CN115804631A - Ultrasonic imaging catheter with interatrial septum puncture needle - Google Patents
Ultrasonic imaging catheter with interatrial septum puncture needle Download PDFInfo
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- CN115804631A CN115804631A CN202211603852.0A CN202211603852A CN115804631A CN 115804631 A CN115804631 A CN 115804631A CN 202211603852 A CN202211603852 A CN 202211603852A CN 115804631 A CN115804631 A CN 115804631A
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Abstract
The invention discloses an ultrasonic imaging catheter with an interatrial septum puncture needle, which comprises an intervention sheath tube, an adjustment sheath tube and an interatrial septum puncture needle, wherein a catheter handle is arranged at the near end of the intervention sheath tube, a plurality of bend adjusters are arranged on the catheter handle, the bend adjusters are connected to one end of a traction wire, the other end of the traction wire is connected to an anchor point on the far-end side wall of the intervention sheath tube, and the bend adjusters can pull the anchor point through the traction wire; the adjusting sheath is a rigid tube, one end of the adjusting sheath is inserted into the intervention sheath, and one end of the interatrial septum puncture needle is inserted into the adjusting sheath. By adopting the technical scheme, the ultrasonic diagnosis and the atrial septal puncture function can be simultaneously realized by one-time catheter intervention in the operation, the length of the bendable part of the catheter head end can be controlled, the space adaptability to different sizes and abnormal heart structures in the operation can be increased, the length of the bendable part is reduced, the catheter is particularly suitable for the pediatric heart cavity intervention, and the catheter adaptability is further increased.
Description
Technical Field
The invention relates to an ultrasonic imaging catheter with an interatrial septum puncture needle, belonging to the technical field of medical instruments.
Background
In recent years, medical technology has advanced in the field of cardiac intervention, and more minimally invasive procedures capable of performing interventional medical procedures in the left atrium, such as left atrial appendage occlusion, atrial fibrillation radio frequency ablation, mitral valve balloon dilation and the like, are available. From the cardiac structure, there are two possible routes for minimally invasive interventional catheters to access the left atrium: the first is to penetrate the interatrial septum through the right atrium and the second is to enter the left atrium through the left ventricle. If the catheter enters through the left ventricle, the catheter needs to puncture the femoral artery and then reversely pass through the aortic valve and the mitral valve to enter the left atrium, so that the catheter needs to realize at least two large-angle bends, and the maneuverability is poor. Therefore, it is currently a widely used method to puncture the femoral vein and proceed to the right atrium, then puncture the interatrial septum into the left atrium. The interatrial septum is located between the left atrium and the right atrium, the thinnest position of the interatrial septum is the fossa ovalis, the thickness of the central part of the fossa ovalis is only about 1mm, and the interatrial septum puncture position is an ideal position. However, the position of the fossa ovalis in the heart has great individual difference, the left side of the interatrial septum is close to the pulmonary vein ostium and the left endocardium, and the difficulty of interatrial septum puncture is not low due to the characteristics of small left atrial space, thin roof and left atrial appendage and the like. If the puncture is improper, complications such as myocardial perforation, aortic hemorrhage and the like are easy to cause, and the consequences are serious.
In traditional surgery, interatrial septum puncture is mainly assisted by X-rays: the shape and the position of the puncture system are displayed through X-rays, and meanwhile, the puncture guide head end is gradually moved on the interatrial septum, and as the oval fossa is in a concave fossa structure, when the guide head end moves to the oval fossa, an operator can feel slight force feedback so as to determine that the guide head end touches the oval fossa; after the position of the fossa ovalis determined, X-ray development is used, so that an operator can conveniently adjust the guide head end to be vertical to the interatrial septum surface and observe the position of the needle head when puncture is performed, and the puncture needle is prevented from being inclined or overlong to hurt other parts of the heart; after the puncture is completed, the operator withdraws the needle, still by X-ray visualization, and a device such as an ablation catheter is delivered to the left atrium through the puncture hole. Therefore, the atrial septal puncture has higher requirements on puncture hand feeling and puncture precision of an operator, and the operator can master the puncture hand feeling and the puncture precision through long-term learning and experience accumulation. Meanwhile, the use of X-rays causes radioactive hazards to both operators and patients, which is very harmful to the health of the personnel.
In order to reduce the dependence on X-rays during atrial septal puncture as much as possible and reduce the harm of the X-rays to doctors and patients, the ultrasonic catheter in the heart cavity is increasingly applied to clinic as a technology for replacing the X-rays in the aspect of forming images of heart structures. The ultrasonic catheter in the heart cavity uses ultrasonic imaging, has no ionizing radiation harm to human bodies, can go deep into the heart cavity through the catheter, enables an operator to visually see the structure in the heart in real time, and can determine the position of the interventional catheter more accurately. However, the intracardiac ultrasound catheter and the interatrial septum puncture catheter are independent of each other: in the scene that needs let the intracardiac ultrasonic catheter get into the left atrium, the art person will withdraw from the puncture catheter earlier, then adjust intracardiac ultrasonic catheter position and crookedness and look for the interatrial septum puncture, only can get into the left atrium with intracardiac ultrasonic catheter alignment puncture. The operation difficulty of advancing and retreating the catheter is high, the ultrasonic catheter in the heart cavity can be successfully aligned with the puncture hole only by multiple attempts, and the operation time is long.
Disclosure of Invention
Therefore, the invention aims to provide a catheter which has a puncture function while imaging, the bending position of the catheter can be adjusted, the telescopic length of a puncture needle can be controlled, and the side wall of the catheter can be prevented from being punctured by the needle head of the puncture needle when the catheter is bent.
In order to achieve the purpose, the ultrasonic imaging catheter with the interatrial septum puncture needle comprises an intervention sheath, an adjustment sheath and the interatrial septum puncture needle, wherein a catheter grip is arranged at the near end of the intervention sheath, a plurality of bending regulators are arranged on the catheter grip, the bending regulators are connected to one end of a traction wire, the other end of the traction wire is connected to an anchor point on the far-end side wall of the intervention sheath, and the bending regulators can pull the anchor point through the traction wire; the adjusting sheath tube is a rigid tube, one end of the adjusting sheath tube is inserted into the intervention sheath tube, an adjusting sheath tube handle is arranged on the adjusting sheath tube and positioned outside the intervention sheath tube, and the adjusting sheath tube can be controlled to move in the intervention sheath tube by moving the adjusting sheath tube handle; one end of the interatrial septum puncture needle is inserted into the adjusting sheath, a puncture needle handle is arranged on the interatrial septum puncture needle and positioned at the position outside the adjusting sheath, and the interatrial septum puncture needle can be controlled to move in the adjusting sheath by moving the puncture needle handle.
The anchor point is a plurality of, and is a plurality of evenly distributed is gone up in the circumference of intervening the sheath pipe to the anchor point.
The bending regulator comprises a sliding block, a sliding groove matched with the sliding block is formed in the catheter handle, and the sliding block can move along the sliding groove.
The bending regulator comprises a sleeve, the near end of the intervention sheath tube is fixed with the sleeve, and the sliding groove is formed in the side wall of the sleeve; the sliding block penetrates through the sliding groove so as to be partially positioned on the inner side of the sleeve and partially positioned on the outer side of the sleeve; the traction wire is connected to the part of the sliding block, which is positioned on the inner side of the sleeve.
The runner grips the slide so as to provide a damping force to the slide when the slide has a tendency to move in the runner.
An ultrasonic transducer is arranged at the end part of the far end of the interventional sheath, and the ultrasonic transducer is eccentrically arranged in the interventional sheath.
The ultrasonic imaging catheter with the interatrial septum puncture needle further comprises a puncture needle limiting device, and the puncture needle limiting device is used for limiting the needle tip part of the interatrial septum puncture needle to be on the inner side of the adjusting sheath tube.
The puncture needle limiting device comprises a limiting ejector rod arranged on the handle of the adjusting sheath tube, and the limiting ejector rod is arranged in parallel with the interatrial puncture needle and can be ejected against the handle of the puncture needle; when the limiting ejector rod is abutted against the puncture needle handle, the needle tip part of the interatrial puncture needle retracts to the inner side of the adjusting sheath tube; the puncture needle handle is provided with a through hole, and after the puncture needle handle is rotated to enable the limiting ejector rod to be aligned to the through hole, the limiting ejector rod can penetrate through the through hole.
By adopting the technical scheme, in the ultrasonic imaging catheter with the interatrial septum puncture needle, the needle tip part of the puncture needle is hidden inside the bent sheath tube during interventional diagnosis, and the traction wire connected to the distal end of the sheath tube is driven by the bending regulator on the handle grip to control the bending of the interventional sheath tube; the length of the bendable part of the interventional sheath can be further controlled by adjusting the sheath handle; if atrial septal puncture is needed in the operation, only the puncture needle handle is needed to be pushed to the farthest end, so that the head end of the puncture needle extends out of the head end of the sheath tube. According to the ultrasonic imaging catheter with the interatrial puncture needle, the retraction and the extension of the puncture needle are controlled by the puncture needle handle, so that the ultrasonic diagnosis and the interatrial puncture function can be realized simultaneously through one-time catheter intervention, the situation that the ultrasonic catheter is difficult to pass through the interatrial after the interatrial puncture is greatly reduced, the pushing of multiple catheters is reduced, the operation time is reduced, the dependence on ray development guidance during the interatrial puncture is reduced, and the dose of rays absorbed by doctors and patients is further reduced; meanwhile, the length of the bending part at the head end of the catheter can be further controlled by adjusting the depth control of the sheath tube handle, the space adaptability of the operation to different sizes and abnormal heart structures can be improved, the length of the bending part is reduced, the catheter is particularly suitable for the intervention of heart cavities of children, and the adaptability of the catheter is further improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A in fig. 1.
Fig. 3 is a schematic view showing a state in which the transseptal needle is pierced out of the distal end of the intervention sheath.
Fig. 4 is a schematic view showing a state where the bending length of the intervention sheath is small.
Fig. 5 is a schematic view showing a state where the bending length of the intervention sheath is large.
Fig. 6 is a schematic perspective view of the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and the detailed description.
As shown in fig. 1-3, the ultrasound imaging catheter with interatrial puncture needle according to the present invention includes an intervention sheath 1, an adjustment sheath 2 and an interatrial puncture needle 3, wherein a catheter handle 4 is disposed at a proximal end of the intervention sheath 1, a plurality of bending regulators are disposed on the catheter handle 4, the bending regulators are connected to one end of a traction wire 6, the other end of the traction wire 6 is connected to an anchor point on a distal end side wall of the intervention sheath 1, and the bending regulators can pull the anchor point through the traction wire 6; the adjusting sheath tube 2 is a rigid tube, one end of the adjusting sheath tube 2 is inserted into the intervention sheath tube 1, an adjusting sheath tube handle 7 is arranged on the adjusting sheath tube 2 and positioned outside the intervention sheath tube 1, and the adjusting sheath tube 2 can be controlled to move in the intervention sheath tube 1 by moving the adjusting sheath tube handle 7; one end of interatrial septum puncture needle 3 is inserted to adjusting in sheath pipe 2, is provided with pjncture needle handle 8 on interatrial septum puncture needle 3 and on being located the outside position of adjusting sheath pipe 2, can control interatrial septum puncture needle 3 through removing pjncture needle handle 8 and remove in adjusting sheath pipe 2.
Through transfer curved ware pulling pull wire 6, because pull wire 6 is fixed mutually with the anchor point of interveneeing on the inside lateral wall of sheath 1 distal end, to intervene sheath 1 formation tension force when pulling pull wire 6, intervene sheath 1 and crooked to this anchor point one side because of the atress inequality. In this embodiment, the number of the anchor points is four, and the four anchor points are uniformly distributed in the circumferential direction of the intervention sheath 1; correspondingly, the number of the traction wires 6 and the number of the bending regulators are also four respectively, and the traction wires and the bending regulators are used for controlling the interventional sheath 1 to bend in four directions respectively. The bending regulator comprises a sliding block 5, a sliding groove 411 matched with the sliding block 5 is arranged on the catheter handle 4, and the sliding block 5 can move along the sliding groove 411. The bending regulator comprises a sleeve 41, the proximal end of the intervention sheath tube 1 is fixed with the sleeve 41, and the sliding groove 411 is formed in the side wall of the sleeve 41; the slider 5 passes through the sliding slot 411 so as to be partially positioned inside the sleeve 41 and partially positioned outside the sleeve 41; the traction wire 6 is connected to the part of the slider 5 inside the sleeve 41. The sliding groove 411 clamps the sliding block 5, so that when the sliding block 5 has a tendency of moving in the sliding groove 411, a damping force can be provided for the sliding block 5, and the situation that the interventional sheath 1 changes the bending radian because the sliding block 5 moves under the traction of the traction wire 6 when no other external force acts is avoided; when the sliding block 5 needs to be moved, the sliding block 5 is pushed to overcome the damping force of the sliding slot 411.
The length of the bendable portion of the intervention sheath 1 can be adjusted by adjusting the position of the adjustment sheath 2 in the intervention sheath 1. Because it is hard pipe to adjust sheath pipe 2, intervene the cladding of sheath pipe 1 and adjust the part of sheath pipe 2 because receive its support, consequently can not be pulled by pull wire 6 and crooked, only do not have the cladding to adjust the part of sheath pipe 2 and just can be crooked, consequently when the bendable position length of need adjustment intervention sheath pipe 1, only need adjust the position of sheath pipe 2 in interveneeing sheath pipe 1 to the adjustment intervene sheath pipe 1 do not have the cladding to adjust sheath pipe 2 partial length can, as shown in fig. 4, 5.
The end part of the far end of the intervention sheath tube 1 is provided with an ultrasonic transducer 9, and the ultrasonic transducer 9 is eccentrically arranged in the intervention sheath tube 1, so that the obstruction caused when the atrial septal puncture needle 3 is outwards penetrated out can be avoided. When the ultrasonic transducer 9 is plural, the plural ultrasonic transducers 9 may be distributed in a ring shape.
Furthermore, the ultrasonic imaging catheter with the interatrial septum puncture needle further comprises a puncture needle limiting device, and the puncture needle limiting device is used for limiting the needle tip part of the interatrial septum puncture needle at the inner side of the adjusting sheath tube. In the present embodiment, as shown in fig. 6, the puncture needle limiting device comprises a limiting mandril 10 arranged on the adjusting sheath handle 7, the limiting mandril 10 is parallel to the interatrial septum puncture needle 3 and can be propped against the puncture needle handle 8; when the limit mandril 10 is propped against the puncture needle handle 8, the needle tip part of the atrial septal puncture needle 3 retracts to the inner side of the adjusting sheath tube 2. The puncture needle handle 8 is provided with a through hole 81, and after the puncture needle handle 8 is rotated to enable the limiting mandril 10 to be aligned to the through hole 81, the limiting mandril 10 can pass through the through hole 81. Can inject the position of interatrial septum pjncture needle 3 through spacing ejector pin 10, make the needle point portion be located and adjust the sheath pipe 2 inboard to avoid the needle point portion to pierce through and intervene the sheath pipe 1 lateral wall when intervene the bending of sheath pipe 1.
By adopting the technical scheme, in the ultrasonic imaging catheter with the interatrial puncture needle 3, during interventional diagnosis, the needle tip part of the puncture needle is hidden inside the bent sheath, and the traction wire 6 connected to the distal end of the sheath is driven by the bending regulator on the handle grip to control the bending of the interventional sheath 1; the length of the bendable part of the interventional sheath 1 can be further controlled by adjusting the sheath handle 7; if the atrial septal puncture is needed in the operation, the puncture needle handle 8 is pushed to the farthest end, so that the head end of the puncture needle extends out of the head end of the sheath tube. According to the ultrasonic imaging catheter with the interatrial puncture needle 3, the retraction and the extension of the puncture needle are controlled by the puncture needle handle 8, so that the ultrasonic diagnosis and the interatrial puncture function can be simultaneously realized through one-time catheter intervention, the situation that the ultrasonic catheter is difficult to pass through the interatrial after the interatrial puncture is greatly reduced, the pushing of multiple catheters is reduced, the operation time is reduced, the dependence on ray development guidance during the interatrial puncture is reduced, and the dose of ray absorption by doctors and patients is further reduced; meanwhile, the bending position length of the catheter head end can be further controlled by adjusting the depth control of the sheath catheter handle 7, the space adaptability of the operation to different sizes and abnormal heart structures can be improved, the length of the bending part is reduced, the catheter is particularly suitable for the heart cavity intervention of children, and the catheter adaptability is further improved.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (8)
1. An ultrasonic imaging catheter with an interatrial septum puncture needle, comprising: the catheter comprises an intervention sheath tube, an adjustment sheath tube and an interatrial septum puncture needle, wherein a catheter handle is arranged at the near end of the intervention sheath tube, a plurality of bending adjusting devices are arranged on the catheter handle, the bending adjusting devices are connected to one end of a traction wire, the other end of the traction wire is connected to an anchor point on the far-end side wall of the intervention sheath tube, and the bending adjusting devices can pull the anchor point through the traction wire; the adjusting sheath tube is a rigid tube, one end of the adjusting sheath tube is inserted into the intervention sheath tube, an adjusting sheath tube handle is arranged on the adjusting sheath tube and positioned outside the intervention sheath tube, and the adjusting sheath tube can be controlled to move in the intervention sheath tube by moving the adjusting sheath tube handle; one end of the interatrial septum puncture needle is inserted into the adjusting sheath, a puncture needle handle is arranged on the interatrial septum puncture needle and positioned at the position outside the adjusting sheath, and the interatrial septum puncture needle can be controlled to move in the adjusting sheath by moving the puncture needle handle.
2. The ultrasound imaging catheter with transseptal needle as set forth in claim 1, wherein: the anchor point is a plurality of, and is a plurality of evenly distributed is gone up in the circumference of intervening the sheath pipe to the anchor point.
3. The ultrasound imaging catheter with transseptal needle as set forth in claim 1, wherein: the bending regulator comprises a sliding block, a sliding groove matched with the sliding block is arranged on the catheter handle, and the sliding block can move along the sliding groove.
4. The ultrasound imaging catheter with transseptal needle of claim 3 wherein: the bending regulator comprises a sleeve, the near end of the intervention sheath tube is fixed with the sleeve, and the sliding chute is arranged on the side wall of the sleeve; the sliding block penetrates through the sliding groove so as to be partially positioned on the inner side of the sleeve and partially positioned on the outer side of the sleeve; the traction wire is connected to the portion of the slider located inside the sleeve.
5. The ultrasound imaging catheter with transseptal needle of claim 4 wherein: the runner grips the slider so that a damping force can be provided to the slider when the slider has a tendency to move in the runner.
6. The ultrasound imaging catheter with transseptal needle of any of claims 1-5, wherein: an ultrasonic transducer is arranged at the end part of the far end of the interventional sheath, and the ultrasonic transducer is eccentrically arranged in the interventional sheath.
7. The ultrasound imaging catheter with transseptal needle of any of claims 1-5, wherein: the ultrasonic imaging catheter with the interatrial septum puncture needle further comprises a puncture needle limiting device, and the puncture needle limiting device is used for limiting the needle tip part of the interatrial septum puncture needle to the inner side of the adjusting sheath tube.
8. The ultrasound imaging catheter with transseptal needle as set forth in claim 7, wherein: the puncture needle limiting device comprises a limiting ejector rod arranged on the handle of the adjusting sheath tube, and the limiting ejector rod is arranged in parallel with the interatrial puncture needle and can be ejected against the handle of the puncture needle; when the limit mandril is propped against the puncture needle handle,
the needle tip part of the atrial septal puncture needle retracts to the inner side of the adjusting sheath; a through hole is arranged on the puncture needle handle,
when the puncture needle handle is rotated to enable the limiting ejector rod to be aligned to the through hole, the limiting ejector rod can penetrate through the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211603852.0A CN115804631A (en) | 2022-12-13 | 2022-12-13 | Ultrasonic imaging catheter with interatrial septum puncture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211603852.0A CN115804631A (en) | 2022-12-13 | 2022-12-13 | Ultrasonic imaging catheter with interatrial septum puncture needle |
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| Publication Number | Publication Date |
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| CN115804631A true CN115804631A (en) | 2023-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211603852.0A Pending CN115804631A (en) | 2022-12-13 | 2022-12-13 | Ultrasonic imaging catheter with interatrial septum puncture needle |
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| CN (1) | CN115804631A (en) |
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- 2022-12-13 CN CN202211603852.0A patent/CN115804631A/en active Pending
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