CN215608617U

CN215608617U - Vessel intervention catheter

Info

Publication number: CN215608617U
Application number: CN202121568753.4U
Authority: CN
Inventors: 刘爱华; 张宝瑞; 莫大鹏; 霍晓川; 宋光荣; 缪中荣; 吴中学; 刘浪; 夏赛德
Original assignee: Beijing Neurosurgical Institute
Current assignee: Beijing Neurosurgical Institute
Priority date: 2021-07-12
Filing date: 2021-07-12
Publication date: 2022-01-25
Anticipated expiration: 2031-07-12

Abstract

The utility model relates to the technical field of interventional therapy instruments, in particular to a blood vessel interventional catheter, which comprises a catheter body and a control part, wherein the catheter body is of a hollow tubular structure with openings at two ends, one end of the catheter body is provided with a first rotary joint, the control part comprises a holding shell, one end of the holding shell is provided with a second rotary joint, the second rotary joint is rotatably connected with the first rotary joint, a through hole penetrating through the holding shell is axially arranged in the holding shell, a guide wire can penetrate through the through hole, an installation space is arranged on the outer side of the through hole of the holding shell, and a clamping mechanism used for fixing the guide wire is arranged in the installation space. The vessel intervention catheter is simple to operate, and is convenient for fixing the guide wire, so that the vessel intervention catheter is beneficial to the operation of an intervention operation.

Description

Vessel intervention catheter

Technical Field

The utility model relates to the technical field of interventional therapy instruments, in particular to a vascular interventional catheter.

Background

The vascular intervention technology is an operation technology for diagnosis and treatment through a vascular approach by using puncture needles, guide wires, catheters and other instruments under the guidance of medical imaging equipment. Due to the fact that the shape of a blood vessel in a human body is long, narrow and changeable, the steering of the guide wire of the catheter is greatly influenced. During specific operation, the position of the guide wire in the catheter needs to be moved back and forth so as to adjust the front end of the guide wire to a proper position, and then the direction of the head end is adjusted by rotating the guide wire so as to insert the guide wire into a correct blood vessel. At present, the structure of the catheter adopted in the step is simpler, so that the step is complicated to operate, and the requirement on the operating skill of a doctor is higher.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the present invention aims to provide a vessel interventional catheter, which is simple to operate and facilitates the fixation of a guide wire, so as to facilitate the implementation of interventional operation.

In order to achieve the technical effect, the utility model adopts the following technical scheme:

the utility model provides a pipe is intervene to blood vessel, includes pipe body and control part, the pipe body is both ends open-ended cavity tubular structure, the one end of pipe body is provided with first rotary joint, the control part is including gripping the casing, the one end of gripping the casing is provided with the second rotary joint, the second rotary joint rotates with first rotary joint to be connected, it runs through to be provided with along the axial in the casing to grip the through-hole of casing, the through-hole can supply the seal wire to pass, just grip the casing and be in the outside of through-hole is provided with installation space, be provided with in the installation space and be used for carrying out the chucking mechanism fixed to the seal wire. The vessel intervention catheter is simple to operate, and is convenient for fixing the guide wire, so that the vessel intervention catheter is beneficial to the operation of an intervention operation.

Further, chucking mechanism includes first fixture block and second fixture block, first fixture block and second fixture block set up symmetrically the both sides of through-hole, still be provided with first guiding axle and second guiding axle in the installation space, first guiding axle and second guiding axle homogeneous phase are for the through-hole slope sets up, first fixture block cover is established on the first guiding axle and with first guiding axle sliding connection, the second fixture block cover is established on the second guiding axle and with second guiding axle sliding connection, chucking mechanism still includes and is used for the drive first fixture block and second fixture block follow respectively first guiding axle and second guiding axle carry out gliding adjustment mechanism.

Furthermore, one sides of the first clamping block and the second clamping block, which are close to the through hole, are provided with limiting grooves.

Further, first guiding axle and second guiding axle are close to the one end of through-hole is for compressing tightly the end, adjustment mechanism includes fixed mounting and is in the installation space and set up the annular miniature electro-magnet that compresses tightly end one side, still be provided with first reset spring and second reset spring between miniature electro-magnet and the first fixture block, between miniature electro-magnet and the second fixture block respectively, first reset spring cover is established the outside of first guiding axle, the second reset spring cover is established the outside of second guiding axle.

Furthermore, a power supply is arranged in the holding shell and electrically connected with the micro electromagnet.

Furthermore, the second rotary joint is sleeved in the first rotary joint, a rotating mechanism is arranged at the joint of the first rotary joint and the second rotary joint, and the rotating mechanism is used for finely adjusting the rotating angle of the guide wire.

Furthermore, a mounting hole penetrating through the first rotary joint is formed in the side wall of the first rotary joint, a driving gear is rotatably mounted in the mounting hole, a driven gear is fixedly mounted on the outer side of the second rotary joint, and the driven gear is meshed with the driving gear.

Compared with the prior art, the utility model has the beneficial effects that: the vessel intervention catheter provided by the utility model is provided with the catheter body, the control part is arranged at one end of the catheter body, the through hole is formed in the control part and used for installing the guide wire, and the clamping mechanism is arranged in the control part and used for fixing the guide wire, so that the length of the guide wire extending into the vessel is convenient to control. In addition, the first rotary joint and the second rotary joint are arranged to be used for connecting the control part and the catheter body, and the rotating mechanism is arranged at the joint of the first rotary joint and the second rotary joint and used for controlling the selection angle of the guide wire, so that a doctor can conveniently use one hand to operate, the selection angle of the guide wire in the catheter body is easy to control, and the convenience of operation and the refinement degree of the operation can be effectively improved.

Drawings

Fig. 1 is a schematic overall structure diagram of a vascular interventional catheter according to an embodiment of the present invention;

fig. 2 is a partial enlarged structural view at a position a of a vessel interventional catheter according to an embodiment of the present invention;

fig. 3 is a schematic partial structural view of a first engaging block and a second engaging block of a vessel interventional catheter according to an embodiment of the present invention;

the reference signs are: 10, a catheter body, 11, a guide wire, 12, a first rotary joint, 21, a holding shell, 211, a second rotary joint, 22, a through hole, 23, an installation space, 31, a first fixture block, 311, a first guide shaft, 312, a first return spring, 313, a limiting groove, 32, a second fixture block, 321, a second guide shaft, 322, a second return spring, 33, a micro-electromagnet, 34, a power supply, 35, a control switch, 41, an installation hole, 411, a driving gear, 42 and a driven gear.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1 to 3, the vessel intervention catheter provided in this embodiment includes a catheter body 10 and a control portion, a guide wire 11 is slidably installed in the catheter body 10, and the control portion is disposed on one side of the catheter body 10 and is used for controlling sliding and rotation of the guide wire 11 in the catheter body 10. Specifically, the catheter body 10 is a hollow tubular structure with two open ends, and the guide wire 11 is slidably mounted inside the catheter body 10. The catheter body 10 is provided with a first rotary joint 12 at an end thereof, the control part comprises a holding shell 21, one end of the holding shell 21 is provided with a second rotary joint 211, and the second rotary joint 211 is rotatably connected with the first rotary joint 12. A through hole 22 penetrating through the holding shell 21 is axially formed in the holding shell 21, the guide wire 11 can penetrate through the through hole 22, an installation space 23 is formed in the outer side of the through hole 22 of the holding shell 21, and a clamping mechanism used for fixing the guide wire 11 is arranged in the installation space 23. In specific implementation, the guide wire 11 is fixed by the clamping mechanism, and then the angle of the guide wire 11 is adjusted by adjusting the angles of the first rotating joint 12 and the second rotating joint 211. Making it convenient to traverse curved blood vessels.

In this embodiment, the chucking mechanism includes a first latch 31 and a second latch 32 provided in the mounting space 23, the first latch 31 and the second latch 32 are symmetrically disposed at both sides of the through hole 22, the installation space 23 is further provided therein with a first guide shaft 311 and a second guide shaft 321, the first guide shaft 311 and the second guide shaft 321 are both disposed obliquely with respect to the through-hole 22, and the first guide shaft 311 and the second guide shaft 321 are symmetrically disposed at both sides of the through-hole 22, the first latch 31 is sleeved on the first guide shaft 311 and is slidably connected with the first guide shaft 311, the second latch 32 is sleeved on the second guiding shaft 321 and is connected with the second guiding shaft 321 in a sliding manner, the clamping mechanism further includes an adjusting mechanism for driving the first latch 31 and the second latch 32 to slide along the first guide shaft 311 and the second guide shaft 321, respectively. In a specific implementation, the adjusting mechanism drives the first latch 31 to slide along the first guide shaft 311, and drives the second latch 32 to slide along the second guide shaft 321, so that the first latch 31 and the second latch 32 cooperate to clamp the guide wire 11. Specifically, in order to improve the fixing effect of the first fixture block 31 and the second fixture block 32 on the guide wire 11, the first fixture block 31 and the second fixture block 32 are both provided with a limiting groove 313 on one side close to the through hole 22, and when the fixing is implemented specifically, the side wall of the guide wire 11 can be clamped by the limiting groove 313, so that the contact area between the guide wire 11 and the first fixture block 31 and the second fixture block 32 is increased, the fixing effect is better, and the guide wire 11 is not easily damaged.

In this embodiment, in order to facilitate the adjustment of the positions of the first fixture block 31 and the second fixture block 32, the ends of the first guide shaft 311 and the second guide shaft 321, which are close to the through hole 22, are pressing ends, and when the adjusting mechanism pushes the first fixture block 31 and the second fixture block 32 to the pressing ends, the limiting grooves 313 on the first fixture block 31 and the second fixture block 32 abut against the outer wall of the guide wire 11, so that the guide wire 11 is fixed. Specifically, adjustment mechanism includes fixed mounting and is in 23 and set up the annular miniature electro-magnet 33 that compresses tightly end one side, still be provided with first reset spring 312 and second reset spring 322 between miniature electro-magnet 33 and first fixture block 31, between miniature electro-magnet 33 and the second fixture block 32 respectively, first reset spring 312 cover is established the outside of first guiding axle 311, second reset spring 322 cover is established the outside of second guiding axle 321. Meanwhile, a power supply 34 is further arranged in the holding shell 21, the power supply 34 is electrically connected with the micro electromagnet 33, in addition, a control switch 35 for controlling the power supply 34 to supply power to the micro electromagnet 33 is further arranged on the holding shell 21, in specific implementation, the power supply 34 is controlled by the control switch 35 to supply power to the micro electromagnet 33, when the micro electromagnet 33 is electrified to generate magnetic force, the first return spring 312 and the second return spring 322 are compressed, so that the first fixture block 31 and the second fixture block 32 are close to the pressing end, and the guide wire 11 is pressed to play a fixing role. On the contrary, when the micro-electromagnet 33 is powered off, the first return spring 312 and the second return spring 322 extend, so that the first fixture block 31 and the second fixture block 32 are away from the pressing end, and the first fixture block 31 and the second fixture block 32 are disengaged from the guide wire 11, so as to move the guide wire 11.

In this embodiment, in order to facilitate the control of the rotation angle of the guide wire 11 and improve the refinement of the surgical operation, the second rotating joint 211 is sleeved in the first rotating joint 12, and a rotating mechanism is disposed at the joint between the first rotating joint 12 and the second rotating joint 211 and is used for fine-tuning the rotation angle of the guide wire 11. Specifically, seted up on the lateral wall of first rotary joint 12 and run through the mounting hole 41 of first rotary joint 12, drive gear 411 is installed to the mounting hole 41 internal rotation, the outside fixed mounting of second rotary joint 211 has driven gear 42, driven gear 42's the number of teeth is greater than drive gear 411's the number of teeth, just driven gear 42 with drive gear 411 meshes. In practical implementation, the driving gear 411 can be manually rotated, so that the driving gear 411 drives the driven gear 42 to rotate, so as to control the rotation angle of the guide wire 11.

Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the utility model as defined in the appended claims. The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.

Claims

1. A vascular access catheter, characterized by: including pipe body (10) and control part, pipe body (10) are both ends open-ended cavity tubular structure, the one end of pipe body (10) is provided with first rotary joint (12), the control part is including holding casing (21), the one end of holding casing (21) is provided with second rotary joint (211), second rotary joint (211) rotate with first rotary joint (12) and are connected, it is provided with along the axial in casing (21) to hold through-hole (22) of casing (21), through-hole (22) can supply seal wire (11) to pass, just it is in to hold casing (21) the outside of through-hole (22) is provided with installation space (23), be provided with in installation space (23) and be used for carrying out the chucking mechanism fixed to seal wire (11).

2. The vessel access catheter of claim 1, wherein: the clamping mechanism comprises a first clamping block (31) and a second clamping block (32), the first clamping block (31) and the second clamping block (32) are symmetrically arranged at two sides of the through hole (22), a first guide shaft (311) and a second guide shaft (321) are also arranged in the mounting space (23), the first guide shaft (311) and the second guide shaft (321) are arranged obliquely relative to the through hole (22), the first clamping block (31) is sleeved on the first guide shaft (311) and is connected with the first guide shaft (311) in a sliding way, the second fixture block (32) is sleeved on the second guide shaft (321) and is connected with the second guide shaft (321) in a sliding way, the clamping mechanism further comprises an adjusting mechanism for driving the first clamping block (31) and the second clamping block (32) to slide along the first guide shaft (311) and the second guide shaft (321) respectively.

3. The vessel access catheter of claim 2, wherein: and limiting grooves (313) are formed in one sides, close to the through hole (22), of the first clamping block (31) and the second clamping block (32).

4. The vessel access catheter of claim 2, wherein: first guiding axle (311) and second guiding axle (321) are close to the one end of through-hole (22) is for compressing tightly the end, adjustment mechanism includes fixed mounting and is in installation space (23) and set up at the annular micro-electromagnet (33) that compresses tightly end one side, still be provided with first reset spring (312) and second reset spring (322) respectively between micro-electromagnet (33) and first fixture block (31), between micro-electromagnet (33) and second fixture block (32), first reset spring (312) cover is established the outside of first guiding axle (311), second reset spring (322) cover is established the outside of second guiding axle (321).

5. The vessel access catheter of claim 4, wherein: a power supply (34) is further arranged in the holding shell (21), and the power supply (34) is electrically connected with the micro electromagnet (33).

6. The vessel access catheter of claim 1, wherein: the second rotary joint (211) is sleeved in the first rotary joint (12), a rotary mechanism is arranged at the joint of the first rotary joint (12) and the second rotary joint (211), and the rotary mechanism is used for finely adjusting the rotating angle of the guide wire (11).

7. The vessel access catheter of claim 6, wherein: seted up on the lateral wall of first rotary joint (12) and run through mounting hole (41) of first rotary joint (12), drive gear (411) are installed to mounting hole (41) internal rotation, the outside fixed mounting of second rotary joint (211) has driven gear (42), just driven gear (42) with drive gear (411) meshing.