CN101785897B - Peripherally inserted central catheter - Google Patents
Peripherally inserted central catheter Download PDFInfo
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- CN101785897B CN101785897B CN2010101320579A CN201010132057A CN101785897B CN 101785897 B CN101785897 B CN 101785897B CN 2010101320579 A CN2010101320579 A CN 2010101320579A CN 201010132057 A CN201010132057 A CN 201010132057A CN 101785897 B CN101785897 B CN 101785897B
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- 239000003978 infusion fluid Substances 0.000 claims abstract description 16
- 210000003462 vein Anatomy 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 239000008280 blood Substances 0.000 abstract description 12
- 210000004369 blood Anatomy 0.000 abstract description 12
- 239000007788 liquid Substances 0.000 abstract description 12
- 238000001802 infusion Methods 0.000 abstract description 11
- 239000003814 drug Substances 0.000 abstract description 10
- 208000036828 Device occlusion Diseases 0.000 abstract description 6
- 239000000243 solution Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 229940079593 drug Drugs 0.000 description 3
- 208000007536 Thrombosis Diseases 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229940126585 therapeutic drug Drugs 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000560 biocompatible material Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000002512 chemotherapy Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002637 fluid replacement therapy Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 238000002642 intravenous therapy Methods 0.000 description 1
- 238000011866 long-term treatment Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 235000016236 parenteral nutrition Nutrition 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 210000002620 vena cava superior Anatomy 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
本发明涉及一种外周静脉置入中心静脉导管，包括导管、密闭无针输注药液接头，导管通过连接装置与密闭无针输注药液接头连接，导管壁上偏离导管中心轴面设有一导管切缝。导管切缝在不抽回血和不输、注药液时处于自然封闭状态，而当医护人员抽回血时导管内腔形成负压，导管切缝的大唇边向内凹；当医护人员输注药液时导管内腔形成正压，导管切缝的大唇边向外凸，这样，导管切缝具有双向导管阀的作用，作为输注药液进出口，可形成有效开口，方便输注药液。本发明结构合理，使用方便，输注药液可控性好，可有效避免导管堵塞。
The invention relates to a central venous catheter inserted into a peripheral vein, which includes a catheter and a sealed needle-free infusion liquid joint. The catheter is connected to the closed needle-free liquid medicine infusion joint through a connecting device. Catheter cut. The incision of the catheter is in a naturally closed state when no blood is drawn back or infused or injected, but when the medical staff withdraws blood, a negative pressure is formed in the inner cavity of the catheter, and the large lip of the catheter incision is concave inward; when the medical staff infuse Positive pressure is formed in the inner cavity of the catheter when the medicine is liquid, and the large lip of the catheter slit is protruding outwards. In this way, the catheter slit has the function of a two-way catheter valve, which can form an effective opening as the infusion liquid inlet and outlet, which is convenient for infusion. liquid. The invention has the advantages of reasonable structure, convenient use, good controllability of infusion of medicinal liquid, and can effectively avoid catheter blockage.
Description
技术领域 technical field
本发明涉及一种医疗器械，具体地说是一种外周静脉置入中心静脉导管。 The invention relates to a medical device, in particular to a central venous catheter inserted into a peripheral vein.
背景技术 Background technique
我们知道，经外周静脉穿刺置入的中心静脉导管（PICC）作为术中监测、输血，补液，术后各种治疗用药及癌症患者化疗，肠外营养的通路，已成为一种成熟、安全的中心静脉置管技术，近年来在国内逐渐推广和普及。目前，可持久留置的中心静脉导管包括留置导管、密闭无针输注药液接头，留置导管通过连接装置与密闭无针输注药液接头连接。留置导管定位于上腔静脉，用于为患者提供中期至长期的静脉输液治疗。中心静脉置管在长期的治疗过程中，不仅解决了病人每天穿刺的痛苦，在输注某些治疗用药（如钾）也不会引起局部疼痛，而且也提高了护士的工作效率，但是随着中心静脉导管临床应用的推广，许多问题也渐渐暴露出来。导管堵塞是长期应用静脉治疗或营养病人遇到的一重要问题，常常因此更换管或重新穿刺，一般认为引起导管堵塞的原因为血块、纤维素血栓形成或药物沉积。美国专利US4671769公开了一种静脉导管，其在导管壁上沿中心轴线切缝，导管切缝的两唇边完全对称。导管切缝在不抽回血和不输、注药液时处于自然封闭状态。医护人员抽回血时导管内腔形成负压，导管切缝的两唇边同时向内凹；而当医护人员输注药液时导管内腔形成正压，导管切缝的两唇边同时向外凸，这样，切缝作为输注药液进出口，同时还起阀门的作用。但是由于切缝的两唇边完全对称，其很难形成有效开口，导致输注药液困难。 We know that the central venous catheter (PICC) inserted through the peripheral vein has become a mature and safe way for intraoperative monitoring, blood transfusion, fluid replacement, postoperative various therapeutic drugs, chemotherapy for cancer patients, and parenteral nutrition. Central venous catheterization technology has gradually been promoted and popularized in China in recent years. At present, the central venous catheter that can be permanently indwelled includes an indwelling catheter and a closed needle-free infusion fluid connector, and the indwelling catheter is connected to the closed needle-free infusion fluid connector through a connecting device. An indwelling catheter is positioned in the superior vena cava to provide the patient with medium to long-term intravenous fluid therapy. In the long-term treatment process, the central venous catheter not only solves the pain of daily puncture for patients, but also does not cause local pain when infusion of certain therapeutic drugs (such as potassium), and also improves the work efficiency of nurses. With the promotion of the clinical application of central venous catheters, many problems have gradually come to light. Catheter blockage is an important problem encountered by long-term intravenous therapy or nutrition patients, and the tube is often replaced or repunctured. It is generally believed that the cause of catheter blockage is blood clots, cellulose thrombus formation, or drug deposition. US Patent No. 4,671,769 discloses a venous catheter, which is slit along the central axis on the catheter wall, and the two lips of the catheter slit are completely symmetrical. The incision of the catheter is in a naturally closed state when no blood is drawn back and no liquid is infused or injected. When the medical staff draws back the blood, the inner cavity of the catheter forms a negative pressure, and the two lips of the catheter slit are concave inward at the same time; when the medical staff infuses the drug solution, the inner cavity of the catheter forms a positive pressure, and the two lips of the catheter slit are simultaneously outward. Convex, like this, slit is used as infusion liquid medicine inlet and outlet, also plays the effect of valve simultaneously. However, due to the complete symmetry of the two lips of the incision, it is difficult to form an effective opening, resulting in difficulty in infusion of medicinal liquid.
发明内容 Contents of the invention
本发明所要解决的技术问题是克服上述现有技术的不足，提供一种结构合理，使用方便，具有潜在双向导管阀，输注药液可控性好，避免导管堵塞的外周静脉置入中心静脉导管。 The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior art, provide a kind of reasonable structure, easy to use, have potential two-way catheter valve, the controllability of infusion liquid medicine is good, and the peripheral vein that avoids catheter blockage is inserted into the central vein catheter.
本发明解决上述技术问题采用的技术方案是：一种外周静脉置入中心静脉导管，包括导管、密闭无针输注药液接头，留置导管通过连接装置与密闭无针输注药液接头连接，其特征在于导管壁上偏离导管中心轴面设有一导管切缝。 The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a central venous catheter inserted into a peripheral vein, including a catheter, a sealed needle-free infusion liquid joint, and the indwelling catheter is connected to the airtight needle-free liquid medicine infusion joint through a connecting device. It is characterized in that a conduit slit is arranged on the conduit wall away from the central axis of the conduit.
本发明所说的导管切缝偏离导管中心轴面的距离在0.2-0.6毫米之间。 In the present invention, the distance between the slit of the catheter and the central axis of the catheter is between 0.2-0.6 millimeters.
本发明所说的导管切缝大唇边一侧的导管内壁上还沿轴线设有一凹槽。 A groove is also arranged along the axis on the inner wall of the conduit on the side of the large lip of the conduit slit in the present invention.
本发明由于在导管壁上偏离导管中心轴面设有一导管切缝，该导管切缝在不抽回血和不输、注药液时处于自然封闭状态，而当医护人员抽回血时导管内腔形成负压，导管切缝大唇边向内凹；当医护人员输注药液时导管内腔形成正压，导管切缝大唇边向外凸，这样，导管切缝具有双向导管阀的作用，作为输注药液进出口，可形成有效开口，方便输注药液。对照现有技术，本发明结构合理，使用方便，输注药液可控性好，可有效避免导管堵塞。 In the present invention, a catheter slit is provided on the catheter wall deviated from the central axis of the catheter, and the catheter slit is in a naturally closed state when blood is not drawn back or infused or injected, and the catheter lumen is formed when the medical staff withdraws blood Negative pressure, the large lip of the catheter slit is concave inward; when the medical staff infuses the drug solution, the inner cavity of the catheter forms a positive pressure, and the large lip of the catheter slit protrudes outward. In this way, the catheter slit has the function of a two-way catheter valve. As the inlet and outlet of the infusion liquid, an effective opening can be formed to facilitate the infusion of the liquid medicine. Compared with the prior art, the invention has the advantages of reasonable structure, convenient use, good controllability of infusion of medicinal liquid, and can effectively avoid catheter blockage.
附图说明 Description of drawings
下面结合附图对本发明进一步说明。 The present invention will be further described below in conjunction with the accompanying drawings.
图1是本发明的结构示意图。 Fig. 1 is a structural schematic diagram of the present invention.
图2是本发明导管局部示意图。 Fig. 2 is a partial schematic view of the catheter of the present invention.
图3是图2的A-A向剖视图。 Fig. 3 is a sectional view taken along line A-A of Fig. 2 .
图4是本发明导管抽回血形成负压时切缝A-A向截面形变示意图。 Fig. 4 is a schematic diagram of the cross-sectional deformation of the slit A-A when the catheter of the present invention withdraws blood to form a negative pressure.
图5是本发明导管输、注药液形成正压时切缝A-A向截面形变示意图。 Fig. 5 is a schematic diagram of the cross-sectional deformation of the slit A-A when the catheter infusion and injection of the present invention forms a positive pressure.
图中1.密闭无针输注药液接头，2.连接装置，3.导管，4.导管内腔，5.导管切缝6.导管切缝大唇边，7.导管切缝小唇边，8.凹槽。 In the figure 1. Sealed needleless infusion liquid joint, 2. Connecting device, 3. Catheter, 4. Catheter lumen, 5. Catheter slit 6. Catheter slit large lip, 7. Catheter slit small lip , 8. Groove. the
具体实施方式 Detailed ways
从图1中可以看出，一种外周静脉置入中心静脉导管，包括导管3、密闭无针输注药液接头1，留置导管3通过连接装置2与密闭无针输注药液接头1连接。导管材料为硅胶等生物相容性材料，柔软，弹性好，导管上还标记有刻度标记。所述的密闭无针输注药液接头1和连接装置2和现有技术相同，不再赘述。
It can be seen from FIG. 1 that a peripherally inserted central venous catheter includes a
本发明的特点是：导管3壁上偏离导管中心轴面设有一导管切缝5。所说的导管切缝5偏离导管中心轴面的距离在0.2-0.6毫米之间。导管切缝5的两侧形成导管切缝大唇边6和导管切缝小唇边7。如图2、图3所示。导管切缝5是一个潜在的双向阀门。该导管切缝5在不抽回血和不输、注药液时处于自然封闭状态，阻止人体血液逆行外流。而当医护人员抽回血时，导管内腔4形成负压，导管切缝大唇边6受力大于导管切缝小唇边7，导管切缝大唇边6向内凹，导管切缝5潜在的阀门缝隙扩大，形成开口，血液就可以顺利的经过，如图4所示。当医护人员输注药液时导管内腔形成正压，导管内压力超过了预定数额导管以外的压力，导管切缝大唇边6受力大于导管切缝小唇边7，导管切缝的大唇边向外凸，导管切缝5潜在的阀门缝隙扩大，形成开口，如图5所示。药液就可以顺利的经过开口实现治疗目的。
The present invention is characterized in that: a
本发明所说的导管切缝大唇边6一侧的导管内壁上还沿轴线设有一凹槽8。这样可以使导管切缝大唇边6自身支撑力小于导管切缝小唇边7，便于其顺利变形，形成开口。
A
本发明由于在导管壁上偏离导管中心轴面设有一导管切缝，其是一个潜在的双向阀门，导管切缝具有双向导管阀的作用，作为输注药液进出口，可形成有效开口，方便输注药液。本发明结构合理，使用方便，输注药液可控性好，可有效避免导管堵塞。 In the present invention, a catheter slit is provided on the catheter wall away from the central axis of the catheter, which is a potential two-way valve, and the catheter slit has the function of a two-way catheter valve, which can form an effective opening as the inlet and outlet of the infusion liquid, which is convenient. Infusion of liquid medicine. The invention has the advantages of reasonable structure, convenient use, good controllability of infusion of medicinal liquid, and can effectively avoid catheter blockage.
Claims (1)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101320579A CN101785897B (en) | 2010-03-25 | 2010-03-25 | Peripherally inserted central catheter |
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|---|---|---|---|
| CN2010101320579A CN101785897B (en) | 2010-03-25 | 2010-03-25 | Peripherally inserted central catheter |
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| CN101785897A CN101785897A (en) | 2010-07-28 |
| CN101785897B true CN101785897B (en) | 2011-12-14 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103705996A (en) * | 2014-01-07 | 2014-04-09 | 山东威高集团医用高分子制品股份有限公司 | Peripheral vein transfusion catheter |
| CN106861034B (en) * | 2017-03-27 | 2024-08-23 | 郑州迪奥医学技术有限公司 | Low resistance three-way valve for catheter |
| CN115671492B (en) * | 2021-07-27 | 2026-04-03 | 上海微创生命科技有限公司 | Two-way valve, two-way valve assembly and PICC conduit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2232287Y (en) * | 1995-06-09 | 1996-08-07 | 四川康科生物材料制品有限责任公司 | Medicine liquid conducting tube for implantation administration device cabable of preventing blood reflux |
| CN2880135Y (en) * | 2006-01-26 | 2007-03-21 | 青岛大学医学院附属医院 | ported venous catheter |
| CN201631868U (en) * | 2010-03-25 | 2010-11-17 | 山东威高集团医用高分子制品股份有限公司 | peripherally inserted central catheter |
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