Integrated dilatation balloon stent for digestive tract stenosis lesion

Abstract

The invention discloses an integrated dilatation balloon stent for digestive tract stenosis lesion, and belongs to the technical field of medical instruments, the integrated dilatation balloon stent comprises a stent body, the surface of the stent body is connected with a balloon body in a sleeving manner, the left side surface of the stent body is fixedly connected with a catheter, and the tail end of the catheter is fixedly connected with a connector; the interior of the connector is movably connected with a limiting rod through a rotating mechanism, and the tail end of the limiting rod is fixedly connected with a top block for clamping the surface of an external feeding pipe. According to the integrated dilatation balloon stent for the stenosis lesion of the digestive tract, at the beginning, a limiting rod and an ejection block are in an unfolded state, when a connector is in butt joint with a contrast agent feeding pipe, the contrast agent feeding pipe with the diameter smaller than that of the connector is in butt joint with the connector, and after butt joint is completed, an auxiliary ring is pushed to push the limiting rod, so that the limiting rod is in butt joint with the connector; and finally, the limiting rod and the ejector block retract, the ejector block abuts against the contrast agent supply pipe, the contrast agent supply pipe cannot fall off, and stability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an integrated dilation balloon stent for digestive tract stenosis lesions. Background Art

[0002] Digestive tract stenosis lesions can cause difficulties in eating, swallowing, and nausea for patients, which will further lead to malnutrition and a decline in resistance of the patients. Moreover, it can also trigger symptoms such as fever, anemia, and fatigue. In severe cases, digestive tract stenosis may lead to serious complications such as intestinal obstruction and intestinal perforation. When treating digestive tract stenosis lesions, an integrated dilation balloon stent needs to be used. When using the integrated dilation balloon stent, the balloon catheter with a stent is delivered into the human body, and then liquid is filled into the balloon to expand the balloon and the stent. After that, the liquid in the balloon is pumped out to make the balloon retract. At this time, the stent remains in the body and continues to play the role of supporting blood vessels, while the balloon can be withdrawn from the body together with instruments such as the catheter. When using the integrated dilation balloon stent, the sealing performance at the connection between the contrast agent supply tube and the balloon stent catheter connector is extremely important. If the sealing performance at the connection between the two is insufficient or there is a shaking situation, it will affect the stability of the pressure inside the balloon, and there will also be a situation of contrast agent leakage, bringing unnecessary trouble to the treatment process. To overcome the above defects, the prior art (a Chinese patent application with the application number 201620497938.3 and the application date of May 27, 2016) provides an anti-leakage device for a gastric reduction balloon, which includes a valve and a thin-walled tube. The end of the valve is a hollow tube structure with a closed end, which is communicated with the injection port through a gap, and one or more inclined small holes are arranged on the tube wall; both ends of the thin-walled tube are open and tightly sleeved outside the hollow tube wall, and its near-valve end is bonded to the hollow tube. Under a certain pressure, the liquid or gas injected from the injection port enters the hollow tube through the gap, expands the thin-walled tube and then flows out through the small holes. When the balloon is filled, the internal pressure of the balloon makes the gap airtight; at the same time, the thin-walled tube also closely adheres to the outer wall of the hollow tube. Through double anti-leakage measures, the liquid in the balloon cannot enter the human body through the anti-leakage valve.

[0003] During the use process, not only good sealing performance is required to prevent contrast agent leakage at the connection position, but also the stability of the connection between the pipelines needs to be noted. However, the device in the above application does not have the function of assisting the stable connection between the contrast agent supply tube and the catheter connector during the use process, has poor stability and low working efficiency, bringing unnecessary trouble to the treatment process. Therefore, we propose an integrated dilation balloon stent for digestive tract stenosis lesions to solve the above-mentioned problems. Summary of the Invention

[0004] The object of the present invention is to provide an integrated dilatation balloon stent for digestive tract stricture lesions, so as to solve the problems mentioned in the above background technology that during the use process, there is no auxiliary stable connection function for the contrast agent supply tube and the catheter connector, the stability is poor, the working efficiency is low, and unnecessary troubles are brought to the treatment process.

[0005] To achieve the above object, the present invention provides the following technical solutions: An integrated dilatation balloon stent for digestive tract stricture lesions, including a stent body, a balloon body is sleeved and connected to the surface of the stent body, and a catheter is fixedly connected to the left surface of the stent body, and a connector is fixedly connected to the end of the catheter; a limiting rod is movably connected to the inside of the connector through a rotating mechanism, and a top block for clamping the surface of an external feeding tube is fixedly connected to the end of the limiting rod; an auxiliary ring is slidably arranged on the surface of the connector, a locking mechanism is arranged between the auxiliary ring and the connector, and a connecting plate is fixedly connected to the surface of the connector; an auxiliary block is fixedly connected to the inner wall of the auxiliary ring; a sealing ring for preventing leakage is adhesively connected to the surface of the connector.

[0006] Preferably, a deep groove is formed on the surface of the connector, and the rotating mechanism includes a connecting shaft rotatably connected to the inner wall of the connector, and the connecting shaft is located inside the deep groove.

[0007] Preferably, the limiting rod is fixedly connected to the surface of the connecting shaft, and the limiting rods are equiangularly distributed inside the connector. The surface of the top block is inclined, and the inclined surface of the top block faces outward.

[0008] Preferably, a positioning groove is formed on the surface of the connector, a fixing plate is fixedly connected to the surface of the auxiliary ring, a long pin corresponding to the positioning groove is slidably arranged inside the fixing plate, and the long pin penetrates through the inside of the fixing plate.

[0009] Preferably, a partition plate is fixedly connected to the end of the long pin, a connecting spring is fixedly connected to the surface of the partition plate, and the other side of the connecting spring is fixedly connected to the upper surface of the fixing plate.

[0010] Preferably, the locking mechanism includes a clamping groove formed on the surface of the connector, the clamping groove corresponds to the long pin, a sliding groove is formed on the surface of the connector, and the surface of the long pin is inclined.

[0011] Preferably, the auxiliary blocks are symmetrically distributed on both sides of the auxiliary ring, the auxiliary blocks correspond to the sliding grooves one by one, the auxiliary blocks are slidably arranged inside the sliding grooves, a return spring for elastic reset is fixedly connected to the surface of the auxiliary block, the other side of the return spring is fixedly connected to the inner wall of the connector, and the surface of the auxiliary block is in contact with the inner wall of the sliding groove.

[0012] Preferably, a torsion spring having an elastic reset function is fixedly connected to the surface of the connecting shaft, and the other side of the torsion spring is fixedly connected to the inner wall of the connecting head.

[0013] Preferably, a connecting plate is fixedly connected to the surface of the connecting head, and the connecting plates are symmetrically distributed on both sides of the connecting head, and an airbag is bonded to the surface of the connecting plate.

[0014] Preferably, a delivery tube is fixedly connected to the surface of the airbag, and a terminal end of the delivery tube is fixedly connected to the sealing ring.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: by adopting a new structural design, the expanded limiting rod and the top block can be quickly retracted through the auxiliary ring, the contrast agent feeding tube is pressed, the friction between the contrast agent feeding tube and the connector is increased, and the stability is increased, and the contrast agent feeding tube will not fall off. At the end of the movement of the auxiliary ring, the airbag will be squeezed, so that the airbag supplies air to the sealing ring through the delivery tube, so that the sealing ring expands, and then the sealing ring seals the connection position between the contrast agent feeding tube and the connector, thereby optimizing the sealing effect, and thus no contrast agent leakage occurs, and the stability is improved. The specific contents are as follows: (1) The one-piece expandable balloon stent for treating stenosis of the digestive tract is initially in an expanded state with the limiting rod and the top block under the action of the connecting shaft and the torsion spring. When the connector is docked with the contrast agent supply tube, the contrast agent supply tube with a diameter smaller than the connector is docked with the connector. After docking, the auxiliary ring is pushed to push the limiting rod, and finally the limiting rod and the top block are retracted. The top block holds the contrast agent supply tube, so that the contrast agent supply tube will not fall, thereby increasing stability.

[0016] Furthermore, initially, the long pin inside the fixed plate is located inside the positioning groove, and after the auxiliary ring compresses the limiting rod to retract the limiting rod, the long pin will move to the inside of the slot under the action of the connecting spring. At this time, the auxiliary ring is in an engaged state with the connecting head through the long pin and the slot, and the auxiliary ring will not move, thereby ensuring the stability of the limiting rod and the top block.

[0017] Furthermore, during the working process of the auxiliary ring, the auxiliary block and the slide groove limit the moving distance of the auxiliary ring and prevent the auxiliary ring from falling, thereby ensuring stability. At the same time, during the movement of the auxiliary ring, the reset spring will be squeezed, and when the auxiliary ring needs to return to its original position, the long pin is pulled to move the end of the long pin out of the slot. At this time, the auxiliary ring and the auxiliary block move back under the action of the reset spring, and finally the end of the long pin can enter the positioning groove again, which is convenient for the next use of the auxiliary ring and the auxiliary block.

[0018] (2)After the auxiliary ring returns to its original position, the connecting shaft, the limiting rod, and the top block rotate under the action of the torsion spring. At this time, the limiting rod and the top block unfold again, facilitating the next use of the limiting rod and the top block.

[0019] (3)For the integrated dilatation balloon stent for digestive tract stricture lesions, initially, the air pressure inside the sealing ring and the air pressure inside the balloon are in a balanced state. When the auxiliary ring moves, the auxiliary ring will eventually squeeze the balloon, causing the air flow inside the balloon to enter the sealing ring through the delivery tube. At this time, the sealing ring expands, and then the sealing ring seals the connection position between the contrast agent supply tube and the connector, optimizing the sealing effect and thus preventing the leakage of contrast agent and improving the stability.

[0020] Furthermore, after the auxiliary ring returns to its original position, the balloon loses the extrusion force. At this time, the air flow inside the sealing ring moves towards the low-pressure position, and finally, the air pressure inside the sealing ring and the air pressure inside the balloon are in a balanced state again. At this time, the sealing ring shrinks, which will not affect the operation of the staff connecting the contrast agent supply tube next time, and the working efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the connection structure between the stent body and the balloon body of the present invention; Figure 2 Schematic diagram of the connection structure between the connector and the limiting rod of the present invention; Figure 3 Schematic diagram of the connection structure between the connector and the auxiliary block of the present invention; Figure 4 Schematic diagram of the connection structure between the connector, the connecting shaft, and the limiting rod of the present invention; Figure 5 Schematic diagram of the connection structure between the auxiliary ring and the auxiliary block of the present invention; Figure 6 For the present invention Figure 5 Enlarged structure schematic diagram at A in the present invention; Figure 7 Schematic diagram of the limiting rod in the retracted state of the present invention; Figure 8 Schematic diagram of the connection structure between the connector and the sealing ring of the present invention; Figure 9 For the present invention Figure 2 Enlarged structure schematic diagram at B in the present invention; Figure 10 Schematic diagram of the connection structure between the connector and the torsion spring of the present invention; Figure 11 Schematic diagram of the initial state of the sealing ring of the present invention; Figure 12 Schematic diagram of the expanded state of the sealing ring of the present invention.

[0022] In the figure: 1. Bracket body; 2. Balloon body; 3. Catheter; 4. Connector; 5. Connecting shaft; 6. Deep groove; 7. Limiting rod; 8. Auxiliary ring; 9. Fixed plate; 10. Long pin; 11. Positioning groove; 12. Partition board; 13. Connecting spring; 14. Auxiliary block; 15. Reset spring; 16. Card slot; 17. Chute; 18. Connecting plate; 19. Airbag; 20. Delivery tube; 21. Sealing ring; 22. Top block; 23. Torsion spring. Specific implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] The present invention provides the following technical solutions: An integrated dilatation balloon stent for digestive tract stenosis lesions.

[0025] Embodiment 1: By providing the limiting rod 7 and the top block 22 that can be quickly recovered, the contrast agent supply tube can be held firmly, so that the situation of shaking and wobbling of the contrast agent supply tube will not occur, improving the stability. As Figures 1 - 7 shown, it includes a bracket body 1. The surface of the bracket body 1 is sleeved and connected with a balloon body 2. A catheter 3 is fixedly connected to the left surface of the bracket body 1, and a connector 4 is fixedly connected to the end of the catheter 3. A limiting rod 7 is movably connected to the inside of the connector 4 through a rotating mechanism. The end of the limiting rod 7 is fixedly connected to a top block 22 that clamps the surface of the external feeding tube. An auxiliary ring 8 is slidably arranged on the surface of the connector 4. A locking mechanism is arranged between the auxiliary ring 8 and the connector 4. A connecting plate 18 is fixedly connected to the surface of the connector 4. A deep groove 6 is formed on the surface of the connector 4. The rotating mechanism includes a connecting shaft 5 rotatably connected to the inner wall of the connector 4. The connecting shaft 5 is located inside the deep groove 6. A limiting rod 7 is fixedly connected to the surface of the connecting shaft 5. The limiting rods 7 are equiangularly distributed inside the connector 4. The surface of the top block 22 is inclined, and the inclined surface of the top block 22 faces outward.

[0026] Initially, under the action of the connecting shaft 5 and the torsion spring 23, the limiting rod 7 and the top block 22 are in an unfolded state. When it is necessary to dock the contrast agent supply pipe, a contrast agent supply pipe with a pipe diameter smaller than the diameter of the connector 4 is docked inside the connector 4. Then, the auxiliary ring 8 is pushed, causing the auxiliary ring 8 to move to push the limiting rod 7. At this time, the limiting rod 7 and the connecting shaft 5 are retracted under the thrust force. Finally, the limiting rod 7 enters the inside of the deep groove 6, and the top block 22 presses the contrast agent supply pipe, improving the working stability of the contrast agent supply pipe and preventing the contrast agent supply pipe from shaking.

[0027] Embodiment 2: Different from Embodiment 1, a stable structure and a resilient structure of the auxiliary ring 8 are provided, making the use of the auxiliary ring 8 more stable and convenient. For example, Figure 2 and Figure 3 and Figure 5 and Figure 6 As shown, a positioning groove 11 is formed on the surface of the connector 4. A fixing plate 9 is fixedly connected to the surface of the auxiliary ring 8. A long pin 10 corresponding to the positioning groove 11 is slidably arranged inside the fixing plate 9, and the long pin 10 penetrates through the inside of the fixing plate 9.

[0028] A partition plate 12 is fixedly connected to the end of the long pin 10. A connecting spring 13 is fixedly connected to the surface of the partition plate 12, and the other side of the connecting spring 13 is fixedly connected to the upper surface of the fixing plate 9. An auxiliary block 14 is fixedly connected to the inner wall of the auxiliary ring 8. The locking mechanism includes a card slot 16 formed on the surface of the connector 4, and the card slot 16 corresponds to the long pin 10. A sliding groove 17 is formed on the surface of the connector 4, and the surface of the long pin 10 is inclined.

[0029] The auxiliary blocks 14 are symmetrically distributed on both sides of the auxiliary ring 8, and the auxiliary blocks 14 correspond to the sliding grooves 17 one by one. The auxiliary blocks 14 are slidably arranged inside the sliding grooves 17. A return spring 15 for elastic reset is fixedly connected to the surface of the auxiliary block 14, and the other side of the return spring 15 is fixedly connected to the inner wall of the connector 4. The surface of the auxiliary block 14 is in contact with the inner wall of the sliding groove 17. A torsion spring 23 for elastic reset is fixedly connected to the surface of the connecting shaft 5, and the other side of the torsion spring 23 is fixedly connected to the inner wall of the connector 4.

[0030] Initially, the long pin 10 inside the fixed plate 9 is located inside the positioning groove 11. At this time, the limiting rod 7 is in the unfolded state. When the limiting rod 7 needs to be retracted, directly push the auxiliary ring 8. At this time, the auxiliary ring 8 drives the auxiliary block 14 to slide inside the chute 17 (the auxiliary block 14 and the chute 17 limit the moving distance of the auxiliary ring 8, preventing the auxiliary ring 8 from falling off and ensuring stability). At this time, the long pin 10 will move upward inside the fixed plate 9 under the action of the inner wall of the connector 4. Furthermore, the partition plate 12 will stretch the connecting spring 13. After the auxiliary ring 8 pushes the limiting rod 7 to retract, the long pin 10 and the card slot 16 are in the same vertical direction. At this time, the long pin 10 descends into the card slot 16 under the action of the partition plate 12 and the connecting spring 13. At this time, the auxiliary ring 8 is stably stopped on the surface of the connector 4 under the action of the long pin 10 and the card slot 16. Furthermore, the limiting rod 7 is stably in the retracted state, ensuring the stability of the contrast agent supply tube during operation.

[0031] During the operation of the auxiliary ring 8, it drives the auxiliary block 14 to compress the return spring 15. That is, when the auxiliary ring 8 presses the limiting rod 7, the return spring 15 is always in a compressed state. When the auxiliary ring 8 needs to return to its original position, pull the partition plate 12. At this time, the end of the long pin 10 moves out of the card slot 16. Furthermore, the auxiliary ring 8 and the auxiliary block 14 move back under the action of the return spring 15, and finally the end of the long pin 10 enters the positioning groove 11 again, facilitating the next use of the auxiliary ring 8 and the auxiliary block 14. At this time, the limiting rod 7 loses pressure, and the limiting rod 7 and the top block 22 rotate back to the initial state under the action of the connecting shaft 5 and the torsion spring 23, facilitating the next use.

[0032] Embodiment 3: Different from Embodiment 2, a sealing ring 21 is provided. After the connector 4 is docked with the contrast agent supply tube, the sealing ring 21 can expand to block the connection, improving the sealing performance. As Figures 8 - 12 shown, a sealing ring 21 that plays a role in sealing and preventing leakage is adhesively bonded to the surface of the connector 4. A connecting plate 18 is fixedly connected to the surface of the connector 4, and the connecting plates 18 are symmetrically distributed on both sides of the connector 4. And an airbag 19 is adhesively bonded to the surface of the connecting plate 18. A delivery tube 20 is fixedly connected to the surface of the airbag 19, and the end of the delivery tube 20 is fixedly connected to the sealing ring 21.

[0033] Initially, the air pressure inside the sealing ring 21 and the air pressure inside the airbag 19 are in a balanced state. When the auxiliary ring 8 moves, the auxiliary ring 8 will eventually squeeze the airbag 19 on the surface of the connecting plate 18, causing the air flow inside the airbag 19 to enter the sealing ring 21 through the delivery pipe 20. At this time, the sealing ring 21 expands, and then the sealing ring 21 seals the connection position between the contrast agent supply pipe and the connector 4, optimizing the sealing effect, and thus preventing the leakage of the contrast agent, improving the stability. After the auxiliary ring 8 returns to its original position, the airbag 19 loses the extrusion force. At this time, the air flow inside the sealing ring 21 moves towards the low-pressure position, and finally the air pressure inside the sealing ring 21 and the air pressure inside the airbag 19 are in a balanced state again. At this time, the sealing ring 21 shrinks, which will not affect the operation of the staff connecting the contrast agent supply pipe next time, and the working efficiency is high.

[0034] The above is the working process of the entire device, and the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An integrated dilatation balloon stent for digestive tract stricture lesions, comprising a stent body (1), a balloon body (2) is sleeved and connected to the surface of the stent body (1), a catheter (3) is fixedly connected to the left surface of the stent body (1), and a connector (4) is fixedly connected to the end of the catheter (3); It is characterized in that: A limiting rod (7) is movably connected to the inside of the connector (4) through a rotating mechanism, and a top block (22) for clamping the surface of an external feeding tube is fixedly connected to the end of the limiting rod (7); An auxiliary ring (8) is slidably arranged on the surface of the connector (4), a locking mechanism is arranged between the auxiliary ring (8) and the connector (4), and a connecting plate (18) is fixedly connected to the surface of the connector (4); An auxiliary block (14) is fixedly connected to the inner wall of the auxiliary ring (8); A sealing ring (21) for sealing and preventing leakage is adhesively connected to the surface of the connector (4).

2. The one-piece dilatation balloon stent for digestive tract stricture lesions according to claim 1, characterized in that: A deep groove (6) is formed on the surface of the connector (4), and the rotating mechanism includes a connecting shaft (5) rotatably connected to the inner wall of the connector (4), and the connecting shaft (5) is located inside the deep groove (6).

3. The one-piece dilatation balloon stent for digestive tract stricture lesions according to claim 2, wherein: The limiting rod (7) is fixedly connected to the surface of the connecting shaft (5), and the limiting rods (7) are equally angularly distributed inside the connector (4). The surface of the top block (22) is inclined, and the inclined surface of the top block (22) faces outward.

4. The one-piece dilation balloon stent for digestive tract stricture lesions according to claim 1, wherein: A positioning groove (11) is formed on the surface of the connector (4), a fixing plate (9) is fixedly connected to the surface of the auxiliary ring (8), a long pin (10) corresponding to the positioning groove (11) is slidably arranged inside the fixing plate (9), and the long pin (10) penetrates through the inside of the fixing plate (9).

5. The one-piece dilatation balloon stent for digestive tract stricture lesions according to claim 4, characterized in that: A partition plate (12) is fixedly connected to the end of the long pin (10), a connecting spring (13) is fixedly connected to the surface of the partition plate (12), and the other side of the connecting spring (13) is fixedly connected to the upper surface of the fixing plate (9).

6. The one-piece dilatation balloon stent for digestive tract stricture lesions according to claim 4, characterized in that: The locking mechanism includes a clamping groove (16) formed on the surface of the connector (4), the clamping groove (16) corresponds to the long pin (10), a sliding groove (17) is formed on the surface of the connector (4), and the surface of the long pin (10) is inclined.

7. The one-piece dilation balloon stent for digestive tract stricture lesions according to claim 6, characterized in that: The auxiliary blocks (14) are symmetrically distributed on both sides of the auxiliary ring (8), the auxiliary blocks (14) correspond to the sliding grooves (17) one by one, the auxiliary blocks (14) are slidably arranged inside the sliding grooves (17), a return spring (15) for elastic reset is fixedly connected to the surface of the auxiliary blocks (14), the other side of the return spring (15) is fixedly connected to the inner wall of the connector (4), and the surface of the auxiliary blocks (14) is in contact with the inner wall of the sliding grooves (17).

8. The one-piece dilatation balloon stent for digestive tract stricture lesions according to claim 2, characterized in that: A torsion spring (23) for elastic reset is fixedly connected to the surface of the connecting shaft (5), and the other side of the torsion spring (23) is fixedly connected to the inner wall of the connector (4).

9. The one-piece dilatation balloon stent for digestive tract stricture lesions according to claim 1, wherein: A connecting plate (18) is fixedly connected to the surface of the connector (4), and the connecting plates (18) are symmetrically distributed on both sides of the connector (4), and an airbag (19) is adhesively bonded to the surface of the connecting plate (18).

10. The one-piece dilatation balloon stent for digestive tract stricture lesions according to claim 9, wherein: A delivery pipe (20) is fixedly connected to the surface of the airbag (19), and the end of the delivery pipe (20) is fixedly connected to the sealing ring (21).

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