A catheter disengagement prevention mechanism for a vascular intervention robot

Abstract

The application provides a catheter escape prevention mechanism of a vascular interventional robot, which comprises at least two sleeves, each of which is sleeved together layer by layer, the innermost and outermost sleeves are respectively marked as the first and last end sleeves, the last end sleeve is fixed on a consumable box, the first end sleeve is assembled on a support, the support is controlled to move relative to the consumable box to drive the sleeves to move except the last end sleeve, each of the sleeves except the first end sleeve is provided with a spiral slide, each of the sleeves except the last end sleeve is provided with a sliding part, the cooperation of the slide and the sliding part can guide and limit the movement of the sleeve in the inner layer of the two adjacent sleeves, each sleeve is provided with an opening at a preset position, when all the sleeves are in the retracted state, the openings on the sleeves correspond to each other, so that the catheter can be placed into the first end sleeve, and when the relevant sleeve is in the extended state, the opening is misaligned to prevent the catheter from escaping. The catheter escape prevention mechanism has the advantages of simple structure and effective prevention of catheter escape.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical equipment, in particular to a catheter anti-extrusion mechanism of a vascular interventional robot. BACKGROUND

[0002] Vascular interventional surgery is to guide a guide wire, a balloon stent to a lesion site in a human body through a catheter along a blood vessel, and then perform surgery. The vascular interventional robot is an instrument that can perform surgery remotely through an image in order to prevent doctors from being exposed to an X-ray environment for a long time. A catheter anti-extrusion mechanism needs to be provided in the vascular interventional robot in order to guide the catheter and prevent the catheter from extruding. SUMMARY

[0003] In order to solve the problems in the prior art, the present application provides a catheter anti-extrusion mechanism of a vascular interventional robot, which is simple in structure, easy to operate, and can effectively prevent the catheter from extruding.

[0004] In order to achieve the above-mentioned purpose, the present application provides a catheter anti-extrusion mechanism of a vascular interventional robot, which comprises at least two sleeve pipes, each sleeve pipe is sleeved together layer by layer, the innermost sleeve pipe is marked as a first end sleeve pipe, and the outermost sleeve pipe is marked as a last end sleeve pipe, the last end sleeve pipe is used for being fixed on a consumable box of the vascular interventional robot, the first end sleeve pipe is used for being assembled on a bracket, the bracket is controlled to be movable relative to the consumable box to drive the sleeve pipes except the last end sleeve pipe to move, each sleeve pipe except the first end sleeve pipe is provided with a slide way, the slide way is in a spiral shape, and the first end and the last end of the slide way are in a closed state, each sleeve pipe except the last end sleeve pipe is provided with a sliding part used in cooperation with the slide way, through cooperation of the slide way and the sliding part, movement of the sleeve pipe in the inner layer of the adjacent two sleeve pipes can be guided and limited, so that the adjacent two sleeve pipes will not be separated, and each sleeve pipe is provided with an opening at a preset position, when all the sleeve pipes are in a retracted state, the openings on the sleeve pipes correspond to each other, so that the catheter can be placed in the first end sleeve pipe, and when the relevant sleeve pipe is in an extended state, the opening of the relevant sleeve pipe will be misaligned to prevent the catheter from extruding.

[0005] In some embodiments, an elastic buckle structure is provided on the first end sleeve pipe to prevent the catheter from extruding from the first end sleeve pipe.

[0006] In some embodiments, the directions of rotation of the slide ways on each sleeve pipe are the same.

[0007] In some embodiments, the directions of rotation of the slide ways on the adjacent two sleeve pipes are opposite.

[0008] The beneficial effect of this solution is that the catheter dislodgement prevention mechanism of the vascular intervention robot, by setting at least two cannulas and using the guidance of a spiral slide, can achieve the action of extending and rotating the cannulas simultaneously. When each cannulas is in the extended state, the openings of each cannulas will be misaligned, so that the catheter is blocked around and effectively prevents the catheter from dislodgement. The catheter dislodgement prevention mechanism of the vascular intervention robot involved in this application also has the advantages of simple structure and easy operation. Attached Figure Description

[0009] Fig. 1 A schematic diagram of the anti-catheter dislodgement mechanism of the vascular intervention robot in the embodiment is shown, wherein each cannula is in the extended state.

[0010] Fig. 2 A schematic diagram of the anti-catheter dislodgement mechanism of the vascular intervention robot in the embodiment is shown, wherein each cannula is in the retracted state.

[0011] Fig. 3 A schematic diagram of the structure of the remaining sleeves in Embodiment 1, excluding the first and last sleeves, is shown.

[0012] Fig. 4 The diagram shows the structure of two adjacent sleeves in the remaining sleeves excluding the first and last sleeves in Embodiment 2.

[0013] Fig. 5 (a) shows a schematic diagram of the structure of the first end sleeve in the embodiment, and (b) is an enlarged view of the elastic snap-fit ​​structure in the first end sleeve.

[0014] Fig. 6 A schematic diagram of the anti-catheter dislodgement mechanism of the vascular intervention robot in the embodiment is shown in use.

[0015] Reference numerals: 1-Anti-catheter dislodgement mechanism, 101-Sleeve, 101A-Head sleeve, 101B-End sleeve, 1011-Slide, 1012-Pin, 1013-Opening, 1014-First connector, 1015-Second connector, 1016-Elastic snap-fit ​​structure, 2-Consumable box, 3-Support, 4-Connecting part, 5-Catheter. Detailed Implementation

[0016] The specific embodiments of this application will be further described below with reference to the accompanying drawings.

[0017] In the description of this application, it should be understood that the terms "first," "second," etc., are used to distinguish similar objects, rather than to describe or indicate a specific order or sequence. The terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0018] like Figs. 1-6 As shown, the catheter dislodgement prevention mechanism 1 of the vascular interventional robot involved in this application includes at least two sleeves 101, which are connected layer by layer. The innermost sleeve is designated as the first sleeve 101A, and the outermost sleeve is designated as the last sleeve 101B. The last sleeve 101B is used to fix the consumable box 2 of the vascular interventional robot, and the first sleeve 101A is used to assemble on the support 3. The support 3 is controllable and can move relative to the consumable box 2 to drive the sleeves 101 except for the last sleeve 101B to move. Specifically, the last sleeve 101B is provided with a first connector 1014, which is connected to the consumable box 2. The first sleeve 101A is provided with a second connector 1015, which is connected to the support 3. The support 3 is connected to the consumable box 2 via a connecting part 4. The support 3 can be pulled manually or driven by a motor.

[0019] Except for the first end sleeve 101A, all other sleeves 101 are provided with slides 1011. The slides 1011 are spiral-shaped and both ends of the slides 1011 are closed. Except for the last end sleeve 101B, all other sleeves 101 are provided with sliding components that cooperate with the slides 1011 (in two adjacent sleeves, the sliding component on the inner sleeve cooperates with the slide 1011 on the outer sleeve). In this embodiment, the sliding component is a pin 1012. When the support 3 is moved in a controlled manner, according to the moving distance of the support 3, the relevant sleeves 101 other than the last end sleeve 101B will slide relative to their outer sleeves. Through the cooperation of the slides 1011 and the sliding components, the movement of the inner sleeve in two adjacent sleeves can be guided and limited, so that the two adjacent sleeves 101 will not detach. Each sleeve 101 has an opening 1013 at a preset position. The opening 1013 extends through the sleeve 101 along the axial direction of the sleeve. When all sleeves 101 are in the retracted state, the openings 1013 on each sleeve 101 correspond to each other, and the width of each opening 1013 is greater than the outer diameter of the conduit 5, so that the conduit 5 can be inserted into the first end sleeve 101A. When the relevant sleeve 101 is in the extended state, the openings 1013 of the relevant sleeve will be misaligned, resulting in the conduit 5 being blocked around it to prevent the conduit 5 from falling out.

[0020] Example 1

[0021] The slides 1011 on each sleeve 101 have the same rotation direction and the rotation angle does not exceed 180 degrees, so as to prevent the slides 1011 on the same sleeve from communicating with the opening 1013; the first end sleeve 101A is rotatably connected to the bracket 3 through the second connector 1015.

[0022] To improve the anti-detachment effect, an elastic snap-fit ​​structure 1016 is provided on the first end sleeve 101A to prevent the catheter 5 from detaching from the first end sleeve 101A. Specifically, grooves can be provided on the inner walls on both sides of the opening 1013 in the first end sleeve 101A to reduce the thickness of the inner wall and allow deformation. In this case, the width of the opening 1013 of the first end sleeve 101A is slightly smaller than the outer diameter of the catheter 5, making it easier for the catheter 5 to be inserted into the first end sleeve 101A under external force and less likely to detach from the opening 1013 of the first end sleeve 101A without external force. Of course, the elastic snap-fit ​​structure 1016 can also be implemented in other forms, as long as the corresponding function is achieved.

[0023] In practical use, when all sleeves 101 are in the retracted state, the conduit 5 is inserted into the first sleeve 101A through each opening 1013. Then, when the support 3 is moved in a controlled manner, according to the moving distance of the support 3, the relevant sleeves 101, except for the end sleeve 101B, will rotate and slide out relative to their outer sleeves, and the rotation direction of each sleeve is the same. Through the cooperation of the slide 1011 and the sliding component, the movement of the inner sleeve in two adjacent sleeves can be guided and limited, so that the two adjacent sleeves 101 will not detach. When the sleeve 101 is in the extended state, the openings 1013 of each sleeve will be misaligned, resulting in the conduit 5 being blocked around it to prevent the conduit 5 from falling out.

[0024] Example 2

[0025] The slides 1011 on two adjacent sleeves 101 rotate in opposite directions, and the rotation angle does not exceed 180 degrees, to prevent the slides 1011 on the same sleeve from communicating with the opening 1013; when the sleeve 101 has an even number of sections, the first end sleeve 101A is rotatably connected to the bracket 3 through the second connector 1015; when the sleeve 101 has an odd number of sections, the first end sleeve 101A is fixedly connected to the bracket 3 through the second connector 1015.

[0026] To improve the anti-detachment effect, an elastic snap-fit ​​structure 1016 is provided on the first end sleeve 101A to prevent the catheter 5 from detaching from the first end sleeve 101A. Specifically, grooves can be provided on the inner walls on both sides of the opening 1013 in the first end sleeve 101A to reduce the thickness of the inner wall and allow deformation. In this case, the width of the opening 1013 of the first end sleeve 101A is slightly smaller than the outer diameter of the catheter 5, making it easier for the catheter 5 to be inserted into the first end sleeve 101A under external force and less likely to detach from the opening 1013 of the first end sleeve 101A without external force. Of course, the elastic snap-fit ​​structure 1016 can also be implemented in other forms, as long as the corresponding function is achieved.

[0027] In practical use, when all sleeves 101 are in the retracted state, the catheter 5 is inserted into the first sleeve 101A through each opening 1013. Then, when the support 3 is moved in a controlled manner, according to the moving distance of the support 3, the relevant sleeves 101 other than the end sleeve 101B and the first sleeve 101A will slide out relative to their outer sleeves by rotating. The rotation directions of two adjacent sleeves are opposite. When each sleeve 101 is in the extended state, the openings 1013 of each sleeve will be misaligned, resulting in the catheter 5 being blocked around it to prevent the catheter 5 from falling out.

[0028] The catheter dislodgement prevention mechanism of the vascular interventional robot involved in this application, by setting at least two cannulas and using a spiral guide, enables the cannulas to extend and rotate simultaneously. When each cannulas is in the extended state, the openings of each cannulas are misaligned, providing protection around the catheter and effectively preventing dislodgement. The catheter dislodgement prevention mechanism of the vascular interventional robot involved in this application also has the advantages of simple structure and ease of operation.

[0029] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A catheter dislodgement prevention mechanism for a vascular interventional robot, characterized in that: The device comprises at least two cannulas, each nested together in a layered fashion. The innermost cannulas are designated as the head cannulas, and the outermost cannulas as the tail cannulas. The tail cannulas are fixed to the consumables container of the vascular interventional robot. The head cannulas are mounted on a stent, which is controllably movable relative to the consumables container to move the cannulas other than the tail cannulas. Except for the head cannulas, all other cannulas are equipped with spiral-shaped tracks, both ends of which are closed. Except for the end sleeve, the remaining sleeves are equipped with sliding components that cooperate with the slide rails. Through the cooperation of the slide rails and sliding components, the movement of the inner sleeve in two adjacent sleeves can be guided and limited, so that the two adjacent sleeves will not detach. Each sleeve has an opening at a preset position. When all sleeves are in the retracted state, the openings on each sleeve correspond to each other, so that the catheter can be inserted into the first end sleeve. When the relevant sleeves are in the extended state, the openings of the relevant sleeves will be misaligned to prevent the catheter from falling out.

2. The catheter dislodgement prevention mechanism of the vascular interventional robot according to claim 1, characterized in that: An elastic snap-fit ​​structure is provided on the first end sleeve to prevent the catheter from coming out of the first end sleeve.

3. The catheter dislodgement prevention mechanism of the vascular interventional robot according to claim 1 or 2, characterized in that: The slides on each sleeve rotate in the same direction.

4. The catheter dislodgement prevention mechanism of the vascular interventional robot according to claim 1 or 2, characterized in that: The slides on adjacent sleeves rotate in opposite directions.

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