A room-wide puncture kit for precise puncture positioning

Abstract

This application discloses a chamber septum puncture kit for precise puncture positioning, including a sheath, an expansion tube, a puncture tube, and a drive unit. The distal end of the expansion tube has an end mounting groove, and the expansion tube also has a pull tube receiving groove. The end mounting groove divides the sidewall of the expansion tube into an outer sidewall and an inner sidewall. The outer sidewall has multiple dividing grooves, which separate the distal end of the outer sidewall, thus forming multiple support plates at the distal end of the outer sidewall. The support plates contain a shape memory alloy, and when there is no external force, the multiple support plates expand in a trumpet shape. A surrounding protrusion is fixed to the inner sidewall, and the surrounding protrusion has multiple channels. The drive unit includes a pull tube, an end ring, and a tension spring. Multiple pull rods are connected to the end ring, and the pull rods are connected to pull ropes. One end of the pull rope is connected to the end of the support plate. The expansion tube of the chamber septum puncture kit of this application can achieve better positioning before puncture, thereby improving the accuracy of the puncture operation.

Description

Technical Field

[0001] This application relates to the field of medical devices, specifically to a septal puncture kit for precise puncture positioning. Background Technology

[0002] Atrial septal puncture is a minimally invasive surgical procedure used to treat heart disease. It establishes a treatment pathway from the right atrium to the left atrium by puncturing the atrial septum. The procedure requires an atrial septal puncture kit, which typically includes a sheath, a dilator, and a puncture catheter. During the puncture, the dilator is used to locate the puncture site. The puncture is then performed using the puncture catheter, and the depth of the puncture needs to be carefully controlled to avoid injury caused by the catheter extending too far beyond the dilator. However, existing dilators sometimes exhibit unstable positioning. If the dilator shifts after positioning, the puncture will be less effective. Therefore, achieving stable positioning of the dilator and limiting the length of the puncture catheter extending beyond the dilator can significantly improve the outcome of atrial septal puncture. Summary of the Invention

[0003] Purpose of the invention: This application aims to overcome the deficiencies of the prior art and provide a room septum puncture kit for precise puncture positioning.

[0004] Technical Solution: A transseptal puncture kit includes a sheath, a dilator, a puncture tube, and a drive unit. The distal end of the dilator has an end mounting groove extending along its length. The dilator also has a tube-receiving groove communicating with the end mounting groove. The end mounting groove divides the sidewall of the dilator into an outer sidewall and an inner sidewall. The outer sidewall has multiple equally spaced, annularly distributed dividing grooves extending to the distal end of the outer sidewall. These multiple dividing grooves separate the distal end of the outer sidewall, forming multiple support pieces at the distal end of the outer sidewall. Each support piece has a memory function. The alloy expands in a trumpet shape when there is no external force. A surrounding protrusion is fixed to the inner sidewall, and the surrounding protrusion has multiple channels. The channels include a pull rope channel and a pull rod channel communicating with the pull rope channel. The drive unit includes a pull tube installed in the pull tube receiving groove, an end ring connected to the end of the pull tube and located in the end mounting groove, and a tension spring connecting the end ring and the surrounding protrusion. Multiple pull rods are connected to the end ring, and the pull rods are inserted into the pull rod channels. The pull rods are connected to pull ropes that pass through the pull rope channels, and one end of the pull rope is connected to the end of the support piece.

[0005] Furthermore, the transseptal puncture kit includes a handle having a locking mechanism that locks the relative positions of the pull tube and the dilation tube.

[0006] Furthermore, a limiting ring is fixed at the inner sidewall, and a head end is installed at the end of the expansion tube. The head end includes a cylindrical tube, a first ring connected to the cylindrical tube, and a second ring connected to the cylindrical tube. A spring is connected between the second ring and the limiting ring. An annular limiting flange that can abut against the limiting ring is fixed on the outer side of the puncture tube.

[0007] Furthermore, the inner side of the support plate has a raised anchor point, and one end of the pull rope is fixedly connected to the anchor point.

[0008] In some embodiments, it can be fixed by welding.

[0009] Furthermore, the multiple channels are distributed in a ring with equal spacing.

[0010] Furthermore, a display film is mounted on the inner side of the support plate.

[0011] This allows the support film to develop, making it easier for the operator to work with.

[0012] Furthermore, the number of support pieces is 4-8.

[0013] Preferably, in some embodiments, the number of support sheets is six.

[0014] Beneficial effects: The interseptal puncture kit for precise puncture positioning of this application can limit the puncture tube. By abutting the limiting flange of the puncture tube and the limiting ring at the dilation tube, the extension length of the puncture tube is limited, thus preventing the puncture tube from extending too far.

[0015] The interatrial septum puncture kit of this application enables precise positioning of the puncture site before puncturing the interatrial septum, thereby making the puncture operation of the puncture tube more stable. Attached Figure Description

[0016] Figure 1 A schematic diagram of the first angle of the transseptal puncture kit;

[0017] Figure 2 This is a magnified view of region A;

[0018] Figure 3 A schematic diagram of the second angle of the transseptal puncture kit;

[0019] Figure 4 This is a magnified view of region B.

[0020] Figure 5 A cross-sectional schematic diagram of the transseptal puncture kit;

[0021] Figure 6 This is a magnified view of region C;

[0022] Figure 7 This is a magnified view of region D;

[0023] Figure 8 This is a magnified view of region E.

[0024] Figure 9 A schematic diagram of the interatrial septal puncture kit, showing the expansion of the support sheet.

[0025] Figure 10 This is a magnified view of region F. Detailed Implementation

[0026] Reference numerals: 1 Expansion tube; 1.1 Support plate; 1.2 Dividing groove; 1.3 Anchor point; 1.4 Display plate; 1.5 End mounting groove; 1.6 Pull tube receiving groove;

[0027] 2. Pull pipe; 2.1 Pull rod; 2.2 Pull rope; 2.3 Pull ring; 2.4 End ring;

[0028] 3. Puncture tube; 3.1 Limiting flange;

[0029] 4.1 First ring; 4.2 Second ring; 4.3 Ring-shaped cylindrical tube;

[0030] 5. Surrounding protrusions; 5.1 Pull rod channel; 5.2 Pull rope channel; 5.3 Limiting ring; 5.4 Spring;

[0031] 6.1 Outer sidewall; 6.2 Inner sidewall.

[0032] As shown in the figure, a precise puncture positioning interventricular puncture kit includes a sheath, an expansion tube 1, a puncture tube 3, and a drive unit. The distal end of the expansion tube 1 has an end mounting groove 1.5 extending along the length of the expansion tube 1. The expansion tube 1 also has a tube-receiving groove 1.6 communicating with the end mounting groove 1.5. The end mounting groove 1.5 divides the sidewall of the expansion tube 1 into an outer sidewall 6.1 and an inner sidewall 6.2. The outer sidewall 6.1 has multiple equally spaced annular dividing grooves 1.2 extending to the distal end of the outer sidewall 6.1. The multiple dividing grooves 1.2 divide the distal end of the outer sidewall 6.1, thereby forming multiple support pieces 1.1 at the distal end of the outer sidewall 6.1. The support pieces 1.1 contain a shape memory alloy. When there is no external force, the multiple support plates 1.1 expand in a trumpet shape; a surrounding protrusion 5 is fixed at the inner sidewall 6.2, which surrounds the inner sidewall 6.2. The surrounding protrusion 5 has multiple channels, including a pull rope channel 5.2 and a pull rod channel 5.1 communicating with the pull rope channel 5.2. The drive unit includes a pull tube 2 installed in the pull tube receiving groove, an end ring 2.4 connected to the end of the pull tube 2 and located in the end mounting groove 1.5, and a tension spring 2.3 connecting the end ring 2.4 and the surrounding protrusion 5. Multiple pull rods 2.1 are connected to the end ring 2.4. The pull rods 2.1 are inserted into the pull rod channel 5.1. The pull rods 2.1 are connected to a pull rope 2.2 that passes through the pull rope channel 5.2. One end of the pull rope 2.2 is connected to the end of the support plate 1.1.

[0033] A limiting ring 5.3 is fixed at the inner sidewall 6.2. A head end is installed at the end of the expansion tube 1. The head end includes a circular cylindrical tube 4.3, a first ring 4.1 connected to the circular cylindrical tube 4.3, and a second ring 4.2 connected to the circular cylindrical tube 4.3. A spring 5.4 connects the second ring 4.2 and the limiting ring 5.3. A circular limiting flange 3.1 capable of abutting against the limiting ring 5.3 is fixed to the outer side of the puncture tube 3. The inner side of the support piece 1.1 has a protruding anchor point 1.3, and one end of the pull rope 2.2 is fixedly connected to the anchor point 1.3. Multiple channels are distributed in a ring at equal intervals. A display film 1.4 is installed on the inner side of the support piece 1.1. The number of support pieces 1.1 is 4-8.

[0034] As shown in the figure, the room partition puncture kit of this application, during the pushing process of the expansion tube, causes the pull tube to be pulled backward relative to the expansion tube, thereby causing the support plate to move as... Figure 1-8 As shown, the support plate is in a contracted state, allowing the dilator can be easily pushed forward. Upon reaching the required puncture site within the heart, the cannula can be pushed forward, and under the action of the tension spring and the shape memory alloy within the support plate, it will... Figure 9-10As shown, the support plate expands, allowing it to contact the heart tissue and push the dilator tube forward. The distal end of the dilator tube is compressed, and under the action of a spring (the spring is compressed), the distal end also contacts the heart tissue. (The position of the distal end has some adjustment space under the action of the spring, allowing both the support plate and the distal end to simultaneously contact the area requiring puncture within the heart.) This dual contact between the support plate and the distal end with the body ensures precise positioning of the distal end of the dilator tube at the desired puncture site. After positioning, the puncture tube can be used to puncture the atrial septum. The puncture depth is limited by the cooperation of the limiting ring and limiting flange, thus preventing excessive puncture depth and unnecessary damage to the body.

[0035] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes and modifications can be made to the present invention without departing from the scope defined by the claims.

Claims

1. A room partition puncture kit for precise puncture positioning, characterized in that, The device includes a sheath, an expansion tube, a puncture tube, and a drive unit. The distal end of the expansion tube has an end mounting groove extending along its length. The expansion tube also has a tube-receiving groove communicating with the end mounting groove. The end mounting groove divides the sidewall of the expansion tube into an outer sidewall and an inner sidewall. The outer sidewall has multiple annularly spaced dividing grooves extending to its distal end. These grooves divide the distal end of the outer sidewall, forming multiple support plates. Each support plate contains a shape memory alloy; under no external force... Multiple support plates expand in a trumpet shape; a surrounding protrusion is fixed to the inner sidewall, the surrounding protrusion has multiple channels, the channels include a pull rope channel and a pull rod channel communicating with the pull rope channel, the drive unit includes a pull tube installed in the pull tube receiving groove, an end ring connected to the end of the pull tube and located in the end mounting groove, and a tension spring connecting the end ring and the surrounding protrusion, multiple pull rods are connected to the end ring, the pull rods are inserted into the pull rod channel, the pull rods are connected to a pull rope passing through the pull rope channel, and one end of the pull rope is connected to the end of the support plate; A limiting ring is fixed at the inner sidewall, and a head end is installed at the end of the expansion tube. The head end includes a cylindrical tube, a first ring connected to the cylindrical tube, and a second ring connected to the cylindrical tube. A spring is connected between the second ring and the limiting ring. An annular limiting flange that can abut against the limiting ring is fixed on the outer side of the puncture tube.

2. The interseptal puncture kit for precise puncture positioning according to claim 1, characterized in that, The inner side of the support plate has a raised anchor point, and one end of the pull rope is fixedly connected to the anchor point.

3. The interseptal puncture kit for precise puncture positioning according to claim 1, characterized in that, Multiple channels are distributed in a ring with equal spacing.

4. The interseptal puncture kit for precise puncture positioning according to claim 1, characterized in that, A display film is installed on the inner side of the support plate.

5. The interseptal puncture kit for precise puncture positioning according to claim 1, characterized in that, The number of support plates is 4-8.

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