CN219001663U - Interventional catheter fixing device - Google Patents

Abstract

An interventional catheter fixing device, which effectively solves the problems of easy fall-off of the interventional catheter, low stability and tedious adjustment and poor practicality; it includes a box body, and the inner bottom wall of the box body is slidably connected with two symmetrical T-shaped branches. The opposite sides of the two T-shaped poles are fixedly connected with L-shaped fixed poles uniformly distributed in the horizontal direction, and the L-shaped fixed poles on the two T-shaped poles are arranged in a staggered manner. Through the strip-shaped openings on the left and right sides, the outer surface of the box is fixedly connected with a U-shaped installation frame; this structure is simple, easy to operate, and can be firmly clamped and fixed while quickly loading and unloading the interventional catheter, ensuring the interventional catheter during the interventional treatment Fixed safety and stability, so as to ensure the smooth progress of interventional therapy; the length of the interventional catheter can be flexibly adjusted according to the needs of use, the adjustment is simpler and more efficient, effectively reducing the workload of medical staff, and greatly improving the practicability of use.

Description

An interventional catheter fixation device

technical field

The utility model relates to the technical field of medical catheter fixing, in particular to an interventional catheter fixing device.

Background technique

Interventional radiology, also known as interventional therapy, is a new discipline that has developed rapidly in recent years and integrates imaging diagnosis and clinical treatment. Under the guidance and monitoring of imaging equipment such as angiography, CT, ultrasound, and magnetic resonance, it uses puncture needles, catheters, and other interventional equipment to introduce specific instruments into human lesion sites through natural orifices or tiny wounds for minimally invasive surgery. The general term for a series of techniques of treatment.

At present, when the interventional catheter is used, it is usually fixed with medical tape. When adjusting the length of the interventional catheter, it is necessary to repeatedly paste the medical tape for fixing, which is easy to make the patient feel uncomfortable. The cumbersome operation increases the burden on the medical staff. The situation of detachment may occur, which will affect the safety of interventional treatment.

Utility model content

In view of the above situation, in order to overcome the defects of the prior art, the purpose of this utility model is to provide an interventional catheter fixing device, which effectively solves the problems of easy fall-off of the interventional catheter, low stability, cumbersome adjustment and poor practicability.

The technical solution is that the utility model includes a box, the inner bottom wall of the box is slidingly connected with two symmetrical T-shaped struts, and the opposite sides of the two T-shaped struts are fixedly connected with horizontal The L-shaped fixed rods with uniform direction, the L-shaped fixed rods on the two T-shaped struts are arranged in a staggered manner, the upper side of the box is provided with a strip opening through the left and right sides, and the outer surface of the box is fixedly connected with U-shaped installation frame, the installation frame and the box body are enclosed to form an installation box, the left and right sides of the installation box are provided with openings communicating with the strip mouth, the inner walls of the installation box near the two openings are fixedly connected with fixing plates, and the fixing plates There is a guide rod running through the top, and the front end of the guide rod is provided with a driving mechanism for driving it to reciprocate in the horizontal direction. The rear end of the guide rod is fixedly connected with an L-shaped splint, and the inner wall of the installation box corresponding to the splint is fixedly connected with a clamp block. , the outer surface of the clamp block can contact the inner wall of the splint, and the rear end of the splint can penetrate the inner wall of the installation box.

Compared with the prior art, the utility model has ingenious structure and convenient operation. Through the cooperation of the T-shaped support rod, the L-shaped fixed rod and the threaded rod, the interventional catheter can be quickly accommodated or released, and the splint, the clamp block, and the guide rod Cooperating with the compression spring, the interventional catheter can be quickly loaded and unloaded while being firmly clamped and fixed, ensuring the safety and stability of the interventional catheter during the interventional treatment process, thereby ensuring the smooth progress of the interventional treatment; through the rocker, guide block, friction wheel, The cooperation of the grooved wheel, worm wheel and worm drives the threaded rod to rotate forward and backward, making the control more flexible and convenient, and the length of the interventional catheter can be flexibly adjusted according to the needs of use, which greatly reduces the difficulty of adjustment while ensuring the comfort of the patient, and the adjustment is simpler and more efficient. It effectively reduces the workload of medical staff and greatly improves the practicability of use.

Description of drawings

Fig. 1 is a front view axonometric schematic view of the utility model.

Fig. 2 is a schematic diagram of the internal structure of the box body and the installation box of the present invention.

Fig. 3 is a schematic diagram of a cut-away structure from the right side of the utility model.

Fig. 4 is a front view cut-away structure diagram of the utility model.

Fig. 5 is a schematic diagram of a cut-away top view of the utility model.

Fig. 6 is a schematic cut-away structure diagram of the installation box of the present invention.

Fig. 7 is a schematic diagram of the cutaway structure of the lock block, the lock rod and the lock head of the present invention.

Fig. 8 is a structural schematic diagram of the initial position of the T-shaped support rod and the L-shaped fixed rod of the present invention.

Fig. 9 is a schematic diagram of the enlarged structure at A in Fig. 5 of the present utility model.

Explanation of the labels in the schematic diagram:

1. Box body; 2. T-shaped support rod; 3. L-shaped fixed rod; 4. Strip opening; 5. Installation box; 6. Fixed plate; 7. Guide rod; 8. Plywood; 9. Clamp block; , chute; 11, threaded rod; 12, worm wheel; 13, worm; 14, grooved wheel; 15, U-shaped plate; 16, rotating rod; 17, friction wheel; 18, guide block; 19, rocker; 20 , compression spring; 21, lock head; 22, lock hole; 23, lock block; 24, lock rod; 25, tension spring; 26, arc-shaped shrapnel; 27, suction cup;

Detailed ways

The specific embodiments of the present utility model will be described in further detail below in conjunction with the accompanying drawings.

For the convenience of further description, the intervention catheter is defined as a tube body 28 .

Shown in Figures 1 to 9, including the box body 1, the inner bottom wall of the box body 1 is slidingly connected with two symmetrical T-shaped struts 2, and the T-shaped ends of the T-shaped struts 2 are connected to the sides of the box body 1. The smooth contact of the inner wall ensures that the two T-shaped struts 2 can move stably relative to each other or opposite to each other synchronously in the box body 1 . The opposite sides of the two T-shaped struts 2 are fixedly connected with L-shaped fixed rods 3 uniformly distributed in the horizontal direction, and the L-shaped fixed rods 3 on the two T-shaped struts 2 are arranged in a staggered manner. The side is provided with a bar-shaped mouth 4 that runs through its left and right sides, and the L-shaped fixed rods 3 on the two T-shaped struts 2 are staggered to form a placement frame for placing the pipe body 28 (as shown in Figure 8), and the pipe body 28 passes through The strip mouth 4 enters the box body 1 and is placed on the rack. As the two T-shaped struts 2 move away from each other, the tube body 28 is stretched and wound on the L-shaped fixed rod 3 in an S-shape. The upper end of the L-shaped fixed rod 3 is cylindrical and is in smooth contact with the tube body 28 to ensure that the tube body 28 can be wound around the L-shaped fixed rod 3 quickly and stably.

The outer surface of the box body 1 is fixedly connected with a U-shaped installation frame, and the installation frame is surrounded by the box body 1 to form an installation box 5. The left and right sides of the installation box 5 are provided with openings communicating with the bar-shaped mouth 4. The installation box 5 is a U-shaped Type, through the communication between the opening and the bar-shaped mouth 4, the box body 1 and the installation box 5 are communicated, and the pipe body 28 extends out of the installation box 5 through the opening, which is convenient for the installation and disassembly of the pipe body 28. The inner side walls of the installation box 5 near the two openings are all fixedly connected with a fixed plate 6, the fixed plate 6 runs through a guide rod 7, and the front end of the guide rod 7 is provided with a driving mechanism for driving it to reciprocate along the horizontal direction, and the guide rod The rear end of 7 is fixedly connected with an L-shaped splint 8, and the inner wall of the installation box 5 corresponding to the splint 8 is fixedly connected with a clamp block 9. The outer surface of the clamp block 9 can contact the inner wall of the splint 8, and the rear end of the splint 8 can penetrate The inner side wall of the installation box 5, through the control of the driving mechanism, drives the guide rod 7 to drive the splint 8 to move, the splint 8 passes through the installation box 5 and the conduit 28 is located inside the splint 8, and at the same time cooperates with the clamp block 9 to clamp and fix the pipe body 28 in an all-round way , to ensure the fixed stability of the pipe body 28.

In order to ensure the stable and synchronous movement of the T-shaped struts 2, the inner bottom wall of the box body 1 is provided with a chute 10, and the bottom ends of the two T-shaped struts 2 are all slidably connected in the chute 10, and the front and rear side walls of the chute 10 Threaded rods 11 run through, and the two T-shaped struts 2 are screwed on the threaded rods 11 . Both ends of the threaded rod 11 are installed on the chute 10 through bearings, and the bottom ends of the two T-shaped struts 2 are provided with internal threads through inner holes, and the helical directions of the two internal threads are opposite. Through the guiding and supporting function of the chute 10, the threaded rod 11 rotates in the forward direction, driving the two T-shaped struts 2 to move away from each other, otherwise, the two T-shaped struts 2 move relatively.

In order to ensure transmission stability, the front end of the threaded rod 11 runs through the inner wall of the installation box 5, and the outer ring surface of the threaded rod 11 is keyed to a worm wheel 12, the worm wheel 12 is located in the installation box 5, and the left and right side walls of the installation box 5 run through a worm 13. The worm wheel 12 is engaged with the worm 13, and the outer ring surfaces at the left and right ends of the worm 13 are fixedly connected with grooved wheels 14. The grooved wheel 14 rotates forwardly, drives the worm wheel 12 to rotate forwardly by the worm screw 13, and then drives the threaded rod 11 to rotate forwardly, otherwise, the grooved wheel 14 reversely rotates, and the threaded rod 11 rotates reversely. Through the cooperation of the worm gear 12 and the worm 13, the stability of the transmission is ensured.

In order to facilitate manipulation, the drive mechanism includes a U-shaped plate 15 fixedly connected to the front end of the guide rod 7, the left and right side walls of the U-shaped plate 15 run through a rotating rod 16, and the outer ring surface of the rotating rod 16 is keyed with a friction wheel 17. 17 is located in the U-shaped plate 15, the friction wheel 17 can contact the inner side wall of the grooved wheel 14, the outer surface of the installation box 5 is provided with a guide port, the inner side wall of the guide port is slidably connected with a guide block 18, and one end of the rotating rod 16 is passed through. Through the guide block 18 and fixedly connected with the rocker 19, the guide block 18 is provided with a locking assembly, the outer ring surface of the guide rod 7 located between the fixed plate 6 and the splint 8 is provided with a compression spring 20, and the front end of the compression spring 20 It is fixedly connected on the fixed plate 6 , and the rear end of the compression spring 20 is fixedly connected on the splint 8 . The rotating rod 16 is installed on the U-shaped plate 15 through a bearing, and the outer surface of the friction wheel 17 can fit the inner sidewall of the groove wheel 14 .

In the initial state, the guide block 18 is located at the rear end of the guide port, and then the rocker 19 is moved forward (the rocker 19 is shaken to a horizontal position), which drives the guide block 18 to move forward along the guide port, and then the U-shaped plate 15 drives the guide The rod 7 moves forward, and the guide block 18 is fixed by the locking assembly. At the same time, the compression spring 20 is compressed, and at this time, the friction wheel 17 is attached to the inner wall of the grooved wheel 14, and then the rocker 19 is rotated clockwise Drive the rotating rod 16, under the effect of friction, the friction wheel 17 drives the grooved wheel 14 to rotate forwardly, otherwise, shake the rocking bar 19 counterclockwise, the grooved wheel 14 rotates in reverse.

When the fixed state of the guide block 18 is released by the locking assembly, under the elastic force of the compression spring 20, the guide rod 7 moves backward automatically, and the U-shaped plate 15 drives the guide block 18 to reset, and the friction wheel 17 breaks away from the grooved wheel 14 at this moment.

In order to facilitate the fixing of the guide block 18, the locking assembly includes a lock head 21 fixedly connected to the front side of the guide block 18. The upper surface of the lock head 21 is provided with a lock hole 22, and the outer surface of the installation box 5 corresponding to the guide port is fixedly connected with a lock block. 23. The lock block 23 is provided with a front and rear through lock, and the lock head 21 can be inserted into the lock. The upper surface of the lock block 23 is provided with a through hole communicating with the lock, and a lock rod 24 is slidably connected to the through hole. The outer ring surface of lock bar 24 is provided with extension spring 25, and the bottom end of extension spring 25 is fixedly connected on the upper surface of lock block 23, and the top end of extension spring 25 is fixedly connected on the lock bar 24, and the end of lock bar 24 The bottom end can pass through the lock hole 22 . The front end of the lock head 21 is an inclined surface with a low front and a high rear, and the inclined surface at the lower end of the lock bar 24 is consistent with the inclination angle of the inclined surface at the front end of the lock end 21 .

As the guide block 18 moves forward, the lock head 21 begins to enter the lock block 23 through the lock opening. At the same time, through the cooperation of the inclined surface of the front end of the lock head 21 and the inclined surface of the bottom end of the lock rod 24, the lock head 21 pushes the lock rod 24 rise, and the extension spring 25 is stretched at the same time; as the lock head 21 enters the lock block 23, the bottom end of the lock bar 24 coincides with the lock hole 22, and under the action of the elastic force of the extension spring 25, the lock bar 24 is inserted In the lock hole 22, the lock head 21 is fixed in the lock block 23, and then the guide block 18 is firmly fixed.

When the guide block 18 is fixed, the lock bar 24 is pulled upwards, and the tension spring 25 is stretched simultaneously. After the lock bar 24 is moved out of the lock hole 22, the guide block 18 is moved out, and then under the action of the tension spring 25, the lock The rod 24 resets automatically, and the manipulation is simpler and more convenient.

In order to improve the placement stability of the pipe body 28 , the front and rear side walls of the strip opening 4 are fixedly connected with arc-shaped shrapnel 26 , and the opposite surfaces of the splint 8 and the clamping block 9 are fixedly connected with damping strips. The tube body 28 is placed between the two arc-shaped shrapnel 26 through the bar-shaped opening 4, under the action of the elastic force generated by the compression of the arc-shaped shrapnel 26, the stable placement of the tube body 28 is ensured, and the tube body 28 can be placed in two arc-shaped Slide between the shrapnel 26. Through the damping strips on the clamping plate 8 and the clamping block 9, the stability of the clamping plate 8 clamping the pipe body 28 on the clamping block 9 can be further improved, ensuring that the pipe body 28 can be firmly fixed.

In order to facilitate the placement of the device, suction cups 27 are evenly provided on the lower surface of the box body 1 . The suction cups 27 are arranged in a rectangular array on the lower surface of the box body 1, and the device can be stably placed by the suction cups 27, which is conducive to improving the safety of use.

When the utility model is in use, at first, the device is placed in an appropriate position through the suction cup 27, and the rocking levers 19 on the left and right sides of the box body 1 are moved forward (the rocking lever 19 is in a horizontal position), and at the same time, the compression spring 20 is compressed , insert the lock head 21 on the guide block 18 into the lock block 23, through the cooperation of the lock head 21, the lock hole 22, the lock rod 24 and the tension spring 25, the lock head 21 is fixed on the lock block 23, and then the guide Block 18 is fixed, meanwhile, friction wheel 17 and grooved wheel 14 fit. Then the middle part of the pipe body 28 is placed in the box body 1 through the strip opening 4, and is lapped on the placement frame formed by the L-shaped fixed rods 3 interlaced and encircled by each other, and the pipe body 28 is lapped through the opening on the installation box 5 Connect to the installation box 5, and clamp the pipe body 28 between the two arc-shaped elastic pieces 26 to complete the placement of the pipe body 28.

Next, shake the rocking bar 19 on the left side or the right side of the casing 1 clockwise (you can also shake the two rocking bars 19 synchronously clockwise), and the friction wheel 17 is driven by the rotating rod 16, and the friction wheel 17 and the groove Under the action of the friction force between the wheels 14, the grooved wheel 14 drives the worm 13 to rotate in the forward direction, and through the cooperation of the worm wheel 12 and the worm 13, the threaded rod 11 is driven to rotate in the forward direction, and then the two T-shaped struts 2 move back to each other. The L-shaped fixed rods 3 on the two T-shaped struts 2 start to separate from each other and pull the tube body 28, and then the tube body 28 is stored in the box body 1 and wound on the L-shaped fixed rod 3 in an S-shape until the outer tube body 28 The remaining length is retained.

Subsequently, the locking levers 24 are pulled upwards respectively, and under the action of the elastic force of the compression spring 20, the guide block 18 moves backward along the guide opening, and at the same time drives the guide bar 7 to pass through the fixed plate 6 to reset, and then drives the splint 8 to clamp the pipe body 28 On the clamping block 9, the tube body is further firmly fixed to ensure that the tube body 28 can be firmly fixed during the interventional treatment and ensure the safety of the interventional treatment.

Then, when it is necessary to extend the length of the left end or the right end of the external pipe body 28, the rocking bar 19 on the corresponding side of the casing 1 is moved, the guide block 18 moves forward, and the lock head 21 is fixed in the lock block 23 to complete the fixing of the guide block 18 (principle As mentioned above), then shake the rocker 19 counterclockwise, the cooperation of the rotating rod 16, the friction wheel 17 and the grooved wheel 14 drives the worm 13 to reverse, and then through the cooperation of the worm wheel 12 and the worm 13, the threaded rod 11 is driven to reverse , and then the relative movement of the two T-shaped struts 2 drives the L-shaped fixed rods 3 to approach each other, and the pipe body 28 wound on the L-shaped fixed rod 3 begins to relax. Body 28 is pulled out of box body 1 appropriate length (holding pipe body 28 can be wound on the L-shaped fixed rod 3 in the pulling process).

Subsequently, the locking rod 24 is pulled, and under the action of the elastic force of the compression spring 20, the guide rod 7 drives the splint 8 to clamp the pipe body 28 on the clamping block 9 (the principle is as described above).

Correspondingly, based on the principle mentioned above, when the length of the left end or the right end of the external pipe body 28 needs to be shortened, the rocker 19 can be moved clockwise after the guide block 18 is fixed by moving the rocker 19 .

Correspondingly, when the lengths of both ends of the pipe body 28 need to be extended or shortened at the same time, the adjustment method is the same as the above adjustment method.

The utility model has the advantages of simple structure, convenient operation, novel concept and strong practicability. The T-shaped support rods 2 are driven to face each other or move relative to each other through the positive and negative rotation of the threaded rod 11. When the L-shaped fixed rods 3 are interlaced and pulled, it can be quickly accommodated or The tube body 28 is released to facilitate the access of the tube body 28. Through the cooperation of the splint 8, the clamp block 9, the guide rod 7 and the compression spring 20, the tube body 28 can be stably clamped to ensure the stability of the tube body 28 during the interventional treatment. Place it, so as to ensure the safety of interventional treatment; drive the guide block 18 forward through the rocker 19, fix the guide block 18 and make the friction wheel 17 fit the grooved wheel 14, the control is more convenient and efficient, and then shake the rocker 19, through The friction wheel 17, the grooved wheel 14, the worm wheel 12 and the worm 13 cooperate to drive the threaded rod 11 to rotate positively and negatively, and the length of the tube body 28 can be flexibly adjusted according to the use requirements, which greatly reduces the work of the medical staff while ensuring the comfort of the patient. The strength reduces the workload of medical staff, the adjustment is simpler and more convenient, the flexibility and adaptability of use are effectively improved, and the practicability is stronger.

Claims (7)

1. An interventional catheter fixing device, comprising a box body (1), characterized in that, the inner bottom wall of the box body (1) is slidably connected with two T-shaped struts (2) front and rear symmetrical, and two T-shaped struts (2). The opposite sides of the T-shaped struts (2) are fixedly connected with L-shaped fixed rods (3) uniformly distributed along the horizontal direction, and the L-shaped fixed rods (3) on the two T-shaped struts (2) are arranged in a staggered manner. The upper side of the box (1) is provided with a strip opening (4) that runs through the left and right sides of the box (1), and a U-shaped installation frame is fixedly connected to the outer surface of the box (1), and the installation frame and the box (1) are enclosed to form an installation box (5), the left and right sides of the installation box (5) are all provided with openings communicating with the strip mouth (4), and the inner side walls of the installation box (5) near the two openings are fixedly connected with a fixing plate (6). A guide rod (7) runs through the plate (6), the front end of the guide rod (7) is provided with a drive mechanism for driving it to reciprocate in the horizontal direction, and the rear end of the guide rod (7) is fixedly connected with an L-shaped splint (8), the installation box (5) is fixedly connected with the clamping block (9) on the inner side wall of the corresponding splint (8), the outer surface of the clamping block (9) can contact the inner side wall of the splint (8), and the rear of the splint (8) The end can penetrate the inner side wall of the installation box (5). 2. An interventional catheter fixing device according to claim 1, characterized in that, the inner bottom wall of the box (1) is provided with a chute (10), and the bottoms of the two T-shaped struts (2) The ends are all slidably connected in the chute (10), the front and rear side walls of the chute (10) run through threaded rods (11), and the two T-shaped poles (2) are all threaded on the threaded rods (11). 3. An interventional catheter fixing device according to claim 2, characterized in that, the front end of the threaded rod (11) runs through the inner side wall of the installation box (5), and the outer ring surface of the threaded rod (11) is keyed Worm wheel (12) is arranged, and worm wheel (12) is positioned at installation box (5), and the left and right sidewalls of installation box (5) is penetrated with worm screw (13), and worm wheel (12) is meshing connection with worm screw (13), and worm screw (13 ) The outer ring surfaces at the left and right ends are all fixedly connected with grooved wheels (14). 4. A kind of interventional catheter fixing device according to claim 3, characterized in that, the drive mechanism includes a U-shaped plate (15) fixedly connected to the front end of the guide rod (7), and the left and right sides of the U-shaped plate (15) The side wall runs through a rotating rod (16), and the outer ring surface of the rotating rod (16) is connected with a friction wheel (17). The friction wheel (17) is located in the U-shaped plate (15), and the friction wheel (17) can contact the concave The inner side wall of the sheave (14), the outer surface of the mounting box (5) is provided with a guide opening, the inner side wall of the guide opening is slidingly connected with a guide block (18), and one end of the turning rod (16) passes through the guide block (18) And it is fixedly connected with a rocking bar (19), the guide block (18) is provided with a locking assembly, and the outer ring surface of the guide bar (7) between the fixed plate (6) and the splint (8) is provided with a compression spring ( 20), the front end of the compression spring (20) is fixedly connected on the fixed plate (6), and the rear end of the compression spring (20) is fixedly connected on the splint (8). 5. An interventional catheter fixing device according to claim 4, characterized in that, the locking assembly includes a locking head (21) fixedly connected to the front side of the guide block (18), and the locking head (21) The surface is provided with a lock hole (22), and the outer surface of the installation box (5) corresponding to the guide port is fixedly connected with a lock block (23). Connected in the lock, the upper surface of the lock block (23) is provided with a through hole communicating with the lock, and a lock bar (24) is slidably connected in the through hole, and the outer ring surface of the lock bar (24) is provided with a tension spring (25), the bottom of the tension spring (25) is fixedly connected to the upper surface of the lock block (23), and the top of the tension spring (25) is fixedly connected to the lock bar (24), and the bottom of the lock bar (24) The end can pass through the lock hole (22). 6. A kind of interventional catheter fixing device according to claim 1, characterized in that, the front and rear side walls of the strip opening (4) are fixedly connected with arc-shaped shrapnel (26), and the clamping plate (8) and the clamping block ( 9) The opposite surfaces are all fixedly connected with damping strips. 7. An interventional catheter fixing device according to any one of claims 1-6, characterized in that suction cups (27) are evenly provided on the lower surface of the box (1).

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