Esophageal stent pusher

Abstract

The present invention relates to the technical field of medical supplies, and specifically discloses an esophageal stent pusher, comprising an outer sheath tube, wherein rotating wheels are rotatably connected to the left and right sides of the outer sheath tube and near the top, the inner tube is movably connected to the inner sheath tube, a connecting groove is provided at the center inside the inner tube, a sliding rod is slidably connected to the inner side of the connecting groove, a clamping block is slidably connected to the left and right sides of the connecting groove and near the bottom, a stent body is sleeved on the surface of the inner tube, a top head is fixedly connected to the bottom of the inner tube, a top block is fixedly connected to the bottom of the sliding rod, a connecting soft rod is slidably connected to the center of the inner tube, a top cover is movably inserted at the top of the outer sheath tube, an outer sheath handle is fixedly connected to the surface of the outer sheath tube near the top, and a rotating plate is rotatably connected to the left side of the top of the outer sheath handle; the present invention can accurately locate the installation position of the esophageal stent and prevent the esophagus from falling off the device during the installation process.

Description

Technical Field

[0001] The invention relates to the technical field of medical supplies, and in particular to an esophageal stent pusher. Background Art

[0002] An esophageal stent is a mesh stent made of nickel-titanium alloy memory metal. A silicone rubber film is sometimes attached to the surface of the stent to close the mesh holes. The main function of the esophageal stent is to prevent proliferative lesions from re-entering the cavity and to prevent the internal space of the lumen from narrowing again. However, since the esophageal stent is a mesh structure with a soft texture, it cannot be directly inserted into the patient's esophagus and needs to be installed with the help of a pusher. However, when installing the esophageal stent, the existing esophageal stent pusher mainly installs it by manual pushing, which makes it difficult to accurately position it, making it easy for the esophageal stent to deviate during installation. At the same time, the existing pusher has no fixed structure for the esophageal stent, so it is easy for the esophageal stent to fall off the pusher before reaching the predetermined installation area during installation. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides an esophageal stent pusher, which has the advantages of being able to accurately position the installation area and prevent the esophageal stent from falling off the device during the installation process. It solves the problem that it is difficult to accurately position the installation position and the esophageal stent is easy to fall off the device during the installation process.

[0004] The esophageal stent pusher of the present invention comprises an outer sheath tube, wherein a connecting plate is fixedly connected to the left top of the outer sheath tube near the front and back sides, and a rotating wheel is rotatably connected to the left and right sides of the outer sheath tube and near the top, and a connecting gear is rotatably connected between the two connecting plates, and the front side of the connecting plate is fixedly connected to a reduction motor, the inner part of the outer sheath tube is movably connected to the inner tube, a connecting groove is opened in the center of the inner tube, a sliding rod is slidably connected to the inner part of the connecting groove, and blocks are slidably connected to the left and right sides of the connecting groove and near the bottom, the surface of the inner tube is sleeved with a bracket body, the bottom of the inner tube is fixedly connected with a top head, the bottom of the sliding rod is fixedly connected with a top block, the central part of the inner tube is slidably connected with a connecting soft rod, and the top of the outer sheath tube is movably inserted with a top cover, the surface of the outer sheath tube is fixedly connected with an outer sheath handle near the top, and the left side of the top of the outer sheath handle is rotatably connected with a rotating plate.

[0005] The esophageal stent pusher of the present invention, wherein the surface of the right side of the rotating wheel passes through the left side of the outer sheath tube and fits with the surface of the inner tube, the surface of the rotating wheel is provided with anti-skid teeth, the surface of the connecting gear is transmission-connected to the rotating wheel through the anti-skid teeth, the back side of the output shaft of the reduction motor passes through the front side of the connecting plate and is fixedly connected to the center of the front side of the connecting gear, this structural arrangement enables the reduction motor to drive the connecting gear to rotate, thereby utilizing the connecting gear to drive the rotating wheel to rotate, and utilizing the anti-skid teeth provided on the rotating wheel to drive the inner tube to move up and down, no manual operation by the staff is required, thereby simplifying the operation difficulty.

[0006] The esophageal stent pusher of the present invention has a spring fixedly connected to one side of the block away from the center of the inner tube, and one end of the spring away from the center of the inner tube is fixedly connected to the inner wall of the inner tube. This structural arrangement enables the spring to drive the block to move inside the inner tube.

[0007] The esophageal stent pusher of the present invention has connecting blocks fixedly connected to the left and right sides of the sliding rod surface, the shape structure of the front side of the connecting block is trapezoidal, and clamping grooves penetrating the inner tube surface are provided on the left and right sides of the connecting groove and near the bottom, and the shape structure of the clamping groove is in line with the shape structure of the clamping block. This structural arrangement enables the sliding rod to use the connecting block to drive the clamping block to move, thereby fixing the position of the stent body using the clamping block.

[0008] The esophageal stent pusher of the present invention, wherein the bottom of the connecting soft rod is fixedly connected to the center of the top of the sliding rod, the top of the connecting soft rod passes through the top of the inner tube, a slot is provided in the center of the top of the top head, the bottom of the top block passes through the bottom of the inner tube and is movably connected to the inside of the slot, and the whole of the top head is made of a rubber block. This structural arrangement enables the size of the top head to be changed through the movable insertion between the top block and the top head, thereby facilitating the top head to pass through the interior of the stent body.

[0009] The esophageal stent pusher of the present invention has limit blocks fixedly connected at the center of the left and right sides of the inner tube and close to the bottom, and the position of the stent body is located between the top head and the limit blocks. This structural arrangement uses the limit blocks and the top head to limit the position of the stent body, thereby preventing the stent body from moving from the device during installation.

[0010] The esophageal stent pusher of the present invention has positioning blocks slidably connected at the left and right sides of the inner tube and near the top, the bottom of the positioning blocks fits with the top of the top cover, and this structural setting limits the moving distance of the inner tube.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The present invention provides a rotating wheel and a connecting gear, cooperates with a connecting plate and a reduction motor, so that during the process of installing the bracket body, the device can drive the connecting gear to rotate through the reduction motor, and use the connecting gear to drive the rotating wheel to rotate, so that the rotating wheel drives the inner tube to move downward, so that the bracket body can be accurately pushed into the patient's esophagus, and at the same time cooperate with the positioning block, so that the fitting effect between the positioning block and the top cover can be utilized to achieve accurate positioning of the bracket body installation to avoid displacement of the installation position, and through the provided clamping block, cooperate with the slide bar and the connecting block provided on the slide bar, the device can use the mutual fitting between the clamping block and the connecting block to clamp and fix the bracket body, and at the same time cooperate with the head and the limit block to fix the position of the bracket body to prevent the bracket body from detaching from the inner tube during installation.

[0013] 2. The present invention provides a sliding rod in cooperation with the top block, so that when the top block is inserted into the top head, the size of the top head can be expanded by the top block, thereby limiting the support body; when the top block is pulled out of the top head, the size of the top head becomes smaller, so that it can be pulled out from the inside of the support body; and through the provided clamping block in cooperation with the spring, when the sliding rod is separated from the connecting block and the clamping block, the clamping block can be retracted into the inside of the inner tube under the action of the spring, thereby returning to the initial position. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0015] Figure 1 It is a front cross-sectional structural schematic diagram of the present invention;

[0016] Figure 2 It is a front view structural schematic diagram of the present invention;

[0017] Figure 3 for Figure 1 Enlarged structural diagram at A in the middle.

[0018] In the figure: 1. outer sheath tube; 2. connecting plate; 21. rotating wheel; 22. connecting gear; 23. reduction motor; 3. inner tube; 31. connecting groove; 32. sliding rod; 33. clamping block; 34. spring; 35. limit block; 4. bracket body; 41. top head; 42. top block; 5. connecting soft rod; 6. top cover; 7. outer sheath handle; 8. rotating plate; 9. positioning block. DETAILED DESCRIPTION

[0019] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these physical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0020] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0021] See also Figure 1-3 The esophageal stent pusher of the present invention comprises an outer sheath tube 1, a connecting plate 2 is fixedly connected at the left top of the outer sheath tube 1 near the front and back sides, a rotating wheel 21 is rotatably connected at the left and right sides of the outer sheath tube 1 and near the top, a connecting gear 22 is rotatably connected between the two connecting plates 2, a reduction motor 23 is fixedly connected at the front of the connecting plate 2, an inner tube 3 is movably connected inside the outer sheath tube 1, a connecting groove 31 is opened in the center of the inner tube 3, a sliding rod 32 is slidably connected inside the connecting groove 31, a card block 33 is slidably connected at the left and right sides of the connecting groove 31 and near the bottom, a stent body 4 is sleeved on the surface of the inner tube 3, a top head 41 is fixedly connected at the bottom of the inner tube 3, a top block 42 is fixedly connected at the bottom of the sliding rod 32, a connecting soft rod 5 is slidably connected at the center of the inner tube 3, a top cover 6 is movably inserted at the top of the outer sheath tube 1, an outer sheath handle 7 is fixedly connected at the surface of the outer sheath tube 1 near the top, and a rotating plate 8 is rotatably connected to the left side of the top of the outer sheath handle 7.

[0022] The surface of the right side of the rotating wheel 21 passes through the left side of the outer sheath tube 1 and fits with the surface of the inner tube 3. The surface of the rotating wheel 21 is provided with anti-skid teeth. The surface of the connecting gear 22 is transmission-connected to the rotating wheel 21 through the anti-skid teeth. The back side of the output shaft of the reduction motor 23 passes through the front side of the connecting plate 2 and is fixedly connected to the center of the front side of the connecting gear 22. This structural arrangement enables the reduction motor 23 to drive the connecting gear 22 to rotate, thereby utilizing the connecting gear 22 to drive the rotating wheel 21 to rotate, and utilizing the anti-skid teeth provided on the rotating wheel 21 to drive the inner tube 3 to move up and down. No manual operation by the staff is required, thereby simplifying the operation difficulty.

[0023] A spring 34 is fixedly connected to one side of the block 33 away from the center of the inner tube 3 , and one end of the spring 34 away from the center of the inner tube 3 is fixedly connected to the inner wall of the inner tube 3 . This structural arrangement enables the spring 34 to drive the block 33 to move inside the inner tube 3 .

[0024] The left and right sides of the surface of the slide rod 32 are fixedly connected with connecting blocks, and the shape structure of the front side of the connecting block is trapezoidal. The left and right sides of the connecting groove 31 and the position near the bottom are provided with card grooves that penetrate the surface of the inner tube 3, and the shape structure of the card groove is consistent with the shape structure of the card block 33. This structural setting enables the slide rod 32 to use the connecting block to drive the card block 33 to move, thereby fixing the position of the bracket body 4 by using the card block 33.

[0025] The bottom of the connecting soft rod 5 is fixedly connected to the center of the top of the sliding rod 32, and the top of the connecting soft rod 5 passes through the top of the inner tube 3. A slot is provided in the center of the top of the plug 41. The bottom of the top block 42 passes through the bottom of the inner tube 3 and is movably connected to the inside of the slot. The plug 41 is made of a rubber block. This structural setting enables the size of the plug 41 to be changed through the movable connection between the top block 42 and the plug 41, thereby facilitating the plug 41 to pass through the interior of the bracket body 4.

[0026] Limiting blocks 35 are fixedly connected at the center of the left and right sides of the inner tube 3 and near the bottom. The position of the bracket body 4 is located between the top head 41 and the limiting blocks 35. This structural arrangement uses the limiting blocks 35 and the top head 41 to limit the position of the bracket body 4 to prevent the bracket body 4 from moving away from the device during installation.

[0027] Positioning blocks 9 are slidably connected at the left and right sides of the inner tube 3 and near the top. The bottom of the positioning blocks 9 fits with the top of the top cover 6. This structural setting limits the moving distance of the inner tube 3.

[0028] When using the present invention, the medical staff first determines the installation distance of the bracket body 4 through X-ray, and then the staff can slide the positioning block 9 so that the distance between the positioning block 9 and the top head 41 corresponds to the installation distance determined by X-ray, and then the staff can push the connecting soft rod 5 downward, so that the sliding rod 32 moves downward inside the inner tube 3 under the action of the connecting soft rod 5. At this time, the connecting block set on the sliding rod 32 fits with the card block 33, and pushes the card block 33 out of the inner tube 3, so that the card block 33 fits with the inner wall of the bracket body 4, thereby clamping and fixing the bracket body 4. At the same time, the top block 42 is inserted into the inside of the top head 41, so that the size of the top head 41 is larger than the size of the inside of the bracket body 4, so that the position of the bracket body 4 is limited by the top head 41 and the limit block 35, so as to prevent the bracket body 4 from detaching from the device during the installation process, and then the staff can extend the bottom of the device into the patient's esophagus and start the reduction motor at the same time. 23, the reduction motor 23 is used to drive the connecting gear 22 to rotate, and the rotating wheel 21 is driven to rotate under the rotation action of the connecting gear 22, and the inner tube 3 is driven to move downward under the action of the anti-slip teeth on the surface of the rotating wheel 21, and the bracket body 4 is extended into the esophagus. When the position of the inner tube 3 moves to the bottom of the positioning block 9 and fits with the top of the top cover 6, the reduction motor 23 can be stopped. At this time, the position of the bracket body 4 has reached the predetermined installation area. Finally, the medical staff only needs to pull the connecting soft rod 5 upward so that the connecting soft rod 5 drives the sliding rod 32 and the top block 42 to move upward. At this time, the top block 42 is separated from the top head 41, and the size of the top head 41 becomes smaller than the size inside the bracket body 4. At the same time, the block 33 returns to the inside of the inner tube 3 under the action of the spring 34 and is separated from the bracket body 4. At this time, the medical staff only needs to pull the device upward to extract the inner tube 3 and the top head 41 from the patient's esophagus and install the bracket body 4 in the patient's esophagus.

[0029] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An esophageal stent pusher, comprising an outer sheath (1), characterized in that: The outer sheath tube (1) is fixedly connected to a connecting plate (2) at a position near the front and back of the left top of the outer sheath tube (1), and a rotating wheel (21) is rotatably connected to the left and right sides of the outer sheath tube (1) and at a position near the top, and a connecting gear (22) is rotatably connected between the two connecting plates (2), and a reduction motor (23) is fixedly connected to the front of the connecting plate (2), and the inner tube (3) is movably connected to the inner part of the outer sheath tube (1), and a connecting groove (31) is provided at the center of the inner part of the inner tube (3), and a sliding rod (32) is slidably connected to the inner part of the connecting groove (31), and the connecting groove (31) There are blocks (33) slidably connected on the left and right sides and near the bottom, the surface of the inner tube (3) is sleeved with a bracket body (4), the bottom of the inner tube (3) is fixedly connected with a top head (41), the bottom of the slide rod (32) is fixedly connected with a top block (42), the center of the inner tube (3) is slidably connected with a connecting soft rod (5), the top of the outer sheath tube (1) is movably plugged with a top cover (6), the surface of the outer sheath tube (1) is fixedly connected with an outer sheath handle (7) near the top, and the left side of the top of the outer sheath handle (7) is rotatably connected with a rotating plate (8); The surface of the right side of the rotating wheel (21) penetrates the left side of the outer sheath tube (1) and fits with the surface of the inner tube (3); the surface of the rotating wheel (21) is provided with anti-skid teeth; the surface of the connecting gear (22) is drivingly connected to the rotating wheel (21) via the anti-skid teeth; the back side of the output shaft of the reduction motor (23) penetrates the front side of the connecting plate (2) and is fixedly connected to the center of the front side of the connecting gear (22); The left and right sides of the surface of the slide bar (32) are fixedly connected to a connecting block, the front side of the connecting block is in a trapezoidal shape, and the left and right sides of the connecting groove (31) and near the bottom are provided with a clamping groove penetrating the surface of the inner tube (3), and the shape and structure of the clamping groove fits the shape and structure of the clamping block (33); The bottom of the connecting rod (5) is fixedly connected to the center of the top of the sliding rod (32), the top of the connecting rod (5) passes through the top of the inner tube (3), a slot is provided in the center of the top of the top head (41), and the bottom of the top block (42) passes through the bottom of the inner tube (3) and is movably connected to the inside of the slot.

2. The esophageal stent pusher according to claim 1, characterized in that: A spring (34) is fixedly connected to one side of the clamping block (33) away from the center of the inner tube (3); and one end of the spring (34) away from the center of the inner tube (3) is fixedly connected to the inner wall of the inner tube (3).

3. The esophageal stent pusher according to claim 1, characterized in that: The inner tube (3) is fixedly connected to limit blocks (35) at the center of the left and right sides and close to the bottom, and the support body (4) is located between the top head (41) and the limit blocks (35).

4. The esophageal stent pusher according to claim 1, characterized in that: Positioning blocks (9) are slidably connected at positions near the top and on the left and right sides of the inner tube (3), and the bottom of the positioning block (9) fits with the top of the top cover (6).

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