Stay wire control device of rotatable endoscopic catheter

Abstract

The utility model provides a stay wire control device for a rotatable endoscopic catheter. The stay wire control device comprises a hand wheel seat, an outer hand wheel, a reel and an inner knob, and the inner knob and the outer hand wheel are both rotatably installed on the hand wheel seat; the outer hand wheel or the inner knob is provided with a linkage piece with an adjustable position, and the outer hand wheel and the inner knob can be converted into a synchronous motion state from an independent motion state by adjusting the position of the linkage piece; the outer hand wheel and the reel are sleeved outside the inner knob side by side, the reel is driven by the inner knob to rotate, and the outer hand wheel and the reel are both provided with a winding groove and a wire clamping hole. By arranging the linkage piece and the side-by-side reels, the two stay wires are taken up while paying off, the resistance for driving the endoscopic outer catheter to rotate is reduced, and the control stay wire for rotating the endoscopic outer catheter can be rapidly installed.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a wire pulling control device for a rotatable endoscope outer catheter. Background Art

[0002] During digestive endoscopic surgery, the doctor inserts the surgical instrument from the entrance of the endoscope instrument channel and then extends it from the instrument channel exit. Generally, the instrument channel exit of the endoscope is located at the 6 o'clock or 7 o'clock position of the field of view. By controlling the two knobs of the endoscope operating part, the instrument can bend up, down, left and right along with the distal end of the endoscope. In addition, the instrument can move forward and backward, so that the instrument has six degrees of freedom of movement in the endoscope. However, in some areas with more tricky angles, such as lesions at the 12 o'clock or 1 o'clock position of the field of view, the doctor needs to rotate the mirror to reach the lesion site, and the mirror needs to be kept in the rotating state during the operation, which will increase the difficulty of the operation. Patent CN214804576U discloses an endoscope external channel device that can rotate around the tip of the endoscope. The principle of this device is to achieve relative rotation of the rotating cap and the mounting cap by pulling two oppositely wound pull wires, thereby driving the rotation of the external channel. The cable control device disclosed in this patent has a cable installation process that involves first winding a cable around an adjusting wheel and tightening it, then passing another cable from under the adjusting wheel, inserting it into the cable clamping hole of the adjusting wheel in the opposite direction, and then clamping it into the cable clamping hole of the cable tightening wheel inside the adjusting wheel, and then tightening the other cable around the cable tightening wheel. The cable installation process of this cable control device is very cumbersome, and there is a situation where the cable clamping holes of the adjusting wheel and the cable tightening wheel are not in ideal positions, which greatly increases the installation time of the device. To solve this problem, a cable control device with side-by-side winding is proposed to achieve rapid installation of the control cable of a rotating catheter with a cable. Utility Model Content

[0003] In view of the above analysis, the present invention proposes a novel pull-wire control device for a rotatable endoscope outer catheter.

[0004] The utility model is mainly realized through the following technical solutions:

[0005] The utility model provides a wire pulling control device for a rotatable endoscope outer catheter, comprising a handwheel seat, an outer handwheel, a winding wheel, and an inner knob, wherein the inner knob and the outer handwheel are both rotatably mounted on the handwheel seat; a position-adjustable linkage member is provided on the outer handwheel or the inner knob, and the position of the linkage member can be adjusted to convert the outer handwheel and the inner knob from an independent motion state to a synchronous motion state; the outer handwheel and the winding wheel are sleeved side by side on the outside of the inner knob, the winding wheel is driven to rotate by the inner knob, and the outer handwheel and the winding wheel are both provided with a winding groove and a wire clamping hole.

[0006] Furthermore, the linkage member is a sliding button provided on the outer hand wheel or the inner knob, and the sliding button is slid so that the sliding button can cooperate with the tooth groove on the inner knob or the outer hand wheel.

[0007] Furthermore, the linkage member is a tightening screw provided on the outer hand wheel, and when the tightening screw is tightened, the tightening screw presses against the inner knob.

[0008] Furthermore, the linkage member is a cam button hinged on the outer hand wheel, and the inner knob is provided with a tooth groove that cooperates with the cam button. When the cam button is pressed, the cam button cooperates with the tooth groove on the inner knob.

[0009] Furthermore, a locking handle is provided on the handwheel seat, and rotating the locking handle can squeeze and lock the outer handwheel and the winding wheel.

[0010] Furthermore, the handwheel seat is provided with a docking tube that cooperates with the endoscope's own instrument channel and the endoscope's external catheter.

[0011] Furthermore, all the inlets of the docking pipes on the handwheel seat are provided with sealing caps.

[0012] Furthermore, the handwheel seat is provided with a snap-fitting hole that matches the catheter connector of the rotatable endoscope external catheter, and the ear of the catheter connector is locked in the snap-fitting hole through rotation, so that the rotatable endoscope external catheter is fixed relative to the handwheel seat.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] (1) The winding trough is designed in parallel, so that the wire can be directly installed in the winding trough for winding after being led out, which significantly reduces the difficulty of connecting the wire and the wire control device.

[0015] (2) A linkage is designed to allow the outer handwheel and the inner knob to move synchronously, so that the two pull wires can be released and reeled in at the same time, reducing the resistance to driving the rotation of the endoscope outer catheter.

[0016] (3) A snap-fit ​​hole is designed to match the catheter connector of the endoscope external catheter, thereby improving the firmness of the connection between the endoscope external catheter and the pull-wire control device.

[0017] (4) Sealing caps are installed at the two connecting tube entrances of the wire control device to prevent air leakage during surgical operation.

[0018] Other features and advantages of the present invention will be described in the following specification, and some of the advantages will become apparent from the description in the specification or be understood through the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the contents particularly pointed out in the specification, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. Throughout the accompanying drawings, the same reference symbols denote the same components.

[0020] Figures 1a-1e This is a schematic structural diagram of a pull-wire control device for a rotatable endoscope outer catheter according to a first embodiment of the present invention; wherein, Figure 1a An assembly drawing of the pull-wire control device; Figure 1b A side view of the pull wire control device; Figure 1c is an exploded view of the wire control device; Figure 1d Schematic diagram of the position of the linkage member (outer handwheel slider) of the pull wire control device is not synchronized movement; Figure 1e Schematic diagram of the synchronous movement position of the linkage member (external handwheel sliding button) of the wire control device of Example 1.

[0021] Figures 2a-2e This is a schematic structural diagram of a pull-wire control device for a rotatable endoscope outer catheter according to the second embodiment of the present invention; wherein, Figure 2a An assembly drawing of the pull-wire control device; Figure 2b A side view of the pull wire control device; Figure 2c is an exploded view of the wire control device; Figure 2d A schematic diagram of the linkage member (inner knob and slider) of the pull-wire control device not moving synchronously; Figure 2e This is a schematic diagram of the synchronous movement position of the linkage parts (inner knob and slide button) of the wire control device.

[0022] Figures 3a-3e This is a schematic structural diagram of a pull-wire control device for a rotatable endoscope outer catheter according to the third embodiment of the present invention; wherein, Figure 3a An assembly drawing of the pull-wire control device; Figure 3b A side view of the pull wire control device; Figure 3c is an exploded view of the wire control device; Figure 3d Schematic diagram of the linkage member of the wire control device (outer handwheel tightening screw) is not synchronized movement position; Figure 3e Schematic diagram of the synchronous movement position of the linkage member (external hand wheel tightening screw) of the control device of Example 1.

[0023] Figures 4a-4eThis is a schematic structural diagram of a pull-wire control device for a rotatable endoscope outer catheter according to a fourth embodiment of the present invention; wherein, Figure 4a An assembly drawing of the control device; Figure 4b A side view of the control device; Figure 4c is an exploded view of the control device; Figure 4d Schematic diagram of the unsynchronized movement position of the linkage member (external handwheel cam button) of the control device, Figure 4e Schematic diagram of the synchronous movement position of the linkage member (external handwheel cam button) of the control device of Example 1.

[0024] Figure 5 It is a schematic diagram of the structure of a catheter joint that cooperates with the pull-wire control device of the present invention.

[0025] Reference numerals:

[0026] 1. External handwheel, 12. External handwheel winding groove, 121. External handwheel limiting hole, 2. Internal knob, 21. Internal knob tooth groove, 22. Internal knob slide, 3. Winding wheel, 31. Winding wheel winding groove, 311. Winding wheel limiting hole, 41. External handwheel slide button, 42. Internal knob slide button, 43. External handwheel tightening screw, 44. External handwheel cam button, 5. Handwheel seat, 51. Snap-fit ​​hole, 6. Butt joint, 7. Butt joint sealing cap, 8. Locking handle, 9. Conduit connector. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the present invention and thus more clearly define the scope of protection claimed by the present invention, the present invention is described in detail below with respect to certain specific embodiments of the present invention. It should be noted that the following are only certain specific implementation methods of the present invention, which are only part of the embodiments of the present invention. The specific and direct description of the relevant structures is only for the convenience of understanding the present invention, and the specific features do not naturally and directly limit the scope of implementation of the present invention. The conventional selections and replacements made by those skilled in the art under the guidance of the present invention should be deemed to be within the scope of protection claimed by the present invention.

[0028] A pull wire control device for a rotatable endoscope external catheter is installed on the operating part of an endoscope and docked with the proximal catheter connector of the rotatable endoscope external catheter. The pull wire is retracted and extended by rotating the outer hand wheel or inner knob of the control device, thereby controlling the distal end of the catheter to rotate circumferentially around the distal end of the endoscope.

[0029] Example 1

[0030] like Figures 1a-1cAs shown, a wire pulling control device for a rotatable endoscope outer catheter includes an outer handwheel 1, an inner knob 2, a winding wheel 3, an outer handwheel sliding button 41, a handwheel seat 5, and a locking handle 8.

[0031] The outer handwheel 1 is a cylindrical structure with a stepped cylindrical surface, the inner knob 2 is a hollow shaft structure, and the winding wheel 3 is a hub disk structure. The outer handwheel 1 and the winding wheel 3 are both mounted on the outside of the inner knob 2, and the winding wheel 3 is driven to rotate by the inner knob 2.

[0032] The outer handwheel 1 is provided with two sliding button holes. The outer handwheel sliding button 41 is at least partially disposed in the sliding button holes and penetrates the side wall of the outer handwheel 1. The outer handwheel sliding button 41 has an inner protrusion of a door bolt structure. The outer surface of the inner knob 2 is provided with axial grooves 21 distributed around the circumference. The protrusion of the outer handwheel sliding button 41 can cooperate with the grooves 21. When the protrusion of the outer handwheel sliding button 41 does not contact the grooves 21 of the inner knob, the outer handwheel 1 and the inner knob 2 can rotate independently. Figure 1d When the outer handwheel slider 41 is turned so that its inner protrusion engages the tooth groove 21, the outer handwheel 1 and the inner knob 2 switch from independent motion to synchronized motion. The outer handwheel 1 also has a winding groove 12, which has a wire retaining hole 121. The winding wheel 3 also has a winding groove 31, which has a wire retaining hole 311.

[0033] The handwheel seat 5 has two parallel side walls, a bottom surface, and a stepped surface. The two parallel side walls of the handwheel seat 5 are provided with multiple holes, including an assembly hole for the outer handwheel 1, an assembly hole for the inner knob 2, and a mounting hole for the fixing strap. The handwheel seat 5 is provided with two docking tubes 6, one of which is mounted on the bottom surface of the handwheel seat 5 and docks with the instrument channel entrance of the endoscope itself during use. The other is mounted on the stepped surface of the handwheel seat 5 and docks with the catheter connector 9 of the rotatable endoscope's external catheter during use. Each docking tube 6 is provided with a sealing cap 7, which is a cap structure with a slit.

[0034] Mounting holes for the locking handle 8 are located on the sidewalls of the handwheel mount, facing the bottom and above the connecting pipe 6. The U-shaped locking handle 8 is hingedly mounted in these holes. Protruding undercuts are provided on either side of the ankle of the locking handle 8 for hinged connection. When the locking handle 8 is lifted, it rotates about the undercuts and applies a cam-type pressure to the outer handwheel 1 and winding reel 3, thereby hindering their rotation and locking them in place.

[0035] Two opposite long slot-shaped buckle holes 51 are provided on the side wall below the step surface of the handwheel seat 5, and the buckle holes 51 cooperate with the two hanging ears of the catheter connector 9 of the endoscope external catheter. Figure 5 shown.

[0036] Example 2

[0037] like Figures 2a-2c As shown, a wire pulling control device for a rotatable endoscope outer catheter includes an outer handwheel 1, an inner knob 2, a winding wheel 3, an inner knob slide button 42, a handwheel seat 5, a docking tube 6, a sealing cap 7, and a locking handle 8.

[0038] The inner knob 2 is provided with symmetrically distributed sliding grooves 22, and a bolt-shaped sliding button 42 is provided in the sliding grooves 22. The outer hand wheel 1 is provided with circumferentially distributed tooth grooves 13 that cooperate with the sliding button 42, and the sliding button 42 is provided with a protrusion that cooperates with the tooth grooves 13. Figure 2d As shown, when the sliding button 42 and the tooth groove 13 are not in contact, the outer hand wheel 1 and the inner knob 2 can rotate independently. After the sliding button 42 is pushed inward until it is engaged with the tooth groove 13, as shown in FIG. Figure 2e As shown, the outer hand wheel 1 and the inner knob 2 will change from an independent motion state to a synchronous motion state.

[0039] The handwheel base 5 is also equipped with two docking tubes 6, each with a sealing cap 7. The docking tube 6 on the bottom surface of the handwheel base 5 connects to the endoscope's instrument channel, while the docking tube 6 on the stepped surface of the handwheel base 5 connects to the catheter connector 9 of the endoscope's external catheter. A mounting hole for a locking handle 8 is provided on the side wall of the handwheel base 5, facing the bottom and above the docking tube 6. The protruding undercuts on either side of the locking handle 8 mate with these mounting holes. A snap-fit ​​hole 51 is provided on the side wall below the stepped surface of the handwheel base, which mates with the catheter connector 9 of the endoscope's external catheter.

[0040] Example 3

[0041] like Figures 3a-3c As shown, a wire pulling control device for a rotatable endoscope outer catheter includes an outer handwheel 1, an inner knob 2, a winding wheel 3, an outer handwheel tightening screw 43, a handwheel seat 5, a docking tube 6, a sealing cap 7, and a locking handle 8.

[0042] The outer hand wheel 1 is provided with symmetrically distributed threaded holes, in which tightening screws 43 are installed, and the inner knob 2 is provided with circumferential tooth grooves 21 that cooperate with the tightening screws. Figure 3d As shown, when the tightening screw 43 is not in contact with the tooth groove 21 on the inner knob, the outer hand wheel 1 and the inner knob 2 can rotate independently. When the tightening screw 43 is tightened to press against the tooth groove 21 of the inner knob, as shown in FIG. Figure 3e As shown, the outer hand wheel 1 and the inner knob 2 change from an independent rotation state to a synchronous motion state.

[0043] The winding wheel 3 and the outer handwheel 1 are sleeved side by side on the outside of the inner knob 2. The winding wheel 3 is driven to rotate by the inner knob 2. The inner knob 2 is rotatably mounted on the handwheel seat 5. The outer handwheel 5 is also provided with a locking handle 8. Lifting the locking handle 8 can squeeze the outer handwheel 1 and the winding wheel 3, thereby preventing the outer handwheel 1 and the winding wheel 3 from rotating. The handwheel seat 5 is also provided with two docking tubes 6 that respectively cooperate with the endoscope's own instrument channel and the endoscope's external catheter. Both docking tubes are provided with sealing caps 7.

[0044] Example 4

[0045] like Figures 4a-4c As shown, a wire pulling control device for a rotatable endoscope outer catheter includes an outer handwheel 1, an inner knob 2, a winding wheel 3, an outer handwheel cam button 44, a handwheel seat 5, a docking tube 6, a sealing cap 7, and a locking handle 8.

[0046] The outer handwheel 1 and the winding wheel 3 are mounted side by side on the outside of the inner knob 2. The end surface of the inner knob 2 protrudes from the end surface of the outer handwheel 1, and the other end is rotatably mounted on the handwheel seat 5. The inner knob 2 is provided with circumferentially distributed tooth grooves 21. The outer handwheel 1 is provided with a winding groove 12 and a limiting hole 121, and the winding wheel 3 is provided with a winding groove 31 and a limiting hole 311. The winding wheel 3 is assembled on the inner knob 2 and is driven to rotate by the inner knob 2.

[0047] The outer hand wheel 1 is provided with symmetrically distributed mounting holes for the cam buttons 44. The cam buttons 44 penetrate the side wall of the outer hand wheel and are rotatably mounted on the outer hand wheel 1. The cam buttons 44 are provided with cam portions. Figure 4d As shown, when the cam button 44 is lifted so that its cam portion does not contact the tooth groove 21 of the inner sliding button, the outer hand wheel 1 and the inner knob 2 can rotate independently. When the cam button 44 is pressed so that its cam portion engages with the tooth groove 21, the outer hand wheel 1 and the inner knob 2 will change from an independent motion state to a synchronous motion state, as shown in FIG. Figure 4e shown.

[0048] A locking handle 8 with a cam extrusion structure is also provided on the handwheel seat 5. The locking handle 8 is hinged on the handwheel seat 5. Lifting the locking handle 8 will apply an extrusion force to the outer handwheel 1 and the winding wheel 3, thereby hindering the rotation of the outer handwheel 1 and the winding wheel 3. Two docking tubes 6 are also provided on the handwheel seat 5, of which the docking tube 6 close to the locking handle 8 will be connected to the instrument channel entrance of the endoscope itself, and the other docking tube 6 is provided on the step surface of the handwheel seat 5 and will be connected with the catheter connector 9 of the rotatable endoscope external catheter. The two docking tubes 6 are both provided with a sealing cap 7, and the sealing cap 7 is provided with a slit to allow the instrument to pass through. On the side wall below the step surface of the handwheel seat 5, there are provided opposite long groove-shaped snap-fit ​​holes 51, and the snap-fit ​​holes 51 are matched with the catheter connector 9 of the rotatable endoscope external catheter.

[0049] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. A wire-pulling control device for a rotatable endoscope outer catheter, comprising a handwheel seat, an outer handwheel, a winding wheel, and an inner knob, wherein both the inner knob and the outer handwheel are rotatably mounted on the handwheel seat; a position-adjustable linkage member is provided on the outer handwheel or the inner knob, characterized in that: Adjusting the position of the linkage part can convert the outer handwheel and the inner knob from an independent motion state to a synchronous motion state; the outer handwheel and the winding wheel are arranged side by side on the outside of the inner knob, the winding wheel is driven to rotate by the inner knob, and the outer handwheel and the winding wheel are both provided with a winding groove and a wire clamping hole.

2. The pull-wire control device for a rotatable endoscope outer catheter according to claim 1, characterized in that: The linkage member is a sliding button provided on the outer hand wheel or the inner knob. The sliding button is slid so that the sliding button can be matched with the tooth groove on the inner knob or the outer hand wheel.

3. The pull-wire control device for a rotatable endoscope outer catheter according to claim 1, characterized in that: The linkage member is a tightening screw provided on the outer hand wheel. When the tightening screw is tightened, the tightening screw presses against the inner knob.

4. The pull-wire control device for a rotatable endoscope outer catheter according to claim 1, characterized in that: The linkage member is a cam button hinged on the outer hand wheel, and the inner knob is provided with a tooth groove that cooperates with the cam button. When the cam button is pressed, the cam button cooperates with the tooth groove on the inner knob.

5. The pull-wire control device for a rotatable endoscope outer catheter according to claim 1, characterized in that: A locking handle is provided on the hand wheel seat, and rotating the locking handle can squeeze and lock the outer hand wheel and the winding wheel.

6. The pull-wire control device for a rotatable endoscope outer catheter according to claim 1, characterized in that: The hand wheel seat is provided with a docking tube which cooperates with the endoscope's own instrument channel and the endoscope's external catheter.

7. The pull-wire control device for a rotatable endoscope outer catheter according to claim 6, characterized in that: All the butt-jointing pipe entrances on the handwheel seat are provided with sealing caps.

8. The pull-wire control device for a rotatable endoscope outer catheter according to claim 1, characterized in that: The handwheel seat is provided with a buckling hole that matches the catheter connector of the rotatable endoscope outer catheter. The hanging ear of the catheter connector is locked in the buckling hole through rotation, so that the rotatable endoscope outer catheter is fixed relative to the handwheel seat.

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