CN215534839U - Pericardium puncture needle with three-dimensional mapping function - Google Patents
Pericardium puncture needle with three-dimensional mapping function Download PDFInfo
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- CN215534839U CN215534839U CN202022493496.4U CN202022493496U CN215534839U CN 215534839 U CN215534839 U CN 215534839U CN 202022493496 U CN202022493496 U CN 202022493496U CN 215534839 U CN215534839 U CN 215534839U
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Abstract
The utility model relates to the technical field of medical equipment, in particular to a three-dimensional mapping pericardium puncture needle, which comprises a needle seat, a puncture needle tube and a connecting wire, wherein the needle seat is provided with a needle hole; the needle seat is connected with the tail part of the puncture needle tube; the puncture needle is a conductor, an insulating layer is arranged on the outer side of the puncture needle except the head, and scale marks are arranged on the insulating layer; the needle base is electrically connected with a connecting wire, and the connecting wire is used for connecting a three-dimensional mapping system. The three-dimensional mapping pericardium puncture needle provided by the utility model can clearly see the distance between the needle point and the epicardium from a three-dimensional angle during pericardium puncture, controls the entering depth of the needle point in real time and can prevent heart damage. The unipolar electrogram of the needle point can be recorded, and when the needle point moves from the chest wall to the cardiac muscle, the unipolar electrogram changes obviously and can be used for assisting in judging the position of the needle point. The three-dimensional mapping pericardium puncture needle provided by the utility model can be used for fusing reconstructed images such as CT, MRI and the like by using a three-dimensional mapping system, so that a three-dimensional needle point can avoid a three-dimensional coronary artery, the three-dimensional mapping pericardium puncture needle is more accurate, and no ray can be generated completely.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to a pericardium puncture needle with three-dimensional mapping.
Background
Entering the epicardial space is a cornerstone of many heart interventional operations, for example, epicardial radiofrequency ablation refers to an interventional treatment means for mapping and parallel ablation in the epicardial space through pericardial puncture, the main path is to puncture the pericardium under the percutaneous xiphoid process or at the apex of the heart to establish an operation channel, and a catheter enters the pericardial cavity through the operation channel to perform epicardial mapping and ablation. Similarly, the technique is applicable to other supraventricular arrhythmias that require epicardial ablation after any endocardial pathway rf ablation fails, such as early atrial, atrial tachycardias, flutter, and atrioventricular pathways. Other applications that are rare at present include: the plugging of the epicardium left auricle, the esophagus protection, the implantation of the epicardium pacing electrode and the like, but the future application prospect is bright. Particularly, in recent years, the rapid development of radiofrequency ablation treatment of atrial fibrillation accounts for more than half of the whole arrhythmia interventional treatment, the success rate of primary ablation is about 70-80%, and at least 10% of recurrent patients are related to epicardial lesions, so that active epicardial intervention may be needed.
The pericardium is a layer of connective tissue membrane structure tightly wrapped around the periphery of the heart, and when an extracardiac ablation operation is performed, a channel is manually formed on the pericardium tightly attached to the outer wall of the heart through a pericardium puncture needle so that an ablation device can enter between the outer wall of the heart and the pericardium through the channel to perform ablation.
The traditional pericardium puncture technology is performed under the guidance of X-ray, but because the technology is a two-dimensional technology, the positions of a needle point and the pericardium are close to each other at a certain angle, but are not close to each other at other angles, namely, the optimal tangent line position is difficult to find, real-time multi-angle observation is difficult during clinical operation, puncture failure is often caused due to incomplete needle insertion, and the myocardium is punctured due to too deep needle insertion. Moreover, because the surface of the heart has a layer of fat, the edge of the myocardium is sometimes not clear under X-rays, so that the heart is more difficult to master during beating, the serious consequence of damaging the coronary artery on the epicardial surface is more easily caused, the pericardial puncture has certain difficulty, and the radiation quantity is larger when the pericardial puncture is operated according to the traditional technology.
In addition, the needle point of the traditional puncture needle is sharp, the right ventricle wall facing the puncture path is thin, and in addition, the ventricular bounce is not rare, and the right ventricle is not penetrated by mistake, so that the design of a myocardial protection device is also expected during puncture, and the guide wire is facilitated to enter.
The three-dimensional mapping system is widely applied to radio frequency ablation treatment, can reconstruct heart and vascular structures, displays the position of a catheter, is positioned more and more accurately, does not need to rely on rays to display, can be positioned and displayed by the three-dimensional mapping system if the three-dimensional mapping pericardial puncture needle is used, and particularly when coronary artery CT and MRI images are fused to reconstruct images, not only is the operation accuracy and safety greatly improved, but also the ray quantity can be greatly reduced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a three-dimensional mapping pericardium puncture needle, aiming at the technical problems that the puncture needle cannot be accurately positioned and the myocardium is easily damaged in the prior art.
The technical scheme for solving the technical problems is as follows:
a three-dimensional mapping pericardial puncture needle comprising: a needle seat, a puncture needle tube and a connecting lead; the needle seat is connected with the tail part of the puncture needle tube; the puncture needle is a conductor, an insulating layer is arranged on the outer side of the puncture needle except the head, and scale marks are arranged on the insulating layer; the needle seat is electrically connected with the connecting wire, and the connecting wire is used for connecting a three-dimensional mapping system.
Further, the needle hub includes: a water injection part and a lead interface; a cavity for injecting physiological saline or contrast agent is arranged in the water injection part, and the cavity is communicated with the puncture needle tube; the wire interface is fixedly connected with the water injection part and electrically connected with the connecting wire.
Furthermore, the head of the puncture needle tube is arranged into a curved round angle structure.
Further, the wire interface is connected with the connecting wire in a threaded connection or a buckling connection.
Furthermore, the length of the head of the puncture needle tube is 2-3 mm.
Furthermore, the insulating layer is an insulating sleeve attached to the outer part of the puncture needle tube or an insulating coating coated on the outer part of the puncture needle tube.
The three-dimensional mapping pericardial puncture needle provided by the utility model at least has the following beneficial effects or advantages:
according to the three-dimensional mapping pericardial puncture needle provided by the utility model, the needle seat is connected with the tail part of the puncture needle tube; the puncture needle is a conductor, an insulating layer is arranged on the outer side of the puncture needle except the head, and scale marks are arranged on the insulating layer; the needle seat is electrically connected with the three-dimensional mapping system through a connecting wire. The three-dimensional mapping pericardium puncture needle provided by the utility model can clearly see the distance between the needle point and the epicardium from a three-dimensional angle during pericardium puncture, controls the entering depth of the needle point in real time and can prevent heart damage. The unipolar electrogram of the needle point can be recorded, and when the needle point moves from the chest wall to the cardiac muscle, the unipolar electrogram changes obviously and can be used for assisting in judging the position of the needle point. In addition, the pericardium puncture needle with three-dimensional mapping provided by the utility model can use a three-dimensional system to fuse imaging data such as CT, MRI and the like, so that the three-dimensional needle point effectively avoids three-dimensional reconstruction of coronary artery, and can completely realize no ray.
Drawings
Fig. 1 is a schematic structural view of a three-dimensional mapping pericardial puncture needle according to an embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-needle seat, 11-water injection part, 12-wire interface, 2-puncture needle tube, 21-tail, 22-head and 3-connecting wire.
Detailed Description
The utility model provides a three-dimensional mapping pericardium puncture needle, aiming at the technical problems that the puncture needle cannot be accurately positioned and the myocardium is easily damaged in the prior art.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the utility model provides a pericardial puncture needle with three-dimensional mapping, which is shown in fig. 1 and mainly comprises: a needle seat 1, a puncture needle tube 2 and a connecting lead 3. The needle seat 1 is used for injecting physiological saline or contrast medium, the needle seat 1 is connected with the tail part 21 of the puncture needle tube 2, and the physiological saline or contrast medium in the needle seat 1 can enter the head part 22 of the puncture needle tube 2 from the tail part 21 of the puncture needle tube 2. The puncture needle is a conductor, and can realize the transmission of electric signals. The length of the head part 22 of the puncture needle tube 2 is 2-3mm, the outer side of the puncture needle except the head part 22 is provided with an insulating layer, and the insulating layer is an insulating sleeve attached to the outer part of the puncture needle tube 2 or an insulating coating coated on the outer part of the puncture needle tube 2; because the whole section of the puncture needle and the guide wire are both conductors, the display point in a three-dimensional system is far away from the tip, the pericardial puncture needle and the guide wire need to be insulated, only the head end is left to conduct electric signals in a 2-3mm conductive way, and other conductive parts are insulated, so that accurate positioning of puncture is realized, and the head end is developed in a three-dimensional way after the guide wire exchange to ensure that the puncture successfully enters the pericardium. The insulating layer is provided with scale marks which can measure the feeding depth of the puncture needle. The needle base 1 is electrically connected with the connecting wire 3, the connecting wire 3 is used for connecting a three-dimensional mapping system, the three-dimensional mapping system is the prior art in the field, and the structure of the three-dimensional mapping system is not explained.
Specifically, referring to fig. 1, the needle holder 1 includes: a water injection part 11 and a lead interface 12; a cavity for injecting physiological saline or contrast agent is arranged in the water injection part 11, and the cavity is also an exchange channel of the insulated guide wire; the wall of the cavity is provided with a through hole made of flexible material, and the injection tool can penetrate through the through hole to inject physiological saline or contrast agent and the like into the cavity; the through hole is normally closed, so that the physiological saline or the contrast agent in the cavity can be prevented from overflowing. The cavity is communicated with the puncture needle tube 2, and the physiological saline or the contrast agent and the like in the cavity enter the puncture needle tube 2 so as to reach the corresponding human tissue. The lead interface 12 is fixedly connected with the water injection part 11; the wire interface 12 is electrically connected to the connecting wire 3, and specifically, the wire interface 12 is screwed or fastened to the connecting wire 3.
In the embodiment of the present invention, referring to fig. 1, the head 22 of the puncture needle tube 2 is configured as a curved rounded corner structure, and the rounded corner design of the head 22 of the puncture needle tube 2 does not cause damage to the heart during continuous puncture.
The working process of the three-dimensional mapping pericardial puncture needle provided by the embodiment of the utility model is as follows: referring to fig. 1, when the head 22 of the puncture needle tube 2 punctures the pericardium and contacts pericardial fluid, an electric signal sent by the heart is conducted into the connecting lead 3 through the pericardial fluid and the head 22 of the puncture needle tube 2 and is transmitted to the three-dimensional mapping system, the position of the head 22 of the puncture needle tube 2 relative to each part of the heart is displayed, and the puncture is continued under the three-dimensional mapping system until the head 22 of the puncture needle tube 2 contacts epicardium and stops the puncture. The head 22 of the puncture needle tube 2 is a special bending needle point, the round angle is arranged around the needle point, and the needle point can not damage the heart after puncturing into the pericardium due to the special bending structure.
The three-dimensional mapping pericardial puncture needle provided by the embodiment of the utility model at least has the following beneficial effects or advantages:
according to the three-dimensional mapping pericardial puncture needle provided by the embodiment of the utility model, the needle seat is connected with the tail part of the puncture needle tube; the puncture needle is a conductor, an insulating layer is arranged on the outer side of the puncture needle except the head, and scale marks are arranged on the insulating layer; the needle seat is electrically connected with the connecting lead. The three-dimensional mapping pericardium puncture needle provided by the utility model can clearly see the distance between the needle point and the epicardium from a three-dimensional angle during pericardium puncture, controls the entering depth of the needle point in real time and can prevent heart damage. The unipolar electrogram of the needle point can be recorded, and when the needle point moves from the chest wall to the cardiac muscle, the unipolar electrogram changes obviously and can be used for assisting in judging the position of the needle point. In addition, the pericardium puncture needle with three-dimensional mapping provided by the utility model can use a three-dimensional system to fuse imaging data such as CT (computed tomography) and the like, so that the needle point can effectively avoid coronary arteries, and no rays can be generated.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A three-dimensional mapping pericardial puncture needle, comprising: a needle seat (1), a puncture needle tube (2) and a connecting lead (3); the needle seat (1) is connected with the tail part (22) of the puncture needle tube (2); the puncture needle is a conductor, an insulating layer is arranged on the outer side of the puncture needle except the head (21), and scale marks are arranged on the insulating layer; the needle seat (1) is electrically connected with the connecting wire (3), and the connecting wire (3) is used for connecting a three-dimensional mapping system.
2. The three-dimensional mapping pericardial puncture needle according to claim 1, wherein the needle hub (1) includes: a water injection part (11) and a lead interface (12); a cavity for injecting physiological saline or contrast agent is arranged in the water injection part (11), and the cavity is communicated with the puncture needle tube (2); the lead interface (12) is fixedly connected with the water injection part (11), and the lead interface (12) is electrically connected with the connecting lead (3).
3. The three-dimensional mapping pericardial puncture needle according to claim 2, wherein the head (21) of the puncture needle tube (2) is provided with a curved rounded corner structure.
4. The three-dimensional mapping pericardial puncture needle according to claim 2, wherein the lead interface (12) is screwed or snapped with the connecting lead (3).
5. The three-dimensional mapping pericardial puncture needle according to any one of claims 1-4, wherein the head (21) of the puncture needle tube (2) has a length of 2-3 mm.
6. The three-dimensional mapping pericardial puncture needle according to claim 1, wherein the insulation layer is an insulation sleeve attached to the outside of the puncture needle tube (2) or an insulation coating applied to the outside of the puncture needle tube (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022493496.4U CN215534839U (en) | 2020-11-02 | 2020-11-02 | Pericardium puncture needle with three-dimensional mapping function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022493496.4U CN215534839U (en) | 2020-11-02 | 2020-11-02 | Pericardium puncture needle with three-dimensional mapping function |
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| CN215534839U true CN215534839U (en) | 2022-01-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115252078A (en) * | 2022-07-28 | 2022-11-01 | 储慧民 | Pericardium puncture needle |
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2020
- 2020-11-02 CN CN202022493496.4U patent/CN215534839U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115252078A (en) * | 2022-07-28 | 2022-11-01 | 储慧民 | Pericardium puncture needle |
| CN115252078B (en) * | 2022-07-28 | 2024-04-26 | 储慧民 | Pericardium puncture needle |
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