rod, the driven member comprises a nut block in threaded connection with the threaded rod, the other end of the bend-controlling wire is connected with the nut block, and the threaded rod is driven to rotate to move the nut block along the threaded rod and pull the bend-controlling wire.
6. The interventional catheter of claim 5, wherein the drive assembly further comprises a gear set fixedly coupled to an end of the threaded rod remote from the catheter tube, the gear set being driven to rotate and drive the threaded rod to rotate.
7. The interventional catheter of claim 4, wherein the driving member comprises a rotating shaft, the driven member comprises a wire spool fixedly connected to the rotating shaft, the other end of the bending control wire is fixedly connected to the wire spool, and the rotating shaft is driven to rotate to drive the wire spool to rotate so that the wire spool pulls the bending control wire.
8. The interventional catheter of claim 1, wherein the transmission assembly comprises a sliding groove and a sliding block disposed in the sliding groove, the sliding groove is fixedly connected to an inner side wall of the catheter hub, the other end of the bending control wire is connected to the sliding block, and the sliding block is driven to move in the sliding groove to pull the bending control wire.
9. The interventional catheter of claim 8, wherein the drive assembly further comprises a link connected to the slider, the link being connected at another end to a gear, the gear being driven to rotate to move the slider.
10. The interventional catheter of claim 1, wherein the catheter tube comprises an inner layer, an intermediate layer and an outer layer which are arranged in an attaching manner, and the bending control wire comprises any one of the following components at the arrangement position of the catheter tube:
the bending control wire is embedded in the middle layer;
the bending control wire is arranged between the inner layer and the middle layer;
the bend-controlling wire is arranged between the middle layer and the outer layer.
11. The interventional catheter of claim 10, wherein the surface structure of the intermediate layer comprises any one or a combination of a braided structure, a hypotube structure, and a spring structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210763819.8A CN115212428A (en) | 2022-06-29 | 2022-06-29 | Interventional catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210763819.8A CN115212428A (en) | 2022-06-29 | 2022-06-29 | Interventional catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115212428A true CN115212428A (en) | 2022-10-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210763819.8A Pending CN115212428A (en) | 2022-06-29 | 2022-06-29 | Interventional catheter |
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| Country | Link |
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| CN (1) | CN115212428A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107206212A (en) * | 2015-01-21 | 2017-09-26 | 美敦力瓦斯科尔勒公司 | Guiding catheter with steering mechanism |
| US20180055589A1 (en) * | 2016-08-26 | 2018-03-01 | Hansen Medical, Inc. | Steerable catheter with shaft load distributions |
| CN110292464A (en) * | 2018-03-22 | 2019-10-01 | 杭州启明医疗器械股份有限公司 | Adjustable bending intervenes valve delivery system |
| CN114146289A (en) * | 2021-12-08 | 2022-03-08 | 航天中心医院 | Adjustable bending guide catheter for artery and vein of whole body target organ |
| WO2022074473A1 (en) * | 2020-10-06 | 2022-04-14 | Baylis Medical Company Inc. | Steerable medical device, handle for a medical device, and method for operating a medical device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107206212A (en) * | 2015-01-21 | 2017-09-26 | 美敦力瓦斯科尔勒公司 | Guiding catheter with steering mechanism |
| US20180055589A1 (en) * | 2016-08-26 | 2018-03-01 | Hansen Medical, Inc. | Steerable catheter with shaft load distributions |
| CN110292464A (en) * | 2018-03-22 | 2019-10-01 | 杭州启明医疗器械股份有限公司 | Adjustable bending intervenes valve delivery system |
| WO2022074473A1 (en) * | 2020-10-06 | 2022-04-14 | Baylis Medical Company Inc. | Steerable medical device, handle for a medical device, and method for operating a medical device |
| CN114146289A (en) * | 2021-12-08 | 2022-03-08 | 航天中心医院 | Adjustable bending guide catheter for artery and vein of whole body target organ |
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Application publication date: 20221021 |