Atrial septum puncture kit

Abstract

The atrial septum puncture suite comprises a sheathing canal, an expansion tube and a puncture tube, the expansion tube is provided with a far-end channel and a near-end channel, and a step surface is formed at the connecting position of the far-end channel and the near-end channel; a limiting sleeve is fixedly installed in the near-end channel, a threading channel is formed in the side wall of the expansion tube, a pressing protrusion is arranged on the step face, a metal wire is arranged in the threading channel, and an elastic block is fixed to the metal wire. A mounting block is fixed at the puncture tube, a mounting hole is formed in the circumferential surface of the mounting block, a first pressure sensor is mounted in the mounting hole, and the first pressure sensor is connected with a movable block through a spring; the end face, close to the pressing protrusion, of the installation block is provided with an installation groove, and a second pressure sensor is installed in the installation groove. The near end of the metal wire is provided with scale marks. According to the interatrial septum puncture suite, pushing of the puncture tube can be better controlled, and therefore the human body is prevented from being injured.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to an atrial septal puncture kit. Background Art

[0002] Atrial septal puncture is mainly used to treat diseases related to abnormal electrical activity in the left atrium, such as atrial fibrillation ablation. Through atrial septal puncture, the catheter is sent from the right atrium to the left atrium to facilitate the treatment of lesions in the left atrium. Atrial septal puncture is a minimally invasive surgery for the treatment of heart diseases, with small trauma and fast recovery. Atrial septal puncture generally includes components such as a sheath, a dilator, and a puncture tube. Generally, the dilator is inside the sheath, and the puncture tube is located inside the dilator. Since the puncture operation is required, the operation needs to ensure the safety of the patient to avoid the puncture tube from continuing to move too long to the left atrium after the puncture, which may cause damage to the left atrium. Some existing atrial septal puncture kits are very dependent on the doctor's experience when used, and the pushing distance of the puncture tube is too dependent on the doctor's experience. The atrial septal puncture kit itself lacks monitoring of the puncture tube moving distance, as well as timely reminders to the doctor. In addition, the existing atrial septal puncture kit is difficult to adjust in time for patients of different body shapes or doctors with different operating habits. Summary of the invention

[0003] Purpose of the invention: This application aims to overcome the defects of the prior art and provide an atrial septal puncture kit.

[0004] Technical solution: An atrial septal puncture kit comprises a sheath tube, an expansion tube and a puncture tube, wherein the expansion tube has a distal channel located at the distal end of the expansion tube and a proximal channel connected to the distal channel, the inner diameter of the distal channel is smaller than the inner diameter of the proximal channel, thereby forming a step surface at the connection position of the distal channel and the proximal channel; a limiting sleeve is fixedly installed in the proximal channel, the limiting sleeve has a cylindrical channel and a frustum-shaped channel connected to the cylindrical channel, the cylindrical channel is located at the distal end of the limiting sleeve, a threading channel is provided in the side wall of the expansion tube, the threading channel comprises a first channel, an arc-shaped second channel connected to the first channel, a third channel connected to the second channel, an arc-shaped fourth channel connected to the third channel and a fifth channel connected to the fourth channel, the step surface A pressing protrusion is provided at the puncture tube, and the pressing protrusion has a connecting hole connected to the fifth channel. A metal wire with one end capable of passing through the connecting hole is provided in the threading channel, and an elastic block is fixed to the metal wire, which is passed through by the metal wire and abuts against the side wall of the fifth channel; a circular cylindrical mounting block passed through by the puncture tube is fixed to the puncture tube, and a mounting hole is provided at the circumferential surface of the mounting block, and a first pressure sensor is installed in the mounting hole, and the first pressure sensor is connected to a movable block through a spring, and the movable block can abut against the inner side walls of the frustum-shaped channel and the cylindrical channel; the end face of the mounting block close to the pressing protrusion is provided with a mounting groove, and a second pressure sensor is installed in the mounting groove, and the second pressure sensor can be pressed by the end of the metal wire and can be pressed by the pressing protrusion.

[0005] Furthermore, the proximal end of the metal wire has a scale mark.

[0006] Thereby, the length of the distal end of the metal wire extending out of the pressing protrusion can be well adjusted.

[0007] Furthermore, the end of the pressing protrusion is hemispherical.

[0008] Furthermore, the end of the movable block is hemispherical.

[0009] Furthermore, a bending adjustment wire is provided in the sheath tube.

[0010] The sheath can thereby be bent to achieve better surgical operations.

[0011] Furthermore, the number of the threading channels and the pressing protrusions is equal and corresponds one to one; the number of the threading channels and the pressing protrusions is 2-4.

[0012] Furthermore, the elastic block is made of polymer material.

[0013] Furthermore, the number of the mounting holes is 2-4 and they are distributed in a circular shape with equal spacing; the number of the mounting grooves is 2-4 and they are distributed in a circular shape with equal spacing.

[0014] Therefore, more signals from the first pressure sensor and the second pressure sensor can be obtained, so that the pushing of the puncture tube can be monitored more comprehensively.

[0015] Furthermore, the distal end of the limiting sleeve abuts against the step surface.

[0016] Furthermore, the distal end of the expansion tube is in a frustum shape.

[0017] Beneficial effects: The atrial septum puncture kit of the present application can achieve better puncture by utilizing the cooperation of the puncture needle and the dilation tube. When the puncture tube is extended out of the dilation tube, the length of the puncture tube extending out of the dilation tube can be well monitored.

[0018] By using the second pressure sensor and the metal wire, the maximum extension length of the puncture tube can be well monitored and reminded, so that the doctor can operate better. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the atrial septal puncture kit;

[0020] Figure 2 This is a schematic diagram of the first-person perspective of the atrial septal puncture kit;

[0021] Figure 3 This is an enlarged view of area A;

[0022] Figure 4 This is a schematic diagram of the second perspective of the cross-section of the atrial septal puncture kit;

[0023] Figure 5 This is an enlarged view of area B. DETAILED DESCRIPTION

[0024] Figure numerals: 1 puncture tube; 2 expansion tube; 2.1 distal channel; 2.2 proximal channel; 2.3 threading channel; 2.3.1 first channel; 2.3.2 second channel; 2.3.3 third channel; 2.3.4 fourth channel; 2.3.5 fifth channel; 2.4 pressing protrusion; 3 metal wire; 3.1 elastic block; 4 mounting block; 4.1 first pressure sensor; 4.2 spring; 4.3 movable block; 4.4 second pressure sensor; 5 limit sleeve; 5.1 cylindrical channel; 5.2 frustum-shaped channel.

[0025] As shown in the figure, an atrial septal puncture kit includes a sheath, an expansion tube 2 and a puncture tube 1, wherein the expansion tube 2 has a distal channel 2.1 located at the distal end of the expansion tube 2 and a proximal channel 2.2 connected to the distal channel 2.1, and the inner diameter of the distal channel 2.1 is smaller than the inner diameter of the proximal channel 2.2, so that a step surface is formed at the connection position of the distal channel 2.1 and the proximal channel 2.2; a limiting sleeve 5 is fixedly installed in the proximal channel 2.2, and the limiting sleeve 5 has a cylindrical channel 5.1 and a proximal channel 5 connected to the cylindrical channel 5. .1 is connected to a frustum-shaped channel 5.2, the cylindrical channel 5.1 is located at the distal end of the limiting sleeve 5, the side wall of the expansion tube 2 has a threading channel 2.3, the threading channel 2.3 includes a first channel 2.3.1, an arc-shaped second channel 2.3.2 connected to the first channel 2.3.1, a third channel 2.3.3 connected to the second channel 2.3.2, an arc-shaped fourth channel 2.3.4 connected to the third channel 2.3.3 and a fifth channel 2. 3.5, the step surface has a pressing protrusion 2.4, the pressing protrusion 2.4 has a connecting hole connected to the fifth channel 2.3.5, the threading channel 2.3 has a metal wire 3 whose one end can pass through the connecting hole, the metal wire 3 is fixed with an elastic block 3.1 passed by the metal wire 3 and abutting against the side wall of the fifth channel 2.3.5; the puncture tube 1 is fixed with a circular cylindrical mounting block 4 passed by the puncture tube 1, the circumferential surface of the mounting block 4 has a mounting hole, and the mounting hole is installed with A first pressure sensor 4.1 is connected to a movable block 4.3 via a spring 4.2, and the movable block 4.3 can abut against the inner wall of the frustum-shaped channel 5.2 and the cylindrical channel 5.1; the end surface of the mounting block 4 close to the pressing protrusion 2.4 has a mounting groove, and a second pressure sensor 4.4 is installed in the mounting groove, and the second pressure sensor 4.4 can be pressed by the end of the metal wire 3 and can be pressed by the pressing protrusion 2.4; the proximal end of the metal wire 3 has a scale line.

[0026] The sheath has a bending adjustment wire. The number of the threading channels 2.3 and the pressing protrusions 2.4 is equal and one-to-one corresponding; the number of the threading channels 2.3 and the pressing protrusions 2.4 is 2-4. The elastic block 3.1 is made of polymer material. The number of the mounting holes is 2-4 and they are distributed in a circular shape with equal spacing; the number of the mounting grooves is 2-4 and they are distributed in a circular shape with equal spacing. The distal end of the limit sleeve 5 abuts the step surface; the distal end of the expansion tube 2 is in a frustum shape.

[0027] As shown in the figure, during the cooperation process of the expansion tube and the puncture tube of the present application, during the process of pushing the expansion tube, the end of the puncture tube does not extend out of the expansion tube. Since the mounting block is located at the position of the limiting sleeve, the mounting block is located at different positions in the frustum-shaped channel of the limiting sleeve, and the measured value of the first pressure sensor is different, so the position of the mounting block in the frustum-shaped channel can be judged according to the measured value of the first pressure sensor. And after the expansion tube reaches the specified position, as the puncture tube is pushed, when the mounting block moves to the cylindrical channel, the measured value of the first pressure sensor no longer changes, so that it is known that the mounting block has reached the position of the cylindrical channel. The puncture tube is pushed, and when the second pressure sensor touches the end of the metal wire, the operator knows that it has almost reached the limit position of pushing, but when the operator pushes hard, it can still be pushed forward, so that the metal wire moves in the threading channel until the pressing convex block presses against the second pressure sensor, and the puncture tube cannot be pushed further at this time, ensuring that the pushing length of the puncture tube is limited to avoid unnecessary stabbing. The position of the metal wire and its length beyond the connecting hole can be fine-tuned before the operation, so that it can be adjusted according to the doctor's operating habits and the patient's body shape (adjustment can be achieved by pushing or pulling the proximal end of the metal wire in conjunction with the scale). The doctor can thus know the length that the puncture tube can be pushed between the two positions where the metal wire hits the second pressure sensor and the pressing bump hits the second pressure sensor, and can make adjustments before the operation.

[0028] Although the present invention has been illustrated and described with respect to the preferred embodiments, it will be appreciated by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. An atrial septal puncture kit, characterized in that: The invention comprises a sheath tube, an expansion tube and a puncture tube, wherein the expansion tube has a distal channel located at the distal end of the expansion tube and a proximal channel connected to the distal channel, wherein the inner diameter of the distal channel is smaller than the inner diameter of the proximal channel so as to form a step surface at the connection position of the distal channel and the proximal channel; a limiting sleeve is fixedly installed in the proximal channel, wherein the limiting sleeve has a cylindrical channel and a frustum-shaped channel connected to the cylindrical channel, wherein the cylindrical channel is located at the distal end of the limiting sleeve, wherein a threading channel is provided in the side wall of the expansion tube, wherein the threading channel comprises a first channel, an arc-shaped second channel connected to the first channel, a third channel connected to the second channel, an arc-shaped fourth channel connected to the third channel and a fifth channel connected to the fourth channel, wherein a pressing protrusion is provided at the step surface, and the pressing protrusion It has a connecting hole connected to the fifth channel, and the threading channel has a metal wire at one end which can pass through the connecting hole. An elastic block is fixed to the metal wire, which is passed through by the metal wire and abuts against the side wall of the fifth channel; a circular cylindrical mounting block is fixed to the puncture tube, which is passed through by the puncture tube, and a mounting hole is provided on the circumferential surface of the mounting block. A first pressure sensor is installed in the mounting hole, and the first pressure sensor is connected to a movable block through a spring, and the movable block can abut against the inner side walls of the frustum-shaped channel and the cylindrical channel; the end face of the mounting block close to the pressing protrusion has a mounting groove, and a second pressure sensor is installed in the mounting groove, and the second pressure sensor can be pressed by the end of the metal wire and can be pressed by the pressing protrusion; the proximal end of the metal wire has a scale line.

2. The atrial septal puncture kit according to claim 1, characterized in that: A bending adjustment wire is arranged inside the sheath tube.

3. The atrial septal puncture kit according to claim 1, characterized in that: The number of the threading channels and the pressing protrusions is equal and corresponds one to one; the number of the threading channels and the pressing protrusions is 2-4.

4. The atrial septal puncture kit according to claim 1, characterized in that: The elastic block is made of polymer material.

5. The atrial septal puncture kit according to claim 1, characterized in that: The number of the mounting holes is 2-4 and they are distributed in a circular shape with equal spacing; the number of the mounting grooves is 2-4 and they are distributed in a circular shape with equal spacing.

6. The atrial septal puncture kit according to claim 1, characterized in that: The distal end of the limiting sleeve abuts against the step surface; the distal end of the expansion tube is in a frustum shape.

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