CN116271448A

CN116271448A - Visual ureter tracing device and method

Info

Publication number: CN116271448A
Application number: CN202310153246.1A
Authority: CN
Inventors: 张汀樾
Original assignee: Second Xiangya Hospital of Central South University
Current assignee: Second Xiangya Hospital of Central South University
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-06-23

Abstract

The disclosure relates to the technical field of medical instruments, in particular to a visual ureter tracing device and method. The catheter comprises a catheter body, wherein a first balloon is sleeved on the upper part of the catheter body, and a second balloon is sleeved on the middle part of the catheter body; the catheter body comprises a first cavity, a second cavity, a third cavity and a fourth cavity, the outlet end of the first cavity is closed, and a first side hole is arranged between the first cavity and the first saccule; the outlet end of the second cavity is closed, and a second side hole is arranged between the second cavity and the second saccule; the outlet end of the third cavity is closed, the side walls of the third cavity and the catheter body are provided with third side holes, the third side holes are arranged between the first balloon and the second balloon, and the third cavity is used for conveying contrast agents or colored solutions; the fourth cavity is used for catheterization. Through above-mentioned setting, this disclosure provides a device that can in time accurately show ureter damage position in the operation in-process, solves present doctor and only can judge the problem of damage through touching the ureter.

Description

Visual ureter tracing device and method

Technical Field

The disclosure relates to the technical field of medical instruments, in particular to a visual ureter tracing device and method.

Background

The ureter is an organ connecting the renal pelvis and the bladder, draining urine produced by the kidneys to the bladder, and is located extraperitoneally, a hollow myogenic duct. The total length of the ureter is about 20-30cm, and the ureter is from the tail end of the renal pelvis to the bladder, and the average diameter of the pipe is 0.5-1.0cm, and is divided into a ureter abdominal section, a pelvic section and an inner section of the bladder wall. When a ureter is stenosed or obstructed, the urine drainage by the kidneys is not smooth or completely interrupted, which can lead to hydronephrosis and even renal failure.

During the pelvic cavity and abdominal cavity operation, the ureter is prevented from being damaged as much as possible. When serious adhesion exists in the pelvic cavity, the volume of benign and malignant tumors is large or irregular, and the anatomical relation of the pelvic cavity is obviously changed and extremely unclear, when bleeding in the operation is in a rough condition for hemostasis, the ureter is extremely easily damaged by the operation, the ureter is separated, partially damaged due to cutting, blocked due to suture and the like, and the ureter injury is often difficult to discover in time in the difficult operation process.

Thus, in order to reduce the ureteral injury during surgery, a doctor often adopts a method of repeatedly touching the ureter during surgery or viewing the ureter shape and freeing the ureter to display the ureter shape, but the method still has a very high probability of causing the injury and is difficult to find the ureter injury position.

Disclosure of Invention

In order to solve the technical problems, the present disclosure provides a visual ureter tracing device and a method.

The disclosure provides a visual ureter tracer device, which comprises a catheter body, wherein a first balloon is sleeved on the upper part of the catheter body, and a second balloon is sleeved on the middle part of the catheter body;

the catheter body is internally provided with a plurality of cavities, including a first cavity, a second cavity, a third cavity and a fourth cavity, wherein the outlet end of the first cavity, which is close to one end of the first balloon, is closed, and a first side hole is arranged between the first cavity and the first balloon; the outlet end of the second cavity, which is close to one end of the first balloon, is closed, and a second side hole is arranged between the second cavity and the second balloon; the third cavity surrounds the fourth cavity, the outlet end of the third cavity close to one end of the first balloon is closed, a third side hole is formed in the side wall of the third cavity and the side wall of the catheter body, the third side hole is formed between the first balloon and the second balloon, and the third cavity is used for conveying contrast agents or colored solutions; the fourth cavity is communicated with the ureter and the outside for catheterization.

Optionally, an operation part is arranged at the outlet end of the catheter body, the operation part comprises a first operation part, a second operation part and a third operation part, the first operation part is communicated with the first cavity, and the first balloon is externally connected with normal saline through the first operation part; the second operation part is communicated with the second cavity, and the second balloon is externally connected with physiological saline through the second operation part; the third operation part is communicated with the third cavity and is used for injecting contrast agent or colored solution.

Optionally, two-way valves are arranged on the first operation part and the second operation part, and the two-way valves are used for controlling physiological saline to enter and exit the first balloon and the second balloon.

Optionally, the first balloon and/or the second balloon are made of polyurethane, nylon or block polyamide.

Optionally, the catheter body is made of a flexible material and the surface of the catheter body is coated with a hydrophilic lubricating coating.

Optionally, the surface of the catheter body is provided with a scale, which is convenient for judging the depth of the head end of the catheter body entering the body and estimating the position of the head end of the catheter body.

Optionally, the outlet end of the second cavity is located in a middle section of the second balloon.

Optionally, the outlet end of the first cavity is located in a middle section of the first balloon.

Optionally, the outlet end of the fourth cavity extends out of the first balloon.

The disclosure also provides a visual ureter tracing method, which uses the visual ureter tracing device, and comprises the following steps:

s1: the catheter body is placed into the ureter of the patient by cystoscope:

s2: injecting normal saline into the first balloon through the first operation part, so that the first balloon fills at one end of the ureter far away from the bladder;

s3: injecting normal saline into the second balloon through the second operation part, so that the second balloon fills at one end of the ureter, which is close to the bladder;

s4: injecting a contrast agent or a colored solution into the third cavity through the third operation part, and flowing the contrast agent or the colored solution into the ureter through the third side hole;

s5: the physiological saline in the first balloon and the second balloon is completely discharged through the first operation part and the second operation part, and the catheter body is pulled out.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

the disclosure provides a visual ureter tracer device, wherein physiological saline is injected into a first balloon through a first cavity, so that the first balloon fills at one end of a ureter far away from a bladder; injecting normal saline into the second saccule through the second cavity, so that the second saccule fills at one end of the ureter, which is close to the bladder; injecting a contrast agent or colored solution into the ureter through the third cavity to complete visualization under contrast or direct view due to outflow of the colored liquid; urine in the ureter is discharged to the outside through the fourth cavity. Through the setting of above-mentioned a plurality of cavitys and a plurality of sacculus, this disclosure provides a device that can in time accurately show ureter damage position in the operation in-process, can solve present doctor and only can judge the problem that the damage brought inconvenient and easy damage ureter through touching the ureter.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is an overall structure diagram of a visual ureter tracer device according to an embodiment of the disclosure;

FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1;

FIG. 3 is a semi-sectional view of FIG. 1;

FIG. 4 is an enlarged view at B of FIG. 3;

fig. 5 is an enlarged view at C of fig. 3.

1, a catheter body; 11. a first cavity; 111. a first side hole; 12. a second cavity; 121. a second side hole; 13. a third cavity; 131. a third side hole; 14. a fourth cavity; 2. a first balloon; 3. a second balloon; 4. an operation unit; 41. a first operation section; 42. a second operation section; 43. a third operation section; 44. a two-way valve.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.

The disclosure provides a visual ureter tracer device, which comprises a catheter body 1, wherein a first balloon 2 is sleeved on the upper part of the catheter body 1, and a second balloon 3 is sleeved on the middle part of the catheter body 1; the catheter body 1 is provided with a plurality of cavities, including a first cavity 11, a second cavity 12, a third cavity 13 and a fourth cavity 14, wherein the outlet end of the first cavity 11 close to one end of the first balloon 2 is closed, and a first side hole 111 is arranged between the first cavity 11 and the first balloon 2; the outlet end of the second cavity 12, which is close to one end of the first balloon 2, is closed, and a second side hole 121 is arranged between the second cavity 12 and the second balloon 3; the third cavity 13 is arranged around the fourth cavity 14, the outlet end of the third cavity 13 close to one end of the first balloon 2 is closed, the side walls of the third cavity 13 and the catheter body 1 are provided with third side holes 131, the third side holes 131 are arranged between the first balloon 2 and the second balloon 3, and the third cavity 13 is used for conveying contrast agents or colored solutions; the fourth cavity 14 communicates the ureter with the outside for catheterization.

As shown in fig. 1 to 5, the present embodiment provides a catheter body 1, in order to adapt to the shape of the ureter, the catheter body 1 is of a cylindrical tubular structure, a plurality of cavities are provided in the catheter body 1, each cavity extends along the length direction of the catheter body 1, and each cavity is of a cylindrical structure. The upper part and the middle part of the catheter body 1 are respectively sleeved with a balloon, namely a first balloon 2 and a second balloon 3. A first side hole 111 is provided between the first cavity 11 and the first balloon 2 in this embodiment, and physiological saline flows from the first cavity 11 to the first balloon 2 through the first side hole 111 to fill the first balloon 2. A second side hole 121 is provided between the second cavity 12 and the second balloon 3 in this embodiment, and physiological saline flows from the second cavity 12 to the second balloon 3 through the second side hole 121 to fill the second balloon 3. Through the arrangement of the first cavity 11, the second cavity 12, the first side hole 111 and the second side hole 121 described above, the present embodiment provides a structure capable of controlling the expansion of the balloon. In addition, in this embodiment, a third cavity 13 is further provided, the third cavity 13 is disposed around the fourth cavity 14, the third cavity 13 is used for delivering a contrast agent or a colored solution, a third side hole 131 is further provided on the side wall of the third cavity 13 and the catheter body 1, and the contrast agent or the colored solution can flow out of the catheter body 1 from the third cavity 13 through the arrangement of the third side hole 131. The fourth cavity 14 penetrates through the upper and lower ends of the catheter body 1 to discharge urine in the ureter to the outside.

Both the first balloon 2 and the second balloon 3 can be filled with physiological saline to match with the ureter, and the position of the catheter body 1 can be fixed when the catheter body 1 is inserted into the ureter. The arrangement of the first balloon 2 and the second balloon 3 also has another effect: when the first balloon 2 and the second balloon 3 are inflated and expanded in the ureter, the ureter between the first balloon 2 and the second balloon 3 can be in a closed state with no vertical penetration, at this time, the operation part 4 injects contrast agent or colored solution into the third cavity 13, if the ureter is damaged, the contrast agent or colored solution will not be diluted or flushed away by urine, but directly flows out from the damaged part of the ureter, if the contrast agent is used, the ureter is visualized by contrast, if the colored solution is used, a doctor can timely and accurately find the damaged position of the ureter.

Through above-mentioned setting, this embodiment provides a device that can in time accurately show ureter damage position in the operation in-process, can solve present doctor and can only judge the problem that the damage brought inconvenient and easy damage ureter through touching the ureter in the operation in-process.

In addition, when hydronephrosis and a great deal of effusion of abdominal cavity occur in postoperative patients, auxiliary examination such as ultrasound and CT are also needed to assist diagnosis, and secondary operation repair or ureteral stent implantation is also needed usually, so that a doctor is difficult to find the position of ureteral injury. Therefore, the present embodiment can also be applied after surgery, and the damage of the ureter can be found by radiography.

As shown in fig. 1 and 2, the outlet end of the catheter body 1 is provided with an operation portion 4, and the operation portion 4 includes a first operation portion 41, a second operation portion 42, and a third operation portion 43; the first operation part 41 is communicated with the first cavity 11, and the first balloon 2 is externally connected with physiological saline through the first operation part 41; the second operation part 42 is communicated with the second cavity 12, and the second balloon 3 is externally connected with physiological saline through the second operation part 42; the third operating portion 43 communicates with the third cavity 13 for injecting a contrast agent or a colored solution. By providing the first operation unit 41 and the second operation unit 42, a syringe or a pressure pump can be connected to the first operation unit 41 and/or the second operation unit 42, and physiological saline can be injected into the first balloon 2 and/or the second balloon 3 by the action of the syringe and the pressure pump to complete the inflation of the two balloons. The third operation unit 43 is similar to the principle of the two operation units 4, and can perform the operation such as the contrast of ureter by injecting a contrast medium or a colored solution into the third cavity 13 by means of an injector. The first, second and

third operating parts

41, 42 and 43 in this embodiment are the parts of the first, second and

third cavities

11, 12 and 13 extending out of the catheter body 1, respectively, and are located outside the patient body, so that the operation of a doctor is facilitated, and the operations such as ureterography and the like are completed.

In order to facilitate filling of the first balloon 2 and the second balloon 3 with physiological saline, two-way valves 44 are respectively arranged on the first operation part 41 and the second operation part 42, and the two-way valves 44 are used for controlling the physiological saline to enter and exit the first balloon 2 and the second balloon 3. When the two-way valve 44 is opened, physiological saline can be injected into the first and

second cavities

11 and 12 through the first and

second operation parts

41 and 42 to complete filling of the first and

second balloons

2 and 3. After filling is completed, the two-way valve 44 is closed, and the first balloon 2 and the second balloon 3 are always in the filling and expanding state. After the operation is completed, the two-way valve 44 is opened again, physiological saline in the first balloon 2 and the second balloon 3 flows out of the body, and the first balloon 2 and the second balloon 3 retract, so that a doctor can conveniently pull out the whole catheter body 1 from the body.

In this embodiment, the first balloon 2 and/or the second balloon 3 are made of polyurethane, nylon or block polyamide. Polyurethane, nylon or block polyamide all have good biocompatibility and are soft, and are good manufacturing materials.

In particular to the catheter body 1, the catheter body 1 is made of a flexible material, and the surface of the catheter body 1 is coated with a hydrophilic lubricating coating. The catheter body 1 may be made of polyurethane, block polyamide, or the like.

In addition, the surface of the catheter body 1 is provided with scales, and the scales are convenient for judging the depth of the head end of the catheter body 1 entering the body and estimating the position of the head end. During the process of inserting the catheter body 1 into the ureter by a doctor, whether the catheter body 1 is inserted into place or not can be judged by the X-ray interpretation scale.

In particular to the second cavity 12, the outlet end of the second cavity 12 is located in the middle of the second balloon 3. The physiological saline enters the second cavity 12 through the second operation portion 42, flows to the outlet end in the second cavity 12, and since the outlet end is closed, the physiological saline can only enter the second balloon 3 through the second side hole 121, and fills the second balloon 3. From the above, it is clear that the location of the outlet end of the second cavity 12 is the optimal location for the filling of the second balloon 3. Of course, the outlet end of the second cavity 12 may also be directly connected to the second side hole 121, which also facilitates filling of the second balloon 3.

In particular to the first cavity 11, the outlet end of the first cavity 11 is located in the middle of the first balloon 2. In the same principle as the second cavity 12, the normal saline enters the first cavity 11 through the first operation part 41, flows to the outlet end in the first cavity 11, and since the outlet end is closed, the normal saline can enter the first balloon 2 only through the first side hole 111, and fills the first balloon 2.

The fourth cavity 14 is for guiding out urine in the ureter, the outlet end of the fourth cavity 14 extends out of the first balloon 2. The end of the fourth cavity 14 is connected with the end of the catheter body 1, and as shown in fig. 3, the end of the fourth cavity 14 far away from the bladder is provided with a funnel shape, so that urine can be more conveniently guided.

s1: the catheter body 1 is placed into the ureter of the patient by cystoscope:

s2: the first balloon 2 is filled with physiological saline through the first operation part 41 at one end of the ureter far from the bladder;

s3: injecting physiological saline into the second balloon 3 through the second operation part 42, so that the second balloon 3 fills at one end of the ureter, which is close to the bladder;

s4: injecting a contrast agent or a colored solution into the third cavity 13 through the third operation part 43, the contrast agent or the colored solution flowing into the ureter through the third side hole 131;

s5: the first and

second operation parts

41 and 42 discharge all of the physiological saline in the first and

second balloons

2 and 3, and the catheter body 1 is pulled out.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The visualized ureter tracing device is characterized by comprising a catheter body (1), wherein a first balloon (2) is sleeved on the upper part of the catheter body (1), and a second balloon (3) is sleeved on the middle part of the catheter body (1);

a plurality of cavities are arranged in the catheter body (1), each cavity comprises a first cavity (11), a second cavity (12), a third cavity (13) and a fourth cavity (14), the outlet end of the first cavity (11) close to one end of the first balloon (2) is closed, and a first side hole (111) is formed between the first cavity (11) and the first balloon (2); the outlet end of the second cavity (12) close to one end of the first balloon (2) is closed, and a second side hole (121) is arranged between the second cavity (12) and the second balloon (3); the third cavity (13) is arranged around the fourth cavity (14), the outlet end of the third cavity (13) close to one end of the first balloon (2) is closed, the third cavity (13) and the side wall of the catheter body (1) are provided with third side holes (131), the third side holes (131) are arranged between the first balloon (2) and the second balloon (3), and the third cavity (13) is used for conveying contrast agent or colored solution; the fourth cavity (14) is communicated with the ureter and the outside for catheterization.

2. The visualized ureteral tracer device according to claim 1, characterized in that an operation part (4) is arranged at the outlet end of the catheter body (1), the operation part (4) comprises a first operation part (41), a second operation part (42) and a third operation part (43), the first operation part (41) is communicated with the first cavity (11), and the first balloon (2) is externally connected with physiological saline through the first operation part (41); the second operation part (42) is communicated with the second cavity (12), and the second balloon (3) is externally connected with physiological saline through the second operation part (42); the third operation part (43) is communicated with the third cavity (13) and is used for injecting the contrast agent or the colored solution.

3. The visualized ureteral tracer device according to claim 2, characterized in that the first operating portion (41) and the second operating portion (42) are both provided with two-way valves (44), and the two-way valves (44) are used for controlling the physiological saline to enter and exit the first balloon (2) and the second balloon (3).

4. The visual ureteral tracer device according to claim 1, characterized in that the first balloon (2) and/or the second balloon (3) are made of polyurethane, nylon or block polyamide.

5. The visual ureteral tracer device according to claim 1, characterized in that the catheter body (1) is made of a flexible material and the surface of the catheter body (1) is coated with a hydrophilic lubricating coating.

6. The visual ureteral tracer device according to claim 1, characterized in that the surface of the catheter body (1) is provided with graduations which facilitate the determination of the depth of the head end of the catheter body (1) into the body and the estimation of its position.

7. The visual ureteral tracer device according to claim 1, characterized in that the outlet end of the second cavity (12) is located in the middle section of the second balloon (3).

8. The visual ureteral tracer device according to claim 1, characterized in that the outlet end of the first cavity (11) is located in the middle section of the first balloon (2).

9. The visual ureteral tracer device according to claim 1, characterized in that the outlet end of the fourth cavity (14) extends out of the first balloon (2).

10. A method of visualizing ureteral tracers using the visualized ureteral tracer device of any of claims 1 to 9, comprising the steps of:

s1: placing the catheter body (1) into the ureter of the patient by cystoscope:

s2: injecting physiological saline into the first balloon (2) through the first operation part (41), so that the first balloon (2) fills at one end of the ureter far away from the bladder;

s3: injecting physiological saline into the second balloon (3) through the second operation part (42), so that the second balloon (3) fills at one end of the ureter, which is close to the bladder;

s4: injecting a contrast agent or a colored solution into the third cavity (13) through the third operation part (43), and flowing the contrast agent or the colored solution into the ureter through the third side hole (131);

s5: the first operation part (41) and the second operation part (42) are used for discharging all physiological saline in the first balloon (2) and the second balloon (3), and the catheter body (1) is pulled out.