CN110251808A - Introducer sheath with porous structure in sheath tube body - Google Patents
Introducer sheath with porous structure in sheath tube body Download PDFInfo
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- CN110251808A CN110251808A CN201910674701.6A CN201910674701A CN110251808A CN 110251808 A CN110251808 A CN 110251808A CN 201910674701 A CN201910674701 A CN 201910674701A CN 110251808 A CN110251808 A CN 110251808A
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- 230000010339 dilation Effects 0.000 claims abstract description 27
- 230000017531 blood circulation Effects 0.000 claims abstract description 19
- 238000003384 imaging method Methods 0.000 claims abstract description 5
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 4
- 150000001621 bismuth Chemical class 0.000 claims description 3
- 238000012377 drug delivery Methods 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 210000004204 blood vessel Anatomy 0.000 abstract description 14
- 238000003780 insertion Methods 0.000 abstract description 7
- 230000037431 insertion Effects 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 2
- 238000001356 surgical procedure Methods 0.000 abstract 1
- 230000002792 vascular Effects 0.000 description 3
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000002439 hemostatic effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- XUBKPYAWPSXPDZ-UHFFFAOYSA-N [Ba].OS(O)(=O)=O Chemical compound [Ba].OS(O)(=O)=O XUBKPYAWPSXPDZ-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 208000028867 ischemia Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000017074 necrotic cell death Effects 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- A61M25/0067—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
- A61M25/007—Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
-
- 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
-
- 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
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0108—Steering means as part of the catheter or advancing means; Markers for positioning using radio-opaque or ultrasound markers
-
- 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
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0113—Mechanical advancing means, e.g. catheter dispensers
-
- 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
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0194—Tunnelling 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
- A61M25/0067—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
- A61M2025/0073—Tip designed for influencing the flow or the flow velocity of the fluid, e.g. inserts for twisted or vortex flow
-
- 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
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0194—Tunnelling catheters
- A61M2025/0197—Tunnelling catheters for creating an artificial passage within the body, e.g. in order to go around occlusions
-
- 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
- A61M2205/32—General characteristics of the apparatus with radio-opaque indicia
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
本发明公开了一种能增加血液流量带多孔结构的导管鞘，包括导管鞘以及和导管鞘管径相匹配的扩张管和若干预扩张管，预扩张管的试样和扩张管的长度形状一致，尺径不同，导管鞘的一端开设有若干通孔，所述导管鞘上靠近通孔部位嵌合有能在X光下显示的显影环。本发明在导管鞘的表面追加通孔的方式，增加血液流动通道，在不影响正常导管鞘使用情况下，增加血液流量，预防血管堵塞，从而达到延长导管鞘置入时间的目的，实现节约手术时间的目的，便于医生的操作，而X光显影物质则实现显影定位功能，使得医生可以把握导管鞘插入的位置，方便手术作业的进行，此外，采取多个不同孔径的预扩张管，便于血管被撕开导致病患的疼痛，增加手术的安全性。
The invention discloses a catheter sheath capable of increasing blood flow with a porous structure, including a catheter sheath, a dilation tube matching the diameter of the catheter sheath, and several pre-dilation tubes, and the sample of the pre-dilation tube has the same length and shape as the dilation tube , with different ruler diameters, a number of through holes are opened at one end of the catheter sheath, and a developing ring that can be displayed under X-ray is fitted on the catheter sheath near the through holes. The present invention adds a through hole on the surface of the catheter sheath to increase the blood flow channel, increase the blood flow without affecting the normal use of the catheter sheath, and prevent blood vessel blockage, thereby achieving the purpose of prolonging the insertion time of the catheter sheath and saving surgery. The purpose of time is to facilitate the doctor's operation, and the X-ray imaging material realizes the development and positioning function, so that the doctor can grasp the position of the catheter sheath insertion, and facilitate the operation. Being torn apart causes pain for the patient and increases the safety of the operation.
Description
技术领域technical field
本发明涉及经皮血管介入医疗器械相关领域，具体为一种鞘管管体带多孔结构的导管鞘。The invention relates to the related field of percutaneous vascular interventional medical devices, in particular to a catheter sheath with a porous structure in a sheath body.
背景技术Background technique
血管鞘是由扩张管、预扩张管、鞘管构成，鞘管管体通常由FEP、PE、PTFE、ETFE制成，是为血管造影导管、导引导管、电极导管或其他介入器械插入提供通道的一种器材。是建立血管与表皮之间由带止血阀的外鞘和能够通过导丝的中空内芯组成，用硅胶制成的止血阀在防止血液外逸同时，可以反复通过相应口径的导管，而血管壁不会受到损伤，其前端加工处理成锥状，以保证导管鞘可以顺利沿导丝送入。扩张管和鞘管之间的楔形过度设计要配合良好，使导管鞘的插入平滑、自然；止血阀可防止回血，并方便导丝和导管的操作；鞘身设计既有良好的柔韧性，又有很强的抗折、抗压性；鞘内腔便于通过介入器材，鞘壁薄，内腔大；有多种型号尺寸供选择。Vascular sheaths are composed of dilator tubes, pre-dilation tubes, and sheath tubes. The sheath tube body is usually made of FEP, PE, PTFE, and ETFE. It provides channels for the insertion of angiographic catheters, guiding catheters, electrode catheters, or other interventional devices. a kind of equipment. The hemostatic valve made of silica gel can prevent blood from escaping and can repeatedly pass through the catheter of the corresponding caliber, while the blood vessel wall It will not be damaged, and its front end is processed into a tapered shape to ensure that the introducer sheath can be smoothly fed along the guide wire. The wedge-shaped over-design between the dilation tube and the sheath should be well matched, so that the insertion of the introducer sheath is smooth and natural; the hemostatic valve can prevent blood return and facilitate the operation of the guide wire and catheter; the design of the sheath body has both good flexibility and It has strong resistance to bending and compression; the inner cavity of the sheath is convenient for passing interventional equipment, the sheath wall is thin, and the inner cavity is large; there are various models and sizes for selection.
目前在实施大支架或其他手术时需要使用到大血管鞘，医生在手术过程中需要在置入大导管鞘后一定时间拔出鞘管，以恢复病人血流，防止组织缺血坏死，大血管鞘置入血管后血管流量会明显下降。本发明通过对鞘管表面追加通孔的方式，增加血液流动通道，在不影响正常导管鞘的使用情况下，增加血液流量，从而达到延长导管鞘置入时间的目的。At present, large vascular sheaths are needed when performing large stents or other operations. During the operation, doctors need to pull out the sheath tubes after a certain period of time after placing large catheter sheaths to restore the patient's blood flow and prevent tissue ischemia. Necrosis, large blood vessels After the sheath is placed in the blood vessel, the blood flow will be significantly reduced. The present invention increases the blood flow channel by adding a through hole on the surface of the sheath, and increases the blood flow without affecting the use of the normal catheter sheath, thereby achieving the purpose of prolonging the insertion time of the catheter sheath.
发明内容Contents of the invention
本发明的目的在于提供一种能增加血液流量带多孔结构的导管鞘，以解决上述背景技术中提出的问题。The purpose of the present invention is to provide an introducer sheath with a porous structure capable of increasing blood flow, so as to solve the problems raised in the background art above.
为实现上述目的，本发明提供如下技术方案：一种能增加血液流量带多孔结构的导管鞘，包括导管鞘以及和导管鞘管径相匹配的扩张管和若干预扩张管，其中，所述预扩张管的试样和扩张管的长度形状一致，尺径不同，所述导管鞘的一端开设有若干通孔，所述导管鞘上靠近通孔部位嵌合有能在X光下显示的显影环，所述导管鞘的另一端连接有鞘管座，所述鞘管座的顶部连通有管道连接头，所述管道连接头的一端连接有透明软管，所述透明软管上安装有三通阀。In order to achieve the above object, the present invention provides the following technical solutions: a catheter sheath capable of increasing blood flow with a porous structure, including a catheter sheath and a dilation tube matching the diameter of the catheter sheath and several pre-dilation tubes, wherein the pre-dilation tube The sample of the dilation tube is the same length and shape as the dilation tube, but the diameter is different. One end of the catheter sheath is provided with a number of through holes, and a developing ring that can be displayed under X-ray is fitted on the catheter sheath near the through holes. , the other end of the catheter sheath is connected with a sheath holder, the top of the sheath holder is connected with a pipe connector, one end of the pipe connector is connected with a transparent hose, and a three-way valve is installed on the transparent hose .
优选的，若干所述通孔组成柱形结构，环绕于导管鞘前端的边侧。Preferably, the plurality of said through holes form a cylindrical structure and surround the side of the front end of the introducer sheath.
优选的，显影环为金属材料，和导管鞘为一体结构，导管鞘的管身含X光显影物质，为硫酸钡或者铋盐，在X光下能显影。Preferably, the developing ring is made of metal material, and is integrated with the catheter sheath. The tube body of the catheter sheath contains an X-ray imaging substance, which is barium sulfate or bismuth salt, and can be developed under X-rays.
优选的，鞘管座的内部为连通结构，并和导管鞘的内部相连通。Preferably, the interior of the sheath tube seat is a communication structure, and communicates with the interior of the catheter sheath.
优选的，透明软管远离鞘管座的一端连接有给药管道和冲洗管道。Preferably, the end of the transparent flexible tube away from the sheath tube base is connected with a drug delivery pipeline and a flushing pipeline.
与现有技术相比，本发明的有益效果是：本发明在导管鞘的表面追加通孔的方式，增加血液流动通道，在不影响正常导管鞘使用情况下，增加血液流量，预防血管堵塞，从而达到延长导管鞘置入时间的目的，实现节约手术时间的目的，便于医生的操作，而显影环则实现定位功能，使得医生可以把握导管鞘插入的位置，方便手术作业的进行，此外，采取多个不同孔径的预扩张管，便于血管被撕开导致病患的疼痛，增加手术的安全性。Compared with the prior art, the beneficial effect of the present invention is: the present invention adds a through hole on the surface of the catheter sheath to increase the blood flow channel, increase the blood flow without affecting the normal use of the catheter sheath, and prevent blood vessel blockage. In this way, the purpose of prolonging the insertion time of the catheter sheath is achieved, the purpose of saving operation time is realized, and it is convenient for the doctor to operate. A plurality of pre-expanded tubes with different pore diameters facilitate the tearing of the blood vessels and cause pain for the patient, increasing the safety of the operation.
附图说明Description of drawings
图1为本发明的主体结构示意图。Fig. 1 is a schematic diagram of the main structure of the present invention.
图中：1、导管鞘；2、通孔；3、管道连接头；4、鞘管座；5、透明软管；6、三通阀。In the figure: 1. Catheter sheath; 2. Through hole; 3. Pipe connector; 4. Sheath tube seat; 5. Transparent hose; 6. Three-way valve.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“设置”、“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "setting", "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, or It can be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.
请参阅图1，本发明提供一种技术方案：一种能增加血液流量带多孔结构的导管鞘，包括导管鞘1以及和导管鞘1管径相匹配的扩张管和若干预扩张管，其中，预扩张管的试样和扩张管的长度形状一致，尺径不同，导管鞘1的一端开设有若干通孔2，导管鞘1上靠近通孔2部位嵌合有能在X光下显示的显影环，导管鞘1的另一端连接有鞘管座4，鞘管座4的顶部连通有管道连接头3，管道连接头3的一端连接有透明软管5，透明软管5上安装有三通阀6。Referring to Fig. 1, the present invention provides a technical solution: an introducer sheath capable of increasing blood flow with a porous structure, including an introducer sheath 1 and an expansion tube matching the diameter of the introducer sheath 1 and several pre-expanded tubes, wherein, The length and shape of the sample of the pre-dilation tube and the dilation tube are the same, but the diameters are different. One end of the catheter sheath 1 is provided with a number of through holes 2, and the position near the through holes 2 on the catheter sheath 1 is embedded with a developing image that can be displayed under X-ray. The other end of the catheter sheath 1 is connected to the sheath tube holder 4, the top of the sheath tube holder 4 is connected to the pipe connector 3, and one end of the pipe connector 3 is connected to the transparent hose 5, and the transparent hose 5 is equipped with a three-way valve 6.
进一步的，若干通孔2组成柱形结构，环绕于导管鞘1前端的边侧，显影环为金属材料，和导管鞘1为一体结构，导管鞘1的管身含X光显影物质，为硫酸钡或者铋盐，在X光下能显影，鞘管座4的内部为连通结构，并和导管鞘1的内部相连通，透明软管5远离鞘管座4的一端连接有给药管道和冲洗管道。Further, several through holes 2 form a cylindrical structure, which surrounds the side of the front end of the catheter sheath 1, and the developing ring is made of metal material, which is integrated with the catheter sheath 1. The tube body of the catheter sheath 1 contains X-ray imaging material, which is sulfuric acid Barium or bismuth salts can be visualized under X-rays. The interior of the sheath tube seat 4 is a connected structure and communicates with the interior of the catheter sheath 1. The end of the transparent hose 5 away from the sheath tube seat 4 is connected with a drug delivery pipeline and a flushing tube. pipeline.
工作原理，使用时，首先使用穿刺针插入目标血管，插入导丝，拔出穿刺针，使用预扩张管，分别按照从小至大的顺序分别插入血管处并分别拔出，最后将扩张管插入至导管鞘1并插入血管处，移除扩张管，随后进行正常手术作业。Working principle, when in use, first use the puncture needle to insert the target blood vessel, insert the guide wire, pull out the puncture needle, use the pre-dilation tube, insert and pull out the blood vessel respectively in the order of small to large, and finally insert the dilation tube to the The introducer sheath 1 is inserted into the blood vessel, the dilation tube is removed, and then the normal operation is performed.
上述原理中选择尺径小于扩张管的若干预扩张管，分别按照从小至大的顺序分别插入血管处并分别拔出的目的是为了防止血管撕开，使其逐渐被撑开，使得手术进行更加顺利和安全，将扩张管插入至导管鞘1内的目的是支撑导管鞘1，便于将其放置入目标血管处。In the above principle, a number of pre-expanded tubes with smaller diameters than the expanded tubes are selected, inserted into the blood vessels in order from small to large, and pulled out respectively. Smooth and safe, the purpose of inserting the dilation tube into the introducer sheath 1 is to support the introducer sheath 1 and facilitate its placement into the target blood vessel.
上述步骤中，关于鞘管、扩张管和预扩张管的选取规格尺寸如下表所示：In the above steps, the selected specifications and sizes of the sheath tube, dilation tube and pre-dilation tube are shown in the table below:
结合上述表格，举例说明扩张管以及预扩张管的用法，例如需要使用22Fr的扩张管，则分别按顺序使用10Fr的预扩张管、14Fr的预扩张管、18Fr的预扩张管先对皮肤血管进行预扩张，这样血管就逐渐适应扩大的尺径，其他尺径的扩张管实用情况类推。Combined with the above table, illustrate the use of dilation tubes and pre-dilation tubes. For example, if you need to use 22Fr dilation tubes, use 10Fr pre-dilation tubes, 14Fr pre-dilation tubes, and 18Fr pre-dilation tubes in sequence. Pre-dilation, so that the blood vessel gradually adapts to the enlarged diameter, and the practical situation of dilated tubes with other diameters can be analogized.
本发明在导管鞘1的表面追加通孔2的方式，增加血液流动通道，在不影响正常导管鞘使用情况下，增加血液流量，预防血管堵塞，从而达到延长导管鞘1置入时间的目的，实现节约手术时间的目的，便于医生的操作，而X光显影物质则实现显影定位功能，使得医生可以把握导管鞘1插入的位置，方便手术作业的进行，此外，采取多个不同孔径的预扩张管，便于血管被撕开导致病患的疼痛，增加手术的安全性。The present invention adds a through hole 2 on the surface of the introducer sheath 1 to increase the blood flow channel, increase the blood flow without affecting the normal use of the introducer sheath, and prevent blood vessel blockage, thereby achieving the purpose of prolonging the insertion time of the introducer sheath 1. To achieve the purpose of saving operation time, it is convenient for doctors to operate, and the X-ray imaging material realizes the development and positioning function, so that doctors can grasp the position where the catheter sheath 1 is inserted, and facilitate the operation. The tube is convenient for the blood vessel to be torn apart, causing pain for the patient and increasing the safety of the operation.
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.
Claims (5)
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