CN108325047B - External guide cardiac catheter device - Google Patents
External guide cardiac catheter device Download PDFInfo
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- CN108325047B CN108325047B CN201810252001.3A CN201810252001A CN108325047B CN 108325047 B CN108325047 B CN 108325047B CN 201810252001 A CN201810252001 A CN 201810252001A CN 108325047 B CN108325047 B CN 108325047B
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- light
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- cardiac catheter
- detection section
- catheter
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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
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/0045—Catheters; Hollow probes characterised by structural features multi-layered, e.g. coated
-
- 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
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/58—Means for facilitating use, e.g. by people with impaired vision
- A61M2205/587—Lighting arrangements
Abstract
The invention discloses an external guide cardiac catheter device, which relates to the field of clinical medical treatment and is characterized in that the cardiac catheter comprises a catheter body, a light measuring section, a distance measuring section, a detection section and a knob end; the light measurement section and the detection section comprise light-emitting structures made of organic light-emitting materials, so that the position of the cardiac catheter inserted into the body in vitro can be accurately positioned, the X-ray radiation in the operation process of the cardiac catheter is almost avoided, and the health effect of a patient and medical care personnel is guaranteed.
Description
Technical Field
The invention relates to the field of clinical medical treatment, in particular to an in-vitro guiding cardiac catheter device.
Background
Cardiac catheterization. The catheter is inserted into peripheral blood vessel and sent to heart cavity and great blood vessel for obtaining information, examination and diagnosis and some treatment measures. The catheter can be sent to the right part of the heart and the pulmonary artery, can also be sent to the left part of the heart and the aorta, and can be injected with contrast medium or be used for clinical electrophysiological examination.
Traditional cardiac catheter often carries out simple location through catheter insertion's length to carry out accurate positioning through C type arm X ray machine, different with ordinary X ray machine film, in the cardiac catheter puts into the operation, often need can accomplish the operation for a long time, medical ionizing radiation causes the potential danger of organism damage for medical personnel and receives more and more attention. During the operation, the protection consciousness of the operation related personnel on the ionizing radiation is improved, and the proper protection measures are implemented for the operation medical personnel and the operated personnel, so that the harm of the ionizing radiation is reduced as much as possible. The protection current situation of operating room's ionizing radiation uses C type arm X line machine my branch of academic or vocational study, and most medical personnel think in the actual work that the operation is loaded down with trivial details in the art, in order to shorten C type arm X line machine live time, the light other people protection of heavy self protection. Long exposure time, many times of exposure, and the phenomenon of careless or incorrect use of the protection equipment. In addition, patients and nurses and other personnel are less conscious of the need for protection, creating a weak current situation for protection against ionizing radiation.
Adverse effects of ionizing radiation on the human body the damage of ionizing radiation to the human body is mainly due to the characteristic of ionizing radiation-biological effects. After the ionizing radiation irradiates the body, living tissue cells and body fluid are obstructed and even the cells are damaged, and the damage degree is in direct proportion to the quantity of the ionizing radiation. Low doses of ionizing radiation affect important cellular responses leading to changes in gene expression, inducing carcinogenesis. The most obvious change in peripheral blood cells after long-term low dose irradiation is a varying degree of leukopenia. The incidence of teratogenesis, abortion and ectopic pregnancy caused by radioactive injury is higher than that of normal people. Can opacifie the crystalline lens and generate radioactive cataract. Can inhibit bone marrow hematopoiesis.
Technicians often attach importance to the improvement of catheter materials in the prior art and do not pay attention to how to facilitate harmless positioning operations, such as:
the patent of invention with application publication number CN106823102A discloses a double-wire braided angiography catheter in the field of medical appliances, which comprises a catheter body, a transition section and a soft end: the hardness of the catheter body, the transition section and the soft end is reduced in sequence; the opening end of the soft end is provided with a first step surface which shrinks towards the radial inner side, and the inner circumference of the first end part of the transition section is lapped with the outer circumference of the first step surface; the second end of changeover portion is equipped with the second step face of radially contracting to the inboard, the pipe body includes radially from inside to outside inner tube, metal pipe network and the outer tube that sets gradually, the metal pipe network is woven by bimetallic wire and is formed, the length of metal pipe network is less than the inner tube with the length of outer tube, make the interior circumference of the first end of pipe body with the outer circumference overlap joint of second step face. The technical effects are as follows: the composite material has better compression resistance, toughness, torsion resistance and tensile resistance, reduces the creeping friction force, reduces the damage to the surface mucosa of the blood vessel, reduces the secondary damage and improves the comfort level of a patient.
The patent of the invention with the application publication number of CN106334250A provides a radiography catheter anti-reflux device, which comprises an outer sleeve and an anti-reflux assembly, wherein the anti-reflux assembly comprises a sleeve seat, a connecting piece, a valve and a valve base; the diaphragm comprises a main body, a diaphragm upper bulge and a diaphragm lower bulge, wherein an opening is arranged on the diaphragm upper bulge, the diaphragm upper bulge is divided into two diaphragms by the opening, a groove is arranged in the middle of the diaphragm lower bulge, and a round hole is formed in the center of the groove. The valve of the contrast catheter anti-reflux device can enable the oviduct catheter to pass through smoothly, and wraps the oviduct catheter to seal the joint, so that the contrast liquid is prevented from leaking out in a reverse flow manner, and the examination is convenient.
Therefore, the modern innovations about the cardiac catheter focus on the improvement of the catheter material and simple function, and do not provide enough improvement on how to reduce the X-ray radiation during the intubation of the cardiac catheter.
Disclosure of Invention
The invention aims to provide an in vitro cardiac catheter guiding device which can accurately position the position of a cardiac catheter inserted into a body in vitro, almost completely eradicates X-ray radiation in the process of cardiac catheter insertion surgery and ensures the health of patients and medical care personnel.
In order to solve the problems, the invention discloses an external guiding cardiac catheter device which is characterized in that the cardiac catheter comprises a catheter body, a light measuring section, a distance measuring section, a detection section and a top ball end;
the catheter body is a common plastic catheter;
the light measurement section and the detection section include: a positive electrode wire including at least one linear conductor; the light-emitting layer is an organic electroluminescent polymer and wraps the positive electrode wire; the light-transmitting conducting layer coats the light-emitting layer; the negative electrode wire at least comprises a linear conductor and is contacted with the periphery of the light-transmitting conducting layer; the transparent polymer layer is coated outside the light-transmitting conductive layer with the negative electrode wire; the transparent outer insulating layer covers the positive electrode wire and the like, and the positive electrode wire and the negative electrode wire extend to the tail end of the catheter along the core catheter and are connected with an external power supply;
the detection section is of a bent structure;
the distance measuring section is a pure black opaque section with a fixed length;
the top ball section is of a plastic hemispherical structure with self-lubricating property, and an opening is formed in the center of the ball.
Further, the electroluminescent material is a blue light material with the emission wavelength of 420-460 nm.
Further, the blue light electroluminescent material at least contains one of fluorene, spirofluorene, anthracene, carbazole, pyrene ring and aryl ketone.
Further, the fixed length of the ranging segment is 0.1-4 cm.
Further, the length of the light detection section is 3-6 times of that of the detection section, and the length of the detection section is 0.1-4 cm.
Further, the top ball section is made of one of ultra-high molecular weight polyethylene, polytetrafluoroethylene or nylon.
Further, the positive electrode line and the negative electrode line of the light measuring section and the detection section are connected with each other.
The invention also discloses a using method of the external guiding cardiac catheter device, which is characterized in that: the method comprises the following steps:
(1) the patient lies on the bed and the operation part is disinfected;
(2) after arterial puncture, a sheath tube is placed in the blood vessel;
(3) inserting the heart catheter of the invention from the sheath and connecting the power supply;
(4) testing the intensity of blue light with specific wavelength by a light measuring instrument, wherein the light intensity can obviously present an interval from light to dark to light according to a light testing section, a distance measuring section and a detection section;
(5) two points are taken at the position of the dark space, and when the light intensities of the two points are the same and the distance between the two points is the length of the ranging segment, the illumination intensities corresponding to the two points are the required brightness L;
(6) detecting a point with the blue light intensity of L at the detection section, wherein the position of the point of L is the position of the tail end of the top ball end;
(7) after the position is determined, other accurate measurements are taken and further medical treatment is performed.
Further wherein the supply voltage is below 12V.
Further, wherein the orientation of the knob section may be changed by axially rotating the catheter body.
The invention discloses an in vitro guide cardiac catheter device, which creatively adopts the luminous principle to solve the problem of positioning the top end of a catheter, solves the problem that in the prior art, X-rays are required to be used for judging the position of the catheter for a long time, and brings great guarantee to the physical health of patients and medical care workers. And the surface light source based on organic electroluminescence is selectively used, the point light emission is different from the point light emission of the common inorganic light emitting diode, and the complicated chip structure of the common inorganic light emitting diode cannot be put into the cardiac catheter with a precise structure for use, and does not generate a large amount of heat to affect the physical condition of a patient like the common light emission. Through inserting internal back, the light detection appearance is to the judgement of illumination intensity and distance, and the actual illumination intensity of light and shade juncture is judged to the accuracy, and then can be more accurate through illumination intensity judge the position of detection section and knob end juncture.
The invention has the beneficial effects that:
1. the positioning is carried out in a light-emitting mode, the positioning is different from the ordinary X-ray positioning, the adverse effect is generated on human bodies, and the ordinary blue light irradiation positioning is harmless to human bodies.
2. Through knowing the concrete length of detection section, detect the position that the specific length both ends luminous intensity is the same, judge the luminous intensity of light and shade juncture, and then judge the knob end position, do not need the X ray to judge.
3. The organic electroluminescent material can emit planar light, so that the whole conduit emits light, has no light-emitting dead angle and is more favorable for position judgment.
4. The organic electroluminescent material has high luminous intensity, high brightness and less heat generation, so that the damage of high temperature to human body is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the structure of the light detection section and the detection section of the present invention.
FIG. 3 is an enlarged view of the layer structure of the light detecting section and the detecting section of the present invention.
In the figure, 1, a catheter body 2, a light measuring section 3, a distance measuring section 4, a detection section 5, a top ball end 6, an opening 101, a transparent outer insulating layer 102, a positive wire 103, a light emitting layer 104, a light-transmitting conductive layer 105, a negative wire 106 and a transparent polymer layer are arranged in sequence
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all 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.
The first embodiment is as follows:
an in vitro guiding cardiac catheter device is characterized in that the cardiac catheter comprises a catheter body 1, a photometric section 2, a distance measuring section 3, a detection section 4 and a knob end 5;
the catheter body is a common plastic catheter;
the light measurement section and the detection section include: a positive electrode wire 102 including at least one linear conductor; a light-emitting layer 103 which is an organic electroluminescent polymer and covers the positive electrode line; a light-transmitting conductive layer 104 that coats the light-emitting layer; a negative electrode wire 105, which comprises at least one linear conductor and is in contact with the periphery of the light-transmitting conductive layer; a transparent polymer layer 106, which is coated outside the light-transmitting conductive layer with the negative electrode wire; the transparent outer insulating layer 101 covers the positive electrode wire and the like, and the positive electrode wire and the negative electrode wire extend to the tail end of the catheter along the core catheter and are connected with an external power supply;
the detection section is of a bent structure;
the distance measuring section is a pure black opaque section with a fixed length;
the top ball section is of a plastic hemispherical structure with self-lubricating property, and an opening 6 is formed in the center of the ball.
Wherein the electroluminescent material is a blue light material with the emission wavelength of 420 nm. The blue light electroluminescent material contains fluorene and spirofluorene structures. Wherein the fixed length of the ranging segment is 1 cm. Wherein the length of the light detection section is 3 times of that of the detection section, and the length of the detection section is 1 cm. The top ball section is polyethylene with ultrahigh molecular weight. And the positive electrode line and the negative electrode line of the light measuring section and the detection section are connected with each other.
The method for using the extracorporeal guiding catheter device comprises the following steps:
(1) the patient lies on the bed and the operation part is disinfected;
(2) after arterial puncture, a sheath tube is placed in the blood vessel;
(3) inserting the heart catheter of the invention from the sheath and connecting the power supply;
(4) testing the intensity of blue light with specific wavelength by a light measuring instrument, wherein the light intensity can obviously present an interval from light to dark to light according to a light testing section, a distance measuring section and a detection section;
(5) two points are taken at the dark space position, and when the light intensities of the two points are the same and the distance between the two points is the length of the ranging segment, the illumination intensities corresponding to the two points are the required brightness L1;
(6) measuring a point with the blue light intensity of L1 in the detection section, wherein the position of the point of L1 is the position of the tail end of the top ball end;
(7) after the position is determined, other accurate measurements are taken and further medical treatment is performed.
Example two:
an in vitro guiding cardiac catheter device is characterized in that the cardiac catheter comprises a catheter body 1, a photometric section 2, a distance measuring section 3, a detection section 4 and a knob end 5;
the catheter body is a common plastic catheter;
the light measurement section and the detection section include: a positive electrode wire 102 including at least one linear conductor; a light-emitting layer 103 which is an organic electroluminescent polymer and covers the positive electrode line; a light-transmitting conductive layer 104 that coats the light-emitting layer; a negative electrode wire 105, which comprises at least one linear conductor and is in contact with the periphery of the light-transmitting conductive layer; a transparent polymer layer 106, which is coated outside the light-transmitting conductive layer with the negative electrode wire; the transparent outer insulating layer 101 covers the positive electrode wire and the like, and the positive electrode wire and the negative electrode wire extend to the tail end of the catheter along the core catheter and are connected with an external power supply;
the detection section is of a bent structure;
the distance measuring section is a pure black opaque section with a fixed length;
the top ball section is of a plastic hemispherical structure with self-lubricating property, and an opening 6 is formed in the center of the ball.
Wherein the electroluminescent material is a blue light material with the emission wavelength of 420 nm. The blue light electroluminescent material contains fluorene and spirofluorene structures. Wherein the fixed length of the ranging segment is 3 cm. Wherein the length of the light detection section is 3 times that of the detection section, and the length of the detection section is 2 cm. The top ball section is polyethylene with ultrahigh molecular weight. And the positive electrode line and the negative electrode line of the light measuring section and the detection section are connected with each other.
The method for using the extracorporeal guiding catheter device comprises the following steps:
(1) the patient lies on the bed and the operation part is disinfected;
(2) after arterial puncture, a sheath tube is placed in the blood vessel;
(3) inserting the heart catheter of the invention from the sheath and connecting the power supply;
(4) testing the intensity of blue light with specific wavelength by a light measuring instrument, wherein the light intensity can obviously present an interval from light to dark to light according to a light testing section, a distance measuring section and a detection section;
(5) two points are taken at the dark space position, and when the light intensities of the two points are the same and the distance between the two points is the length of the ranging segment, the illumination intensities corresponding to the two points are the required brightness L2;
(6) measuring a point with the blue light intensity of L2 in the detection section, wherein the position of the point of L2 is the position of the tail end of the top ball end;
(7) after the position is determined, other accurate measurements are taken and further medical treatment is performed.
Example three:
an in vitro guiding cardiac catheter device is characterized in that the cardiac catheter comprises a catheter body 1, a photometric section 2, a distance measuring section 3, a detection section 4 and a knob end 5;
the catheter body is a common plastic catheter;
the light measurement section and the detection section include: a positive electrode wire 102 including at least one linear conductor; a light-emitting layer 103 which is an organic electroluminescent polymer and covers the positive electrode line; a light-transmitting conductive layer 104 that coats the light-emitting layer; a negative electrode wire 105, which comprises at least one linear conductor and is in contact with the periphery of the light-transmitting conductive layer; a transparent polymer layer 106, which is coated outside the light-transmitting conductive layer with the negative electrode wire; the transparent outer insulating layer 101 covers the positive electrode wire and the like, and the positive electrode wire and the negative electrode wire extend to the tail end of the catheter along the core catheter and are connected with an external power supply;
the detection section is of a bent structure;
the distance measuring section is a pure black opaque section with a fixed length;
the top ball section is of a plastic hemispherical structure with self-lubricating property, and an opening 6 is formed in the center of the ball.
Wherein the electroluminescent material is a blue light material with the emission wavelength of 420 nm. The blue light electroluminescent material contains fluorene and spirofluorene structures. Wherein the fixed length of the ranging segment is 4 cm. Wherein the length of the light detection section is 3 times that of the detection section, and the length of the detection section is 4 cm. The top ball section is polyethylene with ultrahigh molecular weight. And the positive electrode line and the negative electrode line of the light measuring section and the detection section are connected with each other.
The method for using the extracorporeal guiding catheter device comprises the following steps:
(1) the patient lies on the bed and the operation part is disinfected;
(2) after arterial puncture, a sheath tube is placed in the blood vessel;
(3) inserting the heart catheter of the invention from the sheath and connecting the power supply;
(4) testing the intensity of blue light with specific wavelength by a light measuring instrument, wherein the light intensity can obviously present an interval from light to dark to light according to a light testing section, a distance measuring section and a detection section;
(5) two points are taken at the dark space position, and when the light intensities of the two points are the same and the distance between the two points is the length of the ranging segment, the illumination intensities corresponding to the two points are the required brightness L3;
(6) measuring a point with the blue light intensity of L3 in the detection section, wherein the position of the point of L3 is the position of the tail end of the top ball end;
(7) after the position is determined, other accurate measurements are taken and further medical treatment is performed.
Comparative example 1
The cardiac catheter device is generally used clinically, and is positioned by X-ray.
Animal experiments, twelve porcine cardiovascular systems are selected and randomly divided into four groups, each group comprises three parts, the cardiovascular systems are respectively placed through the cardiac catheters in the first embodiment, the second embodiment and the comparative embodiment, the first comparative embodiment uses X-ray to locate in the whole process, the embodiment only uses X-ray to accurately locate in the end, a radiation dose monitoring machine is prevented from being arranged beside the cardiovascular systems, and the whole radioactive dose is detected, as shown in the following chart:
| number of groups | Irradiated dose first group | Irradiated dose first group | Irradiated dose first group |
| Example one | 0.06mSv | 0.07mSv | 0.06mSv |
| Example two | 0.05mSv | 0.06mSv | 0.06mSv |
| EXAMPLE III | 0.05mSv | 0.06mSv | 0.05mSv |
| Comparative example 1 | 0.25mSv | 0.24mSv | 0.26mSv |
From the above data, it can be seen that cardiac catheters of common clinical use require a large amount of radiation exposure, whereas cardiac catheters of the present invention require a small dose of radiation.
Claims (7)
1. An in vitro guiding cardiac catheter device is characterized in that the cardiac catheter comprises a catheter body, a light measuring section, a distance measuring section, a detection section and a knob section;
the catheter body is a common plastic catheter;
the light measurement section and the detection section include: a positive electrode wire including at least one linear conductor; the light-emitting layer is an organic electroluminescent polymer and wraps the positive electrode wire; the light-transmitting conducting layer coats the light-emitting layer; the negative electrode wire at least comprises a linear conductor and is contacted with the periphery of the light-transmitting conducting layer; the transparent polymer layer is coated outside the light-transmitting conductive layer with the negative electrode wire;
the transparent outer insulating layer covers the anode wire, and the anode wire and the cathode wire extend to the tail end of the catheter along the cardiac catheter and are connected with an external power supply;
the detection section is of a bent structure;
the distance measuring section is a pure black opaque section with a fixed length;
the top ball section is of a plastic hemispherical structure with self-lubricating property, and an opening is formed in the center of the ball.
2. The extracorporeal guidance cardiac catheter device of claim 1, wherein: the light emitting layer is made of a blue light material with the emission wavelength of 420-460 nm.
3. The extracorporeal guidance cardiac catheter device of claim 2, wherein: the blue light material at least contains one of fluorene, spirofluorene, anthracene, carbazole, pyrene ring and aryl ketone.
4. The extracorporeal guidance cardiac catheter device of claim 1, wherein: the fixed length of the ranging section is 0.1-4 cm.
5. The extracorporeal guidance cardiac catheter device of claim 1, wherein: the length of the light detection section is 3-6 times of that of the detection section, and the length of the detection section is 0.1-4 cm.
6. The extracorporeal guidance cardiac catheter device of claim 1, wherein: the top ball section is one of polyethylene, polytetrafluoroethylene or nylon with ultrahigh molecular weight.
7. The extracorporeal guidance cardiac catheter device of claim 1, wherein: and the positive electrode line and the negative electrode line of the light measurement section are respectively connected with the positive electrode line and the negative electrode line of the detection section.
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| CN201810252001.3A CN108325047B (en) | 2018-03-26 | 2018-03-26 | External guide cardiac catheter device |
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| CN201810252001.3A CN108325047B (en) | 2018-03-26 | 2018-03-26 | External guide cardiac catheter device |
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| CN108325047B true CN108325047B (en) | 2020-09-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1059849A (en) * | 1990-09-17 | 1992-04-01 | 青岛市临床医学研究所 | External guided cardiac catheterization equipment |
| CN1628602A (en) * | 2003-12-15 | 2005-06-22 | 西门子公司 | Conduit device comprising conduit especially that in blood vessel |
| CN101014884A (en) * | 2004-08-16 | 2007-08-08 | 艾科悉德成像有限公司 | Method and system for extending the depth of focus |
| CN202128806U (en) * | 2011-05-16 | 2012-02-01 | 吴卫兵 | Light-emitting nasal feeding nutrition tube guiding and placing device under total endoscopy |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5858556A (en) * | 1997-01-21 | 1999-01-12 | Uti Corporation | Multilayer composite tubular structure and method of making |
| US6217566B1 (en) * | 1997-10-02 | 2001-04-17 | Target Therapeutics, Inc. | Peripheral vascular delivery catheter |
| US6945970B2 (en) * | 2001-12-27 | 2005-09-20 | Scimed Life Systems, Inc. | Catheter incorporating a curable polymer layer to control flexibility and method of manufacture |
| DE10256007A1 (en) * | 2002-11-30 | 2004-06-09 | Philips Intellectual Property & Standards Gmbh | A catheter assembly |
| CN106817813A (en) * | 2015-12-02 | 2017-06-09 | 广州市新钜电子有限公司 | Polymer electroluminescent luminous line |
-
2018
- 2018-03-26 CN CN201810252001.3A patent/CN108325047B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059849A (en) * | 1990-09-17 | 1992-04-01 | 青岛市临床医学研究所 | External guided cardiac catheterization equipment |
| CN1628602A (en) * | 2003-12-15 | 2005-06-22 | 西门子公司 | Conduit device comprising conduit especially that in blood vessel |
| CN101014884A (en) * | 2004-08-16 | 2007-08-08 | 艾科悉德成像有限公司 | Method and system for extending the depth of focus |
| CN202128806U (en) * | 2011-05-16 | 2012-02-01 | 吴卫兵 | Light-emitting nasal feeding nutrition tube guiding and placing device under total endoscopy |
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