Ring quick-mounting device and single-shot electric loop ligature device

Abstract

The invention relates to a ferrule quick-mounting device and a single-shot electric loop ligature device. The ferrule quick-mounting device comprises a clamping sleeve, a loop part used for clamping a ferrule, a connecting line used for clamping the loop part and leading out in the direction opposite to the loop ligature device, and a hard clamping rod connected with the end of the connecting line. The clamping rods can move back to the ring part under the clamping action and are blocked towards the ring part; the ring part can move towards the clamping rod under the clamping effect, and is blocked back to the clamping rod; the clamping cylinder is installed in a shell of the loop ligature device, is driven by a handle on the loop ligature device to move in the axial direction of the loop ligature device and is used for clamping the clamping rod and stretching and tightening the connecting line; and in the process that the clamping sleeve is sleeved with the loop ligature end of the shell, the ring part is automatically separated from the clamping sleeve and is automatically sleeved with a sleeve in the loop ligature device. According to the device, automatic mounting, automatic positioning and pre-tightening of the ferrule are completed, and a traditional manual stretching mounting mode is thoroughly replaced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, particularly to a ligator for treating hemorrhoids, specifically a loop quick-installation device and a single-shot electric ligator. Background Art

[0002] In the field of hemorrhoid ligation treatment, traditional multi-shot ligators achieve continuous firing by pre-setting multiple elastic loops in a magazine to improve the surgical efficiency. However, due to the significant elastic characteristics of the elastic loops themselves, during continuous firing, the elastic loops are prone to entanglement with each other or friction with the inner wall of the instrument due to elastic deformation, resulting in the elastic loops being stuck in the magazine, causing instrument failure and interrupting the surgical process. This problem has prompted technicians to improve the multi-shot ligator to a single-shot mode, that is, only loading a single elastic loop for firing each time.

[0003] But the existing single-shot ligators still have significant defects: 1. The flexible elastic loop needs to be manually stretched and precisely sleeved on the front end of the cannula of the ligator. Its elasticity makes the installation process time-consuming and difficult to fix, especially for novice operators, it is easy to cause installation failure; 2. After the elastic loop ligates the hemorrhoid tissue, it is necessary to cut the wire body connecting it to the ligator to achieve tissue detachment, and then it is necessary to disassemble the ligator and remove the residual knots inside; this process has many steps and takes a long time, increasing the complexity of the surgical operation; 3. Frequent disassembly and assembly of the ligator will cause increased wear and reduced accuracy of the ligator, thereby reducing the service life of the ligator.

[0004] In summary, there is an urgent need for a new type of ligator with simplicity of operation, functional stability and high efficiency of reuse. Summary of the Invention

[0005] To solve the technical problems in the background art, the present invention discloses a loop quick-installation device and a single-shot electric ligator.

[0006] The present invention provides a loop quick-installation device, including:

[0007] A clamping sleeve for clamping the loop part of the loop, and also for clamping the connecting wire led out in the direction of the ligator opposite to the loop part and the rigid clamping rod connected to the end of the connecting wire; the clamping rod can move away from the loop part under the action of clamping and is blocked when facing the loop part; the loop part can move towards the clamping rod under the action of clamping and is blocked when moving away from the clamping rod;

[0008] A clamping cylinder installed in the housing of the ligator and driven to move axially by the handle on the ligator, for clamping the clamping rod and stretching and tightening the connecting wire;

[0009] During the process of the clamping sleeve sleeving the ligation end of the housing, the loop part automatically disengages from the clamping sleeve and automatically sleeves on the cannula inside the ligator.

[0010] The beneficial effects of the above settings are as follows: 1. Before use, the loop is pre - clamped on the cartridge. When the ligator needs to be used, only by successively completing the steps of sleeving the cartridge on the housing, driving the cartridge to extend and retract by the operating handle, and pulling out the cartridge, the automatic installation, automatic positioning, and pre - tightening of the loop can be completed, completely replacing the traditional manual stretching installation method; 2. The loop and the cartridge form consumable parts, which can be set in multiple numbers matching the ligator, enabling the ligator to be continuously used multiple times, thus improving the utilization rate of the ligator; 3. The internal space of the cartridge is relatively large and can accommodate multiple clamping rods. When the connecting line is cut, the elastic potential energy of the connecting line is converted into kinetic potential energy at the moment of the break of the connecting line, and the cut connecting line and the clamping rod will move to the tail of the cartridge, enabling the ligator to be used multiple times without disassembly.

[0011] The specific structure for the loop to automatically disengage from the cartridge is as follows: A guiding part is arranged inside the cartridge, and a sliding hole is arranged inside the guiding part; A sliding sleeve that is clamped with the loop part is slidably connected inside the sliding hole; When the cartridge is sleeved on the housing, the sliding sleeve moves in the direction away from the ligator under the block of the sleeve.

[0012] Since when the sliding sleeve moves, the loop will follow and move a certain distance, resulting in the loop not being able to stably disengage from the sliding sleeve and not being able to stably sleeve on the sleeve. Based on this, a further improvement is that: The sliding sleeve is provided with a shoulder, and the end face of the shoulder faces away from the clamping rod; The loop part is limited between the shoulder and the end of the guiding part. With this setting, when the sliding sleeve moves, the loop will be blocked by the end of the guiding part, keeping the position of the loop stable.

[0013] The shoulder will block the loop from disengaging from the sliding sleeve. Based on this, a further improvement is that: The end face of the shoulder is arranged obliquely.

[0014] The specific structure for the cartridge to clamp the clamping rod is as follows: A clamping block is arranged inside the cartridge; On the clamping block, there are a clamping hole and an insertion hole that extend along the axial direction of the clamping rod and are connected in sequence; The diameter of the clamping hole is larger than that of the perforation; The clamping rod is clamped in the clamping hole; The connecting line is inserted into the perforation.

[0015] When installing the loop in the cartridge, it will be blocked by the outer wall of the cartridge, making its installation difficult. Based on this, a further improvement is that: The part of the cartridge that clamps the loop is a semi - enclosed clamping part.

[0016] To simplify the installation difficulty of the clamping rod, a further design is that: The clamping block is provided with a notch that penetrates along the opening direction of the clamping part; The notch communicates with the clamping hole and the insertion hole; The end face where the clamping hole and the notch are connected as a whole is in a superior arc shape.

[0017] When the sliding sleeve moves, the loop will be squeezed by the shoulder. If the sliding sleeve rotates, it will cause the loop to be distorted or even damaged. Based on this, a further improvement is that: The hole wall of the sliding hole is provided with a radially inward protruding guiding plate; The sliding sleeve is provided with a sliding groove for clamping the guiding plate.

[0018] Since the sliding sleeve abuts against the casing, and when the sliding sleeve moves, the positions of the sliding sleeve and the casing will deviate, resulting in difficulty for the ferrule to accurately sleeve the casing. Based on this, a further improvement is as follows: A guide sleeve connected to the guide plate is also provided inside the ferrule; the guide sleeve is inserted into the sliding sleeve or simultaneously inserted into both the sliding sleeve and the casing. With this arrangement, when sleeving the ferrule and the sliding sleeve moves under the block of the collar, the casing will automatically sleeve on the guide sleeve, thereby improving the concentricity between the sliding sleeve and the casing, and the ferrule can accurately sleeve on the casing.

[0019] The present invention also discloses a single-shot electric ligator, which includes a ferrule quick-installation device. With this arrangement, the single-shot electric ligator is more convenient and fast to use and can also be used continuously for multiple times. Brief Description of the Drawings

[0020] The present invention will be further described below in conjunction with the drawings and embodiments.

[0021] Figure 1 is a schematic installation structure diagram of the ferrule and the collar in the present invention;

[0022] Figure 2 is a schematic structure diagram of the ferrule in the present invention;

[0023] Figure 3 is an exploded view of the ferrule in the present invention;

[0024] Figure 4 is a right view of the ferrule in the present invention;

[0025] Figure 5 is Figure 4 a cross-sectional view taken along A-A in

[0026] Figure 6 is Figure 5 a cross-sectional view taken along B-B in

[0027] Figure 7 is a front view cross-sectional view of the ferrule before being installed on the ligator;

[0028] Figure 8 is a front view cross-sectional view when the ferrule sleeves the ligator and the sliding sleeve abuts against the casing;

[0029] Figure 9 is a front view cross-sectional view when the ferrule is transferred from the sliding sleeve to the casing;

[0030] Figure 10 is a front view cross-sectional view of the installation structure of the ferrule after the ferrule is pulled out;

[0031] Figure 11 is a schematic structure diagram of the single-shot electric ligator in the present invention when sleeving the ferrule;

[0032] Figure 12It is the front view of the single-shot electric ligator of the present invention when the socket is sleeved with the socket;

[0033] Figure 13 It is a schematic structural diagram of another perspective of the single-shot electric ligator of the present invention;

[0034] Figure 14 It is a schematic structural diagram of the single-shot electric ligator of the present invention with the cover plate hidden;

[0035] Figure 15 is Figure 14 the enlarged view of part C in

[0036] In the figure: 1. Socket; 2. Ferrule; 3. Cartridge; 4. Housing; 5. Handle; 6. Sleeve; 7. Slide sleeve; 8. Drive tube; 31. Groove; 32. Claw; 33. Tooth; 41. Magazine; 42. Cover plate; 71. Shoulder; 72. Slide groove; 73. Clamping plate; 101. Guide part; 102. Slide hole; 103. Clamping block; 104. Clamping hole; 105. Insertion hole; 106. Clamping part; 107. Notch; 108. Guide plate; 109. Guide sleeve; 110. Connection part; 111. Accommodating part; 112. Limiting step; 113. Bottom groove; 114. End cover; 201. Ring part; 202. Connecting wire; 203. Clamping rod. Specific embodiments

[0037] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0038] Embodiment 1:

[0039] The present invention provides a ferrule quick installation device, including a socket 1 and a cartridge 3 installed on the housing 4. The ferrule 2 includes a circular ring-shaped ring part 201, and a connecting wire 202 is vertically led out from one end of the ring part 201, and a clamping rod 203 is connected to the end of the connecting wire 202.

[0040] As Figure 1-6 shown, the socket 1 is composed of a connecting part 110 and a clamping part 106 which are connected in sequence and integrally formed. Taking Figure 12As a reference view, the connecting portion 110 is a horizontally extending cylindrical shape. Its left side is the accommodating portion 111, and its right side is the guiding portion 101. The diameter of the accommodating portion 111 is larger than that of the guiding portion 101, so that a limiting step 112 is formed at the connection of the inner part of the connecting portion 110 between the accommodating portion 111 and the guiding portion 101. The guiding portion 101 is provided with a sliding hole 102 extending in the horizontal direction, and the sliding sleeve 7 is inserted into the sliding hole 102 to achieve moving guidance. A radially protruding clamping plate 73 is provided at the left end of the sliding sleeve 7. The diameter of the clamping plate 73 is larger than that of the sliding hole 102, so that the clamping plate 73 moves within the space of the accommodating portion 111 and is restricted by the left side of the accommodating portion 111 and the limiting step 112. A end cap 114 is threadedly connected to the left side of the accommodating portion 111 for facilitating the disassembly and assembly of the sliding sleeve 7.

[0041] Two symmetrically protruding guiding plates 108 are further provided on the hole wall of the sliding hole 102. The sliding sleeve 7 is provided with a sliding groove 72 for clamping the guiding plate 108 to prevent the sliding sleeve 7 from rotating around its axis when moving.

[0042] A shoulder 71 is provided at the middle position of the sliding sleeve 7. The diameter of the left side portion of the shoulder 71 is smaller than that of the right side portion. When the sliding sleeve 7 is at the position where the clamping plate 73 abuts against the limiting step 112, the right end face of the guiding portion 101, the portion of the sliding sleeve 7 on the left side of the shoulder 71, and the shoulder 71 form a limiting groove. The ferrule 2 is sleeved on the sliding sleeve 7 and is located in the limiting groove to achieve the installation limit of the ferrule 2. The shoulder 71 is arranged obliquely and forms obtuse angles with the portions on both sides. With such a setting, the shoulder 71 also plays a guiding role to facilitate the ferrule 2 to disengage from the sliding sleeve 7.

[0043] The clamping part 106 is in a semi-surrounding structure, and its end forms a U-shaped opening to the left. The clamping part 106 is provided with a clamping block 103 protruding inwards on the upper right side of the sliding sleeve 7. The clamping block 103 is provided with a clamping hole 104 and a jack 105 that extend along the axial direction of the clamping rod 203 and are connected in sequence from right to left. The diameter of the clamping hole 104 is larger than that of the perforation. The clamping block 103 is also provided with a notch 107 penetrating along the opening direction of the clamping part 106; the notch 107 communicates with the clamping hole 104 and the jack 105. With such a setting, when the clamping rod 203 is inserted into the clamping hole 104 from right to left, the connecting line 202 only needs to be inserted into the jack 105 from the notch 107, thus simplifying the clamping difficulty of the clamping rod 203. The width of the notch 107 is set such that the end face where the clamping hole 104 and the notch 107 are connected as a whole is in a superior arc shape. With such a setting, it is used to improve the position stability of the clamping rod 203 and is not easily detached from the notch 107. The clamping block 103 is also provided with a bottom groove 113. One end of the bottom groove 113 extends to the inner wall of the clamping part 106, and the other end is connected to the clamping hole 104. The width of the bottom groove 113 is smaller than the diameter of the clamping hole 104. With such a setting of the bottom groove 113 and the notch 107, the part of the clamping block 103 provided with the clamping hole 104 is also divided into upper and lower parts, making it elastic, thus facilitating the clamping of the clamping rod 203 into the clamping hole 104.

[0044] The cartridge 3 is located above the sleeve 6 and is parallel to the sleeve 6. The housing 4 is provided with a handle 5. The middle part of the handle 5 is hinged to the housing 4, the upper end is clamped to the right end of the cartridge 3, and the lower end is for human hand to hold. By rotating the handle 5, the cartridge 3 can be driven to move left and right. The left end of the cartridge 3 is provided with a groove 31. Elastic clamping claws 32 are formed between adjacent grooves 31 due to the action of the grooves 31. The inner side of the clamping claws 32 is provided with clamping teeth 33 for clamping the platform on the upper end face of the clamping rod 203 facing the ferrule 2. When the cartridge 3 moves to the left, the cartridge 3 first contacts the right end of the clamping rod 203, and the clamping claws 32 open under the action of the clamping rod 203; when the cartridge 3 continues to move to the left until the clamping teeth 33 are located on the left side of the platform, the cartridge 3 moves to the right, the clamping teeth 33 clamp the platform, and pull the clamping rod 203 to move to the right, so that the connecting line 202 is stretched and tightened.

[0045] As Figures 13-15 shown, the right side of the housing 4 is also provided with a cartridge magazine 41 communicating with the right end of the cartridge 3. The cut clamping rod 203 and the connecting line 202 are stored in the cartridge magazine 41. The cartridge magazine 41 is provided with a cover plate 42. By opening the cover plate 42, the cut clamping rod 203 and the connecting line 202 can be taken out.

[0046] A guiding sleeve 109 arranged coaxially is further provided in the sliding hole 102 and is integrally formed and connected with the upper and lower guiding plates 108. The guiding sleeve 109 is inserted into the sliding sleeve 7 or simultaneously inserted into both the sliding sleeve 7 and the sleeve 6. With such an arrangement, when the ferrule 1 is sleeved, and the sliding sleeve 7 moves under the block of the collar, the sleeve 6 will automatically be sleeved on the guiding sleeve 109, thereby improving the concentricity between the sliding sleeve 7 and the sleeve 6, and enabling the ferrule 2 to accurately sleeve on the sleeve 6.

[0047] The working principle of the present invention is as follows: As Figures 7-12 shown in the figure, 1. First, the ferrule 2 is clamped and fixed on the ferrule 1; 2. The ferrule 1 is sleeved on the left end of the ligator, and when the ferrule 1 moves to the right, the right end of the sliding sleeve 7 abuts against the left end of the sleeve 6; 3. As the ferrule 1 continues to move to the right, the sliding sleeve 7 is blocked by the sleeve 6 and moves to the left. At this time, the guiding sleeve 109 is inserted into the sleeve 6, and the position of the ferrule 2 is kept unchanged under the block of the right end face of the guiding part 101; 4. When the sliding sleeve 7 retracts into the sliding hole 102 and the sleeve 6 is inserted into the sliding hole 102, the ferrule 2 automatically transfers and sleeves on the left end of the sleeve 6; 5. Hold the handle 5 and drive the cartridge 3 to move to the left to clamp the clamping rod 203; 6. Release the handle 5, and the handle 5 resets under the action of the torsion spring and pulls the clamping rod 203 to move to the right, so that the connecting line 202 is stretched and tensed to generate elasticity; 7. Pull out the ferrule 1 to complete the installation of the ferrule 2.

[0048] The working principle of the present invention for treating hemorrhoids is as follows: 1. The sleeve 6 adsorbs the hemorrhoid tissue under the action of the negative pressure pump; 2. Hold the handle 5 and drive the drive tube 8 and the cartridge 3 sleeved outside the sleeve 6 to move to the left together; the drive tube 8 pushes the ferrule 2 away from the sleeve 6 and ligates it at the root of the hemorrhoid tissue; 3. Cut the connecting line 202 to separate the ligator from the hemorrhoid tissue; 4. After the connecting line 202 is cut, the elastic potential energy of the connecting line 202 will be converted into kinetic energy, and the clamping rod 203 moves to the right into the cartridge 41 under the action of the kinetic energy, so that the ligator can be used continuously again.

[0049] Compared with the prior art, the advantages of the present invention are as follows: 1. Before use, the ferrule 2 is pre-clamped on the ferrule 1. When the ligator needs to be used, only by successively completing the operations of sleeving the ferrule 1 on the housing 4, driving the cartridge 3 to extend and retract by operating the handle 5, and pulling out the ferrule 1, the automatic installation, automatic positioning, and pre-tightening of the ferrule 2 can be completed, completely replacing the traditional manual stretching installation method; 2. The ferrule 2 and the ferrule 1 form consumable parts, which can be provided in multiple numbers matching the ligator, so that the ligator can be used continuously for multiple times, thereby improving the utilization rate of the ligator; 3. The internal space of the cartridge 3 is relatively large and can accommodate multiple clamping rods 203; when the cut connecting line 202 and the clamping rod 203 are at the moment of the breakage of the connecting line 202, the elastic potential energy of the connecting line 202 is converted into kinetic potential energy and moves to the tail of the cartridge 3, so that the ligator can be used multiple times without disassembly.

[0050] Embodiment 2:

[0051] The present invention also discloses a single-shot electric ligator, which includes a loop quick-installation device in Embodiment 1. With this arrangement, the single-shot electric ligator is more convenient and faster to use and can also be used continuously for multiple times.

[0052] Inspired by the above ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A ferrule quick installation device, characterized in that Comprising: A ferrule (1) for clamping the ring part (201) of a ferrule (2), and also for clamping a connecting wire (202) led out from the ring part (201) in the direction of the ligator and a rigid clamping rod (203) connected to the end of the connecting wire (202); the clamping rod (203) can move away from the ring part (201) under the action of clamping and is blocked when facing the ring part (201); the ring part (201) can move towards the clamping rod (203) under the action of clamping and is blocked when moving away from the clamping rod (203); A cartridge (3) installed in the housing (4) of the ligator, driven by a handle (5) on the ligator to move axially along it, for clamping the clamping rod (203) and stretching and tightening the connecting wire (202); During the process of the ferrule (1) sleeving the ligation end of the housing (4), the ring part (201) automatically disengages from the ferrule (1) and automatically sleeves on a cannula (6) inside the ligator.

2. The quick installation device for ferrule according to claim 1, characterized in that: A guiding part (101) is arranged inside the ferrule (1), and a sliding hole (102) is arranged inside the guiding part (101); A sliding sleeve (7) clamped with the ring part (201) is slidably connected inside the sliding hole (102); When the ferrule (1) sleeves the housing (4), the sliding sleeve (7) moves in the direction away from the ligator under the block of the cannula (6).

3. The ferrule quick-installation device according to claim 2, wherein: The sliding sleeve (7) is provided with a shoulder (71), and the end face of the shoulder (71) faces away from the clamping rod (203); The ring part (201) is limited between the shoulder (71) and the end of the guiding part (101).

4. The ferrule quick installation device according to claim 3, characterized in that: The end face of the shoulder (71) is inclined.

5. A ferrule quick installation device according to claim 1, characterized in that: A clamping block (103) is arranged inside the ferrule (1); A clamping hole (104) and an inserting hole (105) which extend axially along the clamping rod (203) and are sequentially connected are arranged on the clamping block (103); The diameter of the clamping hole (104) is larger than that of the inserting hole (105); The clamping rod (203) is clamped inside the clamping hole (104); The connecting wire (202) is inserted into the inserting hole (105).

6. A ferrule quick installation device according to claim 1, characterized in that: The part of the ferrule (1) for clamping the ferrule (2) is a semi-enclosed clamping part (106).

7. The quick installation device for ferrule according to claim 6, characterized in that: The clamping block (103) is provided with a notch (107) penetrating along the opening direction of the clamping part (106); The notch (107) communicates with the clamping hole (104) and the inserting hole (105); The end face formed by connecting the clamping hole (104) and the notch (107) as a whole is in a superior arc shape.

8. The quick installation device for ferrule according to claim 2, wherein: The hole wall of the sliding hole (102) is provided with a radially inward protruding guiding plate (108); The sliding sleeve (7) is provided with a sliding groove (72) for the guiding plate (108).

9. A ferrule quick-installation device according to claim 8, characterized in that: A guiding sleeve (109) connected to the guiding plate (108) is further arranged inside the ferrule (1); The guiding sleeve (109) is inserted into the sliding sleeve (7) or simultaneously inserted into the sliding sleeve (7) and the cannula (6).

10. A single-shot electric ligation device, characterized in that: Including a ferrule quick-installation device according to any one of claims 1-9.

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