Cannula instrument for assisting gastroscope operation

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a cannula instrument for assisting gastroscope operation. The device is mainly used for being placed into a human body along with the gastroscope so that the gastroscope can repeatedly enter and exit from the human body. The cannula is provided with a far end and a near end, the far end enters a human body along with a gastroscope, and the near end is located outside the human body all the time; the balloon is arranged on the outer wall of the cannula, and the balloon is close to the far end; wherein the balloon has an expansion state and a contraction state, and the balloon is constructed to be capable of being switched between the expansion state and the contraction state; wherein the balloon can fix the far end in the body of a patient in an expanded state; mainly solves the problems that in the operation process, a gastroscope repeatedly enters and exits a human body, so that the pharyngeal tissue mucosa of a patient is damaged, and in the repeated entering and exiting process of the gastroscope, part of stomach sour enters the pharynx, so that the stomach sour enters the lung of the patient, and the lung of the patient is damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and in particular relates to a sleeve instrument for assisting gastroscopy operation. Background Art

[0002] During the process of gastrointestinal endoscopic surgery, the gastroscope needs to be inserted into the patient's mouth, through the patient's pharynx-esophagus, and finally into the stomach. However, during the operation, the patient's body secretions, oils, etc. are easy to adhere to the lens of the gastroscope, resulting in blurred endoscopic field of view. The gastroscope needs to be removed from the patient's body, and after wiping the lens, it is inserted into the human body again. Therefore, during the operation, the gastroscope needs to repeatedly enter and exit the human body, causing damage to the patient's pharyngeal mucosa and increased postoperative discomfort. Furthermore, in the process of repeated entry and exit of the gastroscope, some gastric acid will be carried into the patient's pharynx, increasing the risk of aspiration, and further causing damage to the patient's lungs.

[0003] In view of the above problems, the utility model provides a sleeve instrument for assisting gastroscopy operation. Utility Model Content

[0004] In order to overcome the problems raised in the background technology, the utility model adopts the following technical solutions:

[0005] A sleeve instrument for assisting gastroscopy operation, comprising:

[0006] The cannula has a distal end and a proximal end, wherein the distal end enters the human body along with the gastroscope, and the proximal end is always located outside the human body;

[0007] A balloon is disposed on the outer wall of the sleeve, the balloon being close to the distal end; wherein the balloon has an expanded state and a contracted state, and the balloon is configured to be switchable between the expanded state and the contracted state;

[0008] Wherein, the balloon can fix the distal end in the patient's body in the expanded state.

[0009] In some embodiments of the present application, the sleeve further has a connecting tube; wherein the connecting tube has a first end and a second end, the first end is connected to the balloon, and the second end extends out from the proximal end / near the proximal end of the sleeve.

[0010] Further, the second end comprises:

[0011] A connector having a first chamber and a second chamber, wherein the first chamber is connected to the connecting pipe, and the second chamber has a channel, wherein the first chamber and the second chamber are connected to each other;

[0012] a one-way valve disposed in the first chamber, wherein the one-way valve is configured to allow flow from the second chamber to the first chamber;

[0013] A release member is disposed in the second chamber, and is configured to be movable in the second chamber toward the first chamber, and partially extend into the first chamber to act on the one-way valve, so that the one-way valve is pushed open.

[0014] Furthermore, the release member is composed of a hollow plate and a round rod; wherein the round rod and the hollow plate are concentric; when the hollow plate moves toward the first chamber, part of the round rod extends into the first chamber.

[0015] In some embodiments of the present application, the balloon is constructed as one of an air balloon and a water balloon.

[0016] Furthermore, the balloon is made of one of nylon, latex, silicone, PET, and POC materials.

[0017] In some embodiments of the present application, the sleeve comprises:

[0018] A hard tube, wherein the proximal end is one end of the hard tube;

[0019] The soft tube, the distal end is one end of the soft tube, and the balloon is arranged on the outer wall of the soft tube; wherein the soft tube and the hard tube are connected to each other.

[0020] Furthermore, the inner walls of the hard tube and the soft tube are covered with a hydrophilic coating.

[0021] Furthermore, the hard tube also has a mouth pad, wherein the mouth pad is sleeved on the outer wall of the hard tube.

[0022] In an embodiment of the present application, the distal end has a starting end and an ending end, wherein the diameter of the distal end decreases step by step from the starting end to the ending end.

[0023] Beneficial effects of the utility model:

[0024] 1. A sleeve and a balloon are arranged on the outer wall of the sleeve. When in use, the sleeve is sleeved on the outer wall of the gastroscope so that the sleeve enters the patient's esophagus along with the gastroscope; and the sleeve is fixed in the patient's esophagus by the balloon; when the gastroscope needs to be withdrawn from the patient's body and its lens is wiped, the gastroscope can be withdrawn through the sleeve, thereby preventing the gastroscope from carrying part of the gastric acid reflux into the patient's pharynx, and preventing the surface of the gastroscope from damaging the patient's pharyngeal mucosa when the gastroscope repeatedly enters and exits the patient's body.

[0025] 2. By providing a mouth pad on the hard tube of the cannula, if the patient bites unconsciously during the use of the gastroscope, damage to the gastroscope can be avoided, thereby extending the service life of the instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the casing structure of the utility model;

[0028] Figure 3 This is a schematic diagram of the position structure of the mouth pad of the utility model;

[0029] Figure 4 This is a schematic diagram of the balloon position structure of the utility model;

[0030] Figure 5 This is a schematic diagram of the internal structure of the second end of the connecting pipe of the utility model;

[0031] Figure 6 This is a schematic diagram of the internal structure of the connector of the utility model;

[0032] Figure 7 This is a schematic diagram of the structure of the connector externally connected to the syringe of the utility model;

[0033] Figure 8 This is a schematic diagram of the structure of the one-way valve of the utility model after being pushed open;

[0034] In the figure, 1, sleeve; 11, distal end; 12, proximal end; 13, hard tube; 131, mouth pad; 14, soft tube; 15, connecting tube; 153, connecting head; 1531, first chamber; 1532, second chamber; 154, one-way valve; 155, release piece; 1551, hollow plate; 1552, round rod; 16, balloon. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the utility model are clearly and completely described below through specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Those skilled in the art can easily understand other advantages and functions of the utility model from the contents disclosed in this specification. The utility model can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] Figure 1The main technical content of this embodiment is shown. This specific embodiment provides a sleeve 1 device for assisting gastroscopy operation, which includes:

[0037] The sleeve 1 has a distal end 11 and a proximal end 12, wherein the distal end 11 is inserted into the human body along with the gastroscope, and the proximal end 12 is always located outside the human body;

[0038] The balloon 16 is disposed on the outer wall of the sleeve 1, and the balloon 16 is close to the distal end 11; wherein the balloon 16 has an expanded state and a contracted state, and the balloon 16 is constructed to be able to switch between the expanded state and the contracted state;

[0039] The balloon 16 can fix the distal end 11 in the patient's body in the expanded state.

[0040] refer to Figure 1 —2. In the present embodiment, the sleeve 1 comprises: a hard tube 13 and a soft tube 14; the proximal end 12 is one end of the hard tube 13; the distal end 11 is one end of the soft tube 14, and the balloon 16 is arranged on the outer wall of the soft tube 14; wherein the soft tube 14 and the hard tube 13 are connected with each other; when in use, the tip of the gastroscope extends from the proximal end 12 into the sleeve 1, and then the doctor inserts the gastroscope and the sleeve 1 into the esophagus through the pharynx of the patient, wherein the hard tube 13 is located in the oral cavity of the patient, and most of the soft tube 14 is located in the esophagus of the patient.

[0041] More specifically, the hard tube 13 and the soft tube 14 are fixedly connected; wherein, the hard tube 13 can be made of materials such as polyvinyl chloride, polyethylene, polypropylene, etc., and the soft tube 14 can also be made of polyvinyl chloride, or made of one of rubber and silicone. When in use, the hard tube 13 can play a supporting role. When the patient bites, the hard tube 13 will not be deformed, thereby avoiding the gastroscope from being squeezed and damaged; the soft tube 14 can bend with the gastroscope to improve the passability and be inserted into the patient's body.

[0042] More specifically, the inner wall and the outer wall of the cannula 1 are covered with a hydrophilic coating to improve the permeability of the cannula 1 when it is inserted into the human body.

[0043] refer to Figure 2—3, more preferably, a mouth pad 131 is provided to be sleeved on the outer wall of the hard tube 13; wherein the position of the mouth pad 131 on the hard tube 13 can be adjusted. When in use, the mouth pad 131 is adjusted to an applicable position according to the depth of the patient's oral cavity to correspond to the patient's teeth. In addition, the balloon 16 is converted into an expanded state in the patient's esophagus, so that one end of the soft tube 14 is fixed to prevent the hard tube 13 from being pushed too much into the patient's body. When the patient bites, the mouth pad 131 supports the hard tube 13 to prevent the hard tube 13 from being deformed, thereby achieving the purpose of protecting the gastroscope. Alternatively, the mouth pad 131 is fixed to the outer wall of the hard tube 13 and is close to the proximal end 12; wherein the mouth pad 131 and the hard tube 13 can be fixed by bonding, wherein the hard tube 13 is provided with different length specifications; when in use, according to needs, a sleeve 1 with an applicable length of the hard tube 13 is selected to protect the gastroscope from being damaged due to the patient's bite during use.

[0044] refer to Figure 1 More preferably, the distal end 11 of the sleeve 1 has a starting end and an end end, wherein the diameter of the distal end 11 is gradually reduced from the starting end to the end end, so that the distal end 11 forms an arc-shaped outer wall, thereby making the distal end 11 more attached to the outer wall of the gastroscope; thereby, when in use, the sleeve 1 can follow the gastroscope and enter the patient's body more easily; avoiding a large distance difference between the distal end 11 of the sleeve 1 and the front end of the gastroscope after the gastroscope enters the patient's body.

[0045] refer to Figure 2 and Figure 4 —5. In the present embodiment, a connecting tube 15 is provided in the sleeve 1, wherein the connecting tube 15 has a first end and a second end, the first end is connected to the balloon 16, and the second end extends from the proximal end 12 / near the proximal end 12 of the sleeve 1. When in use, a syringe containing air / inert gas or sterile saline is externally connected to the second end of the connecting tube 15, and gas or liquid is injected into the balloon 16 to convert the balloon 16 from a contracted state to an expanded state; in the expanded state, the balloon 16 acts on the esophageal wall of the patient, thereby fixing the distal end 11 of the sleeve 1 in the esophagus of the patient; thereby preventing the sleeve 1 from shifting in the esophagus of the patient when the gastroscope repeatedly enters and exits the sleeve 1.

[0046] refer to Figure 4—6, in this embodiment, the second end includes: a connector 153, a one-way valve 154, and a release member 155; the connector 153 has a first chamber 1531 and a second chamber 1532, wherein the first chamber 1531 is connected to the connecting tube 15, and the second chamber 1532 has a channel, wherein the first chamber 1531 and the second chamber 1532 are connected to each other; when in use, a syringe containing air / inert gas or sterile saline is connected to the channel, wherein the length of the channel is configured so that after the syringe is inserted, the head of the syringe can penetrate into the second chamber 1532; the one-way valve 154 is configured in the first chamber 1531, wherein the one-way valve 154 is configured to allow the second chamber 1532 to flow in the direction of the first chamber 1531; when the gas or liquid is pushed into the first cavity by the syringe, under the action of positive pressure, the one-way valve 154 is pushed open, thereby allowing the gas or liquid to enter through the first cavity and the connecting tube 15 and enter to The balloon 16 is in the balloon 16; thereby, the balloon 16 can be converted from a contracted state to an expanded state; the release member 155 is arranged in the second chamber 1532, and the release member 155 is configured to be able to move in the second chamber 1532 toward the first chamber 1531; and partially extends into the first chamber 1531 to act on the one-way valve 154, so that the one-way valve 154 is pushed open, and when the sleeve 1 needs to be removed from the patient's esophagus, the syringe is connected to the outside through the hole again; at this time, the syringe is inserted The release member 155 moves in the second chamber 1532 toward the first chamber 1531 and partially enters the first chamber 1531, thereby pushing open the one-way valve 154. At this time, the gas or liquid in the balloon 16 can be extracted through the connecting tube 15 by using a syringe, thereby converting the balloon 16 from an expanded state to a contracted state. Then, the doctor removes the sleeve 1 from the patient's esophagus.

[0047] refer to Figure 5 —8, more specifically, the release member 155 includes: a hollow plate 1551 and a round rod 1552, wherein the edge of the hollow plate 1551 is circular, wherein the round rod 1552 is concentric with the hollow plate 1551, and more specifically, the diameter of the round rod 1552 can penetrate into the first chamber 1531, so that when the hollow plate 1551 moves toward the first chamber 1531, the round rod 1552 partially extends into the first chamber 1531, thereby the one-way The valve 154 is pushed open. When in use, a syringe containing air or liquid is connected to the outside through the channel. After the syringe is inserted into the second chamber 1532, it abuts against the hollow plate 1551, so that the hollow plate 1551 moves toward the first chamber 1531. At this time, a section of the round rod 1552 extends into the first chamber 1531, thereby pushing the one-way valve 154 open. At this time, gas or liquid can be injected into the balloon 16 through the first chamber 1531 and the connecting tube 15.

[0048] In the present embodiment, the balloon 16 is constructed as one of a balloon 16 and a water balloon. More specifically, the balloon 16 is made of one of nylon, latex, silicone, PET, and POC materials.

[0049] The use of the utility model:

[0050] 1. Insert the gastroscope from the proximal end into the cannula until the tip of the gastroscope extends out of the distal end of the cannula. Under the guidance of the gastroscope lens, the cannula is inserted into the patient's pharynx and into the patient's esophagus until it reaches a suitable position.

[0051] 2. Connect a syringe containing gas or liquid through the connector and inject it into the connecting tube. At this time, the one-way valve is pushed open under the positive pressure of the gas / liquid, and the gas / liquid enters the balloon through the connecting tube. At this time, the balloon changes from a contracted state to an expanded state, thereby fixing the distal end of the cannula in the human body;

[0052] 3. Place the mouth pad between the patient's upper and lower teeth to prevent the gastroscope from being bitten and damaged when the patient bites. At the same time, fix the proximal end of the cannula;

[0053] 4. After the lens of the gastroscope is attached to the patient's body secretions, the doctor will withdraw the gastroscope from the fixed sleeve, wipe the lens of the gastroscope, and then put it back into the patient's body through the sleeve; this will avoid repeated entry and exit of the gastroscope, which may cause damage to the patient's pharyngeal tissue mucosa, and avoid carrying some gastric reflux acid into the patient's pharynx during the repeated entry and exit of the gastroscope, thereby protecting the patient's lungs.

[0054] The above-mentioned embodiments are only used to understand the present invention. It should be noted that, for those skilled in the art, several improvements can be made to the present invention without departing from the principle of the present invention, and these improvements will also fall within the scope of protection of the claims of the present invention.

Claims

1. A cannula instrument for assisting gastroscopy operation, characterized in that: It includes: The cannula has a distal end and a proximal end, wherein the distal end enters the human body along with the gastroscope, and the proximal end is always located outside the human body; A balloon is disposed on the outer wall of the sleeve, the balloon being close to the distal end; wherein the balloon has an expanded state and a contracted state, and the balloon is configured to be switchable between the expanded state and the contracted state; Wherein, the balloon can fix the distal end in the patient's body in the expanded state.

2. The sleeve instrument for assisting gastroscopy according to claim 1, characterized in that: The sleeve also has a connecting tube; wherein the connecting tube has a first end and a second end, the first end is connected to the balloon, and the second end extends out from the proximal end of the sleeve / near the proximal end.

3. The sleeve instrument for assisting gastroscopy according to claim 2, characterized in that: The second end comprises: A connector having a first chamber and a second chamber, wherein the first chamber is connected to the connecting pipe, and the second chamber has a channel, wherein the first chamber and the second chamber are connected to each other; a one-way valve disposed in the first chamber, wherein the one-way valve is configured to allow flow from the second chamber to the first chamber; A release member is disposed in the second chamber, and is configured to be movable in the second chamber toward the first chamber, and partially extend into the first chamber to act on the one-way valve, so that the one-way valve is pushed open.

4. The sleeve instrument for assisting gastroscopy according to claim 3, characterized in that: The release member is composed of a hollow plate and a round rod; wherein the round rod and the hollow plate are concentric; when the hollow plate moves toward the first chamber, part of the round rod extends into the first chamber.

5. The sleeve instrument for assisting gastroscopy according to claim 1, characterized in that: The balloon is constructed as an air balloon or a water balloon.

6. The sleeve instrument for assisting gastroscopy according to any one of claims 1 or 5, characterized in that: The balloon is made of one of nylon, latex, silicone, PET and POC materials.

7. The sleeve instrument for assisting gastroscopy according to claim 1, characterized in that: The sleeve comprises: A hard tube, wherein the proximal end is one end of the hard tube; A soft tube, wherein the distal end is one end of the soft tube, and the balloon is disposed on the outer wall of the soft tube; Wherein, the soft tube and the hard tube are connected to each other.

8. The sleeve instrument for assisting gastroscopy according to claim 7, characterized in that: The inner walls of the hard tube and the soft tube are covered with a hydrophilic coating.

9. The sleeve instrument for assisting gastroscopy according to claim 7, characterized in that: The hard tube also has a mouth pad, wherein the mouth pad is sleeved on the outer wall of the hard tube.

10. The sleeve instrument for assisting gastroscopy according to claim 1, characterized in that: The distal end has a starting end and an ending end, wherein the diameter of the distal end decreases step by step from the starting end to the ending end.

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