CN107693923B - Manufacturing die of silicone rubber double-cavity anti-blocking catheter - Google Patents
Manufacturing die of silicone rubber double-cavity anti-blocking catheter Download PDFInfo
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- CN107693923B CN107693923B CN201711095566.7A CN201711095566A CN107693923B CN 107693923 B CN107693923 B CN 107693923B CN 201711095566 A CN201711095566 A CN 201711095566A CN 107693923 B CN107693923 B CN 107693923B
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- outer bag
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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
- A61M25/1011—Multiple 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/84—Drainage tubes; Aspiration tips
-
- 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
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
-
- 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
- A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
- A61M25/0068—Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
-
- 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
- A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
- A61M25/0074—Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable
-
- 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
- A61M25/10—Balloon catheters
- A61M25/1027—Making of balloon catheters
- A61M25/1029—Production methods of the balloon members, e.g. blow-moulding, extruding, deposition or by wrapping a plurality of layers of balloon material around a mandril
-
- 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
-
- 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
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
- A61M2025/0024—Expandable catheters or sheaths
-
- 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
- A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
- A61M25/0074—Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable
- A61M25/0075—Valve means
- A61M2025/0076—Unidirectional valves
-
- 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
Abstract
The invention discloses a manufacturing die of a silicone rubber double-cavity anti-blocking catheter, which comprises a double-cavity catheter die body; the method is characterized in that: the double-cavity catheter die body comprises an inner bag injection die, an outer bag die and a fish mouth plug die, wherein the fish mouth plug die is provided with an upper die and a lower die, a cavity die core is arranged at the joint of the upper die and the lower die, and a groove is formed at the contact part of the upper end of the die core and the upper die. The invention aims to provide a manufacturing process of a silicone rubber product, which aims at the defects in the prior art, the process realizes the function of opening through the action of double bags, and the produced product can be closed or opened.
Description
Technical Field
The invention relates to the technical field of silicone rubber production methods, in particular to a manufacturing die of a silicone rubber double-cavity anti-blocking catheter, and particularly relates to a production and manufacturing method of a silicone rubber product with a complex process.
Background
At present, most of the existing silicone rubber double-cavity catheters are single saccule and have a drainage side hole at the front end. The process is mostly completed by adopting the traditional processes of mould pressing vulcanization, extrusion vulcanization, sealing head, bonding and the like. In the current catheter drainage process, drainage holes are easy to be blocked, so that drainage is not smooth, and medical accidents are caused. The anti-blocking catheter is designed at the front end opening of the catheter, so that the defect of poor drainage can be effectively prevented. The production and processing of the product with the front end opening of the catheter and the related production mould and production process are key technologies of the invention.
Disclosure of Invention
The invention aims to solve the technical problem that in the process of draining a patient, a drainage hole is easy to be blocked, so that drainage is not smooth, and medical accidents are caused. The anti-blocking catheter is designed at the front end opening of the catheter, so that the defect of poor drainage can be effectively prevented, and the production and processing of products at the front end opening of the catheter, the related production mould and the production process are key technologies of the invention.
In order to solve the technical problems, the invention adopts the following technical means:
a manufacturing die of a silicone rubber double-cavity anti-blocking catheter comprises a double-cavity catheter die body; the method is characterized in that: the double-cavity catheter die body comprises an inner bag injection die, an outer bag die and a fish mouth plug die, wherein the fish mouth plug die is provided with an upper die and a lower die, a cavity die core is arranged at the joint of the upper die and the lower die, and a groove is formed at the contact part of the upper end of the die core and the upper die.
Preferably, the invention further adopts the technical scheme that:
the lower end of the inner bag injection molding die is provided with a bottom die, a middle die is arranged above the bottom die, an injection bin is arranged above the middle die, an injection bin gland is arranged above the injection bin, a groove is formed in the injection bin gland, a protrusion is arranged on the injection bin gland, and the shape and the size of the protrusion of the groove on the injection bin and the protrusion of the injection bin gland are mutually matched.
The outer bag mold is formed by an outer bag upper mold and an outer bag lower mold, a cavity is arranged at the joint of the outer bag upper mold and the outer bag lower mold, the cavity is a molded side hole core, and a side hole is formed in the molded side hole core.
The double-cavity catheter die body is provided with a main tube die.
The manufacturing process of the silicone rubber double-cavity anti-blocking catheter is characterized by comprising the following steps of:
step 1: processing an inner bag, vulcanizing and forming an inner bag layer by using a vulcanizing press and a special silicone rubber raw material for the SR330 and 30-degree air bag through an inner bag vulcanizing mold; designing and processing a injection-type inner bag vulcanizing mold (see fig. 1), wherein the scheme ensures that the wall thickness of a product is uniform, so that the inner bag is uniformly expanded and is not eccentric during water injection;
step 2: processing an outer bag, and vulcanizing and forming the outer bag into an outer bag layer by using a flat vulcanizing machine and a 55-degree silica gel raw material through an outer bag mold; designing and processing an outer bag vulcanizing mold (see fig. 2), designing the shape of an opening at the side of the outer bag, and integrally forming the outer bag to solve the problem of uneven side hole punching;
step 3: processing a fish-mouth type plug, using a flat vulcanizing machine through a mold of the fish-mouth type plug, and using 50-degree silicon rubber for vulcanization molding to form a fish-mouth type plug pipe; designing and processing a groove-type plug vulcanization mold (see fig. 3), wherein the groove-type plug is easier to cling to the inner wall of a tube cavity in the bonding process, is firmly bonded and is not easy to leak air;
step 4: bonding the fish-mouth type plug obtained in the step 3 with the main pipe body;
step 5: bonding the inner bag layer obtained in the step 1 to the main pipe body;
step 6: punching a hole on one side of the outer bag layer obtained in the step 2, bonding the outer bag layer to the outer bag layer, so that the outer bag is pulled when the inner bag is opened, and simultaneously, the fish-mouth type plug is opened to achieve the purpose of opening (see figure 5);
step 7: and (3) cutting the fish-mouth type plug pipe obtained in the step (3) from the fish-mouth opening line.
The silicone rubber double-cavity anti-blocking catheter is characterized in that: the silicone rubber double-cavity anti-blocking catheter comprises a main tube body, wherein a main interface and an auxiliary interface are arranged on one side of the main tube body, the main interface is a silica gel double-cavity horn mouth interface, the auxiliary interface is an installation one-way valve interface, the other side of the main tube body is connected with a fish-mouth type plug tube, an opening is formed in the fish-mouth position of the top end of the fish-mouth type plug tube, and a double-air-bag is arranged at the joint of the fish-mouth type plug tube and the main tube body.
The double-airbag comprises an inner airbag and an outer airbag, wherein the inner airbag is adhered to the joint of the fish-mouth type plug pipe and the main pipe body, a hole is formed in one side of the outer airbag, the inner airbag is wrapped by the outer airbag, the outer airbag is pulled when the inner airbag is opened, and meanwhile the fish-mouth type plug is opened, so that the purpose of opening is achieved.
The invention aims to provide a manufacturing process of a silicone rubber product, which aims at the defects in the prior art, the process realizes the function of opening through the action of double bags, and the produced product can be closed or opened.
Drawings
Fig. 1 is a schematic structural view of an inner bag injection mold of the present invention.
Fig. 2 is a schematic view of the structure of the outer bag mold of the present invention.
Fig. 3 is a schematic diagram of a mold structure of a fish mouth plug according to the present invention.
Fig. 4 is a schematic structural view of the silicone rubber dual-cavity anti-blocking catheter of the present invention in a closed state.
Fig. 5 is a schematic structural view of the silicone rubber dual-cavity anti-blocking catheter of the present invention in an open state.
Fig. 6 is a block diagram of a process for manufacturing a silicone rubber dual-cavity anti-blocking catheter according to the present invention.
Reference numerals illustrate: 1-an inner bag injection mold; 2-a bottom die; 3-middle mold; 4-a material injection bin; 5-gland of the material injection bin; 6-an outer bag mold; 7-an outer bag upper die; 8-an outer bag lower die; 9-forming a side hole core; 10-side holes; 11-a fish mouth plug die; 12-upper die; 13-lower die; 14-a mold core; 15-grooves; 16-main tube body; 17-installing a one-way valve interface; 18-a silica gel double-cavity horn mouth interface; 19-double air bags; 20-opening; 21-a fish-mouth type plug pipe; 22-inner capsule; 23-outer capsule.
Detailed Description
The invention will be further illustrated with reference to the following examples.
Specific example 1:
referring to fig. 1, 2 and 3, the manufacturing die of the silicone rubber double-cavity anti-blocking catheter comprises a double-cavity catheter die body; the method is characterized in that: the double-cavity catheter die body comprises an inner bag injection die 1, an outer bag die 6 and a fish mouth plug die 11, wherein the fish mouth plug die 11 is formed by combining an upper die 12 and a lower die 13, a cavity die core 14 is arranged at the joint of the upper die 12 and the lower die 13, a groove 15 is formed at the contact of the upper end of the die core 14 and the upper die 12, a bottom die 2 is arranged at the lower end of the inner bag injection die 1, a middle die 3 is arranged above the bottom die 2, an injection bin 4 is arranged above the middle die 3, an injection bin gland 5 is arranged above the injection bin 4, a groove 15 is formed on the injection bin gland 5, the protrusion shapes and sizes of the groove on the injection bin 4 and the injection bin gland 5 are mutually matched, the outer bag die 6 is formed by combining an outer bag upper die 7 and an outer bag lower die 8, a cavity is formed at the joint of the outer bag upper die 7 and the outer bag lower die 8, a forming side hole core 9 is formed in the cavity, a side hole 10 is formed in the forming side hole 9, and a main pipe die is arranged on the double-cavity catheter die body.
Specific example 2:
as can be seen from the reference to FIG. 6, the manufacturing process of the silicone rubber double-cavity anti-blocking catheter comprises the following steps:
step 1: processing the inner bag 22, vulcanizing and forming an inner bag layer by using a vulcanizing press and a special silicone rubber raw material for the SR330 and 30-degree air bags through an inner bag vulcanizing mold;
step 2: processing an outer bag 23, and vulcanizing and forming a 55-degree silica gel raw material into an outer bag layer by using a flat vulcanizing machine through an outer bag die 6;
step 3: processing a fish-mouth type plug, vulcanizing and forming by using 50-degree silicon rubber through a mold of the fish-mouth type plug by using a flat vulcanizing machine to form a fish-mouth type plug pipe 21;
step 4: bonding the fish-mouth plug obtained in the step 3 with the main pipe body 16;
step 5: bonding the inner bladder layer obtained in step 1 to the main tubular body 16;
step 6: b, punching a hole on one side of the outer bag layer obtained in the step 2, bonding the outer bag layer to the outer bag layer, so that the outer bag is pulled when the inner bag is opened, and simultaneously, the fish-mouth type plug is opened to achieve the purpose of opening;
step 7: the fish-mouth plug tube 21 obtained in step 3 is cut from the fish-mouth opening line.
The specific operation flow is as follows:
first: compression molding, vulcanization molding and main pipe bonding of the inner bag;
second,: compression molding and vulcanization molding the fish-mouth type plug, and bonding the main pipe of the inner bag;
third,: compression molding, vulcanization molding, side hole punching, and bonding with the prepared first and second main pipes;
fourth,: after the steps are finished, cutting the fish mouth type plug from the fish mouth opening line;
finally: and (5) checking a finished product.
Specific example 3:
referring to fig. 4 and 5, the silicone rubber dual-cavity anti-blocking catheter of the invention comprises a main tube body 16, wherein one side of the main tube body 16 is provided with a main interface and an auxiliary interface, the main interface is a silicone dual-cavity horn mouth interface 18, the auxiliary interface is provided with a one-way valve interface 17, the other side of the main tube body 16 is connected with a fish mouth type plug tube 21, the fish mouth type plug tube 21 is provided with an opening 20 at the top end fish mouth position, the joint of the fish mouth type plug tube 21 and the main tube body 16 is provided with a dual-air bag 19, the dual-air bag 19 comprises an inner bag 22 and an outer bag 23, the inner bag 22 is adhered at the joint of the fish mouth type plug tube 21 and the main tube body 16, the outer bag 23 is provided with a butt hole at one side, the outer bag 23 wraps the inner bag 22, the outer bag 23 is pulled conveniently when the inner bag 22 is opened, and the fish mouth type plug is opened, so that the purpose of opening is achieved.
Since the above description is only specific embodiments of the present invention, the protection of the present invention is not limited thereto, and any equivalent changes or substitutions of technical features of the present invention will be apparent to those skilled in the art, and are included in the scope of the present invention.
Claims (3)
1. A manufacturing die of a silicone rubber double-cavity anti-blocking catheter comprises a double-cavity catheter die body; the method is characterized in that: the double-cavity catheter die body comprises an inner bag injection die, an outer bag die and a fish mouth plug die, wherein the fish mouth plug die is formed by an upper die and a lower die, a cavity die core is arranged at the joint of the upper die and the lower die, and a groove is formed at the contact part of the upper end of the die core and the upper die; the lower end of the inner bag injection molding die is provided with a bottom die, a middle die is arranged above the bottom die, an injection bin is arranged above the middle die, an injection bin gland is arranged above the injection bin, a groove is formed in the injection bin gland, a bulge is formed on the injection bin gland, and the shape and the size of the groove on the injection bin are matched with those of the bulge of the injection bin gland; the outer bag mold is formed by an outer bag upper mold and an outer bag lower mold, a cavity is arranged at the joint of the outer bag upper mold and the outer bag lower mold, the cavity is a molded side hole core, and a side hole is formed in the molded side hole core; the double-cavity catheter die body is provided with a main tube die; the manufacturing process of the silicone rubber double-cavity anti-blocking catheter comprises the following steps:
step 1: processing an inner bag, namely vulcanizing and forming an inner bag layer by using an inner bag injection mold, a vulcanizing press and SR330 and 30-degree air bag rubber raw materials;
step 2: processing an outer bag, and vulcanizing and forming a 55-degree silica gel raw material into an outer bag layer by an outer bag mold through a flat vulcanizing machine;
step 3: processing a fish-mouth type plug, using a flat vulcanizing machine through a mold of the fish-mouth type plug, and using 50-degree silicon rubber for vulcanization molding to form a fish-mouth type plug pipe;
step 4: bonding the fish-mouth type plug pipe obtained in the step 3 with the main pipe body;
step 5: bonding the inner bag layer obtained in the step 1 to the main pipe body;
step 6: b, punching a hole on one side of the outer bag layer obtained in the step 2, bonding the outer bag layer to the outer bag layer, so that the outer bag is pulled when the inner bag is opened, and simultaneously, the fish-mouth type plug is opened to achieve the purpose of opening;
step 7: and (3) cutting the fish-mouth type plug pipe obtained in the step (3) from the fish-mouth opening line.
2. A silicone rubber double-cavity anti-blocking catheter manufactured by the manufacturing die of the silicone rubber double-cavity anti-blocking catheter according to claim 1, which is characterized in that: the silicone rubber double-cavity anti-blocking catheter comprises a main tube body, wherein a main interface and an auxiliary interface are arranged on one side of the main tube body, the main interface is a silica gel double-cavity horn mouth interface, the auxiliary interface is an installation one-way valve interface, the other side of the main tube body is connected with a fish-mouth type plug tube, an opening is formed in the fish-mouth position of the top end of the fish-mouth type plug tube, and a double-air-bag is arranged at the joint of the fish-mouth type plug tube and the main tube body.
3. The silicone rubber dual-lumen anti-blocking catheter of claim 2, wherein: the double-airbag comprises an inner airbag and an outer airbag, wherein the inner airbag is adhered to the joint of the fish-mouth type plug pipe and the main pipe body, a hole is formed in one side of the outer airbag, the inner airbag is wrapped by the outer airbag, the outer airbag is pulled when the inner airbag is opened, and meanwhile the fish-mouth type plug is opened, so that the purpose of opening is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711095566.7A CN107693923B (en) | 2017-11-09 | 2017-11-09 | Manufacturing die of silicone rubber double-cavity anti-blocking catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711095566.7A CN107693923B (en) | 2017-11-09 | 2017-11-09 | Manufacturing die of silicone rubber double-cavity anti-blocking catheter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107693923A CN107693923A (en) | 2018-02-16 |
| CN107693923B true CN107693923B (en) | 2023-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711095566.7A Active CN107693923B (en) | 2017-11-09 | 2017-11-09 | Manufacturing die of silicone rubber double-cavity anti-blocking catheter |
Country Status (1)
| Country | Link |
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| CN (1) | CN107693923B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111070504B (en) * | 2019-12-24 | 2021-09-28 | 广东亿康医疗器械有限公司 | Preparation method of latex catheter mold |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0492674A (en) * | 1990-08-07 | 1992-03-25 | Fuji Syst Kk | Production of balloon catheter |
| JPH04174663A (en) * | 1990-11-07 | 1992-06-22 | Fuji Syst Kk | Manufacture of medical tube |
| WO2010090671A2 (en) * | 2009-01-20 | 2010-08-12 | Hollister Incorporated | Urinary catheter |
| JP2012213981A (en) * | 2011-04-01 | 2012-11-08 | Sumitomo Rubber Ind Ltd | Method for producing bladder |
| WO2015010391A1 (en) * | 2013-07-24 | 2015-01-29 | Wang Liang | Contact-limiting side balloon double-hole urinary catheter |
| JP2016037034A (en) * | 2014-08-11 | 2016-03-22 | 住友ゴム工業株式会社 | Mold for forming bladder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6929621B2 (en) * | 2002-10-02 | 2005-08-16 | Civco Medical Instruments Co., Inc. | Drainage catheter with bifurcating tip |
-
2017
- 2017-11-09 CN CN201711095566.7A patent/CN107693923B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0492674A (en) * | 1990-08-07 | 1992-03-25 | Fuji Syst Kk | Production of balloon catheter |
| JPH04174663A (en) * | 1990-11-07 | 1992-06-22 | Fuji Syst Kk | Manufacture of medical tube |
| WO2010090671A2 (en) * | 2009-01-20 | 2010-08-12 | Hollister Incorporated | Urinary catheter |
| JP2012213981A (en) * | 2011-04-01 | 2012-11-08 | Sumitomo Rubber Ind Ltd | Method for producing bladder |
| WO2015010391A1 (en) * | 2013-07-24 | 2015-01-29 | Wang Liang | Contact-limiting side balloon double-hole urinary catheter |
| JP2016037034A (en) * | 2014-08-11 | 2016-03-22 | 住友ゴム工業株式会社 | Mold for forming bladder |
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| Publication number | Publication date |
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| CN107693923A (en) | 2018-02-16 |
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