技术领域Technical field
本发明涉及医疗器械技术领域，具体涉及一种提高超声敏感性的介入治疗导管。The invention relates to the technical field of medical devices, and in particular to an interventional treatment catheter that improves ultrasound sensitivity.
背景技术Background technique
介入治疗是利用现代高科技手段进行的一种微创性治疗--就是在医学影像设备的引导下，将特制的导管，导丝等精密器械，引入人体，对体内病态进行诊断和局部治疗。介入治疗应用数字技术，扩大了医生的视野，借助导管，导丝延长了医生的双手，它的切口(穿刺点),仅有米粒大小，不用切开人体组织，就可治疗许多过去无法治疗，必须手术治疗或内科治疗疗效欠佳的疾病，如肿瘤，血管瘤，各种出血等。介入治疗具有不开刀，创伤小，恢复快，效果好的特点。是未来医学的发展趋势。Interventional therapy is a minimally invasive treatment using modern high-tech means - under the guidance of medical imaging equipment, special catheters, guide wires and other precision instruments are introduced into the human body to diagnose and locally treat pathological conditions in the body. Interventional treatment uses digital technology to expand the doctor's field of vision. With the help of catheters and guidewires, the doctor's hands are extended. Its incision (puncture point) is only the size of a grain of rice. It can treat many diseases that could not be treated in the past without cutting through human tissue. Diseases that require surgical treatment or poor medical treatment, such as tumors, hemangioma, various types of bleeding, etc. Interventional treatment has the characteristics of no surgery, small trauma, fast recovery and good effect. It is the development trend of future medicine.
目前，较大部分的病变类型都会用到介入导管，对于介入导管的位置检测一般有X光射线检测和超声检测，但是长期采用X光射线照射进行检测对医护人员和病人均有很大的负面效果，如果采用超声检测又会存在测量位置不准的问题，影响治疗的进度和检测的准确性。At present, interventional catheters are used for most types of lesions. Generally, X-ray detection and ultrasonic detection are used to detect the position of interventional catheters. However, long-term use of X-ray irradiation for detection has great negative effects on both medical staff and patients. As a result, if ultrasonic testing is used, there will be problems with inaccurate measurement positions, which will affect the progress of treatment and the accuracy of testing.
发明内容Contents of the invention
有鉴于此，本发明的目的在于提供一种提高超声敏感性的介入治疗导管，可提高超声波检测时的检测敏感性，提高检测精度，而且对人体健康基本无害，满足了医护人员的需要。In view of this, the purpose of the present invention is to provide an interventional therapy catheter that improves ultrasonic sensitivity, which can improve detection sensitivity and detection accuracy during ultrasonic detection, is basically harmless to human health, and meets the needs of medical staff.
提高超声敏感性的介入治疗导管，包括导管本体，所述导管本体的管壁从外到内依次包括外层、弹性连接层和内层，所述内层的中心通孔形成导丝通道，所述导管本体的管壁上设置有若干侧孔，所述侧孔无规律地分布在导管本体的管壁上，所述侧孔贯穿导管本体的管壁且与所述导丝通道连通，所述外层和内层之间在导管本体内形成环腔，所述环腔的轴向与导管本体的轴向平行，所述环腔内填充有若干弹性颗粒形成所述弹性连接层，所述导管还包括设置在所述侧孔内的套筒，所述套筒沿着侧孔的轴向设置且与所述侧孔的内壁过盈配合。An interventional treatment catheter that improves ultrasound sensitivity includes a catheter body. The wall of the catheter body includes an outer layer, an elastic connection layer and an inner layer from the outside to the inside. The central through hole of the inner layer forms a guidewire channel. A number of side holes are provided on the wall of the catheter body. The side holes are irregularly distributed on the wall of the catheter body. The side holes penetrate the wall of the catheter body and are connected with the guidewire channel. An annular cavity is formed in the catheter body between the outer layer and the inner layer. The axial direction of the annular cavity is parallel to the axial direction of the catheter body. A number of elastic particles are filled in the annular cavity to form the elastic connection layer. The catheter It also includes a sleeve disposed in the side hole, the sleeve being disposed along the axial direction of the side hole and interference-fitting with the inner wall of the side hole.
进一步，所述侧孔为斜孔，所述斜孔的轴线与导管本体的轴线相交。Furthermore, the side hole is an oblique hole, and the axis of the oblique hole intersects with the axis of the catheter body.
进一步，所述斜孔的轴线与导管本体轴线之间的夹角为30°～47°。Further, the angle between the axis of the inclined hole and the axis of the catheter body is 30° to 47°.
进一步，所述套筒包括套筒本体，所述套筒本体包括沿套筒本体轴向设置的大筒段和小筒段，所述侧孔对应形成用于安装所述大筒段和小筒段的阶梯孔。Further, the sleeve includes a sleeve body, the sleeve body includes a large barrel section and a small barrel section arranged along the axial direction of the sleeve body, and the side holes are correspondingly formed for installing the large barrel section and the small barrel section. Step hole.
进一步，所述弹性颗粒为橡胶颗粒，所述橡胶颗粒为外表光滑的圆球型颗粒。Further, the elastic particles are rubber particles, and the rubber particles are spherical particles with a smooth appearance.
进一步，所述导管本体的一端设置有连接头，所述连接头与所述导管本体可拆卸连接，所述连接头用于压实所述环腔内的弹性颗粒。Further, one end of the conduit body is provided with a connector, the connector is detachably connected to the conduit body, and the connector is used to compact the elastic particles in the annular cavity.
进一步，所述连接头包括连接头本体，所述连接头本体呈锥台型，所述连接头本体的中心与所述导管本体的中心通孔连通，所述连接头本体的端面上一体成型有环柱，所述环柱上设置有外螺纹，所述环腔位于连接头一端的内壁上对应设置有内螺纹。Further, the connector includes a connector body, the connector body is in the shape of a frustum, the center of the connector body is connected with the central through hole of the conduit body, and the end surface of the connector body is integrally formed with Ring column, the ring column is provided with external threads, and the inner wall of the ring cavity located at one end of the connector is correspondingly provided with internal threads.
进一步，所述导管还包括连接管，所述连接管与导管本体的另一端相连，所述连接管的外径大于所述导管本体的外径，所述连接管的内腔与所述中心通孔连通。Further, the conduit further includes a connecting tube, the connecting tube is connected to the other end of the conduit body, the outer diameter of the connecting tube is larger than the outer diameter of the conduit body, and the inner cavity of the connecting tube communicates with the center. The holes are connected.
进一步，所述内层的内壁表面粗糙度Ra＞3.2。Further, the inner wall surface roughness of the inner layer is Ra>3.2.
进一步，所述侧孔的直径为1.5～3mm。Further, the diameter of the side hole is 1.5-3mm.
本发明的有益效果：本发明治疗导管，包括导管本体，导管本体的管壁上设置有若干侧孔，所述侧孔无规律地分布在导管本体的管壁上，所述侧孔贯穿导管本体的管壁且与所述导丝通道连通，本发明通过设置侧孔，超声波遇到不同介质的交界面，且可穿过侧孔在导丝通道内无规律地进行反射，可提高超声波检测时的检测敏感性，提高检测精度，而且对人体健康基本无害，满足了医护人员的需要。Beneficial effects of the present invention: The treatment catheter of the present invention includes a catheter body. A number of side holes are provided on the wall of the catheter body. The side holes are irregularly distributed on the wall of the catheter body. The side holes penetrate the catheter body. The tube wall is connected to the guide wire channel. In the present invention, by arranging side holes, ultrasonic waves encounter the interface of different media, and can pass through the side holes and be reflected irregularly in the guide wire channel, which can improve the time of ultrasonic detection. The detection sensitivity is improved, the detection accuracy is improved, and it is basically harmless to human health, meeting the needs of medical staff.
本发明所述外层和内层之间在导管本体内形成环腔，所述环腔的轴向与导管本体的轴向平行，通过在环腔内填充若干弹性颗粒，让导管本体具有一定的弹性恢复能力，同时不会影响抵抗弹性变形的能力，可以让导管更容易地进入弯曲的血管内，方便手术的进行。An annular cavity is formed in the catheter body between the outer layer and the inner layer of the present invention. The axial direction of the annular cavity is parallel to the axial direction of the catheter body. By filling a number of elastic particles in the annular cavity, the catheter body has a certain The elastic recovery ability, while not affecting the ability to resist elastic deformation, allows the catheter to enter curved blood vessels more easily and facilitates surgery.
附图说明Description of the drawings
为了使本发明的目的、技术方案和有益效果更加清楚，本发明提供如下附图进行说明：In order to make the purpose, technical solutions and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:
图1为本发明导管本体的结构示意图；Figure 1 is a schematic structural diagram of the catheter body of the present invention;
图2为连接管与导管本体的连接示意图；Figure 2 is a schematic diagram of the connection between the connecting tube and the catheter body;
图3为连接头的结构示意图；Figure 3 is a schematic structural diagram of the connector;
图4为套筒的结构示意图。Figure 4 is a schematic structural diagram of the sleeve.
具体实施方式Detailed ways
下面将结合附图，对本发明的优选实施例进行详细的描述。The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
图1为本发明导管本体的结构示意图，图2为连接管与导管本体的连接示意图，图3为连接头的结构示意图，图4为套筒的结构示意图。提高超声敏感性的介入治疗导管，包括导管本体1，所述导管本体1的管壁从外到内依次包括外层101、弹性连接层102和内层103，本实施例所述管壁从外到内指的是，从管壁的外侧壁沿导管本体1的径向指向内侧壁。所述内层103的中心通孔形成导丝通道104，所述导管本体1的管壁上设置有若干侧孔105，所述侧孔105无规律地分布在导管本体1的管壁上，可分布在管壁的径向，沿着导管本体1的轴向设置。所述侧孔105贯穿导管本体1的管壁且与所述导丝通道104连通，所述外层101和内层103之间在导管本体1内形成环腔，所述环腔的轴向与导管本体1的轴向平行，所述环腔内填充有若干弹性颗粒形成所述弹性连接层102，所述导管还包括设置在所述侧孔105内的套筒2，所述套筒2沿着侧孔105的轴向设置且与所述侧孔105的内壁过盈配合。Figure 1 is a schematic structural view of the catheter body of the present invention, Figure 2 is a schematic structural view of the connecting pipe and the catheter body, Figure 3 is a schematic structural view of the connector, and Figure 4 is a schematic structural view of the sleeve. An interventional treatment catheter that improves ultrasound sensitivity includes a catheter body 1. The wall of the catheter body 1 includes an outer layer 101, an elastic connection layer 102 and an inner layer 103 from the outside to the inside. In this embodiment, the tube wall starts from the outside. Inward refers to pointing from the outer wall of the tube wall to the inner wall along the radial direction of the catheter body 1 . The central through hole of the inner layer 103 forms a guide wire channel 104, and a number of side holes 105 are provided on the wall of the catheter body 1. The side holes 105 are irregularly distributed on the wall of the catheter body 1, so that the guide wire channel 104 can be formed. Distributed in the radial direction of the pipe wall and arranged along the axial direction of the catheter body 1. The side hole 105 penetrates the wall of the catheter body 1 and is connected with the guide wire channel 104. An annular cavity is formed in the catheter body 1 between the outer layer 101 and the inner layer 103. The axial direction of the annular cavity is in line with the The axial direction of the catheter body 1 is parallel, and the annular cavity is filled with a number of elastic particles to form the elastic connection layer 102. The catheter also includes a sleeve 2 arranged in the side hole 105. The sleeve 2 is arranged along the The side hole 105 is arranged in the axial direction and has an interference fit with the inner wall of the side hole 105 .
本发明通过设置侧孔105，超声波遇到不同介质的交界面，且可穿过侧孔105在导丝通道104内无规律地进行反射，可提高超声波检测时的检测敏感性，提高检测精度，而且对人体健康基本无害，满足了医护人员的需要。本发明导管外层101和内层103之间在导管本体1内形成环腔，所述环腔的轴向与导管本体1的轴向平行，通过在环腔内填充若干弹性颗粒，让导管本体1具有一定的弹性恢复能力，同时不会影响抵抗弹性变形的能力，可以让导管更容易地进入弯曲的血管内，方便手术的进行。By arranging side holes 105 in the present invention, ultrasonic waves encounter the interface of different media, and can pass through the side holes 105 and be reflected irregularly in the guide wire channel 104, which can improve the detection sensitivity and detection accuracy during ultrasonic detection. It is basically harmless to human health and meets the needs of medical staff. An annular cavity is formed in the catheter body 1 between the outer layer 101 and the inner layer 103 of the catheter of the present invention. The axial direction of the annular cavity is parallel to the axial direction of the catheter body 1. By filling a number of elastic particles in the annular cavity, the catheter body can 1. It has a certain elastic recovery ability without affecting the ability to resist elastic deformation. It allows the catheter to enter curved blood vessels more easily and facilitates surgery.
本实施例通过设置套筒2，套筒2沿着侧孔105的轴向设置且与所述侧孔105的内壁过盈配合，由于侧孔105与密封环腔是相交的，因此设置套筒2起到一个可密封环腔与侧孔之间连通的作用，防止弹性颗粒进入侧孔105内堵塞侧孔105，也可以加强侧孔105内壁处的结构强度，即使在打孔了情况下也不会改变导管本体1的强度。In this embodiment, the sleeve 2 is provided along the axial direction of the side hole 105 and interference-fits with the inner wall of the side hole 105. Since the side hole 105 intersects with the sealing ring cavity, the sleeve 2 is provided. 2. It serves as a sealable connection between the ring cavity and the side hole, preventing elastic particles from entering the side hole 105 and blocking the side hole 105. It can also strengthen the structural strength of the inner wall of the side hole 105, even if it is drilled. The strength of the catheter body 1 will not be changed.
本实施例中，所述侧孔105为斜孔，所述斜孔的轴线与导管本体1的轴线相交。所述斜孔的轴线与导管本体1轴线之间的夹角为30°～47°。本实施例通过设置斜孔，斜孔的入口方向为导管伸入血管的方向，这样可以方便血管的流通，减少血液堵塞侧孔的几率。In this embodiment, the side hole 105 is an oblique hole, and the axis of the oblique hole intersects with the axis of the catheter body 1 . The angle between the axis of the inclined hole and the axis of the catheter body 1 is 30° to 47°. In this embodiment, an oblique hole is provided, and the entrance direction of the oblique hole is the direction in which the catheter extends into the blood vessel, which can facilitate the circulation of the blood vessel and reduce the probability of blood blocking the side hole.
本实施例中，所述套筒包括套筒本体，所述套筒本体包括沿套筒本体轴向设置的大筒段201和小筒段202，所述侧孔105对应形成用于安装所述大筒段201和小筒段202的阶梯孔，可以方便套筒2的安装，安装更为稳固。In this embodiment, the sleeve includes a sleeve body, which includes a large barrel section 201 and a small barrel section 202 arranged along the axial direction of the sleeve body. The side holes 105 are correspondingly formed for installing the large barrel. The stepped holes in the section 201 and the small barrel section 202 can facilitate the installation of the sleeve 2 and make the installation more stable.
本实施例中，所述弹性颗粒为橡胶颗粒，所述橡胶颗粒为外表光滑的圆球型颗粒。设置外表光滑的圆球型颗粒，让颗粒之间可相互运动，提高了导管本体1的弹性恢复能力，提高了导管进入血管的容易度。In this embodiment, the elastic particles are rubber particles, and the rubber particles are spherical particles with a smooth appearance. The spherical particles with smooth appearance are arranged so that the particles can move with each other, which improves the elastic recovery ability of the catheter body 1 and improves the ease of the catheter entering the blood vessel.
本实施例中，所述导管本体1的一端设置有连接头3，所述连接头3与所述导管本体1可拆卸连接，所述连接头3用于压实所述环腔内的弹性颗粒。所述连接头3包括连接头本体301，所述连接头本体301呈锥台型，所述连接头本体301的中心与所述导管本体1的中心通孔连通，所述连接头本体301的端面上一体成型有环柱302，所述环柱302上设置有外螺纹，所述环腔位于连接头3一端的内壁上对应设置有内螺纹。连接头3与导管本体1螺纹连接，可以通过环柱302压紧环腔内的弹性颗粒，调整压紧力可以一定程度上调整导管本体1的弹性恢复能力。In this embodiment, one end of the catheter body 1 is provided with a connector 3. The connector 3 is detachably connected to the catheter body 1. The connector 3 is used to compact the elastic particles in the annular cavity. . The connector 3 includes a connector body 301. The connector body 301 is in the shape of a frustum. The center of the connector body 301 is connected to the central through hole of the catheter body 1. The end surface of the connector body 301 is A ring post 302 is integrally formed on the top, and the ring post 302 is provided with external threads. The inner wall of the ring cavity located at one end of the connector 3 is correspondingly provided with internal threads. The connector 3 is threadedly connected to the catheter body 1 and can compress the elastic particles in the annular cavity through the ring column 302. Adjusting the pressing force can adjust the elastic recovery ability of the catheter body 1 to a certain extent.
本实施例中，所述导管还包括连接管4，所述连接管4与导管本体1的另一端相连，所述连接管4的外径大于所述导管本体1的外径，所述连接管4的内腔与所述中心通孔连通。In this embodiment, the conduit further includes a connecting tube 4, which is connected to the other end of the conduit body 1. The outer diameter of the connecting tube 4 is larger than the outer diameter of the conduit body 1. The connecting tube 4 is connected to the other end of the conduit body 1. The inner cavity of 4 is connected with the central through hole.
本实施例中，所述内层103的内壁表面粗糙度Ra＞3.2，可以提高超声波在导管本体1内的的散射能力，从而提高本导管的超声敏感性，易于检测，侧孔的直径为0.2～3mm，优选为2mm，可以再保证更好的检测效果的同时，保证导管本体1的强度。In this embodiment, the inner wall surface roughness of the inner layer 103 is Ra>3.2, which can improve the scattering ability of ultrasonic waves in the catheter body 1, thereby improving the ultrasonic sensitivity of the catheter and making it easy to detect. The diameter of the side hole is 0.2 ~3mm, preferably 2mm, which can ensure better detection results and at the same time ensure the strength of the catheter body 1.
最后说明的是，以上实施例仅用以说明本发明的技术方案而非限制，尽管参照较佳实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的宗旨和范围，其均应涵盖在本发明的权利要求范围当中。Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified. Modifications or equivalent substitutions without departing from the spirit and scope of the technical solution of the present invention shall be included in the scope of the claims of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910312915.9ACN109925588B (en) | 2019-04-18 | 2019-04-18 | Interventional therapy catheter with improved ultrasonic sensitivity |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910312915.9ACN109925588B (en) | 2019-04-18 | 2019-04-18 | Interventional therapy catheter with improved ultrasonic sensitivity |
| Publication Number | Publication Date |
|---|---|
| CN109925588A CN109925588A (en) | 2019-06-25 |
| CN109925588Btrue CN109925588B (en) | 2023-10-20 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910312915.9AExpired - Fee RelatedCN109925588B (en) | 2019-04-18 | 2019-04-18 | Interventional therapy catheter with improved ultrasonic sensitivity |
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| CN (1) | CN109925588B (en) |
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| Publication number | Publication date |
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| CN109925588A (en) | 2019-06-25 |
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| Date | Code | Title | Description |
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| SE01 | Entry into force of request for substantive examination | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | Granted publication date:20231020 | |
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