CN211434647U

CN211434647U - Minimally invasive dilation drainage catheter

Info

Publication number: CN211434647U
Application number: CN201921249411.9U
Authority: CN
Inventors: 孙丽娜; 刘迪冬; 付钰锟; 钟午健
Original assignee: Shenzhen Maipuqi Medical Technology Co ltd
Current assignee: Shenzhen Maipuqi Medical Technology Co ltd
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-09-08
Anticipated expiration: 2029-08-05

Abstract

The utility model discloses a minimally invasive dilation drainage catheter, which comprises a catheter seat part, a main body part and a stress diffusion sleeve connecting the catheter seat part and the main body part, wherein the main body part comprises a pushing section, a dilation section, a marking section, a function placement section and a soft head section from a near end to a far end; the main body part of the drainage catheter of the utility model consists of five sections with different hardness; the flexible compliance of the far end is guaranteed, the good torsion-resistant pushing performance of the near end is guaranteed, the pipe diameter of the expansion section is gradually and uniformly expanded from the near end to the far end, the operable space of the far end is enlarged, the free end of the soft head section adopts a structure form of an inclined opening, the operability of an instrument in the pipe is improved, and the medical cost is reduced.

Description

Minimally invasive dilation drainage catheter

Technical Field

The utility model relates to the technical field of medical equipment, specific theory relates to a wicresoft expands drainage catheter.

Background

The catheter is a specially designed sheath that provides the direction of the channel. It is commonly used to deliver various interventional devices or drugs to a targeted target, provide support and protection for it, and also to remove in vivo rejections (stones or extravasation, etc.). Modern technology is rapidly developed, and drainage catheters with various shapes and functions are developed to meet clinical requirements.

The current drainage catheter on the market has the advantages that the tube diameters of the near end and the far end are the same, the hardness is almost the same, the flexibility of the far end is good, but the pushing performance of the near end is poor, when an instrument reaches a target through the catheter, due to the limitation of the tube diameter, the operation space is limited, the operation difficulty is high, the problem of difficult smooth treatment of a diseased part is solved, and the medical cost is increased; in addition, when the drainage catheter is used for taking out the calculus, only small-particle calculus can be led out due to the limitation of the tube diameter, and the calculus with a small particle size can be continuously taken out only by continuously using ultrasonic lithotripsy, so that the medical time is invisibly increased, and the working efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the technical problem to be solved by the utility model is to provide a minimally invasive dilation drainage catheter.

In order to solve the technical problem, the utility model discloses a following scheme realizes: a minimally invasive dilation drainage catheter comprises a catheter seat part, a main body part and a stress diffusion sleeve connected with the catheter seat part and the main body part, wherein the main body part comprises a pushing section, a dilation section, a marking section, a function placement section and a soft head section from a near end to a far end;

the pushing section is in a round tube shape and comprises an outer hydrophilic coating, an outer cladding, a steel wire weaving layer, an inner cladding and a lubricating layer;

the expansion section is in a circular truncated cone shape, the pipe diameter from the near end to the far end is gradually and uniformly expanded, and the expansion section comprises an outer hydrophilic coating, an inner hydrophilic coating, an outer coating, a spring ring layer, an inner coating and a lubricating layer;

the marking section is in a round tube shape, the diameter of the marking section is the same as the diameter of the large end of the expansion section, and the marking section comprises an outer hydrophilic coating, an inner hydrophilic coating, an outer coating, a developing marking layer, an inner coating and a lubricating layer;

the functional placement section comprises an outer hydrophilic coating, an inner hydrophilic coating, an outer coating, an inner coating, a convex layer and a lubricating layer;

the soft head section is made of hydrophilic soft materials, and the free end of the soft head section is an inclined opening.

Furthermore, the tube seat part comprises a conveying tube, a negative pressure interface and a handheld plate fixedly connected to the outer wall of the conveying tube, and anti-skid stripes are arranged on two surfaces of the handheld plate; a conveying interface is arranged on the conveying pipe; the two negative pressure interfaces are arranged up and down symmetrically and are used for connecting a negative pressure machine.

Furthermore, the protruding layer of the functional placement section is a single circle of semicircular protrusions evenly distributed on the inner wall of the tube, the distance between the protrusions and the far-end opening of the placement section is 2-3mm, and the protrusions are made of soft materials.

Further, the hydrophilic coating is a polyurethane coating, the outer cladding layer is made of a polyethylene material, the steel wire weaving layer is formed by alternately weaving two groups of round steel wires, the inner cladding layer is made of a nylon polytetrafluoroethylene material, the lubricating layer is a medicinal grade PVP coating, the spring ring layer is a good nickel-titanium memory alloy conical spring, and the developing marking layer is marked by a platinum or tungsten material.

Furthermore, the pushing section, the expanding section, the marking section and the function placing section are of an integrally formed structure, and the soft head section is welded at a far end opening of the function placing section through a hot melting splicing technology.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the main body part of the drainage catheter consists of a pushing section, an expanding section, a marking section, a functional placement section and a soft head section with different hardness; the soft compliance of the far end is ensured, and the good torsion-resistant pushing performance of the near end is also ensured.

2. The pipe diameter of the expansion section is gradually and uniformly expanded from the near end to the far end, so that the operable space of the far end is enlarged, and the free end of the soft head section adopts a structure form of an inclined opening, so that the operability of the apparatus in the pipe is improved, and the medical cost is reduced.

3. The intraductal inner wall of section is place to the function is equipped with soft semicircular bulge, and when the great calculus of granule or other particulate matters pass through in the negative pressure machine suction catheter, the effect that calculus or other particulate matters dropped can be prevented to the arch to have the function of deriving big particulate matters.

Drawings

FIG. 1 is a schematic view of the drainage catheter of the present invention;

FIG. 2 is a schematic sectional view of the functional placement section of the drainage catheter of the present invention;

in the drawings: 1. the device comprises a pushing section, a 2 expanding section, a 3 marking section, a 4 function placing section, a 5 soft head section, a 6 conveying pipe, a 7 negative pressure interface, a 8 handheld plate, a 9 stress diffusion sleeve.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the attached drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making the scope of the present invention more clearly defined.

Referring to the attached drawings 1-2, the minimally invasive dilation drainage catheter of the utility model comprises a catheter seat part, a main body part and a stress diffusion sleeve 9 connecting the catheter seat part and the main body part, wherein the main body part comprises a pushing section 1, a dilation section 2, a marking section 3, a function placing section 4 and a soft head section 5 from a near end to a far end;

the pushing section 1 is in a round tube shape and comprises an outer hydrophilic coating, an outer cladding, a steel wire weaving layer, an inner cladding and a lubricating layer;

the expansion section 2 is in a circular truncated cone shape, the pipe diameter from the near end to the far end is gradually and uniformly expanded, and the expansion section comprises an outer hydrophilic coating, an inner hydrophilic coating, an outer coating, a spring ring layer, an inner coating and a lubricating layer;

the marking section 3 is in a round tube shape, the diameter of the marking section is the same as the diameter of the large end of the expansion section 2, and the marking section comprises an outer hydrophilic coating, an outer coating, a developing marking layer, an inner coating and a lubricating layer;

the functional placement section 4 comprises an outer hydrophilic coating, an inner hydrophilic coating, an outer coating, an inner coating, a convex layer and a lubricating layer;

the soft head section 5 is made of hydrophilic soft material, and the free end of the soft head section is an inclined opening.

Specifically, the tube seat part comprises a conveying tube 6, a negative pressure interface 7 and a handheld plate 8 fixedly connected to the outer wall of the conveying tube 6, and anti-skid stripes are arranged on two sides of the handheld plate 8.

Specifically, the stress diffusion sleeve 9 is conical, a large port is sleeved on the conveying pipe 6, and a small port is sleeved on the pushing section 1.

Specifically, a conveying interface is arranged on the conveying pipe 6; the two negative pressure interfaces 7 are arranged up and down symmetrically and are used for connecting a negative pressure machine.

It is specific, the protruding layer of section 4 is place to the function is the semicircular bulge of single loop evenly distributed at the inside pipe wall, the utility model discloses preferred embodiment's arch leaves place the distance of 4 distal ports of section is 2mm, and it is made by soft material.

Specifically, the hydrophilic coating is a polyurethane coating, the outer cladding is made of a polyethylene material, the steel wire weaving layer is formed by alternately weaving two round steel wires in a group, the inner cladding is made of a nylon polytetrafluoroethylene material, the lubricating layer is a medicinal grade PVP coating, the spring ring layer is a good nickel-titanium memory alloy conical spring, and the developing marking layer of the preferred embodiment is marked by a platinum material.

Specifically, section 4 is place to propelling movement section 1, expansion section 2, mark section 3, function is as integrated into one piece structure, soft head section 5 welds through hot melt concatenation technique the distal end mouth of section 4 is placed to the function.

It should be noted that the proximal end of the drainage catheter of the present invention is the end that is close to the medical staff, and the distal end is the end that is far away from the medical staff.

It should be noted that the functional placement section 4 can suck and place particles and can operate instruments (rotate, place instruments, etc.) in the cavity of the functional placement section 4.

It should be noted that, in fig. 2, the hydrophilic coating and the lubricating layer are two thin layers and are not shown.

It should be noted that, using the utility model discloses when drainage catheter derived internal particulate matter, carry the target object with the pipe, pass through soft head section 5 with the apparatus with the particulate matter and leading-in to the pipe, start negative pressure machine, to the particulate matter of small volume directly by the suction, then by the inspiration to the particulate matter of little in the section 4 is place to the function, and the protruding layer in the section 4 is place to the function can effectively prevent the particulate matter landing.

The main body part of the drainage catheter of the utility model consists of a pushing section, an expanding section, a marking section, a function placing section and a soft head section with different hardness; the flexible compliance of the far end is guaranteed, the good torsion-resistant pushing performance of the near end is guaranteed, the pipe diameter of the expansion section is gradually and uniformly expanded from the near end to the far end, the operable space of the far end is enlarged, the free end of the soft head section adopts a structure form of an inclined opening, the operability of an instrument in the pipe is improved, and the medical cost is reduced.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.

Claims

1. The utility model provides a wicresoft expands drainage catheter, includes tube seat portion, main part and connects stress diffusion sleeve pipe (9) of tube seat portion, main part, its characterized in that: the main body part comprises a pushing section (1) from a near end to a far end, an expanding section (2), a marking section (3), a functional placement section (4) and a soft head section (5);

the pushing section (1) is in a round tube shape and comprises an outer hydrophilic coating, an outer cladding, a steel wire weaving layer, an inner cladding and a lubricating layer;

the expansion section (2) is in a circular truncated cone shape, the pipe diameter from the near end to the far end is gradually and uniformly expanded, and the expansion section comprises an outer hydrophilic coating, an inner hydrophilic coating, an outer coating, a spring ring layer, an inner coating and a lubricating layer;

the marking section (3) is in a round tube shape, the diameter of the marking section is the same as that of the large end of the expansion section (2), and the marking section comprises an outer hydrophilic coating, an outer coating, a developing marking layer, an inner coating and a lubricating layer;

the functional placement section (4) comprises an outer hydrophilic coating, an inner hydrophilic coating, an outer coating, an inner coating, a convex layer and a lubricating layer;

the soft head section (5) is made of hydrophilic soft material, and the free end of the soft head section is an inclined opening.

2. The minimally invasive dilation drainage catheter of claim 1, wherein: the pipe seat part comprises a conveying pipe (6), a negative pressure interface (7) and a handheld plate (8) fixedly connected to the outer wall of the conveying pipe (6), and anti-skid stripes are arranged on two sides of the handheld plate (8); the stress diffusion sleeve (9) is conical, a large port is sleeved on the conveying pipe (6), and a small port is sleeved on the pushing section (1).

3. The minimally invasive dilation drainage catheter of claim 2, wherein: a conveying interface is arranged on the conveying pipe (6); the two negative pressure interfaces (7) are arranged in an up-down symmetrical mode and are used for being connected with a negative pressure machine.

4. The minimally invasive dilation drainage catheter of claim 1, wherein: the protruding layer of the function placing section (4) is a single circle of semicircular protrusions evenly distributed on the inner wall of the tube, the distance between the protrusions and the far end opening of the placing section (4) is 2-3mm, and the protrusions are made of soft materials.

5. The minimally invasive dilation drainage catheter of claim 1, wherein: the hydrophilic coating is a polyurethane coating, the outer coating is made of a polyethylene material, the steel wire weaving layer is formed by alternately weaving two round steel wires in a group, the inner coating is made of a nylon polytetrafluoroethylene material, the lubricating layer is a medicinal grade PVP coating, the spring ring layer is a nickel-titanium memory alloy conical spring, and the developing marking layer is marked by a platinum or tungsten material.

6. The minimally invasive dilation drainage catheter of claim 1, wherein: the pushing section (1), the expanding section (2), the marking section (3) and the function placing section (4) are of an integrally formed structure, and the soft head section (5) is welded to the far end opening of the function placing section (4) through a hot melting splicing technology.