A neurophysiological catheter

Abstract

The utility model relates to experimental apparatus technical field, concretely relates to a nerve electrophysiology catheter, including the connecting pipe, the connecting pipe one end is connected with the electrode, the connecting pipe other end plugs in the quick plug -in pipe, the connecting pipe with quick plug -in pipe detachable connection, the quick plug -in pipe is movably connected with the plug connector, the quick plug -in pipe with the plug connector between being equipped with the fixed component, the fixed component passes through quick plug -in pipe with the plug connector cooperation drive to fixed connecting pipe. The utility model has simplified the replacement of electrode, makes the replacement of electrode more convenient and fast.

Description

Technical Field

[0001] This utility model relates to the field of experimental equipment technology, specifically to a neurophysiological conduit. Background Technology

[0002] Physiological mapping catheters are a type of electrophysiological electrode catheter widely used in medical practice. They are primarily used to record the electrophysiological signals of the heart and to electrically stimulate the heart, thereby achieving the purpose of mapping cardiac diseases. Clinically, the procedure involves first puncturing the femoral vein or internal jugular vein, and under X-ray fluoroscopy, inserting the catheter along the vessel lumen to different locations within the heart to perform electrophysiological examinations or mapping. Currently, with the increasing number of patients with arrhythmias (especially atrial fibrillation) and advancements in medical research, the demand for electrophysiological mapping in mice is growing daily, enabling researchers to conduct cardiology-related research and translate research findings into clinical applications.

[0003] Mice are small in size, making intravenous cardiac mapping and stimulation extremely difficult and time-consuming. Transesophageal cardiac electrophysiological mapping and stimulation in mice is a more feasible approach; however, currently only imported mouse esophageal electrophysiological mapping catheters are available on the market, and these are expensive. Because the catheters need to be inserted deep into the mouse esophagus, they are easily damaged by gastric acid and require frequent replacement, creating significant difficulties and burdens for research.

[0004] The prior art, patent CN 221690979 U, discloses an electrophysiological catheter. To facilitate electrode replacement, it employs a constriction tube installed inside a socket. The outer end of the constriction tube is divided into multiple tongues by an axial cut. A conical sleeve is fitted onto the constriction tube and threadedly connected to the socket. The electrode is installed on the connector head. The tongues of the constriction tube are used to contract or open to load and unload the connector head, thereby achieving the purpose of electrode replacement. Although this structure facilitates electrode replacement, it is still relatively cumbersome in actual operation. Utility Model Content

[0005] The purpose of this invention is to provide a neurophysiological catheter to solve the above problems, simplify electrode replacement, and make electrode replacement more convenient and faster.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] A neurophysiological catheter includes a connecting tube, one end of which is connected to an electrode, and the other end of which is inserted into a quick-access tube. The connecting tube and the quick-access tube are detachably connected. A connector is movably connected inside the quick-access tube. A fixing component is provided between the quick-access tube and the connector. The fixing component is driven by the quick-access tube and the connector to fix the connecting tube.

[0008] Preferably, the connecting pipe has an irregular groove, the lower diameter of which is larger than the upper diameter, and the lower part of the irregular groove and the upper part of the irregular groove are connected by an annular inclined surface, and the fixing component is engaged at the annular inclined surface.

[0009] Preferably, the fixing component includes an insertion tube fixedly connected to the bottom of the quick-connect tube. The side wall of the insertion tube has a through hole, and a ball is movably disposed in the through hole. The ball abuts against the annular inclined surface. The ball is located inside the through hole and does not come out of the through hole. The fixing of the ball is driven by the plug connector.

[0010] Preferably, a connecting rod is fixedly connected to the bottom of the connector, an annular groove is formed on the lower outer side of the connecting rod, the ball is movably disposed in the annular groove, a first spring is sleeved on the outer side of the connecting rod, a T-shaped groove is formed on the inner wall of the quick-connect tube, the connector and the connecting rod are slidably disposed in the T-shaped groove, and the first spring is located in the T-shaped groove.

[0011] Preferably, a second contact is embedded in the outer wall of the insertion tube, and a first contact is embedded in the inner wall of the connecting tube, with the first contact and the second contact in contact with each other.

[0012] Preferably, the upper part of the connector is provided with a transverse sliding groove, and two wedge-shaped sliders are slidably connected in the transverse sliding groove. The two wedge-shaped sliders are symmetrically arranged, and the wedge-shaped sliders are limited and slidably engaged with the transverse sliding groove. A second spring is installed between the two wedge-shaped sliders.

[0013] This utility model has the following technical effects:

[0014] When an electrode needs to be replaced, move the quick-connect tube away from the electrode along with the connecting tube. The fixing component will then detach from the fixing connecting tube. At this point, simply pull the quick-connect tube out of the connecting tube. When installing an electrode, similarly move the quick-connect tube away from the electrode, insert it into the connecting tube, and then release the quick-connect tube. The fixing component will then lock the connecting tube in place, completing the electrode replacement. This makes electrode replacement much more convenient. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the connection tube, quick-connect tube, and connector of this utility model.

[0018] Among them, 1. connecting tube; 101. first contact point; 102. irregular groove; 2. electrode; 3. quick insertion tube; 301. insertion tube; 302. second contact point; 303. annular groove; 304. through hole; 305. ball; 4. plug connector; 401. transverse slide; 402. wedge-shaped slider; 403. first spring; 404. connecting rod; 405. second spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Reference Figures 1 to 2 As shown, this embodiment provides a neurophysiological catheter, including a connecting tube 1, an electrode 2 connected to one end of the connecting tube 1, and a quick-access tube 3 inserted into the other end of the connecting tube 1. The connecting tube 1 and the quick-access tube 3 are detachably connected. A connector 4 is movably connected inside the quick-access tube 3. A fixing component is provided between the quick-access tube 3 and the connector 4. The fixing component is driven by the quick-access tube 3 and the connector 4 to fix the connecting tube 1.

[0022] When electrode 2 needs to be replaced, move the quick-release tube 3 so that it moves together with the connecting tube 1 away from electrode 2. The fixing part will disengage from the fixing connecting tube 1. At this time, the quick-release tube 3 can be directly pulled out from the connecting tube 1. When installing the electrode, move the quick-release tube 3 away from electrode 2 in the same way, insert the quick-release tube 3 into the connecting tube 1 and then release the quick-release tube 3. At this time, the fixing part will lock the connecting tube 1, and the replacement of electrode 2 can be completed. This makes the replacement of electrode 2 more convenient.

[0023] To further optimize the design, a shaped groove 102 is provided inside the connecting pipe 1. The lower diameter of the shaped groove 102 is larger than the upper diameter of the shaped groove 102. The lower part and the upper part of the shaped groove 102 are connected by an annular inclined surface, and the fixing component is fixed at the annular inclined surface.

[0024] The solution is further optimized. The fixing component includes an insertion tube 301 fixedly connected to the bottom of the quick-connect tube 3. A through hole 304 is opened on the side wall of the insertion tube 301. A ball 305 is movably installed in the through hole 304. The ball 305 abuts against the annular inclined surface. The ball 305 is located inside the through hole 304 and does not come out of the through hole 304. The fixing of the ball 305 is driven by the connector 4.

[0025] The design is further optimized. A connecting rod 404 is fixedly connected to the bottom of the connector 4. An annular groove 303 is provided on the lower outer side of the connecting rod 404. A ball 305 is movably disposed in the annular groove 303. A first spring 403 is sleeved on the outer side of the connecting rod 404. A T-shaped groove is provided on the inner wall of the quick insertion and removal tube 3. The connector 4 and the connecting rod 404 are slidably disposed in the T-shaped groove. The first spring 403 is located in the T-shaped groove.

[0026] Move the quick-connect tube 3 so that there is a relative displacement between the quick-connect tube 3 and the connector 4. At this time, the ball 305 no longer abuts against the annular inclined surface. The ball 305 can move in the cavity formed by the T-slot and the annular groove 303. In this way, the quick-connect tube 3 can be pulled out from the connecting tube 1. The same is true when installing the click 2. First, make the quick-connect tube 3 and the connector 4 move relative to each other. This will make the ball 305 move, so that the quick-connect tube 3 can be easily inserted into the connecting tube 1. The function of the first spring 403 is to reset the quick-connect tube 3. At this time, the ball 305 is pressed against the annular inclined surface by the annular groove 303 to achieve fixation.

[0027] The scheme is further optimized by embedding a second contact 302 on the outer wall of the insertion tube 301 and embedding a first contact 101 on the inner wall of the connecting tube 1, with the first contact 101 and the second contact 302 in contact.

[0028] The purpose of setting the first contact 101 and the second contact 302 is to transmit the electrical signal in the electrode adapter box to the electrode 2.

[0029] In a further optimized design, a transverse groove 401 is provided on the upper part of the connector 4. Two wedge-shaped sliders 402 are slidably connected in the transverse groove 401. The two wedge-shaped sliders 402 are symmetrically arranged and are limited to slide in cooperation with the transverse groove 401. A second spring 405 is installed between the two wedge-shaped sliders 402.

[0030] The wedge slider 402, in conjunction with the second spring 405, allows the connector 4 to be easily inserted into the interface of the electrode adapter box, and the wedge slider 402 secures the interface of the electrode adapter box.

[0031] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A neurophysiological catheter, characterized in that, It includes a connecting tube (1), one end of which is connected to an electrode (2), and the other end of which is inserted into a quick-connect tube (3). The connecting tube (1) and the quick-connect tube (3) are detachably connected. A connector (4) is movably connected inside the quick-connect tube (3). A fixing component is provided between the quick-connect tube (3) and the connector (4). The fixing component is driven by the quick-connect tube (3) and the connector (4) to fix the connecting tube (1).

2. The neurophysiological conduit according to claim 1, characterized in that, The connecting pipe (1) has an irregular groove (102) inside. The lower diameter of the irregular groove (102) is larger than the upper diameter of the irregular groove (102). The lower part of the irregular groove (102) and the upper part of the irregular groove (102) are connected by an annular inclined surface. The fixing component is engaged at the annular inclined surface.

3. The neurophysiological conduit according to claim 2, characterized in that, The fixing component includes an insertion tube (301) fixedly connected to the bottom of the quick-connect tube (3). The side wall of the insertion tube (301) has a through hole (304). A ball (305) is movably disposed in the through hole (304). The ball (305) abuts against the annular inclined surface. The ball (305) is located inside the through hole (304) and does not come out of the through hole (304). The fixing of the ball (305) is driven by the plug (4).

4. A neurophysiological catheter according to claim 3, characterized in that, The bottom of the connector (4) is fixedly connected to a connecting rod (404). An annular groove (303) is provided on the lower outer side of the connecting rod (404). The ball (305) is movably disposed in the annular groove (303). A first spring (403) is sleeved on the outer side of the connecting rod (404). A T-shaped groove is provided on the inner wall of the quick-connect tube (3). The connector (4) and the connecting rod (404) are slidably disposed in the T-shaped groove. The first spring (403) is located in the T-shaped groove.

5. A neurophysiological conduit according to claim 3, characterized in that, The outer wall of the insertion tube (301) is provided with a second contact (302), and the inner wall of the connecting tube (1) is provided with a first contact (101). The first contact (101) and the second contact (302) are in contact with each other.

6. A neurophysiological conduit according to claim 1, characterized in that, The connector (4) has a transverse groove (401) on its upper part. Two wedge-shaped sliders (402) are slidably connected in the transverse groove (401). The two wedge-shaped sliders (402) are symmetrically arranged. The wedge-shaped sliders (402) are limited and slidably engaged with the transverse groove (401). A second spring (405) is installed between the two wedge-shaped sliders (402).

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