CN114146289A - Adjustable bending guide catheter for artery and vein of whole body target organ - Google Patents

Abstract

The invention discloses an adjustable bending guide catheter for artery and vein of whole body target organ, which comprises a catheter body and an inner cavity flushing pipe, wherein the inner cavity flushing pipe is fixedly connected and communicated with the catheter body, one end of the catheter body close to the inner cavity flushing pipe is a near end, the other end far away from the inner cavity flushing pipe is a far end, and the near end of the catheter body is provided with an adjustable bending mechanism for adjusting the bending of the far end. When the catheter is used, the distal end of the catheter body is inserted into a preset blood vessel, saline enters the catheter body through the inner cavity flushing pipe after the catheter body is opened in an operation, the inner cavity of the catheter body is flushed, the distal end of the catheter body is adjusted by the bending adjusting mechanism according to the position of the catheter body in the blood vessel after radiography, the distal end of the catheter body is bent according to the position of the blood vessel, the target blood vessel is accurately positioned by the distal end of the catheter body, and therefore a guide wire is matched with the catheter to be selected and pass through the target blood vessel, and the purpose of improving the efficiency of over selection in the operation is achieved.

Description

Adjustable bending guide catheter for artery and vein of whole body target organ

Technical Field

The invention relates to the technical field of medical instruments, in particular to an adjustable bending guide catheter for arteries and veins of a whole body target organ.

Background

The catheter is a medical instrument widely applied to minimally invasive interventional diagnosis and treatment operations, mainly provides a channel for a guide wire, and the distal end of the catheter points to the entrance of a target blood vessel by adjusting the position of the distal end of the catheter so as to pour the guide wire into the target blood vessel.

Depending on the intended use of the catheter, it may be desirable to shape the distal end of the catheter into various curved shapes to conform to the anatomical morphology of a particular lesion, thereby facilitating alignment of the distal end of the catheter with the lesion in the body. Therefore, the distal end of the catheter needs to be manually plasticized by a surgeon before operation, and the direction of the distal end of the catheter cannot be adjusted according to the position of the blood vessel, so that the efficiency of the super selection is low.

In view of the foregoing, there is a need for an adjustable bending guide catheter for arteries and veins of a target organ throughout the body.

Disclosure of Invention

In view of the problem of low efficiency of the existing catheter reselection, the invention innovatively provides an adjustable bending guide catheter for the artery and vein of the whole body target organ, the adjustable bending guide catheter can be bent by adjusting the distal end of the catheter, so that the distal end of the catheter is bent and adjusted according to the position of the blood vessel, and the efficiency of the reselection is improved.

In order to achieve the technical purpose, the invention discloses an adjustable bending guide catheter for arteries and veins of a whole body target organ, which comprises a catheter body and an inner cavity flushing catheter, wherein the inner cavity flushing catheter is fixedly connected and communicated with the catheter body, one end of the catheter body, which is close to the inner cavity flushing catheter, is a near end, one end, which is far away from the inner cavity flushing catheter, is a far end, and the near end of the catheter body is provided with a bending adjusting mechanism for adjusting the bending of the far end.

Through adopting above-mentioned technical scheme, during the use pipe, at first insert predetermined intravascular with the distal end of body, open the back in the operation and pass through the inner chamber with salt solution and wash the pipe entering body, wash the inner chamber of body, according to the position of body in the blood vessel after the radiography, utilize and transfer curved mechanism to adjust the distal end of body, the distal end that makes the body is crooked according to vascular position, the accurate location target blood vessel of distal end that makes the body, thereby make seal wire cooperation pipe select, through the target blood vessel, the purpose that has promoted the efficiency of surpassing in the operation has been reached.

Furthermore, transfer curved mechanism including transfer curved bar and act as go-between, transfer the near-end fixed connection of curved bar and body, the lateral wall of body has seted up two along body length direction and has transferred curved chamber, every transfers curved intracavity all to set up one and acts as go-between, act as go-between and transfer curved chamber sliding connection, the one end and the body distal end fixed connection of acting as go-between, the other end is located transfers curved bar, transfer to be provided with in the curved bar to be used for driving two act as go-between to each other gliding drive arrangement in opposite direction, every act as go-between all with drive arrangement fixed connection.

By adopting the technical scheme, when the bending adjusting mechanism is used, the bending adjusting rod is held by hand, and the bending adjusting rod has a supporting effect on the pipe body because the bending adjusting rod is fixedly connected with the near end of the pipe body; then utilize the drive arrangement drive of transfer curved pole to act as go-between and slide in transferring curved intracavity, make two act as go-between move in the axial of body, then the pulling of rethread act as go-between will exert oneself and displacement transfer the distal end of body to make the distal end of body crooked, drive arrangement sets up in transferring curved pole, only will act as go-between and set up the lateral wall at the body, avoid transferring curved mechanism to the influence of body normal work.

Further, drive arrangement includes drive gear, driven gear and gangbar, be provided with the drive chamber in the accent curved bar, drive gear is connected with first driving piece, driven gear is provided with two, every driven gear all rotates and connects in the drive chamber, drive gear all meshes with every driven gear, it holds the chamber still to have seted up two in the accent curved bar, every holds the chamber and all communicates with the drive chamber, every holds the intracavity and all slides and set up a gangbar, the one end of keeping away from the body distal end of acting as go-between is located and holds the intracavity, act as go-between and gangbar fixed connection, a gangbar corresponds a driven gear, gangbar and driven gear threaded connection, the direction of turning of screw thread is opposite on two gangbars.

By adopting the technical scheme, when the driving device is used, the first driving piece is firstly utilized to drive the driving gear to rotate, and each driven gear is meshed with the driving gear, so that the driving gear drives each driven gear to rotate in the same direction; because the driven gear is in threaded connection with the linkage rods, and the rotating directions of the threads on the two linkage rods are opposite, when the driven gear rotates in the same direction, the two linkage rods are driven to slide in opposite directions, and because the two linkage rods are respectively fixedly connected with the two stay wires, the two stay wires are driven by the two linkage rods to be respectively in a tightened and loosened state, so that the force and the displacement can be transmitted to the far end of the tube body through the pulling of the stay wires, the driving device has a simple structure, the synchronous operation of the two stay wires is realized, and the convenience in operation is improved.

Furthermore, a rotating cylinder is arranged between the driven gear and the driving cavity, the rotating cylinder is sleeved on the outer side of the linkage rod, one end of the rotating cylinder is fixedly connected with the driven gear, and one end of the rotating cylinder is rotatably connected with the wall of the driving cavity.

Through adopting above-mentioned technical scheme, through setting up the rotation section of thick bamboo, will rotate the barrel casing and establish the outside at the gangbar, when driven gear rotates, because the one end and the driven gear fixed connection of rotation section of thick bamboo, the other end rotates with the lateral wall in drive chamber to be connected, consequently, driven gear drives the rotation section of thick bamboo and rotates, utilize the rotation section of thick bamboo to fix a position driven gear in the drive chamber, avoid driven gear to slide at the drive intracavity under the drive of gangbar, lead to driven gear and drive gear separation, it promotes the stability of rotation section of thick bamboo when the drive intracavity rotates to set up the rotation section of thick bamboo.

Furthermore, first driving piece includes first drive shaft and first drive handle, the one end and the first drive handle fixed connection of first drive shaft, and the other end passes the lateral wall and the drive gear fixed connection in drive chamber, and first drive shaft rotates with the accent curved bar and is connected.

Through adopting above-mentioned technical scheme, when using first driving piece to drive gear and rotate, rotate first drive handle and drive first drive shaft and rotate, because first drive shaft and drive gear fixed connection to first drive shaft rotates with adjusting the bent lever and is connected, therefore first drive shaft drives drive gear and rotates in the drive intracavity, first driving piece simple structure, convenient operation promotes the convenience when driving drive gear and rotating.

Furthermore, the first driving handle is provided with anti-skid grains.

Through adopting above-mentioned technical scheme, the roughness of the first drive handle of antiskid line increase, the frictional force between increase hand and the first drive handle reduces and takes place the hand smooth phenomenon when rotating first drive handle.

Further, drive arrangement includes driving gear and rack, is provided with the drive chamber in the accent curved bar, and driving gear and rack all set up in the drive chamber, and driving gear fixedly connected with second driving piece still sets up two chambeies that hold that set up along the length direction of body in the accent curved bar, every hold the chamber all with drive chamber intercommunication, every holds the intracavity and all slides and set up a rack, and the one end of keeping away from the body distal end of acting as go-between is located and holds the intracavity, acts as go-between and rack fixed connection, and the driving gear all meshes with every rack.

Through adopting above-mentioned technical scheme, when using drive arrangement, at first utilize first driving piece to drive the driving gear and rotate, the driving gear rotates and drives two racks and slide in the drive intracavity, the slip opposite direction of two racks, because two racks respectively with two fixed connection of acting as go-between, consequently two racks drive two and act as go-between and be in respectively in the state of tightening and lax, thereby can transmit the distal end of body with power and displacement through the pulling of acting as go-between, drive arrangement simple structure, realize the synchro operation of two act as go-between, convenience when promoting the operation.

Further, the rack and the sliding assembly arranged between the containing cavities comprise a sliding block and a sliding groove, the sliding groove is arranged in the containing cavities along the length direction of the pipe body, the sliding block is fixedly connected with the rack, and the sliding block is connected with the sliding groove in a sliding mode.

Through adopting above-mentioned technical scheme, the rack is when holding the intracavity and slide, because rack and slider fixed connection, slider and spout sliding connection, therefore the rack drives the slider and slides in the spout, utilizes the limiting displacement of spout to the slider, makes the rack hold the intracavity and steadily slide, promotes the stability when the rack slides.

Further, the distal end of the tube body is made of an elastic material.

Through adopting above-mentioned technical scheme, set up the distal end of body into the body that the elastic material made, convenience when promoting the distal end bending of body.

Further, the outer diameter of the pipe body is 6F, 7F or 8F.

By adopting the technical scheme, the 6F guide catheter is suitable for conveying a 4F inner catheter, the inner catheter is used for conveying medicine, and the 4F inner catheter coaxially penetrates into the 6F guide catheter; the guide catheters of 7F and 8F are suitable for conveying the inner catheter of 5F, the inner catheter of 5F coaxially penetrates into the guide catheter of 7F or 8F, so that the guide catheter and the inner catheter in the guide catheter are in a coaxial state, the supporting force of an opening system is increased, and the follow-up performance of the inner catheter for medicament delivery is enhanced.

The invention has the beneficial effects that:

compared with the prior art, the adjustable bending guide catheter for the artery and vein of the whole body target organ, provided by the invention, drives the two pull wires to be in a tightened and loosened state respectively by utilizing the two driving devices, so that the force and displacement can be transmitted to the far end of the catheter body by pulling the pull wires, and the far end of the catheter body is bent; the far end of the tube body is bent according to the position of the blood vessel, so that the far end of the tube body can accurately position the target blood vessel, the guide wire is matched with the catheter to be selected into and pass through the target blood vessel, and the purpose of improving the super-selection efficiency in the operation is achieved.

Drawings

Fig. 1 is a schematic structural diagram of a first driving mechanism according to the present application.

Fig. 2 is a schematic view for showing the structure of the first drive mechanism.

Fig. 3 is a schematic view for illustrating the first driving mechanism driving the distal bending of the tube.

Fig. 4 is a schematic structural diagram of a second driving mechanism according to the present application.

Fig. 5 is a schematic view for illustrating the structure of the second drive mechanism.

Fig. 6 is a schematic view for illustrating the second driving mechanism to drive the distal bending of the tubular body.

In the figure, the position of the upper end of the main shaft,

1. a pipe body; 2. an inner cavity flushing pipe; 3. a bending adjusting mechanism; 31. adjusting a bending rod; 311. a drive chamber; 312. an accommodating chamber; 32. a pull wire; 4. a drive gear; 41. a driven gear; 411. a rotating cylinder; 42. a linkage rod; 5. a driving gear; 51. a rack; 6. a first driving member; 61. a first drive handle; 62. a first drive shaft; 7. a sliding assembly; 71. a chute; 72. a slider; 8. a second driving member; 81. a second drive handle; 82. a second drive shaft; 9. a communication pipe is provided.

Detailed Description

The technical solution of the adjustable bending guide catheter for artery and vein of whole body target organ provided by the present invention is explained and illustrated in detail below with reference to fig. 1-6 in the drawings of the specification, and it is obvious that the described embodiment is only a part of the embodiments of the present invention, but not all embodiments. 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 invention.

Fig. 1 is a schematic structural diagram of a first driving mechanism of the present application, and this embodiment specifically discloses an adjustable bending guiding catheter for arteries and veins of a whole body target organ. The adjustable bending guide catheter comprises a catheter body 1 and an inner cavity flushing pipe 2, the outer diameter of the catheter body 1 can be set to be 6F, 7F, 8F and other types (F is the unit 'French' of the catheter, the unit is description of the circumference of the catheter, the 'French' system is that the outer diameter of the catheter is obtained by dividing the 'French' size of the catheter by the circumference or by 3 on the basis of the circumference, for example, the outer diameter of the 6F catheter is 2mm), the length of the catheter body 1 can be set to be 80CM, 100CM and other lengths, and 80CM and 100CM are commonly used clinically. Clinically, the tube body 1 is coaxial with the corresponding outer sheath inner core, the inner part of the tube body 1 is coaxial with the inner catheter, the guide catheter with the outer diameter of 6F is suitable for the inner catheter with the outer diameter of 4F, the inner diameter of the tube body 1 with the outer diameter of 6F is slightly larger than 4F, so that the inner catheter with the outer diameter of 4F is coaxial with the tube body 1 after penetrating into the tube body 1, and the inner catheter with the outer diameter of 4F plays a role in supporting the tube body 1 with the outer diameter of 6F; the guide catheters with the outer diameters of 7F and 8F are suitable for the inner catheters with the outer diameters of 5F, the inner diameters of the tube bodies 1 with the outer diameters of 7F and 8F are slightly larger than 5F, so that the inner catheter with the inner diameter of 5F is in a coaxial state with the tube body 1 after penetrating into the tube body 1, and the inner catheter with the inner diameter of 5F plays a role in supporting the tube bodies 1 with the outer diameters of 7F and 8F; one end of inner chamber wash pipe 2 is fixed with the lateral wall of body 1, inner chamber wash pipe 2 and body 1 intercommunication, the one end that body 1 is close to inner chamber wash pipe 2 is the near-end, the one end of keeping away from inner chamber wash pipe 2 is the distal end, the near-end of body 1 is provided with the accent curved mechanism 3 that is used for adjusting the crooked distal end of body 1, be provided with communicating pipe 9 with the inside coaxial and intercommunication of body 1 in the accent curved mechanism 3, the internal diameter of communicating pipe 9 equals with the internal diameter of body 1, communicating pipe 9 runs through accent curved mechanism 3. When the adjustable-bending guide catheter is used, the guide catheter of 6F is preferably suitable for an inner catheter of 4F, the inner catheter is used for conveying the medicine, and the inner catheter of 4F coaxially penetrates into the tube body 1 of 6F after passing through the communicating tube 9; 7F and 8F's body 1 is applicable to 5F's inner catheter, 5F's inner catheter is behind communicating pipe 9, coaxially penetrate in 7F or 8F body 1, make body 1 be in coaxial state with the inner catheter in it, thereby increase the holding power of opening the system, the reinforcing is used for the follow-up nature of the inner catheter of drug delivery, the operation guide pipe, utilize the distal end of adjusting curved mechanism 3 and adjusting body 1 to carry out the bending, make the accurate location target blood vessel of distal end of body 1, thereby make seal wire cooperation pipe select, through the target blood vessel, the mesh that has promoted the efficiency of surpassing in the operation has been reached.

As shown in fig. 1 and fig. 2, the bending adjusting mechanism 3 includes a bending adjusting rod 31 and a pulling wire 32, the bending adjusting rod 31 is fixedly connected with the proximal end of the tube body 1, the communicating tube 9 penetrates through the bending adjusting rod 31, the side wall of the tube body 1 is provided with two bending adjusting cavities along the length of the tube body 1, the two bending adjusting cavities are symmetrically arranged on two sides of the axis of the tube body 1, each bending adjusting cavity is provided with a pulling wire 32, the pulling wire 32 is slidably connected with the bending adjusting cavity, the included angle formed by the connecting lines of the two pulling wires 32 and the axis of the tube body 1 is between 90 ° and 270 °, preferably, the two pulling wires 32 are symmetrically arranged on two sides of the axis of the tube body 1 (i.e. the included angle between the connecting lines of the two pulling wires 32 and the axis of the tube body 1 is 180 °, one end of each pulling wire 32 is fixedly connected with the tube body 1, the other end is located in the bending adjusting rod 31, the pulling wire 32 is slidably connected with the bending adjusting rod 31, the bending adjusting rod 31 is provided with a driving device for driving the two pulling wires 32 to slide in opposite directions, each pull wire 32 is fixedly connected to the drive means. When the adjusting mechanism is used, firstly, the driving device is utilized to drive the pull wires 32 to slide in the bending adjusting cavity, so that the driving device drives one pull wire 32 to stretch and tighten, and simultaneously drives the other pull wire 32 to loosen, thereby realizing the synchronous operation of the two pull wires 32, and further transmitting force and displacement to the far end of the tube body 1 through the pulling of the pull wires 32.

As shown in fig. 2 and 3, the driving means includes a driving gear 4, the bending adjusting device comprises driven gears 41 and a linkage rod 42, wherein a driving cavity 311 is formed in a bending adjusting rod 31, the driving gears 4 and the driven gears 41 are both arranged in the driving cavity 311, the driving gears 4 are sleeved on the outer side of a communicating pipe 9, the driving gears 4 are rotatably connected with the communicating pipe 9, the driving gears 4 are fixedly connected with a first driving piece 6 for rotating the driving gears 4, two driven gears 41 are arranged, each driven gear 41 is meshed with the driving gear 4, each driven gear 41 is rotatably connected with the driving cavity 311, two rotating cylinders 411 are arranged between each driven gear 41 and the driving cavity 311, the two rotating cylinders 411 are respectively positioned on two sides of the driven gear 41, the two rotating cylinders 411 are all sleeved on the outer side of the linkage rod 42, one end of each rotating cylinder 411 is fixedly connected with the driven gear 41, and one end of each rotating cylinder 411 is rotatably connected with the wall of the driving cavity 311 through a bearing; still set up two holding chamber 312 that set up along the length direction of body 1 in the accent curved bar 31, every holds chamber 312 and all communicates with drive chamber 311, every holds and all slides in the chamber 312 and sets up a gangbar 42, the one end that the body 1 was kept away from to the stay wire 32 is located and holds the chamber 312, stay wire 32 and gangbar 42 fixed connection, a gangbar 42 corresponds a driven gear 41, the axle center of driven gear 41 is passed to the one end of gangbar 42 to gangbar 42 and driven gear 41 threaded connection, the direction of turning of screw thread is opposite on two gangbar 42.

When the driving device is used, firstly, the first driving part 6 is utilized to drive the driving gear 4 to rotate, the driving gear 4 rotates to drive the driven gear 41 to rotate, the driven gear 41 drives the two rotating cylinders 411 to rotate around the axis of the driving cylinder 311, the driven gear 41 rotates to drive the two linkage rods 42 to slide in the two accommodating cavities 312 in two opposite directions, and meanwhile, one linkage rod 42 drives one pull wire 32 to stretch and tighten, the other linkage rod 42 drives the other pull wire 32 to loosen, so that the synchronous operation of the two pull wires 32 is realized, and force and displacement can be transmitted to the far end of the tube body 1 through the pulling of the pull wires 32.

As shown in fig. 2, the first driving member 6 includes a first driving shaft 62 and a first driving handle 61, the first driving shaft 62 is disposed perpendicular to the driving gear 4, the first driving shaft 62 is sleeved outside the communicating pipe 9, the first driving shaft 62 is rotatably connected to the communicating pipe 9, one end of the first driving shaft 62 passes through the driving gear 4 and then is rotatably connected to the front and rear walls of the driving cavity 311, the other end passes through the end face of the bending adjusting rod 31 and then is fixedly connected to the first driving handle 61, the first driving shaft 62 is fixedly connected to the driving gear 4, the first driving shaft 62 is rotatably connected to the bending adjusting rod 31, and the first driving handle 61 is provided with anti-skid threads. When using first driving piece 6, at first the handheld first drive handle 61 of doctor, according to the crooked direction of distal end needs, rotate first drive handle 61 and drive first drive shaft 62 and rotate, first drive shaft 62 rotates and drives drive gear 4 and rotate to realize that first driving piece 6 drives drive gear 4 pivoted purpose.

The implementation principle of the adjustable bending guide catheter for the artery and vein of the whole body target organ in the embodiment of the invention is as follows: taking the 5F inner catheter matched with the 7F or 8F guiding catheter as an example, when the guiding catheter is used for conducting the over-selection opening, one end of the 5F inner catheter is placed in the tube body 1 of the 7F or 8F guiding catheter after passing through the communicating tube 9, then the guiding catheter enters the blood vessel along the guide wire through the blood vessel sheath, and when the guiding catheter reaches the target blood vessel, the far end of the tube body 1 of the guiding catheter is adjusted. When the far end of the catheter body 1 is adjusted, the first driving handle 61 is rotated to drive the first driving shaft 62 to rotate around the axis of the first driving shaft 62, the first driving shaft 62 drives the driving gear 4 to rotate in the driving cavity 311, the driving gear 4 drives the two driven gears 41 to rotate, the two driven gears 41 drive the rotating cylinder 411 to rotate in the driving cavity 311, the driven gears 41 rotate to drive the two linkage rods 42 to slide in the two accommodating cavities 312 in two opposite directions, one linkage rod 42 drives one pull wire 32 to stretch and tighten, the other linkage rod 42 drives the other pull wire 32 to loosen, synchronous operation of the two pull wires 32 is realized, force and displacement can be transmitted to the far end of the catheter body 1 through the pulling of the pull wires 32, the far end of the bending catheter is bent, the far end of the catheter body 1 is accurately positioned on a target blood vessel, a guide wire enters the target blood vessel and then follows the 5F inner catheter, thereby leading the guide wire to be matched with the guide catheter to be selected and pass through the target blood vessel and achieving the purpose of improving the efficiency of the super selection in the operation.

As shown in fig. 4 and 5, in some embodiments, the driving device may further include a driving gear 5 and a rack 51, a driving cavity 311 is formed in the bending adjusting rod 31, the driving cavity 311 gives way to the communicating pipe 9, the communicating pipe 9 is not located in the driving cavity 311, the axis of the communicating pipe 9 is coaxial with the axis of the bending adjusting rod 31, the driving gear 5 and the rack 51 are both disposed in the driving cavity 311, the driving gear 5 is fixedly connected with a second driving member 8, two accommodating cavities 312 are further formed in the bending adjusting rod 31 and are disposed along the length direction of the pipe body 1, each accommodating cavity 312 is communicated with the driving cavity 311, one rack 51 is slidably disposed in each accommodating cavity 312, the driving gear 5 is engaged with each rack 51, one end of the pulling wire 32, which is far away from the pipe body 1, is located in the accommodating cavity 312, the pulling wire 32 is fixedly connected with the rack 51, a sliding assembly 7 is disposed between the rack 51 and the accommodating cavity 312, the sliding assembly 7 comprises a sliding block 72 and a sliding groove 71, the sliding groove 71 is arranged in the accommodating cavity 312, the sliding groove 71 is arranged along the length direction of the pipe body 1, the sliding block 72 is fixedly connected with the rack 51, the sliding block 72 is positioned in the sliding groove 71, and the sliding block 72 is connected with the sliding groove 71 in a sliding mode.

As shown in fig. 6, the second driving member 8 includes a second driving handle 81 and a second driving shaft 82, one end of the second driving shaft 82 is located in the driving cavity 311 and fixedly connected to the driving gear 5, the other end of the second driving shaft passes through the wall of the driving cavity 311 and is fixedly connected to the second driving handle 81 located outside the bending adjusting rod 31, and the second driving handle 81 is provided with anti-slip threads.

As shown in fig. 6, when the driving device is used, first, the second driving handle 81 is rotated, the second driving handle 81 drives the second driving shaft 82 to rotate around its own axis, the second driving shaft 82 drives the driving gear 5 to rotate around its own axis in the driving cavity 311, the driving gear 5 drives the two racks 51 to slide in the accommodating cavity 312 and in opposite directions, and the racks 51 drive the sliding block 72 to slide in the sliding groove 71; make a rack 51 drive a stay wire 32 tensile tight, another rack 51 drives another stay wire 32 lax, realizes two synchronous operation of stay wire 32 to can transmit power and displacement for the distal end of body 1 through the pulling of stay wire 32, make the distal end of adjusting body 1 crooked, the accurate location target blood vessel of distal end of body 1, thereby make seal wire cooperation pipe select, through the target blood vessel, reached the purpose that promotes the efficiency of surpassing in the operation.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "the present embodiment," "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and simplifications made in the spirit of the present invention are intended to be included in the scope of the present invention.

Claims (10)

1. An adjustable bending guide catheter for artery and vein of whole body target organ is characterized in that: the catheter comprises a catheter body (1) and an inner cavity flushing pipe (2), wherein the inner cavity flushing pipe (2) is fixedly connected and communicated with the catheter body (1), one end, close to the inner cavity flushing pipe (2), of the catheter body (1) is a near end, one end, far away from the inner cavity flushing pipe (2), of the catheter body is a far end, and a bending adjusting mechanism (3) used for adjusting bending of the far end is arranged at the near end of the catheter body (1).

2. The adjustable bending guide catheter for the artery and vein of the whole body target organ according to claim 1, wherein: transfer curved mechanism (3) including transferring knee lever (31) and acting as go-between (32), transfer the near-end fixed connection of knee lever (31) and body (1), the lateral wall of body (1) has been seted up two along body (1) length direction and has been transferred curved chamber, every transfers curved intracavity to all set up one and acts as go-between (32), act as go-between (32) and transfer curved chamber sliding connection, the one end and body (1) distal end fixed connection of acting as go-between (32), the other end is located transfers knee lever (31), it is used for driving two gliding drive arrangement of direction that act as go-between (32) each other to be provided with in knee lever (31), every acts as go-between (32) all with drive arrangement fixed connection.

3. The adjustable bending guide catheter for artery and vein of whole body target organ according to claim 2, characterized in that: the driving device comprises a driving gear (4), driven gears (41) and linkage rods (42), a driving cavity (311) is arranged in the bending adjusting rod (31), the driving gear (4) is connected with a first driving piece (6), two driven gears (41) are arranged, each driven gear (41) is rotatably connected in the driving cavity (311), the driving gear (4) is meshed with each driven gear (41), two containing cavities (312) are further formed in the bending adjusting rod (31), each containing cavity (312) is communicated with the driving cavity (311), one linkage rod (42) is arranged in each containing cavity (312) in a sliding mode, one end, far away from the far end of the pipe body (1), of each pull wire (32) is located in each containing cavity (312), each pull wire (32) is fixedly connected with each linkage rod (42), one linkage rod (42) corresponds to one driven gear (41), and the linkage rods (42) are in threaded connection with the driven gears (41), the screw thread directions of the two linkage rods (42) are opposite.

4. The adjustable bending guide catheter for the artery and vein of the whole body target organ according to claim 3, wherein: a rotating cylinder (411) is arranged between the driven gear (41) and the driving cavity (311), the rotating cylinder (411) is sleeved on the outer side of the linkage rod (42), one end of the rotating cylinder (411) is fixedly connected with the driven gear (41), and one end of the rotating cylinder (411) is rotatably connected with the wall of the driving cavity (311).

5. The adjustable bending guide catheter for the artery and vein of the whole body target organ according to claim 3, wherein: the first driving piece (6) comprises a first driving shaft (62) and a first driving handle (61), one end of the first driving shaft (62) is fixedly connected with the first driving handle (61), the other end of the first driving shaft penetrates through the side wall of the driving cavity (311) to be fixedly connected with the driving gear (4), and the first driving shaft (62) is rotatably connected with the bending adjusting rod (31).

6. The adjustable bending guide catheter for whole body target organ artery and vein according to claim 5, characterized in that: the first driving handle (61) is provided with anti-skid grains.

7. The adjustable bending guide catheter for artery and vein of whole body target organ according to claim 2, characterized in that: drive arrangement includes driving gear (5) and rack (51), be provided with drive chamber (311) in transfer curved bar (31), driving gear (5) and rack (51) all set up in drive chamber (311), driving gear (5) fixedly connected with second driving piece (8), still set up two chamber (312) that hold that set up along the length direction of body (1) in transfer curved bar (31), every holds chamber (312) and all communicates with drive chamber (311), every holds and all slides in chamber (312) and sets up one rack (51), the one end that body (1) distal end was kept away from in acting as go-between (32) is located and holds chamber (312), acting as go-between (32) and rack (51) fixed connection, driving gear (5) and every rack (51) all mesh.

8. The adjustable bending guide catheter for whole body target organ artery and vein according to claim 7, characterized in that: rack (51) and hold and be provided with between chamber (312) sliding component (7), sliding component (7) include slider (72) and spout (71), and spout (71) are seted up in holding chamber (312) along the length direction of body (1), slider (72) and rack (51) fixed connection, slider (72) and spout (71) sliding connection.

9. The adjustable bending guide catheter for the artery and vein of the whole body target organ according to claim 1, wherein: the far end of body (1) is body (1) that the elastic material made.

10. The adjustable bending guide catheter for the artery and vein of the whole body target organ according to claim 1, wherein: the outer diameter of the pipe body (1) is 6F, 7F or 8F.

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