Medical visual guiding device

Abstract

The utility model discloses a medical visual guiding device which comprises a guide pipe and an end cover arranged at the end of the guide pipe, and a flange is arranged between the guide pipe and the end cover. The conduit, the flange and the end cover are jointly provided with a lens cavity for transmitting an image, an operation cavity for an instrument to pass through and two fluid cavities for liquid to enter and exit along the axial direction, and the conduit is also provided with a plurality of guide cavities for a traction rope to pass through along the axial direction; a plurality of limiting grooves which correspond to the guide cavities and are used for limiting the traction rope are formed in the flange, and limiting balls located in the limiting grooves are arranged at the ends of the traction rope. The flange has the advantages that the flange is made of metal, and abrasion resistance and supporting performance are higher.

Description

Technical Field

[0001] The utility model belongs to the medical field, especially the medical device field, and specifically relates to a medical visual guiding device. Background Art

[0002] In minimally invasive surgery, it is usually necessary to use slender instruments to pass through the body cavities of patients, and high precision is required. Therefore, some endoscopic devices need to be used to observe the diseased parts of patients. This device needs to include working cavities for liquid (gas) inlet and outlet, data transmission, lighting, direction deflection device, and access for treatment instruments, making it difficult to achieve a smaller outer diameter. Generally, its diameter exceeds 5 mm, which makes it impossible to directly perform visual diagnosis and treatment operations on narrow cavities such as bile ducts or pancreatic ducts. Content of the Utility Model

[0003] The purpose of the utility model is to provide a medical visual guiding device.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A medical visual guiding device includes a catheter and an end cap arranged at the end of the catheter. A flange is arranged between the catheter and the end cap. The catheter, the flange, and the end cap are jointly provided with a lens cavity for transmitting images, an operation cavity for instruments to pass through, and two fluid cavities for liquid inlet and outlet along their axial directions. The catheter is also provided with a plurality of guiding cavities for traction ropes to pass through along its axial direction. The flange is provided with a plurality of limiting grooves corresponding to the guiding cavities for restricting the traction ropes. The end of the traction rope is provided with a limiting ball located in the limiting groove.

[0006] Preferably, the limiting groove includes a receiving cavity for receiving the limiting ball and a connecting cavity for communicating the receiving cavity and the guiding cavity. The diameter of the connecting cavity is smaller than the diameter of the limiting ball.

[0007] Preferably, the part of the receiving groove close to the outer side of the flange extends outward to penetrate the side wall of the flange.

[0008] Preferably, the plurality of guiding cavities are distributed circumferentially.

[0009] Preferably, a sheath is sleeved on the outer peripheral wall of the catheter. The end of the catheter close to the flange protrudes from the sheath. The side of the end cap facing the sheath is provided with a groove and is sleeved on the flange and the catheter through the groove. The outer diameter of the end cap is the same as the outer diameter of the sheath.

[0010] Preferably, the catheter is connected to the end cap and the sheath by gluing.

[0011] Preferably, both sides of the lens cavity located on the end cap are recessed outward to form recessed grooves for accommodating the camera, and clamping blocks are arranged on both sides of the camera and located in the recessed grooves.

[0012] Preferably, the end face of the end cap away from the catheter includes a flat area and a curved surface area, and the flat area smoothly transitions towards the catheter through the curved surface area, and the camera is arranged on the flat area.

[0013] The beneficial effects of the present utility model are as follows: By arranging a flange between the end cap and the catheter, during the turning process of the device, the limiting ball continuously rubs against the flange. The flange is made of metal, which has high wear resistance and increases the service life. At the same time, the metal flange provides stronger support for the bending of the entire device. The flange is a split design with the catheter and the end cap, which is convenient for replacement. The outer surface of the entire device has a smooth transition without edges and corners, reducing the damage to the internal cavity of the human body. At the same time, the array distribution of the guide grooves facilitates the control of turning. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the present utility model.

[0015] Figure 2 is a schematic structural diagram of the present utility model after removing the end cap.

[0016] Figure 3 is a schematic structural diagram of the present utility model after removing the end cap and the flange.

[0017] Among them: catheter 10, end cap 12, flange 14, lens cavity 16, operation cavity 18, fluid cavity 20, guide cavity 22, traction rope 24, limiting ball 26, limiting groove 28, recessed groove 30, sheath 32. Detailed Description of the Invention

[0018] The technical solutions of this patent will be further described in detail below in conjunction with the specific embodiments.

[0019] Such as Figures 1 to 3As shown, a medical visualization guide device of the present invention comprises a catheter 10 and an end cap 12 arranged at the end of the catheter 10, a flange 14 is arranged between the catheter 10 and the end cap 12, and the catheter 10, the flange 14 and the end cap 12 are jointly provided with a lens cavity 16 for transmitting images, an operation cavity 18 for passing instruments and two fluid cavities 20 for entering and exiting liquids along their axial direction, the lens cavity 16 is used for a camera and a wire connecting the camera for transmitting images, LED lights or optical fibers are arranged on both sides of the camera for lighting, and the guide The tube 10 is provided with a plurality of guide cavities 22 along its axial direction for the traction rope 24 to pass through, and the flange 14 is provided with a plurality of limit grooves 28 corresponding to the guide cavities 22 for limiting the traction rope 24. The end of the traction rope 24 is provided with a limit ball 26 located in the limit groove 28. The steering of the flange 14 and the end cover 12 is controlled by controlling the force of the traction rope 24. The flange 14 is made of metal, which has high wear resistance, can reduce damage caused by friction, extend service life, and can also provide higher support for the bending of the entire device.

[0020] The limiting groove 28 includes a accommodating cavity for accommodating the limiting ball 26 and a connecting cavity for connecting the accommodating cavity and the guide cavity 22. The diameter of the connecting cavity is smaller than the diameter of the limiting ball 26. The limiting ball 26 applies a force to the flange 14 to make it turn, so that the entire device can move forward along the cavity inside the human body. The smaller diameter of the connecting cavity can limit the limiting ball 26 and prevent it from entering the guide cavity 22.

[0021] The portion of the accommodating groove close to the outer side of the flange 14 extends outward to the side wall that passes through the flange 14; the diameter of the accommodating cavity is adapted to the diameter of the limiting ball 26, and the diameter of the flange 14 is reduced as much as possible and the limiting ball 26 is limited, so that the limiting ball 26 is not easy to shake in the accommodating groove. When the traction rope 24 is pulled, the pulling distance of the traction rope 24 can be better controlled. The accommodating groove extends to the side wall that passes through the flange 14, which makes it more convenient and quick to replace the traction rope 24.

[0022] Several guide cavities 22 are distributed along the circumference, preferably four, and the four guide cavities 22 are distributed in a circular array, wherein two relative guide cavities 22 are in opposite directions to the center of the flange 14, so that the traction ropes 24 in the two guide cavities 22 can offset each other when subjected to force and do not change the direction of their combined force, which is convenient for control.

[0023] A sheath 32 is sleeved on the outer peripheral wall of the catheter 10, and the sheath 32 plays a protective role for the catheter 10. The end of the catheter 10 close to the flange 14 protrudes from the sheath 32. A groove is formed on one side of the end cap 12 facing the sheath 32, and the end cap 12 is sleeved on the flange 14 and the catheter 10 through the groove. The catheter 10 is connected to the end cap 12 and the sheath 32 by gluing. The depth of the groove is equal to the sum of the length that the catheter 10 protrudes from the sheath 32 and the thickness of the flange 14. After the end cap 12 is completely sleeved on the catheter 10 and fixed by gluing, the position of the flange 14 is also fixed accordingly and is not prone to deviation. The outer diameter of the end cap 12 is the same as the outer diameter of the sheath 32, making the outer surface of the entire device smoother and reducing damage to the human body's cavity.

[0024] Depression grooves 30 are formed by the two sides of the lens cavity 16 recessing outward. Blocks are arranged on both sides of the camera and are located in the depression grooves 30. The blocks are clamped in the depression grooves 30 so that the camera is not prone to displacement, playing a fixing role for the camera. The outer shell of the camera is rectangular, and the blocks are located on its opposite sides. LED lights or optical fibers for illumination are arranged on the other two sides.

[0025] The end face of the end cap 12 away from the catheter 10 includes a limit groove 28 and an arc surface area. The limit groove 28 smoothly transitions towards the catheter 10 through the arc surface area. The camera is arranged in the limit groove 28; through the curved surface area, the entire end cap 12 transitions more smoothly, reducing damage to the human body's cavity. Usually, the outer shell of the camera is cubic. Placing it in the curved surface area easily causes the outer shell of the camera to protrude from the limit groove 28, generating edges and corners that can damage the human body's cavity. If the camera is placed inside the lens cavity 16, although there will be no protruding parts, due to the divergent imaging direction of the camera, the outer shell at the lens cavity 16 will interfere with imaging and reduce the imaging area. Placing the camera in the limit groove 28 will have no protruding parts, and the limit groove 28 can be smoothly transitioned through the arc surface area and rounded corners, and it is not easy to cause damage to the human body.

[0026] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0027] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A medical visualization guiding device, characterized in that: It includes a catheter and an end cap arranged at the end of the catheter, a flange is arranged between the catheter and the end cap, and the catheter, flange and end cap are jointly provided with a lens cavity for transmitting images, an operation cavity for instruments to pass through and two fluid cavities for liquid in and out along their axial direction. The catheter is also provided with a plurality of guide cavities for traction ropes to pass through along its axial direction, and the flange is provided with a plurality of limit grooves corresponding to the guide cavities for limiting the traction rope, and the end of the traction rope is provided with a limit ball located in the limit groove.

2. The medical visualization guiding device according to claim 1, characterized in that: The limiting groove comprises an accommodating cavity for accommodating the limiting ball and a connecting cavity for connecting the accommodating cavity and the guiding cavity, and the diameter of the connecting cavity is smaller than the diameter of the limiting ball.

3. The medical visualization guiding device according to claim 2, characterized in that: The position of the limiting groove close to the outer side of the flange extends outward to the side wall that passes through the flange.

4. The medical visualization guiding device according to claim 1, characterized in that: The plurality of guide cavities are distributed along the circumference.

5. The medical visualization guiding device according to claim 1, characterized in that: A sheath is sleeved on the outer peripheral wall of the conduit, and the end of the conduit close to the flange protrudes from the sheath. A groove is provided on the side of the end cover facing the sheath and the end cover is sleeved on the flange and the conduit through the groove. The outer diameter of the end cover is the same as the outer diameter of the sheath.

6. The medical visualization guiding device according to claim 5, characterized in that: The conduit is connected to the end cover and the sheath by gluing.

7. The medical visualization guiding device according to claim 1, characterized in that: The two sides of the lens cavity on the end cover are recessed outward to form a recessed groove for accommodating the camera, and the two sides of the camera are provided with card blocks located in the recessed groove.

8. The medical visualization guiding device according to claim 7, characterized in that: The end surface of the end cap away from the catheter includes a plane area and a curved area. The plane area smoothly transitions toward the catheter through the curved area. The camera is arranged in the plane area.

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