A single-hand-held electric double-balloon digestive tract dilator

Abstract

The present invention discloses a single-hand-held electric double-balloon digestive tract dilator, comprising an outer balloon and an inner balloon, wherein the inner balloon is arranged inside the outer balloon and connected with the inner tube, the outer balloon is connected with one end of the outer tube, the inner tube is located inside the outer tube, the other end of the outer tube is connected with a first branch tube and a second branch tube, the second branch tube extends into the outer tube and is communicated with the inner tube, the first branch tube and the second branch tube are connected with a syringe through a three-way adapter, and the syringe is installed on a syringe control mechanism; an inner patch pressure sensor is arranged on the inner wall of the inner balloon, an outer patch pressure sensor is arranged on the inner wall of the outer balloon, an outer balloon pressure gauge is arranged on the first branch tube, and the outer balloon pressure gauge is used to record the pressure value detected by the outer patch pressure sensor, and an inner balloon pressure gauge is arranged on the second branch tube, and the inner balloon pressure gauge is used to record the pressure value detected by the inner patch pressure sensor; wherein the syringe control mechanism is composed of a single-hand-held electric pump.

Description

Technical Field

[0001] The invention belongs to the technical field of medical machinery, and in particular relates to a single-handheld electric double-balloon digestive tract dilator. Background Art

[0002] Digestive tract stenosis refers to benign or malignant stenosis of the digestive tract caused by benign or malignant lesions or scars after surgery, which often leads to complete or incomplete digestive tract obstruction, causing dysfunction of feeding, digestion, absorption and excretion, leading to malnutrition, water and electrolyte imbalance, weight loss, cachexia, etc. Digestive tract stenosis is a common clinical disease or pathophysiological change. Common diseases include: 1. Inactive inflammatory stenosis of the digestive tract caused by various causes; 2. Anastomotic stenosis after gastrointestinal surgery; 3. Achalasia, sphincter of Oddi dysfunction; 4. Digestive tract scar stenosis; 5. Advanced digestive tract tumors; 6. Abnormal development of the digestive tract; 7. Stenosis caused by foreign bodies or stones. Among digestive tract stenosis, esophageal stenosis or postoperative esophageal anastomotic stenosis is the most common.

[0003] Endoscopic dilatation is a common treatment method for gastrointestinal stenosis that is less invasive and effective. Endoscopic dilatation refers to a treatment method in which a dilator is placed under direct endoscopy or with the help of an endoscope to dilate the stenosis to relieve symptoms. In the past, it was mainly used in the esophagus, but now it has been gradually applied to the rectum, duodenal bulb, colon, pancreaticobiliary duct, etc., thus avoiding surgery in many cases and achieving the purpose of relieving symptoms.

[0004] The principle of dilation is to forcefully stretch the fibrous tissue around the stenosis to expand the local area. Common methods: 1. Bougie dilation method: Find the stenosis under endoscopy, insert the guide wire through the biopsy channel to the distal end of the stenosis, remove the endoscope and retain the guide wire after the stenosis is identified, and slowly push the dilation bougie along the guide wire until it passes through the stenosis, gradually increase the diameter of the bougie, and gradually dilate the stenosis. After the dilation is completed, withdraw the bougie and guide wire, and observe whether there is active bleeding or perforation. ~ Dilatation can be repeated after 3 weeks. Disadvantages of bougie dilatation: (1) The dilatation process is performed blindly without endoscopic monitoring, and it is impossible to observe whether the dilatation site is accurate or whether there is mucosal bleeding, tearing or perforation in the dilatation reaction. (2) The dilatation intensity cannot be finely adjusted, and the dilatation intensity can only be adjusted by changing the diameter of the bougie. (3) Bougie dilatation can only be used for dilatation of the esophagus and cardia, and cannot be used for other digestive tracts. Given the limitations of bougie dilatation, it is now rarely used in clinical practice.

[0005] 2. Balloon dilatation: Find the stenosis under endoscopy, insert the dilatation balloon to the stenosis through the biopsy channel, place the middle of the balloon into the stenosis, or insert the guide wire into the digestive tract through the biopsy channel, pass the guide wire through the stenosis, and guide the middle of the balloon to the narrowest part. The diameter of the balloon in different parts is also different. The esophageal balloon is 12-18mm, the cardia balloon is 16-20mm, and the colon balloon is 15-20mm. Use a pressure pump to slowly inject contrast agent or sterile saline, continue to dilate for 1-3 minutes, and repeat the dilatation 2-3 times. Return the balloon catheter to the endoscopic biopsy hole. If the dilatation is effective, the endoscope can pass through the stenosis smoothly. Compared with bougie dilatation, balloon dilatation has direct monitoring of the dilatation process, and the dilatation intensity can be adjusted finely. It has a wide range of applications and can be used for dilatation of stenosis of the entire digestive tract. However, the commonly used dilatation balloons still have obvious defects: (1) When a single balloon is expanded, the pressure gauge can only measure the input pressure, but not the stress (pressure) on the digestive tract wall. Because the degree of stenosis (diameter) of the digestive tract wall varies greatly, the stress (pressure) on the stenosis part is different for the same input pressure (force), and the stress (pressure) on the digestive tract wall cannot be accurately measured, resulting in insufficient expansion and failure to achieve the treatment purpose, requiring multiple expansions, or excessive expansion pressure, leading to digestive tract perforation and serious medical complications, resulting in medical disputes. Digestive tract perforation is a common complication during expansion, which brings serious troubles and unsafe hidden dangers to clinical medical care. (2) The commonly used balloon dilators increase the pressure by manually rotating the pressure vessel screw during expansion. The process is slow and unstable. If an electric constant-speed screw is used to increase the pressure, and a speed-controlled booster pump is used according to the required boosting speed, and a reverse gear screw is used to quickly reduce the pressure when reducing the pressure, the entire expansion process will become labor-saving, fast, more stable, and safe. (3) With the expanders currently in use, an assistant needs to hold the expander with both hands and rotate the screw during expansion. Other auxiliary coordination requires additional assistants. Summary of the invention

[0006] In view of the above-mentioned technical problems, the present invention proposes a single-handheld electric double-balloon digestive tract dilator.

[0007] The technical solution adopted by the present invention is:

[0008] A single-handheld electric double-balloon digestive tract dilator comprises an outer balloon and an inner balloon, wherein the inner balloon is arranged inside the outer balloon and connected to the inner tube, the outer balloon is connected to one end of the outer tube, the inner tube is located inside the outer tube, the other end of the outer tube is connected to a first branch tube and a second branch tube, the second branch tube extends into the outer tube and is connected to the inner tube, the first branch tube and the second branch tube are connected to a syringe via a three-way adapter, and the syringe is installed on a syringe control mechanism.

[0009] Preferably, the inner wall of the inner balloon is provided with an inner patch pressure sensor, the inner wall of the outer balloon is provided with an outer patch pressure sensor, the first branch tube is provided with an outer balloon pressure gauge, the outer balloon pressure gauge is used to record the pressure value detected by the outer patch pressure sensor, and the second branch tube is provided with an inner balloon pressure gauge, the inner balloon pressure gauge is used to record the pressure value detected by the inner patch pressure sensor.

[0010] Preferably, the three-way adapter includes an adapter block, an adapter cavity is arranged inside the adapter block, an outer bag liquid outlet and an inner bag liquid outlet are arranged at the upper end of the adapter block, a liquid inlet is arranged at the lower end of the adapter block, the outer bag liquid outlet, the inner bag liquid outlet and the liquid inlet are all connected with the adapter cavity, a piston is arranged in the adapter cavity, and mutually symmetrical left notches and right notches are arranged at both ends of the bottom of the piston, a strip-shaped tooth groove is arranged on the front side of the piston, a groove is arranged at the center of the front side of the adapter block, the groove is connected with the adapter cavity, a gear is arranged in the groove, the gear is arranged on a rotating shaft, the two ends of the rotating shaft are rotatably connected with the inner wall of the groove, and the gear is meshed with the tooth groove.

[0011] Preferably, the piston is located between the outer bag liquid outlet and the inner bag liquid outlet, and the side walls at both ends of the piston are aligned with the inner sides of the outer bag liquid outlet and the inner bag liquid outlet respectively, and the left notch and the right notch are both located at the two ends of the liquid inlet.

[0012] Preferably, a fastener is further provided between the three-way adapter and the syringe, the fastener comprising an outer cylinder, one end of the outer cylinder being integrally formed with the liquid inlet, an annular groove being provided on the outer wall of the outer cylinder along its circumferential direction, a rotating ring being provided in the annular groove, a plurality of equally spaced sliding grooves being provided on the inner wall of the outer cylinder along its circumferential direction, the sliding grooves being communicated with the annular groove, a sliding block being provided in each sliding groove, the outer end surface of the sliding block being connected to the inner end surface of the rotating ring, a side wall of the sliding block being hinged to one end of the second support rod, a pair of fixing blocks being further provided on the inner wall of the outer cylinder along its circumferential direction, a side wall of the fixing block being hinged to one end of the first support rod, the other end of the first support rod and the other end of the second support rod being hinged to the outer end surface of the arc-shaped clamping plate, the needle of the syringe passes through the outer cylinder and is inserted into the liquid inlet, and the outer wall of the needle is fixed by the arc-shaped clamping plate.

[0013] Preferably, a circular ring is arranged on the outer end surface of the rotating ring along its circumferential direction, a baffle is arranged on the side wall of the circular ring, and a fixing column matched with the baffle is arranged on the outer wall of the outer cylinder.

[0014] Preferably, the syringe control mechanism includes a mounting box, a pistol-type handle is provided at the lower end of the mounting box, a mounting groove is provided at the side wall of the mounting box, a clamping plate and a limit block are provided in sequence from near to far inside the mounting groove, the side walls of the clamping plate and the limit block are provided with a penetrating arc-shaped clamping groove along their horizontal direction, an arc-shaped limit plate is provided on the outer end side of the arc-shaped clamping groove of the limit block, a guide hole is provided on the inner end surface of the mounting groove, a clamping seat is provided in the guide hole, one end of the clamping seat extends into the interior of the mounting box and is connected with the transmission assembly, the other end of the clamping seat clamps the pressing portion of the piston rod end of the syringe, the injection end of the syringe is clamped in the arc-shaped clamping groove on the clamping plate and the limit block, and a fixing member is also provided between the clamping plate and the limit block, and the fixing member fixes the syringe.

[0015] Preferably, the fixing member includes a positioning block and a mounting block, and the positioning block and the mounting block are symmetrically arranged at the upper and lower ends of the inner wall of the mounting groove; the mounting block is provided with a "convex" type receiving groove, a connecting rod is provided in the receiving groove, a stop block is provided on the inner end surface of the connecting rod, a compression spring is sleeved on the connecting rod, and the compression spring is located in the receiving groove; a fixing plate is provided on the outer end surface of the connecting rod, a fixing protrusion is provided on the upper end of the fixing plate, a positioning hole matching the fixing protrusion is provided on the positioning block, and a rubber gasket is provided on the inner wall of the positioning hole.

[0016] Preferably, a circular plate is provided at one end of the clamping seat, and a clamping groove is provided along the horizontal direction of the circular plate. An opening is provided on the distal end surface of the circular plate, and the opening is communicated with the clamping groove. The pressing portion of the piston rod is located in the clamping groove, and the piston rod extends from the opening. A limiting groove is provided at the other end of the clamping seat, and a threaded hole is also provided on the clamping seat, and the threaded hole is located between the limiting groove and the circular plate.

[0017] Preferably, the transmission assembly includes a motor, a screw and a guide rod, a baffle is provided inside the installation box, the motor and the screw are located on both sides of the baffle, the output shaft of the motor passes through the baffle and is connected to the reducer, the reducer is connected to one end of the screw through a coupling, the other end of the screw is rotatably connected to the inner end surface of the installation box, one end of the guide rod is connected to the baffle, and the other end is connected to the inner end surface of the installation, the threaded hole on the clamping seat passes through the screw, the limiting groove on the clamping seat is sleeved on the guide rod, and a limiting spring is provided on the guide rod, a power supply is provided inside the pistol handle, and the power supply is connected to the motor, and an on / off key, a 1st gear key, a 2nd gear key and an off gear key are provided outside the pistol handle, the on / off key is connected to the motor through the power supply, and the 1st gear key, the 2nd gear key and the off gear key are connected to the reducer.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. At present, when single-balloon dilatation is commonly used, the pressure gauge can only measure the input pressure, but cannot monitor the stress (pressure) borne by the digestive tract wall. Because the degree of stenosis (diameter) of the digestive tract wall varies greatly, the stress (pressure) borne by the stenotic part is different for the same input pressure (force), and the stress (pressure) borne by the stenotic part cannot be accurately measured. This results in insufficient dilatation and the inability to achieve the treatment purpose, which requires multiple dilatations, or excessive dilatation pressure, leading to digestive tract perforation and serious medical complications, resulting in medical disputes. Digestive tract perforation is a complication that often occurs during dilatation, which brings serious troubles and unsafe hidden dangers to clinical medical care. The present invention designs a double-balloon dilatation balloon, which can simultaneously monitor the input pressure (force) and the stress (pressure) of the digestive tract wall during dilatation, and adjust the input pressure (force) according to the pressure (force) borne by the digestive tract wall. It is safer and more efficient than traditional single-balloon dilatation, and reduces the occurrence of medical accidents. (2) The currently commonly used balloon dilatators rely on manual rotation of the pressure vessel screw to increase the pressure during dilatation, and the process is slow and unstable. The present invention is designed to increase the pressure by using an electric constant speed propulsion screw, and according to the required pressure increase speed, a speed regulating booster pump is used. When reducing the pressure, the screw is retracted in reverse gear to quickly reduce the pressure, which will make the entire expansion process labor-saving, fast, more stable and safe. (3) The expander currently used requires the assistant to hold the expander with both hands and rotate the screw during expansion, and other auxiliary cooperation requires additional assistants. The present invention is designed to use a single-handed electric expander, so the assistant can save the other hand for other cooperation, reducing the number of people coordinating during the operation.

[0020] 2. A three-way adapter is designed in the present invention to achieve the connection between the syringe and the outer balloon and the inner balloon. There is no need to replace the syringe or to pull out and plug the syringe in again. One syringe can be used to inject liquid into the outer balloon as well as the inner balloon, which makes the operation simpler and more convenient. In the present invention, the three-way adapter includes an adapter block, an adapter cavity is provided in the adapter block, an outer capsule liquid outlet and an inner capsule liquid outlet are provided at the upper end of the adapter block, a liquid inlet is provided at the lower end of the adapter block, the outer capsule liquid outlet, the inner capsule liquid outlet and the liquid inlet are all connected to the adapter cavity, a piston is provided in the adapter cavity, and mutually symmetrical left and right notches are provided at both ends of the bottom of the piston, the left notch and the right notch are both located at both ends of the liquid inlet, and the piston is located between the outer capsule liquid outlet and the inner capsule liquid outlet. The side walls at both ends of the piston are aligned with the inner sides of the outer bag outlet and the inner bag outlet respectively. A strip-shaped tooth groove is arranged on the front of the piston, and a groove is arranged at the center of the front of the adapter block. The groove is connected with the adapter cavity. A gear is arranged in the groove, and the gear is meshed with the tooth groove. When the injection direction needs to be changed, the piston is pulled left and right in the adapter cavity by turning the gear meshing tooth groove until the left notch / right notch is connected with the liquid inlet, so as to realize the injection of the inner balloon or the outer balloon, and the operation is more convenient.

[0021] 3. In the present invention, a fastener is provided between the three-way adapter and the syringe, so that the connection between the syringe and the three-way adapter is convenient and firm. The fastener comprises an outer cylinder, one end of the outer cylinder is integrally formed with the liquid inlet, an annular groove is provided on the outer wall of the outer cylinder along its circumferential direction, a rotating ring is provided in the annular groove, a plurality of equally spaced sliding grooves are provided on the inner wall of the outer cylinder along its circumferential direction, the sliding grooves are communicated with the annular groove, a slider is provided in each sliding groove, the outer end face of the slider is connected to the inner end face of the rotating ring, a side wall of the slider is hinged to one end of the second support rod, a pair of fixing blocks are further provided on the inner wall of the outer cylinder along its circumferential direction, a side wall of the fixing block is hinged to one end of the first support rod, the other end of the first support rod and the other end of the second support rod are both hinged to the outer end face of the arc-shaped clamping plate, the inner end face of the arc-shaped clamping plate can also be designed with a plurality of barbs, and the outer wall of the needle needs to be fixed. When the timing is right, the rotating ring is rotated. In order to facilitate the rotation, a circular ring is arranged on the outer end face of the rotating ring along its circumferential direction. The circular ring protrudes from the outer wall surface of the outer cylinder, and a baffle is arranged on the side wall of the circular ring. A fixing column matching the baffle is arranged on the outer wall of the outer cylinder. The circular ring is turned to pull the slider to slide along the slide groove, and the slider approaches the fixed block. The second support rod and the first support rod approach each other, squeezing the arc-shaped card plate to move toward the center. When the slider moves to the other end of the slide groove, the arc-shaped card plate is squeezed on the outer wall of the needle, and the barbs on the inner end face of the arc-shaped card plate pierce the outer wall of the needle to form a certain gripping force, thereby improving the stability of the needle fixation. At this time, the baffle on the side wall of the circular ring rotates to the other end of the fixed column. Due to the limitation of the fixed column, the circular ring will not rotate at will. The baffle can be made of elastic steel. When the external force is large, it can be deformed and moved to the other end of the fixed column.

[0022] 4. The present invention designs a syringe control structure, which adopts an automated control method to replace the manual push method of the transmission syringe to achieve liquid injection. The syringe control structure includes a syringe fixing part and a power transmission part. The syringe fixing part is designed in the mounting groove on the side wall of the mounting box to fix the syringe. The power transmission part is designed inside the mounting box and is connected to the pressing part of the syringe through a clamping seat. A circular plate is provided at one end of the clamping seat, and a clamping groove is provided along the horizontal direction of the circular plate. An opening is provided on the distal end surface of the circular plate, and the opening is connected to the pressing part of the syringe. The clamping grooves are connected, the pressing part of the piston rod is located in the clamping groove, and the piston rod extends from the opening. A limit groove is set at the other end of the clamping seat, and a threaded hole is also set on the clamping seat. The threaded hole is located between the limit groove and the circular plate. The threaded hole runs through the screw rod inside the installation box. The limit groove is set on the guide rod. Turn on the switch key, connect the power supply to the motor, press the 1st gear key or the 2nd gear key to change the speed of the reducer, thereby adjusting the size of the syringe injection. Press the retract key, the screw rod rotates in the opposite direction, driving the clamping seat to move backward, and the liquid in the balloon can be extracted. The operation flexibility is high, and the automatic control operation is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 Shown is a schematic structural diagram of a single-handheld electric double-balloon digestive tract dilator in this embodiment;

[0025] Figure 2 Shown is a state diagram of the use of this embodiment; Figure 3 Shown is a front cross-sectional view of a three-way adapter;

[0026] Figure 4 Shown Figure 3 Cross-sectional view in the BB direction;

[0027] Figure 5 Shown Figure 2 The enlarged view of point A in the middle;

[0028] Figure 6 Shown is a side sectional view of the outer cylinder;

[0029] Figure 7 The figure shows a side cross-sectional view of the outer barrel when the needle is inserted into the liquid inlet;

[0030] Figure 8 Shown is a front cross-sectional view of a fastener;

[0031] Fig. 9 Shown is a side view of the syringe control mechanism;

[0032] Fig.10 Shown is a top cross-sectional view of the injector control mechanism;

[0033] Fig.11 Shown is a side view of the fixing plate;

[0034] Fig.12 Shown is a schematic diagram of the clamping seat.

[0035] Among them, 1. outer balloon; 2. inner balloon; 3. outer tube; 4. first branch tube; 5. second branch tube;

[0036] 6. Three-way adapter; 601. Adapter block; 6011. Adapter chamber; 602. Piston; 6021. Left notch; 6022. Right notch; 6023. Tooth groove; 603. Liquid inlet; 604. Outer bag liquid outlet; 605. Inner bag liquid outlet; 606. Gear;

[0037] 7. Fastener; 701. Outer cylinder; 7011. Slide groove; 702. Ring; 703. Rotating ring; 704. Sliding block; 705. Fixed block; 706. First steering rod; 707. Second steering rod; 708. Arc-shaped card plate; 709. Blocking piece; 710. Fixed column;

[0038] 8. syringe; 801. needle; 802. piston rod;

[0039] 9. Injector control mechanism; 901. Mounting box; 9011. Guide hole; 9012. Mounting slot; 902. Clamping seat; 9021. Circular plate; 9022. Clamping slot; 9023. Opening; 9024. Threaded hole; 9025. Limiting slot; 903. Card plate; 904. Positioning block; 9041. Positioning hole; 905. Fixing plate; 9051. Arc-shaped card slot; 9052. Fixing protrusion; 9053. Connecting rod; 9054, stopper; 9055, compression spring; 906, limit block; 9061, arc limit plate; 907, mounting block; 908, pistol handle; 909, on / off key; 910, 1st gear key; 911, 2nd gear key; 912, back gear key; 913, baffle; 914, motor; 915, reducer; 916, reducer; 917, lead screw; 918, guide rod; 919, limit spring;

[0040] 10. External patch pressure sensor; 11. External balloon pressure gauge; 12. Internal balloon pressure gauge; 13. Internal patch pressure sensor. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Example 1

[0044] This embodiment specifically provides a single-hand-held electric double-balloon digestive tract dilator, such as Figure 1As shown, it includes an outer balloon 1 and an inner balloon 2, the inner balloon 2 is arranged inside the outer balloon 1 and connected to the inner tube, the outer balloon 1 is connected to one end of the outer tube 3, the inner tube is located inside the outer tube 3, the other end of the outer tube 3 is connected with a first branch tube 4 and a second branch tube 5, the second branch tube 5 extends into the outer tube 3 and is connected with the inner tube, the first branch tube 4 and the second branch tube 5 are connected to a syringe 8 through a three-way adapter 6, and the syringe 8 is installed on a syringe control mechanism 9.

[0045] In this embodiment, the inner wall of the inner balloon 2 is provided with an inner patch pressure sensor 13, the inner wall of the outer balloon 1 is provided with an outer patch pressure sensor 10, the first branch pipe 4 is provided with an outer balloon pressure gauge 11, the outer balloon pressure gauge 11 is used to record the pressure value detected by the outer patch pressure sensor 10, and the second branch pipe 5 is provided with an inner balloon pressure gauge 12, the inner balloon pressure gauge 12 is used to record the pressure value detected by the inner patch pressure sensor 13. The outer patch pressure sensor 10 and the inner patch pressure sensor 13 both use existing sensors, and are connected to the outer balloon pressure gauge 11 and the inner balloon pressure gauge 12 through wires, and the pressure changes of the outer patch pressure sensor 10 and the inner patch pressure sensor 13 are recorded through the outer balloon pressure gauge 11 and the inner balloon pressure gauge 12. The sensors themselves have not been improved, so they will not be described one by one.

[0046] In this embodiment, if Figure 3-4 The three-way adapter 6 includes an adapter block 601, an adapter cavity 6011 is arranged inside the adapter block 601, an outer capsule liquid outlet 604 and an inner capsule liquid outlet 605 are arranged at the upper end of the adapter block 601, a liquid inlet 603 is arranged at the lower end of the adapter block 602, the outer capsule liquid outlet 604, the inner capsule liquid outlet 605 and the liquid inlet 603 are all connected to the adapter cavity 6011, a piston 602 is arranged in the adapter cavity 6011, and the piston 602 is arranged in the adapter cavity 6011. The two ends of the bottom of the plug 602 are provided with a left notch 6021 and a right notch 6022 which are symmetrical to each other. The front of the piston 602 is provided with a strip-shaped tooth groove 6023. The center of the front of the adapter block 602 is provided with a groove, which is connected to the adapter chamber 6011. A gear 606 is provided in the groove. The gear 606 is set on a rotating shaft. The two ends of the rotating shaft are rotatably connected to the inner wall of the groove. The gear 606 is meshed with the tooth groove 6023.

[0047] The piston 602 is located between the outer bag liquid outlet 604 and the inner bag liquid outlet 605, and the side walls at both ends of the piston 602 are aligned with the inner sides of the outer bag liquid outlet 604 and the inner bag liquid outlet 605, respectively, and the left notch 6021 and the right notch 6022 are both located at the two ends of the liquid inlet 603. Moreover, the tooth groove 6023 is smaller than the length of the piston 602, and when the tooth groove 6023 moves to the end, the left notch 6021 or the right notch 6022 is just connected with the liquid inlet 603.

[0048] When it is necessary to change the connection mode between the syringe 8 and the outer balloon 1 or the inner balloon 2, the gear 606 is moved to engage the tooth groove 6023 to pull the piston 602 to move left and right in the switching chamber 6011 until the left notch 6021 / right notch 6022 is connected to the liquid inlet 6023, so that the syringe 8 can be connected to the outer balloon 1 or the inner balloon 2 for injection. The syringe 8 is switched with the outer balloon 1 and the inner balloon 2 through the three-way adapter 6, and there is no need to replace the syringe 8 or pull out and plug the syringe 8. One syringe 8 can be used to inject liquid into the outer balloon 1 or the inner balloon 2, and the operation is simpler and more convenient.

[0049] In this embodiment, if Figure 9-12 As shown, the syringe control mechanism 9 includes a mounting box 901, the side wall of the mounting box 901 is provided with a mounting groove 9012, and a card plate 903 and a limit block 906 are sequentially arranged inside the mounting groove 9012 from near to far, and two card plates 903 are provided. The side walls of the card plate 903 and the limit block 906 are both provided with a penetrating arc-shaped card groove along their horizontal direction, and the outer end side of the arc-shaped card groove of the limit block 906 is provided with an arc-shaped limit plate 9061, and the inner end surface of the mounting groove 9012 is provided with a A guide hole 9011 is provided, and a clamping seat 902 is provided in the guide hole 9011. One end of the clamping seat 902 extends into the interior of the installation box 901 and is connected to the transmission assembly. The other end of the clamping seat 902 clamps the pressing part at the end of the piston rod 802 of the syringe 8. The injection end of the syringe 8 is clamped in the arc-shaped groove on the clamping plate 903 and the limit block 906. A fixing piece is also provided between the clamping plate 903 and the limit block 906, and the fixing piece fixes the syringe 8.

[0050] The fixing member includes a positioning block 904 and a mounting block 907, which are symmetrically arranged at the upper and lower ends of the inner wall of the mounting groove 9012, and a "convex" type receiving groove is arranged on the mounting block 907, a connecting rod 9053 is arranged in the receiving groove, a stopper 9054 is arranged on the inner end surface of the connecting rod 9053, a compression spring 9055 is sleeved on the connecting rod 9053, and the compression spring 9055 is located in the receiving groove, a fixing plate 905 is arranged on the outer end surface of the connecting rod 9053, a fixing protrusion 9052 is arranged on the upper end of the fixing plate 905, a positioning hole 9041 matching with the fixing protrusion 9052 is arranged on the positioning block 904, and a rubber gasket is arranged on the inner wall of the positioning hole 9041. In this embodiment, an arc-shaped card groove 9051 is arranged on the inner end surface of the fixing plate 905, and the arc-shaped card groove 9051 is in contact with the outer wall of the syringe 8.

[0051] In this embodiment, the clamping plate 903 and the limiting block 906 both limit the syringe 8 in the X direction, and the fixing member fixes the syringe 8 from the Y direction, thereby forming a "cross" structure for fixing the syringe 8 itself, which is firmly fixed and will not become loose due to changes in external force.

[0052] The syringe 8 is pushed into the mounting groove along the horizontal direction of the mounting groove, and the injection end surface of the syringe 8 is limited by the arc-shaped limiting plate 9061 to prevent the syringe 8 from moving out of the arc-shaped slot along the horizontal direction. During this process, the fixing plate 905 is rotated downward. After the syringe 8 is placed, the fixing plate 905 is pulled outward, and then the fixing plate 905 is rotated upward around the mounting block 907, and then the fixing plate 905 is released. Under the action of the compression spring 9055, the fixing plate 905 is squeezed toward the syringe 8, and the fixing protrusion 9051 is restricted in the positioning hole 9041, thereby fixing the syringe 8.

[0053] The transmission assembly is installed inside the installation box 901, and the transmission assembly includes a motor 914, a screw rod 917 and a guide rod 918. A baffle 913 is provided inside the installation box 901. The motor 914 and the screw rod 917 are located on both sides of the baffle 913. The output shaft of the motor 914 passes through the baffle 913 and is connected to the reducer 915. The reducer 915 is connected to one end of the screw rod 917 through a coupling 916. The other end of the screw rod 917 is rotatably connected to the inner end surface of the installation box 901. One end of the guide rod 918 is connected to the baffle 914, and the other end thereof is connected to the inner end surface of the installation box.

[0054] The transmission assembly is connected to the syringe 8 through a clamping seat 902. A circular plate 9021 is provided at one end of the clamping seat 902. The circular plate 9021 is provided with a clamping groove 9022 along its horizontal direction. An opening 9023 is provided on the distal end surface of the circular plate 9021. The opening 9023 is communicated with the clamping groove 9022. The pressing portion of the piston rod 802 is located in the clamping groove 9022, and the piston rod 802 extends from the opening 9023. A limiting groove 9025 is provided at the other end of the clamping seat 902. A threaded hole 9024 is also provided on the clamping seat 902. The threaded hole 9024 is located between the limiting groove 9025 and the circular plate 9021. The clamping groove 9022 passes through multiple surfaces of the circular plate 9021 in the horizontal direction, so as to facilitate the pressing part of the syringe 8 to be pushed into the clamping groove 9022 for limiting, and the opening 9023 is designed to facilitate the piston rod 802 to extend from the clamping groove 9022. The threaded hole 9024 on the clamping seat 902 passes through the screw rod 917, and the limiting groove 9025 on the clamping seat 902 is sleeved on the guide rod 918, and the guide rod 918 is provided with a limiting spring 919.

[0055] In this embodiment, a pistol grip 908 is provided at the lower end of the installation box 901, a power supply is provided inside the pistol grip 908, and the power supply is connected to the motor 914. A switch key 909, a first gear key 910, a second gear key 911, and a back gear key 912 are provided outside the pistol grip 908, and the switch key 909 is connected to the motor 914 through the power supply, and the first gear key 910, the second gear key 911, and the back gear key 912 are connected to the reducer 915. When the switch key 909 is pressed, the motor 914 is powered on, the injection pressure of the syringe 8 is confirmed, the first gear key 910 or the second gear key 911 is selected, the speed of the reducer 914 is changed, and the injection speed of the syringe 8 is adjusted. When the back gear key 912 is pressed, the screw rod 917 rotates in the opposite direction to drive the clamping seat 902 to move back in the opposite direction, and the syringe 8 sucks out the liquid in the balloon. When the pressure displayed on the pressure gauge is within the threshold range, the back gear key is closed.

[0056] Example 2

[0057] On the basis of Example 1, this embodiment designs a fastener 7 based on the firmness and convenience of connecting the needle 801 of the syringe 8 with the three-way adapter 6, such as Figure 5-8As shown, the fastener 7 includes an outer cylinder 701, one end of the outer cylinder 701 is integrally formed with the liquid inlet 603, an annular groove is arranged on the outer wall of the outer cylinder 701 along its circumferential direction, a rotating ring 703 is arranged in the annular groove, and a plurality of equally spaced slide grooves 7011 are arranged on the inner wall of the outer cylinder 701 along its circumferential direction, the slide grooves 7011 are communicated with the annular groove, a slider 704 is arranged in each slide groove 7011, and the outer end surface of the slider 704 is connected to the inner end surface of the rotating ring 703, One side wall of the slider 704 is hinged to one end of the second support rod 707. A pair of fixing blocks 705 are provided on the inner wall of the outer tube 701 along its circumferential direction. One side wall of the fixing block 705 is hinged to one end of the first support rod 706. The other end of the first support rod 706 and the other end of the second support rod 707 are both hinged to the outer end surface of the arc-shaped clamping plate 708. The needle 801 of the syringe 8 penetrates the outer tube and is inserted into the liquid inlet 603, and the outer wall of the needle 801 is fixed by the arc-shaped clamping plate 708.

[0058] In order to facilitate the rotation of the rotating ring 703 , a circular ring 702 is provided on the outer end surface of the rotating ring 703 along its circumferential direction. A blocking piece 709 is provided on the side wall of the circular ring 702 , and a fixing column 710 matched with the blocking piece 709 is provided on the outer wall of the outer cylinder 701 .

[0059] When fixing, the ring 702 is toggled to pull the slider 704 to slide along the slide groove 7011, and the slider 704 approaches the fixed block 705, and the second support rod 707 and the first support rod 706 approach each other, squeezing the arc-shaped card plate 708 to move toward the center. When the slider 704 moves to the other end of the slide groove 7011, the arc-shaped card plate 708 is squeezed on the outer wall of the needle 801, and the barbs on the inner end surface of the arc-shaped card plate 708 pierce the outer wall of the needle to form a certain gripping force, thereby improving the stability of the fixation of the needle 801. At this time, the baffle 709 on the side wall of the ring 702 rotates to the other end of the fixed column 710. Due to the limitation of the fixed column 710, the ring 702 will not rotate at will. The baffle 709 can be made of elastic steel. When the external force is large, it can be deformed and moved to the other end of the fixed column.

[0060] like Figure 2 As shown in the figure, it is a usage state diagram of this embodiment. Its working principle is: when expanding, the balloon is accurately placed in the stenosis, and a proper amount of liquid is first injected into the outer balloon (the outer balloon is dissolved by 80%, and the outer balloon volume is known). The outer balloon pressure gauge is used to measure the current pressure of the outer balloon expansion (0 ~ xatm (atmospheric pressure)), and then inject liquid into the inner balloon, while testing the pressure of the inner and outer balloons. The pressure on the digestive tract wall = the pressure of the outer balloon during expansion - the pressure of the outer balloon before expansion. The surgeon adjusts the pressure and speed of the liquid injected into the inner balloon according to the local expansion of the digestive tract and the safe pressure (force) that the local area can withstand.

[0061] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent changes made to the above embodiments according to the technical essence of the invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A single-hand-held electric double-balloon digestive tract dilator, characterized in that: The device comprises an outer balloon and an inner balloon, wherein the inner balloon is arranged inside the outer balloon and connected to the inner tube, the outer balloon is connected to one end of the outer tube, the inner tube is located inside the outer tube, the other end of the outer tube is connected to a first branch tube and a second branch tube, the second branch tube extends into the outer tube and communicates with the inner tube, the first branch tube and the second branch tube are connected to a syringe through a three-way adapter, and the syringe is installed on a syringe control mechanism; The inner wall of the inner balloon is provided with an inner patch pressure sensor, the inner wall of the outer balloon is provided with an outer patch pressure sensor, the first branch pipe is provided with an outer balloon pressure gauge, the outer balloon pressure gauge is used to record the pressure value detected by the outer patch pressure sensor, and the second branch pipe is provided with an inner balloon pressure gauge, the inner balloon pressure gauge is used to record the pressure value detected by the inner patch pressure sensor; During expansion, first inject an appropriate amount of liquid into the outer balloon, measure the pressure of the outer balloon before expansion using the outer balloon pressure gauge, then inject liquid into the inner balloon, and detect the pressures of the inner and outer balloons at the same time. The pressure on the wall of the digestive tract = the pressure of the outer balloon during expansion - the pressure of the outer balloon before expansion.

2. A single-hand-held electric double-balloon digestive tract dilator according to claim 1, characterized in that: The three-way adapter includes an adapter block, an adapter cavity is arranged inside the adapter block, an outer bag liquid outlet and an inner bag liquid outlet are arranged at the upper end of the adapter block, a liquid inlet is arranged at the lower end of the adapter block, the outer bag liquid outlet, the inner bag liquid outlet and the liquid inlet are all connected with the adapter cavity, a piston is arranged in the adapter cavity, and a left notch and a right notch which are symmetrical to each other are arranged at both ends of the bottom of the piston, a strip-shaped tooth groove is arranged on the front side of the piston, a groove is arranged at the center of the front side of the adapter block, the groove is connected with the adapter cavity, a gear is arranged in the groove, the gear is arranged on a rotating shaft, both ends of the rotating shaft are rotatably connected with the inner wall of the groove, and the gear is meshed with the tooth groove.

3. The one-hand-held electric double-balloon digestive tract dilator according to claim 2, characterized in that: The piston is located between the outer bag liquid outlet and the inner bag liquid outlet, and the side walls at both ends of the piston are aligned with the inner sides of the outer bag liquid outlet and the inner bag liquid outlet respectively, and the left notch and the right notch are both located at the two ends of the liquid inlet.

4. The one-hand-held electric double-balloon digestive tract dilator according to claim 2, characterized in that: A fastener is also provided between the three-way adapter and the syringe, and the fastener includes an outer cylinder, one end of the outer cylinder is integrally formed with the liquid inlet, an annular groove is provided on the outer wall of the outer cylinder along its circumferential direction, a rotating ring is provided in the annular groove, a plurality of equally spaced sliding grooves are provided on the inner wall of the outer cylinder along its circumferential direction, the sliding grooves are communicated with the annular groove, a sliding block is provided in each sliding groove, the outer end surface of the sliding block is connected to the inner end surface of the rotating ring, a side wall of the sliding block is hinged to one end of the second support rod, and a pair of fixing blocks are also provided on the inner wall of the outer cylinder along its circumferential direction, a side wall of the fixing block is hinged to one end of the first support rod, the other end of the first support rod and the other end of the second support rod are both hinged to the outer end surface of the arc-shaped clamping plate, the needle of the syringe passes through the outer cylinder and is inserted into the liquid inlet, and the outer wall of the needle is fixed by the arc-shaped clamping plate.

5. The one-hand-held electric double-balloon digestive tract dilator according to claim 4, characterized in that: A circular ring is arranged on the outer end surface of the rotating ring along its circumferential direction, a blocking piece is arranged on the side wall of the circular ring, and a fixing column matched with the blocking piece is arranged on the outer wall of the outer cylinder.

6. The one-hand-held electric double-balloon digestive tract dilator according to claim 1, characterized in that: The syringe control mechanism includes a mounting box, a pistol-type handle is provided at the lower end of the mounting box, a mounting groove is provided at the side wall of the mounting box, a clamping plate and a limit block are provided in sequence from near to far inside the mounting groove, the side walls of the clamping plate and the limit block are provided with penetrating arc-shaped clamping grooves along their horizontal directions, an arc-shaped limit plate is provided on the outer end side of the arc-shaped clamping groove of the limit block, a guide hole is provided on the inner end surface of the mounting groove, a clamping seat is provided in the guide hole, one end of the clamping seat extends into the interior of the mounting box and is connected to the transmission assembly, the other end of the clamping seat clamps the pressing part of the piston rod end of the syringe, the injection end of the syringe is clamped in the arc-shaped clamping groove on the clamping plate and the limit block, and a fixing piece is also provided between the clamping plate and the limit block, and the fixing piece fixes the syringe.

7. The one-hand-held electric double-balloon digestive tract dilator according to claim 6, characterized in that: The fixing member includes a positioning block and a mounting block, and the positioning block and the mounting block are symmetrically arranged at the upper and lower ends of the inner wall of the mounting groove. The mounting block is provided with a "convex" type receiving groove, a connecting rod is provided in the receiving groove, a stopper is provided on the inner end surface of the connecting rod, a compression spring is sleeved on the connecting rod, and the compression spring is located in the receiving groove, a fixing plate is provided on the outer end surface of the connecting rod, a fixing protrusion is provided on the upper end of the fixing plate, a positioning hole matching the fixing protrusion is provided on the positioning block, and a rubber gasket is provided on the inner wall of the positioning hole.

8. The one-hand-held electric double-balloon digestive tract dilator according to claim 6, characterized in that: A circular plate is provided at one end of the clamping seat, and a clamping groove is provided along the horizontal direction of the circular plate. An opening is provided on the distal end surface of the circular plate, and the opening is communicated with the clamping groove. The pressing portion of the piston rod is located in the clamping groove, and the piston rod extends from the opening. A limiting groove is provided at the other end of the clamping seat, and a threaded hole is also provided on the clamping seat, and the threaded hole is located between the limiting groove and the circular plate.

9. The one-hand-held electric double-balloon digestive tract dilator according to claim 8, characterized in that: The transmission assembly includes a motor, a screw and a guide rod. A baffle is provided inside the installation box, and the motor and the screw are located on both sides of the baffle. The output shaft of the motor passes through the baffle and is connected to the reducer. The reducer is connected to one end of the screw through a coupling, and the other end of the screw is rotatably connected to the inner end surface of the installation box. One end of the guide rod is connected to the baffle, and the other end is connected to the inner end surface of the installation. The threaded hole on the clamping seat passes through the screw, and the limiting groove on the clamping seat is sleeved on the guide rod. A limiting spring is provided on the guide rod. A power supply is provided inside the pistol handle, and the power supply is connected to the motor. An on / off key, a 1st gear key, a 2nd gear key and an out-of-shift key are provided outside the pistol handle. The on / off key is connected to the motor through the power supply, and the 1st gear key, the 2nd gear key and the out-of-shift key are connected to the reducer.

Images