Spine endoscope

Abstract

A spine endoscope comprises a bendable catheter and a handle connected with the catheter, an adjusting rope and a line wheel which are used for controlling the catheter to turn are arranged in the handle, and the adjusting rope and the line wheel are rotated to drive the catheter to bend or unbend, and the spine endoscope is characterized in that the line wheel is perpendicular to the catheter, a strip-shaped hole is formed in the line wheel in the radial direction, and a connecting block is installed in the strip-shaped hole; the two ends of the adjusting rope are connected with the guide pipe and the connecting block respectively, the handle is further provided with an adjusting mechanism capable of driving the connecting block to move in the strip-shaped hole in the radial direction, the adjusting mechanism drives the connecting block to move in the strip-shaped hole so as to adjust the rotating radius of the adjusting rope, and then the bending degree of the guide pipe is adjusted. The spinal endoscope has the advantages that one end of the adjusting rope of the spinal endoscope can expand outwards or contract inwards in the radial direction of the wire wheel, so that the rotating radius of the adjusting rope is changed, and the bending degree of the catheter is adjusted by changing the rotating radius of the adjusting rope.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to a spinal endoscope. Background Art

[0002] A spinal endoscope is a medical device used for diagnosing and treating spinal diseases. By inserting a slender fiber endoscope into a patient's body, the internal structure of the spine can be observed and surgical treatment can be performed. A spinal endoscope generally includes a handle and an insertion tube, etc. The insertion tube can be a rigid tube, a flexible tube, or a tube body combining rigidity and flexibility. The handle can control the bending of the free end of the insertion tube, so as to align the insertion tube with the target site, and then diagnose and treat the target site.

[0003] As shown in the Chinese invention application with the patent number CN202310404536.9 (publication number CN116195963A) of the existing brain endoscope, the endoscope includes an endoscope tube and an endoscope handle. The endoscope tube has a rigid tube and a flexible tube. The flexible tube is arranged at the front end of the rigid tube, and the rigid tube can provide support for the flexible tube. The endoscope handle is connected to the rigid tube. The endoscope handle can control the overall rotation of the consumable endoscope tube, and the endoscope handle is provided with a bending control rope and a control wheel. The two ends of the bending control rope are respectively connected to the flexible tube and the control wheel. Through the cooperation of the control wheel and the bending control rope, the flexible tube is controlled to bend or straighten, so that the detection range and surgical operation space of the endoscope are larger.

[0004] Although the insertion tube of the above-mentioned brain endoscope can bend or straighten and perform corresponding treatments, the anatomical points of the spine are significantly different from those of the brain. The brain endoscope cannot be applied to spinal treatment. That is, if the position of the spinal target lesion is farther or the target position is more lateral, the spinal endoscope needs to be able to change the bending degree of the insertion tube. However, the wire wheel of the existing spinal endoscope cannot adjust the rotation radius of the steel wire rope. The rotation radius of the steel wire rope is fixed, and the wire wheel can only control the steel wire rope to rotate with one kind of precision. The bending degree of the insertion tube may not meet the needs of users, that is, the bending degree of the insertion tube may be too large or too small, resulting in the end of the insertion tube not being able to align with the target site, affecting the actual operation of users, and further affecting the accuracy of spinal surgery. Therefore, further improvement needs to be made for the spinal endoscope. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide a spinal endoscope with a catheter that can bend and the bending degree can be adjusted according to the above-mentioned current technical situation.

[0006] The technical solution adopted by the utility model to solve the above technical problems is as follows: the spinal endoscope comprises a bendable catheter and a handle connected to the catheter, the handle is provided with an adjustment rope and a wire wheel for controlling the steering of the catheter, and the adjustment rope and the wire wheel are rotated to drive the catheter to bend or straighten, and the characteristic is that: the wire wheel is vertically arranged with the catheter, the wire wheel is provided with strip holes arranged in a radial direction, a connecting block is installed in the strip hole, the two ends of the adjustment rope are respectively connected with the catheter and the connecting block, the handle is also provided with an adjustment mechanism capable of driving the connecting block to move radially in the strip hole, and the connecting block is driven to move in the strip hole by the adjustment mechanism to adjust the rotation radius of the adjustment rope, thereby adjusting the bending degree of the catheter.

[0007] In order to enable the connection block to move along the strip hole under the drive of the adjustment mechanism, preferably, the connection block includes a first block and a second block, one end of the first block is connected to the adjustment mechanism and installed outside the strip hole, the other end of the first block is installed in the strip hole and fixedly connected to the second block, one end of the second block is fixedly connected to the first block, and the other end of the second block is connected to the adjustment rope and installed outside the strip hole, so that the adjustment mechanism can drive the connection block to move radially in the strip hole. The adjustment mechanism is connected to the first block, the first block and the second block are fixedly connected in the strip hole, and the second block is connected to the adjustment rope, so that the adjustment mechanism can drive the connection block to move in the strip hole, thereby adjusting the rotation radius of the adjustment rope.

[0008] In order to enable the spinal endoscope to extend into the instrument for corresponding operations, preferably, a working tube is further provided in the handle, the working tube is axially connected to the catheter, one end of the working tube is connected to the outer end of the catheter, and the other end of the working tube can be connected to the opening at the rear end of the handle, and the working channel formed by the working tube can allow the instrument to extend from the rear end of the handle to the front end of the catheter, and the working tube is driven by the catheter to turn. The working tube connects the rear end of the handle with the front end of the catheter, so that the instrument can extend from the rear end of the handle to the front end of the catheter for corresponding operations, and the working tube is a soft pipe, and the working tube is controlled to turn by the catheter sleeved outside it.

[0009] In order to enable the adjustment mechanism to drive the connecting block to move in the strip hole, preferably, the adjustment mechanism includes a paddle and a transmission assembly, the paddle can move along the axial direction of the working tube, the paddle is connected to the transmission assembly, the transmission assembly is connected to the connecting block, the top of the paddle is exposed to the handle, and moving the paddle can drive the connecting block to move in the strip hole with the help of the transmission assembly.

[0010] Furthermore, the transmission assembly includes a slider and a transmission part, the slider is sleeved on the working tube, the slider is rotatably connected to the paddle, the transmission part includes two connecting rods, one end of the two connecting rods are hinged to the slider, the other ends of the two connecting rods are respectively hinged to the corresponding connecting blocks, the connecting rods are arranged at an angle to the working tube, and moving the paddle can drive the slider along the working tube to approach or move away from the wire wheel, and the slider enables the connecting rod to drive the connecting block to move in the strip hole. In the first state, the paddle is moved axially along the working tube to drive the slider close to the reel, and the connecting rod set at an angle will drive the connecting block to move radially outward in the strip hole, thereby increasing the rotation radius of the adjusting rope. At this time, the rotation of the adjusting rope can make the bending degree of the catheter more sensitive; in the second state, the paddle is moved axially along the working tube to drive the slider away from the reel, and the connecting rod set at an angle will drive the connecting block to move radially inward in the strip hole, thereby decreasing the rotation radius of the adjusting rope. If the adjusting rope in the second state rotates at the same angle as the adjusting rope in the first state, the bending degree of the catheter in the first state is greater than that of the catheter in the second state.

[0011] In order to facilitate the movement of the connection block in the strip hole, preferably, the transmission assembly also includes an elastic member, the two ends of which are respectively connected to the two corresponding connection blocks, and the elastic member causes the two connection blocks to always be subjected to an elastic force moving radially outward. The elastic member is connected to the two connection blocks in a compressed state, so that the two connection blocks are always subjected to an elastic force moving radially outward, that is, in the natural state of the spinal endoscope, the connection block is in the first state, the angle between the connecting rod and the working tube is at the maximum value, and the rotation radius of the adjustment rope is the maximum. The user can switch the connection block from the first state to the second state by turning the paddle to change the rotation radius of the adjustment rope, so that the user can operate the adjustment mechanism more labor-saving.

[0012] Furthermore, the elastic member is a spring, and the connecting block is provided with a fixing portion for connecting to the elastic member, the fixing portion includes a rod body for winding around the end of the elastic member, one end of the rod body is fixedly connected to the connecting block, and the other end of the rod body is provided with a limit block, and the limit block can prevent the end of the elastic member from falling off.

[0013] In order to lock or unlock the position of the paddle, preferably, the handle is further provided with a positioning mechanism for positioning the paddle, the positioning mechanism comprising a positioning column and a driving member, the driving member can drive the positioning column to move closer to or away from the paddle to lock or unlock the paddle. The driving member can be a motor driving the positioning column to move, or the driving member can be a transmission structure driving the positioning column to move.

[0014] In order to enable the driving member to drive the positioning column to approach or move away from the plectrum, preferably, the plectrum is provided with a positioning block along the direction of the plectrum, the housing of the handle is provided with a mounting hole perpendicular to the positioning block, the mounting hole is provided with a thread, the driving member includes a knob exposed from the housing of the handle and a screw connected to the mounting hole by thread, the positioning column is fixedly connected to the screw, and rotating the knob will drive the screw to rotate in the mounting hole and move along the axial direction of the mounting hole, thereby driving the positioning column to approach or move away from the positioning block to achieve locking or unlocking the plectrum. Rotating the knob drives the screw to move along the axial direction of the mounting hole, thereby driving the positioning column to approach or move away from the positioning block, the positioning column approaches the positioning block to resist the positioning block, the positioning column applies pressure on the positioning block, a large friction force is generated between the positioning column and the positioning block, thereby locking the plectrum; the positioning column moves away from the positioning block to loosen the positioning block, the friction between the positioning column and the positioning block disappears, thereby unlocking the plectrum.

[0015] In order to enable the reel to rotate, preferably, the handle is provided with a rotating wheel, the rotating wheel is provided with a transmission rod, both ends of the transmission rod are fixedly connected to the rotating wheel and the reel respectively, and the rotation of the rotating wheel drives the reel to rotate with the help of the transmission rod.

[0016] Compared with the prior art, the advantages of the utility model are: the spinal endoscope controls the steering of the catheter by a rotatable adjustment rope and a wire wheel, the wire wheel is provided with strip holes arranged along the radial direction, one end of the adjustment rope is connected to the catheter, and the other end of the adjustment rope is linked to the connecting block, and the adjustment mechanism drives the connecting block to move in the strip hole, so that one end of the adjustment rope can expand outward or contract inward along the radial direction of the wire wheel, thereby changing the rotation radius of the adjustment rope. The spinal endoscope adjusts the bending degree of the catheter by changing the rotation radius of the adjustment rope, thereby meeting the user's diverse usage needs and improving the user's usage experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of an embodiment of the utility model (part of the handle is omitted);

[0019] Figure 3 It is a structural schematic diagram of the wire wheel, the adjusting rope, the adjusting mechanism and the rotating wheel in the embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the adjustment mechanism, the adjustment rope and the wire wheel in the embodiment of the utility model;

[0021] Figure 5 This is an exploded schematic diagram of the wire wheel and the connecting block in the embodiment of the utility model;

[0022] Figure 6 Structural schematic diagram of the connecting block in the embodiment of the present utility model;

[0023] Figure 7 Structural schematic diagram of the paddle and the positioning mechanism in the embodiment of the present utility model;

[0024] Figure 8 Cross-sectional view of the embodiment of the present utility model;

[0025] Figure 9 Structural schematic diagram of the mounting hole in the embodiment of the present utility model. Specific embodiments

[0026] The present utility model will be further described in detail below in conjunction with the embodiments with reference to the drawings.

[0027] As Figures 1 to 9 shown, it is the best embodiment of the present utility model.

[0028] As Figures 1 to 5 shown, the spinal endoscope of this embodiment includes a flexible catheter 1 and a handle 2 connected to the catheter 1. A lens assembly is provided at the front end of the catheter 1. An adjusting rope 3 and a wire wheel 4 for controlling the turning of the catheter 1 are provided in the handle 2. Rotating the adjusting rope 3 and the wire wheel 4 drives the catheter 1 to bend or straighten. The wire wheel 4 is arranged perpendicular to the catheter 1. Two strip-shaped holes 41 are arranged radially on the wire wheel 4. The two strip-shaped holes 41 are located on the same diameter. A connecting block 5 is installed in the strip-shaped holes 41. Both ends of the adjusting rope 3 are respectively connected to the catheter 1 and the connecting block 5. An adjusting mechanism 6 capable of driving the connecting block 5 to move radially in the strip-shaped holes 41 is further provided on the handle 2. By driving the connecting block 5 to move in the strip-shaped holes 41 through the adjusting mechanism 6, the rotation radius of the adjusting rope 3 is adjusted, and then the bending degree of the catheter 1 is adjusted. And a working tube 7 is provided in the handle 2 of this embodiment. The working tube 7 is axially communicated with the catheter 1. One end of the working tube 7 is communicated with the outer end of the catheter 1, and the other end of the working tube 7 can be communicated with the opening 21 at the rear end of the handle 2. The working channel formed by the working tube 7 can allow the instrument to extend from the rear end of the handle 2 to the front end of the catheter 1. The working tube 7 is driven to turn by the catheter 1. A through hole 42 for the working tube 7 to pass through is provided on the wire wheel 4. The through hole 42 is arranged at the center of the wire wheel 4. In addition, a rotating wheel 9 is further provided on the handle 2 of this embodiment. A transmission rod 91 is provided on the rotating wheel 9. Both ends of the transmission rod 91 are respectively fixedly connected to the rotating wheel 9 and the wire wheel 4. The rotation of the rotating wheel 9 drives the wire wheel 4 to rotate by means of the transmission rod 91.

[0029] As Figures 2 to 5As shown, the adjustment mechanism 6 of this embodiment includes a paddle 61 and a transmission assembly 62. The paddle 61 can move along the axial direction of the working tube 7. The paddle 61 is connected to the transmission assembly 62. The transmission assembly 62 is connected to the connecting block 5. The top of the paddle 61 is exposed to the handle 2. When the paddle 61 is moved, the connecting block 5 can be driven to move in the strip hole 41 with the help of the transmission assembly 62. Among them, the transmission assembly 62 includes a slider 621, a transmission part and an elastic member 623. The slider 621 is sleeved on the working tube 7. The slider 621 is rotatably connected to the paddle 61. The transmission part includes two connecting rods 622. One end of the two connecting rods 622 is hinged to the slider 621, and the other ends of the two connecting rods 622 are respectively hinged to the corresponding connecting blocks 5. The connecting rods 622 and the working tube 7 are arranged at an angle. Moving the paddle 61 can drive the slider 621 along the working tube 7 to approach or move away from the wire wheel 4. The slider 621 enables the connecting rod 622 to drive the connecting block 5 to move in the strip hole 41; the elastic member 623 is a spring. The two ends of the elastic member 623 are respectively connected to the two corresponding connecting blocks 5. The elastic member 623 causes the two connecting blocks 5 to always be subjected to an elastic force moving radially outward.

[0030] like Figure 5 and Figure 6 As shown, the connection block 5 of this embodiment includes a first block 51 and a second block 52, one end of the first block 51 is connected to the adjustment mechanism 6 and installed outside the strip hole 41, the other end of the first block 51 is installed in the strip hole 41 and fixedly connected to the second block 52, one end of the second block 52 is fixedly connected to the first block 51, and the other end of the second block 52 is connected to the adjustment rope 3 and installed outside the strip hole 41, so that the adjustment mechanism 6 can drive the connection block 5 to move radially in the strip hole 41. Among them, the first block 51 and the second block 52 are fixedly connected by bonding. And the connection block 5 of this embodiment is provided with a fixing portion 53 for connecting with the elastic member 623, and the fixing portion 53 includes a rod 531 for winding the end of the elastic member 623, one end of the rod 531 is fixedly connected to the first block 51, and the other end of the rod 531 is provided with a stopper 532, and the stopper 532 can prevent the end of the elastic member 623 from falling off.

[0031] like Figures 7 to 9As shown, the handle 2 of this embodiment is further provided with a positioning mechanism 8 for positioning the paddle 61 . The positioning mechanism 8 includes a positioning column 81 and a driving member 82 . The driving member 82 can drive the positioning column 81 to move closer to or away from the paddle 61 to lock or unlock the paddle 61 . Among them, the paddle 61 is provided with a positioning block 611 along the toggling direction, and the shell of the handle 2 is provided with a mounting hole 22 perpendicular to the positioning block 611, and a thread is provided in the mounting hole 22. The driving member 82 includes a knob 821 exposed from the shell of the handle 2 and a screw 822 threadedly connected to the mounting hole 22. The positioning column 81 is fixedly connected to the screw 822. Rotating the knob 821 will drive the screw 822 to rotate in the mounting hole 22 and move along the axial direction of the mounting hole 22, thereby driving the positioning column 81 to approach or move away from the positioning block 611 to achieve locking or unlocking the paddle 61, that is, the positioning column 81 approaches and abuts against the positioning block 611, and a large friction force can be generated between the positioning column 81 and the positioning block 611, thereby locking the paddle 61, and the positioning column 81 moves away from and releases the positioning block 611, and the friction between the positioning column 81 and the positioning block 61 disappears, thereby unlocking the paddle 61.

[0032] The workflow of this embodiment is:

[0033] A. When the user needs to make the catheter 1 bend more sensitively, that is, when the rotation radius of the adjustment rope 3 needs to be increased, the positioning mechanism 8 is in a state of unlocking the paddle 61, and the elastic member 623 in a compressed state generates an elastic force, which causes the connecting block 5 to move radially outward in the strip hole 41, thereby increasing the rotation radius of the adjustment rope 3 connected to the connecting block 5, and at this time, the connecting block 5 drives the slider 621 to approach the wire wheel through the connecting rod 623, thereby moving the paddle 61 forward along the axial direction of the working tube 7; then the knob 821 of the rotating driving member 82 drives the screw 822 to rotate in the mounting hole 22, thereby pushing the positioning column 81 to approach and abut against the positioning block 611, thereby locking the paddle 61; finally, the user rotates the rotating wheel 9 to drive the wire wheel 4 to rotate, thereby causing the adjusting rope 3 to control the steering of the catheter 1, so that the catheter 1 is aligned with the target position;

[0034] B. When the user needs to reduce the rotation radius of the adjustment rope 3, first rotate the driving member 82 to move the positioning column 81 away from and unlock the paddle 61, then push the paddle 61 backward along the axial direction of the working tube 7 to move the slider 621 away from the wire wheel 4, and the two connecting rods 623 will drive the connecting block 5 to move radially inward in the strip hole 41. The connecting block 5 will compress the elastic member 623 to reduce the rotation radius of the adjustment rope 3 connected to the connecting block 5, and then rotate the driving member 82 to make the positioning column 81 approach and lock the paddle 61, so as to position the rotation radius of the adjustment rope 3 at this time, and finally the user rotates the rotating wheel 9 to drive the wire wheel 4 to rotate, so that the adjustment rope 3 controls the steering of the catheter 1 and aligns the catheter 1 with the target position.

Claims

1. A spinal endoscope, comprising a flexible catheter (1) and a handle (2) connected to the catheter (1). An adjusting rope (3) and a wire wheel (4) for controlling the steering of the catheter (1) are provided inside the handle (2). Rotating the adjusting rope (3) and the wire wheel (4) drives the catheter (1) to bend or straighten. It is characterized in that: The wire wheel (4) is arranged perpendicularly to the catheter (1); the wire wheel (4) is provided with strip holes (41) arranged in a radial direction; a connecting block (5) is installed in the strip hole (41); the two ends of the adjusting rope (3) are respectively connected to the catheter (1) and the connecting block (5); the handle (2) is also provided with an adjusting mechanism (6) capable of driving the connecting block (5) to move radially in the strip hole (41); the connecting block (5) is driven to move in the strip hole (41) by the adjusting mechanism (6) to adjust the rotation radius of the adjusting rope (3), thereby adjusting the bending degree of the catheter (1).

2. The spinal endoscope according to claim 1, wherein: The connecting block (5) comprises a first block (51) and a second block (52), one end of the first block (51) is connected to the adjusting mechanism (6) and is installed outside the strip hole (41), the other end of the first block (51) is installed inside the strip hole (41) and is fixedly connected to the second block (52), one end of the second block (52) is fixedly connected to the first block (51), and the other end of the second block (52) is connected to the adjusting rope (3) and is installed outside the strip hole (41), so that the adjusting mechanism (6) can drive the connecting block (5) to move radially inside the strip hole (41).

3. The spinal endoscope according to claim 2, characterized in that: A working tube (7) is also provided in the handle (2). The working tube (7) is axially connected to the catheter (1). One end of the working tube (7) is connected to the outer end of the catheter (1), and the other end of the working tube (7) is connected to an opening (21) at the rear end of the handle (2). The working channel formed by the working tube (7) can allow an instrument to extend from the rear end of the handle (2) to the front end of the catheter (1). The working tube (7) is driven by the catheter (1) to turn.

4. The spinal endoscope according to claim 3, wherein: The adjusting mechanism (6) comprises a paddle (61) and a transmission assembly (62); the paddle (61) can move along the axial direction of the working tube (7); the paddle (61) is connected to the transmission assembly (62); the transmission assembly (62) is connected to the connecting block (5); the top of the paddle (61) is exposed to the handle (2); and the paddle (61) can be moved to drive the connecting block (5) to move in the strip hole (41) with the help of the transmission assembly (62).

5. The spinal endoscope according to claim 4, wherein: The transmission assembly (62) comprises a slider (621) and a transmission part. The slider (621) is sleeved on the working tube (7). The slider (621) is rotatably connected to the paddle (61). The transmission part comprises two connecting rods (622). One end of the two connecting rods (622) is hinged to the slider (621). The other ends of the two connecting rods (622) are respectively hinged to the corresponding connecting blocks (5). The connecting rods (622) and the working tube (7) are arranged at an angle. The paddle (61) can be moved to drive the slider (621) along the working tube (7) to approach or move away from the wire wheel (4). The slider (621) enables the connecting rod (622) to drive the connecting block (5) to move in the strip hole (41).

6. The spinal endoscope according to claim 5, characterized in that: The transmission assembly (62) further comprises an elastic member (623), the two ends of which are respectively connected to two corresponding connection blocks (5), and the elastic member (623) causes the two connection blocks (5) to always be subjected to an elastic force moving radially outward.

7. The spinal endoscope according to claim 6, wherein: The elastic member (623) is a spring, and the connecting block (5) is provided with a fixing portion (53) for connecting with the elastic member (623). The fixing portion (53) comprises a rod body (531) for winding around the end of the elastic member (623), one end of the rod body (531) is fixedly connected to the connecting block (5), and the other end of the rod body (531) is provided with a limit block (532), and the limit block (532) can prevent the end of the elastic member (623) from falling off.

8. The spinal endoscope according to claim 4, wherein: The handle (2) is also provided with a positioning mechanism (8) for positioning the paddle (61), the positioning mechanism (8) comprising a positioning column (81) and a driving member (82), the driving member (82) being capable of driving the positioning column (81) to move closer to or away from the paddle (61) to achieve locking or unlocking of the paddle (61).

9. The spinal endoscope according to claim 8, wherein: The paddle (61) is provided with a positioning block (611) along the direction of the paddle movement; a mounting hole (22) perpendicular to the positioning block (611) is provided on the shell of the handle (2); a thread is provided in the mounting hole (22); the driving member (82) comprises a knob (821) exposed from the shell of the handle (2) and a screw rod (822) threadedly connected to the mounting hole (22); the positioning column (81) is fixedly connected to the screw rod (822); rotating the knob (821) will drive the screw rod (822) to rotate in the mounting hole (22) and move along the axial direction of the mounting hole (22), thereby driving the positioning column (81) to approach or move away from the positioning block (611) to achieve locking or unlocking of the paddle (61).

10. The spinal endoscope according to claim 1, characterized in that: The handle (2) is provided with a rotating wheel (9), and the rotating wheel (9) is provided with a transmission rod (91). The two ends of the transmission rod (91) are respectively fixedly connected to the rotating wheel (9) and the wire wheel (4). The rotation of the rotating wheel (9) drives the wire wheel (4) to rotate with the help of the transmission rod (91).

Images