Ligation device suitable for superfine gastroscope

Abstract

The utility model relates to a loop ligature device suitable for a superfine gastroscope, which belongs to the technical field of medical instruments and comprises a base, a winding shaft rotationally connected with the base is arranged on the base, the base is further provided with a negative suction connector directly facing the winding shaft, and a through hole is formed in the connector wall of the negative suction connector; one end of the sleeve is a superfine gastroscope abutting end, the other end of the sleeve is a ligation end, and the outer wall, close to the ligation end, of the sleeve is sleeved with a plurality of ligation rings; one end of the trigger pull wire penetrates through the sleeve from the superfine gastroscope abutting end of the sleeve and then penetrates out of the sleeve loop ligature end, the trigger pull wire penetrating out of the sleeve loop ligature end is arranged between the loop ligature rings and the outer wall of the sleeve, and the other end of the trigger pull wire penetrates out of the through hole and is connected with the winding shaft. Compared with the prior art, the negative suction connector is arranged on the base of the ligation device, negative pressure suction force can be additionally increased, and the problem that the ligation success rate of the ligation ring is low due to the negative pressure suction force is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a ligator applicable to an ultra-thin gastroscope. Background Art

[0002] At present, the medical ligators applied to children are all adult products, and most of the ligating rings are 6-ring or 7-ring products. After the adult ligator is used for young children, the following problems will occur:

[0003] (1) The oral cavity diameter of young children is relatively small, and ordinary gastroscopes cannot pass through. An ultra-thin gastroscope needs to be used. The adult ligator is adapted to an ordinary gastroscope and is not adapted to an ultra-thin gastroscope. The ultra-thin gastroscope cannot provide sufficient negative pressure attraction, resulting in a low success rate of ligating the ligating ring.

[0004] (2) The diameter of the adult ligator is about 10 mm, which will increase the risk of blood vessel injury in young children. Young children have problems with relatively small oral cavities and esophaguses. After the adult ligator enters the esophagus through the gastroscope, it will scrape the mucosa, increasing the risks of mucosal bleeding and esophageal variceal bleeding.

[0005] (3) Too many ligating rings cause waste of medical resources.

[0006] (4) The blood vessel sizes of children do not match, and it is impossible to accurately adapt to the characteristics of children's blood vessels.

[0007] (5) The lack of special equipment for children leads to challenges for doctors in treating children's varices and cannot provide the best treatment effect. Summary of the Utility Model

[0008] The purpose of the utility model is to provide a ligator applicable to an ultra-thin gastroscope to overcome at least one of the defects existing in the above-mentioned prior art. The ligator is a ligator specially designed for young children, which improves the treatment effect of children's varices and provides a safe treatment option to meet the special needs of child patients.

[0009] The purpose of the utility model can be realized by the following technical solutions:

[0010] A ligator applicable to an ultra-thin gastroscope, comprising:

[0011] A base, on which a winding shaft is rotatably connected thereto. The base is further provided with a negative suction interface facing the winding shaft, and through holes are provided on the interface wall of the negative suction interface;

[0012] A sleeve, one end of the sleeve is an abutting end for an ultra-thin gastroscope, and the other end is a ligating end. A plurality of ligating rings are sleeved on the outer wall of the sleeve near the ligating end;

[0013] The triggering wire, one end of the triggering wire passes through the inside of the sleeve from the abutting end of the sleeve ultra-thin gastroscope, and then passes out through the ligation end of the sleeve. The triggering wire passing out through the ligation end of the sleeve is arranged between the plurality of ligation rings and the outer wall of the sleeve. The other end of the triggering wire passes out through the through hole and is connected to the wire winding shaft.

[0014] Further, two support seats are arranged in a row on the base; the wire winding shaft rotatably passes through the two support seats.

[0015] Further, rotating handles are arranged at both ends of the wire winding shaft, and the rotating handle is a handle that conforms to the ergonomic principle, which is convenient for operation.

[0016] Further, the inner wall of the negative suction interface is provided with threads.

[0017] Further, there are at most 4 ligation rings.

[0018] Further, the negative suction interface is directly below the side edge of the wire winding shaft.

[0019] Further, the diameter of the sleeve is 4-6 mm, preferably 4, 5 or 6 mm.

[0020] Further, the outer diameter of the outer wall of the sleeve sleeved with a plurality of ligation rings gradually decreases along the ligation direction of the ligation ring.

[0021] Further, the sleeve is a medical polymer sleeve or a metal sleeve with high biocompatibility, which reduces the risk of damage to the blood vessel wall of children.

[0022] Further, the triggering wire is a medical polymer triggering wire with high biocompatibility, which reduces the risk of damage to the blood vessel wall of children.

[0023] Compared with the prior art, the utility model has the following advantages:

[0024] (1) The utility model provides a ligator applicable to an ultra-thin gastroscope. A negative suction interface is arranged on the base of the ligator, which can additionally increase the negative pressure attraction force and avoid the low ligation success rate caused by the negative pressure attraction force of the ligation ring. This is because the suction forceps channel of an adult endoscope is about 3.2 mm. When performing esophageal variceal ligation, after the adult endoscope presses the suction button, it can provide sufficient suction force to suck the target blood vessel into the sleeve, and then perform esophageal variceal suction and ligation. The suction forceps channel of an ultra-thin endoscope is about 2.2 mm. After pressing the suction button during the operation, the esophageal vein to be ligated cannot be completely sucked into the sleeve, reducing the success rate of the operation. Therefore, adding a negative suction interface on the base can provide a stronger suction force and increase the success rate of the ultra-thin gastroscope in esophageal variceal ligation operation.

[0025] (2) The present utility model provides a ligator applicable to an ultra-thin gastroscope. The diameter of the sleeve of the ligator is 4-6 mm, which is matched with the diameter of the ultra-thin gastroscope, avoiding scraping the mucosa and increasing the risks of mucosal bleeding and esophageal variceal bleeding.

[0026] (3) The present utility model provides a ligator applicable to an ultra-thin gastroscope. The two rotating handles of the ligator are symmetrically arranged at both ends of the wire winding shaft. Compared with the existing ligator with only one rotating handle, it makes up for the operating habits of doctors holding the endoscope with the left hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the ligator applicable to the ultra-thin gastroscope in the embodiment;

[0028] Figure 2 is Figure 1 a partial enlarged view of the base and the ultra-thin gastroscope in

[0029] As shown in the figure by the reference numerals: 1 - base; 2 - sleeve; 3 - trigger wire; 4 - negative suction interface; 5 - wire winding shaft; 6 - rotating handle; 7 - through hole; 8 - ligating ring; 9 - support seat; 10 - ultra-thin gastroscope. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The present utility model will be described in detail below with reference to the drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present utility model, and the detailed implementation manners and specific operation processes are given, but the protection scope of the present utility model is not limited to the following embodiments.

[0031] Embodiment

[0032] Please refer to Figure 1-2 , this embodiment provides a ligator applicable to an ultra-thin gastroscope, including:

[0033] Base 1, a wire winding shaft 5 rotatably connected to the base 1 is arranged on the base 1, a negative suction interface 4 facing the wire winding shaft 5 is further arranged on the base 1, and a through hole 7 is arranged on the interface wall of the negative suction interface 4;

[0034] Sleeve 2, one end of the sleeve 2 is an abutting end for the ultra-thin gastroscope, the other end is a ligating end, and at most 4 ligating rings 8 are sleeved on the outer wall of the sleeve 2 near the ligating end;

[0035] Trigger wire 3, one end of the trigger wire 3 passes through the inside of the sleeve 2 from the abutting end of the ultra-thin gastroscope of the sleeve 2, and then passes out through the ligating end of the sleeve 2. The trigger wire 3 passing out of the ligating end of the sleeve 2 is arranged between the plurality of ligating rings 8 and the outer wall of the sleeve 2, and the other end of the trigger wire 3 passes out through the through hole 7 and is connected to the wire winding shaft 5.

[0036] Please refer to againFigure 1-2 In this embodiment, two support seats 9 are arranged in a row on the base 1; the winding shaft 5 rotatably passes through the two support seats 9. Rotating handles 6 are further arranged at both ends of the winding shaft 5, and the rotating handles 6 are handles that conform to the ergonomic principle, which is convenient for operation.

[0037] In this embodiment, the inner wall of the negative suction interface 4 is provided with threads to facilitate the tight connection between the externally connected negative pressure tube and the negative suction connecting tube, and to prevent the negative pressure tube from falling off during operation. The negative suction interface 4 is located directly below the side edge of the winding shaft 5.

[0038] In order to be adapted to the ultra-thin gastroscope, in this embodiment, the diameter of the sleeve 2 is 4 - 6 mm, preferably 4, 5 or 6 mm.

[0039] In order to facilitate the ligation of the ligation ring 8, in this embodiment, the outer diameter of the outer wall of the sleeve 2 sleeved with a plurality of ligation rings 8 gradually decreases along the ligation direction of the ligation ring 8.

[0040] In this embodiment, the sleeve 2 is a medical polymer sleeve or a metal sleeve with high biocompatibility to reduce the risk of damage to the blood vessel wall of children. The trigger wire 3 is a medical polymer trigger wire with high biocompatibility to reduce the risk of damage to the blood vessel wall of children.

[0041] Specific operation process:

[0042] 1. Preoperative preparation: Ensure that the provided ligator and ultra-thin gastroscope 10 required for the operation are prepared. The negative suction interface 4 on the ligator is connected to the negative pressure suction device through an external pipeline.

[0043] 2. Locate the blood vessel: Use the ultra-thin gastroscope 10 to locate and identify the target blood vessel to be treated.

[0044] 3. Turn on the external suction, locate the target varicose vein. While pressing the suction button of the ultra-thin gastroscope 10, turn on the negative pressure suction device to provide additional negative pressure attraction, and suck the target varicose vein into the sleeve 2.

[0045] 4. Ligation operation: According to the operation guide, install and fix the ligator, and then gradually operate the ligator to tie the ligation ring 8 on the target blood vessel.

[0046] 5. Ligation inspection: After completing the ligation operation, carefully check the ligation position and stability. Ensure that the ligation ring 8 is firmly fixed on the blood vessel without loosening or displacement.

[0047] 6. Complete the operation: According to the surgical requirements, complete other necessary steps, and send the child patient to the ward after waking up.

[0048] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model in other forms. Any person skilled in the relevant art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution content of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A ligation device suitable for ultra-thin gastroscope, characterized in that: include: A base (1), the base (1) being provided with a winding shaft (5) rotatably connected thereto, the base (1) being further provided with a negative suction interface (4) facing the winding shaft (5), and a through hole (7) being provided on an interface wall of the negative suction interface (4); A sleeve (2), one end of the sleeve (2) being an ultra-thin gastroscope abutment end, and the other end being a ligation end, and a plurality of ligation rings (8) being sleeved on the outer wall of the sleeve (2) near the ligation end; A trigger pull wire (3), one end of which passes through the sleeve (2) tube from the ultra-fine gastroscope abutting end of the sleeve (2) and then passes out through the sleeve (2) ligation end. The trigger pull wire passing through the sleeve (2) ligation end is arranged between a plurality of ligation rings (8) and the outer wall of the sleeve (2). The other end of the trigger pull wire (3) passes out through the through hole (7) and is connected to the winding shaft (5).

2. A ligation device suitable for ultra-thin gastroscope according to claim 1, characterized in that: Two support seats (9) are arranged on the base (1); the winding shaft (5) can rotatably pass through the two support seats (9).

3. A ligation device suitable for ultra-thin gastroscope according to claim 2, characterized in that: Rotating handles (6) are also provided at both ends of the winding shaft (5).

4. The ligation device suitable for ultra-thin gastroscope according to claim 1, characterized in that: The inner wall of the negative suction interface (4) is provided with threads.

5. The ligation device suitable for ultra-thin gastroscope according to claim 1, characterized in that: The number of the ligation rings (8) is at most 4.

6. The ligation device suitable for ultra-thin gastroscope according to claim 1, characterized in that: The negative suction interface (4) is directly opposite to the lower side edge of the winding shaft (5).

7. The ligation device suitable for ultra-thin gastroscope according to claim 1, characterized in that: The diameter of the sleeve (2) is 4-6 mm.

8. The ligation device suitable for ultra-thin gastroscope according to claim 1, characterized in that: The outer diameter of the outer wall of the sleeve (2) sleeved with a plurality of ligating rings (8) gradually decreases along the ligating direction of the ligating rings (8).

9. The ligation device suitable for ultra-thin gastroscope according to claim 1, characterized in that: The sleeve (2) is a medical polymer sleeve with high biocompatibility or a metal sleeve with high biocompatibility.

10. The ligation device suitable for ultra-thin gastroscope according to claim 1, characterized in that: The trigger pull wire (3) is a medical polymer trigger pull wire with high biocompatibility.

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