Insertion part structure assembly of inclined instrument channel and endoscope

Abstract

The utility model discloses an insertion part structure assembly of an inclined instrument channel, which comprises a cylinder body and a channel tube, two ends of the cylinder body are two plane ends respectively, the channel tube is matched with one plane end of the cylinder body, a camera is arranged at the other plane end of the cylinder body, and the camera is connected with the cylinder body. The camera and the channel pipe are respectively located at two ends of the cylinder body, the cylinder body is a round cylinder body, an instrument channel is arranged on the side wall of the cylinder body, the instrument channel is located between two plane ends, and the included angle between the instrument channel and the central axis of the cylinder body is 20-40 degrees. The utility model further discloses the endoscope comprising the structural assembly.

Description

Technical Field

[0001] The utility model relates to the field of medical auxiliary instruments, in particular to an insertion part structural component of an inclined instrument channel and an endoscope. Background Art

[0002] At present, as a member of minimally invasive surgical instruments, medical endoscopes are mainly used in natural cavities of the human body, especially in complex cavity surgeries, such as bladder or bile duct stone surgeries. In most of the current internal renal surgeries (such as kidney stone surgeries), the guide wire is first passed through the urethra into the ureter to reach the renal pelvis, and the guide sheath is passed along the guide wire to the entrance of the ureter and kidney (because the entrance is very narrow and the guide sheath is relatively large in diameter, the guide sheath cannot enter the kidney); the guide wire and the soft sheath inside the guide sheath are pulled out to form a hollow channel inside the guide sheath; the ureteroscope can enter the renal pelvis through the channel inside the guide sheath.

[0003] The structure of the current endoscope is roughly as shown in the patent publication document CN204445794U. Since the imaging channel (numbered 2 in the document, used to place the camera) and the working channel (numbered 3 in the document, used to move the instrument) of the endoscope of this mechanism are at the same end face, the front end bending radius of the ureteroscope insertion part is too large for the internal space of the renal pelvis. Since the imaging channel and the working channel are located at the same end face, the entire bending part cannot be bent freely and at a large angle (ranging from 15 degrees to 25 degrees) inside the kidney. Utility Model Content

[0004] In view of the above problems, the utility model proposes an insertion part structural component of an inclined instrument channel.

[0005] The technical solution adopted by the utility model is as follows:

[0006] An insertion structure component of an inclined instrument channel includes a cylinder and a channel tube, wherein the two ends of the cylinder are respectively two planar ends, the channel tube cooperates with one planar end of the cylinder, a camera is provided at the other planar end of the cylinder, the camera and the channel tube are respectively located at the two ends of the cylinder, the cylinder is a circular cylinder, an instrument channel is opened on the side wall of the cylinder, the instrument channel is located between the two planar ends, and the instrument channel is spiral, and the angle between the instrument channel and the central axis of the cylinder is 20 degrees to 40 degrees.

[0007] In this component, the camera is set at the flat end of the cylinder, the camera and the channel tube are respectively located at the two ends of the cylinder, the instrument channel is the channel for the instrument to leave the cylinder, the instrument channel is opened on the side wall of the cylinder, and the angle between the instrument channel and the central axis of the cylinder is 20 degrees to 40 degrees, so the instrument will bend to a certain extent when leaving the cylinder through the instrument channel. For the internal space of the renal pelvis, the instrument can obtain a larger operating angle, so that the instrument can better reach the lesion.

[0008] In summary, in this structural component, the instrument channel is opened on the side wall of the cylinder, and the angle between the instrument channel and the central axis of the cylinder is 20 degrees to 40 degrees, so that the instrument can obtain a larger operating angle in the internal space of the renal pelvis, thereby allowing the instrument to better reach the lesion.

[0009] Optionally, the channel tube includes an inner tube body and an outer tube body, the inner tube body is a hard inner tube body, the outer tube body is a soft outer tube body, the inner tube body is plugged together with the cylinder body, the outer tube body is sleeved on the inner tube body, and a through hole is opened on the tube wall of the inner tube body.

[0010] Specifically, the inner tube body is made of metal, and the outer tube body is made of soft rubber. The inner tube body itself has certain bendability. The inner tube body and the outer tube body are used together to ensure that the entire channel tube has good bendability and stability.

[0011] Optionally, an end plate is further included, which is arranged at the planar end of the cylinder, and the end plate and the cylinder are integrally formed, and the camera is fixedly connected to the end plate.

[0012] An endoscope comprises the insertion portion structural assembly with an inclined instrument channel as described above.

[0013] The beneficial effect of the utility model is that by opening the instrument channel on the side wall of the cylinder, and the angle between the instrument channel and the central axis of the cylinder is 20 degrees to 40 degrees, the instrument can obtain a larger operating angle in the internal space of the renal pelvis, so that the instrument can better reach the lesion. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of an endoscope;

[0015] Figure 2 yes Figure 1 The enlarged schematic diagram of A in the middle;

[0016] Figure 3 It is a schematic diagram of the disassembled structure of the cylinder, endoscope and channel tube;

[0017] Figure 4It is a schematic diagram of the working principle of the insertion structure components of the inclined instrument channel.

[0018] The reference numerals in the figures are: 1, channel tube; 101, outer tube body; 102, inner tube body; 2, cylinder body; 201, instrument channel; 3, end plate; 4, camera; 5, instrument; 6, lesion. DETAILED DESCRIPTION

[0019] The utility model is described in detail below in conjunction with the accompanying drawings.

[0020] Example 1

[0021] As attached Figure 2 And attached Figure 3 As shown, an insertion structure component of an inclined instrument channel includes a barrel 2 and a channel tube 1, the two ends of the barrel 2 are respectively two flat ends, the channel tube 1 is matched with a flat end of the barrel 2, a camera 4 is arranged at the other flat end of the barrel 2, the camera 4 and the channel tube 1 are respectively located at the two ends of the barrel 2, the barrel 2 is a circular barrel 2, an instrument channel 201 is opened on the side wall of the barrel 2, the instrument channel 201 is located between the two flat ends, and the instrument channel is spiral, and the angle between the instrument channel 201 and the central axis of the barrel 2 is 20 degrees to 40 degrees.

[0022] In this assembly, the camera 4 is arranged at the flat end of the cylinder 2, the camera 4 and the channel tube 1 are respectively located at the two ends of the cylinder 2, the instrument channel 201 is the channel for the instrument 5 to leave the cylinder 2, the instrument channel 201 is opened on the side wall of the cylinder 2, and the angle between the instrument channel 201 and the central axis of the cylinder 2 is 20 degrees to 40 degrees, so the instrument 5 will bend to a certain extent when leaving the cylinder 2 through the instrument channel 201, which can make the instrument 5 obtain a larger operating angle for the internal space of the renal pelvis, so that the instrument 5 can better reach the lesion 6. The above process can be seen in the attached Figure 4 In the embodiment, the instrument 5 is in an inclined state relative to the barrel 2, and the extension amount of the instrument 5 can be adjusted as needed, so that the instrument 5 can better reach the lesion 6.

[0023] In this component, the angle between the instrument channel 201 and the central axis of the cylinder 2 is 20 to 40 degrees. In fact, due to the different sizes of various instruments 5, such as optical fiber, stone extraction basket, etc., the angle of the instrument 5 after being actually derived from the instrument channel 201 is about 15 to 25 degrees. The reasons for designing this angle are mainly the following two points. The first point is that from the perspective of surgical operation, this angle can already meet the surgical operation. If the angle is set too large and exceeds the visible field of view of the camera 4, it is equivalent to operating in the blind spot of the visual field, which will cause additional uncontrollable risks to the surgical operation. The second is to analyze from the structure of the instrument 5. Due to the size limitation of the insertion part itself, the larger the bending angle inside, the smaller the bending radius. Even if the hardness of the instrument 5 itself is not considered, the smaller the turning radius, the greater the difficulty of turning, and the instrument 5 will be stuck at the exit of the channel. Lasers are often used in surgical procedures. Due to the material characteristics of laser optical fibers, bending with too small a radius and too large an angle will bring risks of easy bending and damage to the optical fiber.

[0024] In summary, in this structural component, the instrument channel 201 is opened on the side wall of the cylinder 2, and the angle between the instrument channel 201 and the central axis of the cylinder 2 is 20 degrees to 40 degrees, so that the instrument 5 can obtain a larger operating angle in the internal space of the renal pelvis, thereby allowing the instrument 5 to better reach the lesion 6.

[0025] As attached Figure 2 And attached Figure 3 As shown, the channel tube 1 includes an inner tube body 102 and an outer tube body 101, the inner tube body 102 is a hard inner tube body 102, the outer tube body 101 is a soft outer tube body 101, the inner tube body 102 is plugged together with the cylinder body 2, the outer tube body 101 is sleeved on the inner tube body 102, and a through hole is opened on the tube wall of the inner tube body 102.

[0026] Specifically, the inner tube body 102 is made of metal, and the outer tube body 101 is made of soft rubber. The inner tube body 102 itself has a certain degree of bendability. The inner tube body 102 and the outer tube body 101 are used together to ensure that the entire channel tube 1 has good bendability and stability.

[0027] As attached Figure 2 And attached Figure 3 As shown, it also includes an end plate 3, which is arranged at the plane end of the cylinder 2, and the end plate 3 and the cylinder 2 are integrally formed, and the camera 4 is fixedly connected to the end plate 3.

[0028] Example 2

[0029] As attached Figure 1 As shown, an endoscope includes an insertion portion structural component with an inclined instrument channel as shown in Example 1.

[0030] The above description is only a preferred embodiment of the present invention, and does not limit the patent protection scope of the present invention. Any equivalent transformations made using the contents of the present invention specification, directly or indirectly used in other related technical fields, are also included in the protection scope of the present invention.

Claims

1. An insertion structure component of an inclined instrument channel, comprising a barrel and a channel tube, wherein the two ends of the barrel are respectively two planar ends, the channel tube is matched with one planar end of the barrel, a camera is arranged at the other planar end of the barrel, the camera and the channel tube are respectively located at the two ends of the barrel, and characterized in that: The cylinder is a circular cylinder, and an instrument channel is opened on the side wall of the cylinder. The instrument channel is located between two plane ends and is spiral-shaped. The angle between the instrument channel and the central axis of the cylinder is 20 degrees to 40 degrees.

2. The insertion portion structural assembly of the inclined instrument channel according to claim 1, characterized in that: The channel tube includes an inner tube body and an outer tube body, the inner tube body is a hard inner tube body, the outer tube body is a soft outer tube body, the inner tube body is plugged together with the cylinder body, the outer tube body is sleeved on the inner tube body, and a through hole is opened on the tube wall of the inner tube body.

3. The insertion portion structural assembly of the inclined instrument channel according to claim 1, characterized in that: It also includes an end plate, which is arranged at the plane end of the cylinder, and the end plate and the cylinder are integrally formed, and the camera is arranged at the end plate.

4. An endoscope, characterized in that: An insertion portion structural component comprising the inclined instrument channel as claimed in any one of claims 1 to 3.

Images