Electrode device, electrode release device and detrusor muscle contraction stimulation system

Abstract

This utility model relates to an electrode device, an electrode release device, and a detrusor muscle contraction stimulation system, belonging to the technical field of medical devices. The electrode device includes an electrode with multiple electrode contacts. Both ends of the electrode are provided with multiple barbed components for fixing the electrode to the bladder wall. Each barbed component is separated from the electrode on the side closest to the electrode end. This utility model allows for precise stimulation of the bladder wall by simply implanting the electrode device into the patient's bladder wall when detrusor muscle contraction stimulation is needed. The barbed components reduce the possibility of electrode displacement or detachment from the bladder wall. The multiple contacts enable precise stimulation of the bladder wall. Compared with traditional surgical methods, this improves treatment efficacy while saving surgical costs.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to an electrode device, an electrode release device, and a detrusor muscle contraction stimulation system. Background Technology

[0002] Bladder dysfunction affects a patient's urine storage and emptying functions; many bladder dysfunction disorders are accompanied by impaired contraction of the bladder detrusor muscle, which can lead to a series of clinical problems such as urinary frequency, urinary retention, and hydronephrosis.

[0003] Currently, sacral nerve stimulator implantation is often used to help improve the condition of patients with detrusor muscle weakness. Sacral nerve modulation requires a complete neural pathway. However, if the patient's nerve damage (such as combined spinal cord injury, severe peripheral neuropathy caused by diabetes, etc.) is severe, it will affect the conduction of the stimulation current along the nerve network to the bladder, thus leading to poor surgical results or even no improvement.

[0004] In addition, sacral nerve stimulator implantation surgery is expensive, with the first and second stages of surgery costing nearly 100,000 yuan. Some provinces have not yet included this part of medical insurance, and many patients cannot bear the economic pressure and give up the surgery. Even in provinces that have included it in medical insurance, this type of surgery still brings a heavy economic burden to patients' families and society. Utility Model Content

[0005] To address the aforementioned problems, this invention provides an electrode device, an electrode release device, and a detrusor muscle contraction stimulation system.

[0006] The present invention provides an electrode device, an electrode release device, and a detrusor muscle contraction stimulation system, which adopts the following technical solution:

[0007] In a first aspect, this utility model provides an electrode device, which adopts the following technical solution:

[0008] An electrode device includes an electrode with multiple electrode contacts. Both ends of the electrode are provided with multiple barbed components for fixing the electrode to the bladder wall. Each barbed component is separated from the electrode on the side closest to the electrode end.

[0009] By adopting the above technical solution, when detrusor muscle contraction stimulation is required, the electrode device only needs to be implanted into the patient's bladder wall. The barbed component reduces the possibility of the electrode shifting or falling off on the bladder wall. The multi-contact point achieves precise stimulation of the bladder wall. Compared with traditional surgical methods, it improves the treatment effect while saving surgical costs.

[0010] Optionally, the barb assembly includes a baffle and a spring. One end of the baffle near the electrode is hinged to the electrode, one end of the spring is fixedly connected to the baffle, and the other end of the spring is fixedly connected to the electrode. The baffle is made of a flexible material.

[0011] By adopting the above technical solution, the baffle can dynamically adapt to the shape and changes of the bladder wall by setting a spring, ensuring close contact between the electrode and the bladder wall. Under the action of the spring, the baffle can continuously apply a certain pressure to the bladder wall, thereby enhancing the fixation effect of the electrode and preventing the electrode from moving or falling off in the bladder. The baffle is made of flexible material to reduce the possibility of bladder damage.

[0012] Optionally, the electrode includes a front section, a middle section, and a rear section connected to each other. An inlet head is fixedly connected to the end of the front section away from the middle section. The middle section and the rear section are cylindrical. The inlet head is semi-circular. The diameter of the end of the front section near the inlet head is smaller than the diameter of the end near the middle section. The barb assembly is disposed on the front section and the rear section. The electrode contact is disposed on the middle section. The front section, the middle section, and the rear section are made of flexible material.

[0013] By adopting the above technical solution, the semi-circular insertion head allows the electrode to transition more smoothly when implanted into the bladder wall, reducing damage and irritation to surrounding tissues.

[0014] Optionally, the multiple barb assemblies at each end of the electrode are arranged in an alternating manner.

[0015] By adopting the above technical solution, the staggered arrangement of the barb components makes the fixing points of the electrodes on the bladder wall more dispersed and uniform, thereby enhancing the stability of the electrodes.

[0016] Secondly, this utility model provides an electrode release device, which adopts the following technical solution:

[0017] An electrode release device includes an electrode protective sleeve and a push rod. The electrode protective sleeve includes an insertion part, an electrode storage part, and a push rod storage part. The end of the insertion part is open. The insertion part, the electrode storage part, and the push rod storage part are integrally formed. An electrode according to any one of the first aspects is placed in the electrode storage part inside the electrode protective sleeve. The push rod is placed in the push rod storage part inside the electrode protective sleeve and is slidably connected to the electrode protective sleeve.

[0018] By adopting the above technical solution, the electrode can be accurately inserted into the target position, ensuring the accuracy and effectiveness of electrode release. The sliding connection between the push rod and the electrode protective sleeve allows the electrode to remain stable during release, avoiding release failure due to shaking or displacement, and improving the success rate of electrode release.

[0019] Optionally, a marking line is provided on the outer side of the electrode protective sleeve between the electrode storage section and the push rod storage section.

[0020] By adopting the above technical solution and setting a marking line, it is possible to determine that the electrode device is located behind the bladder wall before release, and to release it at the appropriate time, thereby improving the safety and success rate of the surgery.

[0021] Optionally, the push rod is provided with a limiting member on its side wall for fixing the push rod to the electrode protective sleeve.

[0022] By adopting the above technical solution and setting a limiting component, the position of the push rod within the electrode protective sleeve can be ensured to be stable, reducing the possibility of accidental movement or detachment when not in operation; this helps to maintain the overall stability of the electrode release device and reduce the safety risks caused by push rod movement.

[0023] Optionally, a guide post is provided on the side of the baffle away from the electrode, and a guide groove is provided on the inner wall of the electrode protective sleeve for the guide post to slide.

[0024] By adopting the above technical solution, the cooperation between the guide post and the guide groove plays a precise guiding role, enabling the electrode protective sleeve to maintain a stable trajectory during movement and improving the smoothness of the electrode protective sleeve's movement.

[0025] Thirdly, this utility model provides a detrusor muscle contraction stimulation system, which adopts the following technical solution:

[0026] A detrusor muscle contraction stimulation system, comprising: an electrode device and a pulse generator as described in any one of the first aspects;

[0027] The pulse generator is used to emit microwave pulses;

[0028] The electrode device is used to generate an induced current based on microwave pulses.

[0029] Optionally, the pulse generator includes a pulse power supply, a charging resistor, a discharging capacitor, a switch, and an inductor. The first end of the pulse power supply is connected to one end of the charging resistor. The other end of the charging resistor is connected to one end of the discharging capacitor and the first end of the switch. The other end of the discharging capacitor is connected to a ground terminal. The other end of the switch is connected to one end of the inductor. The other end of the inductor is grounded. The second end of the pulse power supply is connected to the ground terminal.

[0030] By adopting the above technical solution, when it is necessary to stimulate the bladder detrusor muscle, the pulse current is first controlled to charge the discharge capacitor. After the discharge capacitor is fully charged, the pulse power supply is disconnected and the switch is turned on at the same time so that the discharge capacitor starts to discharge, thereby generating microwave pulses from the inductor, i.e. the transmitting antenna. At this time, the electrode detects the microwave pulses emitted by the transmitting antenna and generates an induced current on the electrode, thereby stimulating the bladder detrusor muscle through the electrode contacts to achieve the effect of stimulating bladder muscle contraction and improving urination.

[0031] In summary, this utility model has at least one of the following beneficial technical effects:

[0032] 1. When detrusor muscle contraction stimulation is required, the electrode device only needs to be implanted into the patient's bladder wall. The barbed component reduces the possibility of the electrode shifting or falling off on the bladder wall. The multi-contact point achieves precise stimulation of the bladder wall. Compared with traditional surgical methods, it improves the treatment effect while saving surgical costs.

[0033] 2. The electrode with the insertion part can accurately penetrate the target position, ensuring the accuracy and effectiveness of electrode release. The sliding connection between the push rod and the electrode protective sleeve allows the electrode to remain stable during release, avoiding release failure due to shaking or displacement, and improving the success rate of electrode release.

[0034] 3. When it is necessary to stimulate the bladder detrusor muscle, first control the pulse current to charge the discharge capacitor. After the discharge capacitor is fully charged, disconnect the pulse power supply and turn on the switch at the same time to make the discharge capacitor start to discharge, so that the inductor, i.e. the transmitting antenna, generates a microwave pulse. At this time, the electrode detects the microwave pulse emitted by the transmitting antenna and generates an induced current on the electrode, thereby stimulating the bladder detrusor muscle through the electrode contacts to achieve the effect of stimulating bladder muscle contraction and improving urination. Attached Figure Description

[0035] Figure 1 This is a schematic diagram illustrating the structure of the electrode device in Example 1.

[0036] Figure 2 This is embodied in Example 1. Figure 1 A magnified view of part A in the middle.

[0037] Figure 3 This is a schematic diagram illustrating the structure of the electrode protective sleeve in Example 2.

[0038] Figure 4 This is a schematic diagram illustrating the connection between the electrode device, push rod, and electrode protective sleeve in Example 2.

[0039] Figure 5 This is a circuit diagram illustrating a detrusor muscle contraction stimulation system in Example 3.

[0040] Explanation of reference numerals in the attached drawings: 1. Electrode; 11. Front section; 111. Inlet head; 12. Middle section; 121. Electrode contact; 13. Rear section; 131. Guide post; 2. Barb assembly; 21. Baffle; 22. Spring; 3. Electrode protective sleeve; 31. Insertion part; 32. Electrode storage part; 321. Marking line; 33. Push rod storage part; 331. Guide groove; 332. Limiting hole; 4. Push rod; 41. Limiting element. Detailed Implementation

[0041] The following is in conjunction with the appendix Figure 1-5 The present invention will be described in further detail below.

[0042] Example 1:

[0043] This utility model discloses an electrode device. (Refer to...) Figure 1 and Figure 2 The electrode device includes an electrode 1, which comprises a front section 11, a middle section 12, and a rear section 13 connected to each other. An inlet head 111 is fixedly connected to the end of the front section 11 away from the middle section 12. The middle section 12 and the rear section 13 are cylindrical, and the inlet head 111 is semi-circular. The diameter of the end of the front section 11 near the inlet head 111 is smaller than the diameter of the end near the middle section 12. Multiple staggered barb components 2 are provided on the front section 11 and the rear section 13, and each barb component 2 is separated from the electrode 1 on the side near the end of the electrode 1. Multiple electrode contacts 121 are provided on the middle section 12. In this embodiment, four electrode contacts 121 are provided. The length of the electrode 1 is 0.4 cm and the diameter is 0.2 cm. The electrode contacts 121 are made of platinum-iridium alloy. The front section 11, the middle section 12, and the rear section 13 are all made of flexible material. In this embodiment, the flexible material is polyurethane.

[0044] The barbed assembly 2 includes a baffle 21 and a spring 22. In this embodiment, the baffle 21 is rectangular and made of a flexible material to reduce the possibility of damage to the bladder. For the front section 11, the end of the baffle 21 near the front section 11 is hinged to the front section 11, one end of the spring 22 is fixedly connected to the front section 11, and the other end of the spring 22 is fixedly connected to the baffle 21. When the spring 22 is in a naturally extended state, the side of the baffle 21 near the end of the front section 11 is separated from the front section 11. For the rear section 13, the end of the baffle 21 near the rear section 13 is hinged to the rear section 13, one end of the spring 22 is fixedly connected to the rear section 13, and the other end of the spring 22 is fixedly connected to the baffle 21. When the spring 22 is in a naturally extended state, the side of the baffle 21 near the end of the rear section 13 is separated from the rear section 13.

[0045] In this embodiment, the baffle 21 is made of polyurethane and the length of the baffle 21 is 0.3cm.

[0046] When the electrode device enters the bladder wall, the spring 22 is in a naturally extended state, and the side of the baffle 21 near the end of the electrode 1 is separated from the electrode 1. Under the pressure of the bladder mucosa, the spring 22 is compressed. Under the elastic force of the spring 22, the baffle 21 is pressed against the bladder wall, thereby fixing the electrode device in the bladder wall and reducing the possibility of the electrode device moving in the bladder wall, so as to achieve stimulation of detrusor muscle contraction through the electrode device.

[0047] It should be noted that, in order to improve the treatment effect, an electrode device can be implanted in each of the left and right lateral walls, the posterior wall, the anterior wall, and the superior wall.

[0048] Example 2:

[0049] This utility model discloses an electrode release device. (Refer to...) Figure 3 and Figure 4 The electrode release device includes an electrode protective sleeve 3 and a push rod 4. The electrode protective sleeve 3 includes an integrally formed insertion part 31, an electrode storage part 32 and a push rod storage part 33. The end of the insertion part 31 away from the electrode storage part 32 is open and has the same shape as the needle tip of the medicine needle.

[0050] In this embodiment, the electrode protective sleeve 3 has a total length of 40cm and a diameter of 0.25cm, the electrode storage part 32 has a length of 0.4cm, the insertion part 31 has a length of 0.2cm, and the push rod 4 has a length of 50cm and a diameter of 0.2cm.

[0051] In Example 1, the electrode device is disposed inside the electrode protective sleeve 3 and located in the electrode storage section 32. The electrode device is slidably connected to the electrode protective sleeve 3. Similarly, the push rod 4 is disposed inside the electrode protective sleeve 3 and located in the push rod storage section 33. The push rod 4 is slidably connected to the electrode protective sleeve 3. A marking line 321 is provided on the outer wall of the electrode protective sleeve 3. The marking line 321 is located between the electrode storage section 32 and the push rod storage section 33. A limiting member 41 for fixing the push rod 4 to the electrode protective sleeve 3 is provided on the push rod 4. A limiting hole 332 is provided on the electrode protective sleeve 3. The limiting member 41 passes through the limiting hole 332 and is inserted into the push rod 4.

[0052] In this embodiment, the limiting member 41 is positioned 30cm away from the electrode device on the push rod 4.

[0053] A guide post 131 is fixedly connected to the side of the baffle 21 away from the front section 11 / rear section 13, and a guide groove 331 is provided on the inner wall of the electrode protective sleeve 3 for the guide post 131 to slide.

[0054] When detrusor muscle contraction stimulation therapy is required, the electrode protective sleeve 3 is inserted into the bladder cavity through a cystoscope. After determining the appropriate location in the bladder, it is inserted into the bladder wall through the insertion part 31. When the marking line 321 passes through the bladder mucosa, the limiting member 41 is moved away from the electrode protective sleeve 3 until the limiting member 31 is completely detached from the electrode protective sleeve 3. Then, the push rod 4 is fixed, and the electrode protective sleeve 3 is moved away from the electrode device. At this time, the guide post 131 moves in the guide groove 331. When the electrode device leaves the electrode protective sleeve 3, the spring 22 gradually returns to its original length, and the side of the baffle 21 near the end of the electrode 1 separates from the electrode 1, thereby fixing the electrode device to the bladder wall. At this time, after the insertion part 31 of the electrode protective sleeve 3 is withdrawn from the bladder cavity, the electrode protective sleeve 3 and the push rod 4 are withdrawn together until they are completely detached from the human body.

[0055] Example 3:

[0056] This utility model discloses a detrusor muscle contraction stimulation system, which includes: an electrode device and a pulse generator; the pulse generator is used to emit microwave pulses; the electrode device is used to generate induced current according to the microwave pulses.

[0057] Reference Figure 5 The pulse generator includes a pulse power supply U1, a charging resistor R1, a discharging capacitor C1, a switch SB1, and an inductor L1. The first end of the pulse power supply U1 is connected to one end of the charging resistor R1. The other end of the charging resistor R1 is connected to one end of the discharging capacitor C1 and the first end of the switch SB1. The other end of the discharging capacitor C1 is connected to the ground terminal. The other end of the switch SB1 is connected to one end of the inductor L1. The other end of the inductor L1 is grounded. The second end of the pulse power supply U1 is connected to the ground terminal.

[0058] When it is necessary to stimulate the bladder detrusor muscle, first control the pulse power supply U1 to charge the discharge capacitor C1. After the discharge capacitor C1 is fully charged, disconnect the pulse power supply U1 and open the switch SB1 at the same time so that the discharge capacitor C1 starts to discharge, thereby causing the inductor L1, i.e. the transmitting antenna, to form a microwave pulse. At this time, the electrode L2 detects the microwave pulse emitted by the transmitting antenna and forms an induced current on the electrode L2, thereby stimulating the bladder detrusor muscle through the electrode contacts of the electrode L2.

[0059] It is worth noting that, Figure 5 In the circuit diagram shown, the bladder detrusor muscle can be represented as an equivalent resistor R2. The bladder detrusor muscle is stimulated through the electrode contacts of electrode L2 to stimulate bladder muscle contraction and improve urination.

[0060] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. An electrode device, characterized by: The device includes an electrode (1), which includes multiple electrode contacts (121). Both ends of the electrode (1) are provided with multiple barb assemblies (2) for fixing the electrode (1) to the bladder wall. Each barb assembly (2) is separated from the electrode (1) on the side near the end of the electrode (1).

2. An electrode device according to claim 1, characterized in that: The barb assembly (2) includes a baffle (21) and a spring (22). The baffle (21) is hinged to the electrode (1) at one end near the electrode (1). One end of the spring (22) is fixedly connected to the baffle (21), and the other end of the spring (22) is fixedly connected to the electrode (1). The baffle (21) is made of a flexible material.

3. An electrode device according to claim 1, characterized in that: The electrode (1) includes a front section (11), a middle section (12), and a rear section (13) connected to each other. The end of the front section (11) away from the middle section (12) is fixedly connected to an inlet head (111). The middle section (12) and the rear section (13) are cylindrical. The inlet head (111) is semi-circular. The diameter of the end of the front section (11) near the inlet head (111) is smaller than the diameter of the end near the middle section (12). The barb assembly (2) is disposed on the front section (11) and the rear section (13). The electrode contact (121) is disposed on the middle section (12). The front section (11), the middle section (12), and the rear section (13) are made of flexible material.

4. An electrode device according to claim 1, characterized in that: The multiple barb components (2) at each end of the electrode (1) are arranged alternately.

5. An electrode release device, characterized by: The electrode protective sleeve (3) includes an electrode protective sleeve (3) and a push rod (4). The electrode protective sleeve (3) includes an insertion part (31), an electrode storage part (32), and a push rod storage part (33). The end of the insertion part (31) is open. The insertion part (31), the electrode storage part (32), and the push rod storage part (33) are integrally formed. The electrode (1) according to any one of claims 1-4 is placed in the storage part (32) inside the electrode protective sleeve (3). The push rod (4) is placed in the push rod storage part (33) inside the electrode protective sleeve (3). The push rod (4) is slidably connected to the electrode protective sleeve (3).

6. An electrode release device according to claim 5, wherein: A marking line (321) is provided on the outside of the electrode protective sleeve (3) between the electrode storage part (32) and the push rod storage part (33).

7. An electrode release device according to claim 5, wherein: The push rod (4) has a limiting member (41) on its side wall for fixing the push rod (4) to the electrode protective sleeve (3).

8. An electrode release device according to claim 5, wherein: The baffle (21) is provided with a guide post (131) on the side away from the electrode (1), and the inner wall of the electrode protective sleeve (3) is provided with a guide groove (331) for the guide post (131) to slide.

9. A detrusor contraction stimulation system characterized by, include: An electrode device and a pulse generator as described in any one of claims 1-4; The pulse generator is used to emit microwave pulses; The electrode device is used to generate an induced current based on microwave pulses.

10. A detrusor contraction stimulation system according to claim 9, wherein: The pulse generator includes a pulse power supply, a charging resistor, a discharging capacitor, a switch, and an inductor. The first end of the pulse power supply is connected to one end of the charging resistor. The other end of the charging resistor is connected to one end of the discharging capacitor and the first end of the switch. The other end of the discharging capacitor is connected to a ground terminal. The other end of the switch is connected to one end of the inductor. The other end of the inductor is grounded. The second end of the pulse power supply is connected to the ground terminal.

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