CN218187521U - Quick exchange catheter device - Google Patents
Quick exchange catheter device Download PDFInfo
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- CN218187521U CN218187521U CN202221278198.6U CN202221278198U CN218187521U CN 218187521 U CN218187521 U CN 218187521U CN 202221278198 U CN202221278198 U CN 202221278198U CN 218187521 U CN218187521 U CN 218187521U
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- exchange catheter
- guide wire
- micro
- guide
- delivery port
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Abstract
The utility model discloses a quick exchange catheter device, including exchange pipe and stand pipe, exchange pipe inside is equipped with the exchange pipe inner chamber that runs through the setting along its length direction, set up the little seal wire delivery port that is linked together with exchange pipe inner chamber on exchange pipe's the lateral wall, the stand pipe is inserted in exchange pipe from little seal wire delivery port, the near-end and the little seal wire delivery port of stand pipe are linked together, the stand pipe can expand the distal end towards exchange pipe's distal end or compress to little seal wire delivery port one side, the utility model has the advantages of simple structure, little seal wire target in place easily, shorten operation time.
Description
Technical Field
The utility model relates to the technical field of medical equipment, specific quick exchange pipe device that says so.
Background
The patent refers to the field of 'surgical instruments, devices, or methods for the treatment of surgical diseases'.
Because the catheter for conveying the spring ring is different from the catheter for conveying the stent, after the spring ring is filled with the aneurysm, the catheter for conveying the spring ring needs to be withdrawn, and the catheter for conveying the stent is guided and delivered through the micro-guide wire again.
Disclosure of Invention
The utility model aims at solving the defects of the prior art and providing a rapid exchange catheter device which has simple structure, easy positioning of the micro guide wire and shortened operation time.
The utility model provides a technical scheme that its technical problem adopted is:
a rapid exchange catheter device, characterized by: the exchange catheter comprises an exchange catheter and a guide tube, wherein an exchange catheter inner cavity penetrating through the exchange catheter along the length direction is formed in the exchange catheter, a micro guide wire conveying opening communicated with the exchange catheter inner cavity is formed in the side wall of the exchange catheter, the guide tube is inserted into the exchange catheter from the micro guide wire conveying opening, the near end of the guide tube is communicated with the micro guide wire conveying opening, and the extensible far end of the guide tube faces the far end of the exchange catheter or is compressed to one side of the micro guide wire conveying opening; the micro guide wire firstly guides the catheter for conveying the spring ring to reach an aneurysm, the micro guide wire is withdrawn, the spring ring and the spring ring pushing guide rod reach the aneurysm along the catheter for conveying the spring ring and release the spring ring to fill the aneurysm, the spring ring pushing guide rod is withdrawn, the position of the catheter for conveying the spring ring is kept still, the micro guide wire arrives at the aneurysm again along the catheter for conveying the spring ring, after the micro guide wire is in place, the catheter for conveying the spring ring is withdrawn, the near end of the micro guide wire penetrates through the distal opening of the exchange catheter in an in vitro operation and penetrates out from the micro guide wire conveying opening through the guide tube, the near end of the micro guide wire is fixed, the exchange catheter moves in the blood vessel along the micro guide wire, after the exchange catheter arrives at the position, the micro guide wire is withdrawn, the stent and the stent conveying guide wire enter from the near end opening of the exchange catheter and reach the position of the micro guide wire conveying opening, due to the expandable and compressible characteristics of the guide tube, the stent can push the guide tube to the side close to the micro guide wire conveying opening of the micro guide wire, and can continue to move along the exchange catheter to reach the aneurysm and release.
Little seal wire delivery port department be connected with little seal wire delivery port shape assorted delivery port backup pad, the delivery port backup pad is the elasticity material, the delivery port backup pad can inwards rotate to support and to prop open also can block little seal wire delivery port on the inner wall of stand pipe with little seal wire delivery port, delivery port backup pad initial position is inwards opened, the inner wall of delivery port backup pad supports on the stand pipe inner wall, guarantee that the stand pipe is in expansion state and exchange pipe inner chamber intercommunication, be convenient for little seal wire wear out little seal wire delivery port, when the support is carried the seal wire and is taken the support to remove to the distal end by the near-end of exchange pipe, the stand pipe compression just drives the delivery port backup pad and rotates and block little seal wire delivery port under the propelling movement effect of support, play the effect of supporting the pipe wall, when the support through the in-process of little seal wire delivery port position with the back removal to the distal end, the automatic rebound of delivery port backup pad inwards rotates and makes the stand pipe expand from compression state.
The junction of delivery port backup pad and exchange pipe is located the near-end of little seal wire delivery port, and the delivery port backup pad is for by the near-end to distal end leanin to ensure that the messenger stand pipe that the delivery port backup pad can be smooth and easy expandes, ensure not influencing wearing out of little seal wire and transferring of exchange pipe, when the support is transferred and is reachd this position, can be again blocked little seal wire delivery port by smooth and easy promotion rotation.
Exchange pipe includes outer pipe, around spring and inlayer pipe, it establishes between inlayer pipe and outer pipe and spiral winding on the inlayer pipe to wind the spring, the diameter of wind spring in stand pipe position department is greater than the diameter at exchange pipe near-end, distal end position department, the diameter of inlayer pipe in stand pipe position department is greater than the diameter at exchange pipe near-end, distal end position department, inlayer pipe forms stand pipe compression accommodation space with the diameter setting around the spring in little seal wire delivery port one side, makes the support remove to the distal end from exchange pipe's near-end and reachs little seal wire delivery port position, pushes up the stand pipe in the stand pipe compression accommodation space to guarantee not to influence the transport of support.
Inner tube is equipped with direction inclined plane and wide footpath face in seal wire transfer port one side a little, the near-end of wide footpath face is connected to the distal end lateral wall of seal wire transfer port a little, and the distal end is connected with the near-end on direction inclined plane, the direction inclined plane is by the near-end to distal end leanin setting, and the setting on direction inclined plane is in order to play the transition effect, can guarantee not to influence the stand pipe and expand, and the stand pipe can compress to stand pipe compression accommodation space when guaranteeing again that the support delivers, does not influence the delivery of support.
The distal end position and the direction inclined plane distal end position parallel and level of stand pipe to can push the stand pipe open and make the stand pipe be arranged in stand pipe compression accommodation space when making the support carry, do not occupy exchange catheter inner chamber space.
The stand pipe is made of film materials such as PTFE, nylon and polyurethane.
The utility model has the advantages that: the micro guide wire firstly guides the catheter for conveying the spring ring to reach the aneurysm, the micro guide wire is withdrawn, the spring ring and the spring ring pushing guide rod reach the aneurysm along the catheter for conveying the spring ring and release the spring ring to fill the aneurysm, the spring ring pushing guide rod is withdrawn, the position of the catheter for conveying the spring ring is kept still, the micro guide wire arrives at the aneurysm again along the catheter for conveying the spring ring, after the micro guide wire is in place, the catheter for conveying the spring ring is withdrawn, in vitro operation, the near end of the micro guide wire penetrates through the far end opening of the exchange catheter and penetrates out of the micro guide wire conveying opening through the guide tube, the near end of the micro guide wire is fixed, the exchange catheter moves in the blood vessel along the micro guide wire, after the exchange catheter arrives at the position, the micro guide wire is withdrawn, the stent and the stent conveying guide wire enter from the near end opening of the exchange catheter and reach the position of the micro guide wire conveying opening, due to the expandable and compressible characteristics of the guide tube, the stent can push the guide tube to the side close to the micro guide wire conveying opening of the micro guide wire, the micro guide wire can move continuously along the exchange catheter until the micro guide wire is released, compared with the prior art, the problem that the micro guide wire is not easy to enter the blood vessel, the problem that the micro guide wire can be solved, the micro guide wire to enter the micro guide wire to be easily to enter the position, greatly saved, the micro guide wire conveying time of the micro guide wire, and the micro guide wire is conveyed, and the micro guide wire, the micro guide wire can be smoothly delivered.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 isbase:Sub>A sectional view taken atbase:Sub>A-base:Sub>A in fig. 1.
Fig. 3 is a sectional view taken at B-B in fig. 1.
Fig. 4 is an enlarged schematic view of fig. 1 at E.
Fig. 5 is a schematic view of stent delivery through a micro-guidewire delivery port configuration.
Fig. 6 is a sectional view at C-C in fig. 5.
Fig. 7 is a cross-sectional view taken at D-D in fig. 5.
Fig. 8 is a schematic view of a micro-guidewire and exchange catheter fit in a blood vessel.
Fig. 9 is a schematic view of stent delivery through a micro-guidewire delivery port configuration in a blood vessel.
Fig. 10 is a schematic view of a stent released from an exchange catheter in a blood vessel.
Reference numerals: the device comprises an exchange catheter-1, an outer layer tube-101, a winding spring-102, an inner layer tube-103, a guide inclined plane-1031, a wide diameter plane-1032, a micro guide wire delivery port-104, a delivery port support plate-105, a guide tube-2, a micro guide wire-3, a stent delivery guide wire-4, a stent-5, a blood vessel inner wall-6 and a guide tube compression accommodating space-7.
Detailed Description
The present invention will be described with reference to the accompanying drawings and examples.
As shown in the attached drawings, a rapid exchange catheter device comprises an exchange catheter 1 and a guide tube 2, wherein an exchange catheter inner cavity penetrating through the exchange catheter 1 along the length direction is arranged in the exchange catheter 1, a micro guide wire delivery port 104 communicated with the exchange catheter 1 inner cavity is formed in the side wall of the exchange catheter 1, the guide tube 2 is inserted into the exchange catheter 1 from the micro guide wire delivery port 104, the proximal end of the guide tube 2 is communicated with the micro guide wire delivery port 104, and the guide tube 2 can be unfolded to enable the distal end to face the distal end of the exchange catheter 1 or be compressed to one side of the micro guide wire delivery port 104; the micro guide wire 3 firstly guides the catheter for conveying the spring ring to reach the aneurysm, the micro guide wire 3 is withdrawn, the spring ring and the spring ring pushing guide rod reach the aneurysm along the catheter for conveying the spring ring and release the spring ring to fill the aneurysm, the spring ring pushing guide rod is withdrawn, the position of the catheter for conveying the spring ring is kept still, the micro guide wire 3 reaches the aneurysm again along the catheter for conveying the spring ring, the operation enables the micro guide wire 3 to directly reach the aneurysm position along the catheter for conveying the spring ring, compared with the prior art, the micro guide wire in-place time is greatly saved, after the micro guide wire 3 is in place, the catheter for conveying the spring ring is withdrawn, the near end of the micro guide wire 3 is penetrated from the far end opening of the exchange catheter 1 in the in-vitro operation, the micro guide wire is penetrated out from the micro guide wire conveying opening 104 through the guide tube 2, and the near end of the micro guide wire 3 is fixed, exchange pipe 1 moves in the blood vessel along little seal wire 3, exchange pipe 1 is after the position, withdraw from little seal wire 3, support and support conveying seal wire get into from exchange pipe 1's near-end opening, reach little seal wire delivery port 104 position, because of the deployable and compression characteristic of stand pipe 2, the support can push away stand pipe 2 to be close to little seal wire delivery port 104 one side, and continue to remove along exchange pipe 1, until reaching aneurysm department release, this kind of structural arrangement, compared with the prior art, can solve the difficult problem in place of little seal wire 3 secondary entering blood vessel, also very big time of little seal wire 3 reentry blood vessel of having saved, the setting of stand pipe 2, play the guide effect, guide little seal wire 3 can be smooth and easy to wear out from little seal wire delivery port 104, and can compress to little seal wire delivery port 104 one side and do not influence the delivery of support. In the prior art, an exchange catheter is not adopted, when the coil ring is filled in the aneurysm, if the coil ring pushing guide rod is withdrawn firstly, then the micro guide wire is conveyed to the aneurysm position along the catheter for conveying the coil ring, the catheter for conveying the coil ring is withdrawn, and then the catheter for conveying the stent is put on, the catheter sleeve of the conveying stent moves along the micro guide wire at the near end of the micro guide wire, the near end of the micro guide wire cannot be fixed outside the body, the position of the micro guide wire is easy to move in the process of delivering the catheter, so that the catheter for conveying the stent cannot be delivered in place.
The micro guide wire delivery port 104 is connected with a delivery port support plate 105 matched with the micro guide wire delivery port 104 in shape, the delivery port support plate 105 is made of elastic materials, the delivery port support plate 105 can rotate inwards to abut against the inner wall of the guide pipe 2 to prop the micro guide wire delivery port 104 open or block the micro guide wire delivery port 104, the delivery port support plate 105 is opened inwards at the initial position, the inner wall of the delivery port support plate 105 abuts against the inner wall of the guide pipe 2 to ensure that the guide pipe 2 is communicated with the inner cavity of the exchange catheter 1 in an unfolded state, so that the micro guide wire 3 can penetrate out of the micro guide wire delivery port 104 conveniently, when the stent delivery guide wire drives the stent to move from the near end to the far end of the exchange catheter 1, the guide pipe 2 is compressed under the pushing action of the stent and drives the delivery port support plate 105 to rotate to block the micro guide wire delivery port 104 to play a role in supporting the catheter wall, and when the stent moves from the position of the micro guide wire delivery port support 104 to the far end, the delivery port support plate 105 automatically rebounds to rotate inwards to enable the guide pipe 2 to be unfolded from the compressed state.
The joint of the delivery port support plate 105 and the exchange catheter 1 is positioned at the near end of the micro guide wire delivery port 104, the delivery port support plate 105 is inclined inwards from the near end to the far end, so that the guide tube 2 can be smoothly unfolded by the delivery port support plate 105, the penetration of the micro guide wire 3 and the transfer of the exchange catheter 1 are not influenced, and when the stent is transferred to the position, the stent can be smoothly pushed and rotated to block the micro guide wire delivery port 104.
The exchange catheter 1 comprises an outer layer tube 101, a winding spring 102 and an inner layer tube 103, wherein the winding spring 102 is arranged between the inner layer tube 103 and the outer layer tube 101 and is spirally wound on the inner layer tube 103, the outer layer tube 101 is fixed with the winding spring 102, the inner layer tube 103 is fixed with the winding spring 102, the diameter of the winding spring 102 at the position of the guide tube 2 is larger than that at the position of the proximal end and the distal end of the exchange catheter 1, the diameter of the inner layer tube 103 at the position of the guide tube 2 is larger than that at the position of the proximal end and the distal end of the exchange catheter 1, the diameters of the inner layer tube 103 and the winding spring 102 are arranged at one side of the micro-guide wire delivery opening 104 to form a guide tube compression accommodating space, so that the stent 5 moves from the proximal end to the distal end of the exchange catheter 1 to the position of the micro-guide wire delivery opening 104, and the guide tube 2 is pushed into the guide tube compression accommodating space 7 to ensure that the delivery of the stent 5 is not influenced.
As can be seen from fig. 2-3, the cross sections of the inner tube 103 and the coil spring 102 in fig. 2 are circular, in fig. 3, the outer tube 101 is tightly attached to the position of the micro-guide wire delivery port 104 on the side close to the micro-guide wire delivery port 104, the inner tube 103 and the coil spring 102 are similar to an ellipse, and a guide tube compression accommodating space 7 is left between the inner tube 103 and the guide tube 2.
As can be seen from FIGS. 6-7, when the stent enters the exchange catheter, the cross section of the inner tube 103 and the cross section of the coiled spring 102 in FIG. 6 are both circular, and in FIG. 7, the stent 5 is delivered to the position of the micro-guide wire delivery port 104 through the stent delivery guide wire 4, so that the guide tube 2 is pushed into the guide tube compression accommodating space 7.
The inner tube 103 is provided with a guide inclined surface 1031 and a wide diameter surface 1032 on one side of the micro guide wire delivery port 104, the near end of the wide diameter surface 1032 is connected to the far end side wall of the micro guide wire delivery port 104, the far end of the wide diameter surface 1032 is connected with the near end of the guide inclined surface 1031, the guide inclined surface 1031 is arranged in an inward inclined manner from the near end to the far end, and the guide inclined surface 1031 is arranged to play a transition role, so that not only can the expansion of the guide tube 2 be ensured to be not influenced, but also the guide tube can be compressed to the guide tube compression accommodating space 7 during the delivery of the stent without influencing the delivery of the stent 5.
The distal end position of the guide tube 2 is flush with the distal end position of the guide inclined surface 1031, so that the guide tube 2 can be pushed away when the stent 5 is delivered, and the guide tube 2 is positioned in the guide tube compression accommodating space 7, and the lumen space of the exchange catheter 1 is not occupied.
The guide pipe 2 is made of film materials such as PTFE, nylon and polyurethane.
The rapid exchange catheter device is used for aneurysm embolization in the embodiment, but not limited to the embodiment, the device can also be used for other intravascular interventional therapies, the secondary delivery time of the micro guide wire is shortened, and the problem that the micro guide wire is not easy to place is solved.
The utility model discloses during the use:
1. the femoral artery is punctured, the micro guide wire 3 firstly guides the catheter for conveying the spring ring to enter the inner wall 6 of the blood vessel to reach the aneurysm part, and the micro guide wire 3 is withdrawn;
2. the spring ring and the spring ring pushing guide rod reach the aneurysm along the catheter for conveying the spring ring and release the spring ring to fill the aneurysm, the spring ring pushing guide rod is withdrawn, and the position of the catheter for conveying the spring ring is kept still;
3. the micro guide wire 3 arrives at the aneurysm again along the catheter for conveying the spring ring, and the catheter for conveying the spring ring is withdrawn after the micro guide wire 3 is in place;
4. taking the exchange catheter 1, wherein a conveying port support plate 105 of the exchange catheter 1 in an initial state is in an inward opening state and is propped against the inner wall of the guide tube 2, and a far-end opening of the guide tube is communicated with a far-end opening of the exchange catheter;
5. in the operation in vitro, an operator inserts the near end of the micro guide wire 3 from the far end opening of the exchange catheter 1, passes through the guide tube 2 and passes out of the micro guide wire delivery port 104, and fixes the near end of the micro guide wire 3;
6. the exchange catheter 1 moves along the micro-guide wire 3 in the blood vessel, and after the exchange catheter 1 arrives, the micro-guide wire 3 is withdrawn;
7. the stent 5 and the stent delivery guide wire 4 enter from the near-end opening of the exchange catheter 1 to reach the position of the micro guide wire delivery port 104, due to the expandable and compressible characteristics of the guide tube 2, the stent 5 can push the guide tube 2 to the side close to the micro guide wire delivery port 104 and enter the guide tube compression accommodating space 7, at the moment, the delivery port support plate 105 rotates to block the micro guide wire delivery port 104, the stent 5 continuously moves along the exchange catheter 1 until reaching the aneurysm to be released, and after the position of the stent 5 exceeds the position of the micro guide wire delivery port 104, the guide tube 2 is gradually opened under the elastic force of the delivery port support plate 105;
8. the stent delivery guidewire 4 and the exchange catheter 1 are withdrawn.
Claims (7)
1. A rapid exchange catheter device, characterized by: the exchange catheter comprises an exchange catheter and a guide tube, wherein an exchange catheter inner cavity penetrating through the exchange catheter along the length direction is formed in the exchange catheter, a micro guide wire conveying opening communicated with the exchange catheter inner cavity is formed in the side wall of the exchange catheter, the guide tube is inserted into the exchange catheter from the micro guide wire conveying opening, the near end of the guide tube is communicated with the micro guide wire conveying opening, and the extensible far end of the guide tube faces the far end of the exchange catheter or is compressed to one side of the micro guide wire conveying opening.
2. The rapid exchange catheter device of claim 1, wherein: the conveying port supporting plate can rotate inwards to abut against the inner wall of the guide pipe to stretch the guide pipe open or block the micro guide wire conveying port.
3. A rapid exchange catheter device according to claim 2, wherein: the junction of the delivery port support plate and the exchange catheter is positioned at the near end of the micro guide wire delivery port, and the delivery port support plate is inwards inclined from the near end to the far end.
4. A rapid exchange catheter device according to claim 1, 2 or 3, wherein: the exchange catheter comprises an outer layer tube, a winding spring and an inner layer tube, wherein the winding spring is arranged between the inner layer tube and the outer layer tube and is spirally wound on the inner layer tube, the diameter of the winding spring at the position of the guide tube is larger than that at the position of the near end and the far end of the exchange catheter, the diameter of the inner layer tube at the position of the guide tube is larger than that at the position of the near end and the far end of the exchange catheter, and the diameters of the inner layer tube and the winding spring are arranged on one side of a micro guide wire conveying port to form a guide tube compression accommodating space.
5. The rapid exchange catheter device of claim 4, wherein: the inner tube is provided with a guide inclined plane and a wide diameter plane on one side of the micro guide wire delivery port, the near end of the wide diameter plane is connected with the far end side wall of the micro guide wire delivery port, the far end of the wide diameter plane is connected with the near end of the guide inclined plane, and the guide inclined plane is arranged in an inward inclined mode from the near end to the far end.
6. The rapid exchange catheter device of claim 5, wherein: the far end position of the guide tube is flush with the far end position of the guide inclined plane.
7. A rapid exchange catheter device according to claim 1 or 2 or 3 or 5 or 6, wherein: the guide pipe is made of PTFE films, nylon films and polyurethane films.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221278198.6U CN218187521U (en) | 2022-05-25 | 2022-05-25 | Quick exchange catheter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221278198.6U CN218187521U (en) | 2022-05-25 | 2022-05-25 | Quick exchange catheter device |
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| Publication Number | Publication Date |
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| CN218187521U true CN218187521U (en) | 2023-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221278198.6U Active CN218187521U (en) | 2022-05-25 | 2022-05-25 | Quick exchange catheter device |
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| CN (1) | CN218187521U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116440389A (en) * | 2023-06-20 | 2023-07-18 | 北京普益盛济科技有限公司 | Microtubule structure, microcatheter and method for manufacturing microtubule structure |
-
2022
- 2022-05-25 CN CN202221278198.6U patent/CN218187521U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116440389A (en) * | 2023-06-20 | 2023-07-18 | 北京普益盛济科技有限公司 | Microtubule structure, microcatheter and method for manufacturing microtubule structure |
| CN116440389B (en) * | 2023-06-20 | 2023-11-10 | 北京普益盛济科技有限公司 | Microcatheter and method for manufacturing microtubule structure |
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