Transradial artery angiography catheter

Abstract

The utility model discloses a transradial artery angiographic catheter which comprises an angiographic catheter body, the liquid inlet end of the angiographic catheter body is communicated with a corrugated pipe, the lower end of the corrugated pipe is communicated with a long pipe, a limiting assembly used for limiting the unfolding length of the corrugated pipe is fixed to the long pipe, and a ring is installed on the limiting assembly through an adjusting assembly. The length of the transradial artery angiography catheter is convenient to adjust, the position and the rotating angle of the ring are convenient to adjust, and a worker can conveniently operate the transradial artery angiography catheter.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment and relates to a transradial artery angiography catheter. Background Art

[0002] A transradial angiography catheter is an interventional medical device primarily used in the diagnosis and treatment of cardiovascular disease. It enters the body through the radial artery at the wrist and reaches the heart and surrounding blood vessels for angiography or interventional procedures. Compared to the traditional femoral artery approach, the transradial approach is widely adopted due to its minimal invasiveness, increased patient comfort, and faster postoperative recovery.

[0003] The Chinese utility model patent application number 202122674181.4 discloses a transradial artery angiography catheter, comprising a catheter body, which is a straight tube structure; a first curved section, which is a smooth outer curved section formed by bending outward 24° along the distal end of the catheter body; a second curved section, which is a smooth inner curved section formed by bending inward 158° along the distal end of the first curved section; a catheter head end, which is a straight section formed by bending inward along the distal end of the second curved section; and a catheter tail end, which is arranged at the proximal end of the catheter body. Since the shape of this catheter is designed according to the transradial approach, when used, the catheter enters the ascending aorta through the radial artery and can pass through the aortic valve with the help of a guidewire to form a loop without the need for special operating techniques. However, the transradial angiography catheter in this technical solution has a fixed length, which is inconvenient to adjust and cannot be extended. Doctors encounter different conditions and patients, which often results in the transradial angiography catheter being insufficient in length and unable to reach the location of the lesion. In addition, the length of the transradial angiography catheter that leaks out of the patient's body is too short, making it inconvenient for doctors to operate. Therefore, it is necessary to design a transradial angiography catheter to solve the above problems. Utility Model Content

[0004] In view of the above problems and to overcome the defects of the prior art, the present invention proposes a transradial artery angiography catheter. The purpose of the present invention is to facilitate the adjustment of the length of the transradial artery angiography catheter, the position and rotation angle of the finger ring, and the operation of the staff.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: the present invention includes an angiographic catheter, the liquid inlet end of the angiographic catheter is connected to a bellows, the lower end of the bellows is connected to a long tube, a limit assembly for limiting the expansion length of the bellows is fixed on the long tube, and a finger ring is installed on the limit assembly through an adjustment assembly.

[0006] Preferably, the limiting assembly includes a placing plate fixed on the long tube, a turntable is rotatably connected to the placing plate, a placing hole is provided on the turntable, a movable groove is provided on the placing plate, a telescopic rod is slidably provided on the movable groove, the telescopic rod passes through the placing hole at the upper side of the placing hole, a clamping block is fixed to the upper end of the telescopic rod, and a positioning assembly for limiting the rotation of the turntable is installed on the placing plate.

[0007] Preferably, the number of the placement hole, the movable slot, the telescopic rod and the clamping block is two each.

[0008] Preferably, the placement hole is arc-shaped, and the moving groove is straight.

[0009] Preferably, the positioning assembly includes a pushing block slidably arranged in the placement plate, a positioning block is slidably connected to the pushing block, a positioning groove for the positioning block to be inserted is provided at the lower part of the turntable, a first spring is fixed to the lower end of the positioning block, the lower end of the first spring is fixed in the pushing block, and a pull plate is fixed to the lower end of the pushing block.

[0010] Preferably, the adjustment assembly includes an arc-shaped plate fixed on the telescopic rod, an adjustment slot is provided on the arc-shaped plate, a tooth row sliding along the arc-shaped side wall of the adjustment slot is provided in the adjustment slot, a limiting tooth engaged with the tooth row is fixed in the sliding slot, an F-shaped block is fixed on the tooth row, the F-shaped block is slidably provided on the arc-shaped plate, and the finger ring is rotatably connected to the F-shaped block.

[0011] Preferably, the telescopic rod includes a long rod slidably set on the movable groove, a short rod is inserted into the long rod, a plurality of limit holes are opened on the long rod, a limit block is slidably set on the short rod, the limit block is fixed to the short rod by a second spring, the limit block can be inserted into the limit hole, the arc plate is fixed to the upper end outer wall of the long rod, and the clamping block is fixed to the upper end side wall of the short rod.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The utility model can adjust the length of the transradial artery angiography catheter by the cooperation of the bellows and the limiting component, and can adjust the position and rotation angle of the finger ring by the finger ring and the adjusting component, which is convenient for the staff to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the position of the curved plate in the present invention;

[0016] Figure 3 This is a schematic diagram of the position of the movable slot in the present utility model;

[0017] Figure 4 For this utility model Figure 3 Enlarged schematic diagram of point A in the middle.

[0018] Figure numerals: 1. angiographic catheter; 2. bellows; 3. long tube; 4. finger ring; 5. placement plate; 6. turntable; 7. placement hole; 8. moving slot; 10. clamping block; 11. pushing block; 12. positioning block; 13. positioning slot; 14. first spring; 15. pull plate; 16. arc-shaped plate; 17. adjusting slot; 18. tooth row; 19. limiting tooth; 20. F-shaped block; 21. long rod; 22. short rod; 23. limiting hole; 24. limiting block; 25. second spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] The following is combined with Figure 1-4 The specific implementation methods of the present utility model are further described in detail.

[0021] In this embodiment, by Figure 1-3 As shown, the present invention includes an angiographic catheter 1, which includes a catheter tip, a first curved section, a second curved section, and a catheter body. The above content can refer to the prior art of the transradial artery angiographic catheter with application number 202122674181.4. The liquid inlet end of the angiographic catheter 1 is connected to a bellows 2, and the lower end of the bellows 2 is connected to a long tube 3. A limit assembly for limiting the expansion length of the bellows 2 is fixed to the long tube 3. A finger ring 4 is installed on the limit assembly through an adjustment assembly;

[0022] The bellows 2 can be lengthened and shortened. The staff starts to lengthen the bellows 2 from the connection between the angiographic catheter 1 and the bellows 2 for adjustment. After adjusting the length of the bellows 2, the remaining bellows 2 is fixed by the limiting component to prevent the remaining bellows 2 from unfolding during the operation and affecting the staff's use. The horizontal position and rotation angle of the finger ring 4 can be adjusted through the adjustment component to facilitate the use of the staff.

[0023] In this embodiment, by Figure 2-3As shown, the limiting assembly includes a placement plate 5 fixed on the long tube 3, the placement plate 5 is rotatably connected to a turntable 6, the turntable 6 is provided with a placement hole 7, the placement plate 5 is provided with a moving groove 8, a telescopic rod is slidably provided on the moving groove 8, the telescopic rod can slide along the inner wall of the placement hole 7, the upper end of the telescopic rod passes through the placement hole 7 and is on the upper side of the placement hole 7, a clamping block 10 is fixed to the upper end of the telescopic rod, and a positioning assembly for limiting the rotation of the turntable 6 is installed on the placement plate 5;

[0024] The height of the clamping block 10 is controlled by adjusting the length of the telescopic rod, which is used to limit the expansion of the unexpanded bellows 2 during use. The two telescopic rods approaching each other can drive the clamping block 10 close to the bellows 2, clamping the bellows 2 to prevent the unexpanded bellows 2 from expanding during use. The two telescopic rods moving away from each other drive the clamping block 10 away from each other, releasing the limit of the bellows 2, and the length of the bellows 2 can be adjusted.

[0025] In this embodiment, by Figure 2-3 As shown, there are two each of the placement hole 7, the movable slot 8, the telescopic rod and the clamping block 10;

[0026] The two clamping blocks 10 can effectively clamp and limit the bellows 2, thereby preventing the bellows 2 from being expanded.

[0027] In this embodiment, by Figure 2-3 As shown, the placement hole 7 is arc-shaped, the movable groove 8 is straight-line, and both ends of the placement hole 7 and the movable groove 8 are close to the corrugated tube 2 at one end and away from the corrugated tube 2 at the other end;

[0028] In the normal state, the telescopic rod is located close to the placement hole 7 and close to the side wall of the corrugated tube 2. At this time, the positioning assembly positions the turntable 6, the turntable 6 cannot rotate, and the two clamping blocks 10 clamp the corrugated tube 2, and the corrugated tube 2 cannot be adjusted;

[0029] After the control positioning assembly releases the limit on the turntable 6, the turntable 6 is rotated counterclockwise, and the turntable 6 pushes the telescopic rod to move along the inner wall of the placement hole 7, gradually away from the bellows 2, and the two clamping blocks 10 are away from the bellows 2. At this time, the expansion limit of the bellows 2 is released, and the length of the bellows 2 can be adjusted. When the telescopic rod moves along the placement hole 7, it also moves along the moving groove 8. The moving groove 8 and the bottom of the telescopic rod are both square, which limits the rotation of the telescopic rod.

[0030] In this embodiment, by Figure 3-4As shown, the positioning assembly includes a pushing block 11 slidably arranged in the placement plate 5, a positioning block 12 is slidably connected to the pushing block 11, a positioning slot 13 for the positioning block 12 to be inserted is provided at the lower part of the turntable 6, a first spring 14 is fixed to the lower end of the positioning block 12, the lower end of the first spring 14 is fixed in the pushing block 11, and a pull plate 15 is fixed to the lower end of the pushing block 11;

[0031] The side of the positioning block 12 close to the outer wall of the turntable 6 is a slope, and the lower end of the slope is flush with the lower side of the turntable 6. When the pull plate 15 is pulled away from the corrugated tube 2, the pull plate 15 drives the push block 11 and the positioning block 12 to move, and the positioning block 12 squeezes the inner wall of the positioning groove 13 and gradually descends under the influence of the slope. When the upper side of the positioning block 12 is flush with the lower side of the turntable 6, the positioning block 12 is fully inserted into the push block 11. At this time, the limit of the turntable 6 is released, and the turntable 6 can be rotated to release the limit of the bellows 2 and adjust the bellows 2.

[0032] In this embodiment, by Figure 2-3 As shown, the adjustment assembly includes a curved plate 16 fixed to the telescopic rod, the curved plate 16 having an adjustment slot 17, a tooth row 18 sliding along the curved side wall of the adjustment slot 17, a limiting tooth 19 fixed in the sliding slot and engaging with the tooth row 18, an F-shaped block 20 fixed to the tooth row 18, the F-shaped block 20 slidably set on the curved plate 16, the finger ring 4 is plugged into the F-shaped block 20 via a round rod, and the round rod is rotatably connected to the F-shaped block 20 via a bearing;

[0033] The tooth row 18 can slide along the arc-shaped inner side wall of the adjusting groove 17 in the adjusting groove 17, and can also slide horizontally along the arc plate 16 in the adjusting groove 17 perpendicular to the center of the bellows 2. The arc plate 16 is located between the two protrusions of the F-shaped block 20, limiting the tooth row 18 in the up and down directions to prevent the tooth row 18 from separating from the arc plate 16.

[0034] When adjusting the position of the finger ring 4, the staff first pulls the finger ring 4 to drive the F-shaped block 20 and the tooth row 18 to move away from the bellows 2, so that the tooth row 18 is disengaged from the limit teeth 19. At this time, the tooth row 18 can move along the inner wall of the arc groove. After adjusting the horizontal position of the finger ring 4, pinch the two finger rings 4 with your fingers and push the tooth row 18 to move towards the bellows 2, so that the tooth row 18 contacts the limit teeth 19. At this time, the tooth row 18 cannot move along the inner wall of the arc plate 16. The tooth row 18 is limited by the limit teeth 19 and the fingers for use.

[0035] In this embodiment, by Figure 2-3As shown, the telescopic rod includes a long rod 21 slidably set on the movable slot 8, a short rod 22 is inserted on the long rod 21, a plurality of limiting holes 23 are opened on the long rod 21, and a limiting block 24 is slidably set on the short rod 22. The limiting block 24 is fixed to the short rod 22 by a second spring 25. The limiting block 24 can be inserted into the limiting hole 23. The arc plate 16 is fixed to the upper end outer wall of the long rod 21, and the clamping block 10 is fixed to the upper end side wall of the short rod 22;

[0036] By arranging the limit block 24 so that the limit block 24 enters the short rod 22 and the limit block 24 is separated from the limit hole 23, the extension length of the short rod 22 can be adjusted to adjust the position of the bellows 2. After adjusting the height of the short rod 22, the limit block 24 is aligned with the limit hole 23 at the same height. The second spring 25 pushes the limit block 24 to be inserted into the limit hole 23 to limit the short rod 22, completing the length adjustment of the telescopic rod and the height adjustment of the clamping block 10.

[0037] The above-mentioned rotational connections all adopt bearing rotational connections, and the sliding settings all adopt sliding connections in the form of slide grooves and slide rails.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A transradial artery angiography catheter, comprising: The liquid inlet end of the angiography catheter is connected to a bellows, the lower end of the bellows is connected to a long tube, a limit assembly for limiting the expansion length of the bellows is fixed on the long tube, and a finger ring is installed on the limit assembly through an adjustment assembly; the limit assembly includes a placement plate fixed on the long tube, a turntable is rotatably connected to the placement plate, a placement hole is provided on the turntable, a movable groove is provided on the placement plate, a telescopic rod is slidably provided on the movable groove, the telescopic rod passes through the placement hole on the upper side of the placement hole, a clamping block is fixed on the upper end of the telescopic rod, and a positioning assembly for limiting the rotation of the turntable is installed on the placement plate.

2. A transradial artery angiography catheter according to claim 1, characterized in that: There are two placement holes, two moving slots, two telescopic rods and two clamping blocks.

3. The transradial artery angiography catheter according to claim 2, characterized in that: The placement hole is arc-shaped, and the moving groove is straight-shaped.

4. The transradial artery angiography catheter according to claim 1, characterized in that: The positioning assembly includes a pushing block slidably arranged in the placement plate, a positioning block is slidably connected to the pushing block, a positioning groove for the positioning block to be inserted is provided at the lower part of the turntable, a first spring is fixed to the lower end of the positioning block, the lower end of the first spring is fixed in the pushing block, and a pull plate is fixed to the lower end of the pushing block.

5. The transradial artery angiography catheter according to claim 1, characterized in that: The adjustment assembly includes an arc-shaped plate fixed on the telescopic rod, an adjustment slot is provided on the arc-shaped plate, a tooth row sliding along the arc-shaped side wall of the adjustment slot is provided in the adjustment slot, a limiting tooth engaged with the tooth row is fixed in the adjustment slot, an F-shaped block is fixed on the tooth row, the F-shaped block is slidably provided on the arc-shaped plate, and the finger ring is rotatably connected to the F-shaped block.

6. The transradial artery angiography catheter according to claim 5, characterized in that: The telescopic rod includes a long rod slidably set on the movable groove, a short rod is inserted on the long rod, a plurality of limit holes are opened on the long rod, a limit block is slidably set on the short rod, the limit block is fixed to the short rod by a second spring, the limit block can be inserted into the limit hole, the arc plate is fixed to the upper end outer wall of the long rod, and the clamping block is fixed to the upper end side wall of the short rod.

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