CN-224220562-U - Perfusion balloon dilation catheter with mapping function

CN224220562UCN 224220562 UCN224220562 UCN 224220562UCN-224220562-U

Abstract

The utility model provides a perfusion balloon dilation catheter with a mapping function, which comprises a tube seat, a balloon, a guide shaft assembly and a tip tube, wherein the guide shaft assembly comprises a proximal shaft and a distal shaft, the proximal shaft is a double-cavity shaft, a first cavity and a second cavity which are isolated from each other are arranged in the proximal shaft, the first cavity is communicated with a guide wire interface and a liquid injection interface on the tube seat, a vertically penetrating injection hole is arranged on the side wall of the first cavity far away from the second cavity, the second cavity is communicated with a filling liquid interface on the tube seat, the distal shaft is composed of an inner tube and an outer tube sleeved outside the inner tube, one end part of the inner tube is in sealing connection with an opening of the first cavity, the other end part of the inner tube is in sealing connection with the outer wall of the proximal shaft, the other end part of the outer tube is in communication with the balloon, a plurality of developing rings which are arranged at intervals along a set distance are arranged on the outer wall of the outer tube, so that the expansion and the contraction of the balloon can be realized by utilizing the filling liquid interface, the developing liquid can be injected to a lesion part by utilizing the filling liquid interface, and the length of the lesion part can be measured in real time by the developing rings.

Inventors

WANG YONGGANG
DONG SHUHENG
WANG ZHIGUO
DING YUNYU

Assignees

苏州天鸿盛捷医疗器械有限公司

Dates

Publication Date: 20260512
Application Date: 20250416

Claims (10)

1. The perfusion balloon dilation catheter with the mapping function comprises a tube seat, a balloon, a guide shaft assembly for connecting the tube seat and the balloon, and a tip tube wrapping the end part of the guide shaft assembly penetrating through the balloon and sealing the balloon, and is characterized in that: The guide shaft assembly comprises a proximal shaft close to the tube seat and a distal shaft close to the balloon, the proximal shaft is a double-cavity shaft, a first cavity and a second cavity which are isolated from each other are arranged in the proximal shaft, the first cavity is communicated with a guide wire interface and a liquid injection interface on the tube seat, the first cavity is far away from the side wall of the second cavity, a vertically penetrating injection hole is formed in the side wall of the first cavity, the second cavity is communicated with a filling liquid interface on the tube seat, the distal shaft is formed by an inner tube and an outer tube sleeved outside the inner tube, one end part of the inner tube is in sealing connection with an opening of the first cavity, the other end part of the inner tube is communicated with the tip tube, one end part of the outer tube is in sealing connection with the outer wall of the proximal shaft, the other end part of the outer tube is communicated with the balloon, and a plurality of developing rings which are spaced along a set distance are arranged on the outer wall of the outer tube.
2. The perfusion balloon dilation catheter with mapping function of claim 1 wherein the first lumen is circular in cross-section.
3. The perfusion balloon dilation catheter with mapping function of claim 2 wherein the opening area of the injection hole is 0.8-1.2 times the cross-sectional area of the first lumen.
4. The perfusion balloon dilation catheter with mapping function of claim 2 wherein the cross-section of the second lumen is crescent shaped and the second lumen is wrapped around the outside of the first lumen.
5. The mapping function perfusion balloon dilation catheter of claim 1, wherein the injection holes are disposed proximate to a connection of the outer tube and the proximal shaft.
6. The mapping function perfusion balloon dilation catheter of claim 1, wherein a plurality of the injection holes are provided and a plurality of the injection holes are equidistantly spaced along an axial direction of the proximal shaft.
7. The mapping function perfusion balloon dilation catheter of claim 1, wherein an end of the inner tube that faces the proximal shaft is inserted within and sealingly connected to an opening of the first lumen that faces the distal shaft.
8. The mapping function perfusion balloon dilation catheter of claim 1 wherein an outer wall of the outer tube is flush with and sealingly connected to an outer wall of the proximal shaft.
9. The irrigated balloon dilation catheter with mapping function of claim 7 wherein the outer diameter of the outer tube is smaller than the outer diameter of the proximal shaft and the end of the outer tube toward the proximal shaft is provided with a tapered section that tapers inwardly.
10. The perfusion balloon dilation catheter with mapping function of claim 1, wherein the tube seat is further connected with a T-shaped valve and a one-way valve.

Description

Perfusion balloon dilation catheter with mapping function Technical Field The utility model relates to the technical field of medical instruments, in particular to a perfusion balloon dilation catheter with a mapping function. Background The treatment of vascular stenosis or occlusion is a common vascular disease, about 2 hundred million people suffer from the disease worldwide, minimally invasive surgery such as percutaneous transluminal angioplasty is usually adopted to treat the disease, but the lesion length of blood vessels of many patients is long, multiple times of radiography and multiple times of balloon dilation are matched to completely open the blood vessels, most of the existing balloon dilation catheters only have the function of dilating the balloon and cannot be perfused for radiography, multiple times of catheter exchange is needed during treatment, the operation time is long, the treatment cost is high, meanwhile, a lesion part still possibly has stenosis after balloon dilation, a stent with matched length is needed to be placed for treatment, the existing balloon dilation catheters also have no function of measuring the vascular stenosis length, the approximate length of the lesion blood vessels can be estimated only by using X-ray imaging after the injection of contrast agent, the operation is complex, and the metabolic burden of a large amount of contrast agent on kidneys of patients is large. Disclosure of utility model It is an object of the present utility model to overcome one or more of the disadvantages of the prior art by providing an infusion balloon dilation catheter with mapping function. In order to achieve the aim, the perfusion balloon dilation catheter with the mapping function comprises a tube seat, a balloon, a guide shaft assembly for connecting the tube seat and the balloon, and a tip tube wrapping the guide shaft assembly and penetrating through the end part of the balloon and sealing the balloon; The guide shaft assembly comprises a proximal shaft close to the tube seat and a distal shaft close to the balloon, the proximal shaft is a double-cavity shaft, a first cavity and a second cavity which are isolated from each other are arranged in the proximal shaft, the first cavity is communicated with a guide wire interface and a liquid injection interface on the tube seat, the first cavity is far away from the side wall of the second cavity, a vertically penetrating injection hole is formed in the side wall of the first cavity, the second cavity is communicated with a filling liquid interface on the tube seat, the distal shaft is composed of an inner tube and an outer tube sleeved outside the inner tube, one end part of the inner tube is in sealing connection with an opening of the first cavity, the other end part of the inner tube is communicated with the tip tube, one end part of the outer tube is in sealing connection with an outer wall of the proximal shaft, the other end part of the outer tube is communicated with the balloon, the second cavity is communicated with the balloon through a gap between the outer tube and the outer wall of the balloon, and a plurality of set developing rings are arranged along the set distance. Preferably, the first cavity has a circular cross-section. Further preferably, the opening area of the injection hole is 0.8 to 1.2 times the sectional area of the first cavity. Further preferably, the second cavity has a crescent-shaped cross section, and the second cavity surrounds the outer side of the first cavity. Preferably, the injection hole is provided near a connection of the outer tube and the proximal shaft. Preferably, there are a plurality of the injection holes, and a plurality of the injection holes are equidistantly spaced along the axial direction of the proximal shaft. Preferably, the end of the inner tube facing the proximal shaft is inserted into and sealingly connected with the opening of the first lumen facing the distal shaft. Preferably, the outer wall of the outer tube is flush with and sealingly connected to the outer wall of the proximal shaft. Further preferably, the outer diameter of the outer tube is smaller than the outer diameter of the proximal shaft, and the end of the outer tube facing the proximal shaft is provided with a tapered section gradually tapered inwards. Preferably, the tube seat is also connected with a T-shaped valve and a one-way valve. Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages: The utility model provides a perfusion balloon dilation catheter with a mapping function, which comprises a tube seat, a balloon, a guide shaft assembly and a tip tube, wherein the guide shaft assembly comprises a proximal shaft close to the tube seat and a distal shaft close to the balloon, the proximal shaft is a double-cavity shaft, a first cavity and a second cavity which are isolated from each other are arranged in the proximal shaft, the