Blood clot cutting scissors for digestive endoscopy

Abstract

The present invention relates to the technical field of medical devices, and discloses a pair of scissors for cutting blood clots under digestive endoscopy, comprising an insertion tube assembly and a scissors assembly. The insertion tube assembly comprises an outer tube and a circular tube; the circular tube is located inside the outer tube, and the circular tube is fixedly connected to the outer tube. There is a flushing cavity between the circular tube and the outer tube, and there is a suction cavity inside the circular tube. The flushing cavity is connected to a water pump through a connecting tube, and the suction cavity is connected to a negative pressure aspirator through a connecting tube. The scissors assembly comprises a hand-held rod and a blade shaft. The hand-held rod is located on one side of the insertion tube assembly, and the blade shaft is fixedly connected to one side of the hand-held rod. A connecting rod is hinged on the blade shaft, and pull rods are fixedly connected on both sides of the connecting rod, and the pull rods are fixedly connected to a first support plate and a second support plate. The invention has a simple structure, and the design of the flushing cavity can provide a certain buffer before cutting the blood clot, which can avoid problems such as heavy bleeding.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a pair of blood clot cutting scissors for digestive endoscopy. Background Art

[0002] Acute gastrointestinal bleeding is a common complication of digestive system diseases. Esophageal or gastric varicose bleeding caused by decompensated cirrhosis is particularly troublesome and often life-threatening. Therefore, accurate diagnosis and assessment of treatment efficacy are crucial. Increased portal venous pressure in patients with cirrhosis is the primary cause of esophageal and gastric varices. Esophageal and gastric varices are complications of portal hypertension. Diseases that increase portal pressure can be classified into two categories: intrahepatic and extrahepatic. In recent years, the use of sclerosants, tissue adhesives, and ligatures for emergency endoscopic hemostasis has achieved remarkable results both domestically and internationally.

[0003] Varicose veins in the esophagus and gastric fundus bleed violently, forming large clots at the bleeding site. Endoscopy often obscures the field of view and makes it difficult to identify the bleeding site. Therefore, proper clot management is crucial. Aggressive clot management can cause further spurts of bleeding. Existing clot management devices often simply cut or aspirate the clot, which can cause further bleeding. Summary of the Invention

[0004] The present invention aims to provide a pair of scissors for cutting blood clots under digestive endoscopy to solve the problem that the existing technology is simple and direct in handling blood clots (no buffering design is performed before sucking or cutting the blood clot, thus causing heavy bleeding again).

[0005] In order to achieve the above-mentioned purpose, the basic scheme of the present invention is as follows: a pair of blood clot cutting scissors for digestive endoscopy, comprising an insertion tube assembly and a scissors assembly, the insertion tube assembly comprising an outer tube and a circular tube, the circular tube being located inside the outer tube, the circular tube being fixedly connected to the outer tube, a flushing cavity being between the circular tube and the outer tube, a suction cavity being inside the circular tube, a suction hole being provided on the suction cavity, a flushing hole being provided on the flushing cavity, the flushing cavity being connected to a pump assembly via a connecting tube on the side away from the flushing hole, and the suction cavity being connected to a negative pressure aspirator via a connecting tube on the side away from the suction hole.

[0006] The principle of the basic solution is as follows: During operation, the insertion tube assembly is inserted into the gastric tube channel, and then one side of the insertion tube assembly is partially extended from the gastric tube channel. Then, the insertion rod assembly is aligned with the blood clot to be cleaned. Then, driven by the pump assembly and the negative pressure aspirator, the pump assembly sprays saline into the irrigating chamber. The aspiration chamber will generate negative pressure, thereby generating a certain suction force. Under the impact of the saline and the suction force brought by the negative pressure, the blood clot attached to the stomach wall will be pushed away from the stomach wall to a certain extent by the impact of the saline. The adsorption of the negative pressure can also keep the blood clot away from the stomach wall. This will reveal a gap between the blood clot and the stomach wall. The scissors assembly will then aim at the gap to cut the blood clot. After the blood clot is cut, the negative pressure in the aspiration chamber will suck out the blood clot just cut. Then, driven by the pump assembly, the irrigating chamber will inject saline into the stomach to clean the cut blood clot.

[0007] Advantages of the basic solution: Through the design of the flushing cavity, on the one hand, the blood clot can be cut more gently and accurately, thereby avoiding the problem of unclean cutting or heavy bleeding caused by excessive cutting force or incorrect cutting direction; on the other hand, the cut part can be cleaned to avoid affecting the line of sight. The design of the scissors assembly can cut the blood clot more cleanly, and then the design of the suction cavity can clean the cut blood clot in time to avoid interfering with the subsequent cutting of other blood clots.

[0008] Furthermore, the scissors assembly includes a hand-held rod and a blade shaft. The hand-held rod is located on one side of the insertion tube assembly. The blade shaft is fixedly connected to one side of the hand-held rod. The blade shaft extends to the inside of the round tube. A connecting rod is hinged on the blade shaft. Pull rods are fixedly connected on both sides of the connecting rod. The pull rods are fixedly connected to a first support plate and a second support plate. The first support plate and the second support plate are both hinged to the round tube. The first support plate and the second support plate cover part of the round tube and the outer tube. The first support plate is fixedly connected to the first blade block, and the second support plate is fixedly connected to the second support plate. The first blade block and the second blade block are inclined.

[0009] The principle of the basic solution: when it is necessary to cut a blood clot, by pulling the hand-held rod, the blade shaft will be driven to move horizontally, and then the first support plate and the second support plate will be pulled, so that the first support plate and the second support plate will open toward the circular tube under the action of tension, and the first blade block and the second blade block will move closer to each other, thereby achieving shearing of the blood clot.

[0010] Advantages of the basic solution: The blood clot can be cut directly by pulling the handheld rod, which is simple and convenient to operate. The blood clot after cutting will be smaller in size, which can avoid the problem of clogging the inside of the round tube to a certain extent and is easy to be sucked out.

[0011] Furthermore, a plurality of blades are provided on the blade shaft.

[0012] The principle of the basic solution: After the blood clot is sheared, it will be sucked into the circular tube under the influence of negative pressure. Then, when the blood clot flows in the circular tube, it will be cut by the blade and crushed.

[0013] Advantages of the basic solution: Through the design of the blade, on the one hand, the blood clot is easier to be sucked out after being cut into pieces, and on the other hand, it can prevent the blood clot from clogging the circular tube, thereby affecting subsequent operations.

[0014] Furthermore, the second blade block is provided with a plurality of blade posts at intervals in the transverse direction, and a notch is provided between two adjacent blade posts.

[0015] The principle of the basic solution: when cutting blood clots, they can be cut into smaller pieces.

[0016] Advantages of the basic approach: Easier subsequent clot aspiration and clot cutting.

[0017] Furthermore, a plurality of springs are provided on the hand-held rod, and the plurality of springs are fixedly connected to the outer tube.

[0018] The principle of the basic solution is: when the hand-held rod is not pulled, the spring is in a contracted state. When the hand-held rod needs to be pulled to cut the blood clot, the spring extends. Then, when the blood clot does not need to be cut, the hand-held rod can return to its original position under the tension of the spring.

[0019] Advantages of the basic solution: Under the tension of the spring, the handle can return to its original position in time, which can avoid repeated operations to a certain extent and save a certain amount of time.

[0020] Furthermore, a slide rail is provided on one side of the hand-held rod close to the insertion tube, a sliding block is fixedly connected to the spring, and the hand-held rod and the spring are rotatably connected through the slide rail and the sliding block.

[0021] The principle of the basic solution: After the blood clot enters the round tube, the blade shaft can be driven to rotate by rotating the handheld rod, thereby driving the blade to rotate, thereby more fully cutting and crushing the blood clot.

[0022] Advantages of the basic solution: By rotating the blade, the blood clot can be cut more thoroughly.

[0023] Furthermore, an anti-slip cover is provided on the hand-held rod.

[0024] The principle of the basic solution: the design of the anti-slip sleeve can increase friction.

[0025] Advantages of the basic solution: When the hand-held rod is pulled, the design of the anti-slip sleeve can have a certain anti-slip effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a top sectional view of the blood clot cutting scissors for digestive endoscopy in an embodiment of the present invention.

[0027] Figure 2 It is a side view of the blood clot cutting scissors for digestive endoscopy in an embodiment of the present invention.

[0028] Figure 3 This is a side view of the handheld handle of the digestive endoscopy blood clot cutting scissors in an embodiment of the present invention.

[0029] Figure 4 This is a front view of the spring of the blood clot cutting scissors under digestive endoscopy in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The following is further described in detail through specific implementation methods:

[0031] The figure marks in the drawings of the specification include: outer tube 1, round tube 2, hand-held rod 3, blade shaft 4, blade 5, connecting rod 6, pulling rod 7, first blade block 8, flushing chamber 9, suction chamber 10, second support plate 11, first support plate 12, slide rail 13, sliding block 14, spring 15, negative pressure suction device 16, pump assembly 18, second blade block 19.

[0032] The embodiment is basically as shown in the attached Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown: Digestive endoscopy blood clot cutting scissors, including an insertion tube assembly and a scissors assembly. The insertion tube assembly includes an outer tube 1 and a circular tube 2. The circular tube 2 is located inside the outer tube 1 and is fixedly connected to the outer tube 1. The circular tube 2 and the outer tube 1 are separated by a flushing cavity 9. The circular tube 2 is a suction cavity 10. The suction cavity 10 is provided with a suction hole. The flushing cavity 9 is provided with a flushing hole. The flushing cavity 9 is connected to a pump assembly 18 via a connecting tube on the side away from the flushing hole. Specifically, the pump assembly 18 is a water pump. The suction cavity 10 is connected to a negative pressure aspirator 16 via a connecting tube on the side away from the suction hole.

[0033] The scissors assembly includes a hand-held rod 3 and a blade shaft 4. The hand-held rod 3 is located on one side of the insertion tube assembly. The blade shaft 4 is fixedly connected to one side of the hand-held rod 3. Several blades 5 are provided on the blade shaft 4. The blade shaft 4 extends to the inside of the circular tube 2. Several springs 15 and anti-slip sleeves are provided on the hand-held rod 3. Several springs 15 are fixedly connected to the outer tube 1. A sliding block 14 is fixedly connected to the spring 15. A slide rail 13 is provided on the side of the hand-held rod 3 close to the spring 15. The hand-held rod 3 and the spring 15 are rotatably connected through the slide rail 13 and the sliding block 14.

[0034] A connecting rod 6 is hinged on the blade shaft 4, and a pulling rod 7 is fixedly connected on both sides of the connecting rod 6. The pulling rod 7 is fixedly connected to the first support plate 12 and the second support plate 11. The first support plate 12 and the second support plate 11 are both hinged to the circular tube 2. The first support plate 12 and the second support plate 11 cover part of the circular tube 2 and the outer tube 1. The first support plate 12 is fixedly connected to the first blade block 8, and the second support plate 11 is fixedly connected to the second blade block 19. The first blade block 8 and the second blade block 19 are inclined, and the second blade block 19 is provided with a plurality of blade columns at intervals along the horizontal direction, and a notch is provided between adjacent blade columns.

[0035] The specific implementation process is as follows: during operation, the insertion tube assembly is inserted into the gastric tube passage, and then one side of the insertion tube assembly is partially extended out of the gastric tube passage, and then the insertion rod assembly is aligned with the gap between the blood clot and the stomach wall. Then, under the drive of the pump assembly 18 and the negative pressure aspirator 16, the pump assembly 18 sprays physiological saline into the flushing chamber 9, and the suction chamber 10 will generate negative pressure, thereby generating a certain suction force. Under the impact of the physiological saline and the suction force brought by the negative pressure, the blood clot attached to the stomach wall will be pushed away from the stomach wall to a certain extent by the impact of the physiological saline. The absorption of the negative pressure can also move the blood clot away from the stomach wall, so that a part of the gap between the blood clot and the stomach wall is exposed. Then, by pulling the handheld rod 3, the blade shaft 4 will be driven to move horizontally, and then the first support plate 12 and the second support plate 11 will be pulled, so that the first support plate 12 and the second support plate 11 will be opened towards the circular tube 2 under the action of the pulling force, and the first blade block 8 and the second blade block 19 will move closer to each other, thereby shearing the blood clot.

[0036] After the blood clot is cut, the negative pressure within the suction chamber 10 draws the cut blood clot into the circular tube 2. Rotating the handheld lever 3 drives the blade shaft 4, which in turn drives the blade 5 to rotate, further effectively cutting and crushing the blood clot. The cut blood clot is smaller in size, which to some extent prevents it from clogging the interior of the circular tube 2 and makes it easier to remove. After cutting, the handheld lever 3 returns to its original position under the tension of the spring 15. Then, the flushing chamber 9, driven by the pump assembly 18, injects physiological saline into the stomach, thereby clearing the cut blood clot.

[0037] The design of the flushing chamber 9 allows for a more gentle and accurate cutting of the blood clot, thereby avoiding problems such as incomplete cutting or excessive bleeding caused by excessive force or incorrect cutting direction. Furthermore, the cut area can be cleaned to avoid obstructing vision. The design of the scissor assembly allows for a more clean cutting of the blood clot, and the design of the suction chamber 10 allows for timely cleaning of the cut blood clot to avoid interference with subsequent cutting of other blood clots.

[0038] The above is only an embodiment of the present invention, and common knowledge such as the specific structure and / or characteristics of the scheme is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. Blood clot cutting scissors for digestive endoscopy, characterized by: The utility model comprises an insertion tube assembly and a scissors assembly, wherein the insertion tube assembly comprises an outer tube and a circular tube, wherein the circular tube is located inside the outer tube and is fixedly connected to the outer tube, wherein a flushing cavity is formed between the circular tube and the outer tube, wherein a suction cavity is formed inside the circular tube, wherein a suction hole is provided on the suction cavity, and wherein a flushing hole is provided on the flushing cavity, wherein the side of the flushing cavity away from the flushing hole is connected to a pump assembly through a connecting tube, and the side of the suction cavity away from the suction hole is connected to a negative pressure aspirator through a connecting tube; The scissors assembly includes a hand-held rod and a blade shaft, the hand-held rod is located on one side of the insertion tube assembly, the blade shaft is fixedly connected to one side of the hand-held rod, the blade shaft extends into the inside of the round tube, a connecting rod is hinged on the blade shaft, and pull rods are fixedly connected on both sides of the connecting rod, and the pull rods are fixedly connected to a first support plate and a second support plate, the first support plate and the second support plate are both hinged to the round tube, the first support plate and the second support plate cover part of the outer tube, the first support plate is fixedly connected to the first blade block, the second support plate is fixedly connected to the second blade block, and the first blade block and the second blade block are inclined; The blade shaft is provided with a plurality of blades; the hand-held rod is provided with a plurality of springs, and the plurality of springs are fixedly connected to the outer tube; A slide rail is provided on one side of the hand-held rod close to the insertion tube, a slide block is fixedly connected to the spring, and the hand-held rod and the spring are rotatably connected through the slide rail and the slide block.

2. The digestive endoscopy blood clot cutting scissors according to claim 1, characterized in that: The second blade block is provided with a plurality of blade posts at intervals in the transverse direction, and a notch is provided between two adjacent blade posts.

3. The digestive endoscopy blood clot cutting scissors according to claim 1, characterized in that: An anti-slip sleeve is provided on the hand-held rod.

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