Telescopic radio frequency bending electrode device

Abstract

The utility model discloses a telescopic radio frequency bending electrode device, which comprises a puncture needle, a radio frequency electrode and a driving part, the radio frequency electrode is arranged in the puncture needle and comprises an electrode tip and an electrode wire, the joint of the electrode tip and the electrode wire in a natural state is arc-shaped, and the head end of the electrode tip is of a round blunt structure; the driving part comprises a shell, a transmission device is arranged in the shell, the transmission device is detachably connected with the shell, the tail of the shell is matched with the injector, the transmission device is connected with the tail end of the electrode wire, the transmission device can drive the electrode wire to stretch out and draw back and prevent the electrode wire from rotating, and the tail end of the electrode wire penetrates through and extends out of the driving part. The puncture accuracy can be improved, the straight puncture needle point facilitates puncture entry, the transmission device easily controls the entry depth of the electrode, the electrode is bent to be more easily attached to a treatment part, the telescopic electrode enables the needle core and the electrode to be combined into one, use is more convenient, the integration degree is high, and the failure rate is low.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a telescopic radio frequency bending electrode device. Background Art

[0002] Lumbar sympathetic ganglion radiofrequency analgesia is currently commonly used in clinical practice for pain-related diseases such as CRPS, phantom limb pain, cancer pain, and discogenic low back pain; and vasospasm diseases such as Raynaud's disease, thromboangiitis obliterans, diabetic peripheral neuropathy, lower limb ulcers, ischemic necrosis, and post-frostbite pain.

[0003] The lumbar sympathetic nerve trunk runs along the medial side of the psoas major muscle on each side of the lumbar vertebrae, obscured by the inferior vena cava on the right side and adjacent to the lateral side of the abdominal aorta on the left. The abdominal aorta, inferior vena cava, and other major blood vessels lie in front of the lumbar vertebrae. Curved electrodes allow them to follow the lateral edges of the vertebrae, avoiding puncture of major vessels. Previously, the needle core and electrode were separate, requiring the pillow core to be removed after puncture to insert the electrode. Retractable electrodes combine the needle core and electrode into one, making them more convenient. Utility Model Content

[0004] The utility model aims to provide a telescopic radio frequency curved electrode device, which can improve the puncture accuracy. The straight puncture needle tip is convenient for puncture entry, the transmission device can easily control the electrode insertion depth, the electrode bending can more easily fit the treatment site, and the telescopic electrode combines the needle core and the electrode into one, which is more convenient to use, has a high degree of integration, and a low failure rate.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The utility model discloses a telescopic radio frequency bending electrode device, comprising a puncture needle, a radio frequency electrode, and a driving part; the radio frequency electrode is arranged in the puncture needle, and the radio frequency electrode includes an electrode head and an electrode wire. The connection between the electrode head and the electrode wire is arc-shaped in a natural state, and the head end of the electrode head is a rounded blunt structure; the driving part includes a shell, and a transmission device is arranged in the shell. The transmission device is detachably connected to the shell, and the tail end of the shell is adapted to a syringe. The transmission device is fixedly connected to the tail end of the electrode wire. The transmission device can drive the electrode wire to telescopic movement and prevent the electrode wire from rotating. The tail end of the electrode wire penetrates and extends to the outside of the driving part.

[0007] Preferably, the transmission device includes an anti-rotation device, the bottom surface of the anti-rotation device is rotatably connected to the drive sleeve, the drive sleeve is coaxially inserted in the drive handle, the drive handle is rotatably connected to the shell, the drive sleeve is threadedly connected to the drive handle, and the anti-rotation device includes an anti-rotation block and an anti-rotation groove that are adapted to each other. The anti-rotation groove is fixed in the shell, and the top of the anti-rotation block is fixedly connected to the tail of the electrode wire. The tail end of the electrode wire passes through the anti-rotation block, the drive sleeve, and the drive handle in sequence and extends to the outside of the device.

[0008] Preferably, a detachable connecting positioning ring is provided on the outside of the bottom end of the shell, a sliding groove A is provided on the positioning ring, and a sliding ridge A is provided on the outside of the top end of the driving handle, and the sliding ridge A is adapted to the sliding groove A.

[0009] Preferably, a sliding groove B is provided on the bottom surface of the anti-rotation block, and a sliding ridge B is provided on the top surface of the drive sleeve, and the sliding ridge B is adapted to the sliding groove B.

[0010] Preferably, the anti-rotation block, the drive sleeve and the drive handle are coaxially arranged, the drive handle is provided with a threaded channel along the axial direction, the outer periphery of the drive sleeve is provided with threads, and the outer periphery of the drive sleeve is adapted to the threaded channel.

[0011] Preferably, the cross section of the anti-rotation block is polygonal, the anti-rotation block and the drive sleeve are both tubular structures, the hollow parts of the anti-rotation block and the drive sleeve constitute an electrode channel, and the electrode wire is arranged in the electrode channel.

[0012] Preferably, in the initial rotation state, the electrode head extends to the outside of the puncture needle.

[0013] Preferably, the angle between the electrode head and the axis direction of the electrode wire is about 25°.

[0014] Preferably, a metal braided layer is provided on the outside of the electrode wire.

[0015] Beneficial effects of the utility model:

[0016] 1. The utility model ensures that the needle tip is vertical during puncture through the extension and contraction of the electrode, thereby improving the puncture accuracy.

[0017] 2. The utility model controls the extension and contraction of the electrode by twisting, making it easier to control the penetration depth of the electrode.

[0018] 3. The curved electrode of the present invention can fit the body structure better after being extended, especially the lateral edge of the vertebral body, making it easier to implement medical treatment.

[0019] 4. The utility model has a high degree of integration and a low failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of the utility model in which the electrode is extended;

[0021] Figure 2 This is a structural diagram of the electrode in the retracted state of the utility model;

[0022] Figure 3 It is a cross-sectional view of the driving part of the utility model;

[0023] Figure 4 for Figure 3 Cross-sectional view in the direction of A;

[0024] Figure 5This is a schematic diagram of the radio frequency electrode head of the utility model.

[0025] In the figure: 1-puncture needle, 2-electrode head, 3-electrode wire, 4-metal braided layer, 5-housing, 6-anti-rotation block, 7-anti-rotation slide groove, 8-drive sleeve, 9-drive grip, 10-threaded channel, 11-sliding ridge A, 12-sliding groove A, 13-sliding ridge B, 14-sliding groove B, 15-electrode channel, 16-positioning ring. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings.

[0027] like Figures 1 to 5 As shown, the utility model includes a puncture needle 1, a radio frequency electrode, and a driving part; the radio frequency electrode is arranged in the puncture needle 1, and the radio frequency electrode includes an electrode head 2 and an electrode wire 3. The connection between the electrode head 2 and the electrode wire 3 in a natural state is arc-shaped, and the head end of the electrode head 2 is a rounded blunt structure; the driving part includes a shell 5, and a transmission device is provided in the shell 5. The transmission device is detachably connected to the shell 5, and the tail end of the shell 5 is adapted to a syringe. The transmission device is connected to the tail end of the electrode wire 3. The transmission device can drive the electrode wire 3 to telescopic movement and prevent the electrode wire 3 from rotating. The tail end of the electrode wire 3 passes through and extends to the outside of the driving part. The transmission device can select common power drive settings such as common electric drive and manual drive.

[0028] Because the device acts on important parts of the human body, in order to prevent the electrode head 2 from accidentally moving and causing damage to the patient's body, the transmission device includes an anti-rotation device. The bottom surface of the anti-rotation device is rotatably connected to the drive sleeve 8, and the drive sleeve 8 is coaxially inserted in the drive handle 9. The drive handle 9 is rotatably connected to the shell 5. The drive sleeve 8 is threadedly connected to the drive handle 9. The anti-rotation device includes an anti-rotation block 6 and an anti-rotation groove 7 that are adapted to each other. The anti-rotation groove 7 is fixed in the shell 5. The top of the anti-rotation block 6 is fixedly connected to the tail of the electrode wire 3. The tail end of the electrode wire 3 passes through the anti-rotation block 6, the drive sleeve 8, and the drive handle 9 in sequence and extends to the outside of the device.

[0029] In order to ensure that the electrode wire 3 has a certain elasticity and structural strength, a metal braided layer 4 is provided on the outside of the electrode wire 3 .

[0030] In order to realize the coaxial rotation of the shell 5 and the driving handle 9 and realize the detachable structure of the transmission device, the bottom end of the shell 5 is detachably connected to the positioning ring 16 through a threaded structure, and the positioning ring 16 is provided with a sliding groove A12. The top end of the driving handle 9 is provided with a sliding ridge A11, and the sliding ridge A11 is adapted to the sliding groove A12.

[0031] In order to enable the anti-rotation block 6 to slide up and down without rotating, a sliding groove B14 is provided on the bottom surface of the anti-rotation block 6, and a sliding ridge B13 is provided on the top surface of the driving sleeve 8, and the sliding ridge B13 is adapted to the sliding groove B14.

[0032] In order to realize the threaded transmission function of the drive sleeve 8 and the drive handle 9, the anti-rotation block 6, the drive sleeve 8 and the drive handle 9 are coaxially arranged, the drive handle 9 is axially provided with a threaded channel 10, the outer periphery of the drive sleeve 8 is provided with threads, and the outer periphery of the drive sleeve 8 is adapted to the threaded channel 10.

[0033] In order to ensure that the anti-rotation block 6 only slides up and down without rotating, the cross-section of the anti-rotation block 6 is polygonal, and the anti-rotation block 6 and the drive sleeve 8 are both tubular structures. The hollow parts of the anti-rotation block 6 and the drive sleeve 8 constitute an electrode channel 15, and the electrode wire 3 is arranged in the electrode channel 15.

[0034] In order to facilitate the user to check the electrode status, in the initial state, the electrode head 2 extends to the outside of the puncture needle 1.

[0035] In order to better fit the human body structure after the electrode head 2 is extended, the angle formed by the axis direction of the electrode head 2 and the electrode wire 3 is 25°.

[0036] During actual use, the user checks the electrode head 2, screws the driving handle 9, drives the anti-rotation block 6 to descend, and then retracts the electrode wire 3, retracts the electrode head 2 into the puncture needle 1, and after the electrode wire 3 is retracted into the puncture needle 1, it remains in a straight state consistent with the puncture needle 1, which facilitates subsequent puncture operations;

[0037] After the user uses the puncture needle 1 to puncture the patient's treatment area, he can rotate the driving handle 9 to drive the anti-rotation block 6 to rise and then push the electrode wire 3 and the electrode head 2 out. After the electrode head 2 is extended from the puncture needle 1, it returns to the bent state with the electrode wire 3. Under further pressure from the human body structure, the electrode head 2 is more likely to fit the human body structure for treatment operation;

[0038] After the radiofrequency analgesic treatment, screw the drive handle 9, retract the electrode head 2, loosen the positioning ring 16, remove the transmission device and radiofrequency electrode from the puncture needle 1, use a syringe to connect the tail end of the shell 5, and inject the corresponding medicine into the treatment area through the puncture needle 1 to complete the analgesic treatment.

[0039] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A telescopic radio frequency bending electrode device, characterized in that: It includes a puncture needle (1), a radiofrequency electrode, and a driving unit; The radio frequency electrode is arranged in the puncture needle (1), and comprises an electrode head (2) and an electrode wire (3). In a natural state, the connection between the electrode head (2) and the electrode wire (3) is arc-shaped, and the end of the electrode head (2) is a rounded blunt structure. The driving part includes a shell (5), a transmission device is provided in the shell (5), the transmission device is detachably connected to the shell (5), the tail of the shell (5) is adapted to fit a syringe, the transmission device is fixedly connected to the tail end of the electrode wire (3), the transmission device can drive the electrode wire (3) to telescopic movement and prevent the electrode wire (3) from rotating, and the tail end of the electrode wire (3) penetrates and extends to the outside of the driving part.

2. The electrode device according to claim 1, characterized in that: The transmission device includes an anti-rotation device, the bottom surface of the anti-rotation device is rotatably connected to a driving sleeve (8), the driving sleeve (8) is coaxially inserted in a driving handle (9), the driving handle (9) is rotatably connected to a housing (5), the driving sleeve (8) and the driving handle (9) are threadedly connected, the anti-rotation device includes an anti-rotation block (6) and an anti-rotation slide (7) that are adapted to each other, the anti-rotation slide (7) is fixed in the housing (5), the top end of the anti-rotation block (6) is fixedly connected to the tail end of the electrode wire (3), and the tail end of the electrode wire (3) passes through the anti-rotation block (6), the driving sleeve (8), and the driving handle (9) in sequence and extends to the outside of the device.

3. The electrode device according to claim 2, characterized in that: A detachable connecting positioning ring (16) is provided on the outside of the bottom end of the housing (5), and a sliding groove A (12) is provided on the positioning ring (16). A sliding ridge A (11) is provided on the outside of the top end of the driving handle (9), and the sliding ridge A (11) is adapted to the sliding groove A (12).

4. The electrode device according to claim 2, characterized in that: The bottom surface of the anti-rotation block (6) is provided with a sliding groove B (14), and the top surface of the driving sleeve (8) is provided with a sliding ridge B (13), and the sliding ridge B (13) is adapted to the sliding groove B (14).

5. The electrode device according to claim 2, characterized in that: The anti-rotation block (6), the driving sleeve (8), and the driving handle (9) are coaxially arranged. The driving handle (9) is provided with a threaded channel (10) in the axial direction. The outer periphery of the driving sleeve (8) is provided with threads. The outer periphery of the driving sleeve (8) is adapted to the threaded channel (10).

6. The electrode device according to claim 5, characterized in that: The anti-rotation block (6) has a polygonal cross section. The anti-rotation block (6) and the driving sleeve (8) are both tubular structures. The hollow parts of the anti-rotation block (6) and the driving sleeve (8) form an electrode channel (15), and the electrode wire (3) is arranged in the electrode channel (15).

7. The electrode device according to claim 1, characterized in that: In the initial rotation state, the electrode head (2) extends to the outside of the puncture needle (1).

8. The electrode device according to claim 1, wherein: The angle formed between the electrode head (2) and the axis direction of the electrode wire (3) is approximately 25°.

9. The electrode device according to claim 1, characterized in that: A metal braided layer (4) is provided outside the electrode wire (3).

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