Atrial septum puncture kit capable of accurately positioning puncture

Abstract

The atrial septum puncture suite comprises a sheathing canal, an expansion tube, a puncture tube and a driving unit, an end mounting groove is formed in the far end of the expansion tube, a pull tube containing groove is further formed in the expansion tube, the end mounting groove divides the side wall of the expansion tube into an outer-layer side wall and an inner-layer side wall, a plurality of separation grooves are formed in the outer-layer side wall, and a pull tube containing groove is formed in the inner-layer side wall. The far end of the outer-layer side wall is separated by the separation grooves, so that a plurality of supporting pieces are formed at the far end of the outer-layer side wall, memory alloy is arranged in the supporting pieces, and the supporting pieces expand in a trumpet shape when no external force exists; a surrounding protruding block surrounding the inner layer side wall is fixed to the inner layer side wall, a plurality of channel parts are arranged in the surrounding protruding block, the driving unit comprises a pull pipe, an end circular ring and a tension spring, a plurality of pull rods are connected to the end circular ring, the pull rods are connected with pull ropes, and one ends of the pull ropes are connected with the ends of the supporting pieces. The expanding tube of the atrial septum puncture suite can achieve better positioning before puncture, and therefore the accuracy of puncture operation is improved.

Description

Technical Field

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

[0002] Atrial septal puncture surgery is a minimally invasive surgery for the treatment of heart disease. A treatment pathway is established from the right atrium to the left atrium by puncturing the atrial septum. During the operation, an atrial septal puncture kit is required. The atrial septal puncture kit generally includes a sheath, a dilator, and a puncture tube. During the puncture, the dilator needs to be used to locate the puncture site. Next, the puncture tube is used to puncture the located position, and the depth of the puncture needs to be well controlled to avoid damage to the human body caused by the length of the puncture tube extending out of the dilator too long. However, when the existing dilator is used to locate the puncture site, there is sometimes a problem of unstable positioning. After the dilator is positioned, if the position of the extension tube moves when the puncture is performed using the puncture tube, the puncture effect is poor. Therefore, the stable positioning of the dilator and the limitation of the length of the puncture tube extending out of the dilator can greatly improve the effect of atrial septal puncture. Summary of the invention

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

[0004] Technical solution: An atrial septal puncture kit, comprising a sheath, an expansion tube, a puncture tube and a drive unit, wherein the distal end of the expansion tube has an end mounting groove extending along the length direction of the expansion tube, and the expansion tube also has a tube pulling receiving groove connected to the end mounting groove, the end mounting groove divides the side wall of the expansion tube into an outer side wall and an inner side wall, the outer side wall has a plurality of dividing grooves distributed at equal intervals in an annular shape, the dividing grooves extend to the distal end of the outer side wall, and the plurality of dividing grooves divide the distal end of the outer side wall so that the distal end of the outer side wall forms a plurality of support sheets, and the support sheets have a memory alloy, when there is no external force, the multiple support plates expand in a trumpet shape; a surrounding protrusion surrounding the inner side wall is fixed at the inner side wall, and the surrounding protrusion has multiple channel parts, and the channel part includes a pull rope channel and a pull rod channel connected to the pull rope channel, the driving unit includes a pull tube installed in the pull tube accommodating 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, a plurality of pull rods are connected to the end ring, the pull rods are inserted into the pull rod channel, the pull rods are connected to the pull rope passing through the pull rope channel, and one end of the pull rope is connected to the end of the support plate.

[0005] Furthermore, the atrial septal puncture kit includes a handle, and the handle has a locking mechanism for locking the relative positions of the pulling tube and the dilation tube.

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

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

[0008] In some embodiments, the fixation may be by welding.

[0009] Furthermore, the plurality of channel portions are distributed in a ring shape with equal intervals.

[0010] Furthermore, a display sheet is installed on the inner side of the supporting sheet.

[0011] Thereby, the supporting sheet can be developed, thereby making the operation more convenient for the operator.

[0012] Furthermore, the number of the supporting sheets is 4-8.

[0013] Preferably, in some embodiments, the number of the supporting sheets is 6.

[0014] Beneficial effect: The atrial septum puncture kit with precise puncture positioning of the present application can limit the position of the puncture tube. By abutting the limiting flange of the puncture tube and the limiting ring at the expansion tube, the extended length of the puncture tube is limited to avoid the puncture tube extending too long.

[0015] The atrial septum puncture kit with precise puncture positioning of the present application can achieve good positioning of the puncture position before puncturing the atrial septum, thereby making the puncture operation of the puncture tube more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a first angle schematic diagram of the atrial septal puncture kit;

[0017] Figure 2 This is an enlarged view of area A;

[0018] Figure 3 This is a second angle schematic diagram of the atrial septal puncture kit;

[0019] Figure 4 This is an enlarged view of area B;

[0020] Figure 5 This is a cross-sectional diagram of the atrial septal puncture kit;

[0021] Figure 6 This is an enlarged view of area C;

[0022] Figure 7 This is an enlarged view of area D;

[0023] Figure 8 This is an enlarged view of area E;

[0024] Fig. 9 Schematic diagram of the atrial septal puncture kit for expansion of the support plate.

[0025] Fig.10 This is an enlarged view of area F. DETAILED DESCRIPTION

[0026] Reference numerals: 1 expansion tube; 1.1 support sheet; 1.2 separation groove; 1.3 anchor point; 1.4 display sheet; 1.5 end mounting groove; 1.6 pull tube receiving groove;

[0027] 2 pull tube; 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 circular ring; 4.2 second circular ring; 4.3 circular cylindrical tube;

[0030] 5 surrounding protrusion; 5.1 pull rod channel; 5.2 pull rope channel; 5.3 limiting ring; 5.4 spring;

[0031] 6.1 Outer side wall; 6.2 Inner side wall.

[0032] As shown in the figure, a puncture kit for precise positioning of the atrial septum puncture comprises 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 direction of the expansion tube 1. The expansion tube 1 also has a tube pulling receiving groove 1.6 connected to the end mounting groove 1.5. The end mounting groove 1.5 separates the side wall of the expansion tube 1 into an outer side wall 6.1 and an inner side wall 6.2. The outer side wall 6.1 has a plurality of dividing grooves 1.2 distributed in an annular shape with equal intervals. The dividing grooves 1.2 extend to the distal end of the outer side wall 6.1. The plurality of dividing grooves 1.2 separate the distal end of the outer side wall 6.1 so that the distal end of the outer side wall 6.1 forms a plurality of supporting sheets 1.1, and the supporting sheets 1.1 have a memory alloy therein. When there is no external force, the multiple support sheets 1.1 expand in a trumpet shape; a surrounding protrusion 5 surrounding the inner side wall 6.2 is fixed at the inner side wall 6.2, and the surrounding protrusion 5 has multiple channel parts, and the channel part includes a pull rope channel 5.2 and a pull rod channel 5.1 connected to the pull rope channel 5.2. The driving unit includes a pull tube 2 installed in the pull tube accommodating 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, and a plurality of pull rods 2.1 are connected to the end ring 2.4, and the pull rod 2.1 is inserted into the pull rod channel 5.1. The pull rod 2.1 is connected to a pull rope 2.2 passing through the pull rope channel 5.2, and one end of the pull rope 2.2 is connected to the end of the support sheet 1.1.

[0033] A limiting circular ring 5.3 is fixed at the inner side wall 6.2, and a head end is installed at the end of the expansion tube 1, and the head end includes a circular cylindrical tube 4.3, a first circular ring 4.1 connected to the circular cylindrical tube 4.3, and a second circular ring 4.2 connected to the circular cylindrical tube 4.3, and a spring 5.4 is connected between the second circular ring 4.2 and the limiting circular ring 5.3; a circular limiting flange 3.1 capable of abutting the limiting circular ring 5.3 is fixed to the outer side of the puncture tube 3. A raised anchor point 1.3 is provided on the inner side of the support sheet 1.1, and one end of the pull rope 2.2 is fixedly connected to the anchor point 1.3. Multiple channel portions are distributed in a circular shape with equal spacing. A developing film 1.4 is installed on the inner side of the support sheet 1.1. The number of the support sheets 1.1 is 4-8.

[0034] As shown in the figure, during the pushing process of the expansion tube, the pull tube is pulled backward relative to the expansion tube, so that under the action of the pull tube, the support sheet is Figure 1-8 As shown in FIG. 1 , the support sheet is in a contracted state, so that the expansion tube can be easily pushed. When the position in the heart where puncture is required is reached, the pull tube can be pushed forward, so that under the action of the tension spring and the memory alloy in the support sheet, as shown in FIG. Figure 9-10As shown, the support sheet will expand, so that the support sheet can abut against the human tissue in the heart, and push the expansion tube forward, the head end of the distal end of the expansion tube will be compressed, so that the head end will also abut against the human heart tissue under the action of the spring (the spring is compressed) (under the action of the spring, the position of the head end has a certain adjustment space, which can make the support sheet and the head end abut against the position in the heart that needs to be punctured at the same time), so that under the double abutment of multiple support sheets and the head end with the human body, the distal end of the expansion tube can be well positioned at the position where the heart needs to be punctured. After positioning, the puncture tube can be used to puncture the atrial septum, and the puncture depth of the puncture tube is limited by the cooperation of the limiting ring and the limiting flange, so as to avoid unnecessary damage to the human body caused by excessive puncture depth.

[0035] 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 septum puncture kit with precise puncture positioning, characterized in that: It includes a sheath tube, an expansion tube, a puncture tube and a drive unit. The distal end of the expansion tube has an end mounting groove extending along the length direction of the expansion tube. The expansion tube also has a tube pulling accommodating groove connected to the end mounting groove. The end mounting groove divides the side wall of the expansion tube into an outer side wall and an inner side wall. The outer side wall has a plurality of dividing grooves distributed in an annular manner with equal intervals. The dividing grooves extend to the distal end of the outer side wall. The plurality of dividing grooves separate the distal end of the outer side wall so that the distal end of the outer side wall forms a plurality of supporting sheets. The supporting sheets have a memory alloy. When there is no external force, A plurality of support sheets are expanded in a trumpet shape; a surrounding protrusion surrounding the inner side wall is fixed at the inner side wall, and a plurality of channel portions are provided in the surrounding protrusion, and the channel portion includes a pull rope channel and a pull rod channel connected to the pull rope channel; the driving unit includes a pull tube installed in the pull tube accommodating 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; a plurality of 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 sheet.

2. The atrial septum puncture kit for accurate puncture positioning according to claim 1, characterized in that: A limiting ring is fixed at the inner side wall, and a head end is installed at the end of the expansion tube. The head end includes a circular cylindrical tube, a first circular ring connected to the circular cylindrical tube, and a second circular ring connected to the circular cylindrical tube, and a spring is connected between the second circular ring and the limiting ring; a circular limiting flange that can abut the limiting ring is fixed on the outer side of the puncture tube.

3. The atrial septum puncture kit for accurate puncture positioning according to claim 1, characterized in that: The inner side of the support sheet is provided with a protruding anchor point, and one end of the pull rope is fixedly connected to the anchor point.

4. The atrial septum puncture kit for accurate puncture positioning according to claim 1, characterized in that: The plurality of channel portions are distributed in a circular shape with equal intervals.

5. The atrial septum puncture kit for accurate puncture positioning according to claim 1, characterized in that: A display sheet is installed on the inner side of the supporting sheet.

6. The atrial septum puncture kit for accurate puncture positioning according to claim 1, characterized in that: The number of the supporting sheets is 4-8.

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