CN111135431B - Balloon catheter for anchoring guide wire and connector assembly - Google Patents
Balloon catheter for anchoring guide wire and connector assemblyDownload PDFInfo
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- CN111135431B CN111135431BCN202010053778.4ACN202010053778ACN111135431BCN 111135431 BCN111135431 BCN 111135431BCN 202010053778 ACN202010053778 ACN 202010053778ACN 111135431 BCN111135431 BCN 111135431B
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- 238000002560therapeutic procedureMethods0.000description2
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- 230000000747cardiac effectEffects0.000description1
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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
- A61M25/10—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
- A61M25/0021—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
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- 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
- A61M25/1025—Connections between catheter tubes and inflation 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
- A61M25/00—Catheters; Hollow probes
- A61M2025/0008—Catheters; Hollow probes having visible markings on its surface, i.e. visible to the naked eye, for any purpose, e.g. insertion depth markers, rotational markers or identification of type
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Pulmonology (AREA)
- Biophysics (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
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a balloon catheter and a connector assembly for anchoring a guide wire.
Background
PCI therapy (percutaneous coronary intervention) is a treatment method for improving myocardial blood perfusion by dredging the narrow or even occluded coronary artery lumen through a cardiac catheter technique, and has the advantages of short treatment course, small wound, remarkable curative effect and the like, so that the PCI therapy is more and more widely applied.
In the existing PCI treatment operation, an instrument needs to reach a target lesion position along with a guide wire, and the most key operation is to push the guide wire to pass through the lesion position and establish a track for a subsequent instrument to enter the lesion position. Often the time it takes for the guide wire to reach the target location is long and it is undesirable for the guide wire to exit from the target location for subsequent exchange of instruments. If the guide wire exits the target position in the process, the guide wire needs to be operated to reach the target position again, and the operation time is prolonged. The requirements on the operation are higher, and the safety of the patient is greatly influenced. For example, when the location of a severe lesion is distal to a blood vessel, it is difficult for the guidewire to reach the target location, and a microcatheter is used. Clinically, it is usually necessary to insert a microcatheter inside the guiding catheter to the affected area. The PTCA guide wire increases the success rate of the guide wire passing through a lesion area by the aid of auxiliary supporting force of the microcatheter, after the microcatheter is used, the PTCA guide wire must be kept in the lesion area, the microcatheter needs to be withdrawn, and then a subsequent therapeutic device is conveyed to the lesion area. When the microcatheter is withdrawn, the guide wire is easily taken out of the lesion position due to the friction force or the drawing acting force of the inner cavity of the catheter, so that the guide wire fails to be threaded. Currently, there are two clinical methods, one is to adopt a saline reverse-direction punching technology or an extended guide wire technology to prevent the PTCA guide wire from being taken out during the retraction of the microcatheter, but the saline reverse-direction punching technology may cause saline to quickly flush into the coronary artery, resulting in the risk of causing the dissection or the laceration of the blood vessel; the extended guide wire technology requires a higher operation level, the PTCA guide wire may move or even exit a lesion area when in use, and meanwhile, long-time X-ray exposure is required, so that the health of an operator is greatly influenced. The other method is to use a small-sized balloon dilatation catheter to deliver the small-sized balloon dilatation catheter into the guide catheter, expand the balloon catheter, and press the guide wire on the inner wall of the guide catheter through balloon dilatation to prevent the guide wire from moving. The method needs to extend the guide wire when in use, and the operation is complicated.
In the existing withdrawal mode of the microcatheter, a small saccule is commonly used for pressing a guide wire on the inner wall of a guide catheter. Among them, patent CN 107398004a discloses a tube withdrawal device according to clinical application method. The principle is that the balloon expands to extrude the guide wire on the inner wall of the guide catheter, so that the guide wire is prevented from sliding. The invention uses the inner tube to automatically hold the guide wire under the action of pressure after the saccule is expanded, and the saccule is jointed with the vessel wall or the inner wall of the guide catheter, thereby preventing the guide wire from sliding.
Currently, there are two clinical methods, one is to adopt a saline reverse-direction punching technology or an extended guide wire technology to prevent the PTCA guide wire from being taken out during the retraction of the microcatheter, but the saline reverse-direction punching technology may cause saline to quickly flush into the coronary artery, resulting in the risk of causing the dissection or the laceration of the blood vessel; the extended guide wire technology requires a higher operation level, the PTCA guide wire may move or even exit a lesion area when in use, and meanwhile, long-time X-ray exposure is required, so that the health of an operator is greatly influenced. The other method is to use a small-sized balloon dilatation catheter to deliver the small-sized balloon dilatation catheter into the guide catheter, expand the balloon catheter, and press the guide wire on the inner wall of the guide catheter through balloon dilatation to prevent the guide wire from moving. The method needs to extend the guide wire when in use, and the operation is complicated.
Disclosure of Invention
The invention aims to provide a balloon catheter and a connector assembly for anchoring a guide wire.
In order to solve the technical problem, the invention provides a balloon catheter for anchoring a guide wire, which comprises an outer tube, an inner tube arranged in the outer tube and a balloon, wherein the distal end of the outer tube is connected with the proximal end of the balloon, the distal end of the balloon is hermetically connected with the inner tube, a channel for liquid to pass is formed between the outer tube and the inner tube,
the outer tube comprises a far-end outer tube part and a near-end outer tube part,
the inner tube comprises a far-end inner tube part and a near-end inner tube part,
the balloon catheter also includes a connector assembly,
the connector assembly comprises a distal connector, a proximal connector and a sleeve which can be mutually detached,
the distal end connector comprises a distal end connector outer tube, a distal end self-locking device inner tube arranged in the distal end connector outer tube, and a distal end self-locking ring sleeved outside the distal end self-locking device inner tube, wherein the distal end of the distal end self-locking ring is connected to the distal end connector outer tube, the distal end of the distal end connector outer tube is butted with the proximal end of the distal end outer tube part, the distal end of the distal end self-locking device inner tube is butted with the proximal end of the distal end inner tube part,
the proximal connector comprises a proximal connector outer tube, a proximal end expander inner tube arranged in the proximal connector outer tube and a proximal end expander, wherein the proximal end expander is connected to the proximal end expander on the proximal connector outer tube, the proximal end of the proximal connector outer tube is butted with the distal end of the proximal end outer tube part, the proximal end of the proximal end expander inner tube is butted with the distal end of the proximal end inner tube part,
the proximal end of the distal connector is inserted into the distal end of the cannula, the distal end of the proximal connector is inserted into the proximal end of the cannula,
the balloon catheter has a butt joint state and a separation state,
when the balloon catheter is in a separated state, the distal connector is separated from the proximal connector, the distal self-locking ring is tightly held on the outer wall of the inner tube of the distal self-locking device to block a passage between the outer tube of the distal connector and the inner tube of the distal self-locking device,
when the balloon catheter is in a butt joint state, the distal end of the proximal end dilator is inserted into the distal end self-locking ring to open the proximal end of the distal end self-locking ring, so that an filling channel for liquid to pass through is formed between the distal end self-locking ring and the inner tube of the distal end self-locking device.
Preferably, the distal end connector outer tube and the distal end self-locking device inner tube are fixedly connected through a plurality of first connecting ribs, and the proximal end connector outer tube and the proximal end compass period inner tube are fixedly connected through a plurality of second connecting ribs.
Preferably, the distal end of the distal end self-locking ring is fixedly connected with the proximal end of the distal end connector outer tube, the proximal end of the distal end self-locking ring is provided with a flared portion flaring towards the distal direction, the distal end of the flared portion is tightly held on the outer wall of the distal end self-locking device inner tube, and a gap for inserting the distal end of the proximal end dilator is formed between the proximal end of the flared portion and the distal end self-locking device inner tube.
Preferably, the proximal end of the distal self-locking ring is provided with a plurality of expansion slits, and when the proximal end expander is inserted into the proximal end of the distal self-locking ring, the proximal end of the distal self-locking ring expands along the expansion slits.
Preferably, the inner wall of the proximal end of the distal self-locking ring is further provided with a self-locking sealing ring, and when the balloon catheter is in a separated state, the proximal end of the distal self-locking ring and the inner tube of the distal self-locking device are sealed through the self-locking sealing ring.
Preferably, the distal end self-locking device inner tube and the distal end inner tube part, the proximal end expander inner tube and the proximal end inner tube part, the distal end connector outer tube and the distal end outer tube part, and the proximal end connector outer tube and the proximal end outer tube part are connected in a welding or adhesive mode.
Preferably, the far end of the balloon is provided with a catheter tip, the catheter tip is connected with the far end of the inner tube, and the inner tube part in the balloon is also provided with a mark developing ring.
Preferably, the sacculus pipe still include a pipe seat, the pipe seat install the near-end of outer tube and inner tube, the pipe seat include sacculus filling mouth, wire chamber road junction, outer tube and inner tube between the passageway with sacculus filling mouth be linked together, the inner tube with wire chamber road junction be linked together.
The invention also provides a connector assembly, which comprises a distal connector, a proximal connector and a sleeve which can be mutually detached,
the distal connector comprises a distal connector outer tube, a distal self-locking device inner tube arranged in the distal connector outer tube, and a distal self-locking ring sleeved outside the distal self-locking device inner tube, wherein the distal end of the distal self-locking ring is connected to the distal connector outer tube,
the proximal connector comprises a proximal connector outer tube, a proximal end expander inner tube arranged in the proximal connector outer tube, and a proximal end expander with a proximal end connected to the proximal connector outer tube,
the proximal end of the distal connector is inserted into the distal end of the cannula, the distal end of the proximal connector is inserted into the proximal end of the cannula,
the connector assembly has a mating state and a separating state,
when the connector assembly is in a separated state, the distal connector is separated from the proximal connector, the distal self-locking ring is tightly held on the outer wall of the inner tube of the distal self-locking device to block a passage between the outer tube of the distal connector and the inner tube of the distal self-locking device,
when the connector assembly is in a butt joint state, the distal end of the proximal end expander is inserted into the distal end self-locking ring to expand the proximal end of the distal end self-locking ring, so that an filling channel for liquid to pass through is formed between the distal end self-locking ring and the inner tube of the distal end self-locking device.
Preferably, the outer tube of the distal connector is fixedly connected with the inner tube of the distal self-locking device through a plurality of first connecting ribs, the outer tube of the proximal connector is fixedly connected with the inner tube of the proximal compass period through a plurality of second connecting ribs,
the far end of the far-end self-locking ring is fixedly connected with the near end of the far-end connector outer tube, the near end of the far-end self-locking ring is provided with a trumpet portion which is opened towards the far end direction, the far end of the trumpet portion is tightly held on the outer wall of the far-end self-locking device inner tube, and a gap for inserting the far end of the near-end dilator is formed between the near end of the trumpet portion and the far-end self-locking device inner tube,
the proximal end of the distal self-locking ring is provided with a plurality of expansion seams, and when the proximal end expander is inserted into the proximal end of the distal self-locking ring, the proximal end of the distal self-locking ring is expanded along the expansion seams.
When in butt joint state, the inner pipe of the distal connector is tightly connected with the inner pipe of the proximal connector, and no leakage exists at the butt joint.
The balloon catheter and the connector assembly for anchoring the guide wire can anchor the guide wire at a target position, solve the problem that the guide wire is displaced, slides or is withdrawn in the instrument exchange process, and realize safe and rapid exchange of instruments.
Drawings
FIG. 1 is a schematic view of the construction of a balloon catheter of the present invention;
FIG. 2 is a schematic view of a portion of the construction of the balloon catheter of the present invention;
FIG. 3 is a schematic view of the tube withdrawal device of the present invention in a disengaged configuration;
FIG. 4 is a schematic view of the tube withdrawing device of the present invention after butt joint;
FIG. 5 is an enlarged view of a portion of FIG. 4;
FIG. 6 is a schematic view of the structure of the tube withdrawal device of the present invention after the proximal dilator has been detached from the quick release connector;
FIG. 7 is a schematic cross-sectional view A-A' of FIG. 4;
fig. 8 is a schematic sectional view of B-B' in fig. 3.
Wherein: 1 is the pipe pointed end, 2 is the sacculus, 3 is the inner tube, 4 is the outer tube, 5 is the connector subassembly, 6 is the sacculus filling mouth, 7 is the sacculus filling port, 8 is seal wire passageway pipe seat, 9 is seal wire chamber road junction, 10 is the pipe seat, 11 is distal end self-locking ring, 12 is the near-end expander, 13 is distal end self-locking ware inner tube, 14 is near-end expander inner tube, 15 is filling the passageway, 16 is for guiding pipe or vascular wall, 17 is the seal wire, 18 is the expansion seam, 19 is the auto-lock sealing ring, 20 is first connecting rib, 21 is the second connecting rib, 22 is mark development ring, 23 is the distal connector, 24 is the proximal connector, 25 is the pipe or the apparatus that need withdraw from.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present application.
As shown in fig. 1, the present invention provides a balloon catheter for anchoring a guide wire, the balloon catheter comprises an outer tube 4, an inner tube 3 disposed in the outer tube 4, and aballoon 2, a distal end of the outer tube 4 is connected to a proximal end of theballoon 2, a distal end of theballoon 2 is hermetically connected to the inner tube 3, a channel for passing liquid is formed between the outer tube 4 and the inner tube 3, the outer tube 4 comprises a distal outer tube portion and a proximal outer tube portion, and the inner tube 3 comprises a distal inner tube portion and a proximal inner tube portion. The far end of thesacculus 2 is provided with a catheter tip 1, the catheter tip 1 is connected with the far end of the inner pipe 3, and the inner pipe part in thesacculus 2 is also provided with amark developing ring 22. The sacculus pipe still include apipe seat 10,pipe seat 10 install the near-end of outer tube 4 and inner tube 3,pipe seat 10 include that the sacculus is full of mouthful 6, silk guide wire chamber road junction 9, outer tube 4 and inner tube 3 between the passageway with the sacculus fill with mouthful 6 and be linked together, inner tube 3 with silk guide wire chamber road junction 9 be linked together. The outer tube 4 is connected with theballoon 2 by adopting a welding process. The catheter tip 1 is connected with theballoon 2 and the inner tube 3 in a welding or gluing mode. Themark development ring 22 is press-fitted on the inner tube 3.
As shown in fig. 3 and 4, the balloon catheter further comprises a connector assembly 5, the connector assembly 5 comprises a distal connector 23, a proximal connector 24 and a sleeve which are mutually detachable, the distal connector 23 comprises a distal connector outer tube, a distal self-locking device inner tube 13 arranged in the distal connector outer tube, a distal self-locking ring 11 sleeved outside the distal self-locking device inner tube 13, the distal end of the distal self-locking ring 11 is connected to the distal connector outer tube, the distal end of the distal connector outer tube is connected to the proximal end of the distal outer tube, the distal end of the distal self-locking device inner tube 13 is connected to the proximal end of the distal inner tube, the proximal connector 24 comprises a proximal connector outer tube, a proximal expander inner tube 14 arranged in the proximal connector outer tube, and a proximal expander 12 connected to the proximal connector outer tube, the proximal end of the outer tube of the proximal connector abuts against the distal end of the outer tube portion of the proximal end, the proximal end of the inner tube 14 of the proximal dilator abuts against the distal end of the inner tube portion of the proximal end, the proximal end of the distal connector 23 is inserted into the distal end of the cannula, and the distal end of the proximal connector 24 is inserted into the proximal end of the cannula.
As shown in fig. 3, when the balloon catheter is in the detached state, thedistal connector 23 is separated from theproximal connector 24, and the distal self-lockingring 11 is tightly held on the outer wall of the distal self-locking deviceinner tube 13 to block the passage between the distal connector outer tube and the distal self-locking deviceinner tube 13. As shown in fig. 4, when the balloon catheter is in the abutting state, the distal end of theproximal dilator 12 is inserted into the distal self-lockingring 11 to expand the proximal end of the distal self-lockingring 11, so that aninflation channel 15 for liquid to pass through is formed between the distal self-lockingring 11 and theinner tube 13 of the distal self-locking device.
As shown in fig. 7 and 8, the outer tube of the distal connector is fixedly connected with theinner tube 13 of the distal self-locking device by a plurality of first connectingribs 20, and the outer tube of the proximal connector is fixedly connected with the inner tube of the proximal compass period by a plurality of second connectingribs 21.
As shown in fig. 5, the distal end of the distal self-lockingring 11 is fixedly connected to the proximal end of the outer tube of the distal connector, the proximal end of the distal self-lockingring 11 has a flared portion which is flared in the distal direction, the distal end of the flared portion is held tightly on the outer wall of theinner tube 13 of the distal self-locking device, and a gap for inserting the distal end of theproximal dilator 12 is formed between the proximal end of the flared portion and theinner tube 13 of the distal self-locking device.
As shown in fig. 7, the proximal end of the distal self-lockingring 11 is provided with a plurality of expansion slits 18, and when theproximal end expander 12 is inserted into the proximal end of the distal self-lockingring 11, the proximal end of the distal self-lockingring 11 expands along the expansion slits 18. The inner wall of the near end of the far-end self-lockingring 11 is also provided with a self-lockingsealing ring 19, and when the balloon catheter is in a separated state, the near end of the far-end self-lockingring 11 and the far-end self-locking deviceinner tube 13 are sealed through the self-lockingsealing ring 19.
The far-end self-locking device is characterized in that the far-end self-locking device is arranged between theinner tube 13 and the inner tube part of the far-end self-locking device, theinner tube 14 of the near-end dilator is arranged between the inner tube part of the near-end dilator, the outer tube part of the far-end connector is arranged between the outer tube part of the far-end dilator and the outer tube part of the near-end dilator, and the outer tube part of the.
The inner tube 3 of sacculus pipe is elastic material, and the sacculus is full of the in-process, and inner tube 3 pressurized is inwards out of shape, tightly embracesseal wire 17, as shown in fig. 2, and the sacculus is compliance sacculus, and full back, sacculus and blood vessel or guide the pipe inner wall and closely laminate, and the sacculus can prevent that the sacculus from removing with the vascular wall or guide the frictional force effect between the pipe wall to guarantee thatseal wire 17 does not slide.
The catheter tip 1 facilitates the passage of the balloon, and themarker developing ring 22 facilitates the development of the marker position of the balloon catheter in the human body.
In the unconnected state of theconnector assembly 5, the distal self-lockingring 11 is tightly held against the distal self-locking ringinner tube 13, theproximal dilator 12 is separated from the distal self-lockingring 11, and the proximal dilatorinner tube 14 is separated from the distal self-locking ringinner tube 13, as shown in fig. 3.
When thequick connector assembly 5 is in the connection state, theproximal end expander 12 is connected with the distal end self-lockingring 11, and the distal end self-lockingring 11 is expanded under the action of theproximal end expander 12, and theinner tube 14 is butted with the distal end self-locking deviceinner tube 13, as shown in a schematic view 4, so as to form a sealed quick connector filling channel 15 (as shown in a schematic view 5).
When the sacculus is full, the sufficient port 7 of sacculus is connected with external sufficient device, and sufficient liquid reaches 2 inner chambers of sacculus through sufficient mouth 6 of sacculus, thesufficient passageway 15 of inner tube and outer tube clearance, quick detach connector. After filling, theproximal dilator 12 is quickly detached, i.e. theproximal dilator 12 is separated from the distal connector, as shown in fig. 6, and the distal self-lockingring 11 is restored to the state of locking theinner tube 13 of the distal self-locking ring, thereby ensuring the balloon to be in the filling state.
The inner wall of the distal end self-lockingring 11 is attached to a self-lockingsealing ring 19, as shown in fig. 7, the self-lockingsealing ring 19 is made of elastic material, and a good sealing effect can be guaranteed. The material of the distal self-lockingring 11 is a material with good memory and mechanical properties. Theinner tube 13 of the distal end self-locking device is integrated with thedistal end connector 23 through the first connectingrib 20. The proximal dilatorinner tube 14 is integrated with theproximal connector 24 by thesecond connector rib 21, as schematically shown in fig. 8. The connection of thedistal connector 23 and theproximal connector 24 with thequick release connector 5 is a sealing connection. When the exchange of the instrument is finished, the quick-release connector 5 is connected with theproximal connector 24, the balloon is decompressed, and the whole catheter is withdrawn.
The balloon catheter of the invention comprises the following steps: connecting thedistal connector 23 and theproximal connector 24, allowing the proximal end of theguide wire 17 to penetrate from the catheter tip 1, allowing theballoon 2 to reach the distal end of a catheter orinstrument 25 to be withdrawn under X-ray, allowing the balloon filling port 7 to be connected with an external filling device, allowing filling liquid to reach the inner cavity of theballoon 2 through the balloon filling port 6, the gap between the inner tube and the outer tube and the fillingchannel 15 of the quick-release connector, allowing theproximal connector 24 to be quickly detached from thedistal connector 5 after the balloon is filled, and withdrawing thecatheter seat 10 and the connecting part of theproximal connector 24; the instrument to be exchanged is then withdrawn, theproximal connector 24 and thequick release connector 5 are then connected, the balloon is deflated and the entire catheter is withdrawn.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego the subject matter and should not be construed as an admission that the applicant does not consider such subject matter to be part of the disclosed subject matter.
Claims (10)
1. A balloon catheter for anchoring a guide wire is characterized by comprising an outer tube, an inner tube arranged in the outer tube and a balloon, wherein the far end of the outer tube is connected with the near end of the balloon, the far end of the balloon is hermetically connected with the inner tube, a channel for liquid to pass is formed between the outer tube and the inner tube,
the outer tube comprises a far-end outer tube part and a near-end outer tube part,
the inner tube comprises a far-end inner tube part and a near-end inner tube part,
the balloon catheter also includes a connector assembly,
the connector assembly comprises a distal connector, a proximal connector and a sleeve which can be mutually detached,
the distal end connector comprises a distal end connector outer tube, a distal end self-locking device inner tube arranged in the distal end connector outer tube, and a distal end self-locking ring sleeved outside the distal end self-locking device inner tube, wherein the distal end of the distal end self-locking ring is connected to the distal end connector outer tube, the distal end of the distal end connector outer tube is butted with the proximal end of the distal end outer tube part, the distal end of the distal end self-locking device inner tube is butted with the proximal end of the distal end inner tube part,
the proximal connector comprises a proximal connector outer tube, a proximal end expander inner tube arranged in the proximal connector outer tube and a proximal end expander, wherein the proximal end expander is connected to the proximal end expander on the proximal connector outer tube, the proximal end of the proximal connector outer tube is butted with the distal end of the proximal end outer tube part, the proximal end of the proximal end expander inner tube is butted with the distal end of the proximal end inner tube part,
the proximal end of the distal connector is inserted into the distal end of the cannula, the distal end of the proximal connector is inserted into the proximal end of the cannula,
the balloon catheter has a butt joint state and a separation state,
when the balloon catheter is in a separated state, the distal connector is separated from the proximal connector, the distal self-locking ring is tightly held on the outer wall of the inner tube of the distal self-locking device to block a passage between the outer tube of the distal connector and the inner tube of the distal self-locking device,
when the balloon catheter is in a butt joint state, the distal end of the proximal end dilator is inserted into the distal end self-locking ring to open the proximal end of the distal end self-locking ring, so that an filling channel for liquid to pass through is formed between the distal end self-locking ring and the inner tube of the distal end self-locking device,
the inner tube of the sacculus pipe be elastic material, during the sacculus filling process, the inner tube can be pressed and inwards deformed to embrace the seal wire.
2. The balloon catheter of claim 1, wherein the outer distal connector tube is fixedly connected to the inner distal self-locker tube by a plurality of first connecting ribs, and the outer proximal connector tube is fixedly connected to the inner proximal dilator tube by a plurality of second connecting ribs.
3. A balloon catheter as in claim 1, wherein the distal end of the distal self-locking ring is fixedly connected to the proximal end of the outer tube of the distal connector, the proximal end of the distal self-locking ring having a flared portion flaring in a distal direction, the distal end of the flared portion being held tightly against the outer wall of the inner tube of the distal self-locking device, the proximal end of the flared portion and the inner tube of the distal self-locking device forming a gap therebetween into which the distal end of the proximal dilator is inserted.
4. A balloon catheter as in claim 3, wherein the proximal end of the distal self-locking ring defines a plurality of expansion slots, and wherein the proximal end of the distal self-locking ring opens along the expansion slots when the proximal dilator is inserted into the proximal end of the distal self-locking ring.
5. A balloon catheter as in claim 4 wherein the inner wall of the proximal end of the distal self-locking ring is further provided with a self-locking sealing ring, and when the balloon catheter is in a separated state, the proximal end of the distal self-locking ring and the inner tube of the distal self-locking device are sealed by the self-locking sealing ring.
6. The balloon catheter of claim 1, wherein the distal end self-locker inner tube is connected to the distal inner tube portion, the proximal dilator inner tube is connected to the proximal inner tube portion, the distal connector outer tube is connected to the distal outer tube portion, and the proximal connector outer tube is connected to the proximal outer tube portion by welding or adhesive.
7. A balloon catheter as in claim 1 wherein the distal end of the balloon has a catheter tip attached to the distal end of the inner tube, the portion of the inner tube within the balloon further having a marker visualization ring mounted thereto.
8. The balloon catheter according to claim 1, wherein said balloon catheter further comprises a catheter hub, said catheter hub being mounted at a proximal end of said outer tube and said inner tube, said catheter hub comprising a balloon filling port and a guidewire lumen crossing, a passageway between said outer tube and said inner tube being in communication with said balloon filling port, and said inner tube being in communication with said guidewire lumen crossing.
9. A connector assembly, characterized in that the connector assembly comprises a distal connector, a proximal connector and a cannula which can be mutually detached,
the distal connector comprises a distal connector outer tube, a distal self-locking device inner tube arranged in the distal connector outer tube, and a distal self-locking ring sleeved outside the distal self-locking device inner tube, wherein the distal end of the distal self-locking ring is connected to the distal connector outer tube,
the proximal connector comprises a proximal connector outer tube, a proximal end expander inner tube arranged in the proximal connector outer tube, and a proximal end expander with a proximal end connected to the proximal connector outer tube,
the proximal end of the distal connector is inserted into the distal end of the cannula, the distal end of the proximal connector is inserted into the proximal end of the cannula,
the connector assembly has a mating state and a separating state,
when the connector assembly is in a separated state, the distal connector is separated from the proximal connector, the distal self-locking ring is tightly held on the outer wall of the inner tube of the distal self-locking device to block a passage between the outer tube of the distal connector and the inner tube of the distal self-locking device,
when the connector assembly is in a butt joint state, the distal end of the proximal end expander is inserted into the distal end self-locking ring to expand the proximal end of the distal end self-locking ring, so that an filling channel for liquid to pass through is formed between the distal end self-locking ring and the inner tube of the distal end self-locking device.
10. The connector assembly of claim 9, wherein the outer distal connector tube is fixedly connected to the inner distal self-locking device tube by a plurality of first connecting ribs, the outer proximal connector tube is fixedly connected to the inner proximal dilator tube by a plurality of second connecting ribs,
the far end of the far-end self-locking ring is fixedly connected with the near end of the far-end connector outer tube, the near end of the far-end self-locking ring is provided with a trumpet portion which is opened towards the far end direction, the far end of the trumpet portion is tightly held on the outer wall of the far-end self-locking device inner tube, and a gap for inserting the far end of the near-end dilator is formed between the near end of the trumpet portion and the far-end self-locking device inner tube,
the proximal end of the distal self-locking ring is provided with a plurality of expansion seams, and when the proximal end expander is inserted into the proximal end of the distal self-locking ring, the proximal end of the distal self-locking ring is expanded along the expansion seams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010053778.4ACN111135431B (en) | 2020-01-17 | 2020-01-17 | Balloon catheter for anchoring guide wire and connector assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010053778.4ACN111135431B (en) | 2020-01-17 | 2020-01-17 | Balloon catheter for anchoring guide wire and connector assembly |
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| Publication Number | Publication Date |
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| CN111135431A CN111135431A (en) | 2020-05-12 |
| CN111135431Btrue CN111135431B (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010053778.4AActiveCN111135431B (en) | 2020-01-17 | 2020-01-17 | Balloon catheter for anchoring guide wire and connector assembly |
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| Country | Link |
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| CN (1) | CN111135431B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118252566A (en)* | 2022-12-28 | 2024-06-28 | 深圳市先健纬康科技有限公司 | Balloon Sheath |
Citations (5)
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|---|---|---|---|---|
| US4978341A (en)* | 1988-04-07 | 1990-12-18 | Schneider Europe | Introducer valve for a catheter arrangement |
| US7465311B2 (en)* | 2001-11-01 | 2008-12-16 | Advanced Cardiovascular Systems, Inc. | Catheter having an improved distal tip |
| CN107278160A (en)* | 2015-05-26 | 2017-10-20 | 血管解决方案公司 | Seal wire ligamentopexis |
| CN109875615A (en)* | 2018-04-12 | 2019-06-14 | 中国医学科学院阜外医院 | an auxiliary catheter |
| CN209075810U (en)* | 2018-05-29 | 2019-07-09 | 江苏唯德康医疗科技有限公司 | The seal wire being securable in non-vascular cavity |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013021998A1 (en)* | 2013-12-30 | 2015-07-02 | Alexander Rübben | balloon catheter |
- 2020
- 2020-01-17CNCN202010053778.4Apatent/CN111135431B/enactiveActive
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4978341A (en)* | 1988-04-07 | 1990-12-18 | Schneider Europe | Introducer valve for a catheter arrangement |
| US7465311B2 (en)* | 2001-11-01 | 2008-12-16 | Advanced Cardiovascular Systems, Inc. | Catheter having an improved distal tip |
| CN107278160A (en)* | 2015-05-26 | 2017-10-20 | 血管解决方案公司 | Seal wire ligamentopexis |
| CN109875615A (en)* | 2018-04-12 | 2019-06-14 | 中国医学科学院阜外医院 | an auxiliary catheter |
| CN209075810U (en)* | 2018-05-29 | 2019-07-09 | 江苏唯德康医疗科技有限公司 | The seal wire being securable in non-vascular cavity |
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| Publication number | Publication date |
|---|---|
| CN111135431A (en) | 2020-05-12 |
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