Radio frequency trocar clamping and fixing device

Abstract

The utility model provides a radio frequency trocar clamping and fixing device which comprises a base, the bottom end of the base is provided with a bonding piece, the top end of the base is provided with four connecting pieces, a connecting sleeve is fixedly connected among the four connecting pieces, the top of the connecting sleeve is connected with a conical sleeve, and the side face of the conical sleeve is provided with a strip-shaped open groove. Two clamping pieces are installed at the top of the inner wall of the conical sleeve, locking threads are formed in the surface of the conical sleeve, the connecting sleeve is sleeved with a locking nut, the base is bonded and fixed to the body surface of a patient through a bonding piece, and the nut is locked upwards and connected with the locking threads outside the conical sleeve; the outer wall of the radio frequency sleeve can be clamped and fixed through the clamping groove, the situation that the sleeve accidentally deepens in the operation process is avoided, the depth of the radio frequency sleeve can be conveniently observed through the cooperation of the observation groove and the scale marks, and the working efficiency of the radio frequency sleeve is improved. Therefore, the use of medical staff is more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical auxiliary equipment, and in particular relates to a radio frequency trocar clamping and fixing device. Background Art

[0002] Chronic pain is a common disease that seriously affects the quality of life of patients. With the development of science and technology, there are more and more treatments for chronic pain in recent years. The method of simple drug analgesia can no longer meet the needs of patients and adapt to the new medical model changes. Radiofrequency treatment technology has become one of the main methods for treating chronic pain because of its simple operation, safety, definite effect and few complications. It is also the most commonly used technology in pain department.

[0003] In radiofrequency treatment of various pain diseases, disposable radiofrequency trocars of various lengths are required. First, the radiofrequency trocar needs to be accurately placed in the target nerve area under the guidance of images, and then the needle core is removed and the radiofrequency electrode is placed. Through the connection with the radiofrequency machine, ultra-high frequency and high voltage radio waves are accurately output to act on the local tissue to achieve thermal coagulation, cutting or nerve regulation. However, during the operation, after the radiofrequency trocar has been placed in the precise position, the trocar may be placed deeper in the subsequent operation due to factors such as insufficient force control, which causes the position to deviate from the target point. After searching, it was found that the application number is "20172078 7109.3" discloses a "radio frequency ablation electrode needle fixing device", in which the handle of the radio frequency electrode needle is fixed by a second bolt, so that the position of the radio frequency sheath can be fixed to prevent the radio frequency sheath from being inserted deeper during operation. However, the above-mentioned fixing device still has certain shortcomings when used: the above-mentioned fixing device can only fix the electrode needle handle by the second bolt, but if the depth of the electrode needle inserted into the patient's body is not enough to make the handle located in the second sheath, the above-mentioned fixing device is not convenient for effectively fixing the electrode needle sheath, and the above-mentioned device is not convenient for observing the adjustment depth of the radio frequency sheath needle. Based on this, we propose a convenient-to-use radio frequency sheath needle fixing device. Utility Model Content

[0004] The utility model aims to provide a radio frequency trocar clamping and fixing device, aiming to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a radio frequency trocar clamping and fixing device, comprising a base, the base is an annular structure, the bottom end of the base is provided with an adhesive, the top of the base is equipped with four connecting parts, the connecting part is L-shaped, a connecting sleeve is fixedly connected between the four connecting parts, the top of the connecting sleeve is connected with a conical sleeve, the side of the conical sleeve is provided with a strip groove, two clamping parts are installed on the top of the inner wall of the conical sleeve, the surface of the conical sleeve is provided with a locking thread, the outer sleeve of the connecting sleeve is provided with a locking nut, the surface of the connecting sleeve is provided with an observation groove, and the surface of the connecting sleeve is provided with a scale line on one side of the observation groove.

[0006] As a preferred technical solution of the utility model, a limit retaining ring is installed on the surface of the connecting sleeve, the limit retaining ring is located at the bottom of the locking nut, and the inner circle thread of the locking nut matches the locking thread.

[0007] As a preferred technical solution of the utility model, a clamping groove is opened on the side of the clamping piece, the clamping piece is made of rubber, and two clamping pieces are symmetrically arranged with strip-shaped grooves.

[0008] As a preferred technical solution of the utility model, the central axes of the tapered sleeve, the connecting sleeve and the base are located on the same axis.

[0009] As a preferred technical solution of the utility model, the adhesive member is a medical double-sided adhesive, and a release paper is provided on the surface of the adhesive member.

[0010] As a preferred technical solution of the utility model, the base, the connecting piece, the tapered sleeve, the limit retaining ring and the locking nut are all made of plastic.

[0011] As a preferred technical solution of the utility model, the connecting sleeve is a tubular structure made of transparent acrylic.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: after the RF cannula needle is passed through the clamping groove and then through the connecting cannula and the base respectively, the RF cannula needle is placed in the patient's body, and the base is bonded and fixed to the patient's body surface by means of an adhesive; when fixing the RF cannula, the locking nut is advanced upward and connected to the locking thread on the outside of the conical sleeve, and then the conical sleeve drives the clamping piece to move inward through the provided strip groove, and then the outer wall of the RF cannula can be clamped and fixed through the clamping groove, thereby avoiding accidental deepening of the cannula during operation, and the provided observation groove cooperates with the scale line to facilitate observation of the depth of the RF cannula, making it more convenient for medical staff to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the conical sleeve in the utility model.

[0017] In the figure: 1. Base; 2. Adhesive part; 3. Connecting part; 4. Connecting sleeve; 5. Conical sleeve; 6. Strip slot; 7. Clamping part; 8. Locking thread; 9. Locking nut; 10. Observation slot; 11. Scale line; 12. Limit retaining ring; 13. Clamping slot; 14. Release paper. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 3 The utility model provides the following technical solutions: a radio frequency trocar clamping and fixing device, comprising a base 1, an adhesive member 2 is arranged at the bottom end of the base 1, four connecting members 3 are installed at the top end of the base 1, a connecting sleeve 4 is fixedly connected between the four connecting members 3, a conical sleeve 5 is connected to the top of the connecting sleeve 4, a strip groove 6 is arranged on the side of the conical sleeve 5, two clamping members 7 are installed on the top of the inner wall of the conical sleeve 5, a locking thread 8 is arranged on the surface of the conical sleeve 5, a locking nut 9 is arranged on the outer sleeve of the connecting sleeve 4, an observation groove 10 is arranged on the surface of the connecting sleeve 4, a scale line 11 is arranged on the surface of the connecting sleeve 4 on one side of the observation groove 10, and the central axis of the conical sleeve 5, the connecting sleeve 4 and the base 1 are located on the same axis.

[0020] In this embodiment, a limit retaining ring 12 is installed on the surface of the connecting sleeve 4 . The limit retaining ring 12 is located at the bottom of the locking nut 9 . The inner thread of the locking nut 9 matches the locking thread 8 .

[0021] Specifically, the limit ring 12 can limit the position of the locking nut 9, so that medical staff can quickly lift the locking nut 9. The locking nut 9 is connected to the locking thread 8, so that the conical sleeve 5 can drive the clamping part 7 to clamp and fix the outer wall of the RF sleeve.

[0022] In the present invention, a clamping groove 13 is provided on the side of the clamping member 7 , the clamping member 7 is made of rubber, and two clamping members 7 are symmetrically arranged with the strip-shaped groove 6 .

[0023] Specifically, the RF sleeve is inserted into the conical sleeve 5 through the two clamping grooves 13, and the conical sleeve 5 drives the clamping member 7 to move toward each other through the locking nut 9, so that the clamping grooves 13 can effectively clamp the outside of the RF sleeve.

[0024] In this embodiment, the adhesive member 2 is a medical double-sided adhesive tape, and a release paper 14 is provided on the surface of the adhesive member 2 .

[0025] Specifically, after tearing off the release paper 14 , the base 1 can be bonded to the patient's body surface through the adhesive 2 , so that the radio frequency sleeve can be effectively fixed in this way.

[0026] In this embodiment, the base 1, the connecting piece 3, the tapered sleeve 5, the limit retaining ring 12 and the locking nut 9 are all made of plastic.

[0027] Specifically, in this way, when a patient is given radiofrequency needle treatment under image guidance, the fixing device will not affect the imaging of the radiofrequency sleeve.

[0028] In this embodiment, the connecting sleeve 4 is a tubular structure made of transparent acrylic.

[0029] Specifically, the scale lines 11 provided in this manner make it easier for doctors to observe the depth of the radiofrequency cannula.

[0030] Working principle: Before performing radiofrequency treatment on the patient, firstly, the radiofrequency trocar is inserted into the patient's body through the clamping groove 13, through the conical sleeve 5, the connecting sleeve 4 and the base 1, and then the release paper 14 is torn off and the fixing device is fixed to the patient's body surface through the adhesive 2. Then, the radiofrequency trocar is placed at the target point under the guidance of the image. Then, the staff only needs to lift up the locking nut 9 and connect it with the locking thread 8, and then drive the clamping part 7 through the conical sleeve 5 and effectively fix the radiofrequency sleeve under the action of the clamping groove 13 to avoid the radiofrequency sleeve accidentally moving inward due to errors during operation. Insertion causes damage to nerves near the target point. Compared with the comparative documents, no matter how deep the RF cannula is inserted into the patient, the outside of the RF cannula can be effectively fixed, which improves the practicality of the device. After loosening the locking nut 9, the depth of the RF cannula can be conveniently adjusted through the set scale line 11. After the RF cannula is fixed, the needle core is pulled out and the electrode needle is inserted into the RF cannula, so that the target point can be effectively treated in this way. The fixing device as a whole does not contain metal material, so it will not affect imaging when used under image guidance. The device has a simple structure, is easy to use, and is worthy of popularization.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A radio frequency trocar clamping and fixing device, comprising a base (1), characterized in that: The bottom end of the base (1) is provided with an adhesive member (2), the top end of the base (1) is provided with four connecting members (3), a connecting sleeve (4) is fixedly connected between the four connecting members (3), the top of the connecting sleeve (4) is connected with a conical sleeve (5), the side of the conical sleeve (5) is provided with a strip groove (6), the top of the inner wall of the conical sleeve (5) is provided with two clamping members (7), the surface of the conical sleeve (5) is provided with a locking thread (8), the outer sleeve of the connecting sleeve (4) is provided with a locking nut (9), the surface of the connecting sleeve (4) is provided with an observation groove (10), and the surface of the connecting sleeve (4) is provided with a scale line (11) on one side of the observation groove (10).

2. The radio frequency trocar clamping and fixing device according to claim 1, characterized in that: A limit retaining ring (12) is installed on the surface of the connecting sleeve (4), and the limit retaining ring (12) is located at the bottom of the locking nut (9).

3. The radio frequency trocar clamping and fixing device according to claim 1, characterized in that: A clamping groove (13) is provided on the side of the clamping piece (7), and the clamping piece (7) is made of rubber.

4. The radio frequency trocar clamping and fixing device according to claim 1, characterized in that: The central axes of the conical sleeve (5), the connecting sleeve (4) and the base (1) are located on the same axis.

5. The radio frequency trocar clamping and fixing device according to claim 1, characterized in that: The adhesive component (2) is a medical double-sided adhesive, and a release paper (14) is provided on the surface of the adhesive component (2).

6. The radio frequency trocar clamping and fixing device according to claim 2, characterized in that: The base (1), the connecting piece (3), the conical sleeve (5), the limit retaining ring (12) and the locking nut (9) are all made of plastic.

7. The radio frequency trocar clamping and fixing device according to claim 1, characterized in that: The connecting sleeve (4) is a tubular structure made of transparent acrylic.

Images