Control system for interventional surgical instruments

Abstract

The application discloses an intervention surgery instrument control system, which comprises a driving mechanism, an elongated object support and a driving box. The driving box comprises a fixed plate and a first sliding plate, the first sliding plate is slidably arranged on the fixed plate, and the front end of the fixed plate is provided with a second supporting frame. The elongated object support is provided with an elongated object channel and an opening or a gap for transversely putting in and taking out the elongated object along the elongated object channel. With the movement of the first sliding plate along the fixed plate, the effective supporting section of the elongated object support is lengthened or shortened. The driving box is connected with the first sliding plate. The effective supporting section of the elongated object support is positioned between the driving box and the second supporting frame. Through the application of the above technical scheme, the length of the elongated object extending out of the elongated object channel can be automatically adjusted, and the surgery effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of interventional surgical instruments, in particular to a control system of an interventional surgical instrument. BACKGROUND

[0002] In the related art, a patient who needs to undergo an interventional surgery is first inserted by a doctor through a blood vessel puncture A sheath tube is inserted into a specific blood vessel for surgery (to establish an internal and external access inlet for interventional treatment), and then a catheter and a guide wire are inserted through the sheath tube to find a specific lesion position, and then treatment or the placement of a stent is performed, and a rear-end Y valve is connected to facilitate the injection of liquid for examination or treatment, such as contrast medium. The execution device for the interventional surgery has been applied to a certain extent in the interventional surgery, but still has some deficiencies, for example, the overall position of the manually positioned device needs to be adjusted with the patient or the length of the sheath tube that is extended, which consumes a lot of manpower and is not conducive to accurate positioning, thereby affecting the surgical effect. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art. To this end, one object of the present application is to provide a control system of an interventional surgical instrument having a driving mechanism and an elongated object support, which can automatically adjust the length of the elongated object that is extended outside the elongated object channel, thereby improving the surgical effect.

[0004] The control system of the interventional surgical instrument according to the embodiment of the present application comprises a driving mechanism, an elongated object support, and a driving box comprising a fixed plate and a first sliding plate, the first sliding plate being slidably arranged on the fixed plate, the fixed plate being provided at the front end with a second supporting bracket; the elongated object support is provided with an elongated object channel and an opening or a gap for transversely inserting and removing the elongated object along the elongated object channel; as the first sliding plate moves along the fixed plate, the effective support section of the elongated object support becomes longer or shorter; the driving box is connected with the first sliding plate; and the effective support section of the elongated object support is positioned between the driving box and the second supporting bracket.

[0005] The control system of the interventional surgical instrument according to the embodiment of the present application can automatically adjust the length of the elongated object that is extended outside the elongated object channel, thereby improving the surgical effect.

[0006] In addition, the control system of the interventional surgical instrument according to the above-mentioned embodiments of the present application can also have the following additional technical features:

[0007] In some embodiments, the driving mechanism further comprises a second sliding plate and a driving device, the fixed plate, the first sliding plate and the second sliding plate are arranged in layers, the second sliding plate is slidably arranged on the first sliding plate, and the driving box is fixed on the second sliding plate; the driving device is connected with the fixed plate, the first sliding plate and the second sliding plate respectively to drive the first sliding plate and the second sliding plate to move; the front end of the first sliding plate is connected with a first supporting frame for supporting the effective supporting section of the elongated object supporting member.

[0008] In some embodiments, the first supporting frame and the second supporting frame are located on one side of the driving mechanism, and the driving box is arranged on the side of the driving mechanism through a driving box mounting seat, and the driving device is arranged on the other side of the driving mechanism.

[0009] In some embodiments, the driving box mounting seat comprises a first mounting plate mounted on the second sliding plate, a second mounting plate bent and extended from the edge of the first mounting plate towards the fixed plate, and a third mounting plate bent and extended from the edge of the second mounting plate away from the driving mechanism, and the driving box is fixed on the third mounting plate.

[0010] In some embodiments, one of the third mounting plate and the driving box is provided with a positioning protrusion, and the other is provided with a positioning groove, the positioning protrusion and the positioning groove are matched to mount the driving box on the third mounting plate; a power mechanism of the driving box is arranged below the third mounting plate, an output shaft of the power mechanism penetrates the third mounting plate from below to above, the driving box is mounted on the third mounting plate, and the output shaft of the power mechanism is connected with the input shaft of the driving box to provide power to the driving box.

[0011] In some embodiments, the control system further comprises an operation handle formed through the third mounting plate and the shell of the power mechanism.

[0012] In some embodiments, the elongated object supporting member is a telescopic member, the front end of the elongated object supporting member is provided with a first connecting frame, and the rear end is provided with a second connecting frame; the first connecting frame is used to connect the front end of the second supporting frame; and the second connecting frame is connected with the second sliding plate.

[0013] In some embodiments, the first supporting frame and the second supporting frame each comprise a supporting part which is supported below the elongated object supporting member.

[0014] In some embodiments, the supporting part of the second supporting frame is in the shape of a long strip extending in the front-rear direction, and the sum of the effective supporting lengths of the first supporting frame and the second supporting frame matches the shortest length of the elongated object supporting member.

[0015] In some embodiments, the elongated object support comprises a support frame, a plurality of elongated object holders, the support frame being retractable in the front-rear direction, the plurality of elongated object holders being connected to the support frame and arranged in the front-rear direction on the support frame, and when the support frame is retracted in the front-rear direction, the plurality of elongated object holders move closer to or further away from each other in the front-rear direction along with the support frame, and the positioning spaces of the plurality of elongated object holders form the elongated object channel.

[0016] In some embodiments, the support frame comprises a plurality of telescopic units, each telescopic unit comprising a first connecting rod and a second connecting rod that are crossed and hinged, and the plurality of telescopic units are connected in sequence, and in each two adjacent telescopic units, the two connecting rod ends of one telescopic unit are hinged to the two connecting rod ends of the other telescopic unit, and the rotation plane of the hinge is horizontally arranged.

[0017] In some embodiments, the elongated object holder is provided with a positioning slot with an opening, and the positioning slots of the plurality of elongated object holders are adapted to face each other in the front-rear direction and form the elongated object channel.

[0018] In some embodiments, the elongated object holder comprises a cylindrical portion and a flange portion, the cylindrical portion is horizontally arranged, one side of the cylindrical portion is connected to the support frame, and the opposite side is provided with the opening, the flange portion is connected to the opening edge of the cylindrical portion, and the flanges of the two opposite edges of the opening of the cylindrical portion are arc-shaped and extend away from each other in the direction of the outside of the cylindrical portion, and the flange portion and the cylindrical portion are arc-shapedly connected.

[0019] In some embodiments, the elongated object support is a flexible support tube, the flexible support tube is provided with an opening seam through which the catheter channel passes, one of the second sliding plate and the drive box is provided with a third connecting portion at the front end, and the front end of the second supporting frame is provided with a fourth connecting portion, the third connecting portion is inserted into the catheter channel from the opening seam to partially open the opening seam, facilitating the entry of the elongated object into the catheter channel, and the front end of the flexible support tube is fixed to the fourth connecting portion, and the third connecting portion slides along the flexible support tube as the first sliding plate and the second sliding plate move. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic diagram of a control system of an interventional surgical instrument in some embodiments of the present application.

[0021] Figure 2 is Figure 1 an exploded schematic diagram.

[0022] Figure 3 is a structural schematic diagram of a driving mechanism in some embodiments of the present application (showing the state of the driving mechanism when it is extended).

[0023] Figure 4 is a sectional view of Figure 3

[0024] Figure 5 is a schematic view of the structure of the driving mechanism in some embodiments of the present application (showing the state when the driving mechanism is contracted).

[0025] Figure 6 is a sectional view of Figure 5

[0026] Figure 7 is a sectional view of Figure 5

[0027] Figure 8 is a schematic view of the structure of the elongated object support in some embodiments of the present application (showing the state when the elongated object is mounted on the elongated object support and the elongated object support is contracted).

[0028] Figure 9 is a bottom view of the elongated object support in some embodiments of the present application.

[0029] Figure 10 is a side view of the elongated object support in some embodiments of the present application.

[0030] Figure 11 is an exploded schematic view of the elongated object support in some embodiments of the present application (showing the state when the elongated object support is contracted).

[0031] Figure 12 is a schematic view of the elongated object support in some embodiments of the present application (showing the state when the elongated object support is expanded).

[0032] Figure 13 is a schematic view of the connection between the elongated object bracket and the hinge shaft in some embodiments of the present application.

[0033] Figure 14 is a schematic view of the connection between the elongated object bracket and the hinge shaft in some embodiments of the present application.

[0034] Figure 15 is a schematic view of the connection between the elongated object bracket and the hinge shaft in some embodiments of the present application.

[0035] Reference signs:

[0036] a control system 100 of an interventional surgical instrument,

[0037] a driving mechanism 1,

[0038] a first slide plate 11, a first bracket 111,

[0039] a second slide plate 12, ​​​

[0040] fixed plate 13, second supporting frame 131, insertion hole 101, supporting surface 1a,

[0041] drive assembly 15, driven wheel 153, drive belt 151,

[0042] drive member 16,

[0043] first belt pressing seat 17a, second belt pressing seat 17b, positioning portion 17c, pressing portion 17d, mounting portion 17e,

[0044] first guide rail 181a, first guide block 181b, second guide rail 182a, second guide block 182b,

[0045] position sensor 19,

[0046] elongated object supporting member 2,

[0047] telescopic unit 21, first connecting rod 211, second connecting rod 212, mounting hole 201, hinge shaft 23,

[0048] first connecting frame 24a, second connecting frame 24b, connecting seat 241, insertion portion 242, protrusion 2421,

[0049] elongated object supporting frame 25, positioning groove 250, cylindrical portion 251, first side 251a, second side 251b, flange portion 252, elastic portion 253,

[0050] drive box mounting seat 3, first mounting plate 31, second mounting plate 32, third mounting plate 33,

[0051] drive box 4,

[0052] sheath 9, elongated object 91. DETAILED DESCRIPTION

[0053] Embodiments of the present application are described in detail below with reference to the attached drawings, wherein the same or like reference numerals in the drawings represent the same or like elements or elements having the same or similar function. The embodiments described below are exemplary and are intended to explain the present application, and should not be understood as limiting the present application.

[0054] In combination Figures 1 to 15According to an embodiment of the present invention, a control system 100 for interventional surgical instruments includes: a drive mechanism 1, an elongated object support 2, and a drive box 4. The drive mechanism 1 includes a fixed plate 13 and a first sliding plate 11. The first sliding plate 11 is slidably disposed on the fixed plate 13, and a second support 131 is provided at the front end of the fixed plate 13. The elongated object support 2 is provided with an elongated object channel and an opening or gap for laterally inserting and removing an elongated object 91 along the elongated object channel. As the first sliding plate 11 moves along the fixed plate 13, the effective support section of the elongated object support 2 becomes longer or shorter. The drive box 4 is connected to the first sliding plate 11. The effective support section of the elongated object support 2 is positioned between the drive box 4 and the second support 131. Specifically, the elongated object channel on the elongated object support 2 is suitable for positioning and supporting the elongated object 91. The elongated object 91 is laterally inserted into the elongated object channel, as shown in the figure. Figure 1 The elongated object 91 can be inserted into the elongated object channel through the opening or gap in the vertical direction. The length of the elongated object 91 extending out of the elongated object channel can be adjusted as the effective support section of the elongated object support 2 lengthens or shortens. Furthermore, the effective support section of the elongated object support 2 is adapted to be lengthened or shortened by the drive box 4 or the drive mechanism 1, thereby achieving adjustment of the length of the elongated object 91. The drive box 4 is connected to the first slide plate 11 of the drive mechanism 1. When the first slide plate 11 slides, it can drive the drive box 4 to move. The effective support section of the elongated object support 2 can be positioned between the second support frame 131 and the drive box 4. When the effective support section of the elongated object support 2 lengthens or shortens, it can provide support for the effective support section, improving installation efficiency and structural stability.

[0055] According to the control system 100 of the interventional surgical instrument of the present invention, the elongated support member 2 is provided with an elongated channel for mounting an elongated object 91 and an effective support section that can be extended and retracted. The drive mechanism 1 drives the elongated support member 2 to extend and retract, thereby automatically adjusting the length of the elongated object 91 extending out of the elongated channel, which is beneficial to improving the surgical effect.

[0056] Combination Figure 3Optionally, the driving mechanism 1 further comprises a second sliding plate 12 and a driving device, the fixed plate 13, the first sliding plate 11 and the second sliding plate 12 are arranged in layers, the second sliding plate 12 is slidably arranged on the first sliding plate 11, and the second sliding plate 12 slides relative to the first sliding plate 11. The driving box 4 is fixed to the second sliding plate 12; the driving device is connected to the fixed plate 13, the first sliding plate 11 and the second sliding plate 12 respectively to drive the first sliding plate 11 and the second sliding plate 12 to move or extend; the front end of the first sliding plate 11 is connected with a first supporting bracket 111 for supporting the effective supporting section of the elongated object supporting member 2. That is, the second sliding plate 12 is slidable relative to the first sliding plate 11, and the driving device is connected to the second sliding plate 12. The second sliding plate 12 can be connected to the driven structure. Since the first sliding plate 11 is slidable relative to the fixed plate 13, and the second sliding plate 12 is slidable relative to the first sliding plate 11, the relative sliding distance of the fixed plate 13 and the second sliding plate 12 can be extended, and the extension range of the supported object can be extended.

[0057] Specifically, the driving box 4 of the guide wire can be fixedly connected to the second sliding plate 12, the sheath 9 is connected to the second supporting bracket 131 for guiding and supporting one end of the elongated object of the guide wire, and the other end is slidably inserted into the sheath 9. During use, the driving device drives the first sliding plate 11, the second sliding plate 12 and the fixed plate 13 to move forward and backward relative to each other to adjust the relative distance between the one end of the elongated object and the sheath 9, that is, to adjust the length of the elongated object between the second sliding plate 12 and the sheath 9, so as to achieve the purpose of adjusting the length of the elongated object extending out of the sheath 9. Further, the two ends of the elongated object supporting member 2 are respectively connected to the second sliding plate 12 or the driving box 4 and the second supporting bracket 131, and follow the adjustment of the relative distance between the second sliding plate 12 and the second supporting bracket 131 to extend or retract. The first supporting bracket 111 and the second supporting bracket 131 can be used to support the elongated object supporting member 2, and the elongated object supporting member 2 can be used to support the elongated object 91.

[0058] According to the foregoing, after the second sliding plate 12 is stacked on the first sliding plate 11, the second sliding plate 12 can continue to slide on the basis of the first sliding plate 11, the length of the driving mechanism 1 can be extended, and a multi-stage sliding mechanism can be constructed. In actual application, the driving device can drive the first sliding plate 11 and the second sliding plate 12 to slide simultaneously, thereby improving the working efficiency of the driving mechanism 1.

[0059] In addition, the first sliding plate 11 is provided with the first supporting bracket 111 at the front end, and the fixed plate 13 is provided with the second supporting bracket 131 at the front end. When the first sliding plate 11 coincides with the fixed plate 13, the first supporting bracket 111 and the second supporting bracket 131 can cooperate with each other. When the first sliding plate 11 slides, the first supporting bracket 111 is always located between the fixed plate 13 and the second sliding plate 12 to provide support in the middle of the driving mechanism 1, thereby improving the stability of operation and the overall structure.

[0060] Optionally, the driving mechanism 1 can also be provided with a third sliding plate or a fourth sliding plate, etc. to realize more stages of movement, so as to further increase the telescopic length of the driving mechanism.

[0061] In a specific application, the third support position can be directly provided on the second sliding plate 12 or other objects mounted thereon, so that the third support position, the first supporting frame 111 and the second supporting frame 131 realize support from three positions, and the effective support length is variable during the sliding process of the first sliding plate 11 and the second sliding plate 12 relative to the fixed plate 13. When applied to the control system of the interventional surgical instrument, the other objects can be the driving box.

[0062] Optionally, the first supporting frame 111 and the second supporting frame 131 are located on one side of the driving mechanism 1, and the driving box 4 is arranged on the side of the driving mechanism 1 through the driving box mounting seat 3, and the driving device is arranged on the other side of the driving mechanism 1, so as to facilitate space arrangement and simplify the structure of the control system. Specifically, when the driving mechanism 1 is applied to the control system 100 of the interventional surgical instrument, the driving box 4 can be mounted on one side of the second sliding plate 12, thereby increasing the design space and facilitating the improvement of space arrangement efficiency. Specifically, the driving box 4 can be arranged in line with the supporting part, so that the elongated object 91 can extend linearly to the supporting part in the front-rear direction, thereby facilitating space arrangement and simplifying the structure. In actual application, the elongated object supporting member 2 can be directly connected with the second sliding plate 12 or the driving box mounting seat 3, or indirectly connected through the driving box 4 arranged on the driving box mounting seat 3.

[0063] In combination with Figure 1 and Figure 2 Optionally, the driving box mounting seat 3 comprises a first mounting plate 31 mounted on the second sliding plate 12, a second mounting plate 32 bent and extended from the edge of the first mounting plate 31 towards the fixed plate 13, and a third mounting plate 33 bent and extended from the edge of the second mounting plate 32 away from the driving mechanism 1, and the driving box 4 is fixed to the third mounting plate 33. Specifically, the second sliding plate 12 is located on the first sliding plate 11, and the first sliding plate 11 is located on the fixed plate 13. The first mounting plate 31, the second mounting plate 32 and the third mounting plate 33 of the mounting seat extend from the second sliding plate 12 towards the fixed plate 13 and then extend away from the driving mechanism 1, thereby constructing a stepped structure, and the second mounting plate 32 and the third mounting plate 33 construct an "L" shaped structure, thereby providing a placement space for the driving box 4 and facilitating space arrangement.

[0064] Optionally, the first mounting plate 31, the second mounting plate 32 and the third mounting plate 33 can be integrally formed, thereby facilitating manufacturing and assembly and improving structural stability.

[0065] Optionally, one of the third mounting plate 33 and the drive box 4 is provided with a positioning protrusion, and the other is provided with a positioning groove, the positioning protrusion and the positioning groove are matched to mount the drive box 4 on the third mounting plate 33, which can improve the stability of the connection and the structural strength. The power mechanism of the drive box 4 is arranged below the third mounting plate 33, the output shaft of the power mechanism penetrates the third mounting plate 33 from bottom to top, the drive box 4 is mounted on the third mounting plate 33, and the output shaft of the power mechanism is connected with the input shaft of the drive box 4 to provide power for the drive box 4.

[0066] Optionally, the control system further comprises an operation handle formed through the third mounting plate 33 and the shell of the power mechanism, so as to facilitate operation and improve the convenience of use.

[0067] In combination Figure 3 Optionally, the driving device comprises a transmission assembly 15, a first belt pressing seat 17a, a second belt pressing seat 17b and a driving piece 16. Specifically, the transmission assembly 15 comprises a driving wheel, a driven wheel 153 and a transmission belt 151, the driving wheel and the driven wheel 153 are arranged at the front and rear ends of the first sliding plate 11 respectively, and the transmission belt 151 is in transmission connection with the driving wheel and the driven wheel 153, so that the rotation of the driving wheel can drive the rotation of the transmission belt 151. The first belt pressing seat 17a is connected with the transmission belt 151 and the second sliding plate 12 respectively; the second belt pressing seat 17b is connected with the transmission belt 151 and the fixed plate 13 respectively, and the driving piece 16 is in transmission connection with the driving wheel and drives the rotation of the driving wheel. That is, the second belt pressing seat 17b can make the first sliding plate 11 slide relative to the fixed plate 13, and the first belt pressing seat 17a can realize the sliding of the second sliding plate 12 relative to the first sliding plate 11, so as to improve the stability of operation. During use, when the driving wheel rotates, the transmission belt 151 is driven to move, the first belt pressing seat 17a is driven to move by the transmission belt 151, and then the second sliding plate 12 and the first sliding plate 11 are driven to slide relative to the fixed plate 13. As described above, the drive box 4 and the sheath 9 are connected to the second sliding plate 12 and the fixed plate 13 respectively, therefore, through the driving device, the relative movement speed of the drive box 4 and the sheath 9 can be increased, and the purpose of speed doubling is achieved.

[0068] For example, Figure 2As shown, the second sliding plate 12 and the fixed plate 13 are respectively arranged on the upper and lower sides of the first sliding plate 11, the first pressing belt seat 17a can drive the second sliding plate 12 and the first sliding plate 11 to be connected through the transmission belt 151, and the second pressing belt seat 17b can drive the fixed plate 13 and the first sliding plate 11 to be connected through the transmission belt 151. When the driving member 16 drives the driving wheel to rotate, the driving wheel drives the first sliding plate 11 connected thereto to slide, the transmission belt 151 can drive the first pressing belt seat 17a connected with the transmission belt 151 to move, and then the second sliding plate 12 connected with the first pressing belt seat 17a moves. That is, when the driving member 16 provides power, the transmission belt 151 moves between the driving wheel and the driven wheel 153, which can synchronously drive the first sliding plate 11 and the second sliding plate 12 to slide, thereby improving the sliding speed and realizing double-speed sliding to quickly move the second sliding plate 12 to the target position.

[0069] Optionally, the transmission assembly can be in the form of flat belt transmission, V-belt transmission, multi-wedge belt transmission or synchronous belt transmission, that is, the transmission form can be changed according to the actual situation, and the application is not limited thereto. According to the driving mechanism 1 of the embodiment of the application, the transmission assembly is flat belt transmission, that is, the flat belt with a rectangular cross section, which is simple in structure, good in stability, and convenient to assemble and maintain.

[0070] In combination Figure 5 Optionally, the first pressing belt seat 17a is connected to the front end of the second sliding plate 12, and the second pressing belt seat 17b is connected to the rear end of the fixed plate 13, so as to prolong the sliding distance and improve the transmission efficiency. Specifically, the second sliding plate 12 can move backward following the transmission belt 151, the first pressing belt seat 17a connected to the front end of the second sliding plate 12 can prolong the distance of the second sliding plate 12 sliding backward. In other words, when the transmission belt 151 drives the first pressing belt seat 17a to move, the first pressing belt seat 17a can move from the front end to the rear end of the first sliding plate 11, and the first pressing belt seat 17a can have a larger moving range, so that the second sliding plate 12 will also have a larger moving distance. Similarly, the second pressing belt seat 17b is connected to the rear end of the fixed plate 13, and when the driving wheel rotates, the transmission belt 151 drives the first sliding plate 11 to slide relative to the fixed plate 13.

[0071] Referring to Figure 3 and Figure 5 , Figure 5 Fig. 1 shows the state of the first sliding plate 11 and the second sliding plate 12 not sliding, Figure 3The first slide plate 11 and the second slide plate 12 are shown in the sliding state. It can be seen that the driving device is located on the side of the first slide plate 11, the first compression belt seat 17a and the second compression belt seat 17b are respectively located on the side of the second slide plate 12 and the fixed plate 13, the upper part of the transmission belt 151 is in transmission connection with the first compression belt seat 17a, the lower part of the transmission belt 151 is in transmission connection with the second compression belt seat 17b, when the transmission belt 151 rotates, the first compression belt seat 17a located at the front end of the second slide plate 12 is driven to move forward and backward, thereby driving the second slide plate 12 to slide forward and backward on the first slide plate 11; at the same time, the transmission belt 151 drives the first slide plate 11 to slide forward and backward on the fixed plate 13.

[0072] In combination Figure 6 The first compression belt seat 17a and the second compression belt seat 17b each include a mounting portion 17e, a positioning portion 17c connected with the mounting portion 17e, and a compression portion 17d matched with the positioning portion 17c to compress the synchronous belt.

[0073] In combination Figure 5 And Figure 6 According to the driving mechanism 1 of the embodiment of the present application, the mounting portion 17e and the positioning portion 17c are in an "L" shape and can be in an integrated structure, wherein the mounting portion 17e is a vertical segment and is suitable for fixed connection with the side of the second slide plate 12 or the fixed plate 13, for example, through screw connection. The positioning portion 17c is a horizontal segment and is suitable for up-down matching with the compression portion 17d, and the transmission belt 151 is located between the compression portion 17d and the horizontal segment, wherein the upper surface of the compression portion 17d is provided with corrugated protrusions and grooves, which can improve the friction between the transmission belt and the compression portion 17d and improve the stability of the compression belt seat matched with the transmission belt 151.

[0074] The transmission belt 151 can be a synchronous belt, and the driving wheel and the driven wheel 153 are gears matched with the synchronous belt; the compression portion 17d is provided with positioning teeth inserted into the tooth gap of the synchronous belt. The tooth surface matched with the teeth of the synchronous belt is arranged on the compression portion 17d, which not only can firmly position the transmission belt and prevent the transmission belt from moving relative to the first compression belt seat 17a and the second compression belt seat 17b to improve the stability of transmission, but also can improve the convenience of installation. The positioning portion 17c is fixed to the second slide plate 12 through the mounting portion 17e, the teeth of the compression portion 17d are matched with the teeth of the transmission belt 151, the position of the compression portion 17d is adjusted by pushing the compression portion 17d, and the compression portion 17d is fixedly pressed with the positioning portion 17c to clamp the transmission belt 151.

[0075] In combination Figure 4Optionally, the first linear slide rail is arranged between the second slide plate 12 and the first slide plate 11, and comprises a first guide rail 181a and a first guide block 181b. The first guide rail 181a extends in the front-rear direction, and the first guide block 181b is slidably connected to the first guide rail 181a in the front-rear direction. One of the first guide rail 181a and the first guide block 181b is connected to the second slide plate 12, and the other is connected to the first slide plate 11. For example, the lower end of the second slide plate 12 is provided with the first guide rail 181a, the first guide block 181b is connected to the first slide plate 11, and the first guide block 181b cooperates with the first guide rail 181a to enable the second slide plate 12 to slide relative to the first slide plate 11, thereby improving the stability of operation.

[0076] Optionally, the second linear slide rail is arranged between the first slide plate 11 and the fixed plate 13, and comprises a second guide rail 182a and a second guide block 182b. The second guide rail 182a extends in the front-rear direction, and the second guide block 182b is slidably connected to the second guide rail 182a in the front-rear direction. One of the second guide rail 182a and the second guide block 182b is connected to the first slide plate 11, and the other is connected to the fixed plate 13. For example, the lower end of the first slide plate 11 is provided with the second guide rail 182a, the second guide block 182b is connected to the fixed plate 13, and the second guide block 182b cooperates with the second guide rail 182a to enable the first slide plate 11 to slide relative to the fixed plate 13, thereby improving the stability of operation.

[0077] In combination Figure 1 and Figure 3 Optionally, the second slide plate 12, the first slide plate 11, and the fixed plate 13 are arranged in a stacked manner from top to bottom, and the first supporting frame 111 and the second supporting frame 131 each comprise a supporting portion. The supporting portion is arranged on one side of the second slide plate 12, and the driving device is arranged on the other side of the second slide plate 12. Thus, when the driving mechanism 1 is applied to the control system 100 of the interventional surgical instrument, the driving box 4 can be installed on one side of the second slide plate 12, thereby providing a larger design space and improving the space arrangement efficiency. Specifically, the driving box 4 can be arranged in line with the supporting portion, so that the catheter or guide wire can extend linearly in the front-rear direction to the supporting portion, thereby facilitating space arrangement and simplifying the structure.

[0078] In combination Figure 5 and Figure 7 Optionally, the first supporting frame 111 and the second supporting frame 131 each comprise a horizontal supporting surface 1a, and the supporting surface 1a of the first supporting frame 111 and the supporting surface 1a of the second supporting frame 131 are flush. Specifically, the horizontal supporting surface 1a can improve the supporting effect, so that the object placed thereon can realize surface contact with the supporting portion, and the supporting surface 1a of the first supporting frame 111 and the supporting surface 1a of the second supporting frame 131 are flush, so that they can jointly support and improve the stability.

[0079] For example, in combination with Figure 3 Since the first support frame 111 and the second support frame 131 are used to support the object on the second slide plate 12, the first support frame 111 and the second support frame 131 can be configured in the form of extending upwardly out of the support surface 1a along the fixed plate 13, such as the second support frame 131 can be configured in the form of extending upwardly first and then forwardly. The first support frame 111 can be configured in the form of extending upwardly along the front end of the first slide plate 11 in a stepped manner, and the support surface 1a of the first support frame 111 and the second support frame 131 is flush, which is beneficial to improve the support effect.

[0080] Optionally, the second support frame 131 is arranged on the front side of the first support frame 111, the support part of the second support frame 131 is in the form of a long strip extending along the front-rear direction, which can increase the support surface and improve the support stability; and the upper surface of the front end of the support part of the second support frame 131 is provided with a plug-in hole 101. That is, the second support frame 131 can extend outwardly to place or connect a longer object, and the plug-in hole 101 is arranged at the front end of the second support frame 131, which can be used for plug-in positioning with the object, achieving quick positioning and improving the reliability of placement.

[0081] In combination with Figure 3 and Figure 5 Optionally, the fixed plate 13 is provided with a position sensor 19 opposite to the driving device to detect the position of the movement of the fixed plate 13, which can improve the stability of operation and play a protective effect on the driving mechanism 1.

[0082] The fixed plate 13 is provided with a plurality of position sensors 19 arranged at intervals along the front-rear direction to detect the driving position of the driving device, which can be reflected on the relative position between any two of the first slide plate 11, the second slide plate 12 and the fixed plate 13, or the position of the first belt pressing seat 17a, the second belt pressing seat 17b, etc.

[0083] In combination with Figure 7 and Figure 9 Optionally, the elongated object support 2 is a telescopic member, the front end of the elongated object support 2 is provided with a first connecting frame 24a, and the rear end is provided with a second connecting frame 24b; the first connecting frame 24a is used to connect the front end of the second support frame 131; the second connecting frame 24b is connected with the second slide plate 12, so as to position the effective support end of the elongated object support 2 between the driving box 4 and the second support frame 131. Specifically, the second slide plate 12 or the driving box 4 can be connected with the second connecting frame 24b, and the second slide plate 12 can drive the second connecting frame 24b to move close to or away from the second support frame 131 when sliding, so as to realize the telescoping of the elongated object support 2. The first connecting frame 24a and the second connecting frame 24b can facilitate the quick assembly of the elongated object support 2 and improve the stability of connection.

[0084] In combination Figure 8 Optionally, the first and second connecting frames 24a and 24b each comprise a connecting seat 241 for connecting the support and a plug-in portion 242 connected to the connecting seat 241 and extending downward, so that the connecting seat 241 can connect the support and the plug-in portion 242 extends downward to be plugged on the instrument from top to bottom, the stability of plugging can be improved by using the gravity of the support, and the support can be connected to the instrument by the connecting frame. Further, the plug-in portion 242 is provided with a protrusion 2421 at the upper end to limit the plugging length of the plug-in portion 242. According to the foregoing, the connecting seat 241 is hinged to the support to improve the stability of connection.

[0085] Optionally, the connecting seat 241 is connected with two plug-in portions 242 arranged at left and right to improve the stability of plugging and facilitate the simplification of structure. In combination Figure 12 The two plug-in portions 242 can be integrally formed, or the connecting seat 241 and the plug-in portion 242 are configured to be integrally formed to facilitate manufacturing and assembly.

[0086] In combination Figure 3 And Figure 5 Optionally, the first and second supporting frames 111 and 131 each comprise a supporting portion supported below the elongated object supporting member 2 to improve the supporting effect. Specifically, the supporting portion can improve the supporting effect and increase the contact area between the elongated object supporting member 2 and the supporting portion, wherein the supporting portions of the first and second supporting frames 111 and 131 are substantially flush to facilitate common supporting and improve stability.

[0087] Optionally, the supporting portion of the second supporting frame 131 is in the shape of a long strip extending in the front-rear direction to increase the supporting surface and improve the supporting stability. The sum of the effective supporting lengths of the first and second supporting frames 111 and 131 matches the shortest length of the elongated object supporting member 2 to facilitate the improvement of supporting effect and structural stability.

[0088] In combination Figure 1 And Figure 12Optionally, the elongated object supporting member 2 comprises a support frame and a plurality of elongated object holders 25, the support frame is retractable along the front-rear direction, the plurality of elongated object holders 25 are connected to the support frame and arranged along the front-rear direction on the support frame, and when the support frame is retracted or extended along the front-rear direction, the plurality of elongated object holders 25 move closer to or farther away from each other along the front-rear direction following the support frame, wherein the positioning spaces of the plurality of elongated object holders 25 form an elongated object channel, and the elongated object 91 can be placed in the elongated object channel. That is, the elongated object 91 can be positioned and supported by the elongated object holders 25, and the plurality of elongated object holders 25 can improve the support and bearing effect on the elongated object 91, and the plurality of elongated object holders 25 are connected to the support frame and can position the elongated object 91 along the extension direction of the support frame to improve the stability of the elongated object 91. When the two adjacent elongated object holders 25 move away from each other when the support frame is extended, and move closer to each other when the support frame is retracted, the elongated object 91 can still be stably positioned and supported by the plurality of elongated object holders 25 when the length of the elongated object 91 between the two ends of the elongated object 91 support frame changes.

[0089] In combination Figure 12 Optionally, the support frame comprises a plurality of telescopic units 21, each telescopic unit 21 comprises a first connecting rod 211 and a second connecting rod 212 which are crossed and hinged, and the plurality of telescopic units 21 are connected in sequence, in the two adjacent telescopic units 21, the two connecting rod ends of one are respectively hinged to the two connecting rod ends of the other, and the rotation surface of the hinge is horizontally arranged. The first connecting rod 211 and the second connecting rod 212 are crossed to form an "X" shape structure, and the hinge is arranged at the crossing to form the telescopic unit 21, thereby improving the balance and structural strength of the support frame, and the telescopic range of the support frame along the front-rear direction is large, the structure is simple, easy to construct, and has high stability.

[0090] In combination Figure 12 The first connecting rod 211 and the second connecting rod 212 can each be arranged in a straight rod shape, and a rhombus structure is formed between each telescopic unit 21 and the adjacent telescopic unit 21, and the plurality of telescopic units 21 formed by the plurality of first connecting rods 211 and the plurality of second connecting rods 212 can collectively form a plurality of rhombus structures. For example, as shown in Figure 9 When the plurality of telescopic units 21 are retracted, the diagonal dimension along the front-rear direction in the rhombus structure formed between the two adjacent telescopic units 21 is reduced, and the diagonal dimension along the left-right direction is increased, and at this time, the intersection points of the two adjacent telescopic units 21 are close to each other, thereby achieving the purpose of shortening the size of the support frame along the front-rear direction; Figure 12When the plurality of telescopic units 21 are stretched, the diagonal dimension in the front-rear direction of the rhombic structure formed between two adjacent telescopic units 21 increases, and the diagonal dimension in the left-right direction decreases, and at this time, the intersection points of the two adjacent telescopic units 21 are away from each other, thereby realizing the purpose of lengthening the size of the support in the front-rear direction. By arranging a plurality of telescopic units 21, the effect of multiple lengthening can be achieved to improve the stretching range of the support, and in addition, each intersection point is formed by the first connecting rod 211 and the second connecting rod 212 hinged to each other, which can effectively improve the support strength of the support.

[0091] The rotating surface of the hinge in the support is horizontally arranged, and the three parts of the second sliding plate 12, the first supporting frame 111 and the second supporting frame 131 effectively support the support from below, which is convenient for arranging a larger supporting surface and improving the stability of the support. When the support is shortened to the shortest, it can be smoothly laid on the first supporting frame 111 and the second supporting frame 131.

[0092] Specifically, in combination with Figure 9 and Figure 11 , the intersection of the first connecting rod 211 and the second connecting rod 212 corresponding to each other is provided with a hinge shaft 23, so as to facilitate the relative rotation of the first connecting rod 211 and the second connecting rod 212, improve the flexibility of the telescopic support, and also improve the connection stability of the first connecting rod 211 and the second connecting rod 212. In addition, the elongated object support 25 is fixedly connected with the hinge shaft 23, and the elongated object support 25 can also be integrally formed with the hinge shaft 23. In other words, the hinge shaft 23 can hinge the first connecting rod 211 and the second connecting rod 212, and also can be used to connect the elongated object support 25, which is conducive to simplifying the structure. Specifically, one end of the hinge shaft 23 is connected with the elongated object support 25, and the hinge shaft 23 can extend downward and be connected to the hinge of the first connecting rod 211 and the second connecting rod 212, thereby realizing the stable hinge between the corresponding first connecting rod 211 and the second connecting rod 212, and improving the stability of the elongated object support 25 supporting and positioning the elongated object.

[0093] In combination with Figure 10 and Figure 11According to one embodiment of the present application, the first connecting rod 211 and the second connecting rod 212 of the telescopic unit 21 located in the middle region of the plurality of telescopic units 21 cross each other, and the crossing position is located at the midpoint of the first connecting rod 211 and the second connecting rod 212. The end and the midpoint of the first connecting rod 211 are provided with mounting holes 201 for being hinged with the second connecting rod 212. The end and the midpoint of the second connecting rod 212 are provided with mounting holes 201 for being hinged with the first connecting rod 211. The ends of the first connecting rod 211 and the second connecting rod 212 of the telescopic unit 21 located at the front and rear ends of the plurality of telescopic units 21 cross each other. The end of the first connecting rod 211 is provided with a mounting hole 201 for being hinged with the second connecting rod 212. The end of the second connecting rod 212 is provided with a mounting hole 201 for being hinged with the first connecting rod 211. The plurality of first connecting rods 211 are parallel to each other, and the plurality of second connecting rods 212 are parallel to each other.

[0094] In combination Figure 12 and Figure 13 Optionally, the positioning groove 250 with an opening is formed on the elongated object carrier 25. The elongated object 91 can be put in or taken out from the opening or gap of the elongated object carrier 25. The positioning grooves 250 of the plurality of elongated object carriers 25 are adapted to be opposite to each other in the front-rear direction and form an elongated object channel. The elongated object 91 can be quickly put into the elongated object channel, and the positioning effect of the elongated object 91 is improved, and the positioning accuracy is improved. The positioning grooves 250 of the plurality of elongated object carriers 25 are opposite to each other in the front-rear direction, so as to facilitate positioning of the elongated object extending in the front-rear direction, and reduce the tangential force on the elongated object.

[0095] Optionally, as shown in Figure 14 and Figure 15 , at least one side of the opening is provided with an elastic part 253 to facilitate putting in or taking out the elongated object, Figure 14 , both sides of the opening are provided with the elastic part 253, Figure 15 , one side of the opening is provided with the elastic part 253. Specifically, when the elastic part 253 is bent inward, the elongated object is put in, and when the elastic part 253 is bent outward, the elongated object is taken out. In addition, the elastic part 253 can also improve the flexibility of the positioning groove 250 to protect the elongated object. Alternatively, the positioning groove 250 is made of a material with a certain flexibility. When installing, the elongated object can be inserted into the positioning groove 250 with a little force, and the elongated object can be taken out from the positioning groove 250 with a little outward pulling.

[0096] In one embodiment, the elastic part 253 can be made of a flexible material such as silica gel or rubber, or the elastic part 253 is a flexible structure such as a metal sheet or a plastic sheet. The operator can press the elongated object into the elongated object carrier 25 by hand, and the operator can pull the elongated object out of the elongated object carrier 25 by hand.

[0097] Optionally, the elongated object carrier 25 comprises a cylindrical portion 251 and a flange portion 252, the cylindrical portion 251 is horizontally arranged, one side of the cylindrical portion 251 is connected to the support, and the other side opposite to the one side has an opening; the flange portion 252 is connected to the opening edge of the cylindrical portion 251, and the flanges of the two sides of the opening of the cylindrical portion 251 are arc-shaped and away from each other in the direction of extending out of the cylindrical portion 251, and the flange portion 252 is arc-shaped with the cylindrical portion 251. Specifically, the cylindrical portion 251 is adapted to accommodate the elongated object 91, and the flange portion 252 is adapted to put into the elongated object 91. Specifically, the axis of the cylindrical portion 251 extends in the front-rear direction to be adapted to position the elongated object 91 in the left-right direction, the cylindrical portion 251 has opposite first and second sides 251a and 251b, the first side 251a of the cylindrical portion 251 is connected to the support, and the opening is arranged at the second side 251b of the cylindrical portion 251. The flange portion 252 is connected to the opening edge of the cylindrical portion 251, and the flange portion 252 of the two sides of the opening of the cylindrical portion 251 is arc-shaped and away from each other in the direction of extending out of the cylindrical portion 251, that is, the opening is open to both sides, which can facilitate the assembly of the elongated object 91, position the elongated object 91 at the top end of the cylindrical portion 251, and make the elongated object 91 enter the positioning groove 250 from the opening downward. The flange portion 252 is arc-shaped, which can improve the structural strength and toughness of the flange portion 252; and the cylindrical portion 251 is arc-shaped, which is beneficial to the sliding of the elongated object 91 out of or into the positioning groove 250, and can protect the elongated object 91. The cylindrical portion 251 and the flange portion 252 can be integrally formed to improve the structural stability.

[0098] It should be noted that the elongated object 91 can be a guide tube, a guide wire, or a guide wire of a treatment stent. For example, the elongated object channel can be used to support a catheter, and the elongated object can be sent into the human body by an interventional control system, and the present application is not limited thereto.

[0099] The control system of the interventional surgical instrument according to the embodiment of the present application can adjust the length of the elongated object extending out of the sheath tube 9 during the movement of the sheath tube 9 in the front-rear direction, and can provide stable support for the elongated object during the adjustment of the extension length of the elongated object relative to the sheath tube 9 through the support of the elongated object support 2. The position relationship between the elongated object support 2 and the patient can also be adjusted, which is beneficial to rapid and accurate positioning and improves the surgical effect.

[0100] In one embodiment (not shown in the figure), the elongated object support 2 is a flexible support tube, and the flexible support tube is provided with an open slit through which a catheter channel inside the flexible support tube passes, the front end of one of the second sliding plate 12 and the driving box is provided with a third connecting part, and the front end of the second supporting frame 131 is provided with a fourth connecting part. The third connecting part is inserted into the catheter channel from the open slit to partially open the open slit, facilitating the entry of the elongated object 91 into the elongated object channel, and the front end of the flexible support tube is fixed to the fourth connecting part. With the movement of the first sliding plate 11 and the second sliding plate 12, the third connecting part slides along the flexible support tube. Among them, the third connecting part can be a protrusion that can penetrate into the catheter channel, or the third connecting part has two positioning pieces that can respectively open the two sides of the open slit. During the pushing of the elongated object 91, the elongated object 91 is supported in the elongated object channel segment between the third connecting part and the fourth connecting part, and the support effect is more stable.

[0101] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0102] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0103] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0104] In the description of the specification, the description using the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the particular feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. Descriptive expressions of the above terms in the specification do not necessarily refer to the same embodiment or example. Also, the particular feature, structure, material or characteristic described can be combined in any suitable manner in one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0105] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A control system for an interventional surgical instrument, characterized in that, include: The driving mechanism includes a fixed plate, a first sliding plate, a second sliding plate, and a driving device. The fixed plate, the first sliding plate, and the second sliding plate are stacked and arranged in layers. The second sliding plate is slidably disposed on the first sliding plate, and the first sliding plate is slidably disposed on the fixed plate. The front end of the fixed plate is provided with a second support frame. An elongated object support member, the elongated object support member being provided with an elongated object channel and an opening or gap for laterally inserting and removing the elongated object along the elongated object channel; As the second and first sliding plates move along the fixed plate, the effective support section of the elongated support member becomes longer or shorter. A drive box, which is fixed to the second slide plate; The effective support section of the elongated support member is positioned between the drive box and the second support frame; The driving device is connected to the fixed plate, the first sliding plate and the second sliding plate respectively to drive the first sliding plate and the second sliding plate to move; the front end of the first sliding plate is connected to a first support frame for supporting the effective support section of the slender object support member.

2. The control system for the interventional surgical instrument according to claim 1, characterized in that, The first support and the second support are located on one side of the drive mechanism, and the drive box is disposed on this side of the drive mechanism via a drive box mounting seat, while the drive device is disposed on the other side of the drive mechanism.

3. The control system for the interventional surgical instrument according to claim 2, characterized in that, The drive box mounting base includes a first mounting plate mounted on the second slide plate, a second mounting plate bent and extending from the edge of the first mounting plate toward the fixed plate, and a third mounting plate bent and extending from the edge of the second mounting plate in a direction away from the drive mechanism, wherein the drive box is fixed to the third mounting plate.

4. The control system for the interventional surgical instrument according to claim 3, characterized in that, Of the third mounting plate and the drive box, one is provided with a positioning protrusion and the other is provided with a positioning groove. The positioning protrusion and the positioning groove cooperate to install the drive box on the third mounting plate. The third mounting plate has a power mechanism for the drive box located below it. The output shaft of the power mechanism extends from the bottom to the top through the third mounting plate. The drive box is mounted on the third mounting plate. The output shaft of the power mechanism is connected to the input shaft of the drive box to provide power to the drive box.

5. The control system for the interventional surgical instrument according to claim 4, characterized in that, The control system also includes an operating handle formed through the housing of the third mounting plate and the power mechanism.

6. The control system for the interventional surgical instrument according to claim 1, characterized in that, The slender support is a telescopic component, with a first connecting frame at the front end and a second connecting frame at the rear end. The first connecting frame is used to connect to the front end of the second support frame; The second connecting frame is connected to the second sliding plate.

7. The control system for the interventional surgical instrument according to claim 1, characterized in that, Both the first support and the second support include a support portion, which is supported below the elongated support member.

8. The control system for the interventional surgical instrument according to claim 7, characterized in that, The support portion of the second support is a long strip extending in the front-to-back direction, and the sum of the effective support lengths of the first support and the second support matches the shortest length of the slender support member.

9. The control system for the interventional surgical instrument according to claim 1, characterized in that, The elongated support member includes: A support frame that is extendable in the front-to-back direction; Multiple elongated object holders are connected to the support and arranged along the front-to-back direction on the support. When the support extends or retracts in the front-to-back direction, the multiple elongated object holders move closer to or further away from each other along the front-to-back direction. The positioning spaces of the multiple elongated object holders constitute the elongated object channel.

10. The control system for the interventional surgical instrument according to claim 9, characterized in that, The support includes: Multiple telescopic units, each telescopic unit including a first link and a second link that cross and are hinged to each other; Multiple telescopic units are connected in sequence. In two adjacent telescopic units, the two ends of the two connecting rods of one unit are respectively hinged to the two ends of the two connecting rods of the other unit, and the hinged rotation surface is set horizontally.

11. The control system for the interventional surgical instrument according to claim 9, characterized in that, The elongated object holder has an open positioning groove, and the positioning grooves of the multiple elongated object holders are adapted to face each other in the front-back direction and form the elongated object channel.

12. The control system for the interventional surgical instrument according to claim 9, characterized in that, The elongated shelf includes: A cylindrical portion, which is horizontally arranged, has one side connected to the bracket and the opposite side having the opening; The flanged portion is connected to the opening edge of the cylindrical portion, and the flanges on both sides of the opening of the cylindrical portion are arc-shaped and move away from each other in a direction extending outward from the cylindrical portion, and the flanged portion transitions to the cylindrical portion by an arc.

13. The control system for the interventional surgical instrument according to claim 1, characterized in that, The slender support member is a flexible support tube, and the flexible support tube has an opening slit for a conduit channel that passes through its interior. The front end of one of the second slide plate and the drive box is provided with a third connecting part, and the front end of the second support frame is provided with a fourth connecting part. The third connecting part is inserted into the conduit channel from the opening slit to partially open the opening slit, so as to facilitate the entry of slender objects into the conduit channel. The front end of the flexible support tube is fixed to the fourth connecting part. As the first slide plate and the second slide plate move, the third connecting part slides along the flexible support tube.

Images