Novel biological electrocoagulation and electroresection snare device for pedicle in urinary tract

Abstract

The utility model relates to a novel biological electrocoagulation and electroresection snare device for a pedicle in a urinary cavity, which is used for effectively improving the operation safety and preventing normal tissues from being damaged by resection operation, and the operation is simple, more convenient and more flexible. Comprising an operating handle, an upper sliding block, a lower sliding block, a first metal wire and a second metal wire, the operating handle is provided with a longitudinal cavity penetrating through the front end of the operating handle, and the upper sliding block and the lower sliding block are installed on the operating handle through a longitudinal sliding structure. Main bodies of the first metal wire and the second metal wire are located in the longitudinal cavity, and the rear ends of the first metal wire and the second metal wire are fixedly connected with the lower sliding block and the upper sliding block respectively; the front end of the first metal wire is bent and then welded with a first metal wire body to form a restraint ring, and the first metal wire body penetrates through the restraint ring to form an electrocoagulation and electroresection snare outside the front end face of the operating handle; and the front end of the second metal wire is welded with the first metal wire body at a position adjacent to the restraint ring.

Description

Technical Field

[0001] The utility model relates to medical equipment, in particular to a urinary cavity pedicled new biological electrocoagulation and electroresection snare device, which is used for ligation and removal of renal pelvis and ureteral cauliflower polyps. Background Art

[0002] Pedunculated neoplasms of the renal pelvis or ureteral urothelium are mostly urothelial carcinomas. Computed tomography (CT) and magnetic resonance imaging (MR) can only provide imaging diagnostic evidence. The gold standard is pathological examination. However, due to the narrow diameter of the ureter, about 3-6 mm, biopsy is difficult. Nephroureterectomy without pathological evidence has certain medical risks and causes irreparable losses to patients. On the other hand, some patients with poor physical conditions and relative contraindications to surgery are also faced with a dilemma in treatment. If pedunculated neoplasms can be removed as much as possible using intracavitary technology, not only can pathological specimens be obtained for a clear diagnosis, but also the patient's survival can be delayed and the kidneys and their functions can be preserved.

[0003] At present, the endoscopic surgery for renal pelvic and ureteral polyps is to cauterize them with laser, and then remove them with stone basket or foreign body forceps, but there are the following disadvantages: 1. The visual field is poor during laser cauterization, resulting in a long operation time; 2. Tumor cells are necrotic after laser cauterization, making postoperative pathological diagnosis difficult; 3. Laser causes great damage to the surrounding normal mucosal tissue. Therefore, a new device is urgently needed to overcome the above disadvantages. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a urinary cavity pedicled new biological electrocoagulation and electroresection snare device to effectively improve the safety of surgery, avoid damage to normal tissues caused by resection surgery, and make the surgery simple, convenient and flexible.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] The utility model discloses a cauliflower polyp ligation and removal device for the renal pelvis and ureter, characterized in that it comprises an operating handle, an upper slider, a lower slider, a first metal wire and a second metal wire; the operating handle has a longitudinal cavity penetrating through its front end, and the upper slider and the lower slider are mounted on the operating handle via a longitudinal sliding structure; the main bodies of the first metal wire and the second metal wire are located in the longitudinal cavity, and their rear ends are fixedly connected to the lower slider and the upper slider respectively; the front end of the first metal wire is bent and welded to the first metal wire body to form a constraint ring, and the first metal wire body passes through the constraint ring to form an electrocoagulation and electroresection snare outside the front end surface of the operating handle; the front end of the second metal wire is welded to the first metal wire body at the position adjacent to the constraint ring.

[0007] The beneficial effects of the utility model are that it can effectively improve the safety of surgery, avoid damage to normal tissues caused by resection surgery, and have a good hemostasis effect; the surgical operation is simple and more convenient and flexible, and there is no need to use foreign body forceps or stone baskets, thus saving surgical costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] This specification includes the following three drawings:

[0009] Figure 1 It is a structural schematic diagram of a pedicled new biological electrocoagulation and electroresection snare device for urinary tract of the utility model;

[0010] Figure 2 It is a longitudinal cross-sectional view of a new biological electrocoagulation and electroresection snare device with a pedicle for a urinary cavity according to the utility model;

[0011] Figure 3 is along Figure 2 Cross-section diagram of the middle AA line;

[0012] The figure shows the components and corresponding marks: operating handle 10, longitudinal chamber 11, upper guide groove 12, lower guide groove 13, upper slider 21, lower slider 22, first metal wire 31, restraining ring 31a, electrocoagulation and electroresection snare 31b, second metal wire 32. DETAILED DESCRIPTION

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Reference Figure 1 and Figure 2 The utility model discloses a urinary cavity pedicled new biological electrocoagulation and cutting snare device, which comprises an operating handle 10, an upper slider 21, a lower slider 22, a first metal wire 31 and a second metal wire 32. The operating handle 10 has a longitudinal chamber 11 that passes through its front end, and the upper slider 21 and the lower slider 22 are installed on the operating handle 10 through a longitudinal sliding structure. The main bodies of the first metal wire 31 and the second metal wire 32 are located in the longitudinal chamber 11, and their rear ends are fixedly connected to the lower slider 22 and the upper slider 21, respectively. After the front end of the first metal wire 31 is bent, it is welded to the main body of the first metal wire 31 to form a constraint ring 31a, and the main body of the first metal wire 31 passes through the constraint ring 31a to form an electrocoagulation and cutting snare 31b outside the front end surface of the operating handle 10. The front end of the second metal wire 32 is welded to the main body of the first metal wire 31 at the position adjacent to the constraint ring 31a. The position of the restraint ring 31a is controlled by the second metal wire 32, and the first metal wire 31 is driven to extend or retract by the forward and backward movement of the lower slider 22, thereby accurately adjusting the size of the electrocoagulation and electrocuting snare 31b. The orientation of the electrocoagulation and electrocuting snare 31b is achieved by deflecting the operating handle 10 degrees, so the surgical operation is simple and more convenient and flexible.

[0015] Reference Figure 2 During the operation, the size of the electrocoagulation and electroresection snare 31b is adjusted by moving the lower slider 22 forward and backward to adapt to tumors of different sizes. The diameter of the electrocoagulation and electroresection snare 31b is between 0.5-3cm (i.e., the range of polyp sizes that can be removed). After the electrocoagulation and electroresection snare 31b is firmly locked on the root of the polyp to be removed, the first metal wire 31 retracts and tightens the electrocoagulation and electroresection snare 31b, and the lower slider 22 is moved backward to the 1st gear to enter the electrocoagulation mode, burn the blood vessels at the root of the polyp to avoid bleeding; then the slider 22 is continued to be moved backward to the 2nd gear to enter the electroresection mode, completely remove the pedunculated neoplasm and take it out. Compared with laser resection, the utility model can effectively improve the safety of the operation, avoid damage to normal tissues caused by the resection operation, and has a good hemostatic effect. The operation is simple, more convenient and flexible, and there is no need to use foreign body forceps or stone baskets, saving surgical costs.

[0016] Reference Figure 2 and Figure 3 As a preferred embodiment of the present invention, the longitudinal sliding structure includes an upper guide groove 12 and a lower guide groove 13 extending longitudinally and provided on the outer walls on both sides of the operating handle 10. The inner walls on both sides of the upper slider 21 have guide ridges inserted into the upper guide groove 12, and the upper slider 21 can slide back and forth along the upper guide groove 12. The inner walls on both sides of the lower slider 22 have guide ridges inserted into the lower guide groove 13, and the lower slider 22 can slide back and forth along the lower guide groove 13. Figure 3 The upper slider 21 has a lower protrusion extending downward into the longitudinal chamber 11, and the rear end of the second metal wire 32 is fixedly connected to the lower protrusion; the lower slider 22 has an upper protrusion extending upward into the longitudinal chamber 11, and the rear end of the first metal wire 31 is fixedly connected to the upper protrusion.

[0017] The above description is only to illustrate some principles of the urinary cavity pedicled new biological electrocoagulation and electroresection snare device of the utility model, and is not intended to limit the utility model to the specific structure and applicable scope shown and described. Therefore, all corresponding modifications and equivalents that may be used are within the scope of the patent applied for by the utility model.

Claims

1. A pedicled new biological electrocoagulation and electroresection snare device for urinary tract, characterized by: The invention comprises an operating handle (10), an upper slider (21), a lower slider (22), a first metal wire (31) and a second metal wire (32); the operating handle (10) has a longitudinal chamber (11) passing through its front end, and the upper slider (21) and the lower slider (22) are installed on the operating handle (10) through a longitudinal sliding structure; the main bodies of the first metal wire (31) and the second metal wire (32) are located in the longitudinal chamber (11), and their rear ends are respectively fixedly connected to the lower slider (22) and the upper slider (21); the front end of the first metal wire (31) is bent and welded to the main body of the first metal wire (31) to form a constraint ring (31a), and the main body of the first metal wire (31) passes through the constraint ring (31a) to form an electrocoagulation and electrocuting snare (31b) outside the front end surface of the operating handle (10); the front end of the second metal wire (32) is welded to the main body of the first metal wire (31) at a position adjacent to the constraint ring (31a).

2. A urinary tract pedicled bio-electrocoagulation and electroresection snare device as claimed in claim 1, characterized in that: The longitudinal sliding structure comprises an upper guide groove (12) and a lower guide groove (13) extending longitudinally and provided on the outer walls on both sides of the operating handle (10); the inner walls on both sides of the upper sliding block (21) have guide convex strips inserted into the upper guide groove (12), and the inner walls on both sides of the lower sliding block (22) have guide convex strips inserted into the lower guide groove (13).

3. A urinary tract pedicled bio-electrocoagulation and electroresection snare device as claimed in claim 2, characterized in that: The upper slider (21) has a lower convex portion extending downward into the longitudinal chamber (11), and the rear end of the second metal wire (32) is fixedly connected to the lower convex portion; the lower slider (22) has an upper convex portion extending upward into the longitudinal chamber (11), and the rear end of the first metal wire (31) is fixedly connected to the upper convex portion.

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