CN219374901U - Tumor percutaneous radio frequency ablation electrode needle fixing device - Google Patents

Abstract

The utility model discloses a tumor percutaneous radiofrequency ablation electrode needle fixing device, comprising: a serpentine tube, an upper splint and a clamping clip. The inner end of the serpentine tube is fixedly installed with a connecting steel wire, the lower end of the serpentine tube is fixedly installed with a connecting part, the outer end of the connecting part is rotatably installed with a base, the upper splint is arranged on the lower side of the base, the lower end of the upper splint is fixedly installed with an upper rubber anti-slip pad, the right end of the upper splint is slidably installed with a threaded rod, and the outer end of the threaded rod is threaded with a fastening nut . The electrode needle fixation device for percutaneous radiofrequency ablation of tumors replaces the hand-held or crude fixation methods of medical staff, and provides medical staff with a reliable fixation, convenient operation, convenient and free use, low cost, practical, and reusable electrode needle fixation methods.

Description

An electrode needle fixing device for percutaneous radiofrequency ablation of tumors

technical field

The utility model relates to the medical related technical field, in particular to a tumor percutaneous radiofrequency ablation electrode needle fixing device.

Background technique

Percutaneous radiofrequency ablation of tumors is guided by imaging and uses radiofrequency thermal effects to induce tissue coagulation necrosis to achieve the purpose of resecting tumors. It has become a new hot spot in many palliative therapies. The main working principle of this technology is that the bullet emits medium and high frequency radio frequency waves to excite the tissue cells to undergo plasma oscillation, and the ions collide with each other to generate heat, which can reach 60-100°C, which can effectively and quickly kill local tumor cells, and at the same time coagulate the vascular tissue around the tumor to form a reaction zone, so that it cannot continue to supply blood to the tumor and is beneficial to prevent tumor metastasis. All radio frequency ablation is composed of five parts: electric generator, measurement and control unit, electrode needle, skin electrode and computer. Among them, the electrode needle needs to be: firstly inserted into the patient's body percutaneously under the guidance of ultrasound or CT, the front end is placed on the tumor site, and then connected to the radio frequency ablation device to start working to destroy the tumor, and finally the electrode needle is withdrawn after the treatment is completed.

In the above process, after percutaneous puncture, medical personnel need to scan CT to confirm whether the puncture is in place. At this time, medical personnel will leave the CT room, and the electrode needle needs to be kept fixed. When radiofrequency ablation starts, the electrode needle needs to be kept fixed throughout the whole process. The two items need to be fixed for half an hour to an hour. Currently, the measures taken by medical personnel are hand-held or crudely fixed, etc., and there is no special fixing device.

Contents of the invention

The purpose of this utility model is to provide an electrode needle fixing device for percutaneous radiofrequency ablation of tumors to solve the above-mentioned background technology that requires medical personnel to scan CT to confirm whether the puncture is in place after percutaneous puncture. At this time, medical personnel will leave the CT room, and the electrode needle needs to be kept fixed.

In order to achieve the above purpose, the utility model provides the following technical solutions: a tumor percutaneous radiofrequency ablation electrode needle fixing device, comprising:

A serpentine tube, the inner end of the serpentine tube is fixedly equipped with a connecting steel wire, the lower end of the serpentine tube is fixedly installed with a connecting part, and the outer end of the connecting part is rotatably installed with a base;

An upper splint, the upper splint is arranged on the lower side of the base, the lower end of the upper splint is fixedly equipped with an upper rubber anti-skid pad, the right end of the upper splint is slidably installed with a threaded rod, and the outer end of the threaded rod is threadedly connected with a fastening nut;

For clamping the clamp, the left end of the clamping clamp is provided with a torsion spring, the inner end of the torsion spring is fixedly installed with a connecting column, the lower end of the connecting column is fixedly installed at the upper end of the serpentine pipe, and the inner end of the clamping clamp is provided with a reinforcement groove.

Preferably, the inner end of the base is provided with a connecting groove, the connecting part is rotatably mounted on the inner end of the connecting groove, and the inner ends of the base and the connecting part are both threaded with fixing bolts.

Preferably, a pinch plate is fixedly installed on the left end of the clamping clip, and the inner end of the pinch plate is fixedly installed on the left end of the torsion spring.

Preferably, a lower splint is fixedly installed on the lower end of the threaded rod, and a lower rubber anti-skid pad is fixedly installed on the upper end of the lower splint.

Preferably, both the lower splint and the upper splint are arranged at the left end of the threaded rod, and the upper end of the threaded rod is fixedly installed at the lower end of the base.

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

1. It is equipped with serpentine tube, connecting steel wire, upper splint, threaded rod and fastening nut. The connecting steel wire is fixedly installed inside the serpentine tube. The serpentine tube and connecting steel wire can be bent or stretched according to the needs of use, which is convenient for adjustment, and the shape can be kept stable after adjustment.

2. Equipped with clamping clamp, pinching plate and torsion spring, pinch the pinching plate, the clamping clamp can be opened, then clamp the electrode needle to the inner end of the clamping clamp, release the pinching plate, and the torsion spring drives the clamping clamp to clamp, which is convenient for fixed clamping;

3. It is equipped with a base, a connecting part, a connecting groove and a fixing bolt. Unscrew the fixing bolt, and the connecting part can be rotated at the inner end of the connecting groove. The base is fixedly installed on the upper end of the threaded rod and remains stationary, which is convenient for clamping and fixing the adjustment angle.

Description of drawings

Fig. 1 is the schematic diagram of the cut-away structure of the utility model when viewed from the front;

Fig. 2 is the utility model side view structure diagram;

Fig. 3 is a schematic view of the front view structure of the utility model;

Fig. 4 is a top view structure diagram of the clamping clip of the present invention.

In the figure: 1, serpentine tube; 2, upper splint; 3, clamping grip; 4, connecting steel wire; 5, base; 6, connecting part; 7, connecting groove; 8, fixing bolt; 9, threaded rod; 10, fastening nut; 11, upper rubber anti-skid pad;

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figures 1-4, the utility model provides a technical solution: a tumor percutaneous radiofrequency ablation electrode needle fixing device, including a serpentine tube 1, an upper splint 2, a clamping grip 3, a connecting wire 4, a base 5, a connecting part 6, a connecting groove 7, a fixing bolt 8, a threaded rod 9, a fastening nut 10, an upper rubber anti-slip pad 11, a lower splint 12, a lower rubber anti-slip pad 13, a connecting column 14, a pinch plate 15, a torsion spring 16 and a reinforcement groove 17, as shown in Figures 1 and 2 As shown in FIG. 3 , when using the electrode needle fixing device for percutaneous radiofrequency ablation of tumors, select a suitable position, and put the lower splint 12 against the bottom of the CT bed, hospital bed or other suitable positions during use, and put the upper splint 2 against the top of the position. At this time, the lower rubber anti-slip pad 13 fixedly installed on the upper end of the lower splint 12 is located on the lower side of the fixed position, and the upper rubber anti-slip pad 11 fixedly installed on the lower end of the upper splint 2 is located on the upper side of the fixed position. The upper splint 2 and the lower splint 12 are made of plastic material as a whole , the upper splint 2 can slide up and down, wide 85mm, thick 12mm, except its own thickness, the maximum sliding distance up and down is 76mm, then turn the fastening nut 10, the fastening nut 10 rotates at the outer end of the threaded rod 9, then the fastening nut 10 rotates downwards, the fastening nut 10 pushes the upper splint 2 to move downwards at the outer end of the threaded rod 9, when the upper rubber anti-slip pad 11 and the lower rubber anti-slip pad 13 are tightly clamped in the use position, the rotation of the fastening nut 10 can be stopped;

As shown in Figure 1, Figure 2 and Figure 3, the base 5 is made of plastic as a whole, which is a cylinder with a diameter of 30 mm and a height of 40 mm. A serpentine tube 1 is arranged at the upper end of the base 5, and a connecting steel wire 4 is provided at the inner end of the serpentine tube 1. The overall straightening limit is 400 mm. In the case of bending, the displacement distance from the base 5 to the gripper 3 is generally about 350 mm. At this time, the stability is better. Stable shape;

As shown in Fig. 1, Fig. 2 and Fig. 3, when the fixed angle of the upper splint 2 and the lower splint 12 is quite different from the angle of the fixed tumor percutaneous radiofrequency ablation electrode needle, the rotatable angle of the serpentine tube 1 is limited. In order to improve the stability, the fixing bolt 8 can be unscrewed before clamping and use, and then the serpentine tube 1 is rotated. The connecting part 6 rotates at the inner end of the connecting groove 7. After moving to the required angle, the fixing bolt 8 is screwed to the inside of the base 5 and the connecting part 6 again, and it can be fixed firmly;

As shown in Figure 1, Figure 2 and Figure 4, the clamping clip 3 is arranged on the upper end of the serpentine tube 1 through the connecting column 14. The clamping clip 3 is made of plastic material as a whole, and the diameter of the radiofrequency ablation electrode needle for tumor percutaneous treatment is generally 10 mm, so the groove is designed as a trapezoidal structure, with a width of 5 mm at the bottom and 15 mm at the top. The groove is in the center of the clamping part, and the overall thickness of the clamping part is 25mm. When in use, pinch the pinch plate 15 inwardly, and the clamping pinch 3 opens. Then, the side of the electrode needle at the determined position is snapped into the clamping pinch 3, and then the pinch plate 15 is released. Under the elastic force of the torsion spring 16, the clamping pinch 3 is closed. A series of operations of the needle fixing device, the content not described in detail in this specification belongs to the prior art known to those skilled in the art.

The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be customized according to the instructions and the accompanying drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art.

Although the utility model has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, they can still modify the technical solutions described in the aforementioned embodiments, or perform equivalent replacements to some of the technical features. Within the spirit and principles of the utility model, any modifications, equivalent replacements, improvements, etc., should be included in the protection scope of the utility model.

Claims (5)

1. A tumor percutaneous radiofrequency ablation electrode needle fixation device, characterized in that: comprising: A serpentine tube (1), the inner end of the serpentine tube (1) is fixedly installed with a connecting steel wire (4), the lower end of the serpentine tube (1) is fixedly installed with a connecting part (6), and the outer end of the connecting part (6) is rotatably installed with a base (5); The upper splint (2), the upper splint (2) is arranged on the lower side of the base (5), the lower end of the upper splint (2) is fixedly installed with an upper rubber anti-skid pad (11), the right end of the upper splint (2) is slidably installed with a threaded rod (9), and the outer end of the threaded rod (9) is threaded with a fastening nut (10); The clamping clip (3), the left end of the clamping clip (3) is provided with a torsion spring (16), the inner end of the torsion spring (16) is fixedly installed with a connecting column (14), the lower end of the connecting column (14) is fixedly installed on the upper end of the serpentine pipe (1), and the inner end of the clamping clip (3) is provided with a reinforcement groove (17). 2. The electrode needle fixing device for percutaneous radiofrequency ablation of tumors according to claim 1, characterized in that: the inner end of the base (5) is provided with a connecting groove (7), the connecting part (6) is rotatably mounted on the inner end of the connecting groove (7), and the inner ends of the base (5) and the connecting part (6) are threadedly connected with a fixing bolt (8). 3. The electrode needle fixing device for percutaneous radiofrequency ablation of tumors according to claim 1, characterized in that: a pinch plate (15) is fixedly installed on the left end of the clamping gripper (3), and the inner end of the pinch plate (15) is fixedly installed on the left end of the torsion spring (16). 4. The electrode needle fixing device for percutaneous radiofrequency ablation of tumors according to claim 1, characterized in that: the lower end of the threaded rod (9) is fixedly equipped with a lower splint (12), and the upper end of the lower splint (12) is fixedly installed with a lower rubber anti-slip pad (13). 5. A tumor percutaneous radiofrequency ablation electrode needle fixing device according to claim 4, characterized in that: the lower splint (12) and the upper splint (2) are both arranged on the left end of the threaded rod (9), and the upper end of the threaded rod (9) is fixedly installed on the lower end of the base (5).