CN109925588B - Interventional therapy catheter with improved ultrasonic sensitivity - Google Patents
Interventional therapy catheter with improved ultrasonic sensitivity Download PDFInfo
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- CN109925588B CN109925588B CN201910312915.9A CN201910312915A CN109925588B CN 109925588 B CN109925588 B CN 109925588B CN 201910312915 A CN201910312915 A CN 201910312915A CN 109925588 B CN109925588 B CN 109925588B
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Abstract
The invention discloses an interventional therapy catheter for improving ultrasonic sensitivity, which comprises a catheter body, wherein the catheter wall of the catheter body sequentially comprises an outer layer, an elastic connecting layer and an inner layer from outside to inside, a central through hole of the inner layer forms a guide wire channel, a plurality of side holes are formed in the catheter wall of the catheter body, an annular cavity is formed between the outer layer and the inner layer in the catheter body, the axial direction of the annular cavity is parallel to the axial direction of the catheter body, a plurality of elastic particles are filled in the annular cavity to form the elastic connecting layer, and the catheter also comprises a sleeve arranged in the side holes, and the sleeve is arranged along the axial direction of the side holes and is in interference fit with the inner walls of the side holes. According to the invention, the side holes are arranged, ultrasonic waves meet the interfaces of different media and can pass through the side holes to irregularly reflect in the guide wire channel, so that the detection sensitivity during ultrasonic detection can be improved, the detection precision is improved, the ultrasonic detection device is basically harmless to human health, and the needs of medical staff are met.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an interventional therapy catheter for improving ultrasonic sensitivity.
Background
The interventional therapy is a minimally invasive therapy by using modern high-tech means, namely, under the guidance of medical imaging equipment, special precise instruments such as a catheter, a guide wire and the like are introduced into a human body to diagnose and treat the in vivo pathological condition locally. The interventional therapy uses a digital technology, so that the visual field of a doctor is expanded, the guide wire prolongs the hands of the doctor by means of the catheter, and the incision (puncture point) of the guide wire is only in the size of rice grains, so that a plurality of diseases which cannot be treated in the past and have poor curative effects in surgical treatment or medical treatment, such as tumors, hemangiomas, various bleeding and the like, can be treated without cutting human tissues. The interventional therapy has the characteristics of no operation, small wound, quick recovery and good effect. Is a development trend of future medicine.
At present, the interventional catheter is used for a larger part of lesion types, and the position detection of the interventional catheter generally comprises X-ray detection and ultrasonic detection, but the long-term detection by adopting the X-ray irradiation has great negative effects on medical staff and patients, and if the ultrasonic detection is adopted, the problem of inaccurate measurement position exists, so that the treatment progress and the detection accuracy are affected.
Disclosure of Invention
Therefore, the invention aims to provide the interventional catheter with improved ultrasonic sensitivity, which can improve the detection sensitivity during ultrasonic detection, improve the detection precision, is basically harmless to human health and meets the needs of medical staff.
The utility model provides an improve ultrasonic sensitivity's interventional therapy pipe, includes the pipe body, the pipe wall of pipe body is from outer to interior including skin, elastic connection layer and inlayer in proper order, the central through-hole of inlayer forms the seal wire passageway, be provided with a plurality of side openings on the pipe wall of pipe body, the side opening irregularly distributes on the pipe wall of pipe body, the side opening run through the pipe wall of pipe body and with the seal wire passageway intercommunication, form the ring chamber in the pipe body between skin and the inlayer, the axial of ring chamber is parallel with the axial of pipe body, the ring intracavity is filled with a plurality of elastic particles and is formed the elastic connection layer, the pipe is still including setting up the sleeve in the side opening, the sleeve along the axial setting of side opening and with the inner wall interference fit of side opening.
Further, the side hole is an inclined hole, and the axis of the inclined hole is intersected with the axis of the catheter body.
Further, the included angle between the axis of the inclined hole and the axis of the catheter body is 30-47 degrees.
Further, the sleeve comprises a sleeve body, the sleeve body comprises a large barrel section and a small barrel section which are axially arranged along the sleeve body, and the side holes are correspondingly formed into stepped holes for installing the large barrel section and the small barrel section.
Further, the elastic particles are rubber particles, and the rubber particles are spherical particles with smooth appearance.
Further, one end of the catheter body is provided with a connector, the connector is detachably connected with the catheter body, and the connector is used for compacting elastic particles in the annular cavity.
Further, the connector includes the connector body, the connector body is the frustum, the center of connector body with the central through-hole intercommunication of pipe body, integrated into one piece has the ring post on the terminal surface of connector body, be provided with the external screw thread on the ring post, the ring chamber is located the inner wall of connector one end and corresponds and be provided with the internal screw thread.
Further, the catheter further comprises a connecting pipe, the connecting pipe is connected with the other end of the catheter body, the outer diameter of the connecting pipe is larger than that of the catheter body, and the inner cavity of the connecting pipe is communicated with the central through hole.
Further, the inner wall surface roughness Ra of the inner layer is > 3.2.
Further, the diameter of the side hole is 1.5-3 mm.
The invention has the beneficial effects that: the invention relates to a treatment catheter, which comprises a catheter body, wherein a plurality of side holes are arranged on the wall of the catheter body, the side holes are irregularly distributed on the wall of the catheter body, and the side holes penetrate through the wall of the catheter body and are communicated with a guide wire channel.
According to the invention, the 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, and the catheter body has certain elastic recovery capability by filling a plurality of elastic particles in the annular cavity, so that the capability of resisting elastic deformation is not influenced, the catheter can enter a bent blood vessel more easily, and the operation is convenient.
Drawings
In order to make the objects, technical solutions and advantageous effects of the present invention more clear, the present invention provides the following drawings for description:
FIG. 1 is a schematic view of a catheter body according to the present invention;
FIG. 2 is a schematic illustration of the connection of a connection tube to a catheter body;
FIG. 3 is a schematic structural view of a connector;
fig. 4 is a schematic structural view of the sleeve.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a catheter body according to the present invention, fig. 2 is a schematic structural view of a connection tube and a catheter body, fig. 3 is a schematic structural view of a connector, and fig. 4 is a schematic structural view of a sleeve. The interventional therapy catheter for improving ultrasonic sensitivity comprises a catheter body 1, wherein the catheter wall of the catheter body 1 sequentially comprises an outer layer 101, an elastic connecting layer 102 and an inner layer 103 from outside to inside, and the catheter wall in the embodiment refers to the inner side wall pointing along the radial direction of the catheter body 1 from the outer side wall of the catheter wall. The central through hole of the inner layer 103 forms a guide wire channel 104, a plurality of side holes 105 are arranged on the pipe wall of the catheter body 1, the side holes 105 are irregularly distributed on the pipe wall of the catheter body 1, can be distributed in the radial direction of the pipe wall, and are arranged along the axial direction of the catheter body 1. The side hole 105 runs through the pipe wall of the catheter body 1 and is communicated 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 parallel to the axial direction of the catheter body 1, a plurality of elastic particles are filled in the annular cavity to form the elastic connecting layer 102, the catheter further comprises a sleeve 2 arranged in the side hole 105, and the sleeve 2 is arranged along the axial direction of the side hole 105 and is in interference fit with the inner wall of the side hole 105.
According to the invention, the side hole 105 is arranged, ultrasonic waves meet the interfaces of different media and can pass through the side hole 105 to irregularly reflect in the guide wire channel 104, so that the detection sensitivity during ultrasonic detection can be improved, the detection precision is improved, the ultrasonic detection device is basically harmless to human health, and the needs of medical staff are met. According to the invention, the 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 parallel to the axial direction of the catheter body 1, and the catheter body 1 has a certain elastic recovery capability by filling a plurality of elastic particles in the annular cavity, and meanwhile, the capability of resisting elastic deformation is not influenced, so that the catheter can more easily enter a bent blood vessel, and the operation is convenient.
According to the embodiment, the sleeve 2 is arranged along the axial direction of the side hole 105 and in interference fit with the inner wall of the side hole 105, and the side hole 105 is intersected with the sealing ring cavity, so that the sleeve 2 plays a role in communication between the sealing ring cavity and the side hole, elastic particles are prevented from entering the side hole 105 to block the side hole 105, the structural strength of the inner wall of the side hole 105 can be enhanced, and the strength of the catheter body 1 cannot be changed even under the condition of punching.
In this embodiment, the side hole 105 is an inclined hole, and an axis of the inclined hole intersects with an axis of the catheter body 1. The included angle between the axis of the inclined hole and the axis of the catheter body 1 is 30-47 degrees. According to the embodiment, the inclined hole is formed, the inlet direction of the inclined hole is the direction that the catheter stretches into the blood vessel, so that the circulation of the blood vessel can be facilitated, and the probability of blocking the side hole by blood is reduced.
In this embodiment, the sleeve includes the sleeve body, the sleeve body includes big section of thick bamboo 201 and little section of thick bamboo 202 that set up along sleeve body axial, side opening 105 corresponds the formation and is used for installing big section of thick bamboo 201 and little section of thick bamboo 202's shoulder hole can make things convenient for sleeve 2's installation, and the installation is more firm.
In this embodiment, the elastic particles are rubber particles, and the rubber particles are spherical particles with smooth appearance. The spherical particles with smooth appearance are arranged, so that the particles can move mutually, the elastic recovery capability of the catheter body 1 is improved, and the easiness of the catheter entering a blood vessel is improved.
In this embodiment, one end of the catheter body 1 is provided with a connector 3, the connector 3 is detachably connected with the catheter body 1, and the connector 3 is used for compacting elastic particles in the annular cavity. The connector 3 includes connector body 301, connector body 301 is the frustum, connector body 301 the center with the central through-hole intercommunication of pipe body 1, integrated into one piece has the ring post 302 on the terminal surface of connector body 301, be provided with the external screw thread on the ring post 302, the ring chamber is located and corresponds to be provided with the internal screw thread on the inner wall of connector 3 one end. The connector 3 is in threaded connection with the catheter body 1, elastic particles in the annular cavity can be compressed through the annular column 302, and the elastic recovery capacity of the catheter body 1 can be adjusted to a certain extent by adjusting the compression force.
In this embodiment, the catheter further includes a connection pipe 4, the connection pipe 4 is connected to the other end of the catheter body 1, the outer diameter of the connection pipe 4 is greater than the outer diameter of the catheter body 1, and the inner cavity of the connection pipe 4 is communicated with the central through hole.
In this embodiment, the roughness Ra of the inner wall surface of the inner layer 103 is greater than 3.2, so as to improve the scattering capability of the ultrasonic wave in the catheter body 1, thereby improving the ultrasonic sensitivity of the catheter, being easy to detect, and ensuring the strength of the catheter body 1 while ensuring the better detection effect because the diameter of the side hole is 0.2-3 mm, preferably 2 mm.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (8)
1. Interventional therapy catheter for improving ultrasonic sensitivity, which is characterized in that: the catheter comprises a catheter body, wherein the wall of the catheter body sequentially comprises an outer layer, an elastic connecting layer and an inner layer from outside to inside, a central through hole of the inner layer forms a guide wire channel, a plurality of side holes are formed in the wall of the catheter body, the side holes are irregularly distributed in the wall of the catheter body and penetrate through the wall of the catheter body and are communicated with the guide wire 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 plurality of elastic particles are filled in the annular cavity to form the elastic connecting layer, the catheter further comprises a sleeve arranged in the side holes, and the sleeve is arranged along the axial direction of the side holes and is in interference fit with the inner wall of the side holes; the elastic particles are rubber particles, and the rubber particles are spherical particles with smooth surfaces; one end of the catheter body is provided with a connector, the connector is detachably connected with the catheter body, and the connector is used for compacting elastic particles in the annular cavity.
2. The ultrasound sensitivity enhancing interventional catheter of claim 1, wherein: the side hole is an inclined hole, and the axis of the inclined hole is intersected with the axis of the catheter body.
3. The ultrasound sensitivity enhancing interventional catheter of claim 2, wherein: the included angle between the axis of the inclined hole and the axis of the catheter body is 30-47 degrees.
4. An ultrasound sensitivity enhancing interventional catheter according to claim 3, wherein: the sleeve comprises a sleeve body, the sleeve body comprises a large cylinder section and a small cylinder section which are axially arranged along the sleeve body, and the side holes are correspondingly formed into stepped holes for installing the large cylinder section and the small cylinder section.
5. The ultrasound sensitivity enhancing interventional catheter of claim 1, wherein: the connector comprises a connector body, the connector body is frustum-shaped, the center of the connector body is communicated with a central through hole of the catheter body, an annular column is integrally formed on the end face of the connector body, external threads are arranged on the annular column, and internal threads are correspondingly arranged on the inner wall of one end of the connector in an annular cavity.
6. The ultrasound sensitivity enhancing interventional catheter of claim 5, wherein: the catheter also comprises a connecting pipe, the connecting pipe is connected with the other end of the catheter body, the outer diameter of the connecting pipe is larger than that of the catheter body, and the inner cavity of the connecting pipe is communicated with the central through hole.
7. The ultrasound sensitivity enhancing interventional catheter of claim 1, wherein: the roughness Ra of the inner wall surface of the inner layer is more than 3.2.
8. The ultrasound sensitivity enhancing interventional catheter of claim 1, wherein: the diameter of the side hole is 1.5-3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910312915.9A CN109925588B (en) | 2019-04-18 | 2019-04-18 | Interventional therapy catheter with improved ultrasonic sensitivity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910312915.9A CN109925588B (en) | 2019-04-18 | 2019-04-18 | Interventional therapy catheter with improved ultrasonic sensitivity |
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| CN109925588A CN109925588A (en) | 2019-06-25 |
| CN109925588B true CN109925588B (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910312915.9A Active CN109925588B (en) | 2019-04-18 | 2019-04-18 | Interventional therapy catheter with improved ultrasonic sensitivity |
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Citations (7)
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|---|---|---|---|---|
| US4909787A (en) * | 1986-08-14 | 1990-03-20 | Danforth John W | Controllable flexibility catheter with eccentric stiffener |
| DE69636690D1 (en) * | 1995-06-07 | 2006-12-21 | Medex Inc | catheter hub |
| CN103623493A (en) * | 2013-11-05 | 2014-03-12 | 珠海成富医疗器材有限公司 | Ultrasonic developing catheter and forming process |
| CN104667411A (en) * | 2015-03-13 | 2015-06-03 | 刘政 | Ultrasonic development conduit |
| CN106345041A (en) * | 2016-10-10 | 2017-01-25 | 许荣德 | Drainage catheter |
| CN207939709U (en) * | 2018-01-18 | 2018-10-02 | 泉州台商投资区五季网络有限公司 | A kind of automobile audio with reversing radar function |
| CN209827917U (en) * | 2019-04-18 | 2019-12-24 | 中国人民解放军陆军军医大学第二附属医院 | Interventional therapy catheter for improving ultrasonic sensitivity |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3685617B2 (en) * | 1998-03-31 | 2005-08-24 | テルモ株式会社 | catheter |
| US20040220612A1 (en) * | 2003-04-30 | 2004-11-04 | Swainston Kyle W | Slidable capture catheter |
| US8945160B2 (en) * | 2008-07-03 | 2015-02-03 | Hotspur Technologies, Inc. | Apparatus and methods for treating obstructions within body lumens |
| WO2015119153A1 (en) * | 2014-02-06 | 2015-08-13 | ニプロ株式会社 | Catheter |
-
2019
- 2019-04-18 CN CN201910312915.9A patent/CN109925588B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4909787A (en) * | 1986-08-14 | 1990-03-20 | Danforth John W | Controllable flexibility catheter with eccentric stiffener |
| DE69636690D1 (en) * | 1995-06-07 | 2006-12-21 | Medex Inc | catheter hub |
| CN103623493A (en) * | 2013-11-05 | 2014-03-12 | 珠海成富医疗器材有限公司 | Ultrasonic developing catheter and forming process |
| CN104667411A (en) * | 2015-03-13 | 2015-06-03 | 刘政 | Ultrasonic development conduit |
| CN106345041A (en) * | 2016-10-10 | 2017-01-25 | 许荣德 | Drainage catheter |
| CN207939709U (en) * | 2018-01-18 | 2018-10-02 | 泉州台商投资区五季网络有限公司 | A kind of automobile audio with reversing radar function |
| CN209827917U (en) * | 2019-04-18 | 2019-12-24 | 中国人民解放军陆军军医大学第二附属医院 | Interventional therapy catheter for improving ultrasonic sensitivity |
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