Flexible ureteroscope pelvis-side cyst positioning puncture device

Abstract

The utility model discloses a flexible ureteroscope para-pelvic cyst positioning puncture device which comprises a bendable outer sheath, a catheter is installed in the bendable outer sheath in a sliding mode, and a hollow needle which penetrates through the front end of the bendable outer sheath to puncture para-pelvic cyst is installed at the front end of the catheter. The tail end of the catheter is respectively communicated with the first injection assembly and the second injection assembly through a three-way valve; the catheter with the hollow needle is mounted in an operation channel of the flexible ureteroscope through the bendable outer sheath, and meanwhile, the first injection component and the second injection component are matched to complete puncture of the wall of the cyst beside the pelvis and final positioning marks for injecting a developing agent into the cyst beside the pelvis; the device is convenient for the follow-up accurate internal incision and drainage of the marked para-pelvic cyst by holmium laser under a flexible ureteroscope, and solves the problem that the para-pelvic cyst is inaccurate in positioning and the surgical operation is influenced due to the thick cyst wall or the complex and difficult observation of the integrated system structure in the operation.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and in particular to a ureteroscope parapelvic cyst positioning and puncturing device. Background Art

[0002] Renal cyst refers to a cystic disease in which a single or multiple cystic masses and fluid are present in the renal tissue. Cysts that occur near the renal hilum and renal sinus can enter the renal sinus when they grow larger, which is a parapelvic cyst. Specific surgical methods for renal cysts include open cyst incision and decompression, percutaneous puncture sclerotherapy, ureteroscopy and laparoscopic renal cyst removal. In clinical practice, laparoscopic parapelvic cyst removal and decompression are relatively complicated, with great trauma and easy recurrence. The natural orifice parapelvic cyst incision and internal drainage is mainly based on ureteroscopy laser internal incision. The method mainly involves using holmium laser to internally incise the parapelvic cyst through the collecting system, so that the cyst is connected to the collecting system, eliminating or reducing the pressure on the renal tissue around the cyst, restoring renal blood flow, and protecting and improving renal function. Although the natural orifice parapelvic cyst incision and internal drainage has less postoperative trauma and faster patient recovery, it is sometimes difficult to find the cyst wall.

[0003] Chinese patent 2020101792874 discloses a non-invasive positioning device for ureteroscopy of parapelvic cysts. The No. 1 detection head is quickly positioned above the patient's kidneys through a marking spotlight, and the No. 2 detector is used to detect the patient's waist to form a three-dimensional image. The main way to identify cysts in this invention is in vitro identification, but it is not easy to accurately locate the position of cysts with thick cyst walls or complex collecting systems. If the cysts are opened blindly, the collecting system will be damaged. In severe cases, miscutting of blood vessels may lead to complications such as massive bleeding. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a ureteroscope parapelvic cyst positioning and puncture device, which can solve the problem of inaccurate positioning of parapelvic cysts and influence on surgical operation due to the thick cyst wall or complex collecting system structure that is difficult to observe during surgery.

[0005] In order to solve the above technical problems, the technical solutions adopted by the present utility model are as follows.

[0006] A ureteroscope parapelvic cyst positioning and puncturing device comprises a flexible outer sheath, a catheter is slidably mounted inside the flexible outer sheath, a hollow needle is mounted at the front end of the catheter and passes through the front end of the flexible outer sheath to puncture the parapelvic cyst; the tail end of the catheter is connected through a three-way valve to a first injection component for extracting cyst fluid in the catheter to determine the puncture of the cyst and a second injection component for injecting a developer into the cyst puncture site for marking and positioning.

[0007] In the above-mentioned ureteroscope parapelvic cyst positioning and puncturing device, the two ends of the flexible outer sheath are respectively provided with through holes for the catheter and the hollow needle to pass through, and the size of the through hole at the front end of the flexible outer sheath is smaller than that of the through hole at the rear end.

[0008] In the above-mentioned ureteroscope parapelvic cyst positioning and puncture device, the first injection component includes a first branch tube connected to a connector on one side of the three-way valve, and the first branch tube is connected to the first syringe; a positive pressure connector is installed between the first branch tube and the first syringe.

[0009] In the above-mentioned ureteroscope parapelvic cyst positioning and puncture device, the second injection assembly includes a second branch tube connected to the connector on the other side of the three-way valve, the second branch tube is connected to the second syringe, and a positive pressure connector is also installed between the second branch tube and the second syringe.

[0010] Due to the adoption of the above technical scheme, the technical progress achieved by the present invention is as follows.

[0011] The utility model provides a ureteroscope parapelvic cyst positioning and puncturing device, which installs a catheter with a hollow needle in the operating channel of the ureteroscope through a flexible outer sheath, and simultaneously completes the puncture of the parapelvic cyst wall and the final positioning mark of the parapelvic cyst injection by the first injection component and the second injection component, so as to facilitate the subsequent precise internal incision and drainage of the parapelvic cyst after marking by holmium laser under the ureteroscope, and solves the problem of inaccurate positioning of the parapelvic cyst and influence on the surgical operation due to the thick cyst wall or the complex structure of the collecting system that is difficult to observe during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the specific structure of the utility model.

[0013] Wherein: 1. bendable outer sheath, 2. catheter, 3. hollow needle, 4. three-way valve, 5. first branch tube, 6. first syringe, 7. positive pressure connector, 8. second syringe, 9. second branch tube. DETAILED DESCRIPTION

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0015] A ureteroscope parapelvic cyst positioning puncture device, such as Figure 1 As shown, it includes a flexible outer sheath 1, a catheter 2 is slidably installed inside the flexible outer sheath 1, a hollow needle 3 is installed at the front end of the catheter 2, and the tail end of the catheter 2 is connected to the first injection component and the second injection component through a three-way valve 4, wherein the first injection component is used to extract the cyst fluid in the catheter to determine the puncture of the cyst, and the second injection component is used to inject a developer into the cyst puncture site for marking and positioning.

[0016] Through holes for the catheter 2 and the hollow needle 3 to pass through are respectively provided at both ends of the flexible outer sheath 1, and the size of the through hole at the front end of the flexible outer sheath 1 is smaller than that of the through hole at the rear end, which can limit the catheter 2 and prevent the catheter 2 from excessively extending out of the end of the flexible outer sheath 1, causing unstable puncture.

[0017] The first injection assembly includes a first branch pipe 5 connected to a joint on one side of the three-way valve 4 , and the first branch pipe 5 is connected to a first syringe 6 .

[0018] A positive pressure joint 7 is installed between the first branch pipe 5 and the first syringe 6. The positive pressure joint 7 can form a positive pressure inside the pipeline to ensure the normal circulation of the fluid in the pipeline, thereby ensuring the safe operation of the entire pipeline system.

[0019] The second injection assembly includes a second branch pipe 9 connected to the joint on the other side of the three-way valve 4 , the second branch pipe 9 is connected to the second syringe 8 , and a positive pressure joint 7 is also installed between the second branch pipe 9 and the second syringe 8 .

[0020] When in use, the hollow needle 3 at the front end of the catheter 2 is inserted into the flexible outer sheath 1, the catheter 2 is slid inside the flexible outer sheath 1 for adjustment, and then the flexible outer sheath 1 is inserted into the operating channel of the ureteroscope. During this process, it is necessary to ensure that the end of the hollow needle 3 does not exceed the front end of the flexible outer sheath 1 to avoid damage to the ureteroscope caused by the hollow needle.

[0021] After the ureteroscope enters the renal pelvis, the hollow needle 3 can be pushed out of the front end of the bendable outer sheath, and the hollow needle can be pushed to puncture the wall of the suspected parapelvic cyst through the ureteroscope in conjunction with extracorporeal ultrasound observation. At the same time, the first syringe 6 is used to withdraw to observe whether cyst fluid is extracted to determine whether the parapelvic cyst is punctured. During this process, the valve connected to the second branch tube 9 is in a closed state.

[0022] Next, the three-way valve connected to the second branch pipe 9 is opened, the three-way valve connected to the first branch pipe 5 is closed, and the developer is injected into the punctured capsule wall through the second syringe 8 for marking.

[0023] Finally, the marked parapelvic cyst is precisely incised and drained with the help of holmium laser under ureteroscope to avoid uncontrollable massive bleeding caused by damage to the collecting system or large blood vessels in the kidney.

[0024] The utility model provides a ureteroscope parapelvic cyst positioning and puncturing device, which installs a catheter with a hollow needle in the operating channel of the ureteroscope through a flexible outer sheath, and simultaneously completes the puncture of the parapelvic cyst wall and the final positioning mark of the parapelvic cyst through the cooperation of the first injection component and the second injection component, so as to facilitate the subsequent precise internal incision and drainage of the parapelvic cyst marked by holmium laser under the ureteroscope, and solves the problem of inaccurate positioning of the parapelvic cyst and influence on the surgical operation due to the thick cyst wall or the complex structure of the collecting system that is difficult to observe during the operation.

Claims

1. A flexible ureteroscope for positioning and puncturing parapelvic cysts, characterized in that: The invention comprises a flexible outer sheath (1), wherein a catheter (2) is slidably mounted inside the flexible outer sheath (1), and a hollow needle (3) is mounted at the front end of the catheter (2) for penetrating the front end of the flexible outer sheath (1) and puncturing the parapelvic cyst; the rear end of the catheter (2) is connected via a three-way valve (4) to a first injection component for extracting cyst fluid in the catheter to determine the puncture of the cyst and a second injection component for injecting a developer into the puncture site of the cyst for marking and positioning.

2. A ureteroscope parapelvic cyst positioning and puncture device according to claim 1, characterized in that: Through holes for the catheter (2) and the hollow needle (3) to pass through are respectively provided at both ends of the flexible outer sheath (1), and the size of the through hole at the front end of the flexible outer sheath (1) is smaller than the size of the through hole at the rear end.

3. A flexible ureteroscope parapelvic cyst positioning and puncture device according to claim 1, characterized in that: The first injection assembly comprises a first branch pipe (5) connected to a joint on one side of the three-way valve (4), the first branch pipe (5) being connected to a first syringe (6); a positive pressure joint (7) is installed between the first branch pipe (5) and the first syringe (6).

4. A flexible ureteroscope parapelvic cyst positioning and puncturing device according to claim 1, characterized in that: The second injection assembly comprises a second branch pipe (9) connected to a joint on the other side of the three-way valve (4), the second branch pipe (9) being connected to a second syringe (8), and a positive pressure joint (7) is also installed between the second branch pipe (9) and the second syringe (8).

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