阅读说明：本技术 基于胆道镜的方向可调节式导管系统 (Direction adjustable catheter system based on choledochoscope ) 是由 崔云峰 桂勇利 张坤 郑飞波 于 2021-09-09 设计创作，主要内容包括：本申请提供有一种基于胆道镜的方向可调节式导管系统,包括：外管,所述外管包括：第一管段；与所述第一管段连接的第二管段；和,与所述第二管段一体式连接的第三管段；所述第一管段的壁厚大于所述第二管段。鉴于第一管段和第二管段之间的壁厚差异,且第二管段采用诸如硅胶材质的材料,当胆道镜进入其内时,在胆道镜的作用下,第二管段能够相对于第三管段产生一定幅度的弯曲,使得观察视野会随着胆道镜的运动而改变,在清除固体坏死组织时,能够建立良好的手术操作空间,以便于最大限度扩展视野,此外,基于外管的设计,其能够将胆道镜精准地引导至病灶区域,更适于推广使用。(The application provides a direction adjustable pipe system based on choledochoscope includes: an outer tube, the outer tube comprising: a first tube section; a second pipe section connected to the first pipe section; and, a third pipe section integrally connected with the second pipe section; the first tube section has a greater wall thickness than the second tube section. In view of the wall thickness difference between the first pipe section and the second pipe section, and the second pipe section adopts materials such as silica gel material, when the choledochoscope gets into it, under the effect of choledochoscope, the second pipe section can produce certain range's bending for the third pipe section for the observation field of vision can change along with the motion of choledochoscope, when cleaining away solid necrotic tissue, can establish good operation space, so that furthest extension field of vision, in addition, based on the design of outer tube, it can guide the choledochoscope to the focus area accurately, more is suitable for using widely.)

1. A direction adjustable catheter system based on a choledochoscope, comprising:

an outer tube, the outer tube comprising:

a first tube section;

a second pipe section integrally connected with the first pipe section;

and, a third pipe section integrally connected with the second pipe section;

the first tube section has a greater wall thickness than the second tube section.

2. The choledochoscope-based directionally-adjustable catheter system of claim 1, further comprising:

and the inner tube is matched with the outer tube and comprises a main suction tube which can be placed into the outer tube.

3. The choledochoscope-based directionally-adjustable catheter system of claim 2, wherein:

the main suction tube also comprises a limit plug annularly arranged on the main suction tube; the limiting plug can be clamped in a free port on the first pipe section.

4. The choledochoscope-based directionally-adjustable catheter system of any one of claims 1 to 3, wherein:

and the side wall of the second pipe section is provided with a through hole.

5. The choledochoscope-based directionally-adjustable catheter system of any one of claims 1 to 3, wherein:

the aperture of the third pipe section is gradually reduced from one end close to the second pipe section to one end far away from the second pipe section.

6. The choledochoscope-based directionally-adjustable catheter system of any one of claims 1 to 3, wherein:

and the outer pipe is also provided with a water inlet pipeline extending along the side walls of the first pipe section and the second pipe section.

7. The choledochoscope-based directionally-adjustable catheter system of any one of claims 1 to 3, wherein:

and the outer pipe is also provided with an air inlet pipeline extending along the side wall of the first pipe section.

8. The choledochoscope-based directionally-adjustable catheter system of any one of claims 1 to 3, wherein:

the first pipe section is connected with the second pipe section through a telescopic pipe section.

9. The choledochoscope-based directionally-adjustable catheter system of claim 8, wherein:

a first limiting pipe section which is coaxial with the telescopic pipe section is arranged in the telescopic pipe section, and one end, relatively close to the third pipe section, of the first limiting pipe section is fixedly connected with the same side end of the telescopic pipe section; a second limiting pipe section which extends coaxially with the first pipe section and can rotate in the first pipe section is embedded in the first pipe section; the ends, close to each other, of the second limiting pipe section and the first limiting pipe section are clamped with each other, and the axial height of the telescopic pipe section can be limited;

when the second limiting pipe section is rotated to the state that one end of the first limiting pipe section, which is close to the second limiting pipe section, is not clamped, the telescopic pipe section is not limited by the second limiting pipe section and the second pipe section.

Technical Field

The present disclosure specifically discloses a direction adjustable catheter system based on a choledochoscope.

Background

Acute Pancreatitis (AP) is one of the common digestive diseases worldwide, and its incidence rate is on the increasing trend year by year. An average of 275000 patients are hospitalized for pancreatitis, which costs about $ 26 million, as recently statistically discovered by the American Gastrointestinal Association (AGA) in the year. There is no such large-scale statistical data in china, but it is not hard to see from reports of pancreatic inflammatory disease progression in each pancreatic center that pancreatitis has already taken an increasingly important role in digestive system disease, a major problem that endangers the health of the whole population. Severe pancreatitis (SAP) accounts for about 20% of acute pancreatitis, often combines more serious complications, and has a fatality rate as high as about 20-30%. Severe Acute Pancreatitis (SAP) is a common acute abdomen disease in clinic, has acute onset and rapid progression, has complex clinical pathological changes, and can generate SIRS and MODS in early stage. Infectious pancreatic necrosis is a surgical indication of severe acute pancreatitis.

At present, for infectious pancreatic necrosis and complicated intra-abdominal infection, a choledochoscope can be adopted for minimally invasive surgical treatment, necrotic solid necrotic tissues are removed, a drainage system is established, and liquid exudation is removed. However, in the current abdominal cavity operation process, when solid necrotic tissues are removed, a good operation space is not available, and when inflammatory effusion is removed, a catheter cannot be accurately placed in a focus area.

Disclosure of Invention

In view of the above-mentioned drawbacks or deficiencies of the prior art, the present application aims to provide a choledochoscope-based directionally-adjustable catheter system capable of establishing a good surgical operation space for maximizing a visual field when removing solid necrotic tissue, compared to the prior art.

A choledochoscope-based directionally-adjustable catheter system, comprising: an outer tube, the outer tube comprising: a first tube section; a second pipe section integrally connected with the first pipe section; and, a third pipe section integrally connected with the second pipe section; the first tube section has a greater wall thickness than the second tube section.

According to the technical scheme provided by the embodiment of the application, the method further comprises the following steps: and the inner tube is matched with the outer tube and comprises a main suction tube which can be placed into the outer tube.

According to the technical scheme provided by the embodiment of the application, the main suction tube further comprises a limiting plug annularly arranged on the main suction tube; the limiting plug can be clamped in a free port on the first pipe section.

According to the technical scheme provided by the embodiment of the application, the side wall of the second pipe section is provided with a through hole.

According to the technical scheme provided by the embodiment of the application, the aperture of the third pipe section is gradually decreased from the end close to the second pipe section to the end far away from the second pipe section.

According to the technical scheme provided by the embodiment of the application, the outer pipe is further provided with a water inlet pipeline extending along the side walls of the first pipe section and the second pipe section.

According to the technical scheme provided by the embodiment of the application, the outer pipe is further provided with an air inlet pipeline extending along the side wall of the first pipe section.

According to the technical scheme provided by the embodiment of the application, the first pipe section is connected with the second pipe section through the telescopic pipe section.

According to the technical scheme provided by the embodiment of the application, a first limiting pipe section is arranged in the telescopic pipe section and is coaxial with the telescopic pipe section, and one end, relatively close to a third pipe section, of the first limiting pipe section is fixedly connected with the same side end of the telescopic pipe section; a second limiting pipe section which extends coaxially with the first pipe section and can rotate in the first pipe section is embedded in the first pipe section; the ends, close to each other, of the second limiting pipe section and the first limiting pipe section are clamped with each other, and the axial height of the telescopic pipe section can be limited; when the second limiting pipe section is rotated to the state that one end of the first limiting pipe section, which is close to the second limiting pipe section, is not clamped, the telescopic pipe section is not limited by the second limiting pipe section and the second pipe section.

In summary, the present application discloses a direction adjustable catheter system based on a choledochoscope. Through designing an adjustable pipe system among this technical scheme, design independent outer tube structure promptly, include: the first pipe section is a main structure of the catheter system and can guide a choledochoscope into the first pipe section; the wall thickness of the second pipe section is smaller than that of the first pipe section, so that the relative angle between the second pipe section and the first pipe section can be conveniently adjusted, and when the choledochoscope enters the second pipe section, the orientation of the choledochoscope can be correspondingly adjusted; and the third pipe section is used for establishing an operation space. Based on the design, in view of the wall thickness difference between the first pipe section and the second pipe section, and the second pipe section adopts materials such as silica gel material, when the choledochoscope gets into it, under the effect of choledochoscope, the second pipe section can produce certain range of bending for the third pipe section for the observation field of vision can change along with the motion of choledochoscope, when cleaing away solid necrotic tissue, can establish good operation space, so that furthest extension field of vision, in addition, based on the design of outer tube, it can guide the choledochoscope to the focus area accurately, more is suitable for using widely.

Further, still provide in this application one with the outer tube cooperatees the inner tube that uses, this inner tube includes the main pipe of inhaling that can put into the outer tube, and when the choledochoscope in the outer tube was withdrawn from, can put into it with main pipe of inhaling to realize the drainage. Specifically, in order to facilitate the fixation of the main suction tube and the outer tube, the main suction tube further comprises a limiting plug annularly arranged on the main suction tube. Based on the design, the inner tube inserted into the outer tube can be matched with the outer tube to guide and remove inflammatory effusion at a focus area.

Furthermore, in the present application, a water inlet pipeline extending along the side walls of the first pipe section and the second pipe section is further disposed in the outer pipe, and preferably, an air inlet pipeline extending along the side wall of the first pipe section is further disposed on the outer pipe. Based on this design, can wash in order to realize irrigating to the abdominal cavity water injection through the inlet tube, cooperate with interior suction pipe again, can carry out the drainage with irrigating back flushing liquid. Can fill into gas in to the abdominal cavity through the intake pipe, its effect lies in: the air inlet pipe can be used for filling air into a focus drainage area in the abdominal cavity so as to prevent human tissues from being adsorbed on the drainage pipe and further prevent the drainage due to the tissue side injury.

Further, the first pipe section and the second pipe section are connected through the telescopic pipe sections, and the telescopic pipe sections are designed to enable the relative movement range between the second pipe section and the third pipe section to be larger, and the expansion of the length range and the complete peripheral range can be realized.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 illustrates a choledochoscope-based directionally-adjustable catheter system;

FIG. 2 is a schematic view of the inner tube of a choledochoscope-based directionally-adjustable catheter system;

FIG. 3 illustrates a choledochoscope-based directionally-adjustable catheter system;

FIG. 4 illustrates a choledochoscope-based directionally-adjustable catheter system;

FIG. 5 illustrates a choledochoscope-based directionally-adjustable catheter system;

FIG. 6 illustrates a choledochoscope-based directionally-adjustable catheter system;

FIG. 7 illustrates a choledochoscope-based directionally-adjustable catheter system;

fig. 8 is a schematic structural diagram showing the mutual matching of a first limiting pipe section and a second limiting pipe section in a choledochoscope-based direction-adjustable catheter system.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Please refer to fig. 1 for a direction adjustable catheter system based on a choledochoscope.

The choledochoscope-based direction-adjustable catheter system comprises: an outer tube 10, the outer tube 10 comprising: a first pipe section 11; a second pipe segment 12 integrally connected to the first pipe segment 11; and, a third pipe section 13 integrally connected with said second pipe section 12; the first pipe section 11 has a larger wall thickness than the second pipe section 12.

The outer tube 10 is preferably made of silicone. The outer tube 10 includes: a first tube segment, a second tube segment, and a third tube segment.

Wherein:

the first pipe section 11 is of an integral hollow columnar structure, is a main structure of a catheter system, and can guide a choledochoscope into the first pipe section. In a preferred embodiment, the length may be 40-50cm, preferably 44 cm. In a preferred embodiment, the inner diameter is 7-10mm, and preferably may be 8 mm. In a preferred embodiment, the wall thickness is 2-3 mm.

A second tube section 12 having a wall thickness less than the wall thickness of the first tube section for facilitating adjustment of the relative angle therebetween, the orientation of the choledochoscope being correspondingly adjustable by operating the choledochoscope such that the second tube section bends relative to the first tube section as the choledochoscope enters therein; the overall hollow cylindrical structure, in a preferred embodiment, may be 4-9cm, preferably 5cm in length. In a preferred embodiment, the wall thickness is 1 to 1.5mm, and preferably may be 1 mm. Preferably, the outer wall edge of the second tube section 12 is level with the outer wall edge of the first tube section.

And a third tube section 13 for establishing a surgical operation space. In a preferred embodiment, the aperture of the third tube section 13 decreases from the end near the second tube section 12 to the end away from the second tube section 12, which facilitates access to the narrow environment of the abdominal cavity. Preferably, the hollow cone-shaped structure can provide observation and operation space for the surgical operation of the choledochoscope. In a specific application scenario, the choledochoscope enters the first pipe section and the second pipe section, but does not enter the third pipe section. Preferably the outer wall edge thereof adjacent one end of the second tube section is level with the outer wall edge of said first tube section. The opening of which at the end remote from the second tube section has an internal diameter of 3-5mm, preferably 4 mm. In a preferred embodiment, the length may be 1-3cm, preferably 1 cm.

Based on the design, in view of the wall thickness difference between the first pipe section and the second pipe section, and the second pipe section adopts materials such as silica gel material, when the choledochoscope gets into it, under the effect of choledochoscope, the second pipe section can produce certain range of bending for the third pipe section for the observation field of vision can change along with the motion of choledochoscope, when cleaing away solid necrotic tissue, can establish good operation space, so that furthest extension field of vision, in addition, based on the design of outer tube, it can guide the choledochoscope to the focus area accurately, more is suitable for using widely.

Another preferred embodiment, reference is made to the choledochoscope-based directionally-adjustable catheter system shown in fig. 2. Based on the structural design of the outer tube defined in fig. 1, the inner tube 20 of the present embodiment is matched with the outer tube, and the inner tube 20 comprises a main suction tube 21 which can be inserted into the outer tube.

Wherein:

the inner tube comprises a main suction tube which can be placed into the outer tube, and when the choledochoscope in the outer tube is withdrawn, the main suction tube can be placed into the inner tube to realize drainage. Specifically, referring to fig. 2, in order to fix the main suction tube to the external appearance, the main suction tube further includes a limiting stopper annularly disposed on the main suction tube. Namely: the main suction tube 21 further comprises a limit plug 22 annularly arranged on the main suction tube 21; the stop plug 22 can be snapped into a free port on the first pipe section 11.

Another preferred embodiment, reference is made to the choledochoscope-based directionally-adjustable catheter system shown in fig. 3. In this embodiment, the sidewall of the second pipe section 12 is provided with a through hole.

Wherein, the design of through-hole can make the peripheral liquid of outer tube get into the outer tube inside, has enlarged the area that liquid got into the outer tube inside to a certain extent, is convenient for further drainage operation.

Another preferred embodiment, reference is made to the choledochoscope-based directionally-adjustable catheter system shown in fig. 4. In this embodiment, the outer tube 10 is further provided with a water inlet pipeline 60 extending along the side walls of the first tube segment 11 and the second tube segment 12.

Based on this design, can wash in order to realize irrigating to the abdominal cavity water injection through the inlet tube, cooperate with interior suction pipe again, can carry out the drainage with irrigating back flushing liquid.

Another preferred embodiment, reference is made to the choledochoscope-based directionally-adjustable catheter system shown in fig. 4. In this embodiment, the outer tube 10 is further provided with an air inlet pipeline 70 extending along the side wall of the first tube segment 11.

Based on this design, can fill into gas in to the abdominal cavity through the intake pipe, its effect lies in: the air inlet pipe can be used for filling air into a focus drainage area in the abdominal cavity so as to prevent human tissues from being adsorbed on the drainage pipe and further prevent the drainage due to the tissue side injury.

Another preferred embodiment, referring to figures 5 and 6, is a choledochoscope-based directionally-adjustable catheter system. In this embodiment, the first pipe section 11 and the second pipe section 12 are connected by a telescopic pipe section 30.

The telescopic tube section is designed to enable a larger relative range of motion between the second tube section and the third tube section. The extension of the length range and the extension of the complete peripheral range can be realized. In particular, the outer wall of the telescoping tube section is level along the outer walls of the first and second tube sections.

The outer tube is placed in the abdominal cavity, the choledochoscope is placed in the outer tube, and after the choledochoscope enters the third tube section, the subsequent choledochoscope-based operation can be started.

As shown in fig. 5, if the active length of the choledochoscope needs to be further extended, the choledochoscope is moved slightly along the axial direction, and the length of the outer tube can be extended within a certain range due to the design of the telescopic tube sections.

Due to the design of the telescopic tube sections, the choledochoscope can be driven to drive the third tube section or the second tube section, so that the second tube section and the third tube section can generate an angular offset relative to the first tube section, as shown in fig. 6.

Compared with the prior art, the observation visual field can be changed along with the movement of the choledochoscope, and the operator can control the choledochoscope to enter the bile duct conveniently.

In another preferred embodiment, please refer to the choledochoscope-based directionally-adjustable catheter system shown in fig. 7. In this embodiment, a first limiting pipe section 40 is coaxially arranged in the telescopic pipe section 30, and one end of the first limiting pipe section 40, which is relatively close to the third pipe section 13, is fixedly connected with the same side end of the telescopic pipe section 30; a second limiting pipe section 50 which extends coaxially with the first pipe section 11 and can rotate in the first pipe section is embedded in the first pipe section; the ends of the second limiting pipe section 50 and the first limiting pipe section 40 which are close to each other are clamped with each other, so that the axial height of the telescopic pipe section 30 can be limited.

Wherein:

the axial height of the first limiting pipe section is smaller than the fully-unfolded axial height of the telescopic pipe section. One end of the first limiting pipe section 40, which is relatively close to the third pipe section 13, is fixedly connected with the same side end of the telescopic pipe section 30.

A second confinement tube segment embedded within and extending axially along the first tube segment, the second confinement tube segment being rotatable within the first tube segment. Specifically, referring to fig. 7, an external ring 52 is disposed on an end of the second limiting pipe section relatively far away from the second pipe section, and the external ring 52 is disposed on an annular groove. The same side end of the first pipe section is embedded into the annular groove, and the second limiting pipe section can rotate relative to the first pipe section by rotating the external ring.

In the embodiment, when the ends, close to each other, of the first limiting pipe section and the second limiting pipe section are clamped with each other, the axial height of the telescopic pipe section can be limited; when the second limiting pipe section is rotated to the position, one end, close to each other, of the first limiting pipe section and the second limiting pipe section is in a non-clamped state, the telescopic pipe section is not limited by the second limiting pipe section and the second pipe section any more, the observation visual field can be changed along with the movement of the choledochoscope under the driving of the choledochoscope, and an operator can control the choledochoscope to enter the bile duct.

Please refer to the adjustable direction catheter system based on choledochoscope shown in fig. 8. In this embodiment, an arc-shaped limiting plate 41 bent to one side of the axis of the first limiting pipe section 40 is arranged at one end, which is relatively close to the third pipe section 13, of the first limiting pipe section 40; one end of the second limiting pipe section 50, which is relatively close to the first limiting pipe section 40, is provided with a limiting track 51 which is clamped with the arc-shaped limiting 41 plate; when the arc-shaped limit plate 41 is clamped into the limit track 51, the axial height of the telescopic tube section 30 is limited.

Based on the design in fig. 8, when the ends of the first limiting pipe section and the second limiting pipe section, which are close to each other, are clamped with each other, that is: the arc limiting plate 41 and the limiting rail 51 are clamped, and the axial height of the telescopic pipe section can be limited. In this state, because of the axial force applied by the retractable tube section to the first limiting tube section, when the second limiting tube section is not rotated, the arc-shaped limiting plate 41 and the limiting rail 51 are tightly clamped and are not easy to fall off.

Based on the design in fig. 8, when the second limiting pipe section is rotated to the end where the first limiting pipe section and the second limiting pipe section are close to each other, the two limiting pipe sections are not clamped, that is: when the second limiting pipe section is rotated in the first pipe section until the arc-shaped limiting plate 41 and the limiting rail 51 are separated from each other, the telescopic pipe section is not limited by the second limiting pipe section and the second pipe section, the observation visual field can be changed along with the movement of the choledochoscope under the driving of the choledochoscope, and an operator can control the choledochoscope to enter the bile duct.

Specifically, a free end edge of the second limiting pipe section, which is close to the first limiting pipe section, is provided with an end convex edge 53 which is formed by protruding towards one side close to the first limiting pipe section, and the limiting track is arranged on one side, which is relatively close to the arc-shaped limiting plate, of the end convex edge 53. When the second limiting pipe section is not rotated, the limiting track on the end convex edge is clamped with the arc limiting plate, and the axial height of the telescopic pipe is limited; when the second limiting pipe section is rotated, the limiting track on the end convex edge is separated from the arc limiting plate, and the axial height of the telescopic pipe is not limited any more.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.