Radiological interventional catheter fixation device

Abstract

The utility model relates to medical auxiliary instrument technical field, propose a kind of radio intervention catheter fixing device, including shell, the bottom surface of the shell is fixed with adhesive layer, the shell is equipped with round hole, the first arc-shaped rod is fixed in the round hole, the second arc-shaped rod that can rotate relative to the first arc-shaped rod is arranged on the first arc-shaped rod, the side of the shell is equipped with strip slot and the circular slot at strip slot one end, the rotating member for poking second arc-shaped rod is arranged in the circular slot, including the utility model in by right to left push rotating member in strip slot, make rotating member drive second arc-shaped rod overcome the elastic force of elastic member and rotate clockwise relative to the first arc-shaped rod, to facilitate the catheter is placed into bayonet, and after loosening rotating member, under the resilience of elastic member, make second arc-shaped rod quickly close on the first arc-shaped rod, catheter is clamped and fixed in the bayonet formed by the first arc-shaped rod and second arc-shaped rod, realize the automatic clamping of catheter.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary device technology, specifically to a radiological interventional catheter fixation device. Background Technology

[0002] In interventional radiology procedures involving catheter displacement, the catheter needs to be accurately placed at a specific location to be effective. Catheter displacement can affect treatment outcomes and may even damage surrounding tissues. Proper catheter fixation reduces traction and friction at the puncture site, thereby lowering the risk of bleeding.

[0003] A search revealed that CN212491096U discloses a catheter fixation device for interventional radiology, comprising a vertical base plate. The base plate has axially rotating shafts on its upper and lower front sides, with gears coaxially connected to the front of each shaft. Two gears mesh with each other. A left-right sway bar is located at the front of each gear. Arc-shaped plates are located on the right side of the opposite ends of the two sway bars, with their openings facing each other. A worm gear is coaxially located at the rear end of the lower gear, and is rotatably connected to the lower shaft. A through groove is provided on the base plate directly behind the two arc-shaped plates. This catheter fixation device can clamp the catheter, preventing it from moving freely and affecting the safety of the interventional procedure.

[0004] However, the above-mentioned interventional catheter fixation device still has the following problems: The above-mentioned interventional catheter fixation device achieves the clamping and rotation of two arc-shaped plates by turning the crank handle, which is achieved by the meshing of the worm gear and the mutual meshing of the gears on the two rocker arms. The above-mentioned interventional catheter fixation device requires turning the crank handle when taking out and putting in the catheter, which causes inconvenience. Since the crank handle extends to the outside, it is easy to be accidentally touched and loosened, which affects the fixation of the catheter. Utility Model Content

[0005] This invention proposes a fixation device for interventional radiology catheters, which solves the problem of accidental activation of the crank handle in the prior art.

[0006] The technical solution of this utility model is as follows: A radiological interventional catheter fixation device includes a housing, an adhesive layer fixed on the bottom surface of the housing, a circular hole on the housing, a first arc-shaped rod fixed in the circular hole, a second arc-shaped rod that can rotate relative to the first arc-shaped rod on the first arc-shaped rod, a strip groove on one side of the housing and a circular groove at one end of the strip groove, a rotating component for actuating the second arc-shaped rod in the circular groove, a spring groove on the surface of the housing, an elastic component for pulling the second arc-shaped rod to close on the first arc-shaped rod in the spring groove, and a bayonet for securing the catheter after the second arc-shaped rod and the first arc-shaped rod are closed.

[0007] Preferably, the first arc-shaped rod comprises two parts: a small arc segment and a large arc segment. The small arc segment of the first arc-shaped rod is fixed inside the circular hole, and the large arc segment of the first arc-shaped rod extends outward from the circular hole.

[0008] Preferably, the tail of the small arc segment of the first arc-shaped rod is provided with a U-shaped movable opening, and arc-shaped limiting grooves are provided on both the upper and lower sides of the U-shaped movable opening.

[0009] Preferably, the second arc-shaped rod is entirely arc-shaped, and the diameter of the small arc-shaped segment of the second arc-shaped rod is the same as that of the first arc-shaped rod. The second arc-shaped rod is embedded in the U-shaped movable opening.

[0010] Preferably, a first limiting shaft is fixed at the middle position of the second arc-shaped rod, and a second limiting shaft is fixed at the tail of the second arc-shaped rod. Both the first limiting shaft and the second limiting shaft are slidably limited within the arc-shaped limiting groove, and an arc-shaped toothed surface is provided on the outer arc surface of the second arc-shaped rod.

[0011] Preferably, the rotating component includes a rotating shaft, which is rotatably disposed in a circular groove, and a gear that meshes with an arc-shaped tooth surface is fixed on the rotating shaft.

[0012] Preferably, the elastic element includes a tension spring, a first spring rod is fixed on the second limiting shaft, a second spring rod is fixed in the spring groove, and the two ends of the tension spring are respectively fixed to the first spring rod and the second spring rod.

[0013] Preferably, a portion of the gear passes through a circular groove and extends into a strip groove.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. In this utility model, the rotating component is pushed from right to left in the strip groove, causing the rotating component to drive the second arc-shaped rod to overcome the elastic force of the elastic component and rotate clockwise relative to the first arc-shaped rod, so as to put the conduit into the bayonet. After the rotating component is released, the elastic force of the elastic component recovers, causing the second arc-shaped rod to quickly close on the first arc-shaped rod, thus securing the conduit in the bayonet formed by the first arc-shaped rod and the second arc-shaped rod, thereby achieving automatic securing of the conduit.

[0016] 2. In this utility model, a portion of the gear passes through a circular groove and extends into a strip groove. The gear is pushed from right to left through the strip groove, causing it to rotate clockwise around the pivot axis. This facilitates the insertion of the guide tube into the bayonet. The gear is hidden within the circular and strip grooves, reducing accidental activation. Furthermore, the elastic force of the tension spring further prevents the second and first arc rods from opening easily, thus solving the problem of accidental activation of the crank handle in the prior art. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of a radiological interventional catheter fixation device proposed in this utility model;

[0019] Figure 2 This is a top view of the structure of a radiological interventional catheter fixation device proposed in this utility model;

[0020] Figure 3 This is a half-sectional structural diagram of a radiological interventional catheter fixation device proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the first arc-shaped rod and the second arc-shaped rod proposed in this utility model;

[0022] In the diagram: 1. Shell; 11. Circular hole; 12. Strip groove; 13. Circular groove; 14. Spring groove; 2. First arc-shaped rod; 21. Arc-shaped limiting groove; 22. U-shaped movable opening; 3. Second arc-shaped rod; 31. First limiting shaft; 32. Arc-shaped tooth surface; 33. Second limiting shaft; 4. Rotating component; 41. Rotating shaft; 42. Gear; 5. Elastic component; 51. Tension spring; 52. First spring rod; 53. Second spring rod. Detailed Implementation

[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0024] Please see Figure 1 and Figure 2This utility model provides a technical solution: a radiological interventional catheter fixation device, including a housing 1, an adhesive layer fixed to the bottom surface of the housing 1, a circular hole 11 on the housing 1, a first arc-shaped rod 2 fixed in the circular hole 11, a second arc-shaped rod 3 rotatable relative to the first arc-shaped rod 2, a strip groove 12 on one side of the housing 1 and a circular groove 13 at one end of the strip groove 12, a rotating component 4 for actuating the second arc-shaped rod 3 in the circular groove 13, and a spring groove 14 on the surface of the housing 1, a component for pulling the second arc-shaped rod 3 in the spring groove 14. The elastic element 5 attached to the first arc-shaped rod 2 and the second arc-shaped rod 3, after closing with the first arc-shaped rod 2, form a bayonet for securing the conduit. The rotating element 4 is pushed from right to left through the strip groove 12, causing the rotating element 4 to drive the second arc-shaped rod 3 to overcome the elastic force of the elastic element 5 and rotate clockwise relative to the first arc-shaped rod 2, so as to facilitate the placement of the conduit into the bayonet. After the rotating element 4 is released, the elastic force of the elastic element 5 recovers, causing the second arc-shaped rod 3 to quickly close on the first arc-shaped rod 2, securing the conduit in the bayonet formed by the first arc-shaped rod 2 and the second arc-shaped rod 3, thus achieving automatic securing of the conduit.

[0025] Please see Figure 3 and Figure 4 The first arc-shaped rod 2 comprises a small arc segment and a large arc segment. The small arc segment of the first arc-shaped rod 2 is fixed inside the circular hole 11, and the large arc segment of the first arc-shaped rod 2 extends outward from the circular hole 11. The tail of the small arc segment of the first arc-shaped rod 2 is provided with a U-shaped movable opening 22, and arc-shaped limiting grooves 21 are provided on both the upper and lower sides of the U-shaped movable opening 22. The second arc-shaped rod 3 is entirely arc-shaped, and the diameter of the second arc-shaped rod 3 is the same as that of the small arc segment of the first arc-shaped rod 2. The second arc-shaped rod 3 is embedded in the U-shaped movable opening 22. A first limiting shaft 31 is fixed at the middle position of the second arc-shaped rod 3, and a second limiting shaft 31 is fixed at the tail of the second arc-shaped rod 3. The two limiting shafts 33, the first limiting shaft 31 and the second limiting shaft 33 are both slidably limited within the arc-shaped limiting groove 21. The outer arc surface of the second arc-shaped rod 3 is provided with an arc-shaped tooth surface 32. When the second arc-shaped rod 3 rotates counterclockwise relative to the first arc-shaped rod 2 under the drive of the rotating component 4, the sliding limitation of the first limiting shaft 31 and the second limiting shaft 33 on the second arc-shaped rod 3 within the arc-shaped limiting groove 21 enables the second arc-shaped rod 3 to retract into the U-shaped movable opening 22, thereby opening the bayonet between the second arc-shaped rod 3 and the first arc-shaped rod 2, so as to press the interventional radiology catheter through the large arc-shaped section of the first arc-shaped rod 2 into the small arc-shaped section.

[0026] Please see Figure 1 and Figure 3The rotating component 4 includes a rotating shaft 41, which is rotatably disposed in a circular groove 13. A gear 42 that meshes with the arc-shaped tooth surface 32 is fixed on the rotating shaft 41. Pushing the gear 42 causes the gear 42 to rotate clockwise around the rotating shaft 41. In turn, the meshing of the gear 42 with the arc-shaped tooth surface 32 on the outer arc surface of the second arc-shaped rod 3 drives the second arc-shaped rod 3 to rotate relative to the first arc-shaped rod 2.

[0027] Please see Figure 1 and Figure 3 The elastic element 5 includes a tension spring 51, a first spring rod 52 fixed on the second limiting shaft 33, and a second spring rod 53 fixed in the spring groove 14. The two ends of the tension spring 51 are respectively fixed on the first spring rod 52 and the second spring rod 53. When the second arc-shaped rod 3 is driven by the rotating element 4 to rotate counterclockwise relative to the first arc-shaped rod 2, the distance between the first spring rod 52 and the second spring rod 53 gradually increases, thereby stretching the tension spring 51. After the gear 42 is released, under the recovery of the elastic force of the tension spring 51, the second arc-shaped rod 3 quickly closes on the first arc-shaped rod 2, and the conduit is secured in the bayonet formed by the first arc-shaped rod 2 and the second arc-shaped rod 3.

[0028] In a preferred embodiment, a portion of the gear 42 passes through the circular groove 13 and extends into the strip groove 12. The gear 42 is pushed from right to left within the strip groove 12, causing it to rotate clockwise around the pivot 41. This facilitates the insertion of the guide tube into the bayonet. The gear 42 is concealed within the circular groove 13 and the strip groove 12, reducing accidental contact. Furthermore, the elastic force of the tension spring 51 further prevents the second arc-shaped rod 3 and the first arc-shaped rod 2 from opening easily.

[0029] The working principle and usage process of this utility model are as follows: When using it, as follows... Figure 1 and Figure 2 In the direction shown, the gear 42 is pushed from right to left within the slot 12, causing it to rotate clockwise around the shaft 41. This, in turn, results in the gear 42 meshing with the arc-shaped tooth surface 32 on the outer arc of the second arc-shaped rod 3. Simultaneously, the sliding limit of the first limiting shaft 31 and the second limiting shaft 33 on the second arc-shaped rod 3 within the arc-shaped limiting groove 21 allows the second arc-shaped rod 3 to retract into the U-shaped movable opening 22, thereby opening the latch between the second arc-shaped rod 3 and the first arc-shaped rod 2, facilitating the... The interventional catheter is pressed into the small arc section through the large arc section of the first arc rod 2, and then the gear 42 is released. During the above process, due to the sliding of the second arc rod 3, the distance between the first spring rod 52 and the second spring rod 53 gradually increases, thereby stretching the tension spring 51. After the gear 42 is released, under the recovery of the elastic force of the tension spring 51, the second arc rod 3 quickly closes on the first arc rod 2, securing the catheter in the bayonet formed by the first arc rod 2 and the second arc rod 3.

[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A device for fixing a radiological interventional catheter, comprising a housing (1), wherein an adhesive layer is fixed to the bottom surface of the housing (1), characterized in that, The housing (1) is provided with a circular hole (11), and a first arc-shaped rod (2) is fixed in the circular hole (11). A second arc-shaped rod (3) that can rotate relative to the first arc-shaped rod (2) is provided on the first arc-shaped rod (2). A strip groove (12) and a circular groove (13) located at one end of the strip groove (12) are provided on one side of the housing (1). A rotating component (4) for moving the second arc-shaped rod (3) is provided in the circular groove (13). A spring groove (14) is provided on the surface of the housing (1). An elastic component (5) for pulling the second arc-shaped rod (3) to close on the first arc-shaped rod (2) is provided in the spring groove (14). After the second arc-shaped rod (3) and the first arc-shaped rod (2) are closed, a bayonet for securing the conduit is formed.

2. The interventional catheter fixation device according to claim 1, characterized in that, The first arc-shaped rod (2) includes two parts: a small arc segment and a large arc segment. The small arc segment of the first arc-shaped rod (2) is fixed inside the circular hole (11), and the large arc segment of the first arc-shaped rod (2) extends outward from the circular hole (11).

3. The interventional catheter fixation device according to claim 2, characterized in that, The tail of the small arc segment of the first arc rod (2) is provided with a U-shaped movable opening (22), and the upper and lower sides of the U-shaped movable opening (22) are provided with arc-shaped limiting grooves (21).

4. The interventional catheter fixation device according to claim 3, characterized in that, The second arc rod (3) is entirely arc-shaped, and the diameter of the small arc segment of the second arc rod (3) is the same as that of the first arc rod (2). The second arc rod (3) is embedded in the U-shaped movable opening (22).

5. A radiological interventional catheter fixation device according to claim 4, characterized in that, The second arc-shaped rod (3) has a first limiting shaft (31) fixed at the middle position and a second limiting shaft (33) fixed at the tail. Both the first limiting shaft (31) and the second limiting shaft (33) are slidably limited in the arc-shaped limiting groove (21). The outer arc surface of the second arc-shaped rod (3) is provided with an arc-shaped tooth surface (32).

6. A radiological interventional catheter fixation device according to claim 5, characterized in that, The rotating component (4) includes a rotating shaft (41), which is rotatably disposed in a circular groove (13), and a gear (42) is fixed on the rotating shaft (41) to mesh with an arc-shaped tooth surface (32).

7. A radiological interventional catheter fixation device according to claim 5, characterized in that, The elastic element (5) includes a tension spring (51), a first spring rod (52) is fixed on the second limiting shaft (33), a second spring rod (53) is fixed in the spring groove (14), and the two ends of the tension spring (51) are respectively fixed on the first spring rod (52) and the second spring rod (53).

8. A radiological interventional catheter fixation device according to claim 6, characterized in that, A portion of the gear (42) passes through the circular groove (13) and extends into the strip groove (12).

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