An intubation guidewire device with visualization function

Abstract

The present invention discloses an intubation guidewire device with a visualization function, which relates to the technical field of the biomedical engineering industry. The device includes a display, a cannula body connected to the display, a guidewire body disposed in the cannula body, a cavity formed in the display, the cannula body communicating with the cavity in the display, a piston rack slidably connected to the side of the display near the cavity, the piston rack and the cavity of the display forming a cylinder-piston structure, the cannula body and the end of the guidewire body forming a cylinder-piston structure, and the guidewire body being fixedly connected to a push rack. After reaching the target position, the present invention only needs to push the piston rack upward to independently adjust the angle of the endoscope, thereby preventing the cannula guidewire from rotating relative to the mucosal layer or blood vessel wall inside the human body, reducing damage to the patient. The device is not only simple and flexible to operate, but also does not require additional external drive components.

Description

Technical Field

[0001] The present invention relates to the technical field of biomedical engineering industry, and in particular to an intubation guidewire device with a visualization function. Background Art

[0002] The intubation guidewire device combines traditional intubation with guidewire technology, integrating a miniature camera or sensor to allow the guidewire to pass through the intubation tube and into the interior of a body cavity or blood vessel. The device transmits real-time internal images to an external display, allowing physicians to visually observe the target area and confirm its location for precise manipulation.

[0003] When performing endoscopic examinations or interventional surgeries, since the relative angle between a conventional endoscope and the cannula cannot be adjusted, doctors usually need to rotate the cannula to adjust the viewing angle and position of the endoscope to ensure comprehensive observation of the internal image of the target area, thereby improving the accuracy of diagnosis or treatment. However, the operation of rotating the cannula may cause abrasions, bleeding or inflammation of the patient's mucosal layer, and may also cause damage to the patient's blood vessel walls, and even cause blood vessel rupture or perforation in severe cases. The patent with publication number CN219251337U discloses an intubation endoscope guidewire device with a tracheal visualization function, which adjusts the front, back, left, and right angles of the visible body through a first motor and a second motor, and then adjusts the shooting angle of the camera. It requires additional external drive components to achieve angle adjustment. Summary of the Invention

[0004] In order to overcome the disadvantage that a rotating cannula causes great harm to a patient, the present invention provides a cannula guidewire device with a visualization function.

[0005] A cannula guidewire device with a visualization function includes a display, a cannula body connected to the display, a guidewire body arranged in the cannula body, a cavity opened in the display, the cannula body is communicated with the cavity in the display, a piston rack is slidably connected to the side of the display close to the cavity, the piston rack and the cavity of the display constitute a cylinder piston structure, the cannula body and the end of the guidewire body constitute a cylinder piston structure, the guidewire body is fixedly connected to a push rack, the push rack has an external thread groove, the push rack is rotatably connected to an endoscope, a torsion spring is fixed between the push rack and the endoscope, a steering cylinder is clamped in the cannula body through a first fixing piece, the steering cylinder has an internal thread groove, the external thread groove of the push rack moves and is threadedly matched with the thread groove of the steering cylinder, and a guide rack for limiting the push rack and the endoscope is clamped in the cannula body through a second fixing piece.

[0006] Optionally, a frustum hole is opened in the guide frame, and one end of the frustum hole with a small aperture limits the push frame and the endoscope.

[0007] Optionally, the aperture of the guide frame on a side close to the steering cylinder is smaller than the aperture of the guide frame on a side away from the steering cylinder.

[0008] Optionally, the first fixing member is configured as a cartridge, which is clamped in the cannula body, and the clamping connection between the cartridge and the cannula body is a tight fitting structure, so that a predetermined push-pull force needs to be applied between the two to achieve relative movement, and the steering cylinder is slidingly connected to the cartridge, and the cartridge is slidingly connected with sliding rods symmetrically distributed along the cartridge, and a first spring is fixed between the sliding rod and the cartridge.

[0009] Optionally, one side of the steering cylinder is in contact with the cartridge, and the other side of the steering cylinder is moved into contact with the cartridge.

[0010] Optionally, the second fixing member is configured as a circumferentially distributed elastic guide plate, which is clamped in the cannula body. The elastic guide plate is fixed to the cartridge, and the clamping connection between the elastic guide plate and the cannula body is a tight fitting structure, so that a predetermined push-pull force needs to be applied between the two to achieve relative movement. The elastic guide plate is slidably connected to the guide frame, and the guide frame is fixed to the elastic guide plate by fasteners.

[0011] Optionally, the fastener is configured as an elastic clamp, the guide frame is provided with a clamp groove, and the clamp is pressed tightly into the clamp groove of the guide frame.

[0012] Optionally, a transparent sleeve is further included, which is clamped to the end of the cannula body close to the endoscope, and the clamping connection between the sleeve and the cannula body is a tight fitting structure, so that a predetermined push-pull force needs to be applied between the two to achieve relative movement. The sleeve is fixed with an elastic cloth, and a glass cover is fixed in the middle of the elastic cloth, and the endoscope moves into the glass cover.

[0013] Optionally, it also includes positioning rods symmetrically distributed along the piston frame, the positioning rods are slidably connected to the piston frame, the ends of the positioning rods are in contact with the inner side of the display, and a positioning hole corresponding to the positioning rod is opened on the inner side of the display. When the positioning rod is inserted into the positioning hole, the endoscope just moves into the glass cover, and a second spring is fixed between the symmetrically distributed positioning rods.

[0014] The present invention has the following advantages:

[0015] After reaching the target position, the present invention only needs to push the piston rack upward to adjust the angle of the endoscope independently, preventing the intubation guide wire from rotating relative to the human body's internal mucosal layer or blood vessel wall, reducing damage to the patient. It is not only simple and flexible to operate, but also does not require additional external driving components.

[0016] The present invention provides a cartridge, a slide rod and a first spring so that the endoscope can be reversed and reset after being inserted into the cannula body, thereby avoiding the endoscope being reversed before being inserted into the cannula body, causing the endoscope to rotate outside the tube when reset, thereby acting again on the mucosal layer or blood vessel wall inside the human body, thereby reducing damage to the human body.

[0017] The present invention provides a clamp and an elastic guide plate so that the relative initial position of the guide frame and the endoscope can be adjusted, so that the deflection angle of the endoscope can be pre-adjusted according to the specific situation of the target position.

[0018] The present invention can protect the components inside the cannula body by arranging the glass cover, thereby achieving a safety protection effect.

[0019] The present invention provides a positioning rod, and only needs to adjust the position of the piston frame according to demand. In the process of pushing the piston frame, the state of the endoscope can be easily judged and controlled by sensing obstruction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the display, piston rack, cannula body and guide wire body of the present invention.

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the guidewire body, push frame, endoscope and other components of the present invention.

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the torsion spring, steering cylinder, guide frame and other components of the present invention.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the steering cylinder, the clamping cylinder, the sliding rod and other components of the present invention.

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the cartridge, the slide rod, the first spring and other components of the present invention.

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the components such as the clamp, elastic guide plate and clamp of the present invention.

[0027] Figure 8 It is a schematic diagram of the three-dimensional structure of the sleeve, elastic fabric, glass cover and other components of the present invention.

[0028] Figure 9 It is a schematic diagram of the three-dimensional structure of the display, positioning rod, second spring and other components of the present invention.

[0029] The meanings of the reference numerals in the figure are as follows: 1: display, 101: piston rack, 2: cannula body, 3: guide wire body, 4: push rack, 5: endoscope, 6: torsion spring, 7: steering cylinder, 8: guide rack, 9: cartridge, 10: slide rod, 11: first spring, 12: elastic guide plate, 13: clamp, 14: sleeve, 15: elastic cloth, 16: glass cover, 17: positioning rod, 18: second spring. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that any directional terms such as "up," "down," "left," "right," "front," "back," "inside," and "outside" that appear or will appear herein are based solely on the accompanying drawings and are not intended to limit the present invention.

[0031] Example 1: A cannula guidewire device with visualization function, such as Figures 1-4 As shown, it includes a display 1, a cavity is opened in the display 1, and a piston frame 101 is slidably connected to the side of the display 1 close to the cavity in the up and down directions. The piston frame 101 and the cavity of the display 1 constitute a cylinder piston structure. The display 1 is connected to a cannula body 2, and the cannula body 2 is communicated with the cavity in the display 1. A guide wire body 3 is provided in the cannula body 2, and the cannula body 2 and the right end of the guide wire body 3 constitute a cylinder piston structure. The left end of the guide wire body 3 is fixedly connected to a push frame 4, and the right part of the push frame 4 is provided with an external thread groove. The left part of the push frame 4 is rotatably connected to the endoscope 5, and the push frame 4 is connected to the endoscope 5. A torsion spring 6 is fixed between the endoscope 5, and a steering cylinder 7 is clamped in the cannula body 2 through a first fixing piece. The steering cylinder 7 has an internal thread groove. The external thread groove of the push frame 4 moves to the left and is threadedly matched with the thread groove of the steering cylinder 7. A guide frame 8 is clamped in the cannula body 2 through a second fixing piece. The guide frame 8 has a truncated cone hole. The aperture of the right end of the truncated cone hole of the guide frame 8 is smaller than the aperture of the left end of the truncated cone hole of the guide frame 8. The right end of the truncated cone hole limits the pushing frame 4 and the endoscope 5. When the endoscope 5 extends to the left into the truncated cone hole of the guide frame 8, the endoscope 5 is deflected to the right end by the torsion spring 6 and contacts the inner wall of the guide frame 8.

[0032] When using the device to perform in-vivo detection on a patient, after the cannula body 2 is moved and introduced into the target position in the human body, when the angle of the endoscope 5 needs to be adjusted, the piston rack 101 is gradually pushed upwards, and the piston rack 101 pushes the gas in the internal cavity of the display 1 into the cannula body 2. Under the action of the air pressure, the guide wire body 3 slides along the cannula body 2 to the side away from the display 1. The guide wire body 3 pushes the endoscope 5 and the torsion spring 6 to move synchronously to the side away from the display 1 through the push rack 4. When the endoscope 5 breaks away from the limit of the right port of the guide rack 8, the endoscope is reset under the action of the torsion spring 6. 5 is deflected relative to the push frame 4 by a certain angle. When the external thread groove of the push frame 4 moves to the internal thread groove of the steering cylinder 7, the push frame 4 will be rotated by the steering cylinder 7 as it continues to move, thereby driving the endoscope 5 to move and rotate, so as to observe the specific conditions of the target area from multiple angles. In this way, after reaching the target position, the present invention only needs to push the piston frame 101 upward to independently adjust the angle of the endoscope 5, thereby preventing the intubation guide wire from rotating relative to the mucosal layer or blood vessel wall inside the human body, reducing damage to the patient. It is not only simple and flexible to operate, but also does not require additional external drive components.

[0033] After completing the inspection, it is only necessary to gradually pull the piston frame 101 downward, so that the guide wire body 3, push frame 4, endoscope 5, torsion spring 6, steering cylinder 7 and guide frame 8 move in the opposite direction and reset under the action of negative pressure. During this process, the endoscope 5 is gradually deflected and reset in the opposite direction due to the squeezing action of the inner side of the guide frame 8, and the torsion spring 6 returns to the state of deformation and force storage.

[0034] like Figure 5 and Figure 6 As shown, the first fixing member is set as a cartridge 9, which is clamped in the cannula body 2, and the clamping connection between the cartridge 9 and the cannula body 2 is a tight fitting structure, so that a predetermined push-pull force needs to be applied between the two to achieve relative movement. The steering cylinder 7 is slidably connected to the cartridge 9, and the left side of the steering cylinder 7 contacts the cartridge 9, thereby limiting the left side of the steering cylinder 7. The right side of the steering cylinder 7 moves to the right and contacts the cartridge 9, thereby limiting the right side of the steering cylinder 7. The cartridge 9 is slidably connected in the left and right directions with a slide rod 10 symmetrically distributed along the front and back of the cartridge 9, and a first spring 11 is fixed between the slide rod 10 and the cartridge 9.

[0035] During the above-mentioned resetting process, before the endoscope 5 is inserted into the cannula body 2, it will be reversed under the cooperation of the external thread groove of the push frame 4 and the internal thread groove of the steering cylinder 7, causing the rotating endoscope 5 to act on the mucosal layer or blood vessel wall inside the human body again. In order to further reduce damage, the following settings are made so that the endoscope 5 can be reversed and reset after being inserted into the cannula body 2. The specific operation is as follows:

[0036] When the outer thread groove of the push frame 4 is disengaged from the inner thread groove of the steering cylinder 7, the slide bar 10 drives the steering cylinder 7 to move to the left and reset under the reset action of the first spring 11.

[0037] The detachable design of the cartridge 9 and the guide frame 8 allows the guide wire body 3, the push frame 4, the endoscope 5, the torsion spring 6, the steering cylinder 7, the slide rod 10 and the first spring 11 thereon to be pulled out of the cannula body 2. In this way, even if the cannula body 2 cannot be reused, the remaining components can be reused after disinfection.

[0038] like Figure 7 As shown, the second fixing member is configured as a circumferentially distributed elastic guide plate 12, which is clamped in the cannula body 2, and the elastic guide plate 12 is fixed to the cartridge 9, and the clamping connection between the elastic guide plate 12 and the cannula body 2 is a tight fitting structure, so that a predetermined push-pull force needs to be applied between the two to achieve relative movement, and the elastic guide plate 12 is slidably connected to the guide frame 8, and the guide frame 8 is fixed to the elastic guide plate 12 by an elastic clamp 13, and the outer wall of the guide frame 8 is provided with a hoop groove along the circumference, and the clamp 13 is pressed in the hoop groove of the guide frame 8. When the clamp 13 presses the elastic guide plate 12, the compressed part of the elastic guide plate 12 undergoes adaptive deformation.

[0039] Before inserting the cartridge 9 into the cannula body 2, first move the guide frame 8 to the left or right relative to the elastic guide plate 12, adjust the relative initial position of the guide frame 8 and the endoscope 5, and after determining the position of the adjusted guide frame 8, fix the guide frame 8 on the elastic guide plate 12 by the clamp 13. If the guide frame 8 is initially more biased to the left, the deflection angle of the endoscope 5 when it is deflected to the inner side of the guide frame 8 under the action of the torsion spring 6 after the endoscope 5 moves to the left relative to the guide frame 8 will be smaller. Conversely, if the guide frame 8 is initially more biased to the right, the deflection angle of the endoscope 5 will be larger. In this way, the deflection angle of the endoscope 5 can be pre-adjusted according to the specific situation of the target position.

[0040] Example 2: Based on Example 1, Figure 8 As shown, it also includes a transparent sleeve 14, which is clamped to the left end of the cannula body 2, and the clamping connection between the sleeve 14 and the cannula body 2 is a tight fitting structure, so that a predetermined push-pull force needs to be applied between the two to achieve relative movement. The inner side surface of the sleeve 14 is fixedly connected with an elastic cloth 15 along the circumferential direction, and the middle of the elastic cloth 15 is fixedly connected with a glass cover 16. The glass cover 16 protrudes to the left, and the endoscope 5 moves to the left and extends into the glass cover 16. The elastic cloth 15 cooperates with the glass cover 16 to close the left end of the cannula body 2.

[0041] By providing the glass cover 16, the components inside the cannula body 2 can be protected, thereby achieving a safety protection effect. When the endoscope 5 pops out of the cannula body 2, the endoscope 5 is inserted into the glass cover 16, and the glass cover 16 moves synchronously with the endoscope 5, and the elastic fabric 15 adaptively deforms with the movement of the endoscope 5 and the glass cover 16.

[0042] Example 3: Based on Example 2, Figure 9 As shown, it also includes positioning rods 17 symmetrically distributed along the front and back of the piston frame 101. The positioning rods 17 are slidably connected to the piston frame 101. The outer ends of the positioning rods 17 are in contact with the inner side of the display 1. The inner side of the display 1 is provided with positioning holes corresponding to the positioning rods 17. When the positioning rods 17 are inserted into the corresponding positioning holes, the endoscope 5 just moves into the glass cover 16. A second spring 18 is fixed between the positioning rods 17 symmetrically distributed front and back.

[0043] When the piston rack 101 is pushed upward, the piston rack 101 drives the positioning rod 17 to move upward. When the positioning rod 17 moves to the positioning hole, the second spring 18 in the compressed state resets and drives the positioning rod 17 to snap into the corresponding positioning hole. At this time, the endoscope 5 just moves into the glass cover 16. If direct observation is required, stop pushing the piston rack 101 immediately. The endoscope 5 will not deflect or rotate. If multi-angle observation is required, continue to push the piston rack 101 upward. When continuing to push upward, the positioning rod 17 needs to overcome the resistance of the display 1. In this way, the present invention only needs to adjust the position of the piston rack 101 according to demand. In the process of pushing the piston rack 101, the state of the endoscope 5 can be easily judged and controlled by feeling the obstruction.

[0044] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A cannula guidewire device with a visualization function, comprising a display (1), a cannula body (2) connected to the display (1), a guidewire body (3) disposed within the cannula body (2), characterized in that: A cavity is opened in the display (1), the cannula body (2) is connected to the cavity in the display (1), a piston frame (101) is slidably connected to the side of the display (1) close to the cavity, the piston frame (101) and the cavity of the display (1) constitute a cylinder piston structure, the cannula body (2) and the end of the guide wire body (3) constitute a cylinder piston structure, the guide wire body (3) is fixedly connected to a push frame (4), the push frame (4) has an external thread groove, the push frame (4) is rotatably connected to an endoscope (5), a torsion spring (6) is fixedly connected between the push frame (4) and the endoscope (5), a steering cylinder (7) is clamped in the cannula body (2) through a first fixing member, the steering cylinder (7) has an internal thread groove, the external thread groove of the push frame (4) moves to threadably cooperate with the thread groove of the steering cylinder (7), and a guide frame (8) for limiting the push frame (4) and the endoscope (5) is clamped in the cannula body (2) through a second fixing member.

2. The intubation guidewire device with visualization function according to claim 1, characterized in that: A truncated cone hole is provided in the guide frame (8), and one end of the truncated cone hole with a small aperture limits the push frame (4) and the endoscope (5).

3. The intubation guidewire device with visualization function according to claim 2, characterized in that: The aperture of the guide frame (8) on the side close to the steering cylinder (7) is smaller than the aperture of the guide frame (8) on the side away from the steering cylinder (7).

4. The intubation guidewire device with visualization function according to claim 3, characterized in that: The first fixing member is configured as a cartridge (9), which is clamped in the cannula body (2), and the clamping connection between the cartridge (9) and the cannula body (2) is a tightly fitting structure, so that a predetermined push-pull force needs to be applied between the two to achieve relative movement, the steering cylinder (7) is slidably connected to the cartridge (9), and the cartridge (9) is slidably connected to a slide rod (10) symmetrically distributed along the cartridge (9), and a first spring (11) is fixed between the slide rod (10) and the cartridge (9).

5. The intubation guidewire device with visualization function according to claim 4, characterized in that: One side of the steering cylinder (7) contacts the cartridge (9), and the other side of the steering cylinder (7) moves to contact the cartridge (9).

6. The intubation guidewire device with visualization function according to claim 5, characterized in that: The second fixing member is configured as a circumferentially distributed elastic guide plate (12), the elastic guide plate (12) is clamped in the cannula body (2), the elastic guide plate (12) is fixedly connected to the cartridge (9), and the clamping connection between the elastic guide plate (12) and the cannula body (2) is a tightly fitting structure, so that a predetermined push-pull force needs to be applied between the two to achieve relative movement, the elastic guide plate (12) is slidably connected to the guide frame (8), and the guide frame (8) is fixed to the elastic guide plate (12) by a fastener.

7. The intubation guidewire device with visualization function according to claim 6, characterized in that: The fastener is configured as an elastic clamp (13), the guide frame (8) is provided with a clamp groove, and the clamp (13) is pressed tightly into the clamp groove of the guide frame (8).

8. The intubation guidewire device with visualization function according to claim 7, characterized in that: The invention also includes a transparent sleeve (14), which is clamped to the end of the cannula body (2) close to the endoscope (5), and the clamping between the sleeve (14) and the cannula body (2) is a tightly fitting structure, so that a predetermined push-pull force is required to be applied between the two to achieve relative movement. The sleeve (14) is fixedly connected to an elastic cloth (15), and a glass cover (16) is fixedly connected to the middle of the elastic cloth (15). The endoscope (5) moves and extends into the glass cover (16).

9. The intubation guidewire device with visualization function according to claim 8, characterized in that: The endoscope (5) is also provided with positioning rods (17) symmetrically distributed along the piston frame (101). The positioning rods (17) are slidably connected to the piston frame (101). The ends of the positioning rods (17) are in contact with the inner side of the display (1). The inner side of the display (1) is provided with positioning holes corresponding to the positioning rods (17). When the positioning rods (17) are inserted into the positioning holes, the endoscope (5) just moves into the glass cover (16). A second spring (18) is fixed between the symmetrically distributed positioning rods (17).

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