Hysteroscope

Abstract

The utility model discloses a hysteroscope. The hysteroscope further comprises a lining tube, the lining pipe comprises a front-end flexible pipe and a lining steel pipe which are sequentially connected, and the lining steel pipe can freely rotate relative to the front-end flexible pipe; one end, close to the camera, of the front-end flexible tube is fixedly connected with the front end head; the lining steel pipe is fixedly connected with a knob; the part, close to the camera, of the outer hose deviates from the center line of the knob by an included angle, and the part, corresponding to the outer hose, of the front-end flexible pipe also deviates from the center line of the knob by a corresponding angle; when the lining steel pipe rotates, the front-end flexible pipe does not rotate, the end portion of the outer hose and the front end head fixedly connected with the end portion of the outer hose swing with the center line of the rotary knob as the axis, and the position of the camera relative to the jaw opening is kept unchanged all the time so that the image visual angle can be kept constant.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and specifically relates to a hysteroscope. Background Art

[0002] Hysteroscope is a commonly used medical device in obstetrics and gynecology. It can clearly observe various lesions in the uterine cavity and assist medical staff in effectively diagnosing and treating diseases in the uterine cavity. The camera used in traditional hysteroscopes will rotate with the rotation of the operating handle, which will cause the image angle observed by the doctor to change accordingly with the rotation of the camera. The field of view cannot be always maintained during the operation, which affects the doctor's surgical experience and increases the difficulty of the doctor's operation.

[0003] After searching, it was found that the Chinese utility model patent document (application number is 2022203764267) discloses an endoscope, including a front end head, a flexible connector and a rotating member, the flexible connector is provided with a first inner cavity, the front end head is fixedly arranged at one end of the flexible connector, the flexible connector is sleeved on one end of the rotating member, one end of the rotating member passes through the other end of the flexible connector, and one end of the rotating member extends into the first inner cavity. When the rotating member rotates, one end of the rotating member is located in the first inner cavity and rotates, one end of the rotating member drives the flexible connector to swing around the rotation axis of the rotating member, and the front end head swings with the flexible connector.

[0004] The above solution can solve the problem in the related art that the endoscope camera cannot achieve field of view change in the surgical cavity, resulting in poor work efficiency of medical personnel. Although this technical solution can solve the problem of endoscope angle orientation, the structure is relatively complex. The utility model provides another simpler and more convenient technical solution to solve the problem of hysteroscope camera being difficult to orient. Utility Model Content

[0005] 1. Technical problems to be solved by the utility model

[0006] The purpose of the utility model is to solve the problem of the difficulty in orienting a hysteroscopic camera in a simpler and more convenient way, so that the image presented by the hysteroscopic camera during the operation always maintains a relatively fixed angle and does not change with the rotation of the operating knob.

[0007] 2. Technical solution

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A hysteroscope of the present invention comprises an outer hose, a front end head fixedly connected to the end of the outer hose, and a camera fixed on the front end head, and the hysteroscope also comprises an inner lining tube;

[0010] The lining tube includes a front flexible tube and a lining steel tube connected in sequence, wherein the lining steel tube can rotate freely relative to the front flexible tube; an end of the front flexible tube close to the camera is fixedly connected to the front head; and a knob is fixedly connected to the lining steel tube;

[0011] The portion of the outer hose (1) close to the camera is offset from the center line of the knob by an angle, and the front end flexible tube corresponding to the portion of the outer hose is also offset from the center line of the knob by a corresponding angle;

[0012] When the inner lining steel pipe rotates, the front flexible pipe does not rotate, and the end of the outer hose and the front end head fixedly connected thereto swing around the center line of the knob, and the position of the camera relative to the clamp opening remains unchanged to keep the image viewing angle constant.

[0013] Furthermore, the outer hose is a pebax braided tube, and the front flexible tube is a TPU tube.

[0014] Furthermore, the angle of the outer hose near one end of the camera deviating from the center line of the knob is 14° to 18°.

[0015] Furthermore, the length of the outer hose at the end close to the camera and deviating from the center line of the knob is 20 mm to 30 mm.

[0016] Furthermore, the hysteroscope also includes a water valve, which is provided with a water inlet and a water outlet. The front end head is provided with a clamp channel and a drain port, and the clamp channel can also be used for water intake. An instrument channel is formed inside the inner lining steel pipe, and the instrument channel is connected with the water inlet and can be used for water intake. A water outlet channel is also provided between the outer hose and the inner lining steel pipe; water is taken in through the water inlet, the instrument channel, and the clamp channel in turn, and water is discharged outward through the drain port, the water outlet channel, and the water outlet.

[0017] Furthermore, the number of the drain outlet and the number of the water outlet channels are two each.

[0018] Furthermore, the size of the clamp opening is larger than the size of the drain opening.

[0019] Furthermore, the water valve is also provided with a sealing ring.

[0020] Furthermore, the outer wall of one end of the front flexible tube away from the camera is smooth and has a clearance fit in the inner lining steel tube.

[0021] 3. Beneficial effects

[0022] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0023] (1) The utility model of the hysteroscope, the inner lining tube comprises a front end flexible tube and an inner lining steel tube, the end of the front end flexible tube close to the camera is fixedly connected to the front end head, the outer wall of the end of the front end flexible tube away from the camera is smooth and the clearance fits in the inner lining steel tube, the inner lining steel tube can rotate freely relative to the front end flexible tube, the other end of the inner lining steel tube is fixedly connected to the knob, the outer hose is a flexible tube, the end of the outer hose close to the camera is preset with a certain length and deviates from the center line of the knob by a predetermined angle, and the inner lining steel tube corresponding to the outer hose also deviates from the center line of the knob by a corresponding angle, when the inner lining steel tube rotates, the front end flexible tube does not rotate, the end of the outer hose and the front end head fixedly connected thereto swing around the center line of the knob, and the position of the camera relative to the clamp opening remains unchanged to keep the image viewing angle constant.

[0024] (2) The hysteroscope of the utility model also includes a water valve, which is provided with a water inlet and a water outlet. The front end head is provided with a clamp channel and a drain port, and the clamp channel can also be used for water inlet. An instrument channel is formed inside the inner lining steel pipe, and the instrument channel is connected to the water inlet and can be used for water inlet. A water outlet channel is also provided between the outer hose and the inner lining steel pipe, and water is inletted through the water inlet, the instrument channel, and the clamp channel in sequence, and water is drained out through the drain port, the water outlet channel, and the water outlet. The water inlet and the drain port are separated to ensure that water inlet and water outlet can be carried out simultaneously during surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front cross-sectional schematic diagram of an embodiment of the utility model;

[0026] Figure 2 It is a partial structural schematic diagram of an embodiment of the utility model;

[0027] Figure 3 It is another partial structural schematic diagram of an embodiment of the utility model;

[0028] Figure 4 This is a schematic diagram of the water inlet route of an embodiment of the utility model;

[0029] Figure 5 This is a schematic diagram of the water outlet route of an embodiment of the utility model;

[0030] Figure 6 It is a schematic diagram of the end position relationship structure of an embodiment of the utility model.

[0031] Explanation of the numbers in the schematic diagram: 1. External hose, 2. Instrument channel (water inlet channel), 3. Front end flexible tube, 4. Lined steel pipe, 5. Water outlet channel, 6. Front end head, 7. Clamp opening, 8. Drain outlet, 9. LED light source, 10. Camera, 11. Camera connecting harness, 12. Water valve, 13. Water inlet, 14. Water outlet, 15. Sealing ring, 16. Knob. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution of the present utility model is clearly and completely described below in conjunction with the accompanying drawings.

[0033] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification, and are not used to limit the restrictive conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical contents disclosed by the utility model. At the same time, the terms such as "inside" and "outside" quoted in this specification are only for the convenience of description, and are not used to limit the scope of implementation. The change or adjustment of their relative relationship should also be regarded as the scope of implementation of the utility model without substantial change of the technical content.

[0034] A hysteroscope of the utility model comprises an outer hose 1, a front end head 6 fixedly connected to the end of the outer hose, and a camera 10 fixed on the front end head. The hysteroscope also comprises an inner lining tube, the inner lining tube comprises a front end flexible tube 3 and an inner lining steel tube 4, wherein the inner lining steel tube 4 can rotate freely relative to the front end flexible tube 3, the end of the front end flexible tube 3 close to the camera is fixedly connected to the front end head 6, and the inner lining steel tube 4 is fixedly connected with a knob 16.

[0035] The portion of the outer hose 1 near the camera deviates from the center line of the knob 16 by an angle, and the front flexible tube 3 corresponding to the outer hose 1 also deviates from the center line of the knob 16 by a corresponding angle.

[0036] When the inner lining steel pipe 4 rotates, the front flexible pipe 3 does not rotate, and the end of the outer hose 1 and the front end head 6 fixedly connected thereto swing around the center line of the knob 16, and the position of the camera 10 relative to the clamp opening 7 remains unchanged to keep the image viewing angle constant.

[0037] At least a portion of the lining steel pipe 4 matched with the front flexible pipe 3 deviates from the predetermined angle relative to the center line of the knob 16. Since there is a gap between the lining steel pipe 4 and the front flexible pipe 3, the outer wall of the front flexible pipe 3 is smooth, and the lining steel pipe 4 does not drive the front flexible pipe 3 to rotate synchronously during rotation. The lining steel pipe 4 is tilted at a certain angle, and when the lining steel pipe 4 rotates, it can drive the front flexible pipe, the camera and the front head to swing, and the position of the camera 10 relative to the clamp opening 7 remains unchanged to keep the image viewing angle constant.

[0038] The outer hose 1 is a flexible tube. The outer hose 1 at one end close to the camera is preset to have a certain length and deviates from the center line of the knob 16 by a predetermined angle. The front end flexible tube 3 corresponding to the outer hose 1 deviates from the center line of the knob 16 by a corresponding angle.

[0039] Of course, the front end 6 is also provided with an LED light source for lighting, and a camera connection harness 11 is also arranged between the outer hose 1 and the inner lining steel pipe 4 for connecting a camera. As for the arrangement method, it belongs to the conventional technology in this field and will not be described in detail.

[0040] Its basic working process is that when the knob 16 is turned, the inner lining steel tube 4 rotates accordingly. Since there is a certain gap between the inner lining steel tube 4 and the front end flexible tube 3, the front end flexible tube 3 will not rotate with the rotation of the inner lining steel tube 4. Because the outer hose 1 is inclined at a certain angle relative to the center line of the knob 16, the inclined part will swing with the rotation of the inner lining steel tube 4, and the front end head 6 will also swing accordingly. The camera 10 will swing along with it, but the positional relationship between the camera 10 and the forceps opening 7 remains unchanged. In this way, the observation angle of medical staff during the operation will not be inverted or tilted, creating a relatively friendly environment for medical staff to perform the operation smoothly.

[0041] Preferably, the outer hose 1 is a pebax braided tube, which is an engineering polymer with a wide hardness range and good resilience. The front flexible tube 3 is a TPU tube, also known as polyurethane, which can soften at a certain temperature and remain unchanged at room temperature, and is known as a green environmentally friendly material.

[0042] It should be further explained that the angle of the outer hose 1 near the end of the camera deviating from the center line of the knob 16 is 14° to 18°. Due to the limitation of the working environment, the angle of the outer hose 1 should not be too large or too small. If the angle of deviation is too small, the camera's shooting range will be limited and it will be difficult to meet the surgical requirements. In practice, it is generally controlled at 16°±2°, and 16° is preferred for the best effect.

[0043] In addition, the length of the outer hose 1 near the camera end that deviates from the center line of the knob 16 ranges from 20 mm to 30 mm, which is neither too long nor too short, and is generally controlled at 25 mm ± 5 mm, preferably 25 mm.

[0044] The hysteroscope also includes a water valve 12, which is provided with a water inlet 13 and a water outlet 14. The front end 6 is provided with a clamp channel 7 and a drain 8, and the clamp channel 7 can also be used for water inlet. An instrument channel 2 is formed inside the inner lining steel pipe 4, and the instrument channel 7 is connected to the water inlet 13 and can be used for water inlet. A water outlet channel 5 is also provided between the outer hose 1 and the inner lining steel pipe 4, and water is inletted through the water inlet 13, the instrument channel 2, and the clamp channel 7 in sequence, and water is drained out through the drain 8, the water outlet channel 5, and the water outlet 14. The water inlet and the drain are separated to ensure that water can be inletted and drained at the same time during surgery. The water valve 12 is also provided with a sealing ring 15, which can effectively prevent liquid leakage.

[0045] Although the instrument channel 7 is also used for water intake, and there is a gap between the instrument channel 7 and the front flexible tube 3, due to the pressure in the human body, the aperture of the middle instrument channel 7 is much larger than the gap between the instrument channel and the front flexible tube 3. Water will flow into the body through the large hole (instrument channel 7) instead of flowing into the body from the gap between the instrument channel and the front flexible tube 3.

[0046] Preferably, there are two drain ports 8 and two water outlet channels 5. The drain ports 8 are respectively arranged on both sides of the forceps opening 7. This symmetrical arrangement helps to maintain relative balance during the swinging of the front end head 6. The water outlet channel 5 can also be set to one. The liquid discharged from the two drain ports 8 converges in the water outlet channel, which can save the number of water outlet channels 5. As for the connection method between the two drain ports and the one water outlet channel 5, it also belongs to the conventional setting in this field and need not be elaborated. The size of the forceps opening 7 is larger than the size of the drain port 8. It is more convenient to discharge the liquid without too much liquid in the body, which ensures the smooth progress of the operation.

[0047] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. If a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, and does not creatively design a structure similar to the present technical solution, it shall fall within the protection scope of the present invention.

Claims

1. A hysteroscope, comprising an outer hose (1), a front end head (6) fixedly connected to the end of the outer hose, and a camera head (10) fixed to the front end head, characterized in that: The hysteroscope also includes an inner lining tube; The lining tube comprises a front flexible tube (3) and a lining steel tube (4) which are connected in sequence, wherein the lining steel tube (4) can rotate freely relative to the front flexible tube (3); an end of the front flexible tube (3) close to the camera is fixedly connected to the front head (6); and a knob (16) is fixedly connected to the lining steel tube (4); The portion of the outer hose (1) close to the camera is offset from the center line of the knob (16) by an angle, and the front flexible tube (3) corresponding to the portion of the outer hose (1) is also offset from the center line of the knob (16) by a corresponding angle; When the inner lining steel pipe (4) rotates, the front flexible pipe (3) does not rotate, the end of the outer hose (1) and the front end head (6) fixedly connected thereto swing around the center line of the knob (16) as the axis, and the position of the camera (10) relative to the clamp opening (7) remains unchanged to keep the image viewing angle constant.

2. The hysteroscope according to claim 1, characterized in that: The outer hose (1) is a pebax braided tube, and the front flexible tube (3) is a TPU tube.

3. The hysteroscope according to claim 1, characterized in that: The angle of the outer hose (1) near one end of the camera head deviating from the center line of the knob (16) is 14° to 18°.

4. The hysteroscope according to claim 3, characterized in that: The length of the outer hose (1) which is close to the camera end and deviates from the center line of the knob (16) is 20 mm to 30 mm.

5. The hysteroscope according to claim 1, characterized in that: The hysteroscope further comprises a water valve (12) on which a water inlet (13) and a water outlet (14) are arranged. The front end head (6) is provided with a clamp opening (7) and a drain opening (8). The clamp opening (7) can also be used for water intake. An instrument channel (2) is formed inside the inner lining steel pipe (4). The instrument channel (2) is connected to the water inlet (13) and can be used for water intake. A water outlet channel (5) is also arranged between the outer hose (1) and the inner lining steel pipe (4). Water is taken in through the water inlet (13), the instrument channel (2) and the clamp opening (7) in sequence, and water is discharged to the outside through the drain opening (8), the water outlet channel (5) and the water outlet (14).

6. The hysteroscope according to claim 5, characterized in that: The number of the water outlet (8) and the number of the water outlet channels (5) are two each.

7. The hysteroscope according to claim 6, characterized in that: The size of the clamp opening (7) is larger than the size of the drain opening (8).

8. The hysteroscope according to claim 6, characterized in that: The water valve (12) is also provided with a sealing ring (15).

9. The hysteroscope according to any one of claims 1 to 8, characterized in that: The outer wall of one end of the front flexible tube (3) away from the camera is smooth and has a clearance fit in the inner lining steel tube (4).

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