Hysteroscope

Abstract

The utility model discloses a hysteroscope which comprises a uterine distention liquid bag, a liquid inlet pipeline, an infusion pump, a liquid outlet pipeline, a liquid drainage pump, a waste liquid collection bottle, a first flow meter, a second flow meter, a processor and an upper computer. The infusion pump is used for driving uterine distention liquid in the uterine distention liquid bag to enter a uterine cavity through the liquid inlet pipeline; the liquid outlet pipeline is connected with the waste liquid collecting bottle, and the liquid discharge pump is used for driving uterine distention liquid in the uterine cavity to enter the waste liquid collecting bottle through the liquid outlet pipeline; the first flow meter is arranged on the liquid inlet pipeline and is used for detecting the flow rate of the uterine distention liquid in the liquid inlet pipeline; the second flow meter is arranged on the liquid outlet pipeline and is used for detecting the flow rate of the uterine distention liquid in the liquid outlet pipeline; the processor is electrically connected with the first flow meter and the second flow meter at the same time; and the upper computer is electrically connected with the processor. The technical problem of water poisoning in an operation in the prior art can be relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hysteroscopes, in particular to a hysteroscope. Background Art

[0002] Hysteroscopic transurethral resection is a common gynecological surgery in recent years. The hysteroscope has a magnifying effect and can directly examine lesions in the uterus. It is a commonly used instrument for the diagnosis and treatment of gynecological diseases. The use of hysteroscopic surgery to remove endometrial polyps, submucosal fibroids, etc. has significant therapeutic effects and does not require laparotomy. It has the advantages of less bleeding, less trauma, and faster postoperative recovery, and is widely favored by patients.

[0003] However, this type of surgery will continue to use uterine distension fluid for flushing, which carries the risk of water intoxication. Water intoxication refers to a clinical syndrome characterized by dilutional hyponatremia and hypervolemia caused by the rapid absorption of large amounts of uterine distension fluid through the surgical wound during hysteroscopic surgery. Large amounts of uterine distension fluid absorbed into the human body will lead to water intoxication.

[0004] The amount of existing uterine distension fluid entering can be measured through the uterine distension system, but the amount of uterine distension fluid output is usually not accurately measured. The amount of uterine distension fluid output is judged solely based on experience, which puts surgical patients at risk of water intoxication. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a hysteroscope to alleviate the technical problem of water intoxication during surgery in the prior art.

[0006] The utility model is realized by the following technical solutions:

[0007] A hysteroscope, comprising a distension fluid bag, a liquid inlet pipeline, an infusion pump, a liquid outlet pipeline, a drainage pump and a waste liquid collection bottle, wherein the liquid inlet pipeline is connected to the distension fluid bag, and the infusion pump is used to drive the distension fluid in the distension fluid bag into the uterine cavity via the liquid inlet pipeline; the liquid outlet pipeline is connected to the waste liquid collection bottle, and the drainage pump is used to drive the distension fluid in the uterine cavity into the waste liquid collection bottle via the liquid outlet pipeline; the hysteroscope also includes:

[0008] A first flow meter, arranged on the liquid inlet pipeline, for detecting the flow rate of the uterine distension fluid in the liquid inlet pipeline;

[0009] A second flow meter, disposed on the liquid outlet pipeline, for detecting the flow rate of the uterine distension fluid in the liquid outlet pipeline;

[0010] a processor, the processor being electrically connected to the first flow meter and the second flow meter at the same time;

[0011] A host computer is electrically connected to the processor.

[0012] Furthermore, the first flow meter includes a Hall sensor, an impeller and a pair of magnets, wherein the pair of magnets are symmetrically arranged on the impeller, and when the impeller rotates, the pair of magnets correspond to the Hall sensor alternately, and the Hall sensor is electrically connected to the processor.

[0013] Furthermore, the first flow meter also includes a shell, the shell has a cavity sealed and connected to the liquid inlet pipeline, and the impeller is rotatably disposed in the cavity.

[0014] Furthermore, a rotating shaft is convexly formed on the inner wall of the shell, and the impeller can rotate around the rotating shaft.

[0015] Furthermore, the second flow meter has the same structure as the first flow meter.

[0016] Furthermore, the liquid inlet pipeline includes a liquid inlet pipeline and a liquid infusion tube that are interconnected, the liquid outlet pipeline includes a liquid outlet pipeline and a liquid drainage tube that are interconnected, and the hysteroscope also includes a handheld device, the handheld device includes a handheld portion and an insertion portion arranged at a certain angle to the handheld portion, the insertion portion includes a second shell and a cannula arranged on the second shell, the cannula is provided with the liquid inlet pipeline and the liquid outlet pipeline along its axial direction, and the infusion tube and the liquid drainage tube are arranged on the outside of the handheld portion.

[0017] Furthermore, the handheld part includes a first shell, and the infusion tube and the drainage tube are symmetrically arranged on both sides of the first shell.

[0018] Furthermore, the first flowmeter is arranged on the infusion tube, the second flowmeter is arranged on the discharge tube, and the first flowmeter and the second flowmeter are symmetrically arranged on both sides of the first shell.

[0019] Furthermore, a first receiving groove for accommodating the infusion tube and a second receiving groove for accommodating the drainage tube are formed on the first shell; the infusion tube and the drainage tube are both elastic hoses; the opening of the first receiving groove has a first closing structure to limit the infusion tube, and the opening of the second receiving groove has a second closing structure to limit the drainage tube.

[0020] Furthermore, a first mounting groove and a second mounting groove are formed on the first shell, the first flow meter is fixed in the first mounting groove, and the second flow meter is fixed in the second mounting groove.

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] The processor calculates the total amount A of uterine distension fluid entering the human body based on the flow rate of uterine distension fluid detected by the first flow meter, and calculates the total amount of uterine distension fluid discharged from the human body based on the flow rate of uterine distension fluid detected by the second flow meter. The processor calculates the difference between the total amount A and the total amount B of uterine distension fluid and displays it in real time on the host computer. Therefore, medical staff can know the real-time content of uterine distension fluid in the patient's body, thereby reducing the probability of water intoxication in the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the pipeline structure of the hysteroscope;

[0024] Figure 2 is a schematic diagram of the structure of the handheld device;

[0025] Figure 3 It is a partial structural schematic diagram of the handheld part;

[0026] Figure 4 It is a partial structural schematic diagram of the flow meter;

[0027] Figure 5 This is the circuit diagram of the hysteroscope;

[0028] Figure 6 Schematic diagram of the local structure of the handheld part Figure 1 ;

[0029] Figure 7 Schematic diagram of the local structure of the handheld part Figure 2 ;

[0030] Figure 8 It is a partial structural cross-sectional view of the handheld part;

[0031] Fig. 9 It is a partial structural schematic diagram of the interception component;

[0032] Fig.10 Schematic diagram of the cutoff block structure.

[0033] 1. Uterine distension fluid bag; 2. Liquid inlet pipeline; 20. Liquid inlet pipeline; 300. Water inlet adapter; 21. Infusion tube; 3. Infusion pump; 4. Liquid outlet pipeline; 40. Liquid outlet pipeline; 400. Water outlet adapter; 41. Drain pipe; 5. Drain pump; 6. Waste liquid collection bottle; 7. First flow meter; 70. Hall sensor; 71. Impeller; 72. Magnet; 73. Housing; 730. Cavity; 731. Rotating shaft; 8. Second flow meter; 9. Processor; 10. Host computer; 100. Handheld device; 110. Handheld part; 111, first shell; 112, first receiving groove; 113, first mounting groove; 114, sliding channel; 120, insertion part; 121, second shell; 122, cannula; 200, cut-off assembly; 210, motor; 211, output shaft; 220, eccentric wheel; 221, annular groove; 223, recessed part; 222, limit baffle; 230, cut-off block; 231, drive rod; 232, sliding block; 233, main body; 234, contact part; 240, sealing member; 241, perforation. DETAILED DESCRIPTION

[0034] The following is a further non-restrictive detailed description of the utility model technical solution in conjunction with the preferred embodiment and its accompanying drawings. In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings. In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limitations on the utility model.

[0035] like Figure 1-Figure 10 As shown, a hysteroscope of one embodiment of the utility model comprises a distension fluid bag 1, a liquid inlet pipeline 2, an infusion pump 3, a liquid outlet pipeline 4, a drainage pump 5 and a waste liquid collection bottle 6, wherein the liquid inlet pipeline 2 is connected to the distension fluid bag 1, and the infusion pump 3 is used to drive the distension fluid in the distension fluid bag 1 into the uterine cavity via the liquid inlet pipeline 2; the liquid outlet pipeline 4 is connected to the waste liquid collection bottle 6, and the drainage pump 5 is used to drive the distension fluid in the uterine cavity into the waste liquid collection bottle 6 via the liquid outlet pipeline 4.

[0036] The hysteroscope further includes a first flow meter 7, a second flow meter 8, a processor 9 and a host computer 10. The first flow meter 7 is arranged on the liquid inlet pipeline 2, and is used to detect the flow rate of the uterine distension fluid in the liquid inlet pipeline 2. The second flow meter 8 is arranged on the liquid outlet pipeline 4, and is used to detect the flow rate of the uterine distension fluid in the liquid outlet pipeline 4. The processor 9 is electrically connected to the first flow meter 7 and the second flow meter 8 at the same time, and the host computer 10 is electrically connected to the processor 9. The processor 9 calculates the total amount of uterine distension fluid A entering the human body according to the flow rate of the uterine distension fluid detected by the first flow meter 7, and the processor 9 calculates the total amount of uterine distension fluid B discharged from the human body according to the flow rate of the uterine distension fluid detected by the second flow meter 8. The processor 9 performs a difference calculation based on the total amount of uterine distension fluid A and the total amount of uterine distension fluid B and displays it in real time on the host computer 10. Therefore, medical personnel can know the real-time content of uterine distension fluid in the patient's body, thereby reducing the probability of water intoxication in the patient.

[0037] like Figure 4 As shown, in this embodiment, the second flow meter 8 has the same structure as the first flow meter 7, specifically including a Hall sensor 70, an impeller 71 and a pair of magnets 72. The pair of magnets 72 are symmetrically arranged on the impeller 71. When the impeller 71 rotates, the pair of magnets 72 correspond to the Hall sensor 70 alternately, and the Hall sensor 70 is electrically connected to the processor 9.

[0038] like Figure 4 As shown, the first flow meter 7 also includes a housing 73, the housing 73 has a cavity 730 that is sealed and connected to the liquid inlet pipeline 2, and the impeller 71 is rotatably arranged in the cavity 730. Specifically, the inner wall of the housing 73 is convexly provided with a rotating shaft 731, and the impeller 71 can rotate around the rotating shaft 731. When the uterine distension fluid passes through the cavity 730, it will drive the impeller 71 to rotate, so that a pair of magnets 72 on the impeller 71 alternately correspond to the Hall sensor 70, and the Hall sensor 70 generates a voltage pulse according to the changing magnetic field. The frequency of the voltage pulse output by the Hall sensor 70 is proportional to the rotation speed of the impeller 71, so the rotation speed can be measured by converting this frequency into a voltage signal.

[0039] like Figure 1 and Figure 2As shown, the liquid inlet pipeline 2 includes a liquid inlet pipeline 20 and an infusion tube 21 that are interconnected, the liquid outlet pipeline 4 includes a liquid outlet pipeline 40 and a drainage tube 41 that are interconnected, and the hysteroscope also includes a handheld device 100, the handheld device 100 includes a handheld portion 110 and an insertion portion 120 connected to the handheld portion 110, the insertion portion 120 includes a second shell 121 and a cannula 122 arranged on the second shell 121, the cannula 122 is provided with a liquid inlet pipeline 20 and a liquid outlet pipeline 40 along its axial direction, the infusion tube 21 and the drainage tube 41 are both fixed on the handheld portion 110, specifically, the infusion tube 21 and the drainage tube 41 are arranged on the outside of the handheld portion 110, and one end of the infusion tube 21 is connected to the liquid inlet pipeline 20, and the other end is connected to the infusion pump 3, one end of the drainage tube 41 is connected to the liquid outlet pipeline 40, and the other end is used to discharge the uterine distension fluid in the patient's body.

[0040] Specifically, the infusion tube 21 and the inlet pipe 20 are connected via the inlet adapter 300 ; the discharge pipe 41 and the outlet pipe 40 are connected via the outlet adapter 400 . The inlet adapter 300 and the outlet adapter 400 are fixed on the second housing 121 .

[0041] The hand-held portion 110 and the inserting portion 120 are arranged at a certain angle.

[0042] The handheld part 110 includes a first shell 111 , and the infusion tube 21 and the drainage tube 41 are both located outside the first shell 111 to prevent pipeline leakage from causing short circuit of components inside the first shell 111 . The infusion tube 21 and the drainage tube 41 are symmetrically arranged on both sides of the first shell 111 .

[0043] The first flowmeter 7 is arranged on the infusion tube 21 for detecting the flow rate of the uterine distension fluid in the infusion tube 21, and the second flowmeter 8 is arranged on the discharge tube 41 for detecting the flow rate of the uterine distension fluid in the discharge tube 41, and the first flowmeter 7 and the second flowmeter 8 are symmetrically arranged on both sides of the first shell 111.

[0044] like Figure 3 As shown, a first receiving groove 112 for accommodating the infusion tube 21 and a second receiving groove (not shown) for accommodating the drainage tube 41 are formed on the first housing 111. The infusion tube 21 and the drainage tube 41 are both elastic hoses. The opening of the first receiving groove 112 has a first closing structure (not shown) to limit the infusion tube 21 to prevent the infusion tube 21 from being separated from the first receiving groove 112. The opening of the second receiving groove has a second closing structure (not shown) to limit the drainage tube 41 to prevent the drainage tube 41 from being separated from the second receiving groove. During installation, since the infusion tube 21 and the drainage tube 41 are both elastic hoses, they can be manually pressed into the corresponding receiving grooves, and the infusion tube 21 and the drainage tube 41 are limited by the closing structure to prevent the infusion tube 21 and the drainage tube 41 from being separated from the receiving grooves.

[0045] A first mounting groove 113 and a second mounting groove (not shown) are further formed on the first housing 111 . The first flow meter 7 is fixed in the first mounting groove 113 , and the second flow meter 8 is fixed in the second mounting groove.

[0046] like Figure 6 As shown, the hysteroscope also includes a cut-off component 200, which is integrated on the handheld part 110, and the cut-off component 200 is electrically connected to the processor 9 for cutting off the uterine distension fluid in the infusion tube 21 from flowing into the human body. When the processor 9 determines that the difference between the total amount of uterine distension fluid A and the total amount of uterine distension fluid B is greater than a preset value, the processor 9 outputs a signal to control the cut-off component 200 to start cutting off the infusion tube 21 and then cutting off the circuit of the uterine distension fluid in the infusion tube 21. The whole process does not require manual operation, reduces the surgical burden on doctors, has good timeliness, and avoids water poisoning caused by excessive infusion of uterine fluid.

[0047] like Figure 7 and Figure 8 As shown, specifically, the interception assembly 200 includes a motor 210, an eccentric wheel 220 and a cut-off block 230. The motor 210 is electrically connected to the processor 9. The eccentric wheel 220 is tightly sleeved on the output shaft 211 of the motor 210, and the eccentric wheel 220 is eccentrically arranged with the output shaft 211. One end of the cut-off block 230 abuts against the outer edge of the eccentric wheel 220, and the other end abuts against the infusion tube 21. When the motor 210 is started, the eccentric wheel 220 is driven to rotate. Since the eccentric wheel 220 is eccentrically arranged with the output shaft 211, the cut-off block 230 is driven to reciprocate between the first position and the second position during the rotation of the eccentric wheel 220. When the cut-off block 230 is located at the first position, the cut-off block 230 squeezes the infusion tube 21, thereby cutting off the circuit of the uterine distension fluid; when the cut-off block 230 is located at the second position, the uterine distension fluid in the infusion tube 21 flows in normally.

[0048] like Fig. 9 As shown, an annular groove 221 is formed on the outer edge of the eccentric wheel 220, and the cut-off block 230 is integrally formed and includes a driving rod 231 and a sliding block 232 connected to the end of the driving rod 231, and the sliding block 232 is located in the annular groove 221 and can slide relatively along the direction of the annular groove 221.

[0049] like Fig. 9 As shown, the opening of the annular groove 221 extends inward to form a limit baffle 222 , and the limit baffle 222 abuts against the sliding block 232 to prevent the sliding block 232 from falling off the annular groove 221 .

[0050] like Fig.10As shown, the sliding block 232 includes a main body portion 233 and a pair of contact portions 234 symmetrically arranged on both sides of the main body portion 233. The main body portion 233 is fixedly connected to the driving rod 231. The contact portion 234 is hemispherical, forming a recessed portion 223 formed by the side wall of the annular groove 221. The contact portion 234 is at least partially located in the recessed portion 223, and the shape of the recessed portion 223 is adapted to the shape of the contact portion 234, thereby reducing the friction loss between the sliding block 232 and the eccentric wheel 220.

[0051] Among them, the processor 9, the motor 210 and the eccentric wheel 220 are located inside the first shell 111, the infusion tube 21 is fixed on the outside of the first shell 111, the cut-off block 230 can be slidably arranged in the first shell 111, and the cut-off block 230 can at least partially pass through the first shell 111 and abut against the infusion tube 21.

[0052] like Figure 8 As shown, a sliding channel 114 is formed in the first shell 111 , and the cut-off block 230 is at least partially located in the sliding channel 114 and can slide back and forth along the direction of the sliding channel 114 .

[0053] The first housing 111 is formed with a first receiving groove 112 for accommodating the infusion tube 21, and the sliding channel 114 is connected to the first receiving groove 112. When the cut-off block 230 is located at the first position, the cut-off block 230 is partially located in the first receiving groove 112 and squeezes the infusion tube 21.

[0054] like Figure 8 As shown, a seal 240 is also fixed inside the first shell 111 , and the seal 240 is used to block the end of the sliding channel 114 away from the first receiving groove 112 , and a through hole 241 is opened on the seal 240 for the driving rod 231 of the cut-off block 230 to pass through.

[0055] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A hysteroscope, comprising a distension fluid bag (1), a fluid inlet pipeline (2), an infusion pump (3), a fluid outlet pipeline (4), a drainage pump (5) and a waste fluid collection bottle (6), wherein the fluid inlet pipeline (2) is connected to the distension fluid bag (1), and the infusion pump (3) is used to drive the distension fluid in the distension fluid bag (1) into the uterine cavity via the fluid inlet pipeline (2); the fluid outlet pipeline (4) is connected to the waste fluid collection bottle (6), and the drainage pump (5) is used to drive the distension fluid in the uterine cavity into the waste fluid collection bottle (6) via the fluid outlet pipeline (4); characterized in that: The hysteroscope further comprises: A first flow meter (7), arranged on the liquid inlet pipeline (2), and used to detect the flow rate of the uterine distension fluid in the liquid inlet pipeline (2); a second flow meter (8), arranged on the liquid outlet pipeline (4), and used to detect the flow rate of the uterine distension fluid in the liquid outlet pipeline (4); A processor (9), the processor (9) being electrically connected to both the first flow meter (7) and the second flow meter (8); The host computer (10) is electrically connected to the processor (9).

2. The hysteroscope according to claim 1, characterized in that: The first flow meter (7) comprises a Hall sensor (70), an impeller (71) and a pair of magnets (72), wherein the pair of magnets (72) are symmetrically arranged on the impeller (71); when the impeller (71) rotates, the pair of magnets (72) correspond to the Hall sensor (70) alternately, and the Hall sensor (70) is electrically connected to the processor (9).

3. The hysteroscope according to claim 2, characterized in that: The first flow meter (7) further comprises a housing (73), the housing (73) having a cavity (730) in sealed communication with the liquid inlet pipeline (2), and the impeller (71) is rotatably disposed in the cavity (730).

4. The hysteroscope according to claim 3, characterized in that: A rotating shaft (731) is convexly formed on the inner wall of the outer shell (73), and the impeller (71) can rotate around the rotating shaft (731).

5. The hysteroscope according to claim 2, characterized in that: The second flow meter (8) has the same structure as the first flow meter (7).

6. The hysteroscope according to claim 1, characterized in that: The liquid inlet pipeline (2) comprises a liquid inlet pipeline (20) and a liquid infusion pipeline (21) which are interconnected, the liquid outlet pipeline (4) comprises a liquid outlet pipeline (40) and a liquid discharge pipeline (41) which are interconnected, the hysteroscope further comprises a handheld device (100), the handheld device (100) comprises a handheld portion (110) and an insertion portion (120) which is arranged at a certain angle to the handheld portion (110), the insertion portion (120) comprises a second shell (121) and an insertion tube (122) which is arranged on the second shell (121), the insertion tube (122) being provided with the liquid inlet pipeline (20) and the liquid outlet pipeline (40) passing through along its axial direction, the liquid infusion pipeline (21) and the liquid discharge pipeline (41) being arranged on the outside of the handheld portion (110).

7. The hysteroscope according to claim 6, characterized in that: The handheld part (110) comprises a first shell (111), and the infusion tube (21) and the drainage tube (41) are symmetrically arranged on both sides of the first shell (111).

8. The hysteroscope according to claim 7, characterized in that: The first flow meter (7) is arranged on the liquid infusion tube (21), the second flow meter (8) is arranged on the liquid discharge tube (41), and the first flow meter (7) and the second flow meter (8) are symmetrically arranged on both sides of the first housing (111).

9. The hysteroscope according to claim 8, characterized in that: The first housing (111) is formed with a first receiving groove (112) for accommodating the infusion tube (21) and a second receiving groove for accommodating the drainage tube (41); the infusion tube (21) and the drainage tube (41) are both elastic hoses; the opening of the first receiving groove (112) has a first closing structure for limiting the position of the infusion tube (21); and the opening of the second receiving groove has a second closing structure for limiting the position of the drainage tube (41).

10. The hysteroscope according to claim 9, characterized in that: A first mounting groove (113) and a second mounting groove are also formed on the first housing (111); the first flow meter (7) is fixed in the first mounting groove (113), and the second flow meter (8) is fixed in the second mounting groove.

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