Hemorrhoids loop ligature device

Abstract

The utility model provides a haemorrhoids loop ligature device, which relates to the technical field of medical instruments and comprises a push rod, a loop ligature device and a loop ligature device. An elastic thread; the elastic thread is provided with a near end extending into a human body and a far end far away from the near end; the near end is provided with a slipknot used for being connected with a target part in a sleeved mode. The far end extends out of the front end and the rear end of the push rod through the threading hole; the push rod is arranged on the elastic thread in a sliding mode to tighten the slipknot. According to the haemorrhoids ligation device, a pure manual line tightening mode is adopted, the elastic line is accurately ligated to a target part, tightening operation is conducted through the push rod, a doctor can adjust the line tightening strength according to the specific conditions of different wound surfaces, and the operation efficiency is improved. Therefore, the problem that in the prior art, after an elastic thread of an elastic thread loop ligature device is tightened, a knotted part is loosened, and consequently the elastic thread is prone to falling off from haemorrhoids after loop ligature is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a hemorrhoid ligation device. Background Art

[0002] Currently, with advances in science and technology and improvements in manufacturing techniques, anorectal ligation devices have significantly improved in quality, convenience, speed, and side effects compared to traditional manual suturing methods. For example, Chinese invention patent CN113712634B mentions an elastic cord ligation gun with an automatic disconnection function, which can automatically disconnect elastic cords left in the body after surgery, causing them to fall off as tissue necrosis occurs. Patent CN109124718A describes an elastic cord ligation device with a take-up device and its installation method, emphasizing the design of an electric drive device and a negative pressure tube to improve the efficiency and accuracy of the ligation.

[0003] However, the above patent application and the prior art have ignored the problem of whether the knotted part of the elastic thread is loose after being tightened, which makes it easy for the band to fall off the hemorrhoids after ligation; and because the banding position is high during ligation, the elastic thread may slip or the tightening force is insufficient, and the tightness cannot be displayed or measured. The line cannot be tightened with different forces according to different wounds, resulting in incomplete necrosis of the ligated tissue, and some necrotic tissue will adhere to the normal mucosal tissue and is not easy to fall off, resulting in a high probability of bleeding, and thus prone to heavy bleeding. Utility Model Content

[0004] In order to solve the problem of loose ligature of elastic wire ligation device in the prior art, which causes the ligature to slip from the target part and cause bleeding, the utility model provides a hemorrhoid ligation device, which is composed of only an elastic wire and a push rod. By adopting a purely manual tightening method, the elastic wire is accurately ligated to the target part, and the push rod is used to perform a detailed tightening operation, so that the doctor can adjust the tightening force according to the specific conditions of different wounds, thereby solving the problem of looseness of the knotted part of the elastic wire ligation device in the prior art after tightening, which causes the ligature to easily fall off the hemorrhoids after ligation.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A hemorrhoid ligation device, comprising:

[0007] A push rod, wherein the push rod is provided with a threading hole;

[0008] An elastic wire; the elastic wire has a proximal end extending into the body and a distal end away from the proximal end; the proximal end has a slipknot for sleeve engagement with a target site; the distal end passes through the threading hole from one end of the push rod and extends from the other end of the push rod;

[0009] The push rod is slidably arranged on the elastic line to tighten the slip knot.

[0010] Optionally, the push rod includes a rod head and a rod body; the rod heads are arranged at both ends of the rod body; and the diameter of the rod head is not less than the diameter of the rod body.

[0011] Optionally, a knot is provided at the distal end of the elastic line; and the diameter of the knot is not less than the diameter of the threading hole.

[0012] Optionally, the diameter of the threading hole is not less than the diameter of the elastic wire; and the diameter of the threading hole is 1mm-2mm.

[0013] Optionally, the elastic line includes a fabric braided layer and an elastic layer; and the fabric braided layer is located outside the elastic layer.

[0014] Optionally, a concave-convex texture is provided on the surface of the fabric woven layer; and the depth and height of the concave-convex texture are the same.

[0015] Optionally, the fabric woven layer is high-density polyethylene fiber, and preferably the elastic layer is a single silicone wire.

[0016] Optionally, an anti-slip structure is provided on the rod body.

[0017] The beneficial effects of the utility model are:

[0018] The hemorrhoid ligation device provided by the utility model has a simple structure and consists of only an elastic wire and a push rod. During the ligation process, the doctor can use a purely manual tightening method to accurately tie the elastic wire to the target area and perform a detailed tightening operation through the push rod, so that the doctor can adjust the tightening force according to the specific conditions of different wounds, which helps to improve the efficiency and safety of hemorrhoid surgery and promote the patient's postoperative recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic structural diagram of the hemorrhoid ligation device of the present invention;

[0021] Figure 2 It is a schematic cross-sectional view of the rod body at AA in the present invention;

[0022] Figure 3 It is a structural diagram of the elastic force line in the utility model;

[0023] In the figure: 1-putter; 11-threading hole; 12-rod head; 13-rod body; 131-anti-slip structure; 2-elastic line; 21-proximal end; 211-slip knot; 22-distal end; 221-fast knot; 23-fabric braided layer; 231-concave and convex texture; 24-elastic layer. DETAILED DESCRIPTION

[0024] The present invention will now be described in further detail. The embodiments described below are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort shall fall within the scope of protection of the present invention.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0026] The elastic thread ligation devices currently on the market all use semi-manual retraction, and often ignore the loosening of the knotted part after the elastic thread is tightened, which makes it easy for the ligation to fall off the hemorrhoids; and because the ligation position is high during ligation, the elastic thread slips or the tightening force is insufficient, and the tightness cannot be displayed or measured. The thread cannot be tightened with different forces according to different wounds, resulting in incomplete necrosis of the ligated tissue. Some necrotic tissue will adhere to the normal mucosal tissue and is not easy to fall off, which increases the probability of bleeding and makes heavy bleeding more likely to occur.

[0027] In order to solve the problem that the elastic line of the elastic line ligation device in the prior art becomes loose after being tightened, which causes the ligation to easily fall off the hemorrhoids, the utility model provides a hemorrhoid ligation device. Figure 1-Figure 2 As shown, the hemorrhoid ligation device includes a push rod 1, and a threading hole 11 is provided on the push rod 1;

[0028] The elastic line 2 has a proximal end 21 extending into the body and a distal end 22 away from the proximal end 21; the proximal end 21 has a slipknot 211 for sleeve engagement with the target site; the distal end 22 extends from the front and rear ends of the push rod 1 through the threading hole 11;

[0029] The push rod 1 is slidably arranged on the elastic line 2 to tighten the slip knot 211.

[0030] The hemorrhoid ligation device provided by the utility model has the advantages of simple structure, simple operation, reduced production steps and required precision technology, further reduced manufacturing cost, low production cost, easy cleaning and disinfection, reduced maintenance cost and time, effective prevention of elastic line slippage, help in simplifying the operation process of doctors, shortened operation time, secondary tightening when the ligation line loosens due to the gradual reduction of the ligation part of hemorrhoids, and ensured continuous effectiveness of ligation.

[0031] In the ligation operation using the utility model, first, the doctor adopts the pure manual tight line mode, accurately winds the proximal end 21 of the elastic line 2 at the target part through the conventional medical tools such as hemostatic forceps, and then performs knotting operation to make the proximal end 21 of the elastic line 2 form a slip knot 211; then, the distal end 22 of the elastic line 2 is inserted from one end of the push rod 1 through the threading hole 11 and extends from the other end of the push rod 1; then, the push rod 1 is pushed from the distal end 22 to the proximal end 21 of the elastic line 2, and then the slip knot 211 is tightened to ensure the firmness of ligation; finally, the excess elastic line 2 is cut to complete the whole ligation process.

[0032] The existing elastic line ligation device has a complex structure and adopts an automatic line tightening mode, needs to be connected with a negative pressure system, has a complex structure, high production cost, increases the economic burden of patients and the operation time of doctors, compared with the existing elastic line ligation device, the hemorrhoid ligation device of the utility model is composed of only one elastic line 2 and a push rod 1, has a simple structure and is easy to operate, reduces the production steps and required precision technology, and further reduces the manufacturing cost; meanwhile, the push rod 1 of the utility model is prepared from polyvinyl chloride (PVC) material, has low production cost and is easy to clean and disinfect, reduces the maintenance cost and time; and the utility model can effectively prevent the elastic line 2 from slipping, helps to simplify the operation process of doctors and shorten the operation time; in addition, when the ligation line loosens due to the gradual reduction of the ligation part of hemorrhoids, the utility model can also realize secondary tightening to ensure the continuous effectiveness of ligation.

[0033] Specifically, the push rod 1 of the utility model preferably comprises a rod head 12 and a rod body 13; the rod head 12 is arranged at both ends of the rod body 13, and the rod head 12 and the rod body 13 are integrally formed to ensure the integrity and stability of the structure; preferably, the diameter of the rod head 12 is greater than that of the rod body 13, so that the contact surface of the rod head 12 with the hemorrhoid tissue is larger and more flat, thereby reducing the pain or discomfort of the patient.

[0034] The utility model discloses a dead knot 221 is arranged at the distal end 22 of the elastic thread 2, and the diameter of the dead knot 221 is not less than the diameter of the threading hole 11.

[0035] Further, in order to adapt to different surgical requirements and improve the flexibility of operation, the diameter of the threading hole 11 is not less than the diameter of the elastic thread 2, so as to ensure that the elastic thread 2 can successfully pass through the push rod 1, and the diameter of the threading hole 11 is preferably 1mm-2mm.

[0036] In order to achieve a better ligation effect, as shown in Figure 3 The elastic thread 2 comprises a fabric braided layer 23 and an elastic layer 24, and the fabric braided layer 23 is located on the outside of the elastic layer 24.

[0037] In order to improve the reliability of ligation, the surface of the fabric braided layer 23 is provided with concave-convex textures 231.

[0038] Further, the depth of the concave-convex textures 231 is the same as the height. The depth and the height of the concave-convex textures 231 are both 0.01-0.2mm, so that when the elastic thread 2 is knotted, the concave-convex parts can tightly bite each other, the friction between the elastic threads is increased, the sliding or relaxation of the ligation thread during the operation is prevented, the risk of complications that may occur during the operation is reduced, and the stability of ligation is further improved. In addition, the concave-convex textures 231 can also reduce the wear of the elastic thread 2 to a certain extent and prolong the service life, thereby saving the cost of medical institutions.

[0039] Further, the fabric braided layer 23 is made of high-density polyethylene fiber, the diameter of the fabric braided layer 23 is 0.9mm-1.2mm, the elastic layer 24 is made of a single silicone wire, the diameter of the elastic layer 24 is 0.8mm-1mm, the grade of the high-density polyethylene fiber is selected from at least one of 5000S, E308 and E808, the grade of the silicone wire is selected from at least one of SH-2260AB, SH-2265AB and BQ-6550AB, the tensile ratio of the elastic thread is greater than or equal to 120%, and the breaking force of the elastic thread is greater than or equal to 60N.

[0040] The hemorrhoid ligation device provided by the present invention adopts the design of the inner and outer layer structure of elastic wire, which has significant advantages over ordinary medical silk thread. It has good elasticity and can adapt to the natural contraction of tissue during the healing process, reducing tightness and potential cutting force. When the elastic layer 24 is stretched during the ligation process, it will deform. This deformation can quickly rebound when released to form a strong elastic force. The generation of this elastic force can not only enhance the stability of the ligation site, but also significantly increase the friction at the intersection of the concave and convex texture 231 on the surface of the fabric woven layer 23, thereby preventing the elastic wire 2 from loosening and slipping during the ligation process, ensuring the firmness and reliability of the ligation.

[0041] In order to improve the convenience and safety of operation, the present invention preferably provides an anti-slip structure 131 on the rod body 13; the anti-slip structure 131 is preferably at least one of lines, protrusions and grooves, so that the surface of the rod body 13 can provide a better grip, and the doctor can control the push rod more stably during the operation, which is convenient for the fingers to grasp and reduces the risk of hand slippage. Figure 1 The anti-slip structure 131 is a protrusion.

[0042] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A hemorrhoid ligation device, characterized in that: include: A push rod (1), wherein the push rod (1) is provided with a threading hole (11); An elastic wire (2); the elastic wire (2) has a proximal end (21) extending into the body and a distal end (22) away from the proximal end (21); the proximal end (21) has a slipknot (211) for sleeve engagement with a target site; the distal end (22) passes through the threading hole (11) from one end of the push rod (1) and extends from the other end of the push rod (1); The push rod (1) is slidably arranged on the elastic line (2) to tighten the slipknot (211).

2. The hemorrhoid ligation device according to claim 1, wherein: The push rod (1) comprises a rod head (12) and a rod body (13); the rod head (12) is arranged at both ends of the rod body (13); and the diameter of the rod head (12) is not less than the diameter of the rod body (13).

3. The hemorrhoid ligation device according to claim 1, wherein: The distal end (22) of the elastic wire (2) is provided with a knot (221); and the diameter of the knot (221) is not less than the diameter of the threading hole (11).

4. The hemorrhoid ligation device according to claim 1, wherein: The diameter of the threading hole (11) is not less than the diameter of the elastic wire (2); and the diameter of the threading hole (11) is 1 mm to 2 mm.

5. The hemorrhoid ligation device according to claim 1, wherein: The elastic line (2) comprises a fabric braided layer (23) and an elastic layer (24); and the fabric braided layer (23) is located outside the elastic layer (24).

6. The hemorrhoid ligation device according to claim 5, characterized in that: The surface of the fabric braided layer (23) is provided with a concave-convex texture (231); and the depth and height of the concave-convex texture (231) are the same.

7. The hemorrhoid ligation device according to claim 5, characterized in that: The fabric braided layer (23) is made of high-density polyethylene fibers, and the elastic layer (24) is made of a single silicone wire.

8. The hemorrhoid ligation device according to claim 2, wherein: An anti-slip structure (131) is provided on the rod body (13).

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