WO2022021485A1 - 一种医用导管 - Google Patents

一种医用导管 Download PDF

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Publication number
WO2022021485A1
WO2022021485A1 PCT/CN2020/109220 CN2020109220W WO2022021485A1 WO 2022021485 A1 WO2022021485 A1 WO 2022021485A1 CN 2020109220 W CN2020109220 W CN 2020109220W WO 2022021485 A1 WO2022021485 A1 WO 2022021485A1
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WO
WIPO (PCT)
Prior art keywords
opening
joint
sealing ring
pipe body
channel
Prior art date
Application number
PCT/CN2020/109220
Other languages
English (en)
French (fr)
Inventor
黄锦平
Original Assignee
黄锦平
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Filing date
Publication date
Application filed by 黄锦平 filed Critical 黄锦平
Publication of WO2022021485A1 publication Critical patent/WO2022021485A1/zh

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    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/307—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the urinary organs, e.g. urethroscopes, cystoscopes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • A61B17/12099—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
    • A61B17/12136—Balloons
    • A61M1/0023—
    • 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
    • A61M25/0017—Catheters; Hollow probes specially adapted for long-term hygiene care, e.g. urethral or indwelling catheters to prevent infections
    • 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
    • A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
    • A61M25/0026—Multi-lumen catheters with stationary elements
    • 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
    • A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0041—Catheters; Hollow probes characterised by the form of the tubing pre-formed, e.g. specially adapted to fit with the anatomy of body channels
    • 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
    • A61M25/10—Balloon catheters
    • A61M25/1011—Multiple 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
    • A61M25/10—Balloon catheters
    • A61M25/1018—Balloon inflating or inflation-control devices
    • A61M25/10181—Means for forcing inflation fluid into the balloon
    • A61M25/10182—Injector syringes
    • 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
    • A61M25/1018—Balloon inflating or inflation-control devices
    • A61M25/10184—Means for controlling or monitoring inflation or deflation
    • A61M25/10185—Valves
    • A61M25/10186—One-way valves
    • 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
    • A61M31/00—Devices for introducing or retaining media, e.g. remedies, in cavities of the body
    • 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
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/10—Tube connectors; Tube couplings
    • A61M39/105—Multi-channel connectors or couplings, e.g. for connecting multi-lumen tubes
    • 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
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/10—Tube connectors; Tube couplings
    • A61M39/14—Tube connectors; Tube couplings for connecting tubes having sealed ends
    • 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
    • A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
    • A61M25/0026—Multi-lumen catheters with stationary elements
    • A61M2025/0037—Multi-lumen catheters with stationary elements characterized by lumina being arranged side-by-side
    • 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
    • A61M25/1011—Multiple balloon catheters
    • A61M2025/1013—Multiple balloon catheters with concentrically mounted balloons, e.g. being independently inflatable

Definitions

  • the invention relates to the field of medical instruments, in particular to a medical catheter.
  • Medical catheters are common insertable medical devices, which can be divided into urinary catheters, hemostatic catheters, hysterography catheters, etc. according to their uses. Other slender instruments.
  • the material of the medical catheter mainly includes latex, natural rubber, polyvinyl chloride, silica gel, etc.
  • the structure of the medical catheter includes a pipe body and a plurality of joints sealed with the pipe body. There are multiple independent channels in the pipe body, and each channel Corresponds to a connector that communicates with it.
  • the main structure of the existing medical catheter is generally composed of a pipe body and a joint. The following takes a pipe body with two independent channels as an example, and the production process is described in detail with reference to Fig.
  • a pipe body with two independent channels is manufactured through an extrusion process.
  • Pipe body 2 cut a certain length of pipe body 2
  • the mold core includes a first mold core 93 and a second mold core 94
  • the mold includes a lower mold 91 and an upper mold 92
  • the first mold core 93 and the second mold core 92 is manufactured through an extrusion process.
  • the upper mold cavity 921 surrounds the mold cavity for forming the joint, and the rubber or other polymer material is injected into the mold cavity through the through hole 96 of the upper mold 92 through high temperature and high pressure, and the rubber or other polymer material fills the mold cavity.
  • the upper mold 92 and the lower mold 91 are separated, the first mold core 93 and the second mold core 94 are disassembled from the lower mold 91, and the first mold core 93 and the second mold core 94 are removed from the pipe body 2. It is disassembled from the middle, that is, a joint sealingly connected with the tube body 2 is formed, so as to make a medical catheter.
  • the purpose of the present invention is to propose a new type of medical catheter in view of the deficiencies of the prior art.
  • the present invention has a simple structure, and can first produce the tube body, the joint assembly and the sealing structure separately during production, and then assemble the three together. Therefore, the production of the medical catheter of the present invention requires less labor, a high degree of automated production, and greatly saves production time, thereby greatly improving production efficiency, effectively reducing production costs, greatly improving qualification rate, and having high market competitiveness.
  • the technical scheme adopted in the present invention is:
  • a medical conduit includes a joint assembly and a pipe body, the joint assembly has at least three joints, the joint assembly includes a first joint, a second joint and a third joint, one end of the pipe body is connected to The third joint is sealed and connected and partially extends into the first joint to be sealed with the first joint, the pipe body is provided with a first channel that communicates with the first joint, and the pipe body is also provided with a second channel, A first communication structure is arranged between the second channel and the second joint to communicate the two, and one end of the second channel extending into the joint assembly is provided with a first blocking member for blocking the channel opening, The joint assembly and the pipe body are provided with a sealing structure for sealingly connecting the two and separating a plurality of joint cavities of the joint assembly from each other.
  • the joint assembly, the pipe body and the sealing structure are: Split structure, the joint assembly is an integrally formed integral structure, and the pipe body is an integrally formed integral structure.
  • the interface end of the third joint is provided with a limiting structure for restricting the sealing structure from being separated from the joint assembly.
  • the first communication structure includes a first opening of the tube body that is opened on the outer tube wall of the tube body and communicated with the second channel
  • the sealing structure includes a tube body and the first opening.
  • An upper sealing ring for sealing connection of the joint, the sealing structure further includes a lower sealing ring for sealingly connecting the pipe body and the third joint, the upper sealing ring and the lower sealing ring are spaced apart to form the first opening communicating with the pipe body and the third joint.
  • the communication space of the second joint is described above.
  • the sealing structure includes a number of first outer ribs that are arranged between the upper sealing ring and the first joint and make the two sealingly connected, and the sealing structure also includes a number of The second outer rib is arranged between the lower sealing ring and the third joint and makes the two sealingly connected, the first outer rib and the upper sealing ring are integrally formed integral structure, the second outer rib
  • the sealing ring is an integral structure formed in one piece.
  • the sealing structure includes a sealing ring
  • the first communication structure includes a first opening of the tube body opened on the outer tube wall of the tube body and communicated with the second channel
  • the The first communication structure further includes a first opening of the sealing ring which is opened on the side wall of the sealing ring and communicates with the first opening and the second joint of the pipe body respectively.
  • the sealing structure includes a plurality of first external ribs that are arranged between the sealing ring and the first joint to seal the connection between the two, and the sealing structure also includes a number of A second outer rib between the sealing ring and the third joint and sealingly connecting the two, the first opening of the sealing ring is located between the first outer rib and the second outer rib, the first outer rib
  • the rib or the second outer convex rib and the sealing ring are integrally formed into an integral structure.
  • the first communication structure includes a first inner groove which is arranged on the inner ring surface of the sealing ring and communicates with the first opening of the sealing ring and the first opening of the pipe body respectively.
  • the first communication structure includes a first outer groove which is arranged on the outer ring surface of the sealing ring and communicates with the second joint and the first opening of the sealing ring, respectively.
  • the sealing structure is an adhesive, and the adhesive seals and sticks the outer wall of the tube body and the inner wall of the joint assembly together, and the first communication structure includes an opening.
  • the first opening of the pipe body is on the outer pipe wall of the pipe body and communicated with the second channel and the second joint respectively.
  • a medical catheter as described above between the tube body and the first joint, there are several first external ribs for sealingly connecting the two, and between the tube body and the third joint, there are several The second external convex rib is sealed and connected, and the first opening of the pipe body is located between the first external convex rib and the second external convex rib.
  • the first communication structure includes a first outer groove which is arranged on the outer pipe wall of the pipe body and communicates with the second joint and the first opening of the pipe body respectively.
  • the limiting structure is a limiting portion where the end of the third joint extends toward the center of the port and is narrowed.
  • the port of the second interface is provided with a first one-way valve.
  • one end of the second passage away from the joint assembly is provided with a second blocking member for blocking the passage opening
  • the pipe body is provided at the first opening of the pipe body and the second blocking member.
  • the outer tube wall between the parts is provided with a fifth opening of the tube body that communicates with the second channel, and the outer tube wall of the tube body is sealed and connected with a first balloon communicated with the fifth opening of the tube body.
  • the tube body is also provided with a sixth opening of the tube body communicated with the second channel on the outer tube wall between the first opening of the tube body and the second blocking member, and the tube body is The outer tube wall of the body is sealed and connected with a second balloon communicated with the sixth opening of the tube body.
  • a medical catheter as described above one end of the first channel away from the joint assembly is provided with a second blocking member for blocking the opening of the channel, and the pipe body is located between the joint assembly and the second blocking member.
  • a fifth opening of the tube body connecting the first channel with the external environment is opened on the outer tube wall between the two tubes, and one end of the tube body close to the second blocking member is sealed and connected with the first balloon communicated with the second channel.
  • the outer tube wall of the tube body away from the joint assembly is sealed and connected with a first balloon communicated with the first channel and the second channel respectively, and the first channel is provided with
  • the sealing ring for the sealing connection of the tube body is provided with an inner ring opening for the micro camera to pass through to reach the inner cavity of the first balloon. After the micro camera passes through the inner ring opening, the sealing ring is tightly sleeved on the wire and the wire It can slide back and forth relative to the sealing ring.
  • the joint assembly further includes a fourth joint
  • the pipe body is also provided with a third channel
  • one end of the third channel extending into the joint assembly is provided with a plug for sealing
  • the outer tube wall of the tube body is provided with a second opening of the tube body that communicates with the third channel
  • the side wall of the sealing ring is provided with a second opening of the tube body respectively
  • the second opening of the sealing ring communicated with the fourth joint, the second opening of the sealing ring is located between the first outer rib and the second outer rib.
  • the inner ring surface of the sealing ring is provided with first inner grooves respectively communicating with the first opening of the sealing ring and the first opening of the pipe body, and the outer ring surface of the sealing ring There are first outer grooves which are respectively communicated with the second joint and the first opening of the sealing ring, and the inner ring surface of the sealing ring is provided with a second opening which is respectively communicated with the second opening of the sealing ring and the second opening of the pipe body.
  • the outer ring surface of the sealing ring is provided with a second outer groove respectively communicating with the fourth joint and the second opening of the sealing ring, and the inner ring surface of the sealing ring is provided with several grooves for An inner blocking portion for blocking the first inner groove and the second inner groove, and a plurality of outer blocking portions for blocking the first outer groove and the second outer groove are also provided on the outer ring surface of the sealing ring.
  • the port of the second interface is provided with a first one-way valve
  • the end of the second channel away from the joint assembly is provided with a second blocking member for blocking the channel port
  • the pipe body is provided with a fifth opening of the pipe body which communicates with the second passage on the outer pipe wall between the first opening of the pipe body and the second blocking member, and the outer pipe wall of the pipe body is sealed and connected with the pipe body.
  • the first balloon communicated with the fifth opening of the tubular body.
  • the tube body is provided with a sixth opening of the tube body that communicates with the second channel on the outer tube wall between the first opening of the tube body and the second blocking member, and the tube body is The outer tube wall is also sealed with a second balloon that communicates with the sixth opening of the tube body, the port of the fourth joint is provided with a second one-way valve, and the end of the third channel away from the joint assembly is provided with a
  • the tube body is provided with a tube body connecting the third channel with the external environment on the outer tube wall between the first balloon and the second balloon. Open your mouth.
  • the port of the fourth interface is provided with a second one-way valve
  • the end of the third channel away from the joint assembly is provided with an eighth blocking member for blocking the channel port
  • the tube body is provided with a sixth opening of the tube body that communicates with the third channel on the outer tube wall between the second opening of the tube body and the eighth blocking member, and the outer tube wall of the tube body is sealed and connected with the tube body.
  • a second balloon communicated with the sixth opening of the tube body.
  • the tube body is connected with a ninth blocking member for blocking the first channel.
  • the joint assembly further includes a fifth joint
  • the pipe body is further provided with a fourth channel
  • one end of the fourth channel extending into the joint assembly is provided with a plug for sealing
  • the outer pipe wall of the pipe body is provided with a third opening of the pipe body that communicates with the fourth channel
  • the inner ring surface of the sealing ring is provided with a third opening of the pipe body.
  • a third inner groove that communicates with each other, the side wall of the sealing ring is provided with a third opening of the sealing ring that communicates with the third inner groove, and the outer ring surface of the sealing ring is provided with a third opening respectively corresponding to the sealing ring
  • the third outer groove communicated with the fifth joint, a plurality of the inner blocking parts separate the first inner groove, the second inner groove and the third inner groove from each other, and a plurality of the outer blocking parts separate the first inner groove, the second inner groove and the third inner groove.
  • the first outer groove, the second outer groove and the third outer groove are separated from each other, and the third opening and the third outer groove of the sealing ring are located at the first outer rib and the second outer groove, respectively. between the ribs.
  • the joint assembly further includes a sixth joint
  • the pipe body is further provided with a fifth channel
  • one end of the fifth channel extending into the joint assembly is provided with a plug for sealing
  • the fifth blocking member of the channel opening the outer tube wall of the tube body is provided with a fourth opening of the tube body that communicates with the fifth channel
  • the inner ring surface of the sealing ring is provided with a fourth opening of the tube body
  • the side wall of the sealing ring is provided with a fourth opening of the sealing ring that communicates with the fourth inner groove
  • the outer ring surface of the sealing ring is provided with a fourth opening respectively corresponding to the sealing ring
  • the fourth outer groove communicated with the sixth joint, and several of the inner blocking parts separate the first inner groove, the second inner groove, the third inner groove and the fourth inner groove from each other, A plurality of the outer blocking parts separate the first outer groove, the second outer groove, the third outer groove and the fourth outer groove from each other, and the sealing ring ring
  • the pipe body, the joint assembly and the sealing structure can be separately produced separately first, and the pipe body, the joint assembly and the sealing structure can be mass-produced, which greatly reduces the production cost.
  • the body and the joint assembly are sealed together. After the pipe body and the joint assembly are sealed and connected, each joint on the joint assembly can communicate with the corresponding channel on the pipe body, and each group of joints and channels will not interfere with each other after being connected.
  • the pipe body and the joint assembly can be assembled using automated equipment; the present invention has a simple structure and a high degree of automated production. In actual production calculations, one worker has an effective working time of 10 hours a day, and can produce up to 12,000 pieces of the present invention. and the qualified rate is close to 100%.
  • the invention greatly improves the production efficiency, reduces the production cost very well, has strong practicability and outstanding economic benefits.
  • the use of the limiting structure in the present invention can well prevent the sealing structure from falling off the joint assembly when the pipe body is pulled, and the sealing structure is firmly fixed on the pipe body and the joint assembly. Between the two, the structure of the present invention is simpler and the use stability is strong.
  • the sealing ring and the pipe body of the present invention are sealed and connected by adhesive and then loaded into the joint assembly.
  • the sealing ring and the joint assembly are sealed and connected by interference fit, and the mass production cost of the present invention is lower. , the assembly is simpler and more convenient, the production efficiency is higher, and the assembled medical catheter is more stable.
  • the production process is simple, the qualified rate of finished products is high, the workload of product inspection can be greatly reduced, and the production cost can be greatly reduced.
  • Figure 1 is a cross-sectional view of one of the "Y" joint assembly structures
  • Figure 2 is a cross-sectional view of a "T-shaped" joint assembly structure
  • Figure 3 is a cross-sectional view of the second "Y" joint assembly structure
  • Figure 4 is a cross-sectional view of the third "Y" joint assembly structure
  • Figure 5 is a longitudinal cross-sectional view of one of the tubular structures
  • Figure 6 is a transverse cross-sectional view of one of the tubular structures
  • Figure 8 is a sectional view in the direction of the arrow at A-A in Figure 7;
  • Figure 10 is a cross-sectional view in the direction of the arrow at B-B in Figure 9;
  • FIG. 11 is a schematic plan view of the third sealing ring structure
  • Figure 12 is a sectional view in the direction of the arrow at C-C in Figure 11;
  • Embodiment 13 is a cross-sectional view of Embodiment 1 of the present invention.
  • Embodiment 14 is a cross-sectional view of Embodiment 2 of the present invention.
  • Embodiment 15 is a cross-sectional view of Embodiment 3 of the present invention.
  • Embodiment 16 is a cross-sectional view of Embodiment 4 of the present invention.
  • Embodiment 17 is a cross-sectional view of Embodiment 5 of the present invention.
  • Embodiment 6 of the present invention is a cross-sectional view of Embodiment 6 of the present invention.
  • Embodiment 7 of the present invention is a cross-sectional view of Embodiment 7 of the present invention.
  • Figure 20 is one of the sectional views of the eighth embodiment of the present invention.
  • 21 is a sectional view of the use state of the eighth embodiment of the present invention.
  • Embodiment 9 of the present invention is a cross-sectional view of Embodiment 9 of the present invention.
  • Figure 23 is a schematic plan view of the fourth seal ring structure
  • Figure 24 is a sectional view in the direction of the arrow at D-D in Figure 23;
  • Embodiment 10 of the present invention is a cross-sectional view of Embodiment 10 of the present invention.
  • Embodiment 12 of the present invention is a cross-sectional view of Embodiment 12 of the present invention.
  • Figure 28 is a cross-sectional view of Embodiment thirteen of the present invention.
  • Figure 29 is one of the perspective views of the fifth seal ring structure
  • Figure 30 is the second perspective view of the fifth seal ring structure
  • Figure 31 is a partial perspective view of the second pipe body structure
  • Figure 32 is a perspective view of the fifth joint assembly structure
  • Figure 33 is one of the perspective views of the sixth seal ring structure
  • Figure 34 is the second perspective view of the sixth seal ring structure
  • Figure 35 is a partial perspective view of the third tubular structure
  • Figure 36 is a perspective view of the sixth joint assembly structure
  • Figure 37 is a schematic diagram of a mold and a mold core used in the production of a medical catheter of the prior art.
  • a medical catheter includes a joint assembly 1 and a pipe body 2, the joint assembly 1 has at least three joints, and the joint assembly 1 includes a first joint 11, a second joint The second joint 12 and the third joint 13, one end of the pipe body 2 is sealed with the third joint 13 and partially extends into the first joint 11 to be sealed with the first joint 11, the pipe body 2 is provided with a A first channel 2a1 communicated with the first joint 11, a second channel 2a2 is also opened on the pipe body 2, and a first communication structure 3 is provided between the second channel 2a2 and the second joint 12 to communicate the two , the end of the second passage 2a2 extending into the joint assembly 1 is provided with a first blocking member 51 for blocking the passage opening, and the joint assembly 1 and the pipe body 2 are provided with a sealing connection between the two And the sealing structure 6 that separates the plurality of joint cavities of the joint assembly 1 from each other, the joint assembly 1, the pipe body 2 and the sealing structure 6 are separate structures, and the joint assembly 1 is integrated Formed
  • the joint assembly 1 has at least three joints, the joint assembly 1 is an integrally formed integral structure, the pipe body 2 is an integrally formed integral structure, and the pipe body 2 is provided with at least two channels, each channel is in the pipe body 2 are independent of each other and are not connected to each other. After the pipe body 2 is connected to one of the joints in the joint assembly 1, each channel of the pipe body 2 is connected with the remaining joints of the joint assembly 1 in a one-to-one correspondence.
  • the joint assembly 1 is provided with three joints, the joint assembly 1 has a "T" shape or a "Y" shape structure.
  • the sealing structure 6 may be an integrally formed integral structure, and the sealing structure 6 may also be an adhesive.
  • the pipe body 2, the joint assembly 1 and the sealing structure 6 are separated structures and can be produced separately in batches during production. Mass production can greatly reduce the production cost.
  • the sealing structure 6 is easy to assemble the pipe body during assembly. 2 and the joint assembly 1 are sealed together. After the two are sealed and connected, each joint on the joint assembly 1 can communicate with the corresponding channel on the pipe body 2, and each group of joints and channels will not interfere with each other after being connected.
  • the tube body 2 and the joint assembly 1 can also be assembled using automated equipment when they are assembled into a medical catheter.
  • the present invention has simple structure and high degree of automatic production. In actual production calculation, one worker can work for 10 hours a day at most, and can produce up to 12,000 medical catheters of the present invention, and the pass rate is close to 100%. The present invention greatly improves The production efficiency is improved, the production cost is reduced, the practicability is strong, and the economic benefit is outstanding.
  • the interface end of the third joint 13 is provided with a limiting structure 18 for restricting the sealing structure 6 from being separated from the joint assembly 1 .
  • the use of the limiting structure 18 can well prevent the sealing structure 6 from falling off the joint assembly 1 when the medical catheter is pulled, and the sealing structure 6 is firmly fixed on the tube body.
  • the structure of the present invention is simpler, and the assembled medical catheter has strong stability, which can reduce medical risks.
  • the first communication structure 3 includes a first opening 2b1 in the tube body that is opened on the outer tube wall of the tube body 2 and communicates with the second channel 2a2.
  • the sealing structure 6 includes an upper sealing ring 611 for sealingly connecting the pipe body 2 with the first joint 11, the sealing structure 6 also includes a lower sealing ring 612 for sealingly connecting the pipe body 2 and the third joint 13, the upper sealing ring 611 is spaced apart from the lower sealing ring 612 to form a communication space 6a5 that communicates with the first opening 2b1 of the pipe body and the second joint 12 .
  • the sealing structure 6 includes a plurality of first outer ribs 6d1 arranged between the upper sealing ring 611 and the first joint 11 and sealingly connecting the two, and the sealing structure 6 also includes a plurality of first outer ribs 6d1 arranged on the lower sealing ring.
  • the upper sealing ring 611 is located at the upper end of the first opening 2b1 of the pipe body, and the lower sealing ring 612 is located at the lower end of the first opening 2b1 of the pipe body.
  • the first opening 2b1 and the second joint 12 of the present invention have a simpler structure, more convenient and reliable assembly, and more reliable sealing and leakage prevention.
  • the sealing structure 6 includes a sealing ring 61
  • the first communication structure 3 includes a first opening of the pipe body opened on the outer pipe wall of the pipe body 2 and communicating with the second passage 2a2 2b1
  • the first communication structure 3 further includes a first opening 6a1 of the sealing ring which is opened on the side wall of the sealing ring 61 and communicates with the first opening 2b1 of the pipe body and the second joint 12 respectively.
  • the upper end of the sealing ring 61 seals the connection between the pipe body 2 and the first joint 11
  • the lower end of the sealing ring 61 seals the connection between the pipe body 2 and the third connection 13 .
  • the tube bodies 2 are mass-produced by extrusion process, and tube bodies 2 with different outer diameters and different number of channels can be produced, and then the tube bodies 2 of corresponding lengths can be cut according to the needs of medical catheters;
  • the joint assembly 1 is chemically produced, and the pipe bodies 2 with different channel numbers are matched with the joint assembly 1 corresponding to the number of joints. Since the joint assembly 1 is produced uniformly, the specifications of the third joint 13 will not change. In order to achieve the sealing connection between the pipe bodies 2 of different specifications and the joint assembly 1 of the same specification, it is necessary to mass-produce the sealing ring 61 separately.
  • the inner diameter of the sealing ring 61 matches the outer diameter of the pipe body 2 , and the outer diameter of the sealing ring 61 will be larger than the inner diameters of the third joint 13 and the first joint 11 .
  • the inner ring surface of the sealing ring 61 and the outer wall of the tube body 2 are sealedly connected by adhesive, and then the sealing ring After the opening 6a1 and the second joint 12 are aligned, the sealing ring 61 is inserted into the joint assembly 1, and the sealing ring 61 and the joint assembly 1 are tightly fitted with each other for sealing connection.
  • the outer diameter of the pipe body 2 will be different according to the production requirements, but the size of the third joint 13 of the mass-produced joint assembly 1 is different.
  • the mass production cost of the invention is lower, the assembly is simpler and more convenient, the production efficiency of the standardized mode is higher, and the quality stability of the assembled medical catheter is high.
  • the sealing structure 6 includes a plurality of first outer ribs 6d1 disposed between the sealing ring 61 and the first joint 11 and sealingly connect the two, and the sealing structure 6 also includes a plurality of first external ribs 6d1 disposed between the sealing ring 61 and the first joint 11 .
  • the second outer rib 6d2 is connected with the third joint 13 and seals the two.
  • the first opening 6a1 of the sealing ring is located between the first outer rib 6d1 and the second outer rib 6d2.
  • the first outer rib 6d2 The outer protruding rib 6d1 or the second outer protruding rib 6d2 and the sealing ring 61 are integrally formed into an integral structure. As shown in Fig. 11, Fig. 12, Fig.
  • the first outer rib 6d1 and the second outer rib 6d2 are annular rib, and the annular rib can also play a better sealing effect.
  • An outer rib 6d1 and a second outer rib 6d2 are integrally formed with the sealing ring 61, respectively.
  • the first communication structure 3 includes a first inner groove 6c1 disposed on the inner ring surface of the sealing ring 61 and communicating with the first opening 6a1 of the sealing ring and the first opening 2b1 of the pipe body respectively.
  • the first inner groove 6c1 is provided on the inner ring surface of the sealing ring 61 , and the first inner groove 6c1 may surround the sealing ring 61 A closed annular groove on the inner ring surface or a circular arc-shaped groove, the first inner groove 6c1 can also be a circular groove around the opening 6a1 of the first sealing ring, and the first opening 6a1 of the sealing ring is located in the A groove bottom of the inner groove 6c1.
  • the first communication structure 3 includes a first outer groove 6b1 disposed on the outer ring surface of the sealing ring 61 and communicating with the second joint 12 and the first opening 6a1 of the sealing ring, respectively.
  • the first outer groove 6b1 is provided on the outer ring surface of the sealing ring 61 , and the first outer groove 6b1 may be a surrounding of the sealing ring 61 A closed annular groove on the outer ring surface or a circular arc-shaped groove, the first outer groove 6b1 can also be a circular groove around the first opening 6a1 of the sealing ring, and the first opening 6a1 of the sealing ring is located in the A groove bottom of the outer groove 6b1.
  • the sealing ring 61 When the sealing ring 61 is installed into the joint assembly 1, due to the small size of the first opening 6a1 of the sealing ring, the first opening 6a1 of the sealing ring is sometimes not completely aligned with the second joint 12 due to positional deviation, thereby causing the second joint of the sealing ring.
  • the communication effect between an opening 6a1 and the second connector 12 is not ideal.
  • the smooth communication between the first opening 6a1 of the sealing ring and the second joint 12 will not be affected, and the structure of the present invention is further improved. Simple, simpler and more convenient assembly, higher production efficiency, stronger stability of the assembled medical catheter, and higher finished product qualification rate.
  • the sealing structure 6 is an adhesive, and the adhesive seals the outer wall of the pipe body 2 and the inner wall of the joint assembly 1 together.
  • a communication structure 3 includes a first opening 2b1 of the pipe body which is opened on the outer pipe wall of the pipe body 2 and communicates with the second passage 2a2 and the second joint 12 respectively.
  • the outer pipe wall of the pipe body 2 and the inner wall of the third joint 13 are bonded and sealed.
  • the sealing structure 6 is an adhesive filled between the outer pipe wall of the pipe body 2 and the inner wall of the joint assembly 1. The adhesive makes the pipe body 2
  • the connection with the second joint 12 and the first joint 11 is more sealed and tight, the assembly is simpler and more convenient, and the production efficiency is higher.
  • first outer ribs 6d1 between the pipe body 2 and the first joint 11 for sealingly connecting the two, and there are several between the pipe body 2 and the third joint 13 for sealingly connecting the two.
  • the second external convex rib 6d2, the first opening 2b1 of the tube body is located between the first external convex rib 6d1 and the second external convex rib 6d2.
  • the first outer rib 6d1 and the second outer rib 6d2 are annular rib, and the annular rib can also play a better sealing effect.
  • the two outer ribs 6d2 are respectively pasted on the pipe body 2 by an adhesive, and the pipe body 2 and the joint assembly 1 are also sealedly connected by the adhesive, and the first outer ribs 6d1 and the second outer ribs 6d2 will press the joint
  • the assembly 1 makes the connection between the tube body 2 and the joint assembly 1 tighter, and the sealing performance is better. There is no conduction between the joints in the joint assembly 1, the structure is simpler, and the assembled medical catheter is stable. stronger.
  • the first communication structure 3 includes a first outer groove 6b1 which is provided on the outer pipe wall of the pipe body 2 and communicates with the second joint 12 and the first opening 2b1 of the pipe body respectively.
  • the first outer groove 6b1 is provided on the outer wall of the pipe body 2
  • the first outer groove 6b1 can be a closed annular groove surrounding the outer wall of the pipe body 2 or a circular arc-shaped groove.
  • the first outer groove 6b1 can also be a circular groove surrounding the first opening 2b1 of the tube body, and the first tube body opening 2b1 is located at the bottom of the first outer groove 6b1.
  • the first opening 2b1 of the pipe body When the pipe body 2 and the joint assembly 1 are sealedly connected with the adhesive, because the first opening 2b1 of the pipe body is small, the first opening 2b1 of the pipe body sometimes has a positional deviation and is not completely aligned with the second joint 12, thereby As a result, the communication effect between the first opening 2b1 of the pipe body and the second joint 12 is not ideal.
  • the first outer groove 6b1 By arranging the first outer groove 6b1, even if there is a certain positional deviation after the pipe body 2 is installed in the joint assembly 1, the smooth communication between the first opening 2b1 of the pipe body and the second joint 12 will not be affected, and the structure of the present invention is further improved. Simple, simpler and more convenient assembly, higher production efficiency, and stronger stability of the assembled medical catheter.
  • the limiting structure 18 is a limiting portion where the end of the third connector 13 extends toward the center of the port and is narrowed. As shown in Figure 4, Figure 13 to Figure 15, Figure 17 to Figure 22, the end of the third joint 13 is extended and narrowed toward the center of the port to form a stopper.
  • the sealing ring 61 and the pipe body 2 are first assembled.
  • One end of the pipe body 2 is sealed and connected by adhesive, and then the other end of the pipe body 2 enters the joint assembly 1 from the port of the first joint 11 and protrudes from the third joint 13, and the other end of the pipe body 2 is pulled hard to make the sealing ring 61 is tightly assembled with the joint assembly 1 to be sealed and connected, and the limiting part can well prevent the sealing ring 61 from being detached from the third joint 13 when the pipe body 2 is excessively pulled.
  • the structure is simpler, the assembly is more convenient, and the production efficiency is higher. , the sealing effect and anti-shedding effect of the assembled medical catheter are better.
  • the port of the second interface 12 is provided with a first one-way valve 171 .
  • the first one-way valve 171 only allows gas or liquid to flow from the outside of the second joint 12 to the inside, and can prevent the gas or liquid from leaking from the port of the second joint 12 . Since the second joint 12, the first communication structure 3, and the second channel 2a2 are connected in sequence, inserting the syringe into the first one-way valve 171 can inject liquid into the second joint 12, and the liquid will reach the body of the patient, or A syringe is used to draw out the patient's body fluids for testing.
  • One end of the second passage 2a2 away from the joint assembly 1 is provided with a second blocking member 52 for blocking the passage opening, and the pipe body 2 is between the first opening 2b1 of the pipe body and the second blocking member 52
  • the outer tube wall of the tube body 2 is provided with a fifth opening 2b5 of the tube body that communicates with the second channel 2a2, and the outer tube wall of the tube body 2 is sealed with a first balloon 71 that communicates with the fifth opening 2b5 of the tube body.
  • the first balloon 71 is located at the end of the tubular body 2 away from the joint assembly 1 , the first balloon 71 has elasticity, and the first balloon 71 is in a contracted state when it is not inflated , this embodiment can be used as a urinary catheter, insert the tube body 2 into the urinary catheter of the patient, insert the syringe into the first one-way valve 171, inject sterile water into the second joint 12, and after the first balloon 71 is inflated The tube body 2 is fixed in the bladder by the expansion and enlargement, and then the urine in the patient can be drawn out of the body through the first joint 11 and the first channel 2a1.
  • the tube body 2 is also provided with a sixth tube body opening 2b6 which communicates with the second passage 2a2 on the outer tube wall between the tube body first opening 2b1 and the second blocking member 52.
  • a second balloon 72 communicated with the sixth opening 2b6 of the tube body is sealed and connected to the tube wall.
  • the second channel 2a2 communicates with the first balloon 71 and the second balloon 72, and this embodiment can be used as a catheter for urethral compression and hemostasis.
  • this embodiment can be used as a medical catheter for treating prostate diseases.
  • One end of the first channel 2a1 away from the joint assembly 1 is provided with a second blocking member 52 for blocking the opening of the channel.
  • the body 2 is provided with a fifth opening 2b5 on the outer pipe wall between the joint assembly 1 and the second blocking member 52, which communicates the first channel 2a1 with the external environment, and the pipe body 2 is close to the second seal.
  • One end of the blocking member 52 is sealingly connected with the first balloon 71 which communicates with the second channel 2a2.
  • a first balloon that communicates with the first channel 2a1 and the second channel 2a2 is sealed and connected to the outer tube wall of the tube body 2 away from the joint assembly 1, respectively.
  • the first channel 2a1 is provided with a sealing ring 53 which is sealingly connected with the tube body 2, and the sealing ring 53 is provided with an inner ring opening 54 for the micro camera 81 to pass through to reach the inner cavity of the first balloon 71 , after the micro camera 81 passes through the inner ring opening 54 , the sealing ring 53 is tightly sheathed on the wire 82 and the wire 82 can slide back and forth relative to the sealing ring 53 .
  • the sealing ring 53 can be arranged at any position in the first passage 2a1, and the sealing ring 53 is relatively fixed to the pipe body 2.
  • the wire 82 is electrically connected to the micro camera 81 , and the wire 82 passes through the inner ring opening 54 .
  • the wire 82 can also be sheathed with a steel pipe and then passed through the inner ring opening 54 , and the diameter of the steel pipe is larger than the diameter of the inner ring opening 54 , so that the steel pipe and the sealing ring 53 maintain a sealing fit.
  • This embodiment can be used as a hysterography catheter.
  • a balloon 71 is filled with transparent gas or liquid to expand the first balloon 71 .
  • the inflated first balloon 71 can fix the tube body 2 in the uterus, and is also convenient for the micro camera 81 to take pictures.
  • the joint assembly 1 further includes a fourth joint 14 , and a third channel 2a3 is further opened on the pipe body 2 , and the third channel 2a3 extends into the joint assembly 1 .
  • One end is provided with a third blocking member 55 for blocking the passage opening
  • the outer pipe wall of the pipe body 2 is provided with a second pipe body opening 2b2 which communicates with the third passage 2a3, and the side of the sealing ring 61
  • the wall is provided with a second opening 6a2 of the sealing ring which communicates with the second opening 2b2 of the pipe body and the fourth joint 14 respectively.
  • the second opening 6a2 of the sealing ring is located between the first outer rib 6d1 and the second outer rib 6d2. between.
  • the inner ring surface of the sealing ring 61 is provided with first inner grooves 6c1 respectively communicating with the first opening 6a1 of the sealing ring and the first opening 2b1 of the pipe body, and the outer ring surface of the sealing ring 61 is provided with respectively
  • the first outer groove 6b1 communicated with the second joint 12 and the first opening 6a1 of the sealing ring
  • the inner ring surface of the sealing ring 61 is provided with the second opening 6a2 of the sealing ring and the second opening 2b2 of the pipe body respectively.
  • the second inner groove 6c2 of the sealing ring 61 is provided with a second outer groove 6b2 respectively communicating with the fourth joint 14 and the second opening 6a2 of the sealing ring.
  • the inner ring of the sealing ring 61 There are several inner blocking parts 62 on the surface for blocking the first inner groove 6c1 and the second inner groove 6c2, and the outer ring surface of the sealing ring 61 is also provided with several internal blocking parts for blocking the first outer groove.
  • the first outer convex rib 6d1, the second outer convex rib 6d2, the inner blocking portion 62, the outer blocking portion 63 and the sealing ring 61 are integrally formed into an integral structure, and the inner blocking portion 62 is distributed in the first inner concave Between the groove 6c1 and the second inner groove 6c2, the outer blocking portion 63 is distributed between the first outer groove 6b1 and the second outer groove 6b2; the joint assembly 1 has four joints, the pipe body 2 has three channels, The sealing ring 61 has two openings.
  • the first joint 11 communicates with the first channel 2a1 to form a first set of communication pipelines
  • the second joint 12 Connecting with the second channel 2a2 forms a second group of communication pipelines
  • the fourth joint 14 communicates with the third channel 2a3 to form a third group of communication pipelines
  • the communication pipelines of each group are independent of each other and will not interfere with each other.
  • the port of the second interface 12 is provided with a first one-way valve 171, and the end of the second passage 2a2 away from the joint assembly 1 is provided with a second blocking member 52 for blocking the passage port.
  • a fifth opening 2b5 of the tube body is opened on the outer tube wall between the first opening 2b1 of the tube body and the second blocking member 52, which is communicated with the second channel 2a2, and the outer tube wall of the tube body 2 is sealed and connected
  • the fourth joint 14 communicates with the third channel 2a3 to form a third set of communication pipelines, which can be used as pipelines for injecting drugs into the patient.
  • This embodiment has more functions and better integration. high.
  • this embodiment can be used as a medical balloon catheter for the treatment of prostate diseases.
  • the tube body 2 is provided with a first opening 2b1 and a second blocking member 52 on the outer tube wall of the tube body.
  • the sixth opening 2b6 of the tube body communicated with the two channels 2a2, the outer tube wall of the tube body 2 is also sealedly connected with a second balloon 72 that communicates with the sixth opening 2b6 of the tube body, and the port of the fourth joint 14 is provided with
  • the outer tube wall between the two balloons 72 is provided with a seventh opening 2b7 of the tube body which communicates the third channel 2a3 with the external environment.
  • the second channel 2a2 is connected with the first balloon 71 and the second balloon 72. Insert the tube body 2 into the patient's urethra, insert the syringe into the first one-way valve 171, and inject sterile gas or aseptic gas into the second joint 12. Liquid, the first balloon 71 and the second balloon 72 are inflated and expanded and enlarged to fix the tube body 2 in the urethra.
  • the prostate is now located between the first balloon 71 and the second balloon 72, and the other A syringe is inserted into the second one-way valve 172, and the medicine is injected into the fourth joint 14, and the medicine will reach the prostate in a directional manner, and the treatment is more precise and efficient.
  • this embodiment can be used as a balloon catheter for uterine expansion.
  • the port of the fourth interface 14 is provided with a second one-way valve 172
  • the end of the third channel 2a3 away from the joint assembly 1 is provided with a second one-way valve 172 .
  • the sixth opening 2b6 of the tube body, the outer tube wall of the tube body 2 is sealed and connected with a second balloon 72 that communicates with the sixth opening 2b6 of the tube body.
  • the pipe body 2 may also be connected with a ninth blocking member 59 for blocking the first passage 2a1.
  • the joint assembly 1 further includes a fifth joint 15 , and a fourth channel 2a4 is further opened on the pipe body 2 , and the fourth channel 2a4 extends into the joint assembly 1 .
  • One end is provided with a fourth blocking member 56 for blocking the passage opening.
  • the outer pipe wall of the pipe body 2 is provided with a third pipe body opening 2b3 which communicates with the fourth passage 2a4.
  • the annular surface is provided with a third inner groove 6c3 which communicates with the third opening 2b3 of the pipe body.
  • the outer ring surface of the sealing ring 61 is provided with a third outer groove 6b3 which communicates with the third opening 6a3 of the sealing ring and the fifth joint 15 respectively.
  • the inner groove 6c2 and the third inner groove 6c3 are separated from each other, and a plurality of the outer blocking portions 63 separate the first outer groove 6b1, the second outer groove 6b2 and the third outer groove 6b3 from each other. Separated, the third opening 6a3 and the third outer groove 6b3 of the sealing ring are respectively located between the first outer rib 6d1 and the second outer rib 6d2.
  • the inner blocking portion 62 is located between the first inner groove 6c1 and the second inner groove 6c2, between the second inner groove 6c2 and the third inner groove 6c3, and the third inner groove 6c3 and the first inner groove, respectively.
  • the outer blocking parts 63 are respectively located between the first outer groove 6b1 and the second outer groove 6b2, between the second outer groove 6b2 and the third outer groove 6b3, and between the third outer groove 6b3 and the third outer groove 6b3.
  • the joint assembly 1 has five joints
  • the pipe body 2 has four channels
  • the sealing ring 61 has three openings
  • the fifth joint 15 communicates with the fourth channel 2a4 to form a fourth group of communication pipelines
  • the fourth group of communication pipes and the other three groups of communication pipes are independent of each other and will not interfere with each other.
  • the joint assembly 1 further includes a sixth joint 16 , and a fifth channel 2a5 is further opened on the pipe body 2 , and the fifth channel 2a5 extends into the joint assembly 1 .
  • One end is provided with a fifth blocking member 57 for blocking the passage opening
  • the outer pipe wall of the pipe body 2 is provided with a fourth pipe body opening 2b4 which communicates with the fifth passage 2a5, and the inner pipe of the sealing ring 61
  • a fourth inner groove 6c4 communicated with the fourth opening 2b4 of the pipe body is opened on the annular surface, and a fourth opening 6a4 of the sealing ring communicated with the fourth inner groove 6c4 is opened on the side wall of the sealing ring 61.
  • the outer ring surface of the sealing ring 61 is provided with a fourth outer groove 6b4 which communicates with the fourth opening 6a4 of the sealing ring and the sixth joint 16 respectively.
  • the inner groove 6c2, the third inner groove 6c3 and the fourth inner groove 6c4 are separated from each other, and a plurality of the outer blocking parts 63 separate the first outer groove 6b1, the second outer groove 6b2, the third The outer groove 6b3 and the fourth outer groove 6b4 are separated from each other, and the fourth opening 6a4 and the fourth outer groove 6b4 of the sealing ring are respectively located between the first outer rib 6d1 and the second outer rib 6d2 .
  • the inner blocking portion 62 is located between the first inner groove 6c1 and the second inner groove 6c2, between the second inner groove 6c2 and the third inner groove 6c3, and the third inner groove 6c3 and the fourth inner groove, respectively.
  • 6c4 between the fourth inner groove 6c4 and the first inner groove 6c1
  • the outer blocking portion 63 is located between the first outer groove 6b1 and the second outer groove 6b2, the second outer groove 6b2 and the first outer groove 6b2 respectively.
  • the joint assembly 1 has six joints, the pipe The body 2 has five channels, the sealing ring 61 has four openings, the sixth joint 16 communicates with the fifth channel 2a5 to form a fifth group of communication pipelines, and the fifth group of communication pipelines and the other four groups of communication pipelines are independent of each other. will interfere.
  • the joint assembly 1, the pipe body 2 and the sealing ring 61 are made of PE, PP, PVC, PU, TPE, ABS and other plastics, rubber or silicone, respectively.
  • the first blocking member 51, the second blocking member 52, The third blocking member 55 , the fourth blocking member 56 , the fifth blocking member 57 , and the eighth blocking member 58 are respectively plastic, rubber or latex filled in each channel port.
  • the invention has simple production process and high qualified rate of finished products during production, can greatly reduce the workload of product inspection and reduce production cost well.

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Abstract

一种医用导管，包括有接头总成（1）和管体（2），接头总成（1）包括有第一接头（11）、第二接头（12）和第三接头（13），管体（2）的一端与第三接头（13）密封连接且部分伸入第一接头（11）内而与第一接头（11）密封连接，管体（2）上开设有与第一接头（11）相通的第一通道（2a1），管体（2）上还开设有第二通道（2a2），第二通道（2a2）与第二接头（12）之间设有使二者相通的第一连通结构（3），第二通道（2a2）伸入接头总成（1）的一端设有用于封堵其通道口的第一封堵件（51），接头总成（1）与管体（2）之间设有使二者密封连接且使接头总成（1）的多个接头（11，12，13）内腔相互分隔开的密封结构（6），接头总成（1）、管体（2）和密封结构（6）三者为分体结构，接头总成（1）是一体成型的整体结构，管体（2）是一体成型的整体结构。该医用导管结构简单，自动化生产程度高，生产成本低，实用性强，经济效益突出显著。

Description

一种医用导管 [技术领域]
本发明涉及医疗器械领域，尤其涉及一种医用导管。
[背景技术]
医用导管是常见的插入式医疗器械，按照用途可分为导尿管、止血导管、子宫造影导管等，医用导管可以将病人体内的积液排出到体外，也可以向病人体内输送药物或置入其他细长器械。医用导管的材质主要包括乳胶、天然橡胶、聚氯乙烯、硅胶等，医用导管的结构包括有管体以及与管体密封连接的多个接头，管体内设有多个独立的通道，每个通道对应一个与其相连通的接头。现有的医用导管主要结构一般由管体和接头组成，下面以具有两个独立通道的管体为例，结合图37具体说明其生产过程：首先通过挤出工艺制造出具有两个独立通道的管体2，裁剪一定长度的管体2，模芯包括有第一模芯93和第二模芯94，模具包括有下模具91和上模具92，将第一模芯93和第二模芯94分别插入管体2的各个通道，然后将第一模芯93和第二模芯94放进下模具91的下模腔911中，将上模具92与下模具91合起来，下模腔911与上模腔921围成用于形成接头的模腔，通过高温高压将橡胶或其他高分子材料经由上模具92的通孔96注入模腔内，橡胶或其他高分子材料填满模腔内的空隙，接头成型后分开上模具92和下模具91，将第一模芯93和第二模芯94从下模具91中拆卸下来，将第一模芯93和第二模芯94从管体2中拆出，即形成与管体2密封连接的接头，从而制成医用导管。
现有结构的医用导管的生产过程具有以下缺陷：
第一，由于管体2的各个独立通道直径微小，工人需要花费大量的时间将模芯对准插入各个独立通道，当通道数量较多或通道直径较小时，工人可能还需要放大镜和专用治具才能很好的将更多的模芯插入管体2对应的独立通道中，该生产过程大大的增加了生产时间，效率低下，并且由于管体2是弹性材料无法进行定位，从而无法实现自动化的生产，造成医用导管成品的成本很高，在实际的生产测算中，一个工人一天有效工作时间为10小时，最多能生产1500个现有结构的医用导管，并且成品的合格率为90％左右；
第二，模芯与接头之间存在反扣位，接头成型后，接头从模芯拆卸出来十分困难，并且可能会破坏医用导管的结构，需要工人花费较多的时间和精力小心翼翼地将接头从模芯拆卸下来，该生产过程的生产时间长、生产效率低，成品率低；
第三、由于生产过程工序多，人为因素造成的质量问题就多，检验人员数量和工作量就要增加，提高了生产成本。
[发明内容]
本发明的目的是针对现有技术的不足，提出一种新型的医用导管，本发明结构简单，在生产时能够先分别单独生产管体、接头总成和密封结构，然后将三者组装在一起，生产本发明的医用导管所需要的人工少，自动化生产程度高，大大的节省生产时间，从而大大的提高生产效率，有效降低生产成本，大大提高合格率，市场竞争力大。
为解决上述技术问题，本发明所采用的技术方案是：
一种医用导管，包括有接头总成和管体，所述接头总成至少有三个 接头，所述接头总成包括有第一接头、第二接头和第三接头，所述管体的一端与第三接头密封连接且部分伸入第一接头内而与第一接头密封连接，所述管体上开设有与第一接头相通的第一通道，所述管体上还开设有第二通道，所述第二通道与第二接头之间设有使二者相通的第一连通结构，所述第二通道伸入接头总成的一端设有用于封堵其通道口的第一封堵件，所述接头总成与管体之间设有使二者密封连接且使接头总成的多个接头内腔相互分隔开的密封结构，所述接头总成、管体和密封结构三者为分体结构，所述接头总成是一体成型的整体结构，所述管体是一体成型的整体结构。
如上所述的一种医用导管，所述第三接头的接口端部设有用于限制密封结构脱离接头总成的限位结构。
如上所述的一种医用导管，所述第一连通结构包括有开设在管体的外管壁上且与第二通道相通的管体第一开口，所述密封结构包括有使管体与第一接头密封连接的上密封环，所述密封结构还包括有使管体与第三接头密封连接的下密封环，所述上密封环与下密封环间隔设置而形成连通管体第一开口和第二接头的连通空间。
如上所述的一种医用导管，所述密封结构包括有若干个设置在上密封环与第一接头之间且使二者密封连接的第一外凸筋，所述密封结构还包括有若干个设置在下密封环与第三接头之间且使二者密封连接的第二外凸筋，所述第一外凸筋与上密封环为一体成型的整体结构，所述第二外凸筋与下密封环为一体成型的整体结构。
如上所述的一种医用导管，所述密封结构包括有密封环，所述第一 连通结构包括有开设在管体的外管壁上且与第二通道相通的管体第一开口，所述第一连通结构还包括有开设在密封环的侧壁上且分别与管体第一开口和第二接头相连通的密封环第一开口。
如上所述的一种医用导管，所述密封结构包括有若干个设置在密封环与第一接头之间且使二者密封连接的第一外凸筋，所述密封结构还包括有若干个设置在密封环与第三接头之间且使二者密封连接的第二外凸筋，所述密封环第一开口位于第一外凸筋与第二外凸筋之间，所述第一外凸筋或所述第二外凸筋与密封环为一体成型的整体结构。
如上所述的一种医用导管，所述第一连通结构包括有设置在密封环的内环面上并且分别与密封环第一开口和管体第一开口相连通的第一内凹槽。
如上所述的一种医用导管，所述第一连通结构包括有设置在密封环的外环面上并且分别与第二接头和密封环第一开口相连通的第一外凹槽。
如上所述的一种医用导管，所述密封结构为粘合剂，所述粘合剂将管体的外管壁与接头总成的内壁密封粘贴在一起，所述第一连通结构包括有开设在管体的外管壁上且分别与第二通道和第二接头相连通的管体第一开口。
如上所述的一种医用导管，所述管体与第一接头之间设有若干个使二者密封连接的第一外凸筋，所述管体与第三接头之间设有若干个使二者密封连接的第二外凸筋，所述管体第一开口位于第一外凸筋与第二外凸筋之间。
如上所述的一种医用导管，所述第一连通结构包括有设置在管体的外管壁上并且分别与第二接头和管体第一开口相连通的第一外凹槽。
如上所述的一种医用导管，所述限位结构为第三接头的端部向端口中心延伸收窄的限位部。
如上所述的一种医用导管，所述第二接口的端口设有第一单向阀。
如上所述的一种医用导管，所述第二通道远离接头总成的一端设有用于封堵其通道口的第二封堵件，所述管体在管体第一开口和第二封堵件之间的外管壁上开设有与第二通道相通的管体第五开口，所述管体的外管壁上密封连接有与管体第五开口相通的第一球囊。
如上所述的一种医用导管，所述管体在管体第一开口和第二封堵件之间的外管壁上还开设有与第二通道相通的管体第六开口，所述管体的外管壁上密封连接有与管体第六开口相通的第二球囊。
如上所述的一种医用导管，所述第一通道远离接头总成的一端设有用于封堵其通道口的第二封堵件，所述管体在接头总成和第二封堵件之间的外管壁上开设有将第一通道与外部环境相连通的管体第五开口，所述管体靠近第二封堵件的一端密封连接有与第二通道相通的第一球囊。
如上所述的一种医用导管，所述管体远离接头总成的外管壁上密封连接有分别与第一通道和第二通道相通的第一球囊，所述第一通道上设有与管体密封连接的密封圈，所述密封圈上设有供微型摄像头穿过而到达第一球囊内腔的内环开口，微型摄像头穿过内环开口后密封圈紧套在导线上且导线能相对密封圈往复滑动。
如上所述的一种医用导管，所述接头总成还包括有第四接头，所述 管体上还开设有第三通道，所述第三通道伸入接头总成的一端设有用于封堵其通道口的第三封堵件，所述管体的外管壁上开设有与第三通道相通的管体第二开口，所述密封环的侧壁上开设有分别与管体第二开口和第四接头相连通的密封环第二开口，所述密封环第二开口位于第一外凸筋与第二外凸筋之间。
如上所述的一种医用导管，所述密封环的内环面上开设有分别与密封环第一开口和管体第一开口相连通的第一内凹槽，所述密封环的外环面上开设有分别与第二接头和密封环第一开口相连通的第一外凹槽，所述密封环的内环面上开设有分别与密封环第二开口和管体第二开口相通的第二内凹槽，所述密封环的外环面上开设有分别与第四接头和密封环第二开口相通的第二外凹槽，所述密封环的内环面上设有若干个用于阻隔第一内凹槽与第二内凹槽的内阻隔部，所述密封环的外环面上还设有若干个用于阻隔第一外凹槽与第二外凹槽的外阻隔部。
如上所述的一种医用导管，所述第二接口的端口设有第一单向阀，所述第二通道远离接头总成的一端设有用于封堵其通道口的第二封堵件，所述管体在管体第一开口和第二封堵件之间的外管壁上开设有与第二通道相通的管体第五开口，所述管体的外管壁上密封连接有与管体第五开口相通的第一球囊。
如上所述的一种医用导管，所述管体在管体第一开口和第二封堵件之间的外管壁上开设有与第二通道相通的管体第六开口，所述管体的外管壁上还密封连接有与管体第六开口相通的第二球囊，所述第四接头的端口设有第二单向阀，所述第三通道远离接头总成的一端设有用于封堵 其通道口的第八封堵件，所述管体在第一球囊与第二球囊之间的外管壁上开设有将第三通道与外部环境相连通的管体第七开口。
如上所述的一种医用导管，所述第四接口的端口设有第二单向阀，所述第三通道远离接头总成的一端设有用于封堵其通道口的第八封堵件，所述管体在管体第二开口和第八封堵件之间的外管壁上开设有与第三通道相通的管体第六开口，所述管体的外管壁上密封连接有与管体第六开口相通的第二球囊。
如上所述的一种医用导管，所述管体连接有用于封堵第一通道的第九封堵件。
如上所述的一种医用导管，所述接头总成还包括有第五接头，所述管体上还开设有第四通道，所述第四通道伸入接头总成的一端设有用于封堵其通道口的第四封堵件，所述管体的外管壁上开设有与第四通道相通的管体第三开口，所述密封环的内环面上开设有与管体第三开口相通的第三内凹槽，所述密封环的侧壁上开设有与第三内凹槽相通的密封环第三开口，所述密封环的外环面上开设有分别与密封环第三开口和第五接头相通的第三外凹槽，若干个所述内阻隔部将第一内凹槽、第二内凹槽与第三内凹槽三者相互分隔开，若干个所述外阻隔部将第一外凹槽、第二外凹槽与第三外凹槽三者相互分隔开，所述密封环第三开口和第三外凹槽分别位于第一外凸筋与第二外凸筋之间。
如上所述的一种医用导管，所述接头总成还包括有第六接头，所述管体上还开设有第五通道，所述第五通道伸入接头总成的一端设有用于封堵其通道口的第五封堵件，所述管体的外管壁上开设有与第五通道相 通的管体第四开口，所述密封环的内环面上开设有与管体第四开口相通的第四内凹槽，所述密封环的侧壁上开设有与第四内凹槽相通的密封环第四开口，所述密封环的外环面上开设有分别与密封环第四开口和第六接头相通的第四外凹槽，若干个所述内阻隔部将第一内凹槽、第二内凹槽、第三内凹槽与第四内凹槽四者相互分隔开，若干个所述外阻隔部将第一外凹槽、第二外凹槽、第三外凹槽与第四外凹槽四者相互分隔开，所述密封环第四开口和第四外凹槽分别位于第一外凸筋与第二外凸筋之间。
本发明的有益效果是：
1、本发明在生产时能够先单独分别生产管体、接头总成和密封结构，管体、接头总成和密封结构能够批量化生产，大大的降低生产成本，通过密封结构很容易的将管体和接头总成密封连接在一起，管体和接头总成密封连接后接头总成上的各个接头与管体上对应的通道能够连通，各组接头和通道连通后相互之间不会干扰，管体和接头总成在组装时能够使用自动化设备进行组装；本发明结构简单，自动化生产程度高，在实际的生产测算中，一个工人一天有效工作时间为10小时，最多能生产12000个本发明的医用导管，并且合格率接近100％，本发明大大的提高了生产效率，很好的降低了生产成本，实用性强，经济效益突出显著。
2、管体和接头总成组装完成后，本发明使用限位结构能够很好的避免管体在被拉扯时密封结构从接头总成上脱落，密封结构被牢固地固定在管体与接头总成之间，本发明结构更加简单，使用稳定性强。
3、本发明的密封环与管体通过粘合剂密封连接后再装入接头总成 中，密封环与接头总成之间通过过盈配合而密封连接，本发明批量化生产的成本更低，组装更加简单方便，生产效率更高，组装后的医用导管稳定性更强。
4、本发明在生产时生产工序简单，成品合格率高，能够大大的减少产品检验的工作量，很好的降低生产成本。
[附图说明]
图1是“Y”形接头总成结构之一的剖视图；
图2是“T形”接头总成结构的剖视图；
图3是“Y”形接头总成结构之二的剖视图；
图4是“Y”形接头总成结构之三的剖视图；
图5是管体结构之一的纵向剖视图；
图6是管体结构之一的横向剖视图；
图7是密封环结构之一的平面示意图；
图8是图7中A-A处箭头方向的剖视图；
图9是密封环结构之二的平面示意图；
图10是图9中B-B处箭头方向的剖视图；
图11是密封环结构之三的平面示意图；
图12是图11中C-C处箭头方向的剖视图；
图13是本发明的实施例一的剖视图；
图14是本发明的实施例二的剖视图；
图15是本发明的实施例三的剖视图；
图16是本发明的实施例四的剖视图；
图17是本发明的实施例五的剖视图；
图18是本发明的实施例六的剖视图；
图19是本发明的实施例七的剖视图；
图20是本发明的实施例八的剖视图之一；
图21是本发明的实施例八的使用状态剖视图；
图22是本发明的实施例九的剖视图；
图23是密封环结构之四的平面示意图；
图24是图23中D-D处箭头方向的剖视图；
图25是本发明的实施例十的剖视图；
图26是本发明的实施例十一的剖视图；
图27是本发明的实施例十二的剖视图；
图28是本发明的实施例十三的剖视图；
图29是密封环结构之五的立体图之一；
图30是密封环结构之五的立体图之二；
图31是管体结构之二的局部立体图；
图32是接头总成结构之五的立体图；
图33是密封环结构之六的立体图之一；
图34是密封环结构之六的立体图之二；
图35是管体结构之三的局部立体图；
图36是接头总成结构之六的立体图；
图37是现有结构的医用导管生产时所用模具和模芯的示意图。
[具体实施方式]
下面结合附图与本发明的实施方式作进一步详细的描述：
如图1至图36所示，一种医用导管，包括有接头总成1和管体2，所述接头总成1至少有三个接头，所述接头总成1包括有第一接头11、第二接头12和第三接头13，所述管体2的一端与第三接头13密封连接且部分伸入第一接头11内而与第一接头11密封连接，所述管体2上开设有与第一接头11相通的第一通道2a1，所述管体2上还开设有第二通道2a2，所述第二通道2a2与第二接头12之间设有使二者相通的第一连通结构3，所述第二通道2a2伸入接头总成1的一端设有用于封堵其通道口的第一封堵件51，所述接头总成1与管体2之间设有使二者密封连接且使接头总成1的多个接头内腔相互分隔开的密封结构6，所述接头总成1、管体2和密封结构6三者为分体结构，所述接头总成1是一体成型的整体结构，所述管体2是一体成型的整体结构。
具体地，接头总成1至少有三个接头，接头总成1是一体成型的整体结构，管体2是一体成型的整体结构，管体2内设有至少两个通道，每个通道在管体2内是相互独立的，彼此不相连通，管体2与接头总成1中的一个接头连接后，管体2的各个通道分别与接头总成1的剩余接头一一对应连通。当接头总成1设有三个接头时，接头总成1呈“T”形或者“Y”形的结构。密封结构6可以是一体成型的整体结构，密封结构6也可以是粘合剂。
管体2、接头总成1和密封结构6三者为分体结构并且生产时可以分开单独批量化生产，批量化生产可以大大的降低生产成本，在组装时密封结构6很容易的将管体2和接头总成1密封连接在一起，二者密封 连接后接头总成1上的各个接头与管体2上对应的通道能够连通，并且各组接头和通道连通后相互之间不会干扰，管体2和接头总成1在组装成医用导管时也可以使用自动化设备进行组装。本发明结构简单，自动化生产程度高，在实际的生产测算中，一个工人一天有效工作时间为10小时，最多能生产12000个本发明的医用导管，并且合格率接近100％，本发明大大的提高了生产效率，很好的降低了生产成本，实用性强，经济效益突出显著。
所述第三接头13的接口端部设有用于限制密封结构6脱离接头总成1的限位结构18。管体2和接头总成1组装完成后，使用限位结构18能够很好的避免医用导管在被拉扯时密封结构6从接头总成1上脱落出来，密封结构6被牢固地固定在管体2与接头总成1之间，本发明结构更加简单，组装后的医用导管稳定性强，可减少医疗风险。
如图17所示，在本实施例中，所述第一连通结构3包括有开设在管体2的外管壁上且与第二通道2a2相通的管体第一开口2b1，所述密封结构6包括有使管体2与第一接头11密封连接的上密封环611，所述密封结构6还包括有使管体2与第三接头13密封连接的下密封环612，所述上密封环611与下密封环612间隔设置而形成连通管体第一开口2b1和第二接头12的连通空间6a5。所述密封结构6包括有若干个设置在上密封环611与第一接头11之间且使二者密封连接的第一外凸筋6d1，所述密封结构6还包括有若干个设置在下密封环612与第三接头13之间且使二者密封连接的第二外凸筋6d2，所述第一外凸筋6d1与上密封环611为一体成型的整体结构，所述第二外凸筋6d2与下密封环612为一体成 型的整体结构。上密封环611位于管体第一开口2b1的上端，下密封环612位于管体第一开口2b1的下端，上密封环611和下密封环612间隔设置，二者之间的空隙能够连通管体第一开口2b1和第二接头12，本发明结构更加简单，组装更加方便可靠，密封防漏更加可靠。
在另一个实施例中，所述密封结构6包括有密封环61，所述第一连通结构3包括有开设在管体2的外管壁上且与第二通道2a2相通的管体第一开口2b1，所述第一连通结构3还包括有开设在密封环61的侧壁上且分别与管体第一开口2b1和第二接头12相连通的密封环第一开口6a1。密封环61的上端使管体2与第一接头11密封连接，密封环61的下端使管体2与第三接头13密封连接。在批量化生产时，通过挤出工艺批量化制造管体2，并且可以生产具有不同外径和不同通道数量的管体2，然后根据医用导管的需要裁减相应长度的管体2；同时可以批量化生产接头总成1，不同通道数量的管体2配套对应接头数量的接头总成1。由于接头总成1是统一生产的，第三接头13的规格不会改变，为了达到不同规格的管体2与统一规格的接头总成1之间密封连接，需要再单独批量化生产密封环61，密封环61的内径与管体2的外径匹配，密封环61的外径会比第三接头13和第一接头11的内径更大。在组装生产时，将管体第一开口2b1和密封环第一开口6a1对准后，密封环61的内环面与管体2的外管壁通过粘合剂密封连接，然后将密封环第一开口6a1和第二接头12对准后将密封环61装入接头总成1中，密封环61与接头总成1过盈配合而密封连接。
当管体2的通道数量和接头总成1的接头数量确定后，根据生产要 求，管体2的外径规格会不同，但是批量化生产的接头总成1的第三接头13的尺寸是不变的，此时只需生产与管体2规格匹配的密封环61即可，无需生产具有不同规格第三接头13的接头总成1，批量化生产相同规格的接头总成1所节约的成本要大于生产不同内径规格的密封环61所产生的成本，并且组装管体2、接头总成1和密封环61的组装成本要小于在管体2上注塑成型接头总成1的注塑成本。本发明的批量化生产成本更低，组装更加简单方便，标准化模式生产效率更高，组装后的医用导管质量稳定性高。
所述密封结构6包括有若干个设置在密封环61与第一接头11之间且使二者密封连接的第一外凸筋6d1，所述密封结构6还包括有若干个设置在密封环61与第三接头13之间且使二者密封连接的第二外凸筋6d2，所述密封环第一开口6a1位于第一外凸筋6d1与第二外凸筋6d2之间，所述第一外凸筋6d1或所述第二外凸筋6d2与密封环61为一体成型的整体结构。如图11、图12、图15、图20、图21所示，第一外凸筋6d1和第二外凸筋6d2为环形凸筋，环形凸筋也可以起到更好的密封效果，第一外凸筋6d1和第二外凸筋6d2分别与密封环61一体成型，密封环61和接头总成1二者过盈装配在一起后，第一外凸筋6d1和第二外凸筋6d2会顶压接头总成1的内壁，使得密封环61与接头总成1之间的连接更加紧密，密封性更好，接头总成1内各个接头内腔之间不会导通，结构更加简单，组装后的医用导管质量稳定性更高。
所述第一连通结构3包括有设置在密封环61的内环面上并且分别与密封环第一开口6a1和管体第一开口2b1相连通的第一内凹槽6c1。如 图10、图12、图14、图15、图19至图21所示，第一内凹槽6c1设置在密封环61的内环面上，第一内凹槽6c1可以为环绕在密封环61内环面的封闭环形凹槽或一段圆弧形的凹槽，第一内凹槽6c1也可以是围绕在密封第一环开口6a1四周的圆形凹槽，密封环第一开口6a1位于第一内凹槽6c1的槽底。将管体2的一端装入密封环61内时，由于密封环第一开口6a1或管体第一开口2b1比较小，可能会因位置偏差而使二者没有完全对准，从而造成密封环第一开口6a1和管体第一开口2b1之间的连通效果不理想。通过设置第一内凹槽6c1，即使管体2一端装入密封环61内有一定的位置偏差也不会影响密封环第一开口6a1和管体第一开口2b1之间的顺畅连通，结构更加简单，组装更加简单方便，生产效率更高，组装后的医用导管稳定性更强，成品合格率更高。
所述第一连通结构3包括有设置在密封环61的外环面上并且分别与第二接头12和密封环第一开口6a1相连通的第一外凹槽6b1。如图9至图12、图14、图15、图19至图21所示，第一外凹槽6b1设置在密封环61的外环面上，第一外凹槽6b1可以为环绕在密封环61外环面的封闭环形凹槽或一段圆弧形的凹槽，第一外凹槽6b1也可以是围绕在密封环第一开口6a1四周的圆形凹槽，密封环第一开口6a1位于第一外凹槽6b1的槽底。将密封环61装入接头总成1内时，由于密封环第一开口6a1较小，密封环第一开口6a1有时会因位置偏差而没有与第二接头12完全对准，从而造成密封环第一开口6a1与第二接头12之间的连通效果不理想。通过设置第一外凹槽6b1，即使密封环61装入接头总成1后有一定的位置偏差也不会影响密封环第一开口6a1与第二接头12之间的顺畅连 通，本发明结构更加简单，组装更加简单方便，生产效率更高，组装后的医用导管稳定性更强，成品合格率更高。
如图16所示，在本实施例中，所述密封结构6为粘合剂，所述粘合剂将管体2的外管壁与接头总成1的内壁密封粘贴在一起，所述第一连通结构3包括有开设在管体2的外管壁上且分别与第二通道2a2和第二接头12相连通的管体第一开口2b1。管体2的外管壁和第三接头13的内壁粘合密封连接，密封结构6为填充在管体2外管壁与接头总成1内壁之间的粘合剂，粘合剂使得管体2分别与第二接头12和第一接头11之间的连接更加密封和紧固，组装更加简单方便，生产效率更高。
所述管体2与第一接头11之间设有若干个使二者密封连接的第一外凸筋6d1，所述管体2与第三接头13之间设有若干个使二者密封连接的第二外凸筋6d2，所述管体第一开口2b1位于第一外凸筋6d1与第二外凸筋6d2之间。如图5和图16所示，所述第一外凸筋6d1和第二外凸筋6d2为环形凸筋，环形凸筋也可以起到更好的密封效果，第一外凸筋6d1和第二外凸筋6d2通过粘合剂分别粘贴在管体2上，管体2和接头总成1也通过粘合剂密封连接，第一外凸筋6d1和第二外凸筋6d2会顶压接头总成1，使得管体2与接头总成1之间的连接更加紧密，密封性更好，接头总成1内各个接头之间不会导通，结构更加简单，组装后的医用导管稳定性更强。
所述第一连通结构3包括有设置在管体2的外管壁上并且分别与第二接头12和管体第一开口2b1相连通的第一外凹槽6b1。如图16所示，第一外凹槽6b1设置在管体2的外管壁上，第一外凹槽6b1可以为环绕 在管体2外管壁的封闭环形凹槽或一段圆弧形的凹槽，第一外凹槽6b1也可以是围绕在管体第一开口2b1四周的圆形凹槽，第一管体开口2b1位于第一外凹槽6b1的槽底。将管体2与接头总成1通过粘合剂密封连接时，由于管体第一开口2b1较小，管体第一开口2b1有时会有位置偏差而没有与第二接头12完全对准，从而造成管体第一开口2b1与第二接头12之间的连通效果不理想。通过设置第一外凹槽6b1，即使管体2装入接头总成1后有一定的位置偏差也不会影响管体第一开口2b1与第二接头12之间的顺畅连通，本发明结构更加简单，组装更加简单方便，生产效率更高，组装后的医用导管稳定性更强。
所述限位结构18为第三接头13的端部向端口中心延伸收窄的限位部。如图4、图13至图15、图17至图22所示，第三接头13的端部向端口的中心延伸收窄形成限位部，在组装生产时先将密封环61和管体2的一端通过粘合剂密封连接，然后将管体2的另一端从第一接头11的端口进入接头总成1并且从第三接头13伸出来，用力拉扯管体2的另一端从而使密封环61与接头总成1过盈装配而密封连接，限位部能够很好的避免过度拉扯管体2时密封环61从第三接头13脱离出来，结构更加简单，组装更加方便，生产效率更高，组装后的医用导管密封效果和防脱落效果更好。
所述第二接口12的端口设有第一单向阀171。如图13至图15所示，第一单向阀171只允许气体或液体从第二接头12外部向内部流动，能够阻止气体或液体从第二接头12的端口外泄。由于第二接头12、第一连通结构3、第二通道2a2是依次连通的，将注射器插入第一单向阀171， 可以向第二接头12内注入液体，液体会到达充病人体内，也可以用注射器将病人体内的体液吸出来以便进行化验。
所述第二通道2a2远离接头总成1的一端设有用于封堵其通道口的第二封堵件52，所述管体2在管体第一开口2b1和第二封堵件52之间的外管壁上开设有与第二通道2a2相通的管体第五开口2b5，所述管体2的外管壁上密封连接有与管体第五开口2b5相通的第一球囊71。如图18所示，在本实施例中，第一球囊71位于管体2远离接头总成1的一端，第一球囊71具有弹性，第一球囊71未被充起时处于收缩状态，本实施例可作为导尿管，将管体2插入病人的尿管内，将注射器插入第一单向阀171，向第二接头12内注入无菌水，第一球囊71被充起后膨胀变大而将管体2固定在膀胱内，然后通过第一接头11和第一通道2a1可将病人体内的尿液引出体外。
所述管体2在管体第一开口2b1和第二封堵件52之间的外管壁上还开设有与第二通道2a2相通的管体第六开口2b6，所述管体2的外管壁上密封连接有与管体第六开口2b6相通的第二球囊72。如图22所示，在本实施例中，第二通道2a2均与第一球囊71和第二球囊72相连通，本实施例可以作为尿道压迫止血用的导管。
如图19所示，本实施例可作为治疗前列腺疾病的医用导管，所述第一通道2a1远离接头总成1的一端设有用于封堵其通道口的第二封堵件52，所述管体2在接头总成1和第二封堵件52之间的外管壁上开设有将第一通道2a1与外部环境相连通的管体第五开口2b5，所述管体2靠近第二封堵件52的一端密封连接有与第二通道2a2相通的第一球囊71。
如图20和图21所示，在本实施例中，所述管体2远离接头总成1的外管壁上密封连接有分别与第一通道2a1和第二通道2a2相通的第一球囊71，所述第一通道2a1上设有与管体2密封连接的密封圈53，所述密封圈53上设有供微型摄像头81穿过而到达第一球囊71内腔的内环开口54，微型摄像头81穿过内环开口54后密封圈53紧套在导线82上且导线82能相对密封圈53往复滑动。密封圈53可设置在第一通道2a1内的任意位置，密封圈53与管体2相对固定。导线82与微型摄像头81电性连接，导线82穿过内环开口54，导线82的直径大于内环开口54的直径，使得导线82与密封圈53保持密封配合。导线82也可以套设钢管后穿过内环开口54，钢管的直径大于内环开口54的直径，使得钢管与密封圈53保持密封配合。本实施例可作为子宫造影导管，在使用时，先将导线82和微型摄像头81插入密封圈53，并使微型摄像头81到达第一球囊71内，然后将管体2插入子宫内，向第一球囊71内充入透明的气体或液体使第一球囊71膨胀变大，充起的第一球囊71能够将管体2固定在子宫内，也方便微型摄像头81进行拍摄。
如图23至图25所示，所述接头总成1还包括有第四接头14，所述管体2上还开设有第三通道2a3，所述第三通道2a3伸入接头总成1的一端设有用于封堵其通道口的第三封堵件55，所述管体2的外管壁上开设有与第三通道2a3相通的管体第二开口2b2，所述密封环61的侧壁上开设有分别与管体第二开口2b2和第四接头14相连通的密封环第二开口6a2，所述密封环第二开口6a2位于第一外凸筋6d1与第二外凸筋6d2之间。所述密封环61的内环面上开设有分别与密封环第一开口6a1和管体 第一开口2b1相连通的第一内凹槽6c1，所述密封环61的外环面上开设有分别与第二接头12和密封环第一开口6a1相连通的第一外凹槽6b1，所述密封环61的内环面上开设有分别与密封环第二开口6a2和管体第二开口2b2相通的第二内凹槽6c2，所述密封环61的外环面上开设有分别与第四接头14和密封环第二开口6a2相通的第二外凹槽6b2，所述密封环61的内环面上设有若干个用于阻隔第一内凹槽6c1与第二内凹槽6c2的内阻隔部62，所述密封环61的外环面上还设有若干个用于阻隔第一外凹槽6b1与第二外凹槽6b2的外阻隔部63。在本实施例中，第一外凸筋6d1、第二外凸筋6d2、内阻隔部62、外阻隔部63和密封环61为一体成型的整体结构，内阻隔部62分布在第一内凹槽6c1与第二内凹槽6c2之间，外阻隔部63分布在第一外凹槽6b1与第二外凹槽6b2之间；接头总成1有四个接头，管体2有三个通道，密封环61有两个开口，接头总成1、管体2和密封环61三者密封组装在一起后，第一接头11与第一通道2a1相通形成第一组连通管路，第二接头12与第二通道2a2相通形成第二组连通管路，第四接头14与第三通道2a3相通形成第三组连通管路，各组的连通管路相互独立彼此不会干扰。
所述第二接口12的端口设有第一单向阀171，所述第二通道2a2远离接头总成1的一端设有用于封堵其通道口的第二封堵件52，所述管体2在管体第一开口2b1和第二封堵件52之间的外管壁上开设有与第二通道2a2相通的管体第五开口2b5，所述管体2的外管壁上密封连接有与管体第五开口2b5相通的第一球囊71。如图26所示，在本实施例中，第四接头14与第三通道2a3相通形成第三组连通管路可作为向病人体内 注射药物的管路，本实施例功能更加丰富，集成度更高。
如图27所示，本实施例可作为治疗前列腺疾病的医用球囊导管，所述管体2在管体第一开口2b1和第二封堵件52之间的外管壁上开设有与第二通道2a2相通的管体第六开口2b6，所述管体2的外管壁上还密封连接有与管体第六开口2b6相通的第二球囊72，所述第四接头14的端口设有第二单向阀172，所述第三通道2a3远离接头总成1的一端设有用于封堵其通道口的第八封堵件58，所述管体2在第一球囊71与第二球囊72之间的外管壁上开设有将第三通道2a3与外部环境相连通的管体第七开口2b7。第二通道2a2均与第一球囊71和第二球囊72相连通，将管体2插入病人尿道内，将注射器插入第一单向阀171，向第二接头12内注入无菌气体或液体，第一球囊71和第二球囊72被充起后膨胀变大而将管体2固定在尿道内，前列腺此时位于第一球囊71和第二球囊72之间，将另一个注射器插入第二单向阀172，向第四接头14内注入药物，药物会定向的到达前列腺，治疗更加精准高效。
如图28所示，本实施例可作为扩张子宫用的球囊导管，所述第四接口14的端口设有第二单向阀172，所述第三通道2a3远离接头总成1的一端设有用于封堵其通道口的第八封堵件58，所述管体2在管体第二开口2b2和第八封堵件58之间的外管壁上开设有与第三通道2a3相通的管体第六开口2b6，所述管体2的外管壁上密封连接有与管体第六开口2b6相通的第二球囊72。所述管体2还可以连接有用于封堵第一通道2a1的第九封堵件59。
如图29至图32所示，所述接头总成1还包括有第五接头15，所述 管体2上还开设有第四通道2a4，所述第四通道2a4伸入接头总成1的一端设有用于封堵其通道口的第四封堵件56，所述管体2的外管壁上开设有与第四通道2a4相通的管体第三开口2b3，所述密封环61的内环面上开设有与管体第三开口2b3相通的第三内凹槽6c3，所述密封环61的侧壁上开设有与第三内凹槽6c3相通的密封环第三开口6a3，所述密封环61的外环面上开设有分别与密封环第三开口6a3和第五接头15相通的第三外凹槽6b3，若干个所述内阻隔部62将第一内凹槽6c1、第二内凹槽6c2与第三内凹槽6c3三者相互分隔开，若干个所述外阻隔部63将第一外凹槽6b1、第二外凹槽6b2与第三外凹槽6b3三者相互分隔开，所述密封环第三开口6a3和第三外凹槽6b3分别位于第一外凸筋6d1与第二外凸筋6d2之间。内阻隔部62分别位于第一内凹槽6c1与第二内凹槽6c2之间、第二内凹槽6c2与第三内凹槽6c3之间、第三内凹槽6c3与第一内凹槽6c1之间，外阻隔部63分别位于第一外凹槽6b1与第二外凹槽6b2之间、第二外凹槽6b2与第三外凹槽6b3之间、第三外凹槽6b3与第一外凹槽6b1之间；接头总成1有五个接头，管体2有四个通道，密封环61有三个开口，第五接头15与第四通道2a4相通形成第四组连通管路，第四组连通管路与其他三组连通管路相互独立彼此不会干扰。
如图33至图36所示，所述接头总成1还包括有第六接头16，所述管体2上还开设有第五通道2a5，所述第五通道2a5伸入接头总成1的一端设有用于封堵其通道口的第五封堵件57，所述管体2的外管壁上开设有与第五通道2a5相通的管体第四开口2b4，所述密封环61的内环面上开设有与管体第四开口2b4相通的第四内凹槽6c4，所述密封环61的 侧壁上开设有与第四内凹槽6c4相通的密封环第四开口6a4，所述密封环61的外环面上开设有分别与密封环第四开口6a4和第六接头16相通的第四外凹槽6b4，若干个所述内阻隔部62将第一内凹槽6c1、第二内凹槽6c2、第三内凹槽6c3与第四内凹槽6c4四者相互分隔开，若干个所述外阻隔部63将第一外凹槽6b1、第二外凹槽6b2、第三外凹槽6b3与第四外凹槽6b4四者相互分隔开，所述密封环第四开口6a4和第四外凹槽6b4分别位于第一外凸筋6d1与第二外凸筋6d2之间。内阻隔部62分别位于第一内凹槽6c1与第二内凹槽6c2之间、第二内凹槽6c2与第三内凹槽6c3之间、第三内凹槽6c3与第四内凹槽6c4之间、第四内凹槽6c4与第一内凹槽6c1之间，外阻隔部63分别位于第一外凹槽6b1与第二外凹槽6b2之间、第二外凹槽6b2与第三外凹槽6b3之间、第三外凹槽6b3与第四外凹槽6b4之间、第四外凹槽6b4与第一外凹槽6b1之间；接头总成1有六个接头，管体2有五个通道，密封环61有四个开口，第六接头16与第五通道2a5相通形成第五组连通管路，第五组连通管路与其他四组连通管路相互独立彼此不会干扰。
所述接头总成1、管体2以及密封环61分别为PE、PP、PVC、PU、TPE、ABS等塑胶、橡胶或者硅胶，所述第一封堵件51、第二封堵件52、第三封堵件55、第四封堵件56、第五封堵件57、第八封堵件58分别为填充在各个通道端口的塑胶、橡胶或者乳胶。本发明在生产时生产工序简单，成品合格率高，能够大大的减少产品检验的工作量，很好的降低生产成本。

Claims (25)

  1. 一种医用导管，其特征在于：包括有接头总成(1)和管体(2)，所述接头总成(1)至少有三个接头，所述接头总成(1)包括有第一接头(11)、第二接头(12)和第三接头(13)，所述管体(2)的一端与第三接头(13)密封连接且部分伸入第一接头(11)内而与第一接头(11)密封连接，所述管体(2)上开设有与第一接头(11)相通的第一通道(2a1)，所述管体(2)上还开设有第二通道(2a2)，所述第二通道(2a2)与第二接头(12)之间设有使二者相通的第一连通结构(3)，所述第二通道(2a2)伸入接头总成(1)的一端设有用于封堵其通道口的第一封堵件(51)，所述接头总成(1)与管体(2)之间设有使二者密封连接且使接头总成(1)的多个接头内腔相互分隔开的密封结构(6)，所述接头总成(1)、管体(2)和密封结构(6)三者为分体结构，所述接头总成(1)是一体成型的整体结构，所述管体(2)是一体成型的整体结构。
  2. 根据权利要求1所述的一种医用导管，其特征在于：所述第三接头(13)的接口端部设有用于限制密封结构(6)脱离接头总成(1)的限位结构(18)。
  3. 根据权利要求1或2所述的一种医用导管，其特征在于：所述第一连通结构(3)包括有开设在管体(2)的外管壁上且与第二通道(2a2)相通的管体第一开口(2b1)，所述密封结构(6)包括有使管体(2)与第一接头(11)密封连接的上密封环(611)，所述密封结构(6)还包括有使管体(2)与第三接头(13)密封连接的下密封环(612)，所述上密封环(611)与下密封环(612)间隔设置而形成连通管体第一开口(2b1)和第二接头(12)的连通空间(6a5)。
  4. 根据权利要求3所述的一种医用导管，其特征在于：所述密封结构(6)包括有若干个设置在上密封环(611)与第一接头(11)之间且使二者密封连接的第一外凸筋(6d1)，所述密封结构(6)还包括有若干个设置在下密封环(612)与第三接头(13)之间且使二者密封连接的第二外凸筋(6d2)，所述第一外凸筋(6d1)与上密封环(611)为一体成型的整体结构，所述第二外凸筋(6d2)与下密封环(612)为一体成型的整体结构。
  5. 根据权利要求1或2所述的一种医用导管，其特征在于：所述密封结构(6)包括有密封环(61)，所述第一连通结构(3)包括有开设在管体(2)的外管壁上且与第二通道(2a2)相通的管体第一开口(2b1)，所述第一连通结构(3)还包括有开设在密封环(61)的侧壁上且分别与管体第一开口(2b1)和第二接头(12)相连通的密封环第一开口(6a1)。
  6. 根据权利要求5所述的一种医用导管，其特征在于：所述密封结构(6)包括有若干个设置在密封环(61)与第一接头(11)之间且使二者密封连接的第一外凸筋(6d1)，所述密封结构(6)还包括有若干个设置在密封环(61)与第三接头(13)之间且使二者密封连接的第二外凸筋(6d2)，所述密封环第一开口(6a1)位于第一外凸筋(6d1)与第二外凸筋(6d2)之间，所述第一外凸筋(6d1)或所述第二外凸筋(6d2)与密封环(61)为一体成型的整体结构。
  7. 根据权利要求5所述的一种医用导管，其特征在于：所述第一连通结构(3)包括有设置在密封环(61)的内环面上并且分别与密封环第一开口(6a1)和管体第一开口(2b1)相连通的第一内凹槽(6c1)。
  8. 根据权利要求5所述的一种医用导管，其特征在于：所述第一连通 结构(3)包括有设置在密封环(61)的外环面上并且分别与第二接头(12)和密封环第一开口(6a1)相连通的第一外凹槽(6b1)。
  9. 根据权利要求1或2所述的一种医用导管，其特征在于：所述密封结构(6)为粘合剂，所述粘合剂将管体(2)的外管壁与接头总成(1)的内壁密封粘贴在一起，所述第一连通结构(3)包括有开设在管体(2)的外管壁上且分别与第二通道(2a2)和第二接头(12)相连通的管体第一开口(2b1)。
  10. 根据权利要求9所述的一种医用导管，其特征在于：所述管体(2)与第一接头(11)之间设有若干个使二者密封连接的第一外凸筋(6d1)，所述管体(2)与第三接头(13)之间设有若干个使二者密封连接的第二外凸筋(6d2)，所述管体第一开口(2b1)位于第一外凸筋(6d1)与第二外凸筋(6d2)之间。
  11. 根据权利要求9所述的一种医用导管，其特征在于：所述第一连通结构(3)包括有设置在管体(2)的外管壁上并且分别与第二接头(12)和管体第一开口(2b1)相连通的第一外凹槽(6b1)。
  12. 根据权利要求2所述的一种医用导管，其特征在于：所述限位结构(18)为第三接头(13)的端部向端口中心延伸收窄的限位部。
  13. 根据权利要求1或2所述的一种医用导管，其特征在于：所述第二接口(12)的端口设有第一单向阀(171)。
  14. 根据权利要求13所述的一种医用导管，其特征在于：所述第二通道(2a2)远离接头总成(1)的一端设有用于封堵其通道口的第二封堵件(52)，所述管体(2)在管体第一开口(2b1)和第二封堵件(52)之间的 外管壁上开设有与第二通道(2a2)相通的管体第五开口(2b5)，所述管体(2)的外管壁上密封连接有与管体第五开口(2b5)相通的第一球囊(71)。
  15. 根据权利要求14所述的一种医用导管，其特征在于：所述管体(2)在管体第一开口(2b1)和第二封堵件(52)之间的外管壁上还开设有与第二通道(2a2)相通的管体第六开口(2b6)，所述管体(2)的外管壁上密封连接有与管体第六开口(2b6)相通的第二球囊(72)。
  16. 根据权利要求13所述的一种医用导管，其特征在于：所述第一通道(2a1)远离接头总成(1)的一端设有用于封堵其通道口的第二封堵件(52)，所述管体(2)在接头总成(1)和第二封堵件(52)之间的外管壁上开设有将第一通道(2a1)与外部环境相连通的管体第五开口(2b5)，所述管体(2)靠近第二封堵件(52)的一端密封连接有与第二通道(2a2)相通的第一球囊(71)。
  17. 根据权利要求13所述的一种医用导管，其特征在于：所述管体(2)远离接头总成(1)的外管壁上密封连接有分别与第一通道(2a1)和第二通道(2a2)相通的第一球囊(71)，所述第一通道(2a1)上设有与管体(2)密封连接的密封圈(53)，所述密封圈(53)上设有供微型摄像头(81)穿过而到达第一球囊(71)内腔的内环开口(54)，微型摄像头(81)穿过内环开口(54)后密封圈(53)紧套在导线(82)上且导线(82)能相对密封圈(53)往复滑动。
  18. 根据权利要求6所述的一种医用导管，其特征在于：所述接头总成(1)还包括有第四接头(14)，所述管体(2)上还开设有第三通道(2a3)，所述第三通道(2a3)伸入接头总成(1)的一端设有用于封堵其通道口的 第三封堵件(55)，所述管体(2)的外管壁上开设有与第三通道(2a3)相通的管体第二开口(2b2)，所述密封环(61)的侧壁上开设有分别与管体第二开口(2b2)和第四接头(14)相连通的密封环第二开口(6a2)，所述密封环第二开口(6a2)位于第一外凸筋(6d1)与第二外凸筋(6d2)之间。
  19. 根据权利要求18所述的一种医用导管，其特征在于：所述密封环(61)的内环面上开设有分别与密封环第一开口(6a1)和管体第一开口(2b1)相连通的第一内凹槽(6c1)，所述密封环(61)的外环面上开设有分别与第二接头(12)和密封环第一开口(6a1)相连通的第一外凹槽(6b1)，所述密封环(61)的内环面上开设有分别与密封环第二开口(6a2)和管体第二开口(2b2)相通的第二内凹槽(6c2)，所述密封环(61)的外环面上开设有分别与第四接头(14)和密封环第二开口(6a2)相通的第二外凹槽(6b2)，所述密封环(61)的内环面上设有若干个用于阻隔第一内凹槽(6c1)与第二内凹槽(6c2)的内阻隔部(62)，所述密封环(61)的外环面上还设有若干个用于阻隔第一外凹槽(6b1)与第二外凹槽(6b2)的外阻隔部(63)。
  20. 根据权利要求18所述的一种医用导管，其特征在于：所述第二接口(12)的端口设有第一单向阀(171)，所述第二通道(2a2)远离接头总成(1)的一端设有用于封堵其通道口的第二封堵件(52)，所述管体(2)在管体第一开口(2b1)和第二封堵件(52)之间的外管壁上开设有与第二通道(2a2)相通的管体第五开口(2b5)，所述管体(2)的外管壁上密封连接有与管体第五开口(2b5)相通的第一球囊(71)。
  21. 根据权利要求20所述的一种医用导管，其特征在于：所述管体(2) 在管体第一开口(2b1)和第二封堵件(52)之间的外管壁上开设有与第二通道(2a2)相通的管体第六开口(2b6)，所述管体(2)的外管壁上还密封连接有与管体第六开口(2b6)相通的第二球囊(72)，所述第四接头(14)的端口设有第二单向阀(172)，所述第三通道(2a3)远离接头总成(1)的一端设有用于封堵其通道口的第八封堵件(58)，所述管体(2)在第一球囊(71)与第二球囊(72)之间的外管壁上开设有将第三通道(2a3)与外部环境相连通的管体第七开口(2b7)。
  22. 根据权利要求20所述的一种医用导管，其特征在于：所述第四接口(14)的端口设有第二单向阀(172)，所述第三通道(2a3)远离接头总成(1)的一端设有用于封堵其通道口的第八封堵件(58)，所述管体(2)在管体第二开口(2b2)和第八封堵件(58)之间的外管壁上开设有与第三通道(2a3)相通的管体第六开口(2b6)，所述管体(2)的外管壁上密封连接有与管体第六开口(2b6)相通的第二球囊(72)。
  23. 根据权利要求22所述的一种医用导管，其特征在于：所述管体(2)连接有用于封堵第一通道(2a1)的第九封堵件(59)。
  24. 根据权利要求19所述的一种医用导管，其特征在于：所述接头总成(1)还包括有第五接头(15)，所述管体(2)上还开设有第四通道(2a4)，所述第四通道(2a4)伸入接头总成(1)的一端设有用于封堵其通道口的第四封堵件(56)，所述管体(2)的外管壁上开设有与第四通道(2a4)相通的管体第三开口(2b3)，所述密封环(61)的内环面上开设有与管体第三开口(2b3)相通的第三内凹槽(6c3)，所述密封环(61)的侧壁上开设有与第三内凹槽(6c3)相通的密封环第三开口(6a3)，所述密封环(61) 的外环面上开设有分别与密封环第三开口(6a3)和第五接头(15)相通的第三外凹槽(6b3)，若干个所述内阻隔部(62)将第一内凹槽(6c1)、第二内凹槽(6c2)与第三内凹槽(6c3)三者相互分隔开，若干个所述外阻隔部(63)将第一外凹槽(6b1)、第二外凹槽(6b2)与第三外凹槽(6b3)三者相互分隔开，所述密封环第三开口(6a3)和第三外凹槽(6b3)分别位于第一外凸筋(6d1)与第二外凸筋(6d2)之间。
  25. 根据权利要求24所述的一种医用导管，其特征在于：所述接头总成(1)还包括有第六接头(16)，所述管体(2)上还开设有第五通道(2a5)，所述第五通道(2a5)伸入接头总成(1)的一端设有用于封堵其通道口的第五封堵件(57)，所述管体(2)的外管壁上开设有与第五通道(2a5)相通的管体第四开口(2b4)，所述密封环(61)的内环面上开设有与管体第四开口(2b4)相通的第四内凹槽(6c4)，所述密封环(61)的侧壁上开设有与第四内凹槽(6c4)相通的密封环第四开口(6a4)，所述密封环(61)的外环面上开设有分别与密封环第四开口(6a4)和第六接头(16)相通的第四外凹槽(6b4)，若干个所述内阻隔部(62)将第一内凹槽(6c1)、第二内凹槽(6c2)、第三内凹槽(6c3)与第四内凹槽(6c4)四者相互分隔开，若干个所述外阻隔部(63)将第一外凹槽(6b1)、第二外凹槽(6b2)、第三外凹槽(6b3)与第四外凹槽(6b4)四者相互分隔开，所述密封环第四开口(6a4)和第四外凹槽(6b4)分别位于第一外凸筋(6d1)与第二外凸筋(6d2)之间。
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