CN114849027A - Medicine sacculus with blood flow channel - Google Patents

Medicine sacculus with blood flow channel Download PDF

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Publication number
CN114849027A
CN114849027A CN202210402443.8A CN202210402443A CN114849027A CN 114849027 A CN114849027 A CN 114849027A CN 202210402443 A CN202210402443 A CN 202210402443A CN 114849027 A CN114849027 A CN 114849027A
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CN
China
Prior art keywords
balloon
unit
blood flow
guide wire
filling
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202210402443.8A
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Chinese (zh)
Inventor
杜瑞林
赵方华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hangzhou Barty Medical Technology Co ltd
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Hangzhou Barty Medical Technology Co ltd
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Publication date
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Publication of CN114849027A publication Critical patent/CN114849027A/en
Withdrawn legal-status Critical Current

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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
    • A61M25/1002—Balloon catheters characterised by balloon shape
    • 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
    • A61M25/10183—Compressible bulbs
    • 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
    • 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
    • A61M2025/1056—Balloon catheters with special features or adapted for special applications having guide wire lumens outside the main shaft, i.e. the guide wire lumen is within or on the surface of the balloon

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

Abstract

The invention belongs to the technical field of medical appliances, and particularly relates to a medicine balloon with a blood flow channel. The invention has the technical effects of stable medicine supply and keeping smooth blood flow in the medicine supply process through the guide wire, the pressurizing device, the balloon unit and the filling tube unit. The invention has the following advantages: firstly, the drug balloon is in a doughnut shape, and the middle part of the drug balloon is provided with a passage for blood to pass through, so that the blood flow is kept smooth in the drug supply process; secondly, the medicine balloon is connected with the liquid inlet pipe, and injected liquid jacks up the vascular wall from inside to outside, so that the medicine can continuously act on the vascular wall and cannot be easily separated; thirdly, the thread guide tube is arranged in the liquid inlet tube in a tube-in-tube mode, and the medicine saccule and the liquid inlet tube are conveyed to the blood vessel administration position together under the pushing action of the catheter seat through the guiding action of the thread guide; fourthly, the outer wall of the medicine balloon has expansion elasticity, and the inner wall of the medicine balloon has no expansion elasticity, so that the medicine balloon cannot expand inwards in the expansion process to block a blood flow channel.

Description

Medicine sacculus with blood flow channel
Technical Field
The invention belongs to the technical field of medical appliances, and particularly relates to a medicine balloon with a blood flow channel.
Background
Vascular diseases have become one of the most mortality diseases in humans. In recent years, with the improvement of treatment techniques, interventional surgical treatment has also become an important way to treat vascular diseases. Particularly, the occurrence of a medicine balloon reduces the problem of high restenosis rate after the implantation of a traditional medicine metal stent, the concept of 'intervention without implantation' is widely concerned in recent years, the medicine coating balloon dilatation catheter is generated due to the operation, and is used as a new generation minimally invasive technology for treating angiostenosis, the intervention means is used for replacing the implantation means, the complications caused by the implantation of a series of stents such as stent restenosis and the like are solved, the medicine balloon actually uses the balloon as a carrier to convey the medicine to a lesion position, but the action time of the medicine coating balloon dilatation catheter at the lesion position is short, because the expansion time of the medicine balloon dilatation catheter is short, the medicine is not released easily, and once the balloon is propped open at the lesion position, the blood vessel is blocked, the blood does not pass in a short time, and the far-end ischemia is easily caused.
For example, the Chinese patent with the publication number of CN111701081B and the publication number of 2020-09-25 discloses a drug coating balloon, the thickness of the drug coating is 1-2 mm, the diameter of the blank balloon is 3-6 mm, when the drug coating balloon reaches a injury, pectin is helpful for the active drug to be quickly released from the surface of the balloon coating, and the pectin is deposited on the surface of a vessel wall to reach the effective drug concentration. However, the drug balloon has short adherence time, the drug is difficult to absorb in a large amount, and the drug balloon blocks the blood vessel, so that the blood supply at the far end is insufficient.
Therefore, in summary, there is an urgent need for a drug balloon device that can supply drug stably and keep blood flow smooth during drug supply.
Disclosure of Invention
The invention aims to provide a medicine balloon with a blood flow channel, which has the technical effects of stable medicine supply and keeping smooth blood flow in the medicine supply process through a guide wire, a pressurizing device, a balloon unit and an filling tube unit.
The technical scheme adopted by the invention for solving the problems is as follows: a medicine balloon with a blood flow channel comprises a guide wire, a pressurizing device, a balloon unit and a filling tube unit; wherein:
medicine is attached to the outer ring surface of the balloon unit and is attached to the vessel wall in a pressurizing and expanding mode so as to release the medicine;
the filling tube unit is arranged on the balloon unit and is used for filling liquid into the balloon unit;
the balloon unit contains a channel for passage of blood flow;
the guide wire is arranged on the filling tube unit and is used for guiding the balloon unit into a blood vessel.
The further preferred technical scheme is as follows: the balloon unit comprises a balloon outer wall and a balloon inner wall; wherein:
the inner side surface of the outer wall of the balloon and the outer side surface of the inner wall of the balloon form a balloon filling cavity;
a blood flow channel is formed on the inner side surface of the inner wall of the saccule;
the filling tube unit is arranged in the balloon filling cavity and is used for filling liquid to expand the balloon filling cavity.
The further preferred technical scheme is as follows: the balloon unit further comprises a proximal pin; the filling pipe unit comprises a liquid inlet pipe; wherein:
the far end of the liquid inlet pipe is hermetically arranged on the near-end pin and is communicated with the balloon filling cavity;
the near end of the liquid inlet pipe is communicated with the pressurizing device.
The further preferred technical scheme is as follows: the balloon unit further comprises a distal pin; the filling tube unit further comprises a wire guide tube; wherein:
the wire guide tube is inserted into the liquid inlet tube and passes through the balloon filling cavity to be arranged on the far-end pin;
the guide wire is inserted into the guide wire tube;
the inner ring surface of the liquid inlet pipe and the outer ring surface of the wire guide pipe form a balloon filling channel.
The further preferred technical scheme is as follows: the balloon unit further comprises a guidewire seal; wherein:
the guide wire sealing element is arranged on the distal end face of the distal pin;
the seal is maintained as the guidewire passes through the guidewire seal.
The further preferred technical scheme is as follows: the filling tube unit further comprises a marker ring; wherein:
the marking ring is sleeved on the wire guide tube and is positioned in the balloon filling cavity;
the further preferred technical scheme is as follows: the inflation device is communicated with the balloon inflation channel.
The further preferred technical scheme is as follows: when the balloon filling cavity is expanded, the inner diameter and the outer diameter of the outer wall of the balloon are expanded, and the inner diameter and the outer diameter of the inner wall of the balloon are kept unchanged.
The further preferred technical scheme is as follows: the filling tube unit further comprises a catheter hub; wherein:
the conduit seat is arranged at the proximal end of the liquid inlet pipe.
The further preferred technical scheme is as follows: the filling tube unit further comprises a hypotube; wherein:
the far end of the hypotube is arranged on the end surface of the near end of the liquid inlet tube;
the hypotube proximal end is disposed on the catheter hub.
The invention has the following advantages:
firstly, the drug balloon is in a doughnut shape, and the middle part of the drug balloon is provided with a passage for blood to pass through, so that the blood flow is kept smooth in the drug supply process.
The second, the medicine sacculus is connected with the feed liquor pipe, and is inflatable after injecting liquid through the charging device to jack-up vascular wall from inside to outside, make the medicine continuously act on can not break away from easily in vascular wall department.
Thirdly, the thread guide tube is arranged in the liquid inlet tube in a tube-in-tube mode, and the medicine saccule and the liquid inlet tube are conveyed to the blood vessel administration position together under the pushing action of the catheter seat through the guiding action of the thread guide.
Fourthly, the outer wall of the medicine balloon has expansion elasticity, and the inner wall of the medicine balloon has no expansion elasticity, so that the medicine balloon cannot expand inwards in the expansion process to block a blood flow channel.
Drawings
FIG. 1 is a schematic structural view of a drug balloon and a delivery device and a pressurizing device thereof;
FIG. 2 is a schematic diagram of the structure of a drug balloon, a delivery device using a hypotube, and a pressurizing device according to the present invention;
FIG. 3 is a cross-sectional view of FIG. 2 cut along line AA;
FIG. 4 is a schematic structural view of the connection between the balloon unit and the filling tube unit according to the present invention;
in the drawings, the reference numerals denote the following components: the balloon inflation catheter comprises a balloon unit 1, an inflation catheter unit 2, a balloon outer wall 101, a balloon inner wall 102, a proximal pin 103, a guide wire sealing piece 105, a distal pin 104, a liquid inlet pipe 201, a guide wire catheter 202, a marking ring 203, a hypotube 204, a catheter seat 205, a guide wire 11 and a pressurizing device 12.
Detailed Description
Definition of
1. A far end: one end of the guide wire seal member is close to; similarly, as used herein, "proximal" refers to the end distal to the guidewire seal.
2. Inner side: the finger faces one side of the closed space; likewise, "outside" as used herein refers to the side facing the open space.
The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.
Example (b): as shown in fig. 1-4, a drug balloon with a blood flow channel comprises a guide wire 11, a pressurizing device 12, a balloon unit 1, and a filling tube unit 2; wherein:
medicine is attached to the outer ring surface of the balloon unit 1 and is attached to the vessel wall in a pressurizing and expanding mode so as to release the medicine;
the filling tube unit 2 is arranged on the balloon unit 1 and is used for pressurizing the balloon unit 1;
the balloon unit 1 contains a channel for passage of blood flow;
the guide wire 11 is arranged on the filling tube unit 2 and is used to guide the balloon unit 1 into the blood vessel.
In this embodiment, the guide wire 11 does not function to push the balloon unit 1. The function of the balloon unit 1 is to guide the balloon unit 1 into a blood vessel, to place the distal end of the guide wire 11 into a receiving blood vessel in use, thereby sliding the balloon unit 1 along the guide wire 11 into the receiving blood vessel and pushing the balloon unit 1 along the guide wire 11 through the filling tube unit 2.
The inflation device 12 is a prior art inflation device used in surgical operations, and generally includes a ring-shaped liner ring and a soft sleeve for connecting the inflation tube unit 2 to inflate and deflate the balloon unit 1, and the inflated liquid contains no bacterial impurities.
The 'medicine' refers to a medicine coated on the surface of the balloon and used for treating vascular diseases, such as paclitaxel medicine, taxol-tri-n-hexyl ester medicine and the like, which can be used for treating symptoms such as primary coronary lesions, the diameter ratio of the balloon unit 1 to blood vessels is 0.8-1.0, the adherent expansion lasting for 30-60 s is recommended to be preferred, before use, the balloon unit 1 is not touched by hands, and is not soaked in normal saline or other liquid, so as not to cause medicine loss, and the balloon unit 1 is a disposable device and cannot be reused, because the medicine is almost completely released to the lesion site after the balloon unit 1 is expanded, and the effect of conveying the medicine cannot be achieved after repeated use.
The method of use of the balloon dilation catheter described in this example is as follows:
firstly, installing the guide wire 11 into the filling tube unit 2, and placing the distal end of the guide wire 11 in a receiving end blood vessel and extending the guide wire to an administration position;
secondly, the balloon unit 1 is pushed to a target administration position of a blood vessel along the guide wire 11 through the filling tube unit 2;
thirdly, opening the pressurizing device 12 to perform pressurizing operation, so that the diameter of the balloon unit 1 is expanded, and closing the pressurizing device 12 when the balloon unit 1 jacks up the vessel wall of the target administration site;
fourthly, after the administration process is finished, opening the pressurizing device 12 to perform pressure relief operation, so that the diameter of the balloon unit 1 is contracted, and closing the pressurizing device 12 until the balloon unit 1 can freely move in the blood vessel.
It should be noted that the balloon unit 1 is always left with the passage for blood flow during inflation and deflation, i.e. the blood supply at the distal end is not affected during the entire administration.
The balloon unit 1 comprises a balloon outer wall 101 and a balloon inner wall 102; wherein:
the inner side surface of the balloon outer wall 101 and the outer side surface of the balloon inner wall 102 form a balloon filling cavity;
the inner side surface of the balloon inner wall 102 forms a blood flow channel;
the filling tube unit 2 is disposed in the balloon filling cavity and is used for inflating the balloon filling cavity by inflation pressure.
In this embodiment, the balloon outer wall 101 is made of a material with certain elasticity and high strength, such as a plastic grade material like nylon, so that the balloon outer wall 101 is not too soft to gather into a lump to block the blood vessel, and has certain elasticity but not large elasticity, and the elasticity range is enough to make the balloon outer wall 101 jack up the inner wall of the blood vessel by deformation.
In addition, the balloon outer wall 101 and the balloon inner wall 102 form a structure similar to a "donut", the outer side surface of the donut is coated with medicine, the hollow part of the donut is the blood flow channel, and the filling tube unit 2 and the guide wire 11 pass through the inner cavity of the donut and do not occupy the blood flow channel.
In addition, the balloon filling cavity has the function that when the third step of the inflating device 12 performs the inflating operation, the balloon filling cavity is used for containing the liquid from the inflating device 12, and then the hydraulic pressure rises, and the rising hydraulic pressure overcomes the elastic force of the balloon outer wall 101, so that the balloon filling cavity is wholly expanded, the balloon outer wall 101 is expanded, and the inner wall of the blood vessel is jacked up for administration.
In addition, the blood flow channel has the function that the balloon unit 1 moves in the blood vessel, and the blood flow channel can temporarily play a role of blood flow passing to a certain extent during the administration process of the balloon unit 1, so that the blood flow in the whole blood vessel is kept unblocked.
The balloon unit 1 further comprises proximal prongs 103; the filling pipe unit 2 comprises a liquid inlet pipe 201; wherein:
the far end of the liquid inlet pipe 201 is hermetically arranged on the near-end base pin 103 and is communicated with the balloon filling cavity;
the proximal end of the liquid inlet pipe 201 is communicated with the pressurizing device 12.
In this embodiment, the fluid inlet tube 201 is connected to the proximal pin 103 in a sealing manner, so that the fluid flowing from the fluid inlet tube 201 into the inflation lumen of the balloon does not leak out.
In addition, the liquid inlet pipe 201 also plays a role of pushing the balloon unit 1 in the blood vessel.
The balloon unit 1 further comprises a distal pin 104; the filling tube unit 2 further comprises a guide wire tube 202; wherein:
the guidewire tube 202 is inserted into the fluid inlet tube 201 and is disposed on the distal prong 104 through the balloon inflation lumen;
the guide wire 11 is inserted into the guide wire tube 202;
the inner ring surface of the liquid inlet pipe 201 and the outer ring surface of the guide wire pipe 202 form a balloon filling channel.
In the present embodiment, a guide wire tube 202 is inserted into the liquid inlet tube 201 to form a "tube-in-tube" structure, the guide wire 11 is inserted into the guide wire tube 202, i.e. the liquid inlet tube 201 advances along the guide wire 11, and finally the balloon unit 1 extends to the administration site along with the liquid inlet tube 201, so that the liquid inlet tube 201 is not guided to the balloon unit 1 by an additional navigation device, the blood flow channel is not obstructed by following the guide wire 11, and a tube is not additionally added outside the guide wire 11, which greatly obstructs the advancing process of the balloon unit 1, therefore, the present invention is a very smart design.
The balloon unit 1 further comprises a guide wire seal 105; wherein:
the wire seal 105 is disposed on a distal end face of the distal pin 104;
the seal is maintained as the guidewire 11 passes through the guidewire seal 105.
In this embodiment, the seal wire 11 passes in the seal wire pipe 202 gets into the blood vessel, can make the blood flow in the blood vessel along the seal wire 11 gets into in the seal wire pipe 202, endanger patient's health on the one hand, on the other hand pollutes the equipment the seal wire 11 with the distal end junction of seal wire pipe 202 has set up seal wire sealing member 105, with the seal wire 11 closely laminates, makes the seal wire 11 business turn over the process of seal wire pipe 202 can not have blood to get into seal wire pipe 202.
In addition, the tip of the wire seal 105 has a rounded shape to avoid scratching the blood vessel, and the physician can shape the tip according to clinical needs to suit the actual needs.
The filling tube unit 2 further comprises a marker ring 203; wherein:
the marking ring 203 is sleeved on the guide wire tube 202 and is positioned in the balloon filling cavity;
in this embodiment, the marking ring 203 is used for displaying the current position of the balloon unit 1 in the blood vessel through monitoring of related devices, so that a doctor can conveniently push the balloon unit 1 to a position to be administered.
In addition, the marking rings 203 are respectively arranged at the proximal end and the distal end inside the balloon unit 1, so that the specific position of the balloon unit 1 at the distal end and the proximal end in the blood vessel can be more clearly known, and accurate administration can be realized.
The inflation device 12 is in communication with the balloon inflation channel.
Injecting fluid into a blood vessel is dangerous and likely to cause death of the patient because after the fluid is injected into the blood vessel, the fluid enters the heart and lung tissues along with the blood circulation, thereby causing infection. In this embodiment, in order to avoid passing liquid into the guidewire tube 202 during the inflation process, so that the liquid enters the blood vessel of the patient, the inflation device 12 needs to connect the balloon inflation channel between the guidewire tube 202 and the fluid inlet tube 201, which can be avoided.
When the balloon is inflated, the outer diameter of the balloon outer wall 101 is expanded, while the inner diameter of the balloon inner wall 102 is kept unchanged.
In this embodiment, in order to ensure that the diameter of the balloon inner wall 102 does not shrink after the balloon filling cavity is pressurized, the balloon inner wall 102 is made of a material with higher hardness, for example, a polyethylene material with higher thickness, so that the donut structure formed by the balloon inner wall 102 and the balloon outer wall 101 is soft at the outer part and hard at the inner part, thereby effectively enhancing the blood flow smoothness during the administration process.
The filling tube unit 2 further comprises a catheter hub 205; wherein:
the conduit seat 205 is disposed on a proximal end of the inlet pipe 201.
In this embodiment, the catheter hub 205 is used for installing the fluid inlet tube 201, and with the fluid inlet tube 201, since the catheter hub 205 is rigid in structure, a clinician can hold the catheter hub 205 by hand and push the fluid inlet tube 201 along the guide wire 11, so that the balloon unit 1 moves to a site to be administered.
The filling tube unit 2 further comprises a hypotube 204; wherein:
the far end of the hypotube 204 is arranged on the end surface of the near end of the liquid inlet pipe 201;
the proximal end of the hypotube 204 is disposed on the catheter hub 205.
In this embodiment, as shown in fig. 2, in the drug balloon device equipped with the hypotube 204, the hypotube 204 is a hollow tube, the inside of the hollow tube has an inner cavity, and the hollow tube can be bent, and is generally made of medical stainless steel material, so as to facilitate the catheter base 205 to push the balloon unit 1, and a liquid inlet channel is further provided on the side surface of the liquid inlet tube 201 for connecting the pressurizing device 12 to perform the pressurizing and depressurizing functions.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various modifications can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. These are non-inventive modifications, which are intended to be protected by patent laws within the scope of the claims appended hereto.

Claims (10)

1. A medicine balloon with a blood flow channel comprises a guide wire (11) and a pressurizing device (12), and is characterized by further comprising a balloon unit (1) and a filling tube unit (2); wherein:
the outer ring surface of the balloon unit (1) is adhered with a medicament, and the medicament is attached to the vessel wall in a pressurizing and expanding mode so as to release the medicament;
the filling tube unit (2) is arranged on the balloon unit (1) and is used for pressurizing the balloon unit (1);
the balloon unit (1) contains a channel for the passage of blood flow;
the guide wire (11) is arranged on the filling tube unit (2) and is used for guiding the balloon unit (1) into a blood vessel.
2. A drug balloon with a blood flow channel according to claim 1, characterized in that the balloon unit (1) comprises a balloon outer wall (101), and a balloon inner wall (102); wherein:
a balloon filling cavity is formed between the inner side surface of the balloon outer wall (101) and the outer side surface of the balloon inner wall (102);
a blood flow channel is formed in the balloon inner wall (102);
the filling tube unit (2) is arranged in the balloon filling cavity and is used for inflating the balloon filling cavity by filling pressure.
3. A drug balloon with a blood flow channel according to claim 2, characterized in that the balloon unit (1) further comprises proximal prongs (103); the filling pipe unit (2) comprises a liquid inlet pipe (201); wherein:
the far end of the liquid inlet pipe (201) is hermetically arranged on the near-end pin (103) and is communicated with the balloon filling cavity;
the proximal end of the liquid inlet pipe (201) is communicated with the liquid filling device (12).
4. A drug balloon with a blood flow channel according to claim 3, characterized in that the balloon unit (1) further comprises a distal pin (104); the filling tube unit (2) further comprises a guide wire tube (202); wherein:
the guide wire tube (202) is inserted into the liquid inlet tube (201) and passes through the balloon filling cavity to be arranged on the distal pin (104);
the guide wire (11) is inserted into the guide wire tube (202);
the inner ring surface of the liquid inlet pipe (201) and the outer ring surface of the guide wire pipe (202) form a balloon filling channel.
5. A drug balloon with blood flow channel according to claim 4, characterized in that the balloon unit (1) further comprises a guide wire seal (105); wherein:
the guide wire seal (105) is arranged on a distal end face of the distal pin (104);
the seal is maintained when the guide wire (11) passes through the guide wire seal (105).
6. A drug balloon with a blood flow channel according to claim 4, characterized in that the filling tube unit (2) further comprises a marker ring (203); wherein:
the marking ring (203) is sleeved on the guide wire tube (202) and is positioned in the balloon filling cavity.
7. A drug balloon having a blood flow passageway according to claim 4, wherein the inflation device (12) is in communication with the balloon inflation passageway.
8. The balloon with blood flow channel according to claim 2, wherein when the balloon inflation lumen is inflated, the outer diameter of the balloon outer wall (101) is expanded, while the inner diameter of the balloon inner wall (102) is kept constant.
9. A drug balloon with a blood flow channel according to claim 2, characterized in that the filling tube unit (2) further comprises a catheter hub (205); wherein:
the conduit seat (205) is disposed on a proximal end of the liquid inlet pipe (201).
10. The drug balloon with a blood flow channel according to claim 9, wherein the filling tube unit (2) further comprises a hypotube (204); wherein:
the far end of the hypotube (204) is arranged on the near end face of the liquid inlet pipe (201);
the proximal end of the hypotube (204) is disposed on the catheter hub (205).
CN202210402443.8A 2022-03-28 2022-04-18 Medicine sacculus with blood flow channel Withdrawn CN114849027A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2022103103339 2022-03-28
CN202210310333 2022-03-28

Publications (1)

Publication Number Publication Date
CN114849027A true CN114849027A (en) 2022-08-05

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CN202210402443.8A Withdrawn CN114849027A (en) 2022-03-28 2022-04-18 Medicine sacculus with blood flow channel

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CN (1) CN114849027A (en)

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Application publication date: 20220805