CN211584839U - A new type of urinary catheter that prevents blood clots - Google Patents

Abstract

The utility model provides a new type of catheter for preventing blood clot from being blocked, which comprises a pipe body with a catheterization cavity, the distal end of the pipe body is provided with a catheterization hole and a balloon, and the proximal end is provided with a catheterization joint and Balloon joint; a retractable filter screen is provided at the position of the inner wall of the catheterization cavity close to the catheterization hole, one side of the filter screen is fixedly arranged on the inner wall of the catheterization cavity, and the other side is fixed on the inner wall of the catheterization cavity. The side edge is connected with a guide wire arranged in the tube body, and the filter screen is unfolded under the action of the guide wire and is covered at the catheterization hole. The new catheter for preventing blood clot blockage can effectively intercept blood clots during the process of catheterization, prevent blood clots from entering the catheterization lumen and cause blockage, and overcome the current urinary catheter blockage that often occurs in clinical urology; and its structure The design is novel, easy to use, suitable for promotion and implementation, and has good clinical application value.

Description

A new type of urinary catheter that prevents blood clots from clogging

technical field

The utility model relates to the field of medical devices, in particular to a novel urinary catheter for preventing blood clots from being blocked.

Background technique

Medical catheter is one of the most commonly used medical equipment in modern medical practice. It is a pipeline made of natural rubber, silicone rubber or polyvinyl chloride (PVC), which can be inserted into the bladder through the urethra to drain urine out. After the urinary catheter is inserted into the bladder, there is a balloon near the head end of the urinary catheter to fix the urinary catheter to stay in the bladder, and it is not easy to come out, and the drainage tube is connected to the urine bag to collect urine. There is a catheter hole at the front end of the catheter, which is often used in patients during surgery to avoid damage to the bladder caused by excessive storage of urine.

When a patient uses a catheter for catheterization, hematuria is often blocked inside the catheter, causing the urine to be unable to be discharged continuously. The existing method is to use a syringe to extract, but due to the large volume of blood clots, the effect of the syringe to extract is not good. Ideally, the catheter needs to be reinserted to increase pain for the patient, which not only increases the workload of the doctor, but also takes up more of the doctor's time and delays the treatment of other patients; In addition, if the catheter hole is blocked, the catheter will be scrapped, the medical cost will be increased, and unnecessary waste will be caused.

Utility model content

The technical problem to be solved by the utility model is: aiming at the above-mentioned defects in the prior art, a novel urinary catheter is provided which is convenient to operate and can effectively prevent the blockage of blood clots.

The utility model adopts the following technical solutions for solving the above-mentioned technical problems:

The utility model provides a new type of urinary catheter for preventing blood clot blockage, which comprises a pipe body with a urinary catheter cavity, the distal end of the pipe body is provided with a urinary catheter hole and a balloon, and the proximal end is provided with a urinary catheter joint and a balloon bladder joint; a retractable filter screen is provided at the position of the inner wall of the catheterization cavity near the catheterization hole, one side of the filter screen is fixedly arranged on the inner wall of the catheterization cavity, and the other side is fixed on the inner wall of the catheterization cavity. The edge is connected with a guide wire arranged in the tube body, and the filter screen is unfolded under the action of the guide wire and covered at the catheterization hole.

Further, on the described novel urinary catheter for preventing blood clots from being blocked, the filter screen is arranged on the proximal end side of the urinary catheter hole, and the proximal side is fixedly arranged on the inner wall of the urinary catheter tract, The distal edge is connected with the distal end of the guide wire, and the filter screen is unfolded under the push of the guide wire and covered at the catheterization hole.

Further, on the described novel catheter for preventing blood clot from being blocked, the filter screen is arranged on the distal side of the catheter hole, and its distal side is fixedly arranged on the inner wall of the catheterization cavity, The proximal side is connected with the distal end of the guide wire, and the filter mesh is unfolded and covered at the catheterization hole when the guide wire is pulled.

Further preferably, on the described novel catheter for preventing blood clots from being blocked, the upper and lower ends of the filter screen are respectively fixed to the pipe walls at the top and bottom of the catheter hole by first pins, and the filter screen is The proximal side or the distal side of the catheter is fixed on the tube wall on the proximal side or the distal side of the catheter hole through a plurality of second pins.

Further preferably, on the new type of urinary catheter for preventing blood clot blockage, the filter screen is made of elastic memory alloy material, which is in a crescent-shaped contraction state under the action of external force, and is in a circular shape under the action of external force. The expanded state of a shape or ellipse.

Further preferably, on the new type of urinary catheter for preventing blood clot blockage, the side wall of the tube body is provided with a balloon lumen along its length direction, one end of the balloon lumen is connected to the balloon, and the other end is connected to the balloon. One end communicates with the balloon joint.

Further preferably, on the new catheter for preventing blood clot blockage, the side wall of the tube body is provided with a guide wire lumen along its length direction, and one end of the guide wire lumen is connected to the catheter hole and the catheter. The other end of the catheterization lumen between the balloons communicates with the guide wire joint disposed at the proximal end of the tube body.

Further, on the described novel catheter for preventing blood clot blockage, the position of the inner wall of the catheterization cavity close to the catheter hole is also provided with an arc-shaped limit block, and the arc-shaped limit block and The filter meshes in the contracted state are respectively located on both sides of the catheterization hole.

Further, on the new type of catheter for preventing blood clot from being blocked, there are two catheter holes, which are respectively symmetrically arranged at the distal position of the pipe body.

Further, on the new type of urinary catheter for preventing blood clot from being blocked, the tube body is made of rubber, latex or silicone.

The utility model adopts the above technical solutions, compared with the prior art, has the following technical effects:

In the novel urinary catheter for preventing blood clot blockage of the utility model, a retractable filter screen is arranged on the inner side wall of the catheterization hole at the distal end of the tube body, and the filter screen can effectively intercept the blood clot during the catheterization process and prevent the blood clot from entering. The catheterization tract is blocked, and the blood clot intercepted on the filter can be reciprocated by pushing and pulling the guide wire, and the blood clot can be crushed by the reciprocating contraction of the filter. At present, the phenomenon of urinary catheter blockage that often occurs in urological clinics reduces the pain of patients when indwelling urinary catheters and reduces the occurrence of complications of indwelling urinary catheters; It is suitable for promotion and implementation, and has good clinical application value.

Description of drawings

1 is a schematic diagram of the overall structure of a novel urinary catheter for preventing blood clot blockage of the present utility model;

2 is a cross-sectional structural schematic diagram of a filter screen in a new type of urinary catheter for preventing blood clot blockage in a contracted state;

3 is a schematic cross-sectional structural diagram of a filter screen in a new type of urinary catheter for preventing blood clot blockage in an unfolded state of the present invention;

4 is a schematic diagram of a partially enlarged structure of a filter screen in a contracted state when a new type of urinary catheter for preventing blood clot blockage of the present invention is in a push-to-deploy mode;

5 is a partially enlarged structural schematic diagram of the filter screen in the unfolded state when a new type of urinary catheter for preventing blood clot blockage of the present invention is in a pushing and unfolding mode;

Figure 6 is a schematic diagram of a partially enlarged structure of the filter mesh in a contracted state when a new type of urinary catheter for preventing blood clot blockage of the present invention is in a pulling and unfolding mode;

7 is a schematic diagram of a partially enlarged structure of the filter screen in the unfolded state when a new type of urinary catheter for preventing blood clot blockage of the present invention is in a pulling and unfolding mode;

Among them, each reference sign is:

10-tube body, 11-catheter hole, 12-balloon, 13-catheterization joint, 14-guide wire joint, 15-balloon joint, 16-catheterization lumen, 17-balloon lumen, 18- Guide wire lumen, 19-arc limit block; 20-filter, 21-first pin, 22-second pin; 30-guide wire, 31-connecting block.

Detailed ways

Typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present utility model can have various changes in different embodiments without departing from the scope of the present utility model, and the descriptions and illustrations therein are essentially for the purpose of illustration rather than use to limit the utility model.

The present utility model is described in detail and concretely below through specific embodiments, so as to make the present invention better understood, but the following embodiments do not limit the scope of the present utility model. In addition, when describing the orientation of the present invention, the direction close to the operator during the operation is "near", and the direction away from the operator is "far".

Example 1

Referring to FIGS. 1-3 , this embodiment provides a new type of urinary catheter for preventing blood clots, including a tube body 10 having a urinary catheter tract 16 . The tube body 10 is made of rubber, latex or silicone, so The distal end of the tube body 10 is provided with a catheterization hole 11 and a balloon 12, and the proximal end is provided with a catheterization joint 13 and a balloon joint 15; A retractable filter screen 20 is provided, one side of the filter screen 20 is fixedly arranged on the inner wall of the catheterization lumen 16, and the other side is connected to the guide provided in the tube body 10 through the connecting block 31. The wire 30 is connected, and the filter screen 20 is unfolded under the action of the guide wire 30 and covered at the catheter hole 11 .

Please refer to FIGS. 4-5 , the filter screen 20 is arranged on the proximal side of the catheterization hole 11 , the proximal side is fixedly arranged on the inner wall of the catheterization cavity 16 , and the distal side is connected to the inner wall of the catheterization cavity 16 . The distal end of the guide wire 30 is connected, and the filter screen 20 is unfolded under the pushing of the guide wire 30 and covered at the catheter hole 11 . The new type of catheter for preventing blood clot from clogging is provided with a retractable filter screen 20 on the inner wall of the catheter hole 11 at the distal end of the tube body 10, and by pushing the filter screen 20 to the distal end to cover the catheter hole 11, it can be It can effectively intercept the blood clot during the catheterization process to prevent the blood clot from entering the catheterization cavity and cause blockage, and the blood clot intercepted on the filter can be reciprocated by pushing and pulling the guide wire, and the reciprocating contraction of the filter can be used to pulverize the blood clot to a certain extent. The blood clot can be drained out with the urine through the filter.

In this embodiment, please refer to FIGS. 4-5 , the upper and lower ends of the filter screen 20 are respectively fixed to the pipe walls at the top and bottom of the catheterization hole 11 through first pins 21 , and the filter screen The proximal side or the distal side of 20 is fixed on the tube wall on the proximal side or the distal side of the catheter hole 11 through a plurality of second pins 22 .

In this embodiment, the filter screen is made of 20-position elastic memory alloy material, such as stainless steel or nickel-titanium alloy. As shown in FIGS. 4-5 , the filter screen 20 is in a crescent-shaped contracted state under the action of external force, and is in a circular or elliptical expanded state under the action of an external force.

In this embodiment, please refer to FIGS. 2-3 , the side wall of the tube body 10 is provided with a balloon lumen 17 along its length direction, and one end of the balloon lumen 17 is connected to the balloon 12 , The other end is connected to the balloon joint 15; the side wall of the tube body 10 is provided with a guide wire lumen 18 along its length direction, and one end of the guide wire lumen 18 is connected to the catheter hole 11 and the balloon 12. The catheter lumen 16 between the two ends communicates with the guide wire connector 14 disposed at the proximal end of the tube body 10 .

In this embodiment, please refer to FIGS. 4-5 , an arc-shaped limit block 19 is further provided at the position of the inner wall of the catheterization cavity 16 close to the catheterization hole 11 . The arc-shaped limit block 19 and the filter screen 20 in the contracted state are respectively located on both sides of the catheterization hole 11 .

In this embodiment, there are two catheter holes 11, which are symmetrically arranged at the distal positions of the tube body 10, respectively, and filters 20 are respectively provided at the corresponding two catheter holes 11. The two filter meshes 20 are respectively connected to guide wires 30 . In order to keep the two filter meshes 20 extending and retracting synchronously, the guide wires 30 adopt a Y-shaped structure. The structural design of the two catheter holes 11 is conducive to the quick discharge of urine and saves time.

Example 2

Referring to FIGS. 1-3 , this embodiment provides a new type of urinary catheter for preventing blood clots, including a tube body 10 having a urinary catheter tract 16 . The tube body 10 is made of rubber, latex or silicone, so The distal end of the tube body 10 is provided with a catheterization hole 11 and a balloon 12, and the proximal end is provided with a catheterization joint 13 and a balloon joint 15; A retractable filter screen 20 is provided, one side of the filter screen 20 is fixedly arranged on the inner wall of the catheterization lumen 16, and the other side is connected to the guide provided in the tube body 10 through the connecting block 31. The wire 30 is connected, and the filter screen 20 is unfolded under the action of the guide wire 30 and covered at the catheter hole 11 .

Please refer to FIGS. 6-7 , the filter screen 20 is arranged on the distal side of the catheterization hole 11 , the distal side is fixedly arranged on the inner wall of the catheterization cavity 16 , and the proximal side is connected to the inner wall of the catheterization cavity 16 . The distal end of the guide wire 30 is connected, and the filter screen 20 is unfolded under the pulling of the guide wire 30 and covered at the catheter hole 11 . The novel urinary catheter for preventing blood clot blockage is provided with a retractable filter mesh 20 on the inner side wall of the catheterization hole 11 at the distal end of the tube body 10. During the urine process, the blood clot is intercepted to prevent the blood clot from entering the catheterization lumen and causing blockage, and the blood clot intercepted on the filter can be reciprocated by pushing and pulling the guide wire, and the reciprocating contraction of the filter can be used to pulverize the blood clot to a certain extent. It is discharged with the urine through this filter.

In this embodiment, please refer to FIGS. 6-7 , the upper and lower ends of the filter screen 20 are respectively fixed to the pipe walls at the top and bottom of the catheterization hole 11 by first pins 21 , and the filter screen The proximal side or the distal side of 20 is fixed on the tube wall on the proximal side or the distal side of the catheter hole 11 through a plurality of second pins 22 .

In this embodiment, the filter screen is made of 20-position elastic memory alloy material, such as stainless steel or nickel-titanium alloy. As shown in Figs. 6-7, the filter screen 20 is in a crescent-shaped contracted state under the action of external force, and is in a circular or elliptical expanded state under the action of an external force.

In this embodiment, please refer to FIGS. 2-3 , the side wall of the tube body 10 is provided with a balloon lumen 17 along its length direction, and one end of the balloon lumen 17 is connected to the balloon 12 , The other end is connected to the balloon joint 15; the side wall of the tube body 10 is provided with a guide wire lumen 18 along its length direction, and one end of the guide wire lumen 18 is connected to the catheter hole 11 and the balloon 12. The catheter lumen 16 between the two ends communicates with the guide wire connector 14 disposed at the proximal end of the tube body 10 .

In this embodiment, please refer to FIGS. 6-7 , an arc-shaped limit block 19 is further provided on the inner side wall of the urinary catheter 16 near the urinary catheter hole 11 . The arc-shaped limit block 19 and the filter screen 20 in the contracted state are respectively located on both sides of the catheterization hole 11 .

In this embodiment, there are two catheter holes 11, which are symmetrically arranged at the distal positions of the tube body 10, respectively, and filters 20 are respectively provided at the corresponding two catheter holes 11. The two filter meshes 20 are respectively connected to guide wires 30 . In order to keep the two filter meshes 20 extending and retracting synchronously, the guide wires 30 adopt a Y-shaped structure. The structural design of the two catheter holes 11 is conducive to the quick discharge of urine and saves time.

In the novel urinary catheter for preventing blood clot blockage of the present invention, a retractable filter screen 20 is arranged on the inner wall of the catheter hole 11 at the distal end of the tube body 10, and the filter screen 20 can effectively intercept blood clots during the process of urinary catheterization. It can prevent blood clots from entering the catheter cavity 16 and cause blockage, overcome the current urinary catheter blockage that often occurs in urology clinics, reduce the pain of patients when indwelling catheters, and reduce the occurrence of indwelling catheter complications; In addition, the novel urinary catheter has novel structural design and convenient use, is suitable for popularization and implementation, and has good clinical popularization and application value.

The specific embodiments of the present invention have been described in detail above, but they are only used as examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions made to this utility are also within the scope of the present utility model. Therefore, all equivalent changes and modifications made without departing from the spirit and scope of the present invention should be included within the scope of the present invention.

Claims (10)

1. A novel urinary catheter for preventing blood clot from being blocked, comprising a tube body (10) with a urinary catheter (16), the distal end of the tube body (10) is provided with a urinary catheter hole (11) and a balloon (12), the proximal end is provided with a catheter joint (13) and a balloon joint (15); it is characterized in that, the position of the inner wall of the catheterization cavity (16) close to the catheterization hole (11) is provided with A retractable filter screen (20), one side of the filter screen (20) is arranged on the inner wall of the urinary catheterization lumen (16), and the other side is connected with the filter arranged in the pipe body (10). A guide wire (30) is connected, and the filter screen (20) is unfolded under the action of the guide wire (30) and covered at the catheter hole (11). 2. The novel urinary catheter for preventing blood clot blockage according to claim 1, wherein the filter screen (20) is arranged on the proximal end side of the urinary catheter hole (11), and its proximal side is fixed It is arranged on the inner wall of the catheterization lumen (16), the distal side is connected with the distal end of the guide wire (30), and the filter screen (20) is unfolded and covered by the guide wire (30). It is arranged at the catheter hole (11). 3. The novel urinary catheter for preventing blood clot blockage according to claim 1, wherein the filter screen (20) is arranged on the distal side of the urinary catheter hole (11), and its distal side is fixed It is arranged on the inner wall of the catheterization lumen (16), the proximal side is connected to the distal end of the guide wire (30), and the filter screen (20) is unfolded and covered under the pulling of the guide wire (30). It is arranged at the catheter hole (11). 4. The novel urinary catheter for preventing blood clot blockage according to claim 2 or 3, characterized in that the upper and lower ends of the filter screen (20) are respectively fixed to the catheterization hole by a first pin (21) (11) On the tube walls at the top and bottom, the proximal side or the distal side of the filter screen (20) is fixed on the proximal side or the far side of the catheter hole (11) through a plurality of second pins (22). on the side of the pipe wall. 5. The novel urinary catheter for preventing blood clot blockage according to claim 2 or 3, wherein the filter screen (20) is made of an elastic memory alloy material, which is crescent-shaped under the action of external force. In the contracted state, it is a circular or elliptical expanded state under the action of external force. 6. The novel urinary catheter for preventing blood clot blockage according to claim 2 or 3, characterized in that, a balloon lumen (17) is opened on the side wall of the tube body (10) along its length direction, and the balloon One end of the balloon channel (17) is connected with the balloon (12), and the other end is connected with the balloon joint (15). 7. The novel urinary catheter for preventing blood clot blockage according to claim 2 or 3, characterized in that, a guide wire lumen (18) is opened on the side wall of the tube body (10) along its length direction, and the guide wire One end of the silk lumen (18) communicates with the catheterization lumen (16) between the catheter hole (11) and the balloon (12), and the other end communicates with the catheter disposed at the proximal end of the tube body (10). wire connector (14). 8. The novel urinary catheter for preventing blood clot blockage according to claim 2 or 3, characterized in that an arc is also provided at the position of the inner wall of the urinary catheter (16) close to the urinary catheter hole (11). The arc-shaped limit block (19) and the filter screen (20) in the retracted state are respectively located on both sides of the catheterization hole (11). 9 . The novel urinary catheter for preventing blood clot blockage according to claim 1 , wherein there are two urinary catheter holes ( 11 ), which are symmetrically arranged at the distal end of the tube body ( 10 ). 10 . 10 . The novel urinary catheter for preventing blood clot blockage according to claim 1 , wherein the tube body ( 10 ) is made of rubber, latex or silicone. 11 .

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