Radiofrequency ablation anal fistula electrode probe pen with light source

Abstract

The invention relates to a radiofrequency ablation anal fistula electrode probe pen with a light source, and belongs to the field of medical instruments, the radiofrequency ablation anal fistula electrode probe pen comprises a handle, a probe rod and an electrode assembly, one end of the probe rod is connected with the handle, the electrode assembly comprises a controller and an electrode tip, the electrode tip is located at the end, away from the handle, of the probe rod, and the controller is located on the handle; the device further comprises a light source mechanism, the light source mechanism comprises a searchlight head, and the searchlight head is located at the end, away from the handle, of the feeler lever. After the feeler lever is inserted into the fistulous tract, the light source mechanism is started, the searchlight head emits light, an operator can indirectly judge the approximate position of the end of the feeler lever in the fistulous tract from the outside according to the skin light transmission condition, and the surgical treatment precision is improved.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to an electrode probe with a light source for radiofrequency ablation of anal fistula. Background Art

[0002] Anal fistula is a common anorectal disease, mainly caused by infectious abscesses around the rectum and anal canal. Its main feature is the formation of a chronic infection channel between the anus or rectum and the perineal skin, which is mainly composed of three parts: the internal opening, the fistula, and the external opening.

[0003] At present, in the treatment of anal fistula, traditional treatment methods mainly include conservative drug treatment and surgical treatment. Although these methods can relieve symptoms to a certain extent, they are difficult to meet clinical needs due to problems such as high recurrence rate and large trauma. In recent years, with the development of radiofrequency ablation technology, more and more researchers have begun to explore its application in the treatment of anal fistula. As a minimally invasive technology, radiofrequency ablation has the characteristics of less bleeding and faster recovery, and has gradually become a new choice for the treatment of anal fistula.

[0004] The current anal fistula electrode treatment device is an electrode probe pen. After the probe pen is inserted, the distance between the electrode head and the fistula tract cannot be intuitively felt, thus affecting the surgical effect. Summary of the invention

[0005] In order to improve the above problems, the present application provides an anal fistula electrode probe with a light source for radiofrequency ablation.

[0006] The present application provides an anal fistula ablation electrode probe with a light source, which adopts the following technical solution: A radiofrequency ablation anal fistula electrode probe with a light source comprises a handle, a probe rod and an electrode assembly, one end of the probe rod is connected to the handle, the electrode assembly comprises a controller and an electrode head, the electrode head is located at the end of the probe rod away from the handle, the controller is located on the handle, the controller and the electrode head are electrically connected, and also comprises a light source mechanism, the light source mechanism comprises a searchlight head, and the searchlight head is located at the end of the probe rod away from the handle.

[0007] By adopting the above technical solution, after the probe is inserted into the fistula, the light source mechanism is turned on, and the searchlight head emits light. The operator can indirectly judge the approximate position of the probe end in the fistula through the light transmittance of the skin from the outside, thereby improving the accuracy of surgical treatment.

[0008] Preferably, the probe rod is tubular, the light source mechanism includes an adjustment component, the electrode head and the probe rod are relatively fixed, the searchlight head is located on the probe rod and slides relative to the probe rod, the sliding direction is the length direction of the probe rod, and the adjustment component is used to control the sliding of the searchlight head.

[0009] By adopting the above technical solution, when the electrode head is in working state, the searchlight head can be moved away from the electrode head by adjusting the assembly. After the two are separated, the heat generated during the working process of the electrode head is not easily transferred to the searchlight head, which plays a certain protective role on the structure of the searchlight head.

[0010] Preferably, the light source mechanism also includes a light emitting diode and a connecting optical fiber, the adjustment component includes an adjusting slider and a mounting block, the mounting block is located in the handle, the adjusting slider is located on the outer surface of the handle and is slidably connected to the handle, the adjusting slider is fixedly connected to the mounting block, the light emitting diode is fixedly mounted on the mounting block, one end of the connecting optical fiber is fixedly connected to the light emitting diode, and the other end passes through the probe rod and is fixedly connected to the searchlight head.

[0011] By adopting the above technical solution, the light of the light emitting diode is transmitted to the searchlight head through the connecting optical fiber, so that the searchlight head can perform lighting work.

[0012] Preferably, the probe rod includes an insulating tube and a metal spring tube, the insulating tube is coaxially sleeved outside the metal spring tube and the two are fixedly connected, the electrode head is annular and coaxially fixedly connected to the end of the metal spring tube, and the searchlight head and the connecting optical fiber are both located on the inner side of the electrode head and the metal spring tube.

[0013] By adopting the above technical solution, the metal spring tube can conduct electricity, and the controller transmits current to the electrode head through the metal spring tube, so that it can work. At the same time, the probe rod has a certain axial hardness and elastic deformation ability.

[0014] Preferably, the controller includes a circuit board and a start button, the circuit board and the handle are fixedly connected, the circuit board and the electrode head are electrically connected, the start button is located outside the handle and is slidably connected to the handle, the start button is fixedly connected to a power contact rod on the side facing the circuit board, when the power contact rod contacts the circuit board, the circuit board transmits current to the electrode head, a start spring is connected between the start button and the handle, and in a natural state, there is a gap between the power contact rod and the circuit board.

[0015] By adopting the above technical solution, the operator needs to continuously press the start button, and when the electric contact rod contacts the circuit board, the circuit board transmits current to the electrode head.

[0016] Preferably, the light source mechanism further comprises a passive component, and the passive component is used to apply a thrust to the adjusting slider or the mounting block away from the searchlight head when the electrical contact rod contacts the circuit board.

[0017] By adopting the above technical solution, under the action of the passive component, when the operator presses the start button and the electrode assembly starts working, the adjusting slider or the mounting block is forced to move back to its position, and the searchlight head is moved by the pulling force and leaves the electrode head without manual force.

[0018] Preferably, the passive component includes a reset spring and a temporary locking piece, one end of the reset spring is connected to the handle, and the other end is connected to the mounting block, the expansion and contraction direction of the reset spring is consistent with the sliding direction of the mounting block, and in a natural state, the mounting block and the adjusting slider are located at a position away from one end of the electrode head in their own sliding stroke, and the temporary locking piece is used to relatively fix the adjusting slider and the handle when the adjusting slider is located at a position close to one end of the electrode head in its own sliding stroke.

[0019] By adopting the above technical solution, the reset spring provides power for the automatic return of the adjusting slider and the mounting block, and under the working condition that the searchlight head needs to be kept extending out of the end of the probe rod, the temporary locking piece is used to make the mounting block stable and stationary relative to the handle.

[0020] Preferably, the adjusting slider and the mounting block are respectively located at opposite sides of the circuit board, and a synchronization rod is fixedly connected between the adjusting slider and the mounting block, and a waist-shaped hole for the synchronization rod to pass through is opened on the circuit board, and the temporary locking piece is a locking cantilever, one end of the locking cantilever is fixedly connected to the mounting block, and the other end is integrally formed with a locking protrusion, and the locking protrusion abuts against the board surface of the circuit board, and a locking hole is opened on the circuit board, and the hole axis of the locking hole is perpendicular to the sliding direction of the mounting block, and when the mounting block and the adjusting slider are located at a position away from one end of the electrode head in their own sliding stroke, the locking protrusion is inserted into the locking hole, and a follow-up push rod is connected to the start button, and the follow-up push rod is opposite to the locking hole, and when the end of the electric contact rod abuts against the circuit board, the follow-up push rod pushes the locking protrusion out of the locking hole.

[0021] By adopting the above technical solution, when the locking protrusion is inserted into the locking hole, the hole wall of the locking hole has a lateral abutment force on the locking protrusion, and the locking protrusion, the locking cantilever and the mounting block cannot move. When the start button is pressed and moved, the follower push rod can be inserted into the locking hole to push the locking protrusion out to release the limit of the temporary locking piece, and the mounting block and the adjustment slider can move.

[0022] Preferably, the start button includes a main body and a follower part, the follower part is located on one side of the main body, the follower top rod is connected to the follower part, the power contact rod is connected to the main body, and a follower step is fixedly connected to the side of the follower part facing the main body, and the follower step is located on the side of the main body facing the circuit board.

[0023] By adopting the above technical solution, the operator can release the limit on the adjusting slider by pressing the follower part, and can also release the limit on the adjusting slider while starting the electrode assembly by pressing the main body.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the setting of the light source mechanism, after the probe is inserted into the fistula, the light source mechanism is turned on, and the searchlight head emits light. The operator can indirectly judge the approximate position of the probe end in the fistula from the outside through the light transmission of the skin, thereby improving the accuracy of surgical treatment; 2. By adjusting the setting of the component, when the electrode head is in working state, the searchlight head can be moved away from the electrode head by adjusting the component. After the two are separated, the heat generated during the working process of the electrode head is not easily transferred to the searchlight head, which plays a certain protective role on the structure of the searchlight head. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of an electrode probe pen with a light source for radiofrequency ablation of anal fistula in Example 1 of the present application.

[0026] Figure 2 It is a schematic cross-sectional view of the structure inside the handle in the first embodiment of the present application.

[0027] Figure 3 It is a schematic cross-sectional view of the structure used to illustrate the end of the probe rod in the first embodiment of the present application.

[0028] Figure 4 It is a schematic cross-sectional view of the structure inside the handle in the second embodiment of the present application.

[0029] Explanation of the reference numerals: 1. handle; 2. probe rod; 21. insulating tube; 22. metal spring tube; 3. electrode assembly; 31. electrode head; 32. circuit board; 321. waist-shaped hole; 322. locking hole; 33. start button; 331. follower; 332. main body; 333. follower step; 34. electric contact rod; 35. starting spring; 36. follower top rod; 4. light source mechanism; 41. searchlight head; 42. light emitting diode; 43. connecting optical fiber; 44. adjusting slider; 45. mounting block; 46. synchronization rod; 47. passive assembly; 471. reset spring; 472. temporary locking piece; 4721. locking cantilever; 4722. locking protrusion. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-4 This application is described in further detail.

[0031] Embodiment 1: The present application embodiment discloses an electrode probe pen with a light source for radiofrequency ablation of anal fistula, such as Figure 1 and 2 As shown, it includes a handle 1, a probe rod 2, an electrode assembly 3 and a light source mechanism 4. One end of the probe rod 2 is fixedly connected to the handle 1, and the other end is used to extend into the fistula tract of the patient; the electrode assembly 3 is used to perform radiofrequency ablation, and the light source mechanism 4 is used to make the end of the probe rod 2 emit light.

[0032] like Figure 1 and 2 As shown, the electrode assembly 3 includes a controller and an electrode head 31. The electrode head 31 is located at one end of the probe rod 2 away from the handle 1, and the controller is on the handle 1. The probe rod 2 and the electrode head 31 are both tubular. The probe rod 2 includes an insulating tube 21 and a metal spring tube 22. The insulating tube 21 is coaxially sleeved outside the metal spring tube 22 and the two are fixedly connected. The insulating tube 21 is made of rubber, so that the probe rod 2 has a certain axial hardness and elastic deformation ability. The electrode head 31 and the end of the insulating tube 21 are coaxially fixedly connected, and the electrode head 31 is also fixedly connected to the metal spring tube 22. The controller includes a circuit board 32 and a start button 33. The circuit board 32 is fixedly connected to the handle 1. The circuit board 32 and the start button 33 are both externally connected to a power supply (not shown in the figure). A metal clamp is fixedly connected to the circuit board 32. The metal clamp is sleeved outside the metal spring tube 22. The circuit board 32 is electrically connected to the electrode head 31 through the metal spring tube 22. The start button 33 is located outside the handle 1 and is slidably connected to the handle 1. A power contact rod 34 is fixedly connected to the side of the start button 33 facing the circuit board 32. In a natural state, there is a gap between the power contact rod 34 and the circuit board 32. When the start button 33 is continuously pressed and the power contact rod 34 contacts the circuit board 32, the circuit board 32 transmits current to the electrode head 31.

[0033] like Figure 1 , 2 As shown in FIG. 3 , the light source mechanism 4 includes a searchlight head 41, a light emitting diode 42 and a connecting optical fiber 43. The light emitting diode 42 is located in the handle 1 and is connected to an external power source (not shown in the figure). The searchlight head 41 is located at the end of the probe 2 and inside the electrode head 31. The connecting optical fiber 43 passes through the metal spring tube 22, one end of which is fixedly connected to the light emitting diode 42, and the other end passes through the probe 2 and is fixedly connected to the searchlight head 41, that is, when the light emitting diode 42 is turned on, the light is transmitted to the searchlight head 41 through the connecting optical fiber 43, and finally the end of the probe 2 emits light.

[0034] like Figure 1 and 2As shown, the light source mechanism 4 also includes an adjustment component, which is used to control the searchlight head 41 to slide along the probe rod 2. The adjustment component includes an adjustment slider 44 and a mounting block 45. The mounting block 45 is located in the handle 1. The adjustment slider 44 is located on the outer surface of the handle 1 and is slidably connected to the handle 1. The sliding direction is consistent with the length direction of the connecting optical fiber 43 in the handle 1. The light-emitting diode 42 is fixedly mounted on the mounting block 45. The adjustment slider 44 and the mounting block 45 are respectively located on opposite sides of the circuit board 32. A synchronization rod 46 is fixedly connected between the adjustment slider 44 and the mounting block 45. The length direction of the synchronization rod 46 is perpendicular to the sliding direction of the adjustment slider 44. A waist-shaped hole 321 for the synchronization rod 46 to pass through is opened on the circuit board 32. The length direction of the waist-shaped hole 321 is consistent with the sliding direction of the adjustment slider 44. There is friction between the adjustment slider 44 and the handle 1, and the operator needs to actively apply thrust to the adjustment slider 44, so that the adjustment slider 44 and the mounting block 45 can move within their own travel range, and the mounting block 45 applies thrust or pulling force to the connecting optical fiber 43, thereby driving the searchlight head 41 to move. When the adjustment slider 44 is located at a position close to one end of the electrode head 31 in its own sliding stroke, the searchlight head 41 is located at a position flush with the electrode head 31, and the light it emits can be radiated to the side of the probe rod 2, and when the adjustment slider 44 is located at a position far away from one end of the electrode head 31 in its own sliding stroke, the searchlight head 41 retracts into the metal spring tube 22 and does not contact the electrode head 31.

[0035] The implementation principle of the anal fistula electrode probe with a light source for radiofrequency ablation in the present application is as follows: Before performing electrode ablation, first position the searchlight head 41 at the electrode head 31, insert the probe rod 2 into the fistula, and determine the position of the end of the probe rod 2 by the light transmission position. When the end of the probe rod 2 is located at the end of the fistula, move the adjustment slider 44 to retract the searchlight head 41, and press the start button 33 to perform the electrode ablation operation.

[0036] Embodiment 2: like Figure 4 As shown, since the action of moving the adjustment slider 44 causes the handle 1 to also be subjected to the push-pull force from the operator, the depth position of the probe rod 2 will also be affected to a certain extent. Therefore, based on the first embodiment, the light source mechanism 4 also includes a passive component 47. The passive component 47 is used to apply a thrust away from the searchlight head 41 to the adjustment slider 44 or the mounting block 45 based on the handle 1 when the contact rod 34 and the circuit board 32 are in contact. The passive component 47 includes a reset spring 471 and a temporary locking member 472. The reset spring 471 is located in the handle 1, one end of which is connected to the handle 1, and the other end is connected to the mounting block 45. The expansion and contraction direction of the reset spring 471 is consistent with the sliding direction of the mounting block 45. In a natural state, the mounting block 45 and the adjustment slider 44 are located in their own sliding stroke away from one end of the electrode head 31.

[0037] like Figure 4 As shown, the temporary locking piece 472 is used to relatively fix the adjusting slider 44 and the handle 1 when the adjusting slider 44 is located in a position close to one end of the electrode head 31 in its own sliding stroke. The temporary locking piece 472 is a locking cantilever 4721. The length direction of the locking cantilever 4721 is consistent with the moving direction of the adjusting slider 44. One end of the locking cantilever 4721 is fixedly connected to the mounting block 45 and is located on the side of the synchronization rod 46 away from the electrode head 31, and the other end is integrally formed with a locking protrusion 4722. The locking cantilever 4721 is located on the side of the circuit board 32 facing the mounting block 45, the locking protrusion 4722 abuts against the board surface of the circuit board 32, and the locking cantilever 4721 itself has a certain deflection; a locking hole 322 is provided on the circuit board 32, and the hole axis of the locking hole 322 is perpendicular to the sliding direction of the mounting block 45. When the mounting block 45 and the adjusting slider 44 are located at a position away from one end of the electrode head 31 in their own sliding stroke, the locking protrusion 4722 is inserted into the locking hole 322. At this time, the hole wall of the locking hole 322 has a lateral abutment force on the locking protrusion 4722, and the locking protrusion 4722 and the locking cantilever 4721 cannot move. The synchronization rod 46, the adjusting slider 44, and the mounting block 45 are all fixed relative to the handle 1, and the reset spring 471 is in a compressed state.

[0038] like Figure 4 As shown, the start button 33 is located on the side of the adjustment slider 44 away from the probe rod 2. The start button 33 includes a main body 332 and a follower 331. The follower 331 is located on the side of the main body 332 close to the adjustment slider 44. The follower 331 and the main body 332 are respectively connected to the handle 1 in a sliding manner, and the follower and the main body 332 are respectively connected to independent start springs 35. The contact rod 34 is fixedly connected to the main body 332. A follower step 333 is fixedly connected to the side of the follower 331 facing the main body 332. The follower step 333 is located on the side of the main body 332 facing the circuit board 32, that is, the follower 331 can be pressed and moved alone, and can also be pushed by the main body 332 and move synchronously when the main body 332 is pressed. A follower push rod 36 is fixedly connected to the side of the follower part 331 facing the circuit board 32. The length direction of the follower push rod 36 is consistent with the moving direction of the follower part 331. The follower push rod 36 is opposite to the locking hole 322 and presses the main body 332. When the end of the electric contact rod 34 abuts against the circuit board 32, the movable push rod pushes the locking protrusion 4722 out of the locking hole 322. The hole wall of the locking hole 322 loses its limit restriction on the locking protrusion 4722. Under the action of the reset spring 471, the mounting block 45 and the adjusting slider 44 rebound naturally.

[0039] The implementation principle of the anal fistula electrode probe with a light source for radiofrequency ablation in the present application is as follows: During use, the operator can release the limit on the adjusting slider 44 by pressing the follower part 331, or by pressing the main body 332 to release the limit on the adjusting slider 44 while starting the electrode assembly 3. The adjusting slider 44, the mounting block 45, and the searchlight head 41 can all return to their original positions automatically without manual force.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An electrode probe pen for radiofrequency ablation of anal fistula with a light source, comprising a handle (1), a probe rod (2) and an electrode assembly (3), wherein one end of the probe rod (2) is connected to the handle (1), and the electrode assembly (3) comprises a controller and an electrode head (31), wherein the electrode head (31) is located at an end of the probe rod (2) away from the handle (1), and the controller is located on the handle (1), and the controller and the electrode head (31) are electrically connected, characterized in that: It also comprises a light source mechanism (4), wherein the light source mechanism (4) comprises a searchlight head (41), and the searchlight head (41) is located at an end of the probe rod (2) away from the handle (1).

2. The anal fistula ablation electrode probe with a light source according to claim 1, characterized in that: The probe rod (2) is tubular, the light source mechanism (4) comprises an adjustment component, the electrode head (31) and the probe rod (2) are relatively fixed, the searchlight head (41) is located on the probe rod (2) and slides relatively, the sliding direction is the length direction of the probe rod (2), and the adjustment component is used to control the sliding of the searchlight head (41).

3. The anal fistula ablation electrode probe with a light source according to claim 2, characterized in that: The light source mechanism (4) further comprises a light emitting diode (42) and a connecting optical fiber (43); the adjusting assembly comprises an adjusting slider (44) and a mounting block (45); the mounting block (45) is located in the handle (1); the adjusting slider (44) is located on the outer surface of the handle (1) and is slidably connected to the handle (1); the adjusting slider (44) and the mounting block (45) are fixedly connected; the light emitting diode (42) is fixedly mounted on the mounting block (45); one end of the connecting optical fiber (43) is fixedly connected to the light emitting diode (42); the other end passes through the probe rod (2) and is fixedly connected to the searchlight head (41).

4. The anal fistula ablation electrode probe with a light source according to claim 3, characterized in that: The probe rod (2) comprises an insulating tube (21) and a metal spring tube (22); the insulating tube (21) is coaxially sleeved outside the metal spring tube (22) and the two are fixedly connected; the electrode head (31) is annular and coaxially fixedly connected to the end of the metal spring tube (22); the searchlight head (41) and the connecting optical fiber (43) are both located on the inner side of the electrode head (31) and the metal spring tube (22).

5. The anal fistula ablation electrode probe with a light source according to claim 3 or 4, characterized in that: The controller comprises a circuit board (32) and a start button (33); the circuit board (32) and the handle (1) are fixedly connected; the circuit board (32) and the electrode head (31) are electrically connected; the start button (33) is located outside the handle (1) and is slidably connected to the handle (1); a power contact rod (34) is fixedly connected to the side of the start button (33) facing the circuit board (32); when the power contact rod (34) and the circuit board (32) are in contact, the circuit board (32) transmits current to the electrode head (31); a start spring (35) is connected between the start button (33) and the handle (1); and in a natural state, a gap exists between the power contact rod (34) and the circuit board (32).

6. The anal fistula ablation electrode probe with a light source according to claim 5, characterized in that: The light source mechanism (4) further comprises a passive component (47), wherein the passive component (47) is used to apply a thrust force away from the searchlight head (41) to the adjusting slide block (44) or the mounting block (45) when the electrical contact rod (34) and the circuit board (32) are in contact.

7. The electrode probe pen with a light source for radiofrequency ablation of anal fistula according to claim 6, characterized in that: The passive component (47) includes a reset spring (471) and a temporary locking member (472). One end of the reset spring (471) is connected to the handle (1), and the other end is connected to the mounting block (45). The extension and contraction direction of the reset spring (471) is consistent with the sliding direction of the mounting block (45). In a natural state, the mounting block (45) and the adjusting slider (44) are located at a position away from one end of the electrode head (31) in their own sliding stroke. The temporary locking member (472) is used to relatively fix the adjusting slider (44) and the handle (1) when the adjusting slider (44) is located at a position close to one end of the electrode head (31) in its own sliding stroke.

8. The anal fistula ablation electrode probe with a light source according to claim 7, characterized in that: The adjusting slider (44) and the mounting block (45) are respectively located on opposite sides of the circuit board (32); a synchronization rod (46) is fixedly connected between the adjusting slider (44) and the mounting block (45); a waist-shaped hole (321) for the synchronization rod (46) to pass through is provided on the circuit board (32); the temporary locking member (472) is a locking cantilever (4721); one end of the locking cantilever (4721) is fixedly connected to the mounting block (45); and the other end is integrally formed with a locking protrusion (4722); the locking protrusion (4722) abuts against the board surface of the circuit board (32); and the circuit board (32) is provided with a locking protrusion (4722). A locking hole (322) is provided, wherein the axis of the locking hole (322) is perpendicular to the sliding direction of the mounting block (45); when the mounting block (45) and the adjusting slider (44) are located at a position away from one end of the electrode head (31) in their own sliding stroke, the locking protrusion (4722) is inserted into the locking hole (322); a follower push rod (36) is connected to the start button (33), and the follower push rod (36) is opposite to the locking hole (322); when the end of the contact rod (34) abuts against the circuit board (32), the follower push rod (36) pushes the locking protrusion (4722) out of the locking hole (322).

9. The anal fistula ablation electrode probe with a light source according to claim 8, characterized in that: The start button (33) comprises a main body (332) and a follower (331), wherein the follower (331) is located on one side of the main body (332), the follower top rod (36) is connected to the follower (331), the electrical contact rod (34) is connected to the main body (332), a follower step (333) is fixedly connected to one side of the follower (331) facing the main body (332), and the follower step (333) is located on the side of the main body (332) facing the circuit board (32).

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