Endoscope weight reduction support

Abstract

The invention discloses an endoscope weight reduction support which comprises an upper reducing supporting body, a lower reducing supporting body, a connecting pipe and a membrane pipe. The upper reducing support body and the lower reducing support body are connected through a connecting pipe; and the membrane tube is fixed on the lower reducing support body. The degradable stent is prepared from a poly (p-dioxanone) material, and the degradable stent does not need to be taken out and can be automatically degraded and discharged, so that the step of taking out the stent is omitted, the cost and the risk are reduced, and the comfort of a patient is improved. The fixing effect is more stable, stent displacement is avoided, and stimulation of stent barbs to duodenum bulbar mucosa is avoided; the degradable stent is prepared from a poly (p-dioxanone) material, and the degradable stent does not need to be taken out and can be automatically degraded and discharged, so that the step of taking out the stent is omitted, the cost and the risk are reduced, and the comfort of a patient is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an endoscope weight-reducing bracket. Background Art

[0002] In recent years, obesity and obesity-related diseases have gradually become a global health problem. The complications caused by obesity bring heavy economic burdens and health damage to society and patients. At present, the treatments for obesity mainly include: lifestyle adjustment, drug therapy and bariatric surgery, but generally speaking, the effects of the first two are not ideal, while bariatric surgery is relatively effective, but it has potential serious complications.

[0003] The Duodenal-Jejunal Bypass Sleeve simulates the Roux-en-Y surgery by placing a sleeve in the duodenum and upper jejunum, thereby isolating food from the intestines, affecting food absorption and achieving a good weight loss effect. However, the sleeve is fixed by a stent, and the upper edge of the stent is fixed to the duodenal bulb with barbs. This fixation method is not only unstable and prone to displacement, but also the barbs constantly rub against the intestinal mucosa, which can cause abdominal pain, nausea and other discomforts in patients. Summary of the invention

[0004] In order to solve the above problems, the present invention provides an endoscopic weight-reducing stent, which has a more stable fixing effect, avoids stent displacement, and avoids stimulation of the duodenal bulb mucosa by the stent barbs.

[0005] The technical solution of the present invention is: an endoscope weight-reducing bracket, comprising an upper variable-diameter support body, a lower variable-diameter support body, a connecting tube and a membrane tube; the upper variable-diameter support body and the lower variable-diameter support body are connected by a connecting tube; the membrane tube is fixed on the lower variable-diameter support body.

[0006] Furthermore, the endoscopic weight-reducing stent is made of degradable polydioxanone.

[0007] The sleeve-shaped stents currently available on the market that place weight loss stents in the duodenum and upper jejunum are non-degradable. For obese patients undergoing gastroscopy, implantation and retrieval of weight loss stents must be performed under intubation anesthesia, which is costly, causes poor patient comfort, and has certain anesthesia risks.

[0008] The present invention adopts polydioxanone material to prepare the degradable stent. The degradable stent does not need to be taken out and can be degraded and discharged by itself, thus eliminating the step of taking out the stent, reducing costs and risks, and improving patient comfort.

[0009] Furthermore, the upper variable diameter support body and the lower variable diameter support body have the same structure, including a movable ring, a fixed ring and a support arm; a plurality of support arms are arranged between the movable ring and the fixed ring; the fixed ring is fixedly arranged at the end of the connecting tube; a driving assembly for controlling the movement of the movable ring is arranged on the connecting tube; a limiting assembly for limiting the driving assembly is also arranged on the connecting tube.

[0010] Furthermore, the driving assembly includes a pull rod fixedly connected to the movable ring; a sliding body that drives the pull rod is provided on the connecting tube; one end of the pull rod is fixed on the sliding body, and the other end is fixed on the movable ring; the sliding body includes an outer semicircular movable body 1 and an inner semicircular movable body 2 and a connecting block connecting the semicircular movable body 1 and the semicircular movable body 2; a strip hole is provided on the side wall of the connecting tube; the connecting block passes through the strip hole, and its two ends are respectively fixedly connected to the semicircular movable body 1 and the semicircular movable body 2, and the connecting block moves up and down in the strip hole.

[0011] Furthermore, the sliding bodies of the driving assemblies of the upper variable diameter support body and the lower variable diameter support body are connected through a linkage component; the linkage component includes shaft one, shaft two, traction rope one and traction rope two; shaft one and shaft two are respectively arranged at both ends of the connecting pipe; both ends of the traction rope one and the traction rope two are respectively connected to the semicircular movable body two of the upper variable diameter support body and the lower variable diameter support body; the traction rope one passes over the top of shaft one; the traction rope two passes over the bottom of shaft two.

[0012] Furthermore, the limiting assembly includes a limiting frame arranged at the outer end of the connecting tube; a cavity is arranged in the limiting frame; the cavity is divided into a left cavity and a right cavity by a partition, and limiting pressure plates are symmetrically arranged on both sides of the limiting frame; the two limiting pressure plates are respectively limited in the left cavity and the right cavity, and the limiting pressure plates slide left and right in the left cavity or the right cavity; through holes for the limiting pressure plates to extend out are arranged on the outer sides of the left cavity and the right cavity; the limiting pressure plates are connected to the partition through a reset spring; an inclined plane 1 is arranged on the upper surface of the limiting pressure plate, and an inclined plane 2 matching the inclined plane 1 is arranged in the semicircular movable body 1 in the lower variable diameter support body and the upper variable diameter support body that contacts the limiting pressure plate.

[0013] Furthermore, a protective film sleeve is provided between the movable ring and the fixed ring; the protective film sleeve is located on the outer periphery of the support arm.

[0014] Furthermore, the length of the membrane tube is 60-100 cm.

[0015] Furthermore, the length of the connecting tube is 1.5-2.5 cm.

[0016] A method for using an endoscopic weight-reducing stent of the present invention comprises the following steps:

[0017] (1) placing the endoscopic weight-reducing stent into the digestive tract, with the connecting tube crossing the pylorus, and the upper reducer support body and the lower reducer support body being located on both sides of the pylorus respectively; the upper reducer support body being located in the gastric antrum, the lower reducer support body being located in the duodenum, and the membrane tube being located in the duodenum and the small intestine below;

[0018] (2) controlling the upper variable diameter support body and the lower variable diameter support body through the driving assembly so that the outer diameters of the upper variable diameter support body and the lower variable diameter support body increase, thereby limiting the connection tube in the pylorus;

[0019] (3) After eating, food forms chyme in the stomach. As the stomach moves, food passes through the upper variable diameter support body and enters the connecting tube, the lower variable diameter support body and the membrane tube in sequence, and finally enters the intestine.

[0020] The beneficial effects of the present invention are:

[0021] 1) The present invention provides an upper variable diameter support body and a lower variable diameter support body. After the bracket is installed, the outer diameters of the upper variable diameter support body and the lower variable diameter support body are changed to increase the outer diameters of the upper variable diameter support body and the lower variable diameter support body, thereby achieving a fixing effect and preventing the bracket from shifting.

[0022] 2) The fixation effect of the present invention is more stable, and the displacement of the stent and the stimulation of the duodenal bulb mucosa by the stent barbs are avoided, resulting in fewer complications.

[0024] 3) The present invention uses polydioxanone material to prepare a degradable stent. The degradable stent does not need to be removed and can be degraded and discharged by itself, thereby eliminating the step of removing the stent, reducing costs and risks, and improving patient comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 This is a schematic diagram of the expanded state structure of Example 1.

[0027] Figure 2 This is a schematic diagram of the contraction state of Example 1.

[0028] Figure 3 A schematic diagram of the drive components.

[0029] Figure 4 Schematic diagram of the limit assembly.

[0030] Figure 5 This is a schematic diagram of the structure of Example 2. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be clearly and completely described below through specific implementation methods.

[0032] Example 1

[0033] refer to Figure 1-Figure 4 , is an endoscope weight-reducing stent of the present invention, comprising an upper variable diameter support body 1, a lower variable diameter support body 2, a connecting tube 3 and a membrane tube 4. The connecting tube 3 is located at the pylorus and has a length of 1.5-2.5 cm, and the membrane tube 4 is located in the duodenum and small intestine. The endoscope weight-reducing stent is made of degradable polydioxanone.

[0034] The present invention adopts polydioxanone material to prepare the degradable stent. The degradable stent does not need to be taken out and can be degraded and discharged by itself, thus eliminating the step of taking out the stent, reducing costs and risks, and improving patient comfort.

[0035] The upper variable diameter support body 1 and the lower variable diameter support body 2 of this embodiment are arranged at both ends of the connecting tube 3; after the upper variable diameter support body 1 and the lower variable diameter support body 2 change their diameters, they form an I-shaped structure with the connecting tube 3, which can fix and limit the connecting tube 3. The membrane tube 4 of this embodiment is fixed on the lower variable diameter support body 2, and the length of the membrane tube is 60-100 cm.

[0036] In this embodiment, the upper variable diameter support body 1 and the lower variable diameter support body 2 have the same structure, including a movable ring 11, a fixed ring 12 and a support arm 13; a plurality of support arms 13 are arranged between the movable ring 11 and the fixed ring 12; the fixed ring 12 is fixedly arranged at the end of the connecting tube 3; a driving component for controlling the movement of the movable ring 11 is arranged on the connecting tube 3; a limiting component for limiting the driving component is also arranged on the connecting tube 3.

[0037] The support arm 13 in this embodiment is an elastic guide wire slightly bent outward. In this embodiment, the driving component drives the movable ring 11 to move toward the fixed ring 12 until it is close to the fixed ring. At this time, several elastic guide wires between the movable ring 11 and the fixed ring 12 expand outward to form a limiting support body.

[0038] The driving assembly of this embodiment includes a pull rod 141 fixedly connected to the movable ring 11; a slide 142 driving the pull rod is provided on the connecting pipe 3; one end of the pull rod 141 is fixed to the slide 142, and the other end is fixed to the movable ring 11. This embodiment controls the movable ring to move by the slide.

[0039] The sliding body 142 of this embodiment includes an outer semicircular movable body 1 51, an inner semicircular movable body 2 52, and a connecting block 53 connecting the semicircular movable body 1 and the semicircular movable body 2; the side wall of the connecting pipe 3 is provided with a strip hole; the connecting block 53 passes through the strip hole, and the two ends are respectively fixedly connected to the semicircular movable body 1 51 and the semicircular movable body 2 52, and the connecting block 53 moves up and down in the strip hole. The pull rod 141 is fixedly connected to the semicircular movable body 2 52.

[0040] Preferably, the slide 142 of the driving assembly of the upper variable diameter support body 1 and the lower variable diameter support body 2 is connected through a linkage component. In this embodiment, through the setting of the linkage component, it is only necessary to control the movement of the slides in the upper variable diameter support body 1 and the lower variable diameter support body 2, and the other variable diameter support body will also move synchronously.

[0041] The linkage components of this embodiment include shaft one 61, shaft two 62, traction rope one 63 and traction rope two 64; shaft one 61 and shaft two 62 are respectively provided at both ends of the connecting tube 3; both ends of the traction rope one 63 and the traction rope two 64 are respectively connected to the semicircular movable body two 52 of the upper variable diameter support body 1 and the lower variable diameter support body 2; the traction rope one 63 passes over the top of shaft one 61; the traction rope two 64 passes over the bottom of shaft two 62.

[0042] When the sliding body of the lower variable diameter support body 2 is pushed, under the action of the traction rope 1 63 and the traction rope 2 64 , the sliding body of the upper variable diameter support body 1 moves downward.

[0043] The limiting assembly of this embodiment includes a limiting frame 31 arranged at the outer end of the connecting pipe 3; a cavity 32 is arranged in the limiting frame 31; the cavity is divided into a left cavity and a right cavity by a partition, and limiting pressure plates 32 are symmetrically arranged on both sides of the limiting frame 31; the two limiting pressure plates 32 are respectively limited in the left cavity and the right cavity, and the limiting pressure plates 32 slide left and right in the left cavity or the right cavity; through holes are arranged on the outside of the left cavity and the right cavity for the limiting pressure plates 32 to extend out; the limiting pressure plates 32 are connected to the partition through a reset spring 33.

[0044] In this embodiment, the upper surface of the limiting pressure plate 32 is provided with a first inclined surface, and the semicircular movable body 1 51 in the lower variable diameter support body 2 and the upper variable diameter support body 1 that contacts the limiting pressure plate 32 is provided with a second inclined surface matching the first inclined surface.

[0045] In the initial state, the limiting pressure plate 32 on one side of the limiting assembly is located above the semicircular movable body 1 51 of the lower variable diameter support body 2 to limit the semicircular movable body 1 51;

[0046] When the endoscopic weight-loss stent is placed in the digestive tract and the connecting tube crosses the pylorus, the limiting pressure plate 32 is pushed. The limiting pressure plate 32 releases the restriction on the semicircular movable body 51 of the lower variable-diameter support body 2, and controls the semicircular movable body 51 of the lower variable-diameter support body 2 to move upward until the semicircular movable body 51 of the upper variable-diameter support body 1 moves down to a position close to the limiting assembly. The semicircular movable body 51 of the upper variable-diameter support body 1 continues to move downward, and the second slope contacts the first slope. The second slope pushes the limiting pressure plate 32 to move horizontally. After the limiting pressure plate 32 avoids the position of the semicircular movable body 51 of the upper variable-diameter support body 1 and continues to move downward, under the action of the reset spring, the limiting pressure plate 32 is reset to limit the semicircular movable body 51 of the upper variable-diameter support body 1.

[0047] Preferably, a protective film sleeve is further provided between the movable ring 11 and the fixed ring 12 ; the protective film sleeve is located on the outer periphery of the support arm 13 .

[0048] In this embodiment, the pull rod 141 may be an elastic guide wire.

[0049] Example 2

[0050] The invention discloses an endoscope weight-reducing stent, comprising an upper variable diameter support body 1, a lower variable diameter support body 2, a connecting tube 3 and a membrane tube 4. The connecting tube 3 is located at the pylorus and has a length of 1.5-2.5 cm, and the membrane tube 4 is located in the duodenum and small intestine.

[0051] The upper variable diameter support body 1 and the lower variable diameter support body 2 of this embodiment are arranged at both ends of the connecting tube 3; after the upper variable diameter support body 1 and the lower variable diameter support body 2 change their diameters, they form an I-shaped structure with the connecting tube 3, which can fix and limit the connecting tube 3. The membrane tube 4 of this embodiment is fixed on the lower variable diameter support body 2, and the length of the membrane tube is 60-100 cm.

[0052] In this embodiment, the upper variable diameter support body 1 and the lower variable diameter support body 2 have the same structure, including a movable ring 11, a fixed ring 12 and a support arm 13; a plurality of support arms 13 are arranged between the movable ring 11 and the fixed ring 12; the fixed ring 12 is fixedly arranged at the end of the connecting tube 3; a driving component for controlling the movement of the movable ring 11 is arranged on the connecting tube 3; a limiting component for limiting the driving component is also arranged on the connecting tube 3.

[0053] like Figure 5 As shown, the support arm 13 in this embodiment includes a connecting rod 1 and a connecting rod 2; one end of the connecting rod 1 and one end of the connecting rod 2 are rotatably connected via a rotating shaft, and the other end of the connecting rod 1 is rotatably connected to the movable ring via a rotating shaft; the other end of the connecting rod 2 is rotatably connected to the fixed ring via a rotating shaft.

[0054] In this embodiment, in the original state, connecting rod 1 and connecting rod 2 are vertical; when the driving assembly drives the movable ring 11 to move toward the fixed ring 12 until it is close to the fixed ring, at this time, connecting rod 1 and connecting rod 2 between the movable ring 11 and the fixed ring 12 are tilted outward, close to horizontal, to form a limiting support body.

[0055] In this embodiment, the driving assembly and the limiting assembly have the same structure as in the embodiment.

[0056] The pull rod in this embodiment may be an elastic guide wire.

[0057] The pull rod in this embodiment can be made of hard silicone.

[0058] Example 3

[0059] The method for using the endoscopic weight-reducing stent in this embodiment includes the following steps:

[0060] (1) placing the endoscopic weight-reducing stent into the digestive tract, with the connecting tube crossing the pylorus, and the upper reducer support body and the lower reducer support body being located on both sides of the pylorus respectively; the upper reducer support body being located in the gastric antrum, the lower reducer support body being located in the duodenum, and the membrane tube being located in the duodenum and the small intestine below;

[0061] (2) controlling the upper variable diameter support body and the lower variable diameter support body through the driving assembly so that the outer diameters of the upper variable diameter support body and the lower variable diameter support body increase, thereby limiting the connection tube in the pylorus;

[0062] (3) After eating, food forms chyme in the stomach. As the stomach moves, food passes through the upper variable diameter support body and enters the connecting tube, the lower variable diameter support body and the membrane tube in sequence, and finally enters the intestine.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions should also be deemed to fall within the protection scope of the technical solution of the present invention.

Claims

1. An endoscope weight-reducing stent, characterized in that: It comprises an upper variable diameter support body (1), a lower variable diameter support body (2), a connecting pipe (3) and a membrane tube (4); the upper variable diameter support body (1) and the lower variable diameter support body (2) are connected via the connecting pipe (3); and the membrane tube (4) is fixed on the lower variable diameter support body (2).

2. The endoscope weight-reducing bracket according to claim 1, characterized in that: The endoscopic weight-reducing stent is prepared by using degradable polydioxanone.

3. The endoscope weight-reducing bracket according to claim 1, characterized in that: The upper variable diameter support body (1) and the lower variable diameter support body (2) have the same structure, including a movable ring (11), a fixed ring (12) and a support arm (13); a plurality of support arms (13) are arranged between the movable ring (11) and the fixed ring (12); the fixed ring (12) is fixedly arranged at the end of the connecting tube (3); a driving component for controlling the movement of the movable ring (11) is arranged on the connecting tube (3); and a limiting component for limiting the driving component is also arranged on the connecting tube (3).

4. The endoscope weight-reducing bracket according to claim 3, characterized in that: The driving assembly comprises a pull rod (141) fixedly connected to the movable ring (11); a sliding body (142) for driving the pull rod is arranged on the connecting tube (3); one end of the pull rod (141) is fixed on the sliding body (142), and the other end is fixed on the movable ring (11); the sliding body (142) comprises an outer semicircular movable body 1 (51) and an inner semicircular movable body 2 (52) and a connecting block (53) connecting the semicircular movable body 1 and the semicircular movable body 2; a strip hole is arranged on the side wall of the connecting tube (3); the connecting block (53) passes through the strip hole, and its two ends are respectively fixedly connected to the semicircular movable body 1 (51) and the semicircular movable body 2 (52), and the connecting block (53) moves up and down in the strip hole.

5. The endoscope weight-reducing bracket according to claim 4, characterized in that: The sliding bodies (142) of the driving assemblies of the upper variable diameter support body (1) and the lower variable diameter support body (2) are connected via linkage components; the linkage components include shaft one (61), shaft two (62), traction rope one (63) and traction rope two (64); shaft one (61) and shaft two (62) are respectively arranged at both ends of the connecting tube (3); both ends of the traction rope one (63) and the traction rope two (64) are respectively connected to the semicircular movable body two (52) of the upper variable diameter support body (1) and the lower variable diameter support body (2); the traction rope one (63) is passed over from above the shaft one (61); and the traction rope two (64) is passed over from below the shaft two (62).

6. The endoscope weight-reducing bracket according to claim 3, characterized in that: The limiting assembly comprises a limiting frame (31) arranged at the outer end of the connecting tube (3); a cavity (32) is arranged in the limiting frame (31); the cavity is divided into a left cavity and a right cavity by a partition, and limiting pressure plates (32) are symmetrically arranged on both sides of the limiting frame (31); the two limiting pressure plates (32) are respectively limited in the left cavity and the right cavity, and the limiting pressure plates (32) slide left and right in the left cavity or the right cavity; through holes for the limiting pressure plates (32) to extend out are arranged on the outer sides of the left cavity and the right cavity; the limiting pressure plates (32) are connected to the partition through a return spring; an inclined surface 1 is arranged on the upper surface of the limiting pressure plate (32), and an inclined surface 2 matching the inclined surface 1 is arranged in the semicircular movable body 1 (51) in the lower variable diameter support body (2) and the upper variable diameter support body (1) that contacts the limiting pressure plate (32).

7. The endoscope weight-reducing bracket according to claim 3, characterized in that: A protective film sleeve is also provided between the movable ring (11) and the fixed ring (12); the protective film sleeve is located on the outer periphery of the support arm (13).

8. The endoscope weight-reducing bracket according to claim 1, characterized in that: The length of the membrane tube is 60-100cm.

9. The endoscope weight-reducing bracket according to claim 1, characterized in that: The length of the connecting tube (3) is 1.5-2.5 cm.

10. A method for using an endoscopic weight-reducing stent, characterized in that: The steps include: (1) Place the endoscopic weight-reducing stent into the digestive tract, with the connecting tube crossing the pylorus. The upper and lower variable diameter support bodies are located on both sides of the pylorus. side; the upper variable diameter support body is located in the gastric antrum, the lower variable diameter support body is located in the duodenum, and the membrane tube is located in the duodenum and the small intestine below; (2) The upper variable diameter support body and the lower variable diameter support body are controlled by the driving assembly so that the outer diameters of the upper variable diameter support body and the lower variable diameter support body are increased. Large, limit the connecting tube in the pylorus; (3) After eating, food forms chyme in the stomach. It moves, enters the connecting tube, the lower variable diameter support body and the membrane tube in sequence through the upper variable diameter support body, and finally enters the intestine.

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