CN115253031A - Single-cavity balloon catheter - Google Patents

Single-cavity balloon catheter Download PDF

Info

Publication number
CN115253031A
CN115253031A CN202210813813.7A CN202210813813A CN115253031A CN 115253031 A CN115253031 A CN 115253031A CN 202210813813 A CN202210813813 A CN 202210813813A CN 115253031 A CN115253031 A CN 115253031A
Authority
CN
China
Prior art keywords
cavity
section
lumen
balloon
tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210813813.7A
Other languages
Chinese (zh)
Inventor
不公告发明人
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Botai Medical Equipment Co ltd
Original Assignee
Qingdao Botai Medical Equipment Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Botai Medical Equipment Co ltd filed Critical Qingdao Botai Medical Equipment Co ltd
Priority to CN202210813813.7A priority Critical patent/CN115253031A/en
Publication of CN115253031A publication Critical patent/CN115253031A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0043—Catheters; Hollow probes characterised by structural features
    • A61M25/005—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0043—Catheters; Hollow probes characterised by structural features
    • A61M2025/0063—Catheters; Hollow probes characterised by structural features having means, e.g. stylets, mandrils, rods or wires to reinforce or adjust temporarily the stiffness, column strength or pushability of catheters which are already inserted into the human body

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Child & Adolescent Psychology (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

The invention relates to a single-cavity balloon catheter, which comprises a single-cavity tube and an inner lining rod, wherein a cavity is formed in the single-cavity tube along the axial direction of the single-cavity tube, a balloon communicated with the cavity is arranged on the single-cavity tube, the inner lining rod can be arranged in the cavity in a moving manner along the axial direction of the single-cavity tube, one end of the single-cavity tube is provided with a first port for controlling the position of the inner lining rod and a second port for injecting liquid into the cavity to expand the balloon, and the other end of the single-cavity tube is provided with a tip part; pushing the lining rod inwards to move the lining rod to a position close to the tip part in the cavity; the inner rod is pulled outwardly to move in the lumen toward the first port to a position away from the tip portion. The balloon catheter has better control performance and passing performance, improves the convenience of balloon delivery and the positioning accuracy, and effectively improves the success rate of clinical operation.

Description

Single-cavity balloon catheter
Technical Field
The invention relates to the technical field of medical instruments, in particular to a single-cavity balloon catheter.
Background
Currently, the introduction of balloon catheters into the rectal, uterine, biliary, urinary, joint, ventricular, and throat cavities of patients for the treatment of various diseases is increasing. When a balloon catheter is clinically used for treating diseases in a cavity, accurate positioning of a target lesion part and accurate expansion are very important, and the most common method is visual positioning and expansion operation treatment under an endoscope. The endoscope is divided into a hard endoscope and a soft endoscope, and when in treatment, an operator firstly conveys the endoscope to the vicinity of a lesion part, then conveys the instruments to the far end of an instrument channel through an instrument operation channel after observing the lesion, and then pushes the instruments out of the instrument channel to continue conveying to the lesion part at the far end. However, endoscopes can provide instrument channels with a smaller outer diameter that can only be used as delivery channels for small diameter instruments such as biopsy forceps, injection needles, etc.
The multi-cavity (or multi-cavity) balloon catheter is matched with a guide wire for use in clinical application and has better tracking performance and control performance, but the multi-cavity (or multi-cavity) balloon catheter cannot be conveyed through an instrument channel of an endoscope due to the fact that the outer diameter of a rod body is large, so that the multi-cavity (or multi-cavity) balloon catheter is conveyed and positioned by a guide wire guiding parallel insertion method, namely the endoscope and the balloon catheter are conveyed simultaneously in a parallel insertion mode under the guiding of the guide wire. Due to the single structural design of the rod body, the single balloon catheter with the lumen has smaller outer diameter of the rod body and can enter an instrument channel of an endoscope, but the single structural design of the rod body causes the poor controllability and the passing performance of the far end, and the using effect is irrational.
Therefore, the inventor provides a single-cavity balloon catheter by virtue of experience and practice of related industries for many years so as to overcome the defects in the prior art.
Disclosure of Invention
The invention aims to provide a single-cavity balloon catheter which can be conveyed to a diseased part of a patient through a mechanical channel of a conventional endoscope, and the controllability and the passing performance of the far end of the balloon catheter can be improved through a coaxial gradually-changed adjustable lining rod arranged in the balloon catheter, so that the single-cavity balloon catheter has excellent clinical application value.
The purpose of the invention can be realized by adopting the following technical scheme:
the invention provides a single-cavity balloon catheter which comprises a single-cavity tube and an inner lining rod, wherein a cavity is formed in the single-cavity tube along the axial direction of the single-cavity tube, the single-cavity tube is provided with a balloon communicated with the cavity, the inner lining rod can be arranged in the cavity in a moving mode along the axial direction of the single-cavity tube, one end of the single-cavity tube is provided with a first port for controlling the position of the inner lining rod and a second port for injecting liquid into the cavity to expand the balloon, and the other end of the single-cavity tube is provided with a tip part;
pushing the inner rod inwardly to move within the lumen to a position proximate to the tip portion;
pulling the inner rod outwardly to move it within the channel in a direction toward the first port to a position away from the tip portion.
In a preferred embodiment of the present invention, the balloon is disposed on the single-lumen tube at a position close to the tip portion, and the inside of the balloon is communicated with the channel, and a liquid is injected into the channel to inflate the balloon.
In a preferred embodiment of the present invention, the single-lumen tube passes through the balloon, and at least one liquid inlet hole communicating the lumen with the inside of the balloon is opened on the single-lumen tube, so that the liquid injected into the lumen enters the inside of the balloon.
In a preferred embodiment of the present invention, the balloon includes an expansion section and first and second ends on both sides of the expansion section in an axial direction of the single lumen tube, the balloon is connected to the single lumen tube through the first and second ends, and when a liquid is injected into the balloon, only the expansion section among the expansion section, the first and second ends is in an expanded state.
In a preferred embodiment of the invention, the surface of the expansion section or a part of the surface of the expansion section is coated with a drug layer.
In a preferred embodiment of the present invention, the single-lumen tube comprises, in order along its axial direction, a first single-lumen tube section, a second single-lumen tube section, and a third single-lumen tube section, the first port and the second port are located at one end of the first single-lumen tube section, the other end of the first single-lumen tube section is connected to one end of the second single-lumen tube section, the other end of the second single-lumen tube section is connected to one end of the third single-lumen tube section, the tip portion is located at the other end of the third single-lumen tube section, and the hardness of the first single-lumen tube section and the hardness of the second single-lumen tube section are greater than the hardness of the third single-lumen tube section;
the sacculus is located on the second single chamber pipeline section and keep away from one side of first single chamber pipeline section.
In a preferred embodiment of the present invention, the axial length of the third single lumen tube section along the single lumen tube is 3mm to 50mm.
In a preferred embodiment of the present invention, the axial length of the third single lumen tube section along the single lumen tube is 15mm to 50mm.
In a preferred embodiment of the present invention, the tip portion has a closed circular arc structure.
In a preferred embodiment of the present invention, the lining rod comprises a first lining rod section far away from the tip end and a second lining rod section close to the tip end, wherein the first lining rod section is a straight rod-shaped structure extending along the axial direction of the single-lumen tube;
the second lining rod section also comprises a reducing section and a straight section, one end of the reducing section is connected with the first lining rod section, the other end of the reducing section is connected with the straight section, and the reducing section is a conical rod-shaped structure with the radius gradually reduced from the direction far away from the tip end to the direction close to the tip end.
In a preferred embodiment of the present invention, the developing wire is disposed on the straight section.
In a preferred embodiment of the present invention, the developing wire is spirally wound and fixed on the straight section.
In a preferred embodiment of the present invention, the single-lumen balloon catheter includes a handle connected to an end of the single-lumen tube remote from the tip portion, the first port and the second port are located on the handle, and the first port, the single-lumen tube and the inner lining rod are coaxially disposed.
In a preferred embodiment of the present invention, a lining rod base capable of sealing and blocking the first port is disposed at the first port, and one end of the lining rod, which is far away from the tip end, is connected to the lining rod base.
From the above, the single-cavity balloon catheter has the characteristics and advantages that: the lining rod capable of moving along the axial direction of the single-cavity tube is arranged in the inner cavity of the single-cavity tube, the position of the lining rod in the cavity can be adjusted in the using process, when the balloon catheter needs to pass through the bent and narrow position of the human body cavity, the lining rod can be pulled outwards so as to move to the tip part far away from the single-cavity tube in the cavity, the bending and deforming capacity of the far end of the single-cavity tube is improved, the success rate of the balloon catheter smoothly passing through the bent and narrow position is improved, and the damage to the human body cavity is reduced; when the balloon catheter accurately positions the lesion part, the lining rod can be pushed inwards to move to a position close to the tip part of the single-cavity tube in the cavity channel, so that the supporting performance of the balloon in an expansion and expansion state is improved, and a good treatment effect is achieved. The single-cavity balloon catheter is provided with only one cavity, the single-cavity balloon catheter can be conveyed to a diseased part of a patient through a mechanical channel of a conventional endoscope, and the arrangement of the movable lining rod improves the controllability and the passing performance of the distal end of the balloon catheter, so that the single-cavity balloon catheter has excellent clinical application value.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention.
Wherein:
FIG. 1: is a structural schematic diagram of the single-cavity balloon catheter.
FIG. 2: is a structural schematic diagram of the lining rod in the single-cavity balloon catheter.
FIG. 3: is a schematic diagram of the arrangement position of the developing wire in the single-cavity balloon catheter.
FIG. 4: is a structural schematic diagram of the developing wire in the single-cavity balloon catheter.
FIG. 5: is one of the structural schematic diagrams of the balloon in the single-cavity balloon catheter.
FIG. 6: is the second schematic structural diagram of the balloon in the single-lumen balloon catheter of the invention.
FIG. 7: is the third structural schematic diagram of the saccule in the single-cavity saccule catheter.
The reference numbers in the present invention are:
1. a balloon; 101. An expansion section;
102. a first end portion; 103. A second end portion;
2. a single lumen tube; 201. A first single lumen tubing section;
202. a second single lumen tubing section; 203. A third single lumen tubing section;
204. a tip portion; 205. A cavity channel;
206. a liquid inlet hole; 3. A lining rod;
301. a first liner rod segment; 302. A second liner rod segment;
3021. a diameter-changing section; 3022. A straight section;
303. developing silk; 304. A lining rod base;
4. a handle; 401. A first port;
402. a second port.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
As shown in fig. 1, the present invention provides a single lumen balloon catheter, which comprises a single lumen tube 2 and an inner lining rod 3, wherein a lumen 205 is formed inside the single lumen tube 2 along an axial direction of the single lumen tube 2, the single lumen tube 2 is provided with a balloon 1 communicated with the lumen 205, the inner lining rod 3 is movably arranged in the lumen 205 along the axial direction of the single lumen tube 2, one end of the single lumen tube 2 is provided with a first port 401 and a second port 402, the position of the inner lining rod 3 in the lumen 205 can be controlled through the first port 401, a liquid can be injected into the lumen 205 through the second port 402 to expand the balloon 1, the surface of the balloon 1 is in contact with a diseased region of a patient to achieve the purpose of treating the diseased region, and the other end of the single lumen tube 2 is provided with a tip 204; pushing the lining rod 3 inward to move the lining rod 3 to a position near the tip portion 204 within the lumen 205; the rod 3 is pulled outwardly to move the rod 3 within the channel 205 in a direction toward the first port 401 to a position away from the tip 204.
The lining rod 3 capable of moving along the axial direction of the single-cavity tube 2 is arranged in the inner cavity 205 of the single-cavity tube 2, the position of the lining rod 3 in the cavity 205 can be adjusted in the using process, when the balloon catheter needs to pass through a bent and narrow human body cavity, the lining rod 3 can be pulled outwards so as to move to the tip part 204 far away from the single-cavity tube 2 in the cavity 205, the bending and deforming capacity of the far end of the single-cavity tube 2 is improved, the success rate of the balloon catheter smoothly passing through the bent and narrow position is improved, and the damage to the human body cavity is reduced; after the balloon catheter accurately positions the lesion part, the lining rod 3 can be pushed inwards to move to the tip part 204 close to the single-lumen tube 2 in the lumen 205, so that the support performance of the balloon 1 in the expansion and expansion state is improved, and a good treatment effect is achieved. The single-cavity balloon catheter is provided with only one cavity 205, and can be conveyed to a diseased part of a patient through a mechanical channel of a conventional endoscope, and the arrangement of the movable lining rod 3 improves the controllability and the passing performance of the distal end of the balloon catheter, so that the single-cavity balloon catheter has excellent clinical application value.
In an alternative embodiment of the present invention, as shown in fig. 1, the balloon 1 is disposed on the single-lumen tube 2 near the tip portion 204, the interior of the balloon 1 is communicated with the lumen 205, and the balloon 1 is inflated and expanded by injecting a liquid into the lumen 205 through the second port 402.
Further, as shown in fig. 1, the single-lumen tube 2 penetrates the balloon 1, at least one liquid inlet hole 206 is formed on the single-lumen tube 2 at a position opposite to the balloon 1, and the channel 205 is communicated with the inside of the balloon 1 through the liquid inlet hole 206, so that the liquid injected into the channel 205 enters the inside of the balloon 1 through the liquid inlet hole 206. Of course, a plurality of liquid inlet holes 206 may be provided according to actual conditions, and the opening positions of the liquid inlet holes 206 are adjusted to ensure that the cavity 205 is communicated with the inside of the balloon 1 and that the liquid can be uniformly and stably filled in the balloon 1, and the specific number and positions of the liquid inlet holes 206 are not limited.
Further, as shown in fig. 1, the balloon 1 includes an expansion section 101 and a first end 102 and a second end 103 located at both sides of the expansion section 101 in the axial direction of the single-lumen tube 2, the balloon 1 is connected to the single-lumen tube 2 through the first end 102 and the second end 103, when liquid is injected into the balloon 1, only the expansion section 101 among the expansion section 101, the first end 102 and the second end 103 is in an expanded state, and the pressure that the expansion section 101 can bear is greater than or equal to 3atm; the first end 102 and the second end 103 do not undergo significant expansive deformation.
In an alternative embodiment of the present invention, the surface of the expansion section 101 or a part of the surface area of the expansion section 101 is coated with a drug layer to provide a targeted drug to the lesion site for treatment.
In an alternative embodiment of the invention, the balloon 1 may be made of a single layer of polymeric material. The single-layer polymer material may be, but is not limited to, one of silica gel, silicone rubber, polyurethane, PVC, polyether polyamide copolymer, nylon or modified nylon, or a combination thereof.
In another alternative embodiment of the invention, the balloon 1 may be made of multiple layers of hard material. Wherein, the hard material can be but not limited to at least two of silica gel, silicon rubber, polyurethane, PVC, polyether polyamide copolymer, nylon and modified nylon, and different hard materials are made to be arranged in a laminated structure.
In an alternative embodiment of the invention, as shown in fig. 5-7, the shape of the balloon 1 (or the balloon 1 in the inflated state) may be, but is not limited to, cylindrical or conical. Of course, the balloon 1 may also have other special-shaped columnar structures (e.g., a dumbbell-shaped structure with large diameters at two ends and a small diameter at a middle portion in fig. 7) in the inflated state, and the specific shape of the balloon 1 is not limited herein.
In an alternative embodiment of the present invention, as shown in fig. 1, the single lumen tube 2 sequentially includes a first single lumen tube section 201, a second single lumen tube section 202 and a third single lumen tube section 203 along an axial direction thereof, the first port 401 and the second port 402 are located at one end (proximal end) of the first single lumen tube section 201, the other end (distal end) of the first single lumen tube section 201 is connected with one end (proximal end) of the second single lumen tube section 202, the other end (distal end) of the second single lumen tube section 202 is connected with one end (proximal end) of the third single lumen tube section 203, the tip 204 is located at the other end (distal end) of the third single lumen tube section 203, and the balloon 1 is located on the second single lumen tube section 202 and on a side away from the first single lumen tube section 201. The hardness of the first single lumen tubing segment 201 and the hardness of the second single lumen tubing segment 202 are greater than the hardness of the third single lumen tubing segment 203, and the third single lumen tubing segment 203 and the tip portion 204 are manipulated and provide substantial mechanical support through mechanical manipulation (including rotation, bending, pulling, etc.) of the first single lumen tubing segment 201 and the second single lumen tubing segment 202 during the surgical procedure. Wherein, the near end is the one end that is close to the operator, the distal end be the one end of keeping away from the operator.
In an alternative embodiment of the present invention, the single lumen tube 2 is made of medical plastic, and the hardness of the single lumen tube 2 is greater than or equal to 70D when made of medical plastic. The medical plastic can be, but is not limited to, one of rigid nylon, nylon/fiber copolymer or blend, polyetheretherketone, polyoxymethylene resin, high density polyethylene or high density polypropylene, or a combination thereof.
In an alternative embodiment of the present invention, the single lumen tube 2 is made of a medical grade metallic material. The medical metal material may be, but is not limited to, stainless steel or an alloy material.
Furthermore, the single-cavity tube 2 can be made of a combination of medical plastic and metal materials, so that the rigidity of the single-cavity tube 2 can be further improved. The medical plastic and the metal material can be connected in a sectional combination mode, or the medical plastic layer is covered on the surface of the metal material layer in a laminating mode.
Further, at least the third single-lumen tube section 203 of the first single-lumen tube section 201, the second single-lumen tube section 202 and the third single-lumen tube section 203 is made of medical plastics, so that the hardness of the third single-lumen tube section 203 is smaller than that of the first single-lumen tube section 201 and the second single-lumen tube section 202, the third single-lumen tube section 203 has better bending performance, can adapt to the complex curved lumen structure of a human body, and ensures that the balloon catheter has better curvature and tracking performance of the lumen.
The medical plastic used for the third single-lumen tube segment 203 may be, but is not limited to, polyether polyamide copolymer, nylon or modified nylon, or a combination thereof.
In an alternative embodiment of the present invention, the third single lumen tube segment 203 has an axial length along the single lumen tube 2 of 3mm to 50mm. Wherein the preferred third single lumen tube segment 203 is 15mm to 50mm along the axial length of the single lumen tube 2. The balloon catheter can adapt to the bending angles of different human body cavities, and can perform rapid deformation feedback on objects protruding on the surfaces of the cavities, thereby improving the success rate of the operation process of passing through a bent narrow cavity at one time and reducing the damage to cavity mucosa caused by repeated passing.
In an optional embodiment of the present invention, the tip portion 204 is a sealed circular arc structure, which can effectively reduce the damage of the balloon catheter to the mucosa of the body lumen during the transportation process in the body lumen.
In an alternative embodiment of the present invention, as shown in fig. 1 to 3, the inner lining rod 3 comprises a first inner lining rod segment 301 far from the tip 204 and a second inner lining rod segment 302 near the tip 204, the first inner lining rod segment 301 is a straight rod-shaped structure extending along the axial direction of the single lumen tube 2; the second liner rod segment 302 further includes a tapered segment 3021 and a straight segment 3022, one end of the tapered segment 3021 is connected to the first liner rod segment 301, the other end of the tapered segment 3021 is connected to the straight segment 3022, and the tapered segment 3021 is a tapered rod-shaped structure with a gradually decreasing radius from a position away from the tip portion 204 to a position close to the tip portion 204. The design of the first lining rod section 301 can greatly improve the mechanical feedback performance and the torque transmission performance of the single-cavity tube 2 close to the tip part 204; the design of the diameter-variable section 3021 and the flat section 3022 can improve the resilience performance of the single-cavity tube 2 near the tip end 204, and the tapered flat straight rod structure can effectively ensure the flexibility and the bending performance of the single-cavity tube 2 near the tip end 204, so that the single-cavity tube 2 near the tip end 204 can be quickly rebounded and reset after encountering a narrow convex obstacle in a human body curved cavity to deform, thereby being quickly adaptive to the shape change and the convex obstacle of the human body cavity, and greatly improving the tracking performance and the passing performance of the single-cavity tube 2 near the tip end 204 in the complex curved human body cavity along the cavity anatomical structure.
Further, the lining rod 3 may be made of an alloy material having excellent resilience performance. Among them, preferred materials are nickel alloys, titanium alloys, or mixed metal materials containing both nickel and titanium.
In an alternative embodiment of the present invention, as shown in fig. 1, 3 and 4, the developing wire 303 is disposed on the straight section 3022, and the developing wire 303 has excellent developing performance under X-ray. During the clinical delivery operation, the mechanical property of the single-lumen tube 2 near the tip 204 can be adjusted by pulling back and pushing forward the inner lining rod 3at the relative position of the single-lumen tube 2 from the tip 204 according to the mechanical feedback of the single-lumen tube 2 near the tip 204, so as to ensure that the single-lumen tube 2 near the tip 204 keeps excellent tracking performance and passing performance. The developing wire 303 plays an important role in the position adjustment process of the lining rod 3, the position of the lining rod 3 can be accurately confirmed through the developing wire 303, and the success rate of clinical operation is improved.
Further, as shown in fig. 4, the developing wire 303 is wound around the straight section 3022 in a single spiral structure or a multiple spiral structure, and the developing wire 303 and the lining rod 3 are fixed together by welding or bonding. The developing wire 303 is of a single spiral structure, so that the flexibility and the bending performance of the developing wire 303 can be improved to the maximum degree, meanwhile, the developing wire 303 is wound and fixed on the straight section 3022 of the lining rod 3, so that the mechanical transition of the diameter-changing section 3021 of the lining rod 3 can be met to the maximum degree, the flexibility and the resilience performance of the straight section 3022 of the lining rod 3 are guaranteed to the maximum degree, and the optimal flexibility and resilience performance of the far section of the single-cavity tube 2 can be obtained according to the pathological changes of human body cavities.
In an alternative embodiment of the present invention, as shown in fig. 1, the single lumen balloon catheter comprises a handle 4, the handle 4 is connected to the end of the single lumen tube 2 remote from the tip portion 204, and the first port 401 and the second port 402 are both located on the handle 4.
Further, as shown in fig. 1, the first port 401, the single lumen tube 2 and the lining rod 3 are coaxially disposed, which not only facilitates the control of the lining rod 3, but also maximizes the mechanical feedback of the single lumen tube 2 to the lining rod 3 from the position close to the tip portion 204 to the position far away from the tip portion 204, and also maximizes the ability of the single lumen tube to transmit torque from the position far away from the tip portion 204 to the position close to the tip portion 204.
Further, as shown in fig. 1, the angle between the central axis of the first port 401 and the central axis of the second port 402 is 10 ° to 90 °, so that the handle 4 is in a "Y" shape.
In an alternative embodiment of the present invention, as shown in fig. 1, the first port 401 is provided with a lining rod base 304 capable of sealing and blocking the first port 401, and the end of the lining rod 3 away from the tip 204 is connected to the lining rod base 304. In the clinical operation process, after the balloon catheter is conveyed to a lesion part, the lining rod 3 is pushed forwards to the tip part 204 of the single-cavity tube 2, meanwhile, the base 304 of the lining rod is rotated to be hermetically fixed with the first port 401 on the handle 4, liquid is injected into the cavity channel 205 through the second port 402 after the sealing and fixing, and the connecting position of the base 304 of the lining rod and the handle 4 can bear the pressure which is greater than or equal to 3atm without leakage in the water injection process. The lining rod 3 is pushed to the position of the single-lumen tube 2 close to the tip part 204, so that the balloon 1 has enough mechanical support in the expansion process, and the displacement generated in the expansion process of the balloon 1 can be effectively prevented.
The single-cavity balloon catheter has the characteristics and advantages that:
1. this single chamber way sacculus pipe, easy operation is convenient, can use with the supporting endoscope apparatus that clinical routine used, can carry to the pathological change position of disease through the apparatus passageway, reduces the direct damage that causes the mucous membrane of human body chamber way through human body chamber way transportation process of sacculus pipe, carries the precision that can improve sacculus pipe transport and location under the endoscope looks straight at simultaneously.
2. In the single-cavity channel balloon catheter, the position of the lining rod 3 in the single-cavity tube 2 can be adjusted through the coaxial gradual change, so that the control performance, the tracking performance and the passing performance of the balloon catheter are improved, the relative position of the lining rod in the remote section area of the single-cavity tube 2 can be flexibly adjusted according to the actual environment of a human cavity channel in the operation process, the mechanical property of the remote section of the single-cavity tube 2 is flexibly adjusted, and the success rate of clinical operation is greatly improved.
3. In the single-cavity balloon catheter, the developing wire 303 is arranged on the lining rod 3, so that the accuracy of the back-pulling and forward-pushing adjusting processes of the lining rod 3 in the conveying process of the balloon 1 is ensured, and the optimal flexibility and resilience of the far section of the single-cavity tube 2 are ensured to the maximum degree.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.

Claims (14)

1. A single-cavity balloon catheter is characterized by comprising a single-cavity tube and an inner lining rod, wherein a cavity is formed in the single-cavity tube along the axial direction of the single-cavity tube, a balloon communicated with the cavity is arranged on the single-cavity tube, the inner lining rod is movably arranged in the cavity along the axial direction of the single-cavity tube, one end of the single-cavity tube is provided with a first port for controlling the position of the inner lining rod and a second port for injecting liquid into the cavity to expand the balloon, and the other end of the single-cavity tube is provided with a tip part;
pushing the lining rod inwards to move the lining rod to a position close to the tip part in the cavity;
pulling the inner rod outwardly to move it within the channel in a direction toward the first port to a position away from the tip portion.
2. The single lumen balloon catheter of claim 1, wherein the balloon is disposed over the single lumen tube proximate the tip portion, an interior of the balloon being in communication with the lumen, and a fluid is injected into the lumen to inflate the balloon.
3. The single-lumen balloon catheter according to claim 2, wherein the single-lumen tube passes through the balloon, and at least one liquid inlet hole communicating the lumen with the inside of the balloon is formed in the single-lumen tube, so that liquid injected into the lumen enters the inside of the balloon.
4. The single-lumen balloon catheter according to claim 2, wherein the balloon includes an inflation section and first and second ends on both sides of the inflation section in an axial direction of the single-lumen tube, the balloon being connected to the single-lumen tube through the first and second ends, and when a liquid is injected into the balloon, only the inflation section among the inflation section, the first and second ends is in an inflated and expanded state.
5. The single lumen balloon catheter of claim 4, wherein the surface of the inflation section or a partial area of the surface of the inflation section is coated with a drug layer.
6. The single lumen balloon catheter according to claim 1, wherein the single lumen tube comprises a first single lumen tube section, a second single lumen tube section and a third single lumen tube section in sequence along an axial direction thereof, wherein the first port and the second port are located at one end of the first single lumen tube section, the other end of the first single lumen tube section is connected with one end of the second single lumen tube section, the other end of the second single lumen tube section is connected with one end of the third single lumen tube section, the tip portion is located at the other end of the third single lumen tube section, and the hardness of the first single lumen tube section and the hardness of the second single lumen tube section are greater than the hardness of the third single lumen tube section;
the balloon is positioned on the second single-lumen tube section and is far away from one side of the first single-lumen tube section.
7. The single lumen balloon catheter of claim 6, wherein the third single lumen segment has an axial length along the single lumen tube of 3mm to 50mm.
8. The single lumen balloon catheter of claim 7, wherein the third single lumen segment has an axial length along the single lumen tube of 15mm to 50mm.
9. The single lumen balloon catheter of claim 1 or 6, wherein the tip portion is in the shape of a sealed circular arc.
10. The single lumen balloon catheter of claim 1, wherein the inner liner shaft comprises a first inner liner shaft segment distal to the tip portion and a second inner liner shaft segment proximal to the tip portion, the first inner liner shaft segment being a straight shaft-like structure extending in an axial direction of the single lumen tube;
the second lining rod section also comprises a reducing section and a straight section, one end of the reducing section is connected with the first lining rod section, the other end of the reducing section is connected with the straight section, and the reducing section is a conical rod-shaped structure with the radius gradually reduced from the direction far away from the tip end to the direction close to the tip end.
11. The single-lumen-tract balloon catheter as claimed in claim 10, wherein the straight section is provided with a visualization wire.
12. The single-lumen balloon catheter of claim 11, wherein the visualization wire is helically wound and secured to the straight section.
13. The single-lumen balloon catheter of claim 1, comprising a handle connected to an end of the single-lumen tube distal to the tip portion, wherein the first port and the second port are located on the handle, and wherein the first port, the single-lumen tube, and the inner lining rod are coaxially disposed.
14. The single lumen balloon catheter of claim 13, wherein the first port is provided with a lining shaft base capable of sealing and sealing the first port, and the end of the lining shaft remote from the tip portion is connected with the lining shaft base.
CN202210813813.7A 2022-07-12 2022-07-12 Single-cavity balloon catheter Pending CN115253031A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210813813.7A CN115253031A (en) 2022-07-12 2022-07-12 Single-cavity balloon catheter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210813813.7A CN115253031A (en) 2022-07-12 2022-07-12 Single-cavity balloon catheter

Publications (1)

Publication Number Publication Date
CN115253031A true CN115253031A (en) 2022-11-01

Family

ID=83764813

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210813813.7A Pending CN115253031A (en) 2022-07-12 2022-07-12 Single-cavity balloon catheter

Country Status (1)

Country Link
CN (1) CN115253031A (en)

Similar Documents

Publication Publication Date Title
US11950807B2 (en) Puncturing device and anchoring device
US7608056B2 (en) Steerable catheter devices and methods of articulating catheter devices
JP2019532767A (en) Device for the introduction and operation of multiple telescopic catheters
US9561346B2 (en) Catheterization apparatus and methods thereof
US5376084A (en) Catheter with internal mandrel and method
JP3329464B2 (en) Balloon catheter with variable stiffness
EP3503956B1 (en) Multilumen catheter
CN106264709B (en) Guide catheter
CN113244503B (en) Drug balloon catheter system
WO2022222903A1 (en) Visual pressure regulating catheter
CN213283248U (en) Adjustable bent sheath pipe
CN109701140B (en) Balloon catheter and puncture system thereof
JPH10328306A (en) Medical tube
JP4101323B2 (en) Medical tube
CN218961553U (en) Adjustable curved sheath pipe assembly
CN218961563U (en) Single-cavity tract balloon catheter
CN115253031A (en) Single-cavity balloon catheter
CN212575443U (en) Drug balloon catheter system
CN216855482U (en) Visual pressure regulating catheter
JP3998291B2 (en) Medical tube
CN221229491U (en) Manual control device for adjusting catheter bending and heart valve conveyor
LU504060B1 (en) Extending guide wire and catheter system
CN220404207U (en) Prostate support conveyor with saccule
CN217119106U (en) Balloon catheter
CN221084399U (en) Microcatheter

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination