CN112043941A - Balloon catheter capable of controlling blood flow blocking amount - Google Patents
Balloon catheter capable of controlling blood flow blocking amount Download PDFInfo
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- CN112043941A CN112043941A CN201910490052.4A CN201910490052A CN112043941A CN 112043941 A CN112043941 A CN 112043941A CN 201910490052 A CN201910490052 A CN 201910490052A CN 112043941 A CN112043941 A CN 112043941A
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- 230000000903 blocking effect Effects 0.000 title claims abstract description 17
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- MGLUJXPJRXTKJM-UHFFFAOYSA-L bismuth subcarbonate Chemical compound O=[Bi]OC(=O)O[Bi]=O MGLUJXPJRXTKJM-UHFFFAOYSA-L 0.000 claims description 15
- 229940036358 bismuth subcarbonate Drugs 0.000 claims description 15
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- 230000001050 lubricating effect Effects 0.000 claims description 12
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- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 claims description 3
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- ZONODCCBXBRQEZ-UHFFFAOYSA-N platinum tungsten Chemical compound [W].[Pt] ZONODCCBXBRQEZ-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- 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
- A61M2025/1079—Balloon catheters with special features or adapted for special applications having radio-opaque markers in the region 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 discloses a balloon catheter capable of controlling blood flow blocking amount, which comprises a balloon catheter body and a guide wire, wherein the balloon catheter body comprises a catheter body, a balloon and a Y-shaped catheter seat, the front end of the guide wire is provided with a head end and a spring ring, the catheter body comprises a flexible far-end section, a balloon section and a rigid pushing shaft section, a first guide wire cavity is arranged in the flexible far-end section, one end of the balloon section close to the rigid pushing shaft section is also provided with a developing mark ring, and a balloon channel and a guide wire channel are arranged in the Y-shaped catheter seat. The invention can adapt to longer operation time, can properly open the vascular access in the operation of blocking aneurysm or blood vessel for a long time, controls blood flow, avoids downstream organ ischemia or metabolic disorder and improves the survival rate of patients. In addition, due to the multi-cavity structure, the guide wire cavity and the sacculus cavity are mutually independent, the position of the catheter and the position of the guide wire can be flexibly adjusted during the filling period of the sacculus, the operation of an operator is facilitated, and the operation time is reduced.
Description
Technical Field
The invention relates to a catheter applied to a surgical operation, in particular to a balloon catheter capable of controlling blood flow blocking amount.
Background
The existing balloon catheter occlusion system is a kit product consisting of a balloon occlusion catheter and a 0.010 inch hydrophilic guide wire. The plugging balloon catheter is a single-cavity conical multifunctional catheter, and the outer layer of the plugging balloon catheter is coated with a hydrophilic coating; the distal end carries a non-releasable, highly compliant balloon inflated by low pressure, with two radiopaque marker bands. The front end of the catheter is provided with an overflow port, and when the overflow port is blocked by the guide wire, the balloon can be inflated. The overflow port is made of a heat-shrinkable polyester elastomer material; the proximal end and the distal end of the catheter are made of modified nylon and polyolefin elastomer materials respectively; the conduit lining is made of polytetrafluoroethylene material; the balloon is made of a heat-shrinkable elastomer material; the proximal and distal radiopaque visualization marker bands are both made of a platinum-iridium alloy material. A 0.010 inch guidewire surface coated with a hydrophilic coating comprised of 304 stainless steel material and an X-ray imaging wire wrap made of platinum tungsten alloy material.
The existing blocking balloon catheter is a single-lumen tube, and the balloon can be filled only when the guide wire completely blocks an overflow port, at the moment (within a long period of time needing blocking), the relative position of the guide wire and the catheter cannot move, otherwise, the balloon fails to fill (loses the blocking effect or the blood vessel supporting effect), or the balloon leaks, redundant contrast agent enters the blood vessel, redundant injury can be caused to a patient, and the operation time can be prolonged; in addition, the conventional occlusion balloon catheter system completely blocks blood flow in a blood vessel during a blood flow blocking period, and when the blood flow is blocked for a long time, long-term ischemia of a tissue near a downstream blood vessel and a blood pressure of an upstream blood vessel are likely to be caused. Both of these conditions can cause iatrogenic complications that are not easily addressed during surgery. The data show that the blood vessel blockage for more than 60min can generate obvious metabolic disturbance and organ damage, and the survival rate for 24h is only 2/3. Accordingly, one skilled in the art provides a balloon catheter with a controlled blood flow interruption amount to solve the problems set forth in the background art described above.
Disclosure of Invention
The present invention is directed to a balloon catheter capable of controlling the amount of blood flow interruption, which solves the above-mentioned problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
a balloon catheter capable of controlling blood flow blocking amount comprises a balloon catheter body and a guide wire, wherein the balloon catheter body comprises a catheter body, a balloon and a Y-shaped catheter seat, the Y-shaped catheter seat is installed at the rear end of the catheter body, the balloon is sleeved at the front of the catheter body, the front end of the guide wire is provided with a head end and a spring ring, and the outer surface of the guide wire is coated with a hydrophilic lubricating coating;
the catheter body consists of a flexible distal section, a balloon section and a rigid pushing shaft section, the flexible distal section, the balloon section and the rigid pushing shaft section are sequentially arranged on the catheter body from the front end to the rear end, a first guidewire cavity is arranged inside the flexible distal section, a balloon cavity and a second guidewire cavity are arranged inside the balloon section, a balloon hole is formed outside the balloon cavity, a blood flow inlet hole and a blood flow outlet hole are formed outside the second guidewire cavity and form a blood passage together with the second guidewire cavity, and the blood flow inlet hole and the blood flow outlet hole are respectively located at the rear end and the front end of the second guidewire cavity;
a developing marker ring is further arranged at one end, close to the rigid pushing shaft section, of the balloon section, the position of the developing marker ring relative to the position of the blood inlet hole is a certain value, a hydrophilic lubricating coating is coated on the outer surface of the tube body, and silicone oil lubricating coatings are coated in the first wire guide cavity and the second wire guide cavity;
the left end and the right end of the balloon are respectively provided with a far-end development marking ring and a near-end development marking ring, and the outer surface of the balloon is coated with a hydrophilic lubricating coating;
a balloon channel and a wire guide channel are arranged in the Y-shaped catheter seat, the wire guide channel is positioned at the lower side of the balloon channel, and a silica gel ring and a cock are arranged outside the wire guide channel.
As a further aspect of the present invention, the material of the flexible distal segment is not limited to polyurethane containing barium sulfate or bismuth subcarbonate (PU, TPU), polyether amide elastomer containing barium sulfate or bismuth subcarbonate (Pebax), low density polyethylene containing barium sulfate or bismuth subcarbonate (LDPE), polyvinyl chloride containing barium sulfate or bismuth subcarbonate (PVC), nylon containing barium sulfate or bismuth subcarbonate (PA), or other thermoplastic elastomers.
As a still further aspect of the present invention, the material of the balloon segment is not limited to polyurethane (PU, TPU), polyether amide elastomer (Pebax), Low Density Polyethylene (LDPE), polyvinyl chloride (PVC), nylon (PA), or other thermoplastic elastomer plastics.
As a still further aspect of the present invention, the material of the rigid pushing shaft section is not limited to the wire-braided reinforced multilayer composite tube or the hypotube, PI tube, and the material of the inner and outer layers of the wire-braided reinforced composite tube is not limited to polyether amide elastomer (Pebax), nylon (PA), Polytetrafluoroethylene (PTFE), or other high-rigidity thermoplastic elastomer.
As still further aspects of the present invention, the materials of the distal developing marker ring, the proximal developing marker ring and the developing marker ring are not limited to stainless steel, pure gold, platinum-iridium alloy, nickel-titanium alloy, and stainless steel processed by gold plating or other metals and alloy materials.
As a further scheme of the present invention, the material of the balloon is latex, or modified polyurethane (TPU), high elasticity polyolefin (TPE) or other thermoplastic plastics, and the compliance of the balloon can reach 6 to 10.
As a still further aspect of the present invention, the material of the Y-shaped catheter hub is not limited to Polycarbonate (PC), Acrylonitrile Butadiene Styrene (ABS), Polyoxymethylene (POM), polypropylene (PP) and alloy plastics thereof.
As a still further aspect of the present invention, the material of the guide wire is not limited to stainless steel, nitinol, and gold-plated stainless steel or other metals and alloy materials, and the coating of the guide wire may be an ultra-thin PTFE outer layer.
As a further scheme of the invention, the silica gel ring can be made of silica gel or rubber.
Compared with the prior art, the invention has the beneficial effects that:
1. the balloon catheter of the invention increases the flexibility of the balloon during filling, namely the balloon can be filled or released without being influenced by the position of the guide wire, thereby increasing the safety during operation, and meanwhile, an operator can adjust the position of the balloon in the blood vessel or the position of the guide wire at any time according to the filling condition of the balloon, thereby greatly improving the flexibility of the operation and adapting to the more complicated blood vessel condition and aneurysm plugging at the complicated position.
2. The balloon catheter of the invention realizes the control of blocking blood flow, and slowly and gradually reduces the blood flow in the target blood vessel before completely blocking the blood flow so as to increase the reaction time of the adjustment of the human blood flow dynamic mechanism; on the other hand, in a long-term operation, organ damage due to ischemia in the body is reduced, and when it is necessary to release the blocked blood flow to a certain extent, the amount of release of the blood flow can be adjusted as needed according to actual circumstances.
3. The balloon catheter can realize smaller vascular injury, the head end of the balloon catheter and the head end of the guide wire are soft, fine and pre-shaped, the injury to blood vessels is small, and the balloon catheter has stronger adaptability to target blood vessels, particularly complex aneurysms at the bifurcation part of the blood vessels.
4. The invention can adapt to longer operation time, can properly open the vascular access in the operation of blocking aneurysm or blood vessel for a long time, controls blood flow, avoids downstream organ ischemia or metabolic disorder and improves the survival rate of patients. In addition, due to the multi-cavity structure, the guide wire cavity and the sacculus cavity are mutually independent, the position of the catheter and the position of the guide wire can be flexibly adjusted during the filling period of the sacculus, the operation of an operator is facilitated, and the operation time is reduced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of a second embodiment of the blood flow inlet and outlet ports of the present invention.
Fig. 3 is a first schematic view of a guide wire in the guide wire cavity.
Fig. 4 is a second schematic view of the guide wire in the guide wire cavity of the invention.
Fig. 5 is a schematic structural diagram of the present invention, which is taken as an example of the occlusion of an aneurysm at an intracranial complex site.
In the figure: 1-a pipe body; 11-a flexible distal section; 111-guidewire lumen one; 12-a balloon segment; 121-balloon orifice; 122-blood flow exit orifice; 123-a blood flow inlet aperture; 124-developing the marker ring; 13-rigid pushing shaft section; 14-the balloon cavity; 15-guide wire cavity II; 2-a balloon; 21-distal visualization marker ring; 22-proximal visualization marker ring; 3-Y type conduit seat; 31-balloon channel; 32-a cock; 33-silica gel ring; 34-a guide wire channel; 4-guiding the guide wire; 41-a head end; 42-coil spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, in the embodiment of the present invention, a balloon catheter capable of controlling blood flow blockage amount includes a balloon catheter body and a guide wire 4, the balloon catheter body is composed of a multi-section multi-cavity gradually-changed tube body 1, a super-compliance low-pressure filling balloon 2, and a Y-shaped catheter seat 3 capable of adjusting sealing degree, the Y-shaped catheter seat 3 is installed at the rear end of the tube body 1, the balloon 2 is sleeved on the front portion of the tube body 1, a head end 41 with enhanced development effect and a spring ring 42 for increasing flexibility of the front end of the guide wire are arranged at the front end of the guide wire 4, the head end 41 has a certain pre-shaping function suitable for the trend of blood vessels, and a hydrophilic lubricating coating is coated;
the multi-section gradient multi-cavity tube body 1 is composed of a flexible far-end section 11, a balloon section 12 and a rigid pushing shaft section 13, the flexible far-end section 11, the balloon section 12 and the rigid pushing shaft section 13 are sequentially arranged on the tube body 1 from the front end to the rear end, a first guidewire cavity 111 is arranged inside the flexible far-end section 11, a balloon cavity 14 and a second guidewire cavity 15 are arranged inside the balloon section 12, a balloon hole 121 is formed outside the balloon cavity 14 to realize communication between the balloon 2 and the balloon cavity 14, a blood flow inlet hole 123 and a blood flow outlet hole 122 are arranged outside the second guidewire cavity 15 to form a blood passage together with the second guidewire cavity 15, and the blood flow inlet hole 123 and the blood flow outlet hole 122 are respectively located at the rear end and the front end of the second guidewire cavity 15;
a developing mark ring 124 is further arranged at one end, close to the rigid pushing shaft section 13, of the balloon section 12, the position of the developing mark ring 124 is a certain value relative to the position of the blood flow inlet hole 123, the flexible distal section 11 is pre-shaped to adapt to the trend of a blood vessel, a hydrophilic lubricating coating is coated on the outer surface of the tube body 1, and silicone oil lubricating coatings are coated in the first guide wire cavity 111 and the second guide wire cavity 15;
the left end and the right end of the super-compliance low-pressure filling balloon 2 are respectively provided with a far-end development marking ring 21 and a near-end development marking ring 22, and the outer surface of the balloon 2 is coated with a hydrophilic lubricating coating;
a balloon channel 31 and a guide wire channel 34 are arranged in the Y-shaped catheter seat 3 with adjustable sealing degree, the guide wire channel 34 is located on the lower side of the balloon channel 31, a silica gel ring 33 and a cock 32 are arranged outside the guide wire channel 34, the silica gel ring 33 is made of silica gel or rubber, the cock 32 can be rotated to control the tightness of the silica gel ring 33, the minimum inner diameter of the guide wire channel 34 is adjusted, and the minimum inner diameter is used for controlling the movement amount of the relative position of a guide wire and the balloon catheter or sealing the whole guide wire channel 34.
The material of the flexible distal segment 11 is not limited to polyurethane containing barium sulfate or bismuth subcarbonate (PU, TPU), polyetheramide elastomer containing barium sulfate or bismuth subcarbonate (Pebax), low density polyethylene containing barium sulfate or bismuth subcarbonate (LDPE), polyvinyl chloride containing barium sulfate or bismuth subcarbonate (PVC), nylon containing barium sulfate or bismuth subcarbonate (PA), or other thermoplastic elastomers.
The material of the balloon segment 12 is not limited to polyurethane (PU, TPU), polyether amide elastomer (Pebax), Low Density Polyethylene (LDPE), polyvinyl chloride (PVC), nylon (PA), or other thermoplastic elastomers.
The material of the rigid pushing shaft section 13 is not limited to a metal wire braided reinforced multilayer composite pipe or a hypotube or a PI pipe, and the material of the inner layer and the outer layer of the metal wire braided reinforced composite pipe is not limited to polyether amide elastomer (Pebax), nylon (PA), Polytetrafluoroethylene (PTFE) or other high-rigidity thermoplastic elastomers.
The materials of the distal visualization marker ring 21, the proximal visualization marker ring 22 and the visualization marker ring 124 are not limited to stainless steel, pure gold, platinum-iridium alloy, nickel-titanium alloy, and stainless steel processed by gold plating or other metals and alloy materials.
The material of the saccule 2 is latex, and can also be modified polyurethane (TPU), high-elasticity polyolefin (TPE) or other thermoplastic plastics, and the compliance of the saccule 2 can reach 6-10.
The material of the Y-shaped catheter hub 3 is not limited to Polycarbonate (PC), Acrylonitrile Butadiene Styrene (ABS), Polyoxymethylene (POM), polypropylene (PP), and alloy plastics thereof.
The material of the guide wire 4 is not limited to stainless steel, nitinol, and gold-plated stainless steel or other metals and alloy materials, and the coating of the guide wire 4 may be an ultra-thin PTFE outer layer.
Referring to fig. 2, fig. 2 shows a second embodiment of the blood flow inlet opening 123 and the blood flow outlet opening 122 of the present invention, wherein the blood flow inlet opening 123 and the blood flow outlet opening 122 are configured as slots, i.e., dense holes, and the holes communicate with the holes to form a completely open area, i.e., a slot is formed in the guidewire lumen, so that blood enters the guidewire lumen through the slot-shaped opening.
In addition, the outer diameter of the guide wire 4 can be set to be gradually changed, or the inner diameters of the guide wire cavity I111 and the guide wire cavity II 15 can be set to be gradually changed, or the guide wire and the guide wire cavity are in clearance fit, so that the blood flow entering the clearance can be controlled, and the blood flow can be controlled immediately.
The use of the balloon catheter of the present invention is described in detail below, taking the occlusion of an aneurysm at a complex site within the cranium as an example (as shown in fig. 5).
Firstly, after a guide wire 4 enters a target branch vessel, a balloon catheter penetrates the guide wire into a guide wire cavity of the catheter from the tail part of the guide wire 4, smoothly reaches the branch vessel along the path of the guide wire 4, positions of a far-end development marking ring 21 and a near-end development marking ring 22 at two ends of the balloon 2 are observed under the guidance of X-ray equipment, the balloon 2 of the balloon catheter is adjusted to a proper position, a tail-end cock 34 is screwed, the position of the balloon catheter is fixed, and the balloon 2 is filled through a balloon channel 31 of a Y-shaped catheter seat 3, so that the effect of blocking the vessel is achieved;
when blood flow needs to be released, the cock 34 is unscrewed, the guide wire 4 is withdrawn, under the guidance of the X-ray device, after the position of the head end 41 of the guide wire 4 is observed to the development mark ring 124 (see fig. 3 for details), blood can enter the blood flow inlet hole 123, pass through the second guide wire cavity 15, and flow out from the blood flow outlet hole 122 to reach a branch blood vessel, a blood channel can be formed, further, the position of the head end 41 of the guide wire 4 is controlled to be located at different positions of the blood flow inlet hole 122, so that blood flow entering the blood flow inlet hole 122 can be controlled, and when the head end 41 of the guide wire 4 is farther away from the development mark ring 124, the blood flow entering the inlet hole is less; as the tip 41 of the guide wire 4 moves further away from the visualization marker ring 124, more blood flow enters the entry hole;
further, controlling the position of the tip 41 of the guide wire 4 to be in different regions of the blood flow entry orifice 123 controls the flow of blood into the entry orifice. As the tip 41 of the guide wire 4 moves farther away from the visualization marker ring 124, less blood flow enters the blood flow inlet hole 123; as the tip 41 of the guide wire 4 moves farther away from the visualization marker ring 124, the more blood flow enters the blood inlet hole 123, and as shown in fig. 4, the blood flow can be controlled to be half of the maximum amount.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A balloon catheter capable of controlling blood flow blocking amount comprises a balloon catheter body and a guide wire (4), and is characterized in that the balloon catheter body consists of a catheter body (1), a balloon (2) and a Y-shaped catheter seat (3), the Y-shaped catheter seat (3) is installed at the rear end of the catheter body (1), the balloon (2) is sleeved on the front portion of the catheter body (1), the front end of the guide wire (4) is provided with a head end (41) and a spring ring (42), and the outer surface of the guide wire (4) is coated with a hydrophilic lubricating coating;
the catheter body (1) is composed of a flexible distal section (11), a balloon section (12) and a rigid pushing shaft section (13), the flexible distal section (11), the balloon section (12) and the rigid pushing shaft section (13) are sequentially arranged on the catheter body (1) from the front end to the rear end, a first guidewire cavity (111) is arranged inside the flexible distal section (11), the balloon section (12) internally comprises a balloon cavity (14) and a second guidewire cavity (15), a balloon hole (121) is formed outside the balloon cavity (14), a blood flow inlet hole (123) and a blood flow outlet hole (122) are formed outside the second guidewire cavity (15) and form a blood passage together with the second guidewire cavity (15), and the blood flow inlet hole (123) and the blood flow outlet hole (122) are respectively located at the rear end and the front end of the second guidewire cavity (15);
one end of the balloon section (12) close to the rigid pushing shaft section (13) is also provided with a developing mark ring (124), the position of the developing mark ring (124) and the relative position of the blood flow inlet hole (123) are a certain value, the outer surface of the tube body (1) is coated with a hydrophilic lubricating coating, and silicone oil lubricating coatings are coated in the guide wire cavity I (111) and the guide wire cavity II (15);
the left end and the right end of the balloon (2) are respectively provided with a far-end development marking ring (21) and a near-end development marking ring (22), and the outer surface of the balloon (2) is coated with a hydrophilic lubricating coating;
a balloon channel (31) and a guide wire channel (34) are arranged in the Y-shaped catheter seat (3), the guide wire channel (34) is positioned on the lower side of the balloon channel (31), and a silica gel ring (33) and a cock (32) are arranged outside the guide wire channel (34).
2. A controlled blood flow occlusion balloon catheter as in claim 1, wherein the material of the flexible distal section (11) is not limited to polyurethane containing barium sulfate or bismuth subcarbonate (PU, TPU), polyetheramide elastomer containing barium sulfate or bismuth subcarbonate (Pebax), low density polyethylene containing barium sulfate or bismuth subcarbonate (LDPE), polyvinyl chloride containing barium sulfate or bismuth subcarbonate (PVC), nylon containing barium sulfate or bismuth subcarbonate (PA), or other thermoplastic elastomers.
3. A controlled amount of blood flow occlusion balloon catheter as in claim 1, wherein the material of the balloon segment (12) is not limited to polyurethane (PU, TPU), polyetheramide elastomer (Pebax), Low Density Polyethylene (LDPE), polyvinyl chloride (PVC), nylon (PA) or other thermoplastic elastomers.
4. The balloon catheter of claim 1, wherein the material of the rigid pushing shaft section (13) is not limited to a wire braided reinforced multilayer composite tube or hypotube, PI tube, and the material of the inner and outer layers of the wire braided reinforced composite tube is not limited to polyether amide elastomer (Pebax), nylon (PA), Polytetrafluoroethylene (PTFE) or other high rigidity thermoplastic elastomer.
5. The balloon catheter of claim 1, wherein the distal visualization marker ring (21), the proximal visualization marker ring (22) and the visualization marker ring (124) are made of materials not limited to stainless steel, pure gold, platinum-iridium alloy, nickel-titanium alloy, and gold-plated stainless steel or other metals and alloys.
6. The balloon catheter with the controllable blood flow blocking amount according to claim 1, wherein the balloon (2) is made of latex, modified polyurethane (TPU), high-elasticity polyolefin (TPE) or other thermoplastic plastics, and the compliance of the balloon (2) can reach 6-10.
7. The balloon catheter of claim 1, wherein the material of the Y-shaped catheter holder (3) is not limited to Polycarbonate (PC), Acrylonitrile Butadiene Styrene (ABS), Polyoxymethylene (POM), polypropylene (PP) and alloy plastics thereof.
8. The balloon catheter of claim 1, wherein the material of the guide wire (4) is not limited to stainless steel, nitinol, and gold-plated stainless steel or other metal and alloy materials, and the coating of the guide wire (4) may be an ultra-thin PTFE outer layer.
9. The balloon catheter capable of controlling the blood flow blocking amount according to claim 1, wherein the silicone ring (33) is made of silicone or rubber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910490052.4A CN112043941A (en) | 2019-06-06 | 2019-06-06 | Balloon catheter capable of controlling blood flow blocking amount |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910490052.4A CN112043941A (en) | 2019-06-06 | 2019-06-06 | Balloon catheter capable of controlling blood flow blocking amount |
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| CN112043941A true CN112043941A (en) | 2020-12-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114680990A (en) * | 2022-01-27 | 2022-07-01 | 上海心玮医疗科技股份有限公司 | Intracranial plugging balloon catheter |
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2019
- 2019-06-06 CN CN201910490052.4A patent/CN112043941A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114680990A (en) * | 2022-01-27 | 2022-07-01 | 上海心玮医疗科技股份有限公司 | Intracranial plugging balloon catheter |
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