Coronary artery primary-secondary catheter

Abstract

The utility model provides a coronary artery child-mother catheter which comprises a mother tube, a child tube and a driving mechanism, the child tube is located in the mother tube, the driving mechanism comprises a handheld part, the mother tube is connected with the handheld part, a driving assembly and a linkage assembly are arranged in the handheld part, and the driving assembly is connected with the linkage assembly. The driving assembly comprises a sliding column slidably connected to the top of the handheld part, the top end of the sliding column penetrates to the outer side of the handheld part to be fixedly connected with a pressing block, the bottom end of the sliding column penetrates to the interior of the handheld part to be fixedly connected with a sliding plate, and the sliding plate is slidably connected with the interior of the handheld part. Compared with the prior art, the auxiliary pipe has the advantages that the auxiliary pipe can stretch out and draw back through the design of the driving mechanism, the stretching out and drawing back stability and accuracy of the auxiliary pipe at the opening of the main pipe are improved, the auxiliary pipe is driven to stretch out and draw back through the steel wire, the auxiliary pipe has certain impact strength, and resistance at the narrow coronary artery position can be overcome more easily.

Description

Technical Field

[0001] The utility model relates to a coronary artery mother-daughter catheter, belonging to the field of medical supplies. Background Art

[0002] Coronary atherosclerotic heart disease is a heart disease caused by atherosclerotic lesions in the coronary arteries, which leads to stenosis or blockage of the blood vessel lumen, resulting in myocardial ischemia, hypoxia or necrosis. It is often called "coronary heart disease". At present, the method of treating coronary heart disease is to use a special coronary artery catheter to send it to the coronary stenosis through the femoral artery or radial artery, expand the stenotic lumen by inflating the balloon, improve blood flow, and place a stent in the expanded stenosis to prevent restenosis.

[0003] However, due to the tortuosity, calcification, and coexistence of tortuosity and calcification at the coronary artery stenosis, when encountering complex situations or severe conditions, the existing coronary artery catheter cannot smoothly deliver the stent to the coronary artery stenosis. Since coronary surgery is performed under X-ray irradiation, if the stent cannot be delivered quickly, the medical staff and patients will be exposed to X-rays for a long time, which will affect their physical health. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a coronary artery mother-daughter catheter.

[0005] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] A coronary mother-daughter catheter comprises a mother tube, a daughter tube and a driving mechanism, wherein the daughter tube is located inside the mother tube, and the driving mechanism comprises a hand-held part, the mother tube is connected to the hand-held part, a driving component and a linkage component are arranged inside the hand-held part, and the driving component comprises a sliding column slidably connected to the top of the hand-held part, the top end of the sliding column penetrates through the outside of the hand-held part and is connected and fixed to a pressing block, the bottom end of the sliding column penetrates through the inside of the hand-held part and is connected and fixed to a sliding plate, the sliding plate is slidably connected to the inside of the hand-held part, and an inclined panel is respectively arranged on both sides of the bottom of the sliding plate.

[0007] Furthermore, the linkage assembly includes guide frames fixed on both sides of the bottom inner side of the hand-held part, and a sliding seat 1 and a sliding seat 2 are respectively slidably connected between the two groups of guide frames. The sub-tube is connected to the sliding seat 1 through a steel wire, and a fixing plate is fixed on the guide frame. A spring is provided between the fixing plate and the sliding seat 2, and the spring is sleeved on the guide frame.

[0008] Furthermore, the linkage assembly also includes a supporting shaft fixed to the bottom inner portion of the hand-held portion, a rotating member is rotatably connected to the supporting shaft, the inclined ends of the two inclined panels are respectively squeezed together with the two ends of the rotating member, a fixed shaft is respectively fixed on both sides of the rotating member, the tops of the two fixed shafts are respectively movably connected with connecting member 1 and connecting member 2, and the other ends of connecting member 1 and connecting member 2 are respectively movably connected to sliding seat 1 and sliding seat 2.

[0009] Furthermore, the connecting member 1 and the sliding seat 1 as well as the connecting member 2 and the sliding seat 2 are movably connected via a movable connecting seat.

[0010] Furthermore, the bottom end of the fixed shaft passes through the bottom of the rotating member and extends to the inside of the hand-held part, and a guide groove matching with the fixed shaft is provided on the inner wall of the hand-held part.

[0011] Furthermore, the guide frame is a cylinder with a U-shaped structure, and the hand-held part is provided with an entry and exit hole that matches the steel wire.

[0012] Furthermore, a pressing groove is provided on the outer surface of the pressing block, and anti-slip grooves are provided inside the pressing groove. Limiting blocks are provided on the outer surfaces of both sides of the sliding plate, and limiting sliding grooves matching with the limiting blocks are provided on the inner walls of both sides of the hand-held part.

[0013] Furthermore, the sub-tube is provided with a plurality of through holes, the hand-held part is provided with a sliding hole matched with the sliding column, and the inner wall of the sliding hole is provided with a sealing gasket matched with the sliding column.

[0014] Beneficial effects of the utility model:

[0015] The utility model can realize the extension and retraction of the sub-tube through the design of the driving mechanism, improve the extension and retraction stability and accuracy of the sub-tube at the main tube mouth, and drive the sub-tube to extend and retract by the steel wire, so that the sub-tube has a certain impact strength and can more easily overcome the resistance of the coronary artery stenosis.

[0016] The utility model adopts the design of the driving component, so that the linkage component can be quickly driven by pressing the pressing block, thereby quickly realizing the telescopic action of the sub-tube.

[0017] The utility model adopts the design of the linkage component, so that the rotation of the rotating part can be realized under the extrusion of the inclined surfaces of the two inclined plates of the driving component, thereby driving the linkage component to realize the linkage action to push the sub-tube to perform telescopic movement.

[0018] The utility model can provide power for the reset movement of the sliding seat 2 through the design of the fixing plate and the spring, so that the linkage components can all realize the reset movement.

[0019] The utility model provides a through hole on the sub-tube, so that blood can flow through the sub-tube conveniently and blood vessels can be prevented from being blocked after the blood vessel is inserted into the sub-tube.

[0020] The utility model improves the rotation stability of the rotating part through the design of the fixed shaft and the guide groove.

[0021] The utility model improves the stability and reliability of the movement of the sliding plate through the design of the limiting block and the limiting sliding groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of a coronary artery mother-daughter catheter of the utility model;

[0024] Figure 2 This is a front view structural schematic diagram of a coronary artery mother-daughter catheter of the utility model;

[0025] Figure 3 This is a schematic diagram of the linkage assembly structure of a coronary artery mother-daughter catheter of the utility model. Figure 1 ;

[0026] Figure 4 This is a schematic diagram of the linkage assembly structure of a coronary artery mother-daughter catheter of the utility model. Figure 2 ;

[0027] Figure 5 This is a schematic diagram of the connection structure of the linkage assembly and the inclined plate of a coronary artery mother-daughter catheter of the utility model Figure 1 ;

[0028] Figure 6 This is a schematic diagram of the connection structure of the linkage assembly and the inclined plate of a coronary artery mother-daughter catheter of the utility model Figure 2 ;

[0029] Figure 7 This is a schematic diagram of the structure of a driving component of a coronary artery mother-daughter catheter of the utility model;

[0030] Figure 8 This is a schematic diagram of the connection structure of the support shaft, the rotating part and the fixed shaft of a coronary artery mother-daughter catheter of the utility model;

[0031] Fig. 9This is a schematic diagram of the local structure of the drive assembly of a coronary artery mother-daughter catheter of the utility model. Figure 1 ;

[0032] Fig.10 This is a schematic diagram of the local structure of the drive assembly of a coronary artery mother-daughter catheter of the utility model. Figure 2 ;

[0033] Fig.11 It is a schematic diagram of the structure of a driving component of a coronary artery mother-daughter catheter of the utility model.

[0034] In the figure, 1, mother tube; 2, daughter tube; 3, through hole; 4, steel wire; 5, hand-held part; 6, guide frame; 7, sliding seat 1; 8, sliding seat 2; 9, supporting shaft; 10, rotating part; 11, fixed shaft; 12, connecting part 1; 13, connecting part 2; 14, movable connecting seat; 15, fixed plate; 16, spring; 17, sliding column; 18, pressing block; 19, sliding plate; 20, limiting block; 21, limiting slide groove; 22, inclined panel; 23, pressing groove; 24, guide groove. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] See also Figure 1-11 The utility model provides a technical solution for a coronary mother-daughter catheter, a coronary mother-daughter catheter, comprising a mother tube 1, a daughter tube 2 and a driving mechanism, the daughter tube 2 is located inside the mother tube 1, the driving mechanism comprises a hand-held part 5, the mother tube 1 is connected to the hand-held part 5, a driving component and a linkage component are arranged inside the hand-held part 5, the driving component comprises a sliding column 17 slidably connected to the top of the hand-held part 5, the top end of the sliding column 17 penetrates through the outside of the hand-held part 5 and is connected and fixed to a pressing block 18, the bottom end of the sliding column 17 penetrates through the inside of the hand-held part 5 and is connected and fixed to a sliding plate 19, the sliding plate 19 is slidably connected to the inside of the hand-held part 5, and an inclined panel 22 is respectively arranged on both sides of the bottom of the sliding plate 19. Through the design of the driving component, the utility model can quickly drive the linkage component by pressing down the pressing block 18, thereby quickly realizing the telescopic action of the daughter tube 2.

[0037] Referring to the figure, the linkage assembly includes a guide frame 6 fixed on both sides of the bottom of the hand-held part 5, and a sliding seat 1 7 and a sliding seat 2 8 are slidably connected between the two groups of guide frames 6. The sub-tube 2 is connected to the sliding seat 1 7 through a steel wire 4. A fixing plate 15 is fixed on the guide frame 6, and a spring 16 is provided between the fixing plate 15 and the sliding seat 2 8. The spring 16 is sleeved on the guide frame 6. The guide frame 6 is a cylinder with a U-shaped structure. The hand-held part 5 is provided with an inlet and outlet hole that matches the steel wire 4. The utility model can provide power for the reset movement of the sliding seat 2 8 through the design of the fixing plate 15 and the spring 16, so that the linkage assembly can realize the reset movement.

[0038] See also Figure 3-6 The linkage assembly also includes a support shaft 9 fixed to the bottom of the hand-held portion 5, and a rotating member 10 is rotatably connected to the support shaft 9. The inclined ends of the two inclined panels 22 are respectively squeezed together with the two ends of the rotating member 10. A fixed shaft 11 is fixed on both sides of the rotating member 10, and the tops of the two fixed shafts 11 are respectively movably connected with a connecting member 12 and a connecting member 2 13. The other ends of the connecting member 12 and the connecting member 2 13 are respectively movably connected to the sliding seat 1 7 and the sliding seat 2 8. The connecting member 12 and the sliding seat 1 7 and the connecting member 2 13 and the sliding seat 2 8 are movably connected through a movable connecting seat 14. The guide frame 6 is a cylinder with a U-shaped structure. The hand-held portion 5 is provided with an inlet and outlet hole that matches the steel wire 4. The utility model uses the design of the linkage assembly to realize the rotation of the rotating member 10 under the inclined extrusion of the two inclined panels 22 of the driving assembly, thereby driving the linkage assembly to realize the linkage action to promote the sub-tube 2 to perform telescopic movement.

[0039] See also Figure 3-6 The bottom end of the fixed shaft 11 passes through the bottom of the rotating member 10 and extends to the inside of the hand-held portion 5. A guide groove 24 matching the fixed shaft 11 is provided on the inner wall of the hand-held portion 5. The design of the fixed shaft 11 and the guide groove 24 improves the rotation stability of the rotating member 10.

[0040] See also Fig.11 The outer surface of the pressing block 18 is provided with a pressing groove 23, and the inside of the pressing groove 23 is provided with an anti-slip pattern. The design of the pressing groove 23 and the anti-slip pattern makes it convenient for the user to press the pressing block 18. The outer surfaces of both sides of the sliding plate 19 are provided with limit blocks 20, and the inner walls of both sides of the hand-held part 5 are provided with limit grooves 21 that cooperate with the limit blocks 20. The design of the limit blocks 20 and the limit grooves 21 improves the stability and reliability of the movement of the sliding plate 19.

[0041] See also Figure 2 A plurality of through holes 3 are provided on the sub-tube 2. By providing the through holes 3 on the sub-tube 2, blood can flow through the sub-tube 2 to avoid blocking the blood vessels after the sub-tube 2 is inserted. A sliding hole matching the sliding column 17 is provided on the hand-held portion 5. A sealing gasket matching the sliding column 17 is provided on the inner wall of the sliding hole. The sealing gasket is designed to improve the sealing performance of the hand-held portion 5 and prevent foreign matter from entering the hand-held portion 5.

[0042] When in use, the pressing block 18 can be pressed down to drive the sliding column 17 to descend. The sliding column 17 descends and pushes the two inclined panels 22 with opposite inclined surfaces to descend through the sliding plate 19. The inclined panels 22 descend and push the ends of the rotating member 10 through the inclined surface extrusion, thereby pushing the rotating member 10 to rotate. While the rotating member 10 rotates, the connecting member 1 12 and the connecting member 2 13 are driven to make an arc motion through the two fixed shafts 11. While the connecting member 1 12 and the connecting member 2 13 are making an arc motion, the other ends will pull the sliding seat 1 7 and the sliding seat 2 8 to make a linear motion respectively. While the sliding seat 1 7 moves, the steel wire 4 The sub-tube 2 is pulled to move in the mother tube 1, thereby realizing the expansion and contraction of the sub-tube 2, so that the sub-tube 2 has a certain impact strength, and can more easily overcome the resistance of the coronary stenosis. The sliding seat 2 8 will squeeze the spring 16 while moving. In this way, when the user releases the pressing block 18, the sliding seat 2 8 will reset and move under the action of the spring 16. The reset movement of the sliding seat 2 8 will pull the rotating member 10 to reset and rotate through the connecting member 2 13. The reset rotation of the rotating member 10 will push the sliding seat 1 7 to reset through the connecting member 1 12. The reset movement of the sliding seat 1 7 will push the sub-tube 2 to extend out of the mother tube 1 through the steel wire 4.

[0043] During specific use, the extension and retraction of the sub-tube 2 can be achieved by pressing down the pressing block 18. The surgical method is to first pass the head of the sub-tube 2 through a narrow place, release the stent to the side away from the mother tube 1, and then move the mother tube 1 back while releasing the stent. The above method is conducive to the fixation of the stent.

[0044] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A coronary artery mother-daughter catheter, characterized in that: The invention comprises a main tube (1), a sub-tube (2) and a driving mechanism, wherein the sub-tube (2) is located inside the main tube (1), and the driving mechanism comprises a hand-held part (5). The main tube (1) is connected to the hand-held part (5), and a driving component and a linkage component are arranged inside the hand-held part (5). The driving component comprises a sliding column (17) slidably connected to the top of the hand-held part (5), the top end of the sliding column (17) penetrates through the outside of the hand-held part (5) and is connected and fixed to a pressing block (18), the bottom end of the sliding column (17) penetrates through the inside of the hand-held part (5) and is connected and fixed to a sliding plate (19), the sliding plate (19) is slidably connected to the inside of the hand-held part (5), and an inclined panel (22) is respectively arranged on both sides of the bottom of the sliding plate (19).

2. A coronary artery mother-daughter catheter according to claim 1, characterized in that: The linkage assembly comprises guide frames (6) fixed on both sides of the inner bottom of the hand-held part (5); a sliding seat 1 (7) and a sliding seat 2 (8) are slidably connected between the two groups of guide frames (6); the sub-tube (2) is connected to the sliding seat 1 (7) through a steel wire (4); a fixing plate (15) is fixed on the guide frame (6); a spring (16) is provided between the fixing plate (15) and the sliding seat 2 (8); and the spring (16) is sleeved on the guide frame (6).

3. A coronary artery mother-daughter catheter according to claim 2, characterized in that: The linkage assembly also includes a support shaft (9) fixed to the inner bottom of the hand-held part (5), a rotating member (10) is rotatably connected to the support shaft (9), the inclined ends of the two inclined panels (22) are respectively pressed together with the two ends of the rotating member (10), a fixed shaft (11) is respectively fixed on both sides of the rotating member (10), the tops of the two fixed shafts (11) are respectively movably connected to a connecting member 1 (12) and a connecting member 2 (13), and the other ends of the connecting member 1 (12) and the connecting member 2 (13) are respectively movably connected to the sliding seat 1 (7) and the sliding seat 2 (8).

4. A coronary artery mother-daughter catheter according to claim 3, characterized in that: The connecting member 1 (12) and the sliding seat 1 (7) as well as the connecting member 2 (13) and the sliding seat 2 (8) are movably connected via a movable connecting seat (14).

5. A coronary artery mother-daughter catheter according to claim 4, characterized in that: The bottom end of the fixed shaft (11) passes through the bottom of the rotating member (10) and extends to the inside of the hand-held part (5). A guide groove (24) matching with the fixed shaft (11) is provided on the inner wall of the hand-held part (5).

6. A coronary artery mother-daughter catheter according to claim 5, characterized in that: The guide frame (6) is a cylindrical body with a U-shaped structure, and the hand-held portion (5) is provided with an inlet and outlet hole that matches the steel wire (4).

7. A coronary artery mother-daughter catheter according to claim 6, characterized in that: The outer surface of the pressing block (18) is provided with a pressing groove (23), and the interior of the pressing groove (23) is provided with anti-slip grooves. The outer surfaces of both sides of the sliding plate (19) are provided with limit blocks (20), and the inner walls of both sides of the hand-held part (5) are provided with limit sliding grooves (21) that match the limit blocks (20).

8. The coronary artery mother-daughter catheter according to claim 7, characterized in that: The sub-tube (2) is provided with a plurality of through holes (3), the hand-held part (5) is provided with a sliding hole matched with the sliding column (17), and the inner wall of the sliding hole is provided with a sealing gasket matched with the sliding column (17).

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