CN215741228U - Far-end passage guide catheter - Google Patents
Far-end passage guide catheter Download PDFInfo
- Publication number
- CN215741228U CN215741228U CN202122281280.6U CN202122281280U CN215741228U CN 215741228 U CN215741228 U CN 215741228U CN 202122281280 U CN202122281280 U CN 202122281280U CN 215741228 U CN215741228 U CN 215741228U
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- Prior art keywords
- catheter
- guide catheter
- distal
- far
- access guide
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- 239000004033 plastic Substances 0.000 claims abstract description 9
- 229920003023 plastic Polymers 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 6
- 239000007779 soft material Substances 0.000 claims description 4
- 238000009941 weaving Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 2
- 210000004204 blood vessel Anatomy 0.000 abstract description 19
- 238000007917 intracranial administration Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 239000008280 blood Substances 0.000 abstract description 3
- 210000004369 blood Anatomy 0.000 abstract description 3
- 208000001848 dysentery Diseases 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 14
- 101100008044 Caenorhabditis elegans cut-1 gene Proteins 0.000 description 3
- 208000007536 Thrombosis Diseases 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 230000003902 lesion Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- RFVNOJDQRGSOEL-UHFFFAOYSA-N 2-hydroxyethyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCO RFVNOJDQRGSOEL-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 210000001715 carotid artery Anatomy 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000001105 femoral artery Anatomy 0.000 description 1
- 229940100242 glycol stearate Drugs 0.000 description 1
- 230000002439 hemostatic effect Effects 0.000 description 1
- 229920001477 hydrophilic polymer Polymers 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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- Media Introduction/Drainage Providing Device (AREA)
- Materials For Medical Uses (AREA)
Abstract
The utility model provides a far-end passage guide catheter, which is provided with a Ruhr joint, a catheter sheath and a catheter body in sequence from a near end to a far end, wherein the head end of the catheter is provided with an oblique cut, and the catheter is composed of a three-layer structure and sequentially comprises a PTFE coating, a braided layer and a plastic layer from inside to outside; it can smoothly enter blood vessels and exert stronger blood drawing capability, and can conform to tortuous intracranial arterial blood vessels, so that the operation treatment process is more stable and smooth.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a distal access guide catheter.
Background
The far-end access guiding catheter is mainly used for conveying instruments such as a guide wire, a stent, a balloon and the like from an external femoral artery wound to the far end of a carotid artery or an intracranial artery through a human artery blood vessel in clinic. Due to various factors such as the tortuosity of arterial vessels, lesion positions, the sizes of blood vessels and the like of the human body, the distal access guiding catheters with different specifications are required to be used, so that the device is suitable for different lesion positions and different sizes of blood vessels. Meanwhile, the far-end passage guide catheter also needs to have larger near-end supporting force, a soft catheter head end, a larger inner cavity and good thrombus suction effect; therefore, it is important that the distal access guide catheter can smoothly enter the blood vessel and exert sufficient blood drawing ability.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a distal passage guide catheter which can smoothly enter a blood vessel and exert stronger blood drawing capability and can conform to a tortuous intracranial arterial blood vessel so as to ensure that the surgical treatment process is more stable and smooth.
The embodiment of the utility model is realized by the following technical scheme:
the utility model provides a far-end route guide catheter, guide catheter has set gradually luer joint, pipe sheath, pipe body by near-end to distal end, the head end of pipe has a scarf, just the pipe body comprises three layer construction, includes PTFE coating, weaving layer, plastic layer from inside to outside in proper order.
Further, the catheter tube body is formed by sequentially sleeving a plurality of catheters with different sizes.
Further, the lengths of the plurality of catheters increase in sequence from the proximal end to the distal end.
Furthermore, the diameters of the plurality of guide pipes are sequentially increased from the far end to the near end, and the diameters of the plurality of guide pipes are 3F-8F.
Further, the oblique incision is made of soft materials.
Further, the hardness of the catheter tube is gradually reduced from the proximal end to the head end.
Furthermore, the weaving layer is formed by alternately weaving single flat metal wires.
Further, the outer surface of the plastic layer is coated with a hydrophilic coating.
The technical scheme of the embodiment of the utility model at least has the following advantages and beneficial effects:
1. the utility model has reasonable design and simple structure, and the head end of the catheter is provided with the oblique incision, so that the sectional area of the head end of the catheter is larger, and the thrombus absorbing capacity is stronger; meanwhile, the oblique incision is beneficial to smoothly entering a blood vessel and smoothly passing through a tortuous or narrow diseased blood vessel in the using process, and the oblique incision at the head end of the catheter is made of a soft material.
2. According to the utility model, the catheter is arranged into a three-layer structure and sequentially comprises the PTFE coating layer, the woven layer and the plastic layer from inside to outside, so that the supporting performance of the catheter can be greatly improved, the catheter conforms to tortuous blood vessels, and the risk of bending and breaking is prevented.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a distal access guiding catheter according to embodiment 1 of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
fig. 3 is a schematic view of the catheter body of the present invention.
Icon: 1-oblique incision, 2-catheter tube, 21-PTFE coating, 22-braid, 23-plastic layer, 24-catheter, 3-catheter sheath, 4-Ruhr joint.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Example 1
A far-end pathway guiding catheter is provided with a Ruhr joint 4, a catheter sheath 3 and a catheter tube body 2 in sequence from a near end to a far end, wherein the head end of the catheter tube body 2 is provided with a bevel cut 1, so that the cross section area of the head end of the catheter tube body 2 is larger, and the thrombus absorption capacity is higher; meanwhile, the oblique cut 1 is beneficial to smoothly entering a blood vessel and smoothly passing through a tortuous or narrow diseased blood vessel in the using process, and the oblique cut 1 at the head end of the catheter tube body 2 is made of a soft material, so that the flexibility of the catheter tube body 2 can be improved, the blood vessel is not damaged, and the catheter tube body 2 conforms to the tortuous intracranial arterial blood vessel; in addition, the head end is provided with a developing ring, the developing ring develops under X-ray during operation, the developing ring is arranged to be an oblique opening, the supporting tip end is favorably not deformed, and the developing ring has a developing function.
The catheter tube body 2 is formed by a three-layer structure, and sequentially comprises a PTFE coating layer 21, a woven layer 22 and a plastic layer 23 from inside to outside, so that the structure can greatly increase the supporting performance of the catheter tube body 2, conform to tortuous blood vessels and prevent the risk of bending and breaking;
the catheter tube body 2 is formed by sequentially sleeving a plurality of catheters 24 with different sizes, so that a doctor can select a proper size specification to perform an operation according to the pathological change degree of different patients clinically, the catheters 24 with different specifications can be compatible, the catheters can be used and operated in a matched mode during the operation, and the matching and the fixation between every two adjacent catheters 24 are adjusted by utilizing a Y-shaped hemostatic valve during the operation; specifically, in the proximal to distal direction: a plurality of the length of pipe 24 increases in proper order, and a plurality of the diameter of pipe 24 reduces in proper order, and in this embodiment, pipe body 2 cup joints into by three not unidimensional pipe 24 in proper order, and by near-end to distal end direction: the diameter of the conduit 24 is 5F, 6F and 8F in sequence; and the lengths of the three conduits 24 increase in sequence; therefore, the catheter is suitable for arterial blood vessels with different sizes, the catheter 24 with a smaller size at the far end is soft and can smoothly pass through the inner cavity of the catheter 24 with a larger size at the near end, the catheter 24 at the far end is slightly longer in length and can reach blood vessels at the far end, the catheter 24 at the far end is soft, the flexibility of the catheter 24 is increased, and the catheter conforms to tortuous intracranial arterial blood vessels; while the proximal catheter 24 is stiffer and provides good pushing and supporting forces.
In this embodiment, the hardness of the catheter tube 2 gradually decreases from the proximal end to the head end, and the distal catheter tube 2 is softer, so that the flexibility of the catheter tube 2 is increased, and the catheter tube 2 conforms to tortuous intracranial arterial vessels; the near-end catheter body 2 is hard, can provide good pushing force and supporting force for a user, and has extremely high clinical value.
In this embodiment, the braided layer 22 is formed by alternately braiding single flat metal wires, so that the balloon guide catheter tube 2 has flexibility and bending performance, and can enter a bent blood vessel more easily.
In this embodiment, the outer surface of the plastic layer 23 is coated with a hydrophilic coating, and specifically, when the hydrophilic coating is treated, a hydrophilic polymer additive, a hydrophilic nano polymer additive, a polyethylene glycol stearate material, or a self-lubricating polymer material is adopted.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a far-end route guide catheter, guide catheter has set gradually luer joint, pipe body by near-end to distal end, its characterized in that, the head end of pipe body has a scarf, just the pipe body comprises three layer construction, includes PTFE coating, weaving layer, plastic layer from inside to outside in proper order.
2. The distal access guide catheter of claim 1, wherein the catheter tube is sleeved sequentially from a plurality of differently sized catheters.
3. The distal access guide catheter of claim 2, wherein the plurality of catheters increase in length sequentially in a proximal-to-distal direction.
4. The distal access guide catheter of claim 2, wherein the plurality of catheters increase in diameter in a distal to proximal direction, the plurality of catheters having a diameter of 3-8F.
5. The distal access guide catheter of claim 1, wherein the beveled cut is made of a soft material.
6. The distal access guide catheter of claim 1, wherein the catheter tube tapers in stiffness from the proximal end to the distal end.
7. The distal access guide catheter of claim 1, wherein the braid is alternately braided using single flat wires.
8. The distal access guide catheter of claim 1, wherein the plastic layer is coated on an outer surface with a hydrophilic coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122281280.6U CN215741228U (en) | 2021-09-18 | 2021-09-18 | Far-end passage guide catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122281280.6U CN215741228U (en) | 2021-09-18 | 2021-09-18 | Far-end passage guide catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215741228U true CN215741228U (en) | 2022-02-08 |
Family
ID=80089515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122281280.6U Active CN215741228U (en) | 2021-09-18 | 2021-09-18 | Far-end passage guide catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215741228U (en) |
-
2021
- 2021-09-18 CN CN202122281280.6U patent/CN215741228U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 610200 Chengdu Tianfu international biological city, Shuangliu District, Chengdu, Sichuan (Annex 305, building 4, No. 618, Fenghuang Road) Patentee after: Chengdu Xinchuang Medical Equipment Co.,Ltd. Address before: 610200 Chengdu Tianfu international biological city, Chengdu, Sichuan Province (618 Fenghuang Road, Shuangliu District) Patentee before: Chengdu bairuihengtong Medical Technology Co.,Ltd. |
|
| CP03 | Change of name, title or address |