Electrically powered ligation device cartridge seal

Abstract

The utility model provides a kind of electric ligation device blood storehouse sealing structure, including shell, negative pressure pump is provided in shell, and sleeve pipe is connected with the inlet of negative pressure pump, sleeve pipe is used to adsorb hemorrhoids tissue, and negative pressure pump is arranged in the handle of shell;Sealing element is arranged in handle;Sealing element separates handle inside into sealed cavity;Negative pressure pump is arranged in cavity;Sleeve pipe is sealed with sealing element;Blood adsorbed by sleeve pipe flows into cavity.The beneficial effect of the above setting is:1, sealed cavity volume is more than conventional blood absorption sponge, can accommodate more bleeding volume;2, doctor surgery, do not need to pay attention to the blood volume in sleeve ligation device, to improve the efficiency and effect of procedure;3, sealing element separates handle inside into independent cavity, and blood contact path is physically blocked, even if blood enters sleeve pipe with negative pressure, also be limited in sealed cavity, eliminate blood infiltration circuit system, and surgical safety is significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a banding device for treating hemorrhoids, specifically an electric banding device with a blood tank sealing structure. Background Technology

[0002] In the field of hemorrhoid treatment, the electric banding device, as a minimally invasive treatment tool, has been widely used in hemorrhoid ligation. Its working principle mainly involves using a negative pressure suction device to draw hemorrhoid tissue into the cannula, followed by precise banding of the hemorrhoid root with an elastic rubber ring, blocking blood flow to promote ischemic necrosis and sloughing of the hemorrhoid. However, when the negative pressure suction device acts on the hemorrhoid tissue, the surface of the hemorrhoid may experience minor bleeding due to friction or negative pressure. Blood can easily enter the cannula and handle with the negative pressure airflow. If blood directly contacts the circuit components, it may cause a short circuit, leading to equipment malfunction or surgical interruption, increasing the risk to the patient.

[0003] Currently, blood is typically temporarily absorbed by installing a blood-absorbing sponge inside the ligation cannula. However, due to the miniaturization design of the ligation device, the internal space of the cannula is limited, restricting the amount of blood-absorbing sponge that can be installed and its absorption capacity. In clinical use, the blood-absorbing sponge needs to be replaced frequently, and its absorption efficiency for sudden massive bleeding is insufficient, still making it difficult to completely avoid the risk of blood entering the electrical system.

[0004] Because additional attention needs to be paid to the blood absorption status and sponge replacement, the operator may be distracted by equipment maintenance rather than the surgical procedure, prolonging the operation time and increasing the complexity of the operation. At the same time, the upper limit of the blood absorption sponge's absorption capacity may become a bottleneck limiting the continuous working time of the ligation device, affecting the continuity of the surgery and overall efficiency.

[0005] Therefore, developing a novel blood management device that can effectively absorb blood, prevent short circuits, and maximize the use of internal space has become an urgent problem for those skilled in the art. Utility Model Content

[0006] To address the technical problems in the background art, this utility model discloses a blood tank sealing structure for an electric ligator.

[0007] This utility model provides a blood tank sealing structure for an electric banding device, including a housing, a negative pressure pump installed inside the housing, and a sleeve connected to the inlet of the negative pressure pump. The sleeve is used to adsorb hemorrhoid tissue, and the negative pressure pump is installed inside the handle of the housing.

[0008] A seal is installed inside the handle;

[0009] The seal isolates the inside of the handle into a sealed cavity;

[0010] The negative pressure pump is installed inside the cavity;

[0011] The sleeve and the seal are sealed together.

[0012] The blood adsorbed by the cannula flows into the cavity.

[0013] The beneficial effects of the above design are: 1. The sealed cavity volume is larger than that of traditional blood-absorbing sponges, which can accommodate more blood loss; 2. Doctors do not need to pay attention to the amount of blood in the ligator during surgery, thereby improving the efficiency and effectiveness of the procedure; 3. The seal isolates the inside of the handle into an independent cavity, physically blocking the path of contact with blood. Even if blood enters the cannula with negative pressure, it is confined within the sealed cavity, preventing blood from seeping into the circuit system and significantly improving surgical safety.

[0014] Since the sleeve and the handle are not on a straight line, bending the tail of the sleeve to connect to the negative pressure pump would result in a complex sleeve structure, high processing cost, and low forming accuracy. Therefore, a further improvement is made: the sleeve is arranged linearly, and a connecting pipe is connected near the handle. The connecting pipe is connected to the inlet of the negative pressure pump; the connecting pipe is sealed to the seal.

[0015] To ensure a stable flow of blood into the connector, a further design feature is that the portion of the connector and the sleeve near the suction port forms an obtuse angle.

[0016] The specific installation structure of the seal is as follows: a partition is provided at the upper end of the handle; the seal is located at the joint of the partition.

[0017] Since the connecting pipe needs to be connected to a negative pressure pump, and the negative pressure pump needs to be electrically connected to the battery, in order to improve the sealing effect, the further design is as follows: the sealing element is provided with a first set of holes and a second set of holes; the first set of holes is fitted with a connecting pipe; the second set of holes is fitted with an electric wire, and the electric wire connects the negative pressure pump and the battery.

[0018] Since the seal is made of a flexible material, the connection between it and the pipe has low structural stability and is prone to twisting, which can lead to leakage. Therefore, the further improvement is as follows: the part of the seal with the first hole is set as a sleeve part; the outer wall of the sleeve part is provided with a first groove; the first groove is fitted with a partition.

[0019] Traditionally, the seal and the partition are connected to the housing on both sides by a male and female snap-fit, which reduces the strength of the seal. Based on this, a further improvement is made by: the housing is spliced ​​together from a left shell and a right shell; the partition is divided into two parts, a left partition and a right partition, which are located on the left shell and the right shell respectively; a second slot is provided on one side of the seal, which snaps into the left partition; the other side of the seal contacts the surface of the right partition.

[0020] To further improve the structural stability of the seal, specifically: the housing is provided with a first limiting groove; the seal is provided with a first limiting block that engages with the first limiting groove; the seal is provided with a second limiting groove located on the opposite side of the first limiting block; and the housing is provided with a second limiting block that engages with the second limiting groove.

[0021] The structure of the first limiting groove directly affects the complexity of the shell structure. Based on this, a further improvement is made: a notch is provided at the connection between the left shell and the right shell; the notch and the right shell form the first limiting groove.

[0022] The beneficial effects of this invention are: 1. The sealed cavity volume is larger than that of traditional blood-absorbing sponges, which can accommodate more blood loss; 2. Doctors do not need to pay attention to the amount of blood in the ligator during surgery, thereby improving the efficiency and effectiveness of the procedure; 3. The sealing element isolates the inside of the handle into an independent cavity, physically blocking the path of contact with blood. Even if blood enters the cannula with negative pressure, it is confined within the sealed cavity, preventing blood from seeping into the circuit system and significantly improving surgical safety. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a top view of the present invention;

[0026] Figure 3 yes Figure 2 Sectional view of AA;

[0027] Figure 4 yes Figure 3 Sectional view of BB;

[0028] Figure 5 yes Figure 3 Enlarged view of point C in the middle;

[0029] Figure 6 This is a structural schematic diagram of the sealing element;

[0030] Figure 7 This is a structural schematic diagram of the seal from another perspective;

[0031] Figure 8 This is a schematic diagram of the left shell structure;

[0032] Figure 9 yes Figure 8 Enlarged view at point D;

[0033] In the diagram: 1. Housing; 2. Negative pressure pump; 3. Sleeve; 4. Handle; 5. Seal; 6. Cavity; 7. Connector; 8. Partition; 9. First sleeve hole; 10. Second sleeve hole; 11. Battery; 12. Connecting part; 13. First slot; 14. Left housing; 15. Right housing; 16. Left partition; 17. Right partition; 18. Second slot; 19. First limiting groove; 20. First limiting block; 21. Second limiting groove; 22. Second limiting block; 23. Notch; 24. Wire; 25. Hose. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0035] like Figure 1-3 As shown, this utility model discloses a blood tank sealing structure for an electric ligator, including a housing 1, which is composed of a left shell 14 and a right shell 15 joined together. A handle 4 extends obliquely downward from the tail end of the housing 1 for hand gripping, and the handle 4 forms an acute angle with the tail end of the housing 1.

[0036] A sleeve 3 extending along its length is installed inside the upper side of the housing 1, and a battery 11 is installed at the rear of the sleeve 3 and the tail of the housing 1. A negative pressure pump 2 is installed inside the handle 4 and is connected to the battery 11 via a wire 24. When the negative pressure pump 2 is activated, the sleeve 3 suctions up hemorrhoid tissue.

[0037] The cannula 3 extends downwards from directly above the handle 4, with a connecting tube 7 inserted into the handle 4. The connecting tube 7 connects to the inlet of the negative pressure pump 2. This arrangement simplifies the structure of the cannula 3. The connecting tube 7 extends in the same direction as the handle 4, allowing blood to flow smoothly into the connecting tube 7. In this embodiment, both the cannula 3 and the connecting tube 7 are rigid tubes. Since it is difficult to accurately connect the connecting tube 7 to the inlet of the negative pressure pump 2, a flexible tube 25 is also fitted onto the lower end of the connecting tube 7. The flexible tube 25 connects to the inlet of the negative pressure pump 2. The lower end of the connecting tube 7 is tower-shaped to increase the connection strength between the flexible tube 25 and the connecting tube 7.

[0038] like Figure 4 As shown, a baffle 8 is provided above the negative pressure pump 2, with the handle 4 positioned above it. The baffle 8 is composed of a left baffle 16 and a right baffle 17 joined together. The left baffle 16 is integrally formed on the left shell 14, and the right baffle 17 is integrally formed on the right shell 15.

[0039] A sealing element 5 is provided at the joint of the left partition 16 and the right partition 17 for sealing the connection between the left partition 16 and the right partition 17, so that the space below the partition 8 where the handle 4 is located forms a closed cavity 6.

[0040] The sealing element 5 has a first set of holes 9 and a second set of holes 10. The flexible tube 25 is inserted into the first set of holes 9 and sealed. With this configuration, the blood adsorbed by negative pressure will enter the cavity 6. The wire 24 passes through the second set of holes 10 and is also sealed.

[0041] like Figure 6 and Figure 7 As shown, the part of the sealing element 5 with the second sleeve hole 10 is configured as a sleeve part 12. The outer side of the sleeve part 12 is provided with a recessed first groove 13. The left partition 16 and the right partition 17 are both engaged with the first groove 13 to improve the structural strength of the sealing element 5 and the hose 25 and avoid twisting that causes sealing failure.

[0042] The end face of the seal 5 connected to the left partition 16 is provided with a second groove 18, in which the left partition 16 is engaged to improve the positional stability of the seal 5. The end face of the seal 5 connected to the right partition 17 is flat and contacts the surface of the right partition 17. Since the second groove 18 already improves the positional stability of the seal 5, there is no need to provide a groove on the connection surface between the seal 5 and the right partition 17. This increases the thickness of the seal 5 connected to the right partition 17, thereby increasing the strength of the seal 5 and preventing breakage.

[0043] The seal 5 has a raised first limiting block 20 on its left end and a recessed second limiting groove 21 on its right end. The handle 4 has a first limiting groove 19 that engages with the first limiting block 20 and a second limiting block 22 that engages with the second limiting groove 21. This is to further improve the positional stability of the seal 5.

[0044] like Figure 8 and Figure 9 As shown, a U-shaped notch 23 with its opening facing the right partition 17 is provided at the connection between the left partition 16 and the right partition 17. When the left partition 16 and the right partition 17 are joined together, the opening of the notch 23 is blocked by the right partition 17, thus forming the first limiting groove 19. This simplifies the structure of the housing 1, making it easier to process and shape.

[0045] The advantages of this embodiment are: 1. The sealed cavity 6 has a larger volume than traditional blood-absorbing sponges, which can accommodate more blood loss; 2. Doctors do not need to pay attention to the amount of blood in the ligator during surgery, thereby improving the efficiency and effectiveness of the procedure; 3. The sealing element 5 isolates the inside of the handle 4 into an independent cavity 6, physically blocking the path of contact with blood. Even if blood enters the cannula 3 with negative pressure, it is confined within the sealed cavity 6, preventing blood from seeping into the circuit system and significantly improving surgical safety.

[0046] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A blood reservoir sealing structure for an electric ligator, comprising a housing (1), wherein a negative pressure pump (2) is disposed within the housing (1), and a sleeve (3) connected to the inlet of the negative pressure pump (2), the sleeve (3) being used to adsorb hemorrhoid tissue, characterized in that: The negative pressure pump (2) is located inside the handle (4) of the housing (1); A sealing element (5) is provided inside the handle (4); The seal (5) seals the inside of the handle (4) into a sealed cavity (6); The negative pressure pump (2) is disposed inside the cavity (6); The sleeve (3) is sealed to the sealing element (5); The blood adsorbed by the cannula (3) flows into the cavity (6).

2. The blood chamber sealing structure of the electric ligator according to claim 1, characterized in that: The sleeve (3) is arranged linearly, and a connecting pipe (7) is connected to it near the handle (4). The connecting pipe (7) is connected to the inlet of the negative pressure pump (2). The connecting pipe (7) is sealed to the sealing element (5).

3. The blood chamber sealing structure of the electric ligator according to claim 2, characterized in that: The portion of the connector (7) and the sleeve (3) near the adsorption port form an obtuse angle.

4. The blood tank sealing structure of the electric ligator according to claim 3, characterized in that: The upper end of the handle (4) is provided with a partition (8); The sealing element (5) is disposed at the joint of the partition (8).

5. The blood chamber sealing structure of the electric ligator according to claim 4, characterized in that: The sealing element (5) is provided with a first set of holes (9) and a second set of holes (10); The first sleeve hole (9) is fitted with the connecting pipe (7); The second socket (10) is fitted with a wire (24), which connects the negative pressure pump (2) and the battery (11).

6. The blood chamber sealing structure of the electric ligator according to claim 5, characterized in that: The part of the sealing element (5) with the first sleeve hole (9) is configured as the sleeve part (12); The outer wall of the socket (12) is provided with a first slot (13); The first slot (13) is fitted with the partition plate (8).

7. The blood chamber sealing structure of the electric ligator according to claim 6, characterized in that: The shell (1) is composed of a left shell (14) and a right shell (15) joined together; The partition (8) is divided into two parts: a left partition (16) and a right partition (17), which are located on the left shell (14) and the right shell (15) respectively. The sealing element (5) has a second slot (18) on one side, which engages with the left partition (16); The other side of the seal (5) is in contact with the surface of the right partition (17).

8. The blood chamber sealing structure of the electric ligator according to claim 7, characterized in that: The housing (1) is provided with a first limiting groove (19); The sealing element (5) is provided with a first limiting block (20) that engages with the first limiting groove (19); The sealing element (5) is provided with a second limiting groove (21) located on the opposite side of the first limiting block (20); The housing (1) is provided with a second limiting block (22) that engages with the second limiting groove (21).

9. The blood chamber sealing structure of the electric ligator according to claim 8, characterized in that: A notch (23) is provided at the connection between the left shell (14) and the right shell (15); The notch (23) and the right shell (15) together form the first limiting groove (19).

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