CN214343885U - Bendable double-cavity micro catheter assembly - Google Patents
Bendable double-cavity micro catheter assembly Download PDFInfo
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- CN214343885U CN214343885U CN202022906278.9U CN202022906278U CN214343885U CN 214343885 U CN214343885 U CN 214343885U CN 202022906278 U CN202022906278 U CN 202022906278U CN 214343885 U CN214343885 U CN 214343885U
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- branch pipe
- guide wire
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Abstract
The utility model relates to the technical field of medical equipment, in particular to little pipe assembly of adjustable curved two-chamber. The utility model discloses a little pipe assembly of two-chamber of can bending includes the little pipe of two-chamber and angle adjustment mechanism, the pipe of two-chamber include straight tube section and integrated into one piece set up in the branch pipe section of the far end of straight tube section and the deformation of can buckling, be equipped with the first thread guide chamber and the second thread guide chamber of mutual independence in the little pipe of two-chamber, the both ends in first thread guide chamber link up the near-end of straight tube section and the end of branch pipe section, the both ends in second thread guide chamber link up the far end of straight tube section and straight tube section lateral wall is close to the near-end, angle adjustment mechanism is used for adjusting the branch pipe section is relative to the angle of buckling of straight tube section. The advantages are that: reasonable in design, convenient operation can make the seal wire get into the branch artery very easily, has reduced the operation degree of difficulty, has shortened the operation time.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to little pipe assembly of adjustable curved two-chamber.
Background
Bifurcation lesion treatment is one of the technical key points and difficulties of the existing coronary intervention treatment, and the complicated coronary bifurcation lesion often causes that a guide wire cannot pass through due to angular distortion or calcified occlusion of side branches. The existing double-cavity micro catheter is difficult to guide a guide wire to rapidly enter a side branch for protection and intervention due to the lack of a personalized head end design, so that the operation time and the operation risk are increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a two-chamber microcatheter subassembly of adjustable bending is provided, the effectual defect of overcoming prior art.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
the utility model provides a little catheter assembly of adjustable two-chamber that bends, including the little catheter of two-chamber, and angle adjustment mechanism, the little catheter of above-mentioned two-chamber includes straight tube section and integrated into one piece set up in the distal end of above-mentioned straight tube section and the branch pipeline section of buckling deformation, be equipped with first seal wire chamber and the second seal wire chamber of mutual independence in the little catheter of above-mentioned two-chamber, the both ends in above-mentioned first seal wire chamber link up the near-end of above-mentioned straight tube section and the end of above-mentioned branch pipeline section, the both ends in above-mentioned second seal wire chamber link up the distal end of above-mentioned straight tube section and above-mentioned straight tube section lateral wall is close to the near-end, above-mentioned angle adjustment mechanism is used for adjusting the angle of buckling of above-mentioned branch pipeline section for above-mentioned straight tube section.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Further, the far end of the straight pipe section and the periphery of the tail end of the branch pipe section are provided with developing rings.
Further, the angle adjusting mechanism is an outer sleeve sleeved outside the straight pipe section, in an initial state, the branch pipe section is bent relative to the straight pipe section, the outer sleeve can move along the straight pipe section and can move to a far end to be sleeved outside the branch pipe section, and the branch pipe section is forced to bend and deform.
Further, the angle adjusting mechanism comprises a sleeve, a winding mechanism and two bending adjusting steel wires, one end of the sleeve is fixed at the proximal end of the double-cavity micro catheter, the other end of the sleeve is provided with a guide wire port which corresponds to the first guide wire cavity and through which a guide wire passes, the winding mechanism is arranged on the sleeve, the two bending adjusting steel wires are respectively embedded in matched channels in the side walls of the two sides of the double-cavity micro catheter along the length direction of the double-cavity micro catheter, one ends of the two bending adjusting steel wires respectively penetrate out of the proximal end of the double-cavity micro catheter and are wound on the winding mechanism in opposite directions, the other ends of the two bending adjusting steel wires are respectively connected and fixed with the two sides of the tail end of the branch pipe section, and the winding mechanism is used for adjusting the two bending adjusting steel wires to be wound one by the other and released, so as to adjust the bending angle of the branch pipe section.
Further, the winding mechanism comprises a rotating wheel and a rotating shaft, a hole is formed in the side wall of the sleeve, the rotating wheel is arranged in the sleeve, a part of the rotating wheel penetrates through the hole and extends out of the sleeve, the rotating shaft is coaxially connected with the rotating wheel and is rotatably connected with the inner wall of the sleeve, one ends of the two bending steel wires are wound on the winding mechanism in opposite directions, the rotating wheel is stirred by external force to rotate, the rotating wheel drives the rotating shaft to rotate, and the two bending steel wires are adjusted to be tightened and released one by one.
The utility model has the advantages that: reasonable in design, convenient operation can make the seal wire get into the branch artery very easily, has reduced the operation degree of difficulty, has shortened the operation time.
Drawings
FIG. 1 is a schematic structural view of one embodiment of an adjustable-bend dual-lumen microcatheter assembly of the present invention;
FIG. 2 is a first schematic structural view of another embodiment of an adjustable-bend dual-lumen microcatheter assembly of the present invention;
FIG. 3 is a partial cross-sectional view of another embodiment of an adjustable-bend dual lumen microcatheter assembly of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a double lumen microcatheter; 2. an angle adjusting mechanism; 3. a developing ring; 11. a straight pipe section; 12. a branch pipe section; 21. a sleeve; 22. a rotating wheel; 23. a rotating shaft; 24. and (5) bending the steel wire.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Example one
As shown in fig. 1, the bendable dual-lumen microcatheter assembly of the present embodiment includes a dual-lumen microcatheter 1 and an angle adjusting mechanism 2, wherein the dual-lumen microcatheter 1 includes a straight tube section 11 and a branch tube section 12 integrally formed at a distal end of the straight tube section 11 and capable of being bent and deformed, the dual-lumen microcatheter 1 is provided therein with a first guidewire lumen and a second guidewire lumen independent of each other, two ends of the first guidewire lumen penetrate through a proximal end of the straight tube section 11 and a distal end of the branch tube section 12, two ends of the second guidewire lumen penetrate through a distal end of the straight tube section 11 and a sidewall of the straight tube section 11 near the proximal end, and the angle adjusting mechanism 2 is configured to adjust a bending angle of the branch tube section 12 relative to the straight tube section 11;
the angle adjusting mechanism 2 is an outer sleeve sleeved outside the straight pipe section 11, and in an initial state, the branch pipe section 12 is bent relative to the straight pipe section 11, and the outer sleeve can move along the straight pipe section 11 and can move to a far end to be sleeved outside the branch pipe section 12 and force the branch pipe section 12 to bend and deform.
The operation process is as follows:
in an initial state, the outer sleeve is positioned outside the straight pipe section 11 and the branch pipe section 12 of the double-cavity micro catheter 1, and the double-cavity micro catheter 1 is in a linear shape;
before an operation, a doctor firstly measures an angle between a trunk and a branch of an artery of a patient and then selects a correspondingly bent double-cavity micro catheter 1 with an adjustable bend; in the operation, a doctor firstly conveys the guide wire a into the blood vessel of a patient, then inserts the tail end of the guide wire a into the double-cavity micro catheter 1 from the inlet of the guide wire a of the straight tube section 11, and leads the guide wire a to penetrate out from the outlet of the guide wire a on the straight tube section 11; secondly, the double-cavity micro catheter 1 is conveyed to the junction of the main trunk and the branch in the artery along the guide wire a; then slowly withdrawing the outer sleeve in the direction far away from the far end of the straight pipe section 11, gradually releasing the constraint of the outer sleeve on the branch pipe section 12, and slowly recovering the original shape of the branch pipe section 12 and entering a branch artery; finally, a guide wire b is placed along the entrance of the guide wire b on the double-cavity micro-catheter 1, and the guide wire b can enter the branch artery from the exit of the guide wire b.
Example two
As shown in fig. 2 and 3, the bendable dual-lumen microcatheter assembly of the present embodiment includes a dual-lumen microcatheter 1 and an angle adjusting mechanism 2, wherein the dual-lumen microcatheter 1 includes a straight tube section 11 and a branch tube section 12 integrally formed at a distal end of the straight tube section 11 and capable of being bent and deformed, the dual-lumen microcatheter 1 is provided with a first guidewire lumen and a second guidewire lumen independent of each other, two ends of the first guidewire lumen penetrate through a proximal end of the straight tube section 11 and a distal end of the branch tube section 12, two ends of the second guidewire lumen penetrate through a distal end of the straight tube section 11 and a side wall of the straight tube section 11 near the proximal end, and the angle adjusting mechanism 2 is configured to adjust a bending angle of the branch tube section 12 relative to the straight tube section 11;
wherein, the angle adjusting mechanism 2 comprises a sleeve 21, a winding mechanism and two bending adjusting steel wires 24, one end of the sleeve 21 is fixed at the proximal end of the double-cavity micro catheter 1, the other end of the double-lumen micro catheter is provided with a guide wire port corresponding to the first guide wire lumen and allowing a guide wire to pass through, the winding mechanism is arranged on the sleeve 21, the two bend-adjusting steel wires 24 are respectively embedded in the adaptive channels in the side walls at the two sides of the double-lumen micro catheter 1 along the length direction of the double-lumen micro catheter 1, one end of the two bend-adjusting steel wires 24 respectively passes through the near end of the double-lumen micro catheter 1, and are wound on the winding mechanism in opposite directions, the other ends of the two are respectively connected and fixed with the two sides of the tail end of the branch pipe section 12, the winding mechanism is used for adjusting the two bend-adjusting steel wires 24 to be wound one by one and tightened the other to be released, so that the bending angle of the branch pipe section 12 is adjusted.
The procedure of this embodiment is as follows:
in an initial state, the head end (namely the branch pipe section 12) of the micro-catheter is in a linear shape, during an operation, a doctor firstly conveys the guide wire a into a blood vessel of a patient, then inserts the tail end of the guide wire a into the micro-catheter from the inlet of the guide wire a of the straight pipe section 11, and enables the guide wire a to penetrate out from the outlet of the guide wire a at the far end of the straight pipe section 11; secondly, the double-cavity micro catheter 1 is conveyed to the junction of the main trunk and the branch in the artery along the guide wire a; then the rotation angle adjusting mechanism 2 is operated, and the branch pipe section 12 is bent and enters a branch artery; finally, a guide wire b is placed along the entrance of the guide wire b of the branch pipe section 12, and the guide wire b can enter the branch artery from the exit of the guide wire b.
In the embodiment, the two steel wires 24 are used to enable the head end (i.e. the branch pipe section 12) of the double-lumen micro-catheter 1 to be bent in a clockwise (or counterclockwise) direction, and the bending angle can be adjusted at will within a range of 0-120 °.
In a preferred embodiment, the winding mechanism includes a rotating wheel 22 and a rotating shaft 23, a hole is opened on a side wall of the sleeve 21, the rotating wheel 22 is disposed in the sleeve 21, a portion of the rotating wheel passes through the hole and extends outside the sleeve 21, the rotating shaft 23 is coaxially connected with the rotating wheel 22 and rotatably connected with an inner wall of the sleeve 21, one ends of the two bending wires 24 are wound on the winding mechanism in opposite directions, an external force pulls the rotating wheel 22 to rotate, the rotating wheel 22 drives the rotating shaft 23 to rotate, and the two bending wires 24 are adjusted to be tightened and released one by the other.
In this embodiment, the structure of the winding mechanism is specifically disclosed, and when the winding mechanism is operated, the two bend-adjusting steel wires 24 can be tightened and released only by shifting the rotating wheel 22 with external force, so as to achieve the purpose of adjusting the bending angle of the branch pipe section 12 relative to the straight pipe section 11.
On the basis of the two embodiments, the developing rings 3 are arranged at the far end of the straight pipe section 11 and the periphery of the tail end of the branch pipe section 12, so that medical personnel can accurately drop the whole assembly to be conveyed to a focus according to the development of the developing rings 3 on an instrument.
The whole scheme has reasonable design and convenient operation, and can ensure that the guide wire can enter the branch artery very easily, reduce the operation difficulty and shorten the operation time.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (3)
1. An adjustable-bend double-lumen microcatheter assembly characterized in that: the double-cavity micro catheter comprises a double-cavity micro catheter (1) and an angle adjusting mechanism (2), wherein the double-cavity micro catheter (1) comprises a straight pipe section (11) and a branch pipe section (12) which is integrally formed and arranged at the far end of the straight pipe section (11) and can be bent and deformed, a first guide wire cavity and a second guide wire cavity which are mutually independent are arranged in the double-cavity micro catheter (1), two ends of the first guide wire cavity penetrate through the near end of the straight pipe section (11) and the tail end of the branch pipe section (12), two ends of the second guide wire cavity penetrate through the far end of the straight pipe section (11) and the side wall of the straight pipe section (11) to be close to the near end, and the angle adjusting mechanism (2) is used for adjusting the bending angle of the branch pipe section (12) relative to the straight pipe section (11);
the angle adjusting mechanism (2) is an outer sleeve sleeved outside the straight pipe section (11), in an initial state, the branch pipe section (12) is bent relative to the straight pipe section (11), the outer sleeve can move along the straight pipe section (11) and can move to a far end to be sleeved outside the branch pipe section (12) and force the branch pipe section (12) to bend and deform;
or the angle adjusting mechanism (2) comprises a sleeve (21), a winding mechanism and two bending adjusting steel wires (24), one end of the sleeve (21) is fixed at the end part of the near end of the double-cavity micro catheter (1), the other end of the sleeve is provided with a guide wire port corresponding to the first guide wire cavity and allowing a guide wire to pass through, the winding mechanism is arranged on the sleeve (21), the two bending adjusting steel wires (24) are respectively embedded in the channels matched with the side walls of the two sides of the double-cavity micro catheter (1) along the length direction of the double-cavity micro catheter (1), one ends of the two bending adjusting steel wires (24) penetrate out of the near end of the double-cavity micro catheter (1) respectively and are reversely wound on the winding mechanism, the other ends of the two bending steel wires are respectively connected and fixed with the two sides of the tail end of the branch pipe section (12), the winding mechanism is used for adjusting the two bending adjusting steel wires (24) to be wound, tightened and released, thereby adjusting the bending angle of the branch pipe section (12).
2. The adjustable bend dual lumen microcatheter assembly of claim 1, wherein: the developing rings (3) are arranged on the peripheries of the far end of the straight pipe section (11) and the tail end of the branch pipe section (12).
3. An adjustable bend dual lumen microcatheter assembly as claimed in claim 1 or 2, wherein: the winding mechanism comprises a rotating wheel (22) and a rotating shaft (23), a hole site is formed in the side wall of the sleeve (21), the rotating wheel (22) is arranged in the sleeve (21), part of the rotating wheel penetrates through the hole site and extends out of the sleeve (21), the rotating shaft (23) is coaxially connected with the rotating wheel (22) and is rotatably connected with the inner wall of the sleeve (21), one end of each of two bending steel wires (24) is reversely wound on the winding mechanism, the rotating wheel (22) is driven to rotate by external force, the rotating wheel (22) drives the rotating shaft (23) to rotate, and the two bending steel wires (24) are adjusted to be tightened up and released by one other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022906278.9U CN214343885U (en) | 2020-12-07 | 2020-12-07 | Bendable double-cavity micro catheter assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022906278.9U CN214343885U (en) | 2020-12-07 | 2020-12-07 | Bendable double-cavity micro catheter assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214343885U true CN214343885U (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022906278.9U Active CN214343885U (en) | 2020-12-07 | 2020-12-07 | Bendable double-cavity micro catheter assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214343885U (en) |
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2020
- 2020-12-07 CN CN202022906278.9U patent/CN214343885U/en active Active
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