Novel improved catheter

Abstract

A novel improved catheter comprises a catheter body, and a plurality of telescopic frameworks are arranged on the outer wall of the top end of the catheter body in a circumferential array mode. The catheter is made of flexible materials such as medical silica gel, and has good biocompatibility and flexibility. The telescopic framework is arranged at the front end of the catheter, is made of a memory alloy material, has a shape memory function, can change the shape under the action of the pull tube, and recovers the original shape after the acting force of the pull tube is removed. When the urethral catheter is used, the urethral catheter is inserted into the bladder through the urethra, the telescopic framework is in a contracted state in the inserting process, the urethral catheter is more easily inserted and is more attached to the urethra wall, stimulation and damage to the urethra are reduced, after the urethral catheter is inserted in place, the telescopic framework is opened through the pull tube, the telescopic framework can lower the position of a urine inlet of the urethral catheter, and meanwhile the urethral catheter is more convenient to use. The filtering function of the telescopic framework can effectively intercept impurities such as blood clots in urine, the impurities are prevented from entering the catheter, and the smoothness of the catheterization process is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a newly improved urinary catheter. Background Art

[0002] Clinically, when catheterizing a surgical patient or when an indwelling urinary catheter is required, generally a rubber urinary catheter is first inserted into the urethra and bladder, and then liquid (such as sterile water) is injected through the water sac injection hole at the rear end. The bladder neck is fixed by the expansion of the liquid sac. This method is widely used in clinical practice.

[0003] Currently, in actual clinical work, patients can pull out the urinary catheter. Since a water injection valve is connected to the water sac of the urinary catheter, medical staff need to use a syringe to draw out the liquid in the water sac of the urinary catheter so that the urinary catheter can be withdrawn from the user's bladder and urethra. On the one hand, it is cumbersome and time-consuming for medical staff to draw out the liquid in the water sac of the urinary catheter with a syringe; on the other hand, if too little liquid is drawn out from the water sac of the urinary catheter, the water sac will be blocked in the bladder and it is difficult to remove the urinary catheter. If too much liquid is drawn out from the water sac of the urinary catheter, the water sac may become deflated and dry, which may easily cause the bladder to adhere to the water sac wall, and the bladder may be stimulated when the urinary catheter is removed, which may cause certain damage to the bladder. Content of the Utility Model

[0004] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a newly improved urinary catheter, which effectively solves the problems that it is cumbersome and time-consuming for medical staff to draw out the liquid in the water sac of the urinary catheter with a syringe; on the other hand, if too little liquid is drawn out from the water sac of the urinary catheter, the water sac will be blocked in the bladder and it is difficult to remove the urinary catheter. If too much liquid is drawn out from the water sac of the urinary catheter, the water sac may become deflated and dry, which may easily cause the bladder to adhere to the water sac wall, and the bladder may be stimulated when the urinary catheter is removed, which may cause certain damage to the bladder.

[0005] The technical solution it adopts is that a newly improved urinary catheter includes a urinary catheter body;

[0006] A plurality of telescopic skeletons are circumferentially and arrayedly arranged on the outer wall of the top end of the urinary catheter body. A pull tube is arranged inside the urinary catheter body, and the top end of the pull tube is connected to the plurality of telescopic skeletons through a cable member;

[0007] A buckle adjustment mechanism matching with the pull tube is installed in the pipe orifice of the urinary catheter body, and the buckle adjustment mechanism is used for stretching the pull tube.

[0008] Preferably, the top and bottom of the plurality of telescopic skeletons are connected through fixing rings, and both of the two fixing rings are fixedly sleeved on the outer wall of the urinary catheter body.

[0009] Preferably, one side of the pull cable is mounted on the outer wall of the top end of the pull tube, a plurality of slots are provided in a circumferential array at the top end of the catheter body, the pull cable is engaged in the plurality of slots, and the side of the pull cable facing away from the pull tube is arranged on the inner wall of one of the fixing rings.

[0010] Preferably, a water injection pipe is provided on one side of the catheter body, the catheter body is connected to the water injection pipe, and the buckle adjustment mechanism is provided at the open end of the water injection pipe.

[0011] Preferably, the buckle adjustment mechanism includes a positioning ring, which is arranged inside the water injection pipe, and a rotating ring is rotatably arranged on one side of the positioning ring, and a threaded sleeve is sleeved on the outer wall of one end of the pull tube, and the rotating ring is threadedly connected to the threaded sleeve, and limiting grooves are provided on both sides of the threaded sleeve, and limiting blocks are provided on both sides of the inner wall of the positioning ring, and the two limiting blocks are slidably installed in the limiting grooves.

[0012] Preferably, a pipeline hole is opened at the top of the catheter body, and the top end of the pull tube is penetrated and arranged in the pipeline hole.

[0013] Preferably, a urine inlet is provided on one side of the catheter body.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The catheter body is made of flexible materials such as medical silicone, and has good biocompatibility and flexibility. The telescopic skeleton is arranged at the front end of the catheter body, and is made of memory alloy material. It has shape memory function, can change shape under the action of pulling the tube, and return to its original state after the pulling force is removed. When in use, the catheter body is inserted into the bladder through the urethra, and the telescopic skeleton is in a contracted state during the insertion process, making the catheter body easier to insert and more in line with the urethral wall, reducing the stimulation and damage to the urethra; after the catheter body is inserted into place, the telescopic skeleton is opened by pulling the tube, and the telescopic skeleton can lower the position of the catheter body urine inlet. At the same time, the filtering effect of the telescopic skeleton can effectively intercept impurities such as blood clots in urine, prevent them from entering the interior of the catheter body, and ensure the smoothness of the catheterization process. The new catheter body is reasonably designed, simple in structure, and easy to operate. It is suitable for all kinds of patients who need catheterization, especially those in complex conditions such as urethral stenosis and easy bleeding. The design of its retractable frame not only improves the applicability and comfort of the catheter body, but also reduces complications during catheterization through filtering action, thus improving the quality of life of patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a first-view structural schematic diagram of the novel improved urinary catheter of the utility model.

[0017] Figure 2 is a schematic cross-sectional structure diagram of the present utility model Figure 1 .

[0018] Figure 3 is a schematic diagram of the enlarged part A in the present utility model Figure 2 .

[0019] Figure 4 is a schematic structure diagram of the catheter body of the present utility model

[0020] Figure 5 is a schematic diagram of the enlarged part B in the present utility model Figure 4 .

[0021] Figure 6 is a schematic structure diagram of the telescopic skeleton and the pull tube of the present utility model

[0022] Figure 7 is a schematic diagram of the enlarged part C in the present utility model Figure 6 .

[0023] Figure 8 is a schematic diagram of the enlarged part D in the present utility model Figure 6 .

[0024] Figure 9 is an exploded structure diagram of the buckle adjustment mechanism of the present utility model

[0025] Description of the reference numerals in the schematic diagram:

[0026] 1. Catheter body; 2. Telescopic skeleton; 3. Pull tube; 4. Fixed ring; 5. Card slot; 6. Water injection tube; 7. Positioning ring; 8. Rotating ring; 9. Threaded sleeve; 10. Pipe hole; 11. Urine inlet; 12. Cable member; 13. Limit sliding groove; 14. Limit block Specific implementation manners

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model

[0028] As given by Figures 1 to 3 , a novel improved catheter includes a catheter body 1, a telescopic skeleton 2, a pull tube 3 and a buckle adjustment mechanism

[0029] Specifically, the catheter body 1 is made of a flexible material such as medical silicone, and has good biocompatibility and flexibility

[0030] Among them, a plurality of telescopic frameworks 2 are provided. The plurality of telescopic frameworks 2 are distributed in a circumferential array and have an elliptical structure. The tops and bottoms of the plurality of telescopic frameworks 2 are both connected in cooperation through fixing rings 4. Specifically, the fixing rings 4 fix the plurality of telescopic frameworks 2, enabling the plurality of telescopic frameworks 2 to contract or expand simultaneously.

[0031] Specifically, the plurality of telescopic frameworks 2 are made of shape memory alloy materials and have the shape memory function.

[0032] From Figure 4 、 Figure 5 and Figure 7 shown, a water injection pipe 6 is provided on one side of the urinary catheter body 1, and the urinary catheter body 1 is communicated with the water injection pipe 6; the front end of the pull pipe 3 is located at the front end inside the urinary catheter body 1, the rear end of the pull pipe 3 is located inside the water injection pipe 6, and the pull pipe 3 is connected to the fixing ring 4 through a cable member 12. Specifically, one side of the cable member 12 is circumferentially arrayed on the outer wall of the pull pipe 3, and a plurality of card slots 5 are circumferentially arrayed at the top end of the urinary catheter body 1. The cable member 12 is clamped in the plurality of card slots 5, and the side of the cable member 12 facing away from the pull pipe 3 is arranged on the inner wall of one of the fixing rings 4. Briefly described, the pull pipe 3 can move, the pull pipe 3 drives the cable member 12 to pull the fixing ring 4 arranged at the top, and the fixing ring 4 arranged at the top drives the top of the plurality of telescopic frameworks 2 to move, and further the plurality of telescopic frameworks 2 expand or contract.

[0033] More preferably, a buckle adjusting mechanism is arranged at the opening end of the water injection pipe 6. The buckle adjusting mechanism includes a positioning ring 7, two limiting blocks 14, a rotating ring 8, a threaded sleeve 9 and two limiting chutes 13.

[0034] From Figure 6 and Figure 8 shown, the positioning ring 7 is fixedly arranged inside the opening end of the water injection pipe 6, the rotating ring 8 is rotatably arranged on one side of the positioning ring 7, the rotating ring 8 is located at the opening of the water injection pipe 6, the threaded sleeve 9 is sleeved and installed at the front end of the pull pipe 3, and the threaded sleeve 9 is installed through the positioning ring 7, and the threaded sleeve 9 is threadedly connected to the rotating ring 8. Specifically, the positioning ring 7 is fixed in the water injection pipe 6, the rotating ring 8 can rotate on the positioning ring 7, and medical staff twist the rotating ring 8, the rotating ring 8 drives the threaded sleeve 9 to move, and the threaded sleeve 9 drives the pull pipe 3 to move.

[0035] From Figure 8 and Figure 9Given that the limiting blocks 14 are arranged on both sides of the inner wall of the positioning ring 7, and two limiting chutes 13 are opened on both sides of the outer wall of the threaded sleeve 9. The two limiting blocks 14 are respectively slidably installed in the two limiting chutes 13. Specifically, the positioning ring 7 is fixed, and the two limiting blocks 14 limit the threaded sleeve 9 to prevent the threaded sleeve 9 from rotating when the rotating ring 8 rotates, so as to avoid the rotation of the threaded sleeve 9 and its inability to move back and forth.

[0036] Specifically, during use, the catheter body 1 is inserted into the bladder through the urethra, and the multiple telescopic skeletons 2 are in a contracted state during the insertion process; after the catheter body 1 is inserted in place, the medical staff twists the rotating ring 8, and the rotating ring 8 drives the threaded sleeve 9 to move towards the open end of the water injection pipe 6. The threaded sleeve 9 drives the pull pipe 3 to move, and the telescopic skeletons 2 are pulled through the pull pipe 3 to make the telescopic skeletons 2 expand.

[0037] When pulling out the catheter body 1, the medical staff twists the rotating ring 8 in the reverse direction. The rotating ring 8 drives the threaded sleeve 9 to move deeper into the open end. The threaded sleeve 9 releases the pull pipe 3, and the pull pipe 3 returns to its original position. The multiple telescopic skeletons 2 contract, and then the medical staff can withdraw the catheter body 1.

[0038] Given by Figures 4 to 5 Given that, preferably, a pipe hole 10 is opened at the top of the catheter body 1, and the pull pipe 3 is arranged through the pipe hole 10. Preferably, the top end of the pull pipe 3 extends out of the pipe hole 10, which is convenient for the medical staff to inject medicine into the patient through the pull pipe 3 during subsequent treatment.

[0039] Given by Figures 4 to 5 Given that, more preferably, a urine inlet 11 is opened on one side of the catheter body 1, and urine enters the catheter body 1 from the urine inlet 11 and is discharged. At the same time, the urine inlet 11 is located inside the multiple telescopic skeletons 2, and the filtering function of the skeletons can effectively intercept impurities such as blood clots in the urine and prevent them from entering the inside of the catheter body 1, ensuring the smoothness of the catheterization process.

[0040] The beneficial effects obtained from the catheter body 1, the telescopic skeleton 2, the pull pipe 3, the buckle adjustment mechanism, and the urine inlet 11: The catheter body 1 is made of a flexible material such as medical silicone, which has good biocompatibility and flexibility. The telescopic skeleton 2 is arranged at the front end of the catheter body 1 and is made of a shape memory alloy material, which has a shape memory function. It can change its shape under the action of the pull pipe 3 and return to its original state after the force of the pull pipe 3 is removed.

[0041] During use, the catheter body 1 is inserted into the bladder through the urethra, and the telescopic skeletons 2 are in a contracted state during the insertion process, making the catheter body 1 easier to insert and more conformable to the urethral wall, reducing the irritation and damage to the urethra; after the catheter body 1 is inserted in place, the telescopic skeletons 2 are expanded through the pull pipe 3, and the telescopic skeletons 2 can lower the position of the urine inlet of the catheter body 1.

[0042] Meanwhile, the filtering function of the telescopic framework 2 can effectively intercept impurities such as blood clots in urine, preventing them from entering the inside of the catheter body 1 and ensuring the smoothness of the catheterization process. The novel catheter body 1 of the present invention is reasonably designed, simple in structure and convenient to operate, and is applicable to various patients in need of catheterization, especially patients in complex situations such as urethral stricture and easy bleeding. The design of its telescopic framework 2 not only improves the applicability and comfort of the catheter body 1, but also reduces the complications during the catheterization process through the filtering function, improving the quality of life of patients.

[0043] When the utility model is in use, the catheter body 1 is inserted into the bladder through the urethra, and the plurality of telescopic frameworks 2 are in a contracted state during the insertion process; after the catheter is inserted in place, the medical staff twists the rotating ring 8, and the rotating ring 8 drives the threaded sleeve 9 to move towards the open end of the water injection pipe 6. The threaded sleeve 9 drives the pull pipe 3 to move, and the telescopic framework 2 is pulled through the pull pipe 3 to make the telescopic framework 2 expand.

[0044] When the catheter body 1 is removed, the medical staff twists the rotating ring 8 in the reverse direction. The rotating ring 8 drives the threaded sleeve 9 to move deeper into the open end. The threaded sleeve 9 releases the pull pipe 3, and the pull pipe 3 returns to its original position. The plurality of telescopic frameworks 2 contract, and then the medical staff can withdraw the catheter body 1.

[0045] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new and improved urinary catheter, characterized in that: It comprises a urinary catheter body (1); A plurality of telescopic frames (2) are arranged in a circular array on the outer wall of the top end of the catheter body (1); a pull tube (3) is arranged inside the catheter body (1); and the top end of the pull tube (3) is connected to the plurality of telescopic frames (2) via a pull cable (12); A buckle adjustment mechanism matched with the pull tube (3) is installed in the tube opening of the urinary catheter body (1), and the buckle adjustment mechanism is used to stretch the pull tube (3).

2. A novel and improved urinary catheter according to claim 1, characterized in that: The tops and bottoms of the plurality of telescopic frames (2) are connected via a fixing ring (4), and the two fixing rings (4) are fixedly sleeved and mounted on the outer wall of the urinary catheter body (1).

3. A novel and improved urinary catheter according to claim 2, characterized in that: One side of the pull cable (12) is mounted on the outer wall of the top end of the pull tube (3); a plurality of slots (5) are arranged in a circumferential array at the top end of the catheter body (1); the pull cable (12) is snapped into the plurality of slots (5); and a side of the pull cable (12) facing away from the pull tube (3) is arranged on the inner wall of one of the fixing rings (4).

4. A novel and improved urinary catheter according to claim 3, characterized in that: A water injection pipe (6) is provided on one side of the catheter body (1), the catheter body (1) is connected to the water injection pipe (6), and the buckle adjustment mechanism is provided at the open end of the water injection pipe (6).

5. A novel and improved urinary catheter according to claim 4, characterized in that: The buckle adjustment mechanism comprises a positioning ring (7), the positioning ring (7) is arranged inside the water injection pipe (6), a rotating ring (8) is rotatably arranged on one side of the positioning ring (7), a threaded sleeve (9) is sleeved on the outer wall of one end of the pull tube (3), the rotating ring (8) is threadedly connected to the threaded sleeve (9), both sides of the threaded sleeve (9) are provided with limiting grooves (13), both sides of the inner wall of the positioning ring (7) are provided with limiting blocks (14), and the two limiting blocks (14) are slidably installed in the limiting grooves (13).

6. A novel and improved urinary catheter according to claim 5, characterized in that: A pipeline hole (10) is provided at the top of the catheter body (1), and the top end of the pull tube (3) is arranged to penetrate the pipeline hole (10).

7. A novel and improved urinary catheter according to claim 6, characterized in that: A urine inlet (11) is provided on one side of the urinary catheter body (1).

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