CN115463318B - Balloon catheter with recyclable medicine - Google Patents
Balloon catheter with recyclable medicine Download PDFInfo
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- CN115463318B CN115463318B CN202211180616.2A CN202211180616A CN115463318B CN 115463318 B CN115463318 B CN 115463318B CN 202211180616 A CN202211180616 A CN 202211180616A CN 115463318 B CN115463318 B CN 115463318B
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- balloon
- magnetic
- channel
- medicine
- drug
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Classifications
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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
- A61M25/104—Balloon catheters used for angioplasty
-
- 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
-
- 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
- A61M2025/1043—Balloon catheters with special features or adapted for special applications
- A61M2025/105—Balloon catheters with special features or adapted for special applications having a balloon suitable for drug delivery, e.g. by using holes for delivery, drug coating or membranes
-
- 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
- A61M2025/1043—Balloon catheters with special features or adapted for special applications
- A61M2025/1086—Balloon catheters with special features or adapted for special applications having a special balloon surface topography, e.g. pores, protuberances, spikes or grooves
-
- 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
- A61M2025/1043—Balloon catheters with special features or adapted for special applications
- A61M2025/1088—Balloon catheters with special features or adapted for special applications having special surface characteristics depending on material properties or added substances, e.g. for reducing friction
-
- 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
- A61M2025/1043—Balloon catheters with special features or adapted for special applications
- A61M2025/109—Balloon catheters with special features or adapted for special applications having balloons for removing solid matters, e.g. by grasping or scraping plaque, thrombus or other matters that obstruct the flow
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/02—General characteristics of the apparatus characterised by a particular materials
Abstract
The application provides a balloon catheter with a recoverable drug, which comprises a connecting pipe, a drug application balloon, a recovery structure, a first magnetic attraction structure and a second magnetic attraction structure, wherein the connecting pipe comprises an inner pipe and an outer pipe, the inner pipe is positioned in the outer pipe, a pressure filling and releasing channel is formed between the outer pipe and the inner pipe, the inner pipe is used for a guide wire to pass through, the drug application balloon is connected on the outer pipe and communicated with the pressure filling and releasing channel, the recovery structure is connected on the outer pipe and is arranged at intervals with the drug application balloon, the first magnetic attraction structure is connected on the inner pipe and positioned in the drug application balloon, the magnetic drug is adsorbed on the surface of the drug application balloon, the second magnetic attraction structure is connected on the inner pipe and positioned in the recovery structure and is used for magnetically attracting the unabsorbed magnetic drug on the recovery structure. The balloon catheter with the recyclable medicine can improve the adhesion rate of the medicine, reduce the loss of the medicine pushed into the blood vessel by the balloon catheter, control the accurate release of the medicine, recycle the medicine and reduce the medicine residue.
Description
Technical Field
The application belongs to the technical field of medical instruments, and particularly relates to a balloon catheter with a recoverable medicine.
Background
Vascular intervention is an important treatment mode for carrying out vascular stenosis blood circulation reconstruction treatment. In vascular interventions, balloon catheters are often used as the main vascular interventional instrument. In order to avoid the loss of the medicine in the interventional operation process, the medicine mixed iron powder can be made into magnetic medicine, a magnetic attraction structure is arranged in the balloon catheter, and the magnetic medicine is adsorbed on the surface of the balloon. Balloon catheters in the prior art utilize a magnetic structure to control the accurate release of drugs, but do not recover unabsorbed drugs.
Disclosure of Invention
The embodiment of the application aims to provide a balloon catheter with a recoverable drug, which solves the technical problem that unabsorbed drugs are not recovered in the prior art.
In order to achieve the above purpose, the application adopts the following technical scheme: there is provided a drug-recoverable balloon catheter for delivering magnetic drugs, comprising:
the connecting pipe comprises an inner pipe and an outer pipe, the inner pipe is positioned inside the outer pipe, a pressure filling and releasing channel is formed between the outer pipe and the inner pipe, and the inner pipe is used for a guide wire to pass through;
the medicine applying saccule is connected to the outer tube and communicated with the pressure filling and releasing channel;
the recovery structure is connected to the outer tube and is arranged at intervals with the drug application saccule;
the first magnetic structure is connected to the inner tube and positioned in the pesticide application balloon and is used for controlling the magnetic pesticide to be adsorbed on the surface of the pesticide application balloon;
and the second magnetic attraction structure is connected to the inner tube and positioned inside the recovery structure and is used for magnetically attracting the unabsorbed magnetic medicine to the recovery structure.
In one embodiment, the first magnetic structure comprises a first magnetic core and a first spiral line, the first magnetic core is in a hollow tube shape, the first magnetic core is sleeved on the inner tube, and the first spiral line is sleeved on the first magnetic core;
the second magnetic structure comprises a second magnetic core and a second spiral line, the second magnetic core is hollow, the second magnetic core is sleeved on the inner pipe, and the second spiral line is sleeved on the second magnetic core.
In one embodiment, the first magnetic structure further includes a first wire and a first switch, one end of the first wire is electrically connected to the first spiral line, and the other end of the first wire is electrically connected to the first switch;
the second magnetic structure further comprises a second lead and a second switch, one end of the second lead is electrically connected with the second spiral line, and the other end of the second lead is electrically connected with the second switch.
In one embodiment, the middle part of the first wire is located in the inner tube, and one end of the first wire passes through the inner wall of the inner tube and is electrically connected with the first spiral line;
one end of the second wire penetrates through the inner wall of the inner tube and is electrically connected with the second spiral line.
In one embodiment, the first spiral is wound on the first magnetic core and the second spiral is wound on the second magnetic core;
or, the first spiral line and the first magnetic core are arranged at intervals, and the second spiral line and the second magnetic core are arranged at intervals.
In one embodiment, the device further comprises a base, the base is in sealing connection with one end, far away from the drug delivery saccule, of the connecting pipe, a first cavity channel, a second cavity channel and a third cavity channel are arranged on the base, the first cavity channel and the second cavity channel are communicated with the inside of the inner pipe, and the third cavity channel is communicated with the pressure filling and releasing channel.
In one embodiment, a plugging portion for sealing the pressure filling and releasing channel is arranged at one end of the outer tube away from the base, and the plugging portion is conical.
In one embodiment, a developing ring is disposed on the inner tube, the developing ring being located inside the dispensing balloon.
In one embodiment, the base is provided with a guide wire connector, a pressure-filling and releasing connector, an electric connection end and a switch seat, the first cavity is positioned in the guide wire connector, the second cavity is positioned in the electric connection end, the third cavity is positioned in the pressure-filling and releasing connector, and the first switch and the second switch are mounted on the switch seat.
In one embodiment, the first magnetically attractable structure is a permanent magnet and the second magnetically attractable structure is a permanent magnet.
In one embodiment, the device further comprises a balloon protection sleeve, a containing cavity is formed in the balloon protection sleeve, the balloon protection sleeve is detachably connected to the connecting pipe, and when the balloon protection sleeve is connected to the connecting pipe, the drug application balloon and the recovery structure are located in the containing cavity.
In one embodiment, the recovery structure is a circular balloon or a special-shaped balloon, and the recovery structure is communicated with the pressure filling and releasing channel.
The balloon catheter with the recoverable medicine provided by the embodiment of the application has the beneficial effects that: compared with the prior art, the balloon catheter with the recyclable medicine has the advantages that the guide wire is arranged inside the inner tube in a penetrating manner, the vascular lesion is conveniently found, the first magnetic attraction structure is arranged inside the medicine application balloon, the second magnetic attraction structure is arranged inside the recovery structure, the magnetic medicine can be adsorbed on the surface of the medicine application balloon, the first magnetic attraction structure adsorbs the magnetic medicine, the medicine attachment rate is improved, the loss of the medicine pushed into the blood vessel by the balloon catheter is reduced, the medicine application balloon is pressurized and depressurized through the pressurizing and depressurizing channel, the contraction and expansion of the medicine application balloon are controlled, the accurate release of the medicine is controlled, the medicine which is not absorbed by the blood vessel can be adsorbed on the recovery structure by the second magnetic attraction structure, the medicine is recovered, and the medicine residue is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a drug-recoverable balloon catheter according to an embodiment of the present application;
FIG. 2 is a schematic view of a partial structure of an application balloon of a drug-recoverable balloon catheter according to an embodiment of the present application;
FIG. 3 is a schematic view of a part of a recovery structure of a drug-recoverable balloon catheter according to an embodiment of the present application;
fig. 4 is a schematic structural view of a first magnetic structure of a drug-recoverable balloon catheter according to an embodiment of the present application;
FIG. 5 is a schematic structural view of a second magnetic structure of a drug-recoverable balloon catheter according to an embodiment of the present application;
fig. 6 is a schematic view showing a partial structure of a base of a drug-recoverable balloon catheter according to an embodiment of the present application.
Wherein, each reference sign in the figure:
1. a connecting pipe;
11. an inner tube; 12. an outer tube; 121. a blocking part; 13. a pressure filling and releasing channel;
2. an administration balloon; 21. a developing ring;
3. a recovery structure;
4. a first magnetic structure;
41. a first magnetic core; 42. a first spiral;
5. a second magnetic structure;
51. a second magnetic core; 52. a second spiral;
6. a base;
61. a guide wire joint; 611. a first channel; 62. an electrical connection terminal; 621. a second channel; 63. a pressure filling and releasing joint; 631. a third channel; 64. a switch base; 641. a first switch; 642. a second switch;
7. a balloon protective sleeve; 71. a receiving chamber;
8. magnetic drugs.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Reference in the specification to "one embodiment," "some embodiments," or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Referring to fig. 1 and 2 together, a description will now be given of a drug-recoverable balloon catheter according to an embodiment of the present application. The drug-recoverable balloon catheter is used for applying magnetic drugs 8 and comprises a connecting pipe 1, a drug application balloon 2, a recovery structure 3, a first magnetic attraction structure 4 and a second magnetic attraction structure 5. The connecting pipe 1 comprises an inner pipe 11 and an outer pipe 12 which are of hollow structures, the inner pipe 11 is positioned inside the outer pipe 12, a pressure filling and releasing channel 13 is formed between the outer pipe 12 and the inner pipe 11, the inner pipe 11 is used for a guide wire to pass through, and the guide wire is used for conveniently finding a vascular lesion. The medicine applying saccule 2 is connected to the outer tube 12 and communicated with the pressure filling and releasing channel 13, the medicine applying saccule 2 is wrapped and connected to the outer side of the outer tube 12, an opening is arranged on the outer tube 12 corresponding to the medicine applying saccule 2, and the pressure filling and releasing channel 13 is communicated with the medicine applying saccule 2 through the opening. The pressurizing and depressurizing channel 13 pressurizes and depressurizes the dispensing balloon 2, and controls the dispensing balloon 2 to contract and expand. The recovery structure 3 is connected to the outer tube 12 and is arranged at a distance from the dispensing balloon 2. The first magnetic attraction structure 4 is connected to the inner tube 11 and is positioned inside the drug application balloon 2, and is used for controlling the magnetic drug 8 to be adsorbed on the surface of the drug application balloon 2. The second magnetic attraction structure 5 is connected to the inner tube 11 and is located inside the recovery structure 3, and is used for magnetically attracting the unabsorbed magnetic drug 8 to the recovery structure 3.
The balloon catheter with the recoverable medicine provided by the embodiment of the application has the beneficial effects that: compared with the prior art, the balloon catheter with the recyclable medicine has the advantages that the guide wire is arranged inside the inner tube 11 in a penetrating manner, the vascular lesion is conveniently found, the first magnetic suction structure 4 is arranged inside the medicine applying balloon 2, the second magnetic suction structure 5 is arranged inside the recovery structure 3, the magnetic medicine 8 can be adsorbed on the surface of the medicine applying balloon 2, the first magnetic suction structure 4 adsorbs the magnetic medicine 8, the medicine attachment rate is improved, the loss of the medicine pushed into the blood vessel by the balloon catheter is reduced, the medicine applying balloon 2 is pressurized and depressurized through the pressurizing and depressurizing channel 13, the contraction and the expansion of the medicine applying balloon 2 are controlled, the accurate release of the medicine is controlled, the medicine which is not absorbed by the blood vessel can be adsorbed on the recovery structure 3 by the second magnetic suction structure 5, the medicine is recovered, and the medicine residue is reduced.
Wherein, the magnetic medicine 8 is a mixed composition of medicine and iron powder, the magnetic medicine 8 is conical, one end is sharp, and the other end is flat. Make the smooth one side of magnetism medicine 8 conveniently adsorb at the sacculus 2 surface of giving medicine to poor free of charge, when the sacculus 2 of giving medicine to poor free of charge expands, sharp-pointed one end pierces pathological change department more easily, improves the treatment.
In one embodiment, referring to fig. 1, 2, 4 and 5, the first magnetic structure 4 includes a first magnetic core 41 and a first spiral line 42, the first magnetic core 41 is hollow, the first magnetic core 41 is sleeved on the inner tube 11, and the first spiral line 42 is sleeved on the first magnetic core 41. The first magnetic core 41 is made of magnetic material, the inner diameter of the first magnetic core 41 is larger than the outer diameter of the inner tube 11, and the first magnetic core 41 is welded on the inner tube 11 and fixed in position. The first spiral line 42 is electrified, and the first magnetic attraction structure 4 generates magnetic force according to the electro-magnetism principle, so that the magnetic medicine 8 can be adsorbed on the surface of the medicine application balloon 2. The medicine applying saccule 2 expands and applies medicine at the lesion, at the moment, the power supply of the first spiral line 42 is cut off, the first magnetic attraction structure 4 loses magnetic force, so that the magnetic medicine 8 is conveniently separated from the medicine applying saccule 2 and adsorbed at the vascular lesion, and the medicine is favorably fully adsorbed at the vascular lesion.
The second magnetic attraction structure 5 comprises a second magnetic core 51 and a second spiral line 52, the second magnetic core 51 is in a hollow tube shape, the second magnetic core 51 is sleeved on the inner tube 11, and the second spiral line 52 is sleeved on the second magnetic core 51. The second magnetic core 51 is made of magnetic material, the inner diameter of the second magnetic core 51 is larger than the outer diameter of the inner tube 11, and the second magnetic core 51 is welded on the inner tube 11 and fixed in position. The second spiral line 52 is electrified, and the second magnetic attraction structure 5 generates magnetic force according to the electro-magnetism principle, so that the unabsorbed magnetic medicine 8 can be adsorbed on the surface of the recovery structure 3.
In one embodiment, referring to fig. 1, 4, 5 and 6, the first magnetic structure 4 further includes a first wire and a first switch 641, one end of the first wire is electrically connected to the first spiral line 42, and the other end of the first wire is electrically connected to the first switch 641.
The second magnetic structure 5 further includes a second wire and a second switch 642, one end of the second wire is electrically connected to the second spiral line 52, and the other end of the second wire is electrically connected to the second switch 642.
The first wire and the second wire are externally connected with a power supply, and are connected in parallel and are not interfered with each other. The first switch 641 controls the on-off of the first spiral 42 and the second switch 642 controls the on-off of the second spiral 52. The generation and disappearance of the magnetic force of the first magnetic attraction structure 4 and the second magnetic attraction structure 5 are conveniently controlled.
When the balloon catheter is pushed to the lesion, only the first switch 641 is required to be opened, and the first magnetic attraction structure 4 is controlled to generate magnetic force so as to adsorb the medicine on the surface of the medicine application balloon 2. When the medicine applying saccule 2 reaches the lesion, the pressure charging and discharging channel 13 charges the medicine applying saccule 2, the medicine applying saccule 2 expands, the magnetic medicine 8 is attached to the lesion, the first switch 641 is disconnected, the magnetic force of the first magnetic attraction structure 4 is controlled to disappear, and the medicine is conveniently absorbed by the lesion. The second switch 642 is turned on to control the second magnetic attraction structure 5 to generate magnetic force, and the unabsorbed magnetic medicine 8 is attracted to the surface of the recovery structure 3.
In one embodiment, the middle portion of the first wire is located in the inner tube 11, and the first wire passes through the inner wall of the inner tube 11 and is electrically connected to the first spiral line 42. The middle part of the second wire is positioned in the inner tube 11, and the second wire passes through the inner wall of the inner tube 11 and is electrically connected with the second spiral line 52. The inner wall of the inner tube is provided with an opening for the first wire and the second wire to pass through, and then the inner tube is sealed by sealant, so that the air tightness of the pressure filling and releasing channel is ensured.
In one embodiment, referring to fig. 4 and 5, a first spiral 42 is wound around a first magnetic core 41 and a second spiral 52 is wound around a second magnetic core 51. The overall volume of the first magnetic attraction structure 4 and the second magnetic attraction structure 5 can be reduced, and the space is fully utilized.
The first spiral 42 and the first magnetic core 41 may be disposed at a distance, and the second spiral 52 and the second magnetic core 51 may be disposed at a distance. The first spiral line 42 is suspended outside the first magnetic core 41, and the second spiral line 52 is suspended outside the second magnetic core 51.
In one embodiment, referring to fig. 2, two developing rings 21 are disposed on the inner tube 11, the two developing rings 21 are located inside the dispensing balloon 2, and the two developing rings 21 are located at two ends of the first magnetic attraction structure 4. The developing ring 21 is arranged, so that the position and the condition of a lesion can be conveniently observed.
In one embodiment, referring to fig. 1 and 6, the drug-recoverable balloon catheter further includes a base 6, the base 6 is connected to an end of the connecting tube 1 away from the drug-applying balloon 2 in a sealing manner, a first channel 611, a second channel 621 and a third channel 631 are disposed on the base 6, the first channel 611 and the second channel 621 are communicated with the inside of the inner tube 11, and the third channel 631 is communicated with the pressure-filling channel 13. The first channel 611, the second channel 621 and the third channel 631 do not interfere with each other, and the third channel 631 facilitates pressurizing and depressurizing the pressurizing and depressurizing channel 13. The base 6 is arranged and connected at one end of the connecting pipe 1 in a sealing way, so that the air tightness of the pressure filling and releasing channel 13 is ensured, and the drug application saccule 2 can be stably contracted and expanded.
In one embodiment, referring to fig. 1 and 3, an end of the outer tube 12 away from the base 6 is provided with a blocking portion 121 for sealing the pressure filling and releasing channel 13, and the blocking portion 121 has a conical shape. One end of the outer tube 12, which is far away from the base 6, is welded on the inner tube 11, the outer tube 12 is folded towards the inner tube 11 to form a plugging part 121, and the plugging part 121 is used for guaranteeing the air tightness of the pressure filling and releasing channel 13 and guaranteeing the connection stability of the inner tube 11 and the outer tube 12. The blocking portion 121 has a conical shape, and can be easily inserted into a blood vessel during insertion of the blood vessel.
In one embodiment, referring to fig. 1 and 6, the base 6 is provided with a wire connector 61, a pressure-filling and releasing connector 63, a power-receiving terminal 62 and a switch seat 64, the first channel 611 is located in the wire connector 61, the second channel 621 is located in the power-receiving terminal 62, the third channel 631 is located in the pressure-filling and releasing connector 63, and the first switch 641 and the second switch 642 are mounted on the switch seat 64. The base 6 is tree-shaped, and the base 6 is used as a handle, so that the handheld operation is convenient. The guide wire is inserted into the interior of the inner tube 11 through the first lumen 611 in the guide wire connector 61, and the first and second wires extend through the interior of the inner tube 11 from the second lumen 621 of the electrical terminal 62. The pressure filling and releasing connector 63 is connected with a pressure filling and releasing device, and is communicated with the pressure filling and releasing channel 13 through a third cavity 631, so that the pressure filling and releasing channel 13 is conveniently filled or released, and the shrinkage or expansion of the dispensing balloon 2 is controlled.
In one embodiment, the first magnetic attraction structure 4 may also be a permanent magnet, and the second magnetic attraction structure 5 may also be a permanent magnet. The first magnetic attraction structure 4 and the second magnetic attraction structure 5 are arranged as permanent magnets, and when the balloon catheter advances to the lesion, the medicine is adsorbed on the surface of the medicine application balloon 2. When the medicine applying balloon 2 reaches the lesion, the pressure filling and releasing channel 13 pressurizes the medicine applying balloon 2, the medicine applying balloon 2 expands, and the magnetic medicine 8 is attached to the lesion. At this time, the distance between the magnetic medicine 8 and the permanent magnet inside the medicine application balloon 2 is increased, the adsorption force of the permanent magnet inside the medicine application balloon 2 to the magnetic medicine 8 is weakened, and the magnetic medicine 8 can be well absorbed by the lesion. Along with the blood flow, the unabsorbed magnetic medicine 8 is driven to move to the recovery structure 3, and the permanent magnet in the recovery structure 3 can absorb the unabsorbed magnetic medicine 8 on the recovery structure 3.
In one embodiment, referring to fig. 1, the drug-recoverable balloon catheter further comprises a balloon protecting sleeve 7, wherein a containing cavity 71 is arranged inside the balloon protecting sleeve 7, the balloon protecting sleeve 7 is detachably connected to the connecting tube 1, and when the balloon protecting sleeve 7 is connected to the connecting tube 1, the drug-applying balloon 2 and the recovery structure 3 are located in the containing cavity 71. The balloon protection sleeve 7 can better protect the dispensing balloon 2 and the recovery structure 3, and avoid abrasion or pollution of the dispensing balloon 2 and the recovery structure 3.
In one embodiment, referring to fig. 1 and 3, the recovery structure 3 is a circular balloon or a special-shaped balloon, and the special-shaped balloon may be an ellipsoidal balloon or a conical balloon, and the recovery structure 3 is communicated with the pressure charging and discharging channel 13. By arranging the recovery structure 3 as a balloon and communicating the recovery structure 3 with the pressure filling and releasing channel 13, the shrinkage and expansion of the recovery structure 3 can be controlled. When the medicine applying balloon 2 reaches the lesion, the medicine applying balloon 2 is pressurized by the pressurizing and depressurizing channel 13, the recovery structure 3 is pressurized by the pressurizing and depressurizing channel 13, and the recovery structure 3 is expanded. The gap between the recovery structure 3 and the blood vessel wall is reduced, so that the unabsorbed magnetic medicine 8 is conveniently blocked by the recovery structure 3, and the second magnetic attraction structure 5 is adsorbed on the recovery structure 3.
The working process of the balloon catheter with the recoverable medicine provided by the embodiment of the application comprises the following steps:
the balloon protection sleeve 7 is taken down, the first switch 641 is opened, the magnetic medicine 8 is adsorbed on the medicine application balloon 2, the medicine application balloon passes through the guide wire in the inner tube 11, and the balloon catheter is pushed to the lesion. When the medicine applying balloon 2 reaches the lesion, the pressure filling and releasing channel 13 pressurizes the medicine applying balloon 2, the medicine applying balloon 2 expands, the magnetic medicine 8 is attached to the lesion, the first switch 641 is opened, the second switch 642 is opened, the unabsorbed magnetic medicine 8 is adsorbed on the surface of the recovery structure 3, after medicine application is finished, the pressure filling and releasing channel 13 releases pressure, the medicine applying balloon 2 contracts, and the balloon catheter is returned and taken out.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.
Claims (8)
1. A drug-recoverable balloon catheter, comprising:
the connecting pipe comprises an inner pipe and an outer pipe, the inner pipe is positioned inside the outer pipe, a pressure filling and releasing channel is formed between the outer pipe and the inner pipe, and the inner pipe is used for a guide wire to pass through;
the medicine applying saccule is connected to the outer tube and communicated with the pressure filling and releasing channel;
the recovery structure is connected to the outer tube and is arranged at intervals with the drug application saccule;
the first magnetic structure is connected to the inner tube and positioned in the pesticide application balloon and is used for controlling the magnetic pesticide to be adsorbed on the surface of the pesticide application balloon;
the second magnetic attraction structure is connected to the inner tube and is positioned in the recovery structure and used for magnetically attracting the unabsorbed magnetic medicine to the recovery structure, the first magnetic attraction structure comprises a first magnetic core and a first spiral line, the first magnetic core is in a hollow tubular shape, the first magnetic core is sleeved on the inner tube, and the first spiral line is sleeved on the first magnetic core;
the second magnetic structure comprises a second magnetic core and a second spiral line, the second magnetic core is hollow, the second magnetic core is sleeved on the inner pipe, and the second spiral line is sleeved on the second magnetic core;
the first magnetic structure further comprises a first lead and a first switch, one end of the first lead is electrically connected with the first spiral line, and the other end of the first lead is electrically connected with the first switch;
the second magnetic structure further comprises a second lead and a second switch, one end of the second lead is electrically connected with the second spiral line, and the other end of the second lead is electrically connected with the second switch.
2. The drug-recoverable balloon catheter of claim 1, wherein a middle portion of the first wire is positioned in the inner tube, and one end of the first wire is electrically connected to the first spiral wire through an inner wall of the inner tube;
the middle part of the second wire is positioned in the inner tube, and one end of the second wire passes through the inner wall of the inner tube and is electrically connected with the second spiral line.
3. The drug-recoverable balloon catheter of claim 2, further comprising a base sealingly connected to an end of the connecting tube remote from the drug-delivery balloon, wherein the base is provided with a first channel, a second channel, and a third channel, wherein the first channel and the second channel are in communication with the interior of the inner tube, and the third channel is in communication with the pressure-filling and releasing channel.
4. A drug-recoverable balloon catheter according to claim 3, wherein the end of the outer tube remote from the base is provided with a plug for sealing the inflation and deflation channel, the plug being conical.
5. A drug-recoverable balloon catheter according to claim 3, wherein the base is provided with a guide wire connector, a pressure-filling and releasing connector, an electrical connection terminal and a switch seat, the first channel is located in the guide wire connector, the second channel is located in the electrical connection terminal, the third channel is located in the pressure-filling and releasing connector, and the first switch and the second switch are mounted on the switch seat.
6. The drug-recoverable balloon catheter of claim 1, wherein the first magnetically attractable structure is a permanent magnet and the second magnetically attractable structure is a permanent magnet.
7. The drug-recoverable balloon catheter of any of claims 1-6, further comprising a balloon protection sleeve, wherein a receiving cavity is provided within the balloon protection sleeve, the balloon protection sleeve being removably coupled to the connecting tube, the dispensing balloon and the recovery structure being positioned within the receiving cavity when the balloon protection sleeve is coupled to the connecting tube.
8. The drug-recoverable balloon catheter of any of claims 1-6, wherein the recovery structure is a circular balloon or a shaped balloon, the recovery structure being in communication with the inflation and deflation channel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211180616.2A CN115463318B (en) | 2022-09-27 | 2022-09-27 | Balloon catheter with recyclable medicine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211180616.2A CN115463318B (en) | 2022-09-27 | 2022-09-27 | Balloon catheter with recyclable medicine |
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| CN115463318A CN115463318A (en) | 2022-12-13 |
| CN115463318B true CN115463318B (en) | 2023-08-18 |
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| CN202211180616.2A Active CN115463318B (en) | 2022-09-27 | 2022-09-27 | Balloon catheter with recyclable medicine |
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|---|---|---|---|---|
| US5893840A (en) * | 1991-01-04 | 1999-04-13 | Medtronic, Inc. | Releasable microcapsules on balloon catheters |
| JP2002345968A (en) * | 2001-05-29 | 2002-12-03 | Rikogaku Shinkokai | Magnetic transportation catheter for medicines |
| CN104174110A (en) * | 2013-05-23 | 2014-12-03 | 微创心脉医疗科技（上海）有限公司 | Medicine balloon and preparation method thereof |
| CN106621001A (en) * | 2015-10-27 | 2017-05-10 | 先健科技(深圳)有限公司 | Recyclable drug balloon catheter |
| CN206950442U (en) * | 2017-01-22 | 2018-02-02 | 业聚医疗器械(深圳)有限公司 | medicinal balloon catheter |
| CN115054812A (en) * | 2022-08-18 | 2022-09-16 | 广东博迈医疗科技股份有限公司 | Balloon catheter device |
| CN115089849A (en) * | 2022-08-18 | 2022-09-23 | 广东博迈医疗科技股份有限公司 | Drug balloon catheter for recovering floating drug |
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2022
- 2022-09-27 CN CN202211180616.2A patent/CN115463318B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5893840A (en) * | 1991-01-04 | 1999-04-13 | Medtronic, Inc. | Releasable microcapsules on balloon catheters |
| JP2002345968A (en) * | 2001-05-29 | 2002-12-03 | Rikogaku Shinkokai | Magnetic transportation catheter for medicines |
| CN104174110A (en) * | 2013-05-23 | 2014-12-03 | 微创心脉医疗科技（上海）有限公司 | Medicine balloon and preparation method thereof |
| CN106621001A (en) * | 2015-10-27 | 2017-05-10 | 先健科技(深圳)有限公司 | Recyclable drug balloon catheter |
| CN206950442U (en) * | 2017-01-22 | 2018-02-02 | 业聚医疗器械(深圳)有限公司 | medicinal balloon catheter |
| CN115054812A (en) * | 2022-08-18 | 2022-09-16 | 广东博迈医疗科技股份有限公司 | Balloon catheter device |
| CN115089849A (en) * | 2022-08-18 | 2022-09-23 | 广东博迈医疗科技股份有限公司 | Drug balloon catheter for recovering floating drug |
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| Publication number | Publication date |
|---|---|
| CN115463318A (en) | 2022-12-13 |
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