KR20170040714A - Manufacturing apparatus for baloon catheter - Google Patents
Manufacturing apparatus for baloon catheter Download PDFInfo
- Publication number
- KR20170040714A KR20170040714A KR1020150140044A KR20150140044A KR20170040714A KR 20170040714 A KR20170040714 A KR 20170040714A KR 1020150140044 A KR1020150140044 A KR 1020150140044A KR 20150140044 A KR20150140044 A KR 20150140044A KR 20170040714 A KR20170040714 A KR 20170040714A
- Authority
- KR
- South Korea
- Prior art keywords
- layer
- resin
- resin layer
- braided
- inner liner
- Prior art date
Links
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
- A61M25/1027—Making of balloon catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0009—Making of catheters or other medical or surgical tubes
- A61M25/0012—Making of catheters or other medical or surgical tubes with embedded structures, e.g. coils, braids, meshes, strands or radiopaque coils
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/005—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids
- A61M25/0053—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids having a variable stiffness along the longitudinal axis, e.g. by varying the pitch of the coil or braid
-
- 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
- A61M25/1027—Making of balloon catheters
- A61M25/1036—Making parts for balloon catheter systems, e.g. shafts or distal ends
-
- B29C47/04—
-
- B29C47/12—
-
- B29C47/20—
-
- 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
- A61M2207/00—Methods of manufacture, assembly or production
- A61M2207/10—Device therefor
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Pulmonology (AREA)
- Biophysics (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Child & Adolescent Psychology (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
Description
BACKGROUND OF THE
Coronary artery disease or ischemic heart disease is a condition in which the fat component is deposited on the coronary arterial wall and the accompanying inflammatory reaction leads to a narrowing of the lumen of the coronary artery and a narrowing of the coronary artery It is caused by insufficient blood supply to the heart muscle (myocardium) due to lumen size.
Chest pain, dyspnea, and other symptoms may occur depending on the extent of myocardial infarction. These coronary artery diseases are clinical symptoms such as angina, acute myocardial infarction and sudden death.
In order to open the coronary artery occlusion site, it is necessary to dilate the blood vessel or insert a stent. In this case, the balloon catheter for percutaneous transluminal coronary angioplasty (PTCA) is used to physically expand the blood vessel.
PTCA was performed in 1977 by Andreas Gruenzig for the first time using a balloon catheter to perform vasodilation through balloon dilatation in atherosclerotic lesions, and then about 30,000 procedures were performed in the United States in 1983sus.
In Korea, PTCA was successfully performed for the first time in 1983, and in 2002, 26,169 cases of percutaneous coronary intervention using PTCA balloon catheter including balloon dilatation and stent insertion were performed.
The number of patients with domestic cardiovascular disease increased steadily from about 31,000 in 2006 to 46,000 in 2010, and the number of stent implants is also increasing.
On the other hand, a balloon catheter includes a hub, a balloon extending in the blood vessel, and a shaft having one end connected to the hub and the other end connected to the balloon.
These balloon catheters are inserted into sinusoidal blood vessels and then advance along the vessel until the distal end of the shaft reaches the desired position.
A force is applied to the distal end portion of the shaft when the shaft is advanced. However, the conventional balloon catheter has a problem that it is extremely difficult to properly manipulate the distal end portion of the shaft with the blood vessel deeply inserted.
In other words, the balloon catheter should have a good press-in capability, that is, the ability to transmit the force applied to the shaft from the hub side to the distal end of the shaft, while minimizing or preventing the twisting of the shaft, Should be.
However, the conventional balloon catheter is manufactured by bonding the shaft to the inner liner by adhering the tubes of the multi-layer structure to each other, thereby causing fine jaws in the shaft, thereby deteriorating tracking easiness of guiding the shaft along the blood vessel.
Therefore, efforts are needed to develop a balloon catheter that is easy to press and easy to track.
SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a balloon catheter, in which a shaft having improved hardness and ease of traction can be produced by continuously and simultaneously extruding a resin layer having a different hardness on the outer surface of the inner liner, And a manufacturing method thereof.
According to an aspect of the present invention, there is provided a knitting machine comprising: a braided layer attaching unit for attaching a net-like braided layer to an outer surface of an inner liner; And an outer-layer tube extrusion-molding unit for continuously extruding the outer-layer tube on the outer surface of the braided layer, wherein the outer-layer tube extrusion-molding unit comprises first to third resins for melting and extruding the first, An extruder; And the inner liner to which the braided layer is attached passes through and is connected to the first to third compressors to sequentially attach the first resin layer to the outer surface of the braided layer, And an extrusion nozzle for selectively laminating the second resin layer or the third resin layer successively on the first resin layer or the third resin layer.
Wherein the extrusion nozzle comprises: a nozzle body; A first liner transfer hole formed in a central portion of the nozzle body and through which the inner liner with the braided layer is passed, the first liner transfer hole being provided adjacent to the first liner transfer hole in the nozzle body and communicating with the first extruder A first resin transfer path for forming the first resin layer by extruding the first resin on an outer surface of the braided layer; Wherein the first resin layer is formed on the outer surface of the first resin layer and the second resin is formed on the outer surface of the first resin layer so as to be in contact with the second resin extruder, A second resin transfer path for forming a resin layer; And a second resin transfer path provided adjacent to the nozzle body, wherein the third resin is communicated with the third extruder and the third resin is extruded on the outer surface of the first resin layer to form the first resin layer, And a third resin transfer path for forming a resin layer.
The first resin transfer path may be bent downward so that an end of the first resin transfer path is adjacent to the first liner transfer hole.
The end of the first resin transfer path may be located further inside than the end of the second resin transfer path and the third resin transfer path.
Wherein the outer layer tube extrusion molding unit comprises: an outer layer tube extrusion molding unit which is coupled to the front of the extrusion nozzle, and in which the first resin layer and the second resin layer, or the first resin layer and the third resin layer are continuously attached to the braided layer, And a die having a second liner transfer hole through which the inner liner is passed and which tapers the outer surface of the outer tube by adjusting the diameter of the second liner transfer hole.
Wherein the braided layer attaching unit is made of stainless steel having a diameter of 0.015 to 0.02 mm made of stainless steel containing nickel and chrome and having an inclined angle of 45 degrees or more with respect to the longitudinal direction of the inner liner on the outer surface of the inner liner, The braided layer can be attached to the inner liner.
The outer layer tube has a distal end adjacent to the balloon, a proximal end adjacent to the hub, and an intermediate portion positioned between the proximal end and the proximal end, and the hardness may be increased and the thickness may be increased from the proximal end to the proximal end.
Wherein the extrusion nozzle is formed by continuously forming the first resin layer on the outer surface of the braided layer from the distal end portion to the base end portion and forming the first resin layer on the outer surface of the braided layer in the middle portion, The first resin layer is formed on the outer surface of the first resin layer and the third resin layer is formed on the outer surface of the first resin layer at the base end at the outer surface of the braided layer .
The first to third resin layers may be formed of a polyamide-based polyether block amide (PEBAX) material, and the hardness may be increased from the first resin layer to the third resin layer.
In the embodiment of the present invention, unlike a conventional method in which a multi-layered tube is adhered to the outer surface of a previous inner liner, a resin layer having a different hardness is continuously and extrusion-molded on the outer surface of the inner liner, It is possible to manufacture shafts with improved trackability.
1 is a view of a balloon catheter in accordance with an embodiment of the present invention.
2 is a perspective view illustrating a structure of a shaft according to an embodiment of the present invention.
3 is a view showing a state in which a braided layer and a multi-layered tube are attached to an inner liner according to an embodiment of the present invention.
FIGS. 4A to 4C are cross-sectional views illustrating a distal end portion, a middle portion, and a base end portion of a shaft according to an embodiment of the present invention.
5 is a schematic structural view of an apparatus for manufacturing a balloon catheter according to another embodiment of the present invention.
6 is a cross-sectional view showing an extrusion nozzle according to another embodiment of the present invention.
7A to 7C are views showing a state in which first to third resin layers according to another embodiment of the present invention are attached.
In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.
Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.
FIG. 1 is a perspective view of a balloon catheter according to an embodiment of the present invention. FIG. 2 is a perspective view illustrating a structure of a shaft according to an embodiment of the present invention. FIGS. 4A to 4C are cross-sectional views of a distal end portion, a middle portion, and a base end portion of a shaft according to an embodiment of the present invention. FIG.
Referring to FIG. 1, a
The
The
One end of the
The
2, the
The
The braided
2, the braided
In the present embodiment, the diameter of the
In this embodiment, the
The
1, the
1, 3, and 4, the
Here, the hardness is increased in the order of the
The
4A shows a structure in which the
Here, the first to
An apparatus for manufacturing a balloon catheter for manufacturing the balloon catheter will now be described.
FIG. 5 is a schematic structural view of an apparatus for manufacturing a balloon catheter according to another embodiment of the present invention, FIG. 6 is a sectional view showing an extrusion nozzle according to another embodiment of the present invention, and FIGS. Fig. 5 is a view showing a state in which first to third resin layers according to the embodiment are attached.
5, an
The inner layer tube
As described above, the
The inner layer tube
The
Then, the
The braided
As described above, the
The
In the present embodiment, the diameter of the reinforcing
In this embodiment, the
The
The outer layer tube
As described above, the
To this end, the outer layer tube
The first to third extruders M1 to M3 melt and extrude the first to third resins formed of a polyamide-based polyether block amide (PEBAX) material.
Specifically, the first resin may have PEBAX 4033, the second resin may be PEBAX 6333, and the third resin may be PEBAX 7233.
6, the
The first
The end portion of the first
The ends of the second
An operation of extruding the
7A, when the
When the
7C, when the
As described above, in this embodiment, the
The
The
The diameter of the second
The
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.
100: catheter 110: hub
130: shaft 131: inner liner
131a:
133: braided layer 135: outer layer tube
135a:
135c: third resin layer 150: balloon
200: Manufacturing apparatus 210: Inner layer tube extrusion forming unit
230: braided layer attaching unit 250: outer layer tube extrusion forming unit
251: extrusion nozzle 252: nozzle body
253: first liner feed hole 254: first resin feed path
255: second resin transfer path 256: third resin transfer path
257: second die 258: second liner feed hole
Claims (9)
And an outer layer tube extrusion forming unit for continuously extruding the outer layer tube on the outer surface of the braided layer,
The outer-layer tube extrusion-molding unit comprises:
First to third extruders for melting and extruding first to third resins different from each other; And
The inner liner with the braided layer is passed through and is communicated with the first to third compressors to sequentially attach the first resin layer to the outer surface of the braided layer and to attach the first resin layer to the outer surface of the first resin layer And an extrusion nozzle for selectively laminating the second resin layer or the third resin layer successively.
Wherein the extrusion nozzle comprises:
A nozzle body;
A first liner transfer hole formed at a central portion of the nozzle body and through which the inner liner with the braided layer is passed,
A first resin transfer path provided adjacent to the first liner transfer hole in the nozzle body for communicating with the first extruder and forming the first resin layer by extruding the first resin on the outer surface of the braided layer;
Wherein the first resin layer is formed on the outer surface of the first resin layer and the second resin is formed on the outer surface of the first resin layer so as to be in contact with the second resin extruder, A second resin transfer path for forming a resin layer; And
Wherein the first resin layer is formed on the outer surface of the first resin layer and the third resin is formed on the outer surface of the first resin layer, And a third resin transfer path forming a stratum.
Wherein the first resin transfer path comprises:
Wherein an end of the first resin discharging is bent downwardly so as to be adjacent to the first liner delivery hole.
Wherein an end of the first resin transfer path is located inside the end position of the second resin transfer path and the third resin transfer path.
The outer-layer tube extrusion-molding unit comprises:
Wherein the inner liner having the first resin layer and the second resin layer or the first resin layer and the third resin layer successively attached to the braid layer is passed through the braid layer, Further comprising a die having two liner transfer holes and adjusting the diameter of the second liner transfer hole to taper the outer surface of the outer layer tube.
The braided layer attaching unit includes:
A braid layer having a diameter of 0.015 to 0.02 mm made of stainless steel containing nickel and chromium is formed on the outer surface of the inner liner with a braid layer having an inclination angle of 45 degrees or more with respect to the longitudinal direction of the inner liner, A device for manufacturing a balloon catheter attached to an inner liner.
Wherein the outer layer tube comprises:
A proximal end portion adjacent to the hub side and an intermediate portion positioned between the distal end portion and the proximal end portion,
Wherein the hardness increases and the thickness increases from the distal end to the proximal end.
Wherein the extrusion nozzle comprises:
The first resin layer is formed on the outer surface of the braided layer continuously from the distal end portion to the base end portion, the first resin layer is formed on the outer surface of the braided layer in the intermediate portion, and the outer surface of the first resin layer Wherein the first resin layer is formed on an outer surface of the braided layer at the base end and the third resin layer is formed at an outer surface of the first resin layer, .
The first to third resin layers are formed of a polyamide-based polyether block amide (PEBAX)
Wherein the polyether block amide material has a hardness increasing from the first resin layer to the third resin layer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150140044A KR101727984B1 (en) | 2015-10-05 | 2015-10-05 | Manufacturing apparatus for baloon catheter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150140044A KR101727984B1 (en) | 2015-10-05 | 2015-10-05 | Manufacturing apparatus for baloon catheter |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20170040714A true KR20170040714A (en) | 2017-04-13 |
KR101727984B1 KR101727984B1 (en) | 2017-04-18 |
Family
ID=58580085
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020150140044A KR101727984B1 (en) | 2015-10-05 | 2015-10-05 | Manufacturing apparatus for baloon catheter |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR101727984B1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20050016954A (en) | 2002-07-03 | 2005-02-21 | 오르버스 메디칼 테크놀로지즈 인코포레이티드 | Ballon catheter |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007082802A (en) * | 2005-09-22 | 2007-04-05 | Kaneka Corp | Medical catheter tube |
-
2015
- 2015-10-05 KR KR1020150140044A patent/KR101727984B1/en active IP Right Grant
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20050016954A (en) | 2002-07-03 | 2005-02-21 | 오르버스 메디칼 테크놀로지즈 인코포레이티드 | Ballon catheter |
Also Published As
Publication number | Publication date |
---|---|
KR101727984B1 (en) | 2017-04-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8465469B2 (en) | Reinforced catheter and methods of making | |
US6923788B2 (en) | Catheter having a low-friction guidewire lumen and method of manufacture | |
US5792116A (en) | Catheter having geometrically shaped surface and method of manufacture | |
EP1549377B1 (en) | Extruded tubing with discontinuous striping | |
JP3394327B2 (en) | Tube inner surface treatment method | |
US5647846A (en) | Catheter having geometrically shaped surface and method of manufacture | |
US7273485B2 (en) | Balloon catheter having a shaft with a variable stiffness inner tubular member | |
US6979342B2 (en) | Catheter with a polyimide distal tip | |
US20040059292A1 (en) | Catheter and medical tube | |
JP5596120B2 (en) | catheter | |
EP3189872B1 (en) | Catheter | |
JP2014520594A (en) | Medical tube for catheter | |
US11491304B2 (en) | Extrusion with preferential bend axis | |
CN115154854B (en) | Double-layer medicine carrying balloon catheter | |
KR101727984B1 (en) | Manufacturing apparatus for baloon catheter | |
US10449338B2 (en) | Catheter and method of manufacturing the same | |
KR101833881B1 (en) | Baloon catheter and method for producing the baloon catheter | |
JP7159409B2 (en) | guidewire support catheter | |
US20170157368A1 (en) | Catheter | |
JP2001327603A (en) | Method of manufacturing flexible tube | |
JP6046892B2 (en) | Infusion catheter | |
EP1814623A1 (en) | Complex medical balloons | |
JP5834536B2 (en) | Catheter having tapered structure with different lumen and outer circumference | |
CN111542364A (en) | Catheter and method of manufacturing the same | |
JP5999707B2 (en) | Catheter tube and catheter |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant |