CN221045299U - A new type of intestinal obstruction catheter - Google Patents
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- 208000003243 intestinal obstruction Diseases 0.000 title claims abstract description 46
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- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 27
- 235000016709 nutrition Nutrition 0.000 claims abstract description 20
- 230000035764 nutrition Effects 0.000 claims abstract description 20
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- 238000003780 insertion Methods 0.000 claims description 12
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- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 10
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 230000006837 decompression Effects 0.000 abstract description 9
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Abstract
本实用新型涉及医疗器械技术领域，涉及一种新型肠梗阻导管，包括主导管，主导管的前端依次连接有导向头、前球囊和后球囊，所述主导管的末端连接有前球囊活门和后球囊活门，所述主导管的内壁设有抗菌涂层，所述主导管的外壁设有润滑涂层。优点：(1)通过润滑涂层的设置增加了导管在患者体内的舒适感，延长导管在体内的时间，减少拔出次数，降低导管被污染的概率。提高了肠梗阻导管的安全性，较少患者因肠梗阻导管感染的风险。(2)通过抗菌涂层的设置增加了肠梗阻导管的抗菌性能，从而进一步提高导管的安全性。(3)通过肠内营养输送通道的设置，增加了导管为患者输送营养物质的功能。(4)通过侧孔的设置，增加了肠梗阻导管胃减压的功能。
The utility model relates to the technical field of medical devices, and relates to a novel intestinal obstruction catheter, comprising a main catheter, the front end of which is connected in sequence with a guide head, a front balloon and a rear balloon, the end of which is connected with a front balloon valve and a rear balloon valve, the inner wall of the main catheter is provided with an antibacterial coating, and the outer wall of the main catheter is provided with a lubricating coating. Advantages: (1) The provision of the lubricating coating increases the comfort of the catheter in the patient's body, prolongs the time the catheter stays in the body, reduces the number of times the catheter is pulled out, and reduces the probability of contamination of the catheter. The safety of the intestinal obstruction catheter is improved, and the risk of infection due to the intestinal obstruction catheter is reduced in patients. (2) The provision of the antibacterial coating increases the antibacterial properties of the intestinal obstruction catheter, thereby further improving the safety of the catheter. (3) The provision of an enteral nutrition delivery channel increases the function of the catheter in delivering nutrients to the patient. (4) The provision of the side hole increases the function of gastric decompression of the intestinal obstruction catheter.
Description
技术领域Technical Field
本实用新型涉及医疗器械技术领域，更具体地，涉及一种新型肠梗阻导管。The utility model relates to the technical field of medical devices, and more specifically, to a novel intestinal obstruction catheter.
背景技术Background technique
肠梗阻是指任何原因引起的肠内容物通过障碍,是腹部外科常见急腹症之一,诊断困难,病情发展快,若未得到及时合理的治疗,往往危及生命,其中以手肠内、肠壁和肠外各种不同机械性因素引起的肠内容通过障碍多见。常规予以胃肠减压、禁食、补液,静脉营养等保守治疗,但无明显效果,手术亦有一定难度,且并发症多,术后可能再发生肠梗阻,特别是晚期肿瘤所致梗阻,既无手术机会,保守治疗欠佳,针对这类患者,选择合适的治疗是困难的。因此对肠梗阻的患者必须及时对梗阻部位进行减压和引流，而肠梗阻导管是减压和引流的重要工具。Intestinal obstruction refers to the obstruction of intestinal contents caused by any reason. It is one of the common acute abdomens in abdominal surgery. It is difficult to diagnose and the disease progresses rapidly. If it is not treated promptly and reasonably, it is often life-threatening. Among them, the obstruction of intestinal contents caused by various mechanical factors in the intestine, intestinal wall and outside the intestine is common. Conventional conservative treatments such as gastrointestinal decompression, fasting, fluid replacement, and intravenous nutrition have no obvious effect. Surgery is also difficult and has many complications. Intestinal obstruction may occur again after surgery, especially obstruction caused by advanced tumors. There is no chance of surgery and conservative treatment is poor. It is difficult to choose appropriate treatment for such patients. Therefore, patients with intestinal obstruction must decompress and drain the obstruction site in time, and the intestinal obstruction catheter is an important tool for decompression and drainage.
肠梗阻导管经鼻型肠梗阻导管置入术是指在胃镜或X线引导下，应用导丝将经鼻型肠梗阻导管插至空肠近端或以远的深部小肠，进行全程引流和减压的一种非血管介入技术。其具备许多优点。对于单纯性粘连肠梗阻，通过放置肠梗阻导管可有效解除梗阻，避免手术。对于复杂性或难治性肠梗阻，肠梗阻导管可作为小肠内支架(肠排列导管)，预防术后粘连性肠梗阻的发生。对于晚期肿瘤性梗阻，可以通过肠梗阻导管进行术前和术后的胃肠减压、肠内营养、药物灌注治疗等，有望延长病人的生存时间，改善病人的生活质量。此外，通过肠梗阻导管进行小肠造影检查，不仅能克服传统消化道造影因肠管重叠、肠内容物干扰导致的诊断及定位困难，还可以根据诊断结果进行同步治疗。Nasal ileus catheter placement is a non-vascular interventional technique that uses a guide wire to insert a nasal ileus catheter into the deep small intestine proximal to or beyond the jejunum under the guidance of a gastroscope or X-ray to perform full-course drainage and decompression. It has many advantages. For simple adhesive intestinal obstruction, the placement of an ileus catheter can effectively relieve the obstruction and avoid surgery. For complex or refractory intestinal obstruction, the ileus catheter can be used as a small intestinal stent (intestinal alignment catheter) to prevent the occurrence of postoperative adhesive intestinal obstruction. For advanced tumor obstruction, preoperative and postoperative gastrointestinal decompression, enteral nutrition, and drug infusion therapy can be performed through the ileus catheter, which is expected to prolong the patient's survival time and improve the patient's quality of life. In addition, small intestinal angiography through an ileus catheter can not only overcome the diagnosis and positioning difficulties caused by traditional gastrointestinal angiography due to intestinal overlap and interference of intestinal contents, but also can be treated synchronously according to the diagnosis results.
然而，现有的肠梗阻导管存在一些不足：其一，其表面粗糙，患者使用时舒适性不佳，导致肠梗阻导管在患者体内停留时间不长，而导管拔出的次数越多越容易被污染，增加了患者感染的风险，且重新拔出再插入操作增加患者痛苦和工作人员工作量；其二，现有的导管抗菌性能较差，也容易引起继发的肠道感染；再有，传统的肠梗阻导管也不具有营养输送和胃减压的功能。However, existing intestinal obstruction catheters have some shortcomings: first, their surface is rough, which makes them uncomfortable for patients to use, resulting in the intestinal obstruction catheters not staying in the patient's body for a long time. The more times the catheter is pulled out, the easier it is to be contaminated, increasing the risk of infection for the patient, and the operation of re-pulling and reinserting increases the patient's pain and the workload of the staff; second, the existing catheters have poor antibacterial properties and are also prone to cause secondary intestinal infections; in addition, traditional intestinal obstruction catheters do not have the functions of nutrient delivery and gastric decompression.
实用新型内容Utility Model Content
本实用新型旨在克服上述现有技术的至少一种缺陷，提供一种新型肠梗阻导管，用于解决提高肠梗阻导管的安全性。The utility model aims to overcome at least one defect of the above-mentioned prior art and provide a novel intestinal obstruction catheter for improving the safety of the intestinal obstruction catheter.
本实用新型采取的技术方案是，一种新型肠梗阻导管，包括主导管，所述主导管的前端依次连接有导向头、前球囊和后球囊，所述主导管的末端连接有前球囊活门和后球囊活门，所述主导管的内壁设有抗菌涂层，所述主导管的外壁设有润滑涂层。The technical solution adopted by the utility model is a novel intestinal obstruction catheter, comprising a main catheter, the front end of which is connected to a guide head, a front balloon and a rear balloon in sequence, the end of which is connected to a front balloon valve and a rear balloon valve, the inner wall of the main catheter is provided with an antibacterial coating, and the outer wall of the main catheter is provided with a lubricating coating.
在本技术方案中，前球囊活门用于前球囊注入，后球囊活门用于后球囊注入。抗菌涂层能够抑制肠道细菌在导管表面繁衍和在肠道内移位。另外，润滑涂层的设置增加了导管在患者体内的舒适感，延长导管在体内的时间，减少拔出次数，降低导管被污染的概率。如此提高了肠梗阻导管的安全性，较少患者因肠梗阻导管感染的风险。In this technical solution, the front balloon valve is used for front balloon injection, and the rear balloon valve is used for rear balloon injection. The antibacterial coating can inhibit the growth of intestinal bacteria on the catheter surface and their displacement in the intestine. In addition, the provision of the lubricating coating increases the comfort of the catheter in the patient's body, prolongs the time the catheter stays in the body, reduces the number of times the catheter is pulled out, and reduces the probability of catheter contamination. This improves the safety of intestinal obstruction catheters and reduces the risk of infection in patients due to intestinal obstruction catheters.
进一步的，所述抗菌涂层为脱乙酰壳聚糖层。Furthermore, the antibacterial coating is a deacetylated chitosan layer.
在本技术方案中，脱乙酰壳聚糖具有生物相容性、生物降解、生理惰性、抗菌性、抑真菌等多种性能，具有广泛的抗菌性，小分子的脱乙酰壳聚糖具有质子化铵,质子化铵与细菌带负电荷的细胞膜作用,吸附和聚沉细菌,同时穿透细胞壁进入细胞内,扰乱细菌的新陈代谢及合成而具有抗菌作用。In the present technical solution, deacetylated chitosan has multiple properties such as biocompatibility, biodegradability, physiological inertness, antibacterial, and antifungal properties, and has a wide range of antibacterial properties. The small molecule deacetylated chitosan has protonated ammonium, which interacts with the negatively charged cell membrane of bacteria to adsorb and precipitate bacteria, and at the same time penetrates the cell wall to enter the cell, disrupting the metabolism and synthesis of the bacteria and having an antibacterial effect.
进一步的，所述润滑涂层为聚乙烯基吡咯烷酮层。Furthermore, the lubricating coating is a polyvinyl pyrrolidone layer.
在本技术方案中，聚乙烯吡咯烷酮作为一种合成水溶性高分子化合物，具有水溶性高分子化合物的一般性质，在合成高分子中像聚乙烯吡咯烷酮这样既溶于水，又溶于大部分有机溶剂、毒性很低、生物相容性好。在润湿状态下，涂层被水激活，形成无色透明的水凝胶，传统肠梗阻导管在使用和拔出时患者的鼻咽异物感较强，亲水改性后能够增加导管的润滑性和减少摩擦力。In this technical solution, polyvinyl pyrrolidone, as a synthetic water-soluble polymer compound, has the general properties of water-soluble polymer compounds. Among synthetic polymers, polyvinyl pyrrolidone is soluble in water and most organic solvents, has low toxicity and good biocompatibility. In a wet state, the coating is activated by water to form a colorless and transparent hydrogel. When using and removing traditional intestinal obstruction catheters, patients have a strong foreign body sensation in the nasopharynx. After hydrophilic modification, the lubricity of the catheter can be increased and the friction can be reduced.
进一步的，所述主导管包括导管壁和导管内腔，所述导管壁内设有各自独立的前球囊通道、后球囊通道和肠内营养输送通道。Furthermore, the main catheter includes a catheter wall and a catheter lumen, and the catheter wall is provided with a front balloon channel, a rear balloon channel and an enteral nutrition delivery channel which are independent of each other.
在本技术方案中，导管内腔、前球囊通道、后球囊通道和肠内营养输送通道互不相通。肠内营养输送通道用于为患者输送营养物质。In this technical solution, the inner cavity of the catheter, the front balloon channel, the rear balloon channel and the enteral nutrition delivery channel are not connected to each other. The enteral nutrition delivery channel is used to deliver nutrients to the patient.
进一步的，所述主导管的前端设有若干个侧孔，所述侧孔连通导管内腔。Furthermore, the front end of the main catheter is provided with a plurality of side holes, and the side holes are connected to the inner cavity of the catheter.
在本技术方案中，所述侧孔用于胃减压。In the present technical solution, the side hole is used for gastric decompression.
进一步的，所述主导管的长度为3m～3.5m。Furthermore, the length of the main conduit is 3m to 3.5m.
进一步的，所述主导管在前55cm处避开导向头、前球囊和后球囊设有所述侧孔。Furthermore, the main catheter is provided with the side hole at the front 55 cm away from the guide head, the front balloon and the rear balloon.
进一步的，所述主导管前端设有经鼻插入部，所述经鼻插入部的主导管的外径为10Fr。Furthermore, a transnasal insertion portion is provided at the front end of the main catheter, and the outer diameter of the transnasal insertion portion of the main catheter is 10Fr.
进一步的，所述主导管前端30cm为经鼻插入部。Furthermore, the front 30 cm of the main catheter is a transnasal insertion portion.
进一步的，所述主导管的材质为硅胶。Furthermore, the main conduit is made of silicone.
与现有技术相比，本实用新型的有益效果为：Compared with the prior art, the beneficial effects of the utility model are:
(1)本实用新型通过润滑涂层的设置增加了导管在患者体内的舒适感，延长导管在体内的时间，减少拔出次数，降低导管被污染的概率。提高了肠梗阻导管的安全性，较少患者因肠梗阻导管感染的风险。(1) The utility model increases the comfort of the catheter in the patient's body by setting a lubricating coating, prolongs the time the catheter stays in the body, reduces the number of times the catheter is pulled out, and reduces the probability of the catheter being contaminated. It improves the safety of the intestinal obstruction catheter and reduces the risk of infection of the patient due to the intestinal obstruction catheter.
(2)本实用新型通过抗菌涂层的设置增加了肠梗阻导管的抗菌性能，从而进一步提高导管的安全性。同时通过抗菌性能提升增加导管在患者体内的时间，减少拔出重新开始介入的操作，减少病人痛苦，降低工作人员的工作量。(2) The utility model increases the antibacterial properties of the intestinal obstruction catheter by setting an antibacterial coating, thereby further improving the safety of the catheter. At the same time, the antibacterial performance is improved to increase the time the catheter stays in the patient's body, reduce the operation of pulling out and restarting the intervention, reduce the patient's pain, and reduce the workload of the staff.
(3)本实用新型通过肠内营养输送通道的设置，增加了导管为患者输送营养物质的功能。(3) The utility model increases the function of the catheter to deliver nutrients to the patient by setting up an enteral nutrition delivery channel.
(4)本实用新型通过侧孔的设置，增加了肠梗阻导管胃减压的功能。(4) The utility model increases the function of gastric decompression of intestinal obstruction catheter by setting the side hole.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为本实用新型的新型肠梗阻导管整体结构示意图。FIG1 is a schematic diagram of the overall structure of the novel intestinal obstruction catheter of the present invention.
图2为图1中A处的局部放大图。FIG. 2 is a partial enlarged view of point A in FIG. 1 .
图3为本实用新型的主导管的剖面图。FIG3 is a cross-sectional view of the main conduit of the present invention.
附图标记：主导管100，导管壁110，前球囊通道111，后球囊通道112，肠内营养输送通道113，导管内腔120，侧孔130，导向头200，前球囊300，后球囊400，前球囊活门500，后球囊活门600。Figure numerals: main catheter 100, catheter wall 110, front balloon channel 111, rear balloon channel 112, enteral nutrition delivery channel 113, catheter lumen 120, side hole 130, guide head 200, front balloon 300, rear balloon 400, front balloon valve 500, rear balloon valve 600.
具体实施方式Detailed ways
本实用新型附图仅用于示例性说明，不能理解为对本实用新型的限制。为了更好说明以下实施例，附图某些部件会有省略、放大或缩小，并不代表实际产品的尺寸；对于本领域技术人员来说，附图中某些公知结构及其说明可能省略是可以理解的。The drawings of the present invention are only used for illustrative purposes and cannot be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.
实施例1Example 1
结合图1至图3，本实施例提供一种新型肠梗阻导管，包括主导管100，所述主导管100的前端依次连接有导向头200、前球囊300和后球囊400，所述主导管100的末端连接有前球囊活门500、后球囊活门600和营养输送活门，所述主导管100的内壁设有抗菌涂层，所述主导管100的外壁设有润滑涂层。In conjunction with Figures 1 to 3, this embodiment provides a new intestinal obstruction catheter, including a main catheter 100, the front end of which is connected to a guide head 200, a front balloon 300 and a rear balloon 400 in sequence, the end of the main catheter 100 is connected to a front balloon valve 500, a rear balloon valve 600 and a nutrient delivery valve, the inner wall of the main catheter 100 is provided with an antibacterial coating, and the outer wall of the main catheter 100 is provided with a lubricating coating.
所述抗菌涂层为脱乙酰壳聚糖层。脱乙酰壳聚糖具有生物相容性、生物降解、生理惰性、抗菌性、抑真菌等多种性能，具有广泛的抗菌性，小分子的脱乙酰壳聚糖具有质子化铵,质子化铵与细菌带负电荷的细胞膜作用,吸附和聚沉细菌,同时穿透细胞壁进入细胞内,扰乱细菌的新陈代谢及合成而具有抗菌作用。The antibacterial coating is a deacetylated chitosan layer. Deacetylated chitosan has multiple properties such as biocompatibility, biodegradability, physiological inertness, antibacterial property, antifungal property, etc., and has a wide range of antibacterial properties. The small molecule deacetylated chitosan has protonated ammonium, which acts on the negatively charged cell membrane of bacteria to adsorb and precipitate bacteria, and at the same time penetrates the cell wall into the cell, disrupting the metabolism and synthesis of bacteria and having an antibacterial effect.
所述润滑涂层为聚乙烯基吡咯烷酮层。The lubricating coating is a polyvinyl pyrrolidone layer.
聚乙烯吡咯烷酮作为一种合成水溶性高分子化合物，具有水溶性高分子化合物的一般性质，在合成高分子中像聚乙烯吡咯烷酮这样既溶于水，又溶于大部分有机溶剂、毒性很低、生物相容性好。在润湿状态下，涂层被水激活，形成无色透明的水凝胶，传统肠梗阻导管在使用和拔出时患者的鼻咽异物感较强，亲水改性后能够增加导管的润滑性和减少摩擦力。As a synthetic water-soluble polymer compound, polyvinyl pyrrolidone has the general properties of water-soluble polymer compounds. Among synthetic polymers, polyvinyl pyrrolidone is soluble in water and most organic solvents, has low toxicity and good biocompatibility. In a wet state, the coating is activated by water to form a colorless and transparent hydrogel. When using and removing traditional intestinal obstruction catheters, patients have a strong foreign body sensation in the nasopharynx. After hydrophilic modification, the lubricity of the catheter can be increased and the friction can be reduced.
所述前球囊活门500用于前球囊300注入，所述后球囊活门600用于后球囊注400入，所述营养输送活门用于为肠内营养输送。The front balloon valve 500 is used for injecting the front balloon 300 , the rear balloon valve 600 is used for injecting the rear balloon 400 , and the nutrition delivery valve is used for enteral nutrition delivery.
所述主导管100包括导管壁110和导管内腔120，所述导管壁110内设有各自独立的前球囊通道111、后球囊通道112和肠内营养输送通道113。导管内腔120、前球囊通道111、后球囊通道112和肠内营养输送通道113互不相通。肠内营养输送通道113用于为患者输送营养物质。The main catheter 100 includes a catheter wall 110 and a catheter lumen 120. The catheter wall 110 is provided with a front balloon channel 111, a rear balloon channel 112 and an enteral nutrition delivery channel 113. The catheter lumen 120, the front balloon channel 111, the rear balloon channel 112 and the enteral nutrition delivery channel 113 are not connected to each other. The enteral nutrition delivery channel 113 is used to deliver nutrients to the patient.
所述前球囊通过前球囊通道111与前球囊活门500连通，所述后球囊通过后球囊通道112与后球囊活门600连通。The front balloon is communicated with the front balloon valve 500 through the front balloon channel 111 , and the rear balloon is communicated with the rear balloon valve 600 through the rear balloon channel 112 .
所述主导管100的前端设有若干个侧孔130，所述侧孔130连通导管内腔120。The front end of the main catheter 100 is provided with a plurality of side holes 130 , and the side holes 130 are connected to the catheter lumen 120 .
所述主导管100的长度为3m～3.5m。所述主导管100在前55cm处避开导向头200、前球囊300和后球囊400设有所述侧孔130，且前55cm处设有刻度标识。The main catheter 100 has a length of 3m to 3.5m. The main catheter 100 is provided with the side hole 130 at the front 55cm away from the guide head 200, the front balloon 300 and the rear balloon 400, and a scale mark is provided at the front 55cm.
所述主导管100前端设有经鼻插入部，所述经鼻插入部的主导管100的外径为10Fr。The front end of the main catheter 100 is provided with a nasal insertion portion, and the outer diameter of the main catheter 100 of the nasal insertion portion is 10Fr.
所述主导管100前端30cm为经鼻插入部。The front 30 cm of the main catheter 100 is the nasal insertion portion.
所述主导管100的材质为硅胶。The main conduit 100 is made of silicone.
本实施例提供的新型肠梗阻导管中，其抗菌涂层能够抑制肠道细菌在导管表面繁衍和在肠道内移位。另外，润滑涂层的设置增加了导管在患者体内的舒适感，延长导管在体内的时间，减少拔出次数，降低导管被污染的概率。如此提高了肠梗阻导管的安全性，较少患者因肠梗阻导管感染的风险。再有，通过肠内营养输送通道113的设置，增加了导管为患者输送营养物质的功能。其次，通过侧孔130的设置，增加了肠梗阻导管胃减压的功能。最后。通过抗菌性能和润滑性的提升增加导管在患者体内的时间，减少拔出重新开始介入的操作，减少病人痛苦，降低工作人员的工作量。In the novel intestinal obstruction catheter provided in this embodiment, its antibacterial coating can inhibit the growth of intestinal bacteria on the catheter surface and its displacement in the intestine. In addition, the provision of the lubricating coating increases the comfort of the catheter in the patient's body, prolongs the time the catheter stays in the body, reduces the number of times the catheter is pulled out, and reduces the probability of the catheter being contaminated. This improves the safety of the intestinal obstruction catheter and reduces the risk of infection of the patient due to the intestinal obstruction catheter. Furthermore, by providing the enteral nutrition delivery channel 113, the function of the catheter in delivering nutrients to the patient is increased. Secondly, by providing the side hole 130, the function of gastric decompression of the intestinal obstruction catheter is increased. Finally. By improving the antibacterial performance and lubricity, the time the catheter stays in the patient's body is increased, the operation of pulling out and re-intervention is reduced, the patient's pain is reduced, and the workload of the staff is reduced.
实施例2Example 2
本实施例提供一种新型肠梗阻导管，包括主导管100，所述主导管100的前端依次连接有导向头200、前球囊300和后球囊400，所述主导管100的末端连接有前球囊活门500、后球囊活门600和营养输送活门，所述主导管100的内壁设有抗菌涂层，所述主导管100的外壁设有润滑涂层。The present embodiment provides a novel intestinal obstruction catheter, including a main catheter 100, the front end of which is connected to a guide head 200, a front balloon 300 and a rear balloon 400 in sequence, the end of which is connected to a front balloon valve 500, a rear balloon valve 600 and a nutrient delivery valve, the inner wall of the main catheter 100 is provided with an antibacterial coating, and the outer wall of the main catheter 100 is provided with a lubricating coating.
所述抗菌涂层为脱乙酰壳聚糖层。脱乙酰壳聚糖具有生物相容性、生物降解、生理惰性、抗菌性、抑真菌等多种性能，具有广泛的抗菌性，小分子的脱乙酰壳聚糖具有质子化铵,质子化铵与细菌带负电荷的细胞膜作用,吸附和聚沉细菌,同时穿透细胞壁进入细胞内,扰乱细菌的新陈代谢及合成而具有抗菌作用。The antibacterial coating is a deacetylated chitosan layer. Deacetylated chitosan has multiple properties such as biocompatibility, biodegradability, physiological inertness, antibacterial property, antifungal property, etc., and has a wide range of antibacterial properties. The small molecule deacetylated chitosan has protonated ammonium, which acts on the negatively charged cell membrane of bacteria to adsorb and precipitate bacteria, and at the same time penetrates the cell wall into the cell, disrupting the metabolism and synthesis of bacteria and having an antibacterial effect.
所述润滑涂层为聚乙烯基吡咯烷酮层。The lubricating coating is a polyvinyl pyrrolidone layer.
聚乙烯吡咯烷酮作为一种合成水溶性高分子化合物，具有水溶性高分子化合物的一般性质，在合成高分子中像聚乙烯吡咯烷酮这样既溶于水，又溶于大部分有机溶剂、毒性很低、生物相容性好。在润湿状态下，涂层被水激活，形成无色透明的水凝胶，传统肠梗阻导管在使用和拔出时患者的鼻咽异物感较强，亲水改性后能够增加导管的润滑性和减少摩擦力。As a synthetic water-soluble polymer compound, polyvinyl pyrrolidone has the general properties of water-soluble polymer compounds. Among synthetic polymers, polyvinyl pyrrolidone is soluble in water and most organic solvents, has very low toxicity and good biocompatibility. In a wet state, the coating is activated by water to form a colorless and transparent hydrogel. When using and removing traditional intestinal obstruction catheters, patients have a strong foreign body sensation in the nasopharynx. After hydrophilic modification, the lubricity of the catheter can be increased and the friction can be reduced.
所述前球囊活门500用于前球囊300注入，所述后球囊活门600用于后球囊400注入，所述营养输送活门用于为肠内营养输送。The front balloon valve 500 is used for injecting the front balloon 300, the rear balloon valve 600 is used for injecting the rear balloon 400, and the nutrition delivery valve is used for enteral nutrition delivery.
所述主导管100包括导管壁110和导管内腔120，所述导管壁110内设有各自独立的前球囊通道111、后球囊通道112和肠内营养输送通道113。导管内腔120、前球囊通道111、后球囊通道112和肠内营养输送通道113互不相通。肠内营养输送通道113为患者输送营养物质。The main catheter 100 includes a catheter wall 110 and a catheter lumen 120. The catheter wall 110 is provided with a front balloon channel 111, a rear balloon channel 112 and an enteral nutrition delivery channel 113, each of which is independent. The catheter lumen 120, the front balloon channel 111, the rear balloon channel 112 and the enteral nutrition delivery channel 113 are not connected to each other. The enteral nutrition delivery channel 113 delivers nutrients to the patient.
所述前球囊300通过前球囊通道111与前球囊活门500连通，所述后球囊400通过后球囊通道112与后球囊活门600连通。The front balloon 300 is in communication with the front balloon valve 500 through the front balloon channel 111 , and the rear balloon 400 is in communication with the rear balloon valve 600 through the rear balloon channel 112 .
所述主导管100的前端设有若干个侧孔130，所述侧孔130连通导管内腔120。The front end of the main catheter 100 is provided with a plurality of side holes 130 , and the side holes 130 are connected to the catheter lumen 120 .
所述主导管100的长度为3m～3.5m。所述侧孔130仅设于前球囊300和后球囊400之间。The length of the main catheter 100 is 3 m to 3.5 m. The side hole 130 is only provided between the front balloon 300 and the rear balloon 400 .
所述主导管100前端设有经鼻插入部，所述经鼻插入部的主导管100的外径为10Fr。The front end of the main catheter 100 is provided with a nasal insertion portion, and the outer diameter of the main catheter 100 of the nasal insertion portion is 10Fr.
所述主导管100前端30cm为经鼻插入部。The front 30 cm of the main catheter 100 is the nasal insertion portion.
所述主导管100的材质为硅胶。The main conduit 100 is made of silicone.
显然，本实用新型的上述实施例仅仅是为清楚地说明本实用新型技术方案所作的举例，而并非是对本实用新型的具体实施方式的限定。凡在本实用新型权利要求书的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本实用新型权利要求的保护范围之内。Obviously, the above embodiments of the utility model are only examples for clearly explaining the technical solution of the utility model, and are not intended to limit the specific implementation methods of the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the utility model shall be included in the protection scope of the claims of the utility model.
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Assignee: FUJIAN COMBO MEDICAL TECHNOLOGY CO.,LTD. Assignor: THE SIXTH AFFILIATED HOSPITAL OF SUN YAT-SEN University Contract record no.: X2024980023059 Denomination of utility model: A new type of intestinal obstruction catheter Granted publication date: 20240531 License type: Common License Record date: 20241107 |