Hysteroscope

Abstract

The hysteroscope comprises a handheld device, an infusion tube, a drainage tube, a first flow meter, a second flow meter, a processor and a cut-off assembly, the handheld device comprises a handheld part and an insertion part connected with the handheld part, and the insertion part comprises a second shell and an insertion tube arranged on the second shell; a liquid inlet pipeline and a liquid outlet pipeline penetrate through the insertion pipe in the axial direction; the infusion tube is fixed on the handheld part, one end of the infusion tube is connected to the liquid inlet pipeline, and the other end is connected with an infusion pump; one end of the liquid discharge pipe is connected to the liquid outlet pipeline, and the other end is used for discharging uterine distention liquid in the body of the patient; the processor is electrically connected with the first flow meter and the second flow meter at the same time; the cut-off assembly is integrated on the handheld part, and the cut-off assembly is electrically connected with the processor and used for cutting off the uterine distention liquid in the infusion tube from flowing into the human body. The device can be automatically started to cut off a loop in an infusion tube when excessive uterine fluid is input, so that the operation burden of a doctor is reduced, the timeliness is good, and water poisoning of a patient caused by excessive uterine fluid input is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of hysteroscopes, and 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] In the prior art, a cut-off clamp is installed on the infusion tube. When the doctor determines that the uterine distension fluid has been excessively infused, the doctor needs to manually press the cut-off clamp to cut off the loop in the infusion tube. However, during the operation, the doctor is likely to ignore the amount of uterine distension fluid infused. Even if the doctor discovers the problem of excessive uterine distension fluid in time, the doctor is still required to manually cut it off, which increases the doctor's surgical burden and has poor timeliness, and is likely to cause excessive uterine fluid to cause water intoxication in the patient. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a hysteroscope which can automatically start to cut off the loop in the infusion tube when an excessive amount of uterine fluid is infused, thereby reducing the surgical burden on doctors, improving timeliness, and preventing patients from water intoxication due to excessive uterine fluid infusion.

[0006] The present invention is achieved through the following technical solutions: A hysteroscope, comprising: A handheld device, comprising a handheld portion and an insertion portion connected to the handheld portion, wherein the insertion portion comprises a second shell and a cannula arranged on the second shell, wherein the cannula is provided with the liquid inlet pipe and the liquid outlet pipe along its axial direction; An infusion tube, wherein the infusion tube is fixed to the handheld portion, one end of the infusion tube is connected to the liquid inlet pipeline, and the other end is connected to an infusion pump; A drainage tube, one end of which is connected to the liquid outlet pipe, and the other end of which is used to discharge the uterine distension fluid in the patient's body; A first flow meter, arranged on the infusion tube, for detecting the flow rate of the uterine distension fluid in the infusion tube; A second flow meter, disposed on the drainage pipe, for detecting the flow rate of the uterine distension fluid in the drainage pipe; a processor, the processor being electrically connected to the first flow meter and the second flow meter at the same time; A cut-off component is integrated on the handheld portion and is electrically connected to the processor to cut off the flow of uterine distension fluid in the infusion tube into the human body.

[0007] Furthermore, the cut-off assembly includes a motor, an eccentric wheel and a cut-off block, the motor is electrically connected to the processor, the eccentric wheel is fastened on the output shaft of the motor, and the eccentric wheel is eccentrically arranged on the output shaft, one end of the cut-off block abuts against the outer edge of the eccentric wheel, and the other end abuts against the infusion tube.

[0008] Furthermore, an annular groove is formed on the outer edge of the eccentric wheel, the cut-off block is integrally formed and includes a driving rod and a sliding block connected to the end of the driving rod, the sliding block is located in the annular groove and can slide relatively along the direction of the annular groove.

[0009] Furthermore, the opening of the annular groove extends inwardly to form a limit baffle, and the limit baffle abuts against the sliding block to prevent the sliding block from falling off the annular groove.

[0010] Furthermore, the sliding block includes a main body and a pair of contact parts symmetrically arranged on both sides of the main body, the main body is fixedly connected to the driving rod, the contact part is hemispherical, and the side wall of the annular groove is concave to form a recessed part, the shape of the recessed part is adapted to the shape of the contact part, and the contact part is at least partially located in the recessed part.

[0011] Furthermore, the handheld part includes a first shell, the processor, the motor and the eccentric wheel are located inside the first shell, the infusion tube is fixed on the outside of the first shell, the cut-off block can be slidably disposed in the first shell, and the cut-off block can at least partially pass through the first shell and abut against the infusion tube.

[0012] Furthermore, a sliding channel is formed in the first shell, and the cutoff block is at least partially located in the sliding channel and can slide back and forth along the direction of the sliding channel.

[0013] Furthermore, a first receiving groove for accommodating the infusion tube is formed on the first shell, and the sliding channel is connected to the first receiving groove.

[0014] Furthermore, a sealing member is fixed inside the first shell, and the sealing member is used to seal the end of the sliding channel away from the first receiving groove, and a through hole is formed on the sealing member for the driving rod of the cut-off block to pass through.

[0015] Furthermore, the infusion tube is an elastic hose, and the opening of the first receiving groove has a first closing structure to limit the infusion tube.

[0016] Compared with the prior art, the advantages of the present invention are: By setting up a cut-off component, when the processor 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 outputs a signal to control the cut-off component to start cutting off the infusion tube and then cutting off the circuit of the uterine distension fluid in the infusion tube. The entire process does not require manual operation, which reduces the doctor's surgical burden, improves timeliness, and prevents patients from water poisoning due to excessive infusion of uterine fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the pipeline structure of the hysteroscope; Figure 2 is a schematic diagram of the structure of the handheld device; Figure 3 It is a partial structural schematic diagram of the handheld part; Figure 4 It is a partial structural schematic diagram of the flow meter; Figure 5 This is the circuit diagram of the hysteroscope; Figure 6 Schematic diagram of the local structure of the handheld part Figure 1 ; Figure 7 Schematic diagram of the local structure of the handheld part Figure 2 ; Figure 8 It is a partial structural cross-sectional view of the handheld part; Fig. 9 It is a partial structural schematic diagram of the interception component; Fig.10 Schematic diagram of the cutoff block structure.

[0018] 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

[0019] The following is a further non-restrictive detailed description of the technical solution of the invention in conjunction with the preferred embodiments and the accompanying drawings. In the description of the present invention, 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 present invention, 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 present invention, and cannot be understood as limitations on the present invention.

[0020] like Figure 1-Figure 10 As shown, a hysteroscope according to an embodiment of the present invention 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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 .

[0026] The hand-held portion 110 and the inserting portion 120 are arranged at a certain angle.

[0027] 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 .

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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. The sliding block 232 is located in the annular groove 221 and can slide relatively along the direction of the annular groove 221.

[0034] 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 .

[0035] 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.

[0036] 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.

[0037] 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 .

[0038] 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.

[0039] 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.

[0040] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. 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 present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A hysteroscope, characterized in that: include: A handheld device (100), the handheld device (100) comprising a handheld portion (110) and an insertion portion (120) connected to the handheld portion (110), the insertion portion (120) comprising a second shell (121) and an insertion tube (122) arranged on the second shell (121), the insertion tube (122) being provided with a liquid inlet pipe (20) and a liquid outlet pipe (40) extending through the insertion tube (122) along its axial direction; An infusion tube (21), the infusion tube (21) being fixed on the handheld portion (110), with one end of the infusion tube (21) being connected to the liquid inlet pipeline (20) and the other end being connected to an infusion pump (3); A drainage tube (41), one end of which is connected to the liquid outlet pipe (40), and the other end of which is used to discharge uterine distension fluid in the patient's body; a first flow meter (7), arranged on the infusion tube (21), and used to detect the flow rate of the uterine distension fluid in the infusion tube (21); a second flow meter (8), arranged on the drainage pipe (41), and used to detect the flow rate of the uterine distension fluid in the drainage pipe (41); A processor (9), the processor (9) being electrically connected to both the first flow meter (7) and the second flow meter (8); a flow cut-off component (200), the flow cut-off component (200) being integrated on the handheld portion (110), and the flow cut-off component (200) being electrically connected to the processor (9) for cutting off the flow of uterine distension fluid in the infusion tube (21) into the human body; The cut-off assembly (200) comprises 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 an output shaft (211) of the motor (210); the eccentric wheel (220) and the output shaft (211) are eccentrically arranged; one end of the cut-off block (230) abuts against an 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. During the rotation of the eccentric wheel (220), the cut-off block (230) is driven to reciprocate between a first position and a second position. 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; The handheld part (110) comprises a first shell (111), the processor (9), the motor (210) and the eccentric wheel (220) are located inside the first shell (111), the infusion tube (21) is fixed to the outside of the first shell (111), the cut-off block (230) is slidably arranged in the first shell (111), and at least a part of the cut-off block (230) can pass through the first shell (111) and abut against the infusion tube (21); 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); A first receiving groove (112) for accommodating the infusion tube (21) is formed on the first housing (111), the sliding channel (114) is in communication with the first receiving groove (112), and 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); The infusion tube (21) is an elastic hose, and the opening of the first receiving groove (112) has a first closing structure to limit the position of the infusion tube (21).

2. The hysteroscope according to claim 1, characterized in that: An annular groove (221) is formed on the outer edge of the eccentric wheel (220); the cut-off block (230) is integrally formed and comprises a driving rod (231) and a sliding block (232) connected to the end of the driving rod (231); the sliding block (232) is located in the annular groove (221) and can slide relatively along the direction of the annular groove (221).

3. The hysteroscope according to claim 2, characterized in that: The opening of the annular groove (221) extends inwardly to form a limit baffle (222), and the limit baffle (222) abuts against the sliding block (232) to prevent the sliding block (232) from escaping from the annular groove (221).

4. The hysteroscope according to claim 2, characterized in that: The sliding block (232) comprises a main body (233) and a pair of contact portions (234) symmetrically arranged on both sides of the main body (233); the main body (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 shape of the recessed portion (223) matches the shape of the contact portion (234), and the contact portion (234) is at least partially located in the recessed portion (223).

5. The hysteroscope according to claim 1, characterized in that: A sealing member (240) is also fixed inside the first shell (111), and the sealing member (240) is used to seal an end of the sliding channel (114) away from the first receiving groove (112), and the sealing member (240) is provided with a through hole (241) for the driving rod (231) of the cut-off block (230) to pass through.

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