CN214286250U

CN214286250U - Intervention catheter with direction-changeable head end

Info

Publication number: CN214286250U
Application number: CN202022862189.9U
Authority: CN
Inventors: 刘超; 朱宏彬
Original assignee: Shanghai Penggguan Biological Mediceine Tec Co ltd
Current assignee: Shanghai Penggguan Biological Mediceine Tec Co ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-09-28
Anticipated expiration: 2030-12-03

Abstract

The utility model discloses an intervention pipe with a head end capable of changing direction in the technical field of medical apparatus. Including multicavity pipe, snake bone pipe, joint, connection seal wire and twister, its characterized in that: the far end of the multi-cavity catheter is connected with the snake bone pipe, the near end of the multi-cavity catheter is connected with the joint, and the joint is provided with a twister; the multi-cavity catheter has 3 or more than 3 cavities, and comprises a main cavity and an auxiliary cavity, wherein the connecting guide wire is arranged in the auxiliary cavity, one end of the connecting guide wire is connected with the twister, the other end of the connecting guide wire is fixed at the far end of the snake bone tube, and the far end turning of the snake bone tube is realized by controlling the twister to pull back the connecting guide wire. The utility model has the advantages of convenient operation, accurate head end angle adjustment, quick and accurate operation, etc.

Description

Intervention catheter with direction-changeable head end

Technical Field

The utility model relates to a head end steerable intervention pipe in the technical field of medical equipment.

Background

With the improvement of human life quality requirements and the improvement of medical treatment level, the traditional open operation is gradually replaced by the minimally invasive operation, and the interventional diagnosis and treatment is widely accepted by medical staff, patients and family members at present due to the characteristics of small wound, no need of operation, quick recovery, good effect and the like. The interventional diagnosis and treatment technology mainly comprises an alimentary tract interventional technology and an intravascular interventional diagnosis and treatment technology. The interventional diagnosis and treatment in the digestive tract mainly comprises the conveying of nutrient substances, the drainage of liquid in the digestive tract, auxiliary drainage and the like, and commonly used catheters comprise transnasal gastrointestinal intubation, nasal biliary drainage tubes, ureteral stents, catheters and the like. The endovascular intervention diagnosis and treatment technology is widely applied to the aspects of clinical angiography, angioplasty, removal of thrombus or foreign matters in blood vessels and the like, compared with the traditional medical technology, the endovascular intervention diagnosis and treatment technology is convenient to operate, and can relieve the pain of patients due to low trauma of interventional therapy, has small treatment risk and relatively low treatment cost, so that the technology is widely popularized and applied in the medical field. The endovascular interventional diagnosis and treatment technology is that an interventional catheter is used to reach far diseased parts in the body, such as coronary artery and other blood vessel parts, through a blood vessel lumen, and then a diagnosis and treatment agent or an implanting instrument is injected to achieve the purposes of diagnosis and minimally invasive treatment of the far parts in the body. The intravascular interventional catheter is one of the main instruments for intravascular interventional techniques, and the types of intravascular interventional catheters include an imaging interventional catheter, a drug delivery interventional catheter, an angioplasty interventional catheter and the like. When the above-mentioned catheter for interventional therapy in the digestive tract or the catheter for interventional diagnosis in the blood vessel is inserted into the lesion site of the human body, it is required to pass through the curved or branched tissues of the human body, such as pylorus, bifurcation in the blood vessel, etc. at the junction of the stomach and the small intestine in the digestive tract. Currently, an auxiliary guide wire is mainly used clinically to guide insertion of an interventional catheter, but when the interventional guide wire itself passes through the above-mentioned curved or branched tissue, it is necessary to examine the operation technique and skill of a doctor. In the prior art, for example, a pigtail catheter, an elbow guide wire and the like can be inserted into a catheter or a guide wire to a certain extent conveniently, but the technique still has great difficulty in passing through bent or forked tissues because the head end of the catheter or the guide wire cannot be accurately oriented.

SUMMERY OF THE UTILITY MODEL

The present invention is to overcome the disadvantages of the prior art, and to provide a head end steerable interventional catheter with an accurately adjustable head end angle.

In order to solve the technical problems, the following technical scheme is adopted:

an interventional catheter with a head end capable of changing directions, which comprises a multi-cavity catheter, a snake bone tube, a joint, a connecting guide wire and a twister, and is characterized in that: the far end of the multi-cavity catheter is connected with the snake bone pipe, the near end of the multi-cavity catheter is connected with the joint, and the joint is provided with a twister; the multi-cavity catheter is provided with 3 or more than 3 cavities and comprises a main cavity and an auxiliary cavity, a connecting guide wire is arranged in the auxiliary cavity, one end of the connecting guide wire is connected with the twister, the other end of the connecting guide wire is fixed at the far end of the snake bone tube, and the far end of the snake bone tube is turned by controlling the twister to pull back the connecting guide wire; the technical scheme is further explained as follows: the multi-cavity catheter is made of one of TPU, PVC or silica gel, and the Shore hardness is less than or equal to 80A; the technical scheme is further explained as follows: the snake bone pipe is integrally carved, injected or assembled in units, is made of one of TPU, PTFE, PEEK or PP high polymer materials, and has Shore hardness of more than 80A; the technical scheme is further explained as follows: one end of the snake bone pipe is connected with the multi-cavity catheter in a welding or bonding mode; the other end of the snake bone tube is designed to be a round head or a rice grain head, so that the injury of a human body inserted by the catheter to a cavity or a vessel wall can be effectively avoided, a tube cavity corresponding to an auxiliary cavity of the multi-cavity catheter is arranged in the snake bone tube, and a connecting guide wire can pass through the tube cavity; the technical scheme is further explained as follows: the connecting guide wire is made of stainless steel or nickel-titanium alloy wires; the technical scheme is further explained as follows: the twister is used for self-belt screwing device, the twister controls the turning angle of the head end of the snake bone tube by pulling the connecting guide wire, and scales corresponding to the turning angle are arranged on the twister to control the accurate adjustment of the head end angle of the snake bone tube; the technical scheme is further explained as follows: the number of the connecting guide wires is 2 or more than 2, so that multidirectional angle adjustment is realized.

The utility model has the advantages that:

the snake bone pipe is connected with the far end of the multi-cavity catheter, the snake bone pipe is connected with the twister at the joint of the catheter through the connecting guide wire (the connecting guide wire penetrates through the multi-cavity catheter), the twister can accurately control the direction change of the snake bone pipe, the turning angle can reach 360 degrees, and the head end of the catheter can be twisted along with the structure of a human body cavity when the catheter is inserted into a human body, so that the inserted catheter can be quickly and accurately inserted into the human body cavity or a blood vessel bifurcation structure.

Drawings

Fig. 1 is a schematic diagram of a structure of an interventional catheter with a steerable head.

In the figure: the multi-cavity catheter comprises a multi-cavity catheter 1, a snake bone tube 2, a twister 3, a joint 4, a connecting guide wire 5 and a snake bone tube head end 6.

Detailed Description

The technical scheme of the utility model is further explained with the attached drawings as follows:

as shown in the figure, the functional diagram is a structural schematic diagram of an interventional catheter with a head end capable of changing directions, and the functional diagram comprises a multi-lumen catheter 1, a snake bone tube 2, a twister 3, a joint 4, a connecting guide wire 5 and a snake bone tube head end 6.

The invention relates to an interventional catheter with a head end capable of changing directions, which is characterized in that a flexible hose capable of changing directions is arranged at the leading-in end of the interventional catheter, the flexible hose adopts a snake bone pipe, the snake bone pipe is welded or bonded at the leading-in end of the interventional catheter, the far end of the snake bone pipe is fixed with a connecting guide wire, the other end of the connecting guide wire is connected with a twister, the connecting guide wire is pulled by controlling a screwing device in the twister, the direction change of the snake bone pipe at the far end of the catheter can be accurately controlled, the connecting guide wire is distributed in a secondary cavity of a multi-cavity catheter, the turning angle can reach 360 degrees by arranging a plurality of connecting guide wires, and the head end angle can be accurately adjusted according to a bent or branched section structure in the process that the catheter is inserted into a cavity or a blood vessel of a human body, so that an operator can insert the catheter quickly and accurately.

The above is the explanation of the working principle of the present invention, and a plurality of variations and improvements can be made on the device without departing from the present principle. It should be noted that all the technical solutions obtained by means of equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. An interventional catheter with a head end capable of changing directions, which comprises a multi-cavity catheter, a snake bone tube, a joint, a connecting guide wire and a twister, and is characterized in that: the far end of the multi-cavity catheter is connected with the snake bone pipe, the near end of the multi-cavity catheter is connected with the joint, and the joint is provided with a twister; the multi-cavity catheter has 3 or more than 3 cavities, and comprises a main cavity and an auxiliary cavity, wherein the connecting guide wire is arranged in the auxiliary cavity, one end of the connecting guide wire is connected with the twister, the other end of the connecting guide wire is fixed at the far end of the snake bone tube, and the far end turning of the snake bone tube is realized by controlling the twister to pull back the connecting guide wire.

2. The head-end steerable interventional catheter of claim 1, wherein: the multi-cavity catheter is made of one of TPU, PVC or silica gel, and the Shore hardness is less than or equal to 80A.

3. The head-end steerable interventional catheter of claim 1, wherein: the snake bone pipe is integrally carved, injected or assembled in units, is made of one of TPU, PTFE, PEEK or PP high polymer materials, and has Shore hardness of more than 80A.

4. The head-end steerable interventional catheter of claim 1, wherein: one end of the snake bone pipe is connected with the multi-cavity catheter in a welding or bonding mode; the other end of the snake bone tube is a round head or a rice grain head, a tube cavity corresponding to the auxiliary cavity of the multi-cavity catheter is arranged in the snake bone tube, and a connecting guide wire can pass through the tube cavity.

5. The head-end steerable interventional catheter of claim 1, wherein: the connecting guide wire is made of stainless steel or nickel-titanium alloy wires.

6. The head-end steerable interventional catheter of claim 1, wherein: the twister is from taking belt screwing device, and the twister is through pulling the connection seal wire, control snakebone pipe head end diversion angle, is equipped with the scale corresponding with diversion angle on the twister.

7. The head-end steerable interventional catheter of claim 1, wherein: the number of the connecting guide wires is 2 or more than 2.