Stomach blood clot removing device for gastroscope

Abstract

A soft sealing cover is connected to the head end of a gastroscope cannula in a sleeving mode, the tail end of the sealing cover is in a cylindrical shape, the whole head end of the sealing cover is of a sealed bowl-shaped structure and is composed of two parts which are separated and symmetrically arranged, and when the head ends of the sealing cover are oppositely attached, a closed cavity is formed; when being turned outwards in the opposite direction, the gastroscope sleeve is attached; a metal sheet is arranged on the inner wall of one side of the sealing cover, a gear motor is fixed to the metal sheet, the output end of the gear motor is connected with a threaded rod, the two sides of the threaded rod are meshed with two gears respectively, another metal sheet is arranged on the surface of the other side of the gear motor, and the gears are movably connected between the two metal sheets through pins. A metal rod is fixed to the side wall of the gear, the end of the metal rod is sleeved with a soft sleeve, and the other end of the sleeve is connected with the inner wall of the head end of the sealing cover. The blood clots can be covered conveniently so that the blood clots can be degraded and removed, mirror retreating is not needed after the blood clots are removed and wounds are exposed, and further operation under an endoscope is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of blood clot removal, and particularly to a device for removing gastric blood clots for a gastroscope. Background Art

[0002] Acute upper gastrointestinal bleeding is a critical and severe disease in the department of gastroenterology. In most cases of gastrointestinal bleeding, gastroscopy is required to clarify the cause of bleeding and endoscopic treatment is carried out. However, in clinical work, in patients with gastrointestinal bleeding, especially those with acute bleeding, a large amount of blood clots will accumulate in the stomach, with viscous blood or even bean curd-like coagulated substances. In this case, it is very difficult for the suction tube of the gastroscope to suck these substances clean, and at the same time, it is very easy to block the tube. At the same time, other instruments are borrowed to clamp the blood clots and viscous blood, repeatedly entering and exiting the stomach, prolonging the operation time and increasing the intraoperative risk.

[0003] Many new patents and related inventions have proposed solutions to this problem, but they all tend to physically break or grind the blood clots or viscous substances and then suck them in. However, it is actually very difficult to apply them clinically. On the one hand, the gastric wall of patients with gastric bleeding itself has diseases, and rebleeding will be quickly induced under physical vibration and grinding. On the other hand, if this kind of probe contacts the gastric wall, it will directly damage the gastric mucosa, and this kind of device often has a complex structure and large components, and other operations cannot be carried out while sucking the blood clots. When removing blood clots, if biological methods are directly used for blood clot absorption, such as using thrombolytic drugs for various thrombi such as streptokinase and urokinase for cerebral thrombosis and pulmonary thrombosis, the blood clots can be effectively degraded, but this will cause continuous bleeding of the gastric wound. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a device for removing gastric blood clots for a gastroscope, which is directly installed at the front end of the gastroscope and can quickly perform endoscopic operations without retracting the gastroscope after removing the blood clots and exposing the wound.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A device for removing gastric blood clots for a gastroscope, including a gastroscope sleeve, the head end of the gastroscope sleeve is sleeved with a soft sealing cover, the tail end of the sealing cover is cylindrical, and the head end is integrally in a sealed bowl-shaped structure, which is composed of two symmetrically arranged and separated parts. When the head ends of the sealing covers are relatively attached, a sealed cavity is formed, and when they are turned outwards, they are attached to the gastroscope sleeve.

[0006] A first metal sheet is arranged on the inner wall of one side of the sealing cover, a reduction motor is fixed on the first metal sheet, the output end of the reduction motor is connected with a threaded rod, gears are respectively arranged on both sides of the threaded rod, a second metal sheet is arranged on the other side of the reduction motor, and the gears are movably connected between the first metal sheet and the second metal sheet through pins, and the gears are meshed with the threaded rod.

[0007] A metal rod is fixed on the side wall of the gear. A soft sleeve is sleeved at the end of the metal rod, and the other end of the sleeve is connected to the inner wall of the head end of the sealing cover.

[0008] It also includes a power supply chip, a driving chip for driving the reduction motor to rotate, a repeater for processing chip signals, and an operating handle. The driving chip, the power supply chip, and the repeater are all arranged at the operating end. The reduction motor is connected with an external wire, and the other end of the external wire is electrically connected to the control end.

[0009] Furthermore, the sealing cover is made of a recoverable soft rubber material, and its edge part is thickened.

[0010] Furthermore, the sleeve and the sealing cover are made of the same material.

[0011] Among them, the thickness of the tail end of the sealing cover is greater than that of its head end.

[0012] Compared with the prior art, the present invention provides a device for removing gastric blood clots for a gastroscope, having the following beneficial effects: The present invention is directly installed at the front end of the gastroscope. The start of the reduction motor is controlled by the operating handle, which drives the threaded rod to rotate. Since the threaded rod is meshed and connected with the gear, the gear rotates according to the rotation of the threaded rod, so that the sealing cover is completely turned outwards to fit with the gastroscope sleeve and enters the patient's stomach together with the gastroscope sleeve. When it is necessary to clean the blood clots in the patient's stomach, the reduction motor can be started to drive the sealing cover to close. Since the sealing outer claw is made of a recoverable soft rubber material, it allows deformation to directly wrap the blood clots and other contents, which is convenient for the subsequent operation of removing blood clots and degrades the blood clots; after the blood clots are removed, washed repeatedly and the wound is exposed, the gastroscope does not need to be withdrawn. The reduction motor is started to drive the sealing cover to be completely turned outwards, leaving the front view and the operation hole of the gastroscope to continue the hemostasis operation, with a relatively low intraoperative bleeding risk.

[0013] The structure of the head end of the gastroscope sleeve is simple. The driving chip, the power supply chip, etc. are all arranged at the distal operating end, and the reduction motor is electrically connected to the control end through an external wire, reducing the load at the head end of the gastroscope sleeve. Description of the Drawings

[0014] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the internal structure of the closed inner cavity of the present invention; Figure 3 is Figure 2 an enlarged schematic diagram of the structure at A in Figure 4 is a circuit connection framework diagram of the reduction motor working.

[0015] Wherein: 1. Gastroscope sleeve; 2. Sealing cover; 3. Reducing motor; 4. Threaded rod; 5. Gear; 6. Pin; 7. Metal rod; 8. Hose; 9. First metal sheet; 10. External wiring. Specific implementation mode

[0016] 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 work shall fall within the protection scope of the present invention.

[0017] Please refer to Figures 1-3 , a gastric blood clot removal device for a gastroscope, including a gastroscope sleeve 1, a soft sealing cover 2 is sleeved at the head end of the gastroscope sleeve 1. The tail end of the sealing cover 2 is cylindrical, and the head end is integrally in the shape of a sealed bowl, which is composed of two symmetrically arranged and separated parts. When the head ends of the two sealing covers 2 are relatively fitted, a sealed cavity is formed. When turned outwards, it fits the gastroscope sleeve. The sealing cover 2 is made of a recoverable soft rubber material, and transparent silica gel can be selected but not limited to. The edge part thereof is thickened. Preferably, the surface of the thickened edge is covered with a biocompatible coating, such as polytetrafluoroethylene, to reduce friction when contacting the gastric wall. When the head ends of the two sealing covers 2 are relatively fitted, a sealed cavity is formed to wrap the blood clot. When turned outwards, it fits the gastroscope sleeve 1 to reduce the passing surface when the device enters the stomach.

[0018] To ensure the firmness and stability of the connection between the tail end of the sealing cover 3 and the gastroscope sleeve 1, the thickness of the tail end of the sealing cover 2 is greater than that of its head end, or threads are provided inside the tail end of the sealing cover 2 to increase the friction coefficient.

[0019] A first metal sheet 9 is provided on the inner wall of the sealing cover 2. A reducing motor 3 is fixed on the first metal sheet 9. Among them, a micro harmonic reducing motor is preferably selected for the reducing motor to improve the torque density and service life. A waterproof rubber sleeve is sleeved on the reducing motor 3. The output end of the reducing motor 3 is connected with a threaded rod 4. Gears 5 are respectively arranged on both sides of the threaded rod 4. A second metal sheet is arranged on the other side of the reducing motor 3. The gear 5 is movably connected to the first metal sheet 9 and the second metal sheet (not shown in the figure) through a pin 6. The gear 5 is meshed and connected with the threaded rod 4.

[0020] A metal rod 7 is fixed on the side wall of the gear 5. Specifically, a hole is drilled in the side wall of the gear 5, the metal rod 7 is inserted into the hole and reinforced with colloid. A soft sleeve 8 is sleeved at the end of the metal rod 7, and the other end of the sleeve 8 is connected to the inner wall of the head end of the sealing cover 2; further, the sleeve 8 and the sealing cover 2 are made of the same material to ensure the flexibility of the sealing cover 2 to turn outwards or reset. The metal rod 7 and the soft sleeve 8 are both used to assist the turning outwards and buckling actions of the sealing cover 2.

[0021] As Figure 4 shown, it also includes a power chip, a driving chip for driving the reduction motor 3 to rotate, a repeater for processing chip signals, and an operating handle. The driving chip, the power chip, and the repeater are all arranged at the operating end to reduce the load at the head end of the gastroscope. Specifically, the reduction motor 3 is connected to an external wire 10, the other end of the external wire 10 is electrically connected to the driving chip, the driving chip is electrically connected to the power chip, the driving chip is electrically connected to the operating handle. The repeater is preferably a Bluetooth decoding controller, and the operating handle is preferably a 2.4G remote control, both of which comply with the electromagnetic compatibility (EMC) standard of medical devices. The driving chip can be an integrated one-way bidirectional brushless electronic speed controller of model BK-24011 and has an overcurrent protection function; according to the bleeding position in the patient's stomach, the operating handle operates, and the control chip in the operating handle generates control signals (PWM and direction), and transmits the signals to the driving chip through the repeater, and then drives the reduction motor 3 to drive the sealing cover 2 to deform.

[0022] When the two sealing covers 2 are in contact with each other, an internal cavity can be formed. After the head end of the gastroscope tube 1 is placed at a designated position, using the internal cavity of the two sealing covers 2, the blood clots or viscous blood in the patient's stomach are covered. Through the flushing hole of the gastroscope tube 1, the blood clot dissolving enzyme can be directly injected into the sealed cavity to dilute and dissolve the blood clots, and then the blood clots in the sealed cavity are extracted and removed by the suction tube. When the blood clots are extracted and repeatedly cleared, the reduction motor 3 can be started to drive the sealing cover 2 to turn outwards completely, leaving the front view and the operation hole of the gastroscope for continuous hemostasis operation.

[0023] In use, first, turn the two sealing covers 2 outwards. The reduction motor 3 rotates to drive the threaded rod 4 to rotate. Since the threaded rod 4 is meshed with the gear 5 and the gear 5 is rotatably connected to the first metal sheet 9, the gear 5 rotates, and the metal rod 7 rotates, thereby driving the sealing cover 2 to turn outwards completely and enter the patient's stomach together with the gastroscope cannula 1. When the head end of the gastroscope cannula 1 reaches the designated position, the control end drives the reduction motor 3 to rotate in the reverse direction, and the two sealing covers 2 move relatively to the fitting state to form a sealed cavity. The cavities inside the two sealing covers 2 cover the blood clots or viscous blood in the patient's stomach. The lysing enzyme can be directly injected into the sealed cavity through the flushing hole of the gastroscope cannula 1 to repeatedly flush the blood clots or viscous blood in the patient's stomach. Then, the blood clots in the sealed cavity are extracted and removed by the suction tube. After the blood clots are extracted and removed, the control end drives the reduction motor 3 to rotate in the reverse direction, and the sealing cover 2 is turned outwards completely again, and the surgical field of view is exposed, and the hemostasis operation can be continued.

[0024] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gastroscopic blood clot removal device, comprising a gastroscopic sleeve (1), characterized in that: The head end of the gastroscope sleeve (1) is sleeved with a soft sealing cover (2); the tail end of the sealing cover (2) is cylindrical, and the head end is a sealed bowl-shaped structure, which is composed of two symmetrically separated parts. When the head ends of the sealing cover (2) are relatively fitted, a closed cavity is formed, and when they are turned outward, they fit the gastroscope sleeve; A first metal sheet (9) is provided on the inner wall of one side of the sealing cover (2), a reduction motor (3) is fixed on the first metal sheet (9), an output end of the reduction motor (3) is connected to a threaded rod (4), gears (5) are provided on both sides of the threaded rod (4), and a second metal sheet is provided on the other side of the reduction motor (3), the gear (5) is movably connected between the first metal sheet (9) and the second metal sheet through a pin (6), and the gear (5) is meshingly connected with the threaded rod (4); A metal rod (7) is fixed on the side wall of the gear (5), the end of the metal rod (7) is sleeved with a soft sleeve (8), and the other end of the sleeve (8) is connected to the front inner wall of the sealing cover (2).

2. The gastroscopic blood clot removal device according to claim 1, characterized in that It also includes a power chip, a drive chip for driving the reduction motor (3) to rotate, a relay for processing control signals, and an operating handle. The drive chip and the power chip are both arranged at the operating end. The reduction motor (3) is connected to an external wire (10). The other end of the external wire (10) is electrically connected to the drive chip. The drive chip is electrically connected to the power chip, the relay, and the operating handle.

3. The gastric blood clot removal device for gastroscopy according to claim 1, characterized in that: The sealing cover (2) is made of a reversible soft rubber material, and its edge portion is thickened.

4. The gastric blood clot removal device for gastroscopy according to claim 1, characterized in that: The sleeve (8) and the sealing cover (2) are made of the same material.

5. The gastric blood clot removal device for gastroscopy according to claim 1, characterized in that: The thickness of the rear end of the sealing cover (2) is greater than the thickness of the front end thereof.

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