Urethral sphincter muscle strength myoelectricity and urethral pressure and flow detection device

Abstract

The utility model discloses a urethra sphincter muscle strength myoelectricity and urethra pressure and flow detection device which comprises a urethra catheter with an endoscope arranged at the end, a myoelectricity signal detection electrode and a thin film pressure sensor are arranged on the outer wall of a catheter body of the urethra catheter, and a core layer and a middle layer are sequentially arranged in the catheter body of the urethra catheter from inside to outside in a sleeved mode. A urine leading-out channel is formed in an interlayer between the core layer and the middle layer, a liquid guiding opening communicated with the urine leading-out channel is formed in the side wall of a catheter body of the urethral catheter close to the endoscope, and liquid flow sensors are arranged on the side walls, corresponding to the urine leading-out channel, of the core layer and the middle layer; a catheter body of the urethra catheter is of an elastic structure, a catheter expanding channel is formed by an interlayer between the catheter body and the middle layer, and the catheter expanding channel is communicated with the air inlet pipe or the water inlet pipe. According to the urethral sphincter detection device, diversified function detection can be achieved for the urethral sphincter, so that the urethral health state of a patient can be evaluated more comprehensively, and better data support is provided for clinical diagnosis and treatment of a doctor.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical detection, in particular to a device for detecting urethral sphincter muscle strength and myoelectricity as well as urethral pressure and flow. Background Art

[0002] The urethral sphincter is a muscle that controls urination. It consists of the internal and external sphincters and is located around the urethra. It controls urination through contraction and relaxation. The urethral sphincter is located differently in men and women: in men, it is located at the bladder neck and prostate apex, while in women, it is located in the middle of the urethra. Damage or relaxation of the urethral sphincter can impair urinary control and cause incontinence. Therefore, it is necessary to test the function of the urethral sphincter.

[0003] Currently, clinical evaluation of urethral sphincter function can be performed through uroflowmetry, pelvic floor electromyography, cystometry, urethral pressure measurement, and ultrasonic cystometry. However, these tests are performed individually, requiring patients to undergo multiple tests separately before doctors diagnose and treat based on the comprehensive evaluation indicators of these tests. For example, in uroflowmetry, patients are required to empty their bladder within a fixed time and record the volume and time of each urination to calculate the average urinary flow rate to assess the flow rate and control ability during urination. Pelvic floor electromyography records pelvic floor muscle electrical activity by placing special sensors on the buttocks or perineum, stimulating muscle contraction under conditions such as calm breathing and coughing, and measuring the electrical signals generated by muscle activity to assess the functional status of the urethral sphincter. Urethral pressure measurement uses a special sensor connected to the urethral opening to record the resting urethral pressure and pressure changes when urination is induced, thereby obtaining an assessment of the urethral sphincter's response to the storage and urination phases. With the continuous progress of current detection technology, researching and developing a device that integrates multiple functional tests for the urethral sphincter will greatly improve patients' medical experience and doctors' diagnostic efficiency.

[0004] In the prior art, Chinese patent CN103876724A discloses a dual-balloon fixed vesicourethral simultaneous pressure measuring tube for urodynamic examinations. The tube comprises a five-lumen catheter body consisting of a bladder instillation tube, a cystometer tube, a urethral pressure measuring tube, an intravesical balloon inflation tube, and an extraurethral balloon inflation tube. The extravesical and extraurethral balloons allow the catheter body to move during measurement, achieving the goal of simultaneously measuring bladder pressure and urethral pressure at the urethral sphincter, thus avoiding artifacts of urethral pressure changes caused by displacement of the vesicourethral simultaneous pressure measuring tube. However, this patent still fails to simultaneously detect both urethral fluid flow and urethral muscle status. Utility Model Content

[0005] The purpose of the present utility model is to provide a urethral sphincter muscle strength and myoelectricity and urethral pressure and flow detection device, which can realize diversified functional detection of the urethral sphincter, including detection of muscle contraction and relaxation ability, inspection of muscle integrity and status, detection of urethral distribution pressure and detection of urethral flow, so as to more comprehensively evaluate the patient's urethral health status and provide better data support for doctors' clinical diagnosis and treatment.

[0006] The utility model is realized through the following technical solutions: a urethral sphincter muscle strength and myoelectricity and urethral pressure and flow detection device, comprising a urethral catheter with an endoscope provided at the end thereof, a myoelectric signal detection electrode and a thin film pressure sensor provided on the outer wall of the tube body of the urethral catheter, a core layer and an intermediate layer sequentially sleeved from the inside to the outside of the tube body of the urethral catheter, a sandwich layer between the core layer and the intermediate layer forming a urine outlet channel, and a liquid guide port connected to the urine outlet channel provided on the side wall of the tube body of the urethral catheter near the endoscope, and liquid flow sensors provided on the side walls of the core layer and the intermediate layer corresponding to the urine outlet channel; the tube body of the urethral catheter is of an elastic structure, and the sandwich layer between the core layer and the intermediate layer forms a catheter expansion channel, and the catheter expansion channel is connected to an air inlet pipe or a water inlet pipe.

[0007] The myoelectric signal detection electrodes and the thin film pressure sensor are in a strip-shaped structure and are spaced and evenly arranged along the outer wall of the urethral catheter.

[0008] The liquid guide port is an elastic groove body that is recessed inwardly along the tube body of the urethra catheter, and an opening that is opened and closed by pressure is provided on the elastic groove.

[0009] The liquid flow sensors are evenly arranged along the entire urine outlet channel.

[0010] A limiting balloon is also provided on the tube body of the urethral catheter. The limiting balloon is located near the fluid inlet and is communicated with the catheter expansion channel.

[0011] The interior of the core layer is hollow, and a guide wire structure for assisting in guiding the lower tube is arranged therein.

[0012] The urethral catheter is suitable for males. The diameter of the urethral catheter body is 5-7 mm and the length is 16-22 cm. The distance between the urethral catheter body and the middle layer is 0.5-1.5 mm; the distance between the core layer and the middle layer is 0.5-2.5 mm.

[0013] The urethral catheter is suitable for females. The diameter of the urethral catheter body is 5-7 mm and the length is 4-6 cm. The distance between the urethral catheter body and the middle layer is 0.5-1.5 mm; the distance between the core layer and the middle layer is 1-3 mm.

[0014] The tube body of the urethral catheter is made of silicone rubber, natural latex or PDMS.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0016] (1) The utility model can simultaneously detect the muscle force and electromyographic signals of the urethral sphincter at different positions at multiple locations by laying electromyographic signal detection electrodes and a thin film pressure sensor array on the outer wall of the urethral catheter, which is conducive to a comprehensive, accurate and three-dimensional evaluation of the muscle contraction and relaxation ability of the urethral sphincter.

[0017] (2) The present invention provides a urine outlet channel between the core layer and the middle layer, and lays a liquid flow sensor array on the side wall of the urine outlet channel. This allows the device to test the urethral flow distribution in real time when the urine outlet channel port is connected to a urine bag to collect urine. This can be combined with the muscle strength and electromyography data of the urethral sphincter to comprehensively evaluate the patient's urethral health status.

[0018] (3) The present invention provides elastic contraction performance for the tube body by designing a catheter expansion channel between the tube body and the middle layer of the urethral catheter. By injecting water or gas, the outer layer of the tube body can be expanded, so that it can adapt to the test patients with relaxed urethra, making the device universal. Of course, the design of the catheter expansion channel is also conducive to the fit between the side wall of the tube body and the urethral sphincter, ensuring the accuracy of the muscle force and electromyographic signal detection of the urethral sphincter.

[0019] (4) The present invention adopts the setting of endoscope, which is conducive to the real-time observation of the muscle integrity and status of the bladder neck and urethral sphincter. At the same time, a guide wire structure is set in the core layer, which can support the urethral catheter and ensure accurate and painless insertion during endoscopic examination. Combined with the design of the limiting balloon, it is conducive to assisting the fixing of the urethral catheter after insertion, thereby realizing subsequent testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the present utility model.

[0021] Figure 2 It is a cross-sectional view of the present utility model.

[0022] Figure 3 for Figure 2 A-direction sectional view shown.

[0023] Among them, 1 is an endoscope, 2 is a urethral catheter, 3 is an electromyographic signal detection electrode, 4 is a thin film pressure sensor, 5 is a core layer, 6 is an intermediate layer, 7 is a urine outlet channel, 8 is a liquid guide port, 9 is a liquid flow sensor, 10 is a catheter expansion channel, 11 is a limiting balloon, and 12 is a guidewire structure. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below with reference to the embodiments, but the embodiments of the present invention are not limited thereto.

[0025] Example:

[0026] This embodiment relates to a urethral sphincter muscle strength, myoelectricity, and urethral pressure and flow detection device. By arranging detection components such as an endoscope 1, an electromyographic signal detection electrode 3, a thin film pressure sensor 4, and a liquid flow sensor 9 on a urethral catheter 2, various functional tests related to the urethral sphincter can be performed, thereby enabling a more comprehensive assessment of the patient's urethral health status.

[0027] The structure of the detection device involved in this utility model can be found in Figures 1 to 3 As shown, the main body is a urethral catheter 2 that can be inserted into the patient's urethra and tested. The urethral catheter 2 is a cylindrical structure, and an endoscope 1 is provided at its front end. During the process of introducing the urethral catheter 2 into the patient's urethra, the muscle integrity and status from the urethral sphincter to the bladder neck can be observed in real time.

[0028] The outer wall of the urethral catheter 2 is provided with a plurality of myoelectric signal detection electrodes 3 and a thin film pressure sensor 4, such as Figure 1 As shown, the myoelectric signal detection electrodes 3 and the thin film pressure sensors 4 are both strip-shaped structures with slightly different lengths. They can be spaced apart on the outer wall of the urethral catheter 2. For example, in one optional solution, the myoelectric signal detection electrodes 3 and the thin film pressure sensors 4 are arranged into multiple annular arrays, each of which contains four myoelectric signal detection electrodes 3 and four thin film pressure sensors 4, all arranged and spaced apart along the length of the urethral catheter 2. The arrangement of the myoelectric signal detection electrodes 3 and the thin film pressure sensors 4 enables the detection of myoelectric force signals of the urethral sphincter corresponding to different points in the urethra, thereby obtaining functional data on the contraction and relaxation of the urethral sphincter, as well as the distribution of urethral pressure.

[0029] In order to simultaneously realize the specific situation of the liquid flow in the urethra, a urine outlet channel 7 is designed in the urethral catheter 2. Specifically, in the urethral catheter 2, a core layer 5 and an intermediate layer 6 are sequentially sleeved from the inside to the outside. The core layer 5 is a hollow structure, in which a guide wire structure 12 supporting the tube body is arranged. The interlayer between the core layer 5 and the intermediate layer 6 forms a urine outlet channel 7. By providing a liquid guide port 8 on the side wall of the tube body of the urethral catheter 2 near the endoscope 1, the liquid guide port 8 is connected to the urine outlet channel 7, and a plurality of liquid flow sensors 9 are evenly laid on the side wall of the urine outlet channel 7 (i.e., the side wall corresponding to the core layer 5 and the intermediate layer 6 in the urine outlet channel 7). By using the liquid flow sensor 9 to detect the liquid flow passing through, the distribution of the liquid flow can be obtained, and the urine flow and its distribution can be detected while urine is being discharged. See. Figure 2 and Figure 3As shown. In an optional solution, to ensure reliable urine drainage, the drainage port 8 can be configured as an elastic groove recessed inward along the tube body of the urethral catheter 2, with a cross-shaped opening provided on the elastic groove that is opened and closed by pressure. A port for connecting to a urine bag can be provided at the outlet end corresponding to the urine drainage channel 7. During catheterization, the front end of the urethral catheter 2 is inserted into the patient's bladder, ensuring that the drainage port 8 is also located within the bladder. During drainage, the port is opened to connect to the urine bag. Under the action of bladder pressure, urine can be drained from the drainage port 8 and urine drainage channel 7 into the urine bag, and the urine flow and distribution can be simultaneously detected.

[0030] Due to the arrangement of the core layer 5 and the intermediate layer 6, a catheter expansion channel 10 is also designed in the urethral catheter 2, that is, the interlayer between the tube body of the urethral catheter 2 and the intermediate layer 6 is set as the catheter expansion channel 10. The tube body of the urethral catheter 2 can be made of elastic materials, such as silicone rubber, natural latex or PDMS. By injecting gas or water into the catheter expansion channel 10, the catheter expansion channel 10 can be pressurized to expand the tube body outward. It can be suitable for patients with different urethra sizes, especially patients with urethral relaxation. By expanding the urethral catheter 2 in an appropriate amount, the outer wall of the tube body of the urethral catheter 2 can be made to fit the side wall of the patient's urethra more closely, which is convenient for its accuracy in muscle force and electromyographic signal detection. Figures 1 to 2 As shown, a limiting balloon 11 is further provided on the tube body of the urethral catheter 2. The limiting balloon 11 is located near the liquid drainage port 8 and is connected to the catheter expansion channel 10. It can be inserted into the bladder during the catheterization process to facilitate the fixation of the urethral catheter 2.

[0031] In an optional solution, when the detection device involved in this embodiment is suitable for male patients, the size of the urethral catheter 2 meets the following requirements: the diameter of the tube body is 5 to 7 mm, and the length is 16 to 22 cm, wherein the distance between the tube body of the urethral catheter 2 and the intermediate layer 6 is 0.5 to 1.5 mm; the distance between the core layer 5 and the intermediate layer 6 is 0.5 to 2.5 mm.

[0032] In an optional solution, when the detection device involved in this embodiment is suitable for female patients, the size of the urethral catheter 2 meets the following requirements: the diameter of the tube body is 5 to 7 mm, and the length is 4 to 6 cm, wherein the distance between the tube body of the urethral catheter 2 and the intermediate layer 6 is 0.5 to 1.5 mm; the distance between the core layer 5 and the intermediate layer 6 is 1 to 3 mm.

[0033] In an optional solution, the endoscope 1, thin film pressure sensor 4, and liquid flow sensor 9 all utilize wireless sensing devices. Through their built-in wireless data modules, the collected detection data is transmitted to the host in real time. The wires of the electromyographic signal detection electrodes 3 can be embedded in the tube wall of the urethral catheter 2 and then connected to the host through the end portion, thereby achieving detection and signal transmission of the entire urethral catheter 2. As for the power supply for each inspection component, it can be implemented using an internal power supply or an external power cord. The power cord can be embedded in the tube wall of the corresponding core layer 5 or intermediate layer 6. Both can be implemented based on existing conventional designs and will not be described in detail in this embodiment.

[0034] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention falls within the scope of protection of the present invention.

Claims

1. A device for detecting urethral sphincter muscle strength, myoelectricity, and urethral pressure and flow, characterized by: The invention comprises a urethral catheter (2) with an endoscope (1) provided at the end thereof, a myoelectric signal detection electrode (3) and a thin film pressure sensor (4) provided on the outer wall of the tube body of the urethral catheter (2), a core layer (5) and an intermediate layer (6) are sequentially sleeved inside the tube body of the urethral catheter (2) from the inside to the outside, a sandwich layer between the core layer (5) and the intermediate layer (6) forms a urine outlet channel (7), and a liquid guide port (8) communicating with the urine outlet channel (7) is provided on the side wall of the tube body of the urethral catheter (2) near the endoscope (1), and a liquid flow sensor (9) is provided on the side wall of the core layer (5) and the intermediate layer (6) corresponding to the urine outlet channel (7); the tube body of the urethral catheter (2) has an elastic structure, and the sandwich layer between the core layer (5) and the intermediate layer (6) forms a catheter expansion channel (10), and the catheter expansion channel (10) is communicated with an air inlet pipe or a water inlet pipe.

2. The urethral sphincter muscle strength and myoelectricity and urethral pressure and flow detection device according to claim 1, characterized in that: The myoelectric signal detection electrodes (3) and the thin film pressure sensors (4) are in a strip-shaped structure and are spaced and evenly arranged along the outer wall of the urethral catheter (2).

3. The urethral sphincter muscle strength and myoelectricity and urethral pressure and flow detection device according to claim 1, characterized in that: The liquid guide port (8) is an elastic groove body that is recessed inwardly along the tube body of the urethra catheter (2), and an opening that is opened and closed by pressure is provided on the elastic groove.

4. The urethral sphincter muscle strength and myoelectricity and urethral pressure and flow detection device according to claim 1, characterized in that: The liquid flow sensors (9) are evenly arranged along the entire urine outlet channel (7).

5. The urethral sphincter muscle strength and myoelectricity and urethral pressure and flow detection device according to claim 1, characterized in that: A limiting balloon (11) is also provided on the tube body of the urethral catheter (2). The limiting balloon (11) is located near the fluid inlet (8) and is in communication with the catheter expansion channel (10).

6. The urethral sphincter muscle strength and myoelectricity and urethral pressure and flow detection device according to claim 1, characterized in that: The core layer (5) is hollow inside, and is provided with a guide wire structure (12) for assisting in guiding the lower tube.

7. The urethral sphincter muscle strength and myoelectricity and urethral pressure and flow detection device according to claim 1, characterized in that: The diameter of the tube body of the urethral catheter (2) is 5 to 7 mm, and the length is 16 to 22 cm, wherein the distance between the tube body of the urethral catheter (2) and the middle layer (6) is 0.5 to 1.5 mm; and the distance between the core layer (5) and the middle layer (6) is 0.5 to 2.5 mm.

8. The urethral sphincter muscle strength and myoelectricity and urethral pressure and flow detection device according to claim 1, characterized in that: The diameter of the tube body of the urethral catheter (2) is 5 to 7 mm, and the length is 4 to 6 cm, wherein the distance between the tube body of the urethral catheter (2) and the middle layer (6) is 0.5 to 1.5 mm; and the distance between the core layer (5) and the middle layer (6) is 1 to 3 mm.

9. The urethral sphincter muscle strength and myoelectricity and urethral pressure and flow detection device according to claim 7, characterized in that: The tube body of the urethral catheter (2) is made of silicone rubber, natural latex or PDMS.

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