Manual line tightening and cutting type loop ligature device

Abstract

The utility model relates to the technical field of loop ligature devices, in particular to a manual line tightening and cutting type loop ligature device which comprises a gun body assembly, an elastic line assembly, a take-up assembly, a cutting assembly and a pushing assembly, the take-up assembly comprises a take-up wheel rotationally installed at the rear end of a gun shell, part of the take-up wheel extends out of the gun shell, and the rear end of an elastic line is fixed to the take-up wheel. The shearing assembly comprises a cutter, a cutter pushing rod fixed to the rear end of the cutter and a trigger rotationally arranged on the gun shell and used for applying pressure to the cutter pushing rod. The pushing assembly comprises a pushing sleeve arranged outside the gun barrel in a sliding and sleeving mode so as to push out a ring sleeve at the front end of the gun barrel and a pushing sleeve rod used for applying pressure to the pushing sleeve and stretching out of the gun shell backwards. Take-up is achieved by stirring the take-up wheel at the rear end of the gun shell through the thumb, line cutting is achieved by pulling the trigger through the index finger, the whole process can be completed only through one hand, the operation process is simplified, time and labor are saved, the overall structure is simple, the weight is small, and the fatigue degree of an operator is reduced.

Description

Technical Field

[0001] This utility model relates to the field of ligation device technology, and in particular to a manual tensioning and cutting ligation device. Background Technology

[0002] Existing ligation devices are generally divided into electric and manual structures. Manual ligation devices have a simple overall structure, but during the operation, one hand needs to hold the ligation device and the other hand needs to pull the elastic line. It requires two or even two operators to complete the operation, which is cumbersome. Electric ligation devices require a large number of additional structures, including motors, electric push rods, and control units, on the basis of manual structures. This results in a complex overall structure and greater weight. The failure rate is also higher, and it puts a greater burden on the operator's hands, which affects the accuracy of the operation. Utility Model Content

[0003] The technical problem to be solved by this utility model is: in order to solve the problem that the existing manual ligation device requires two or even two operators to complete the operation, and the electric ligation device has a complex overall structure and heavy weight, has a high failure rate, and puts a great burden on the operator's hands, thus affecting the accuracy of the operation, a manual tensioning and cutting ligation device is provided.

[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a manual tensioning and cutting type ligating device, comprising:

[0005] Gun assembly, including the gun case and the barrel fixed to the front end of the gun case;

[0006] The elastic cord assembly includes a ring and an elastic cord extending rearward from the ring to control the ring diameter;

[0007] The take-up assembly includes a take-up reel rotatably mounted at the rear end of the gun housing, with a portion of the take-up reel extending out of the gun housing, and the rear end of the elastic line being fixed to the take-up reel;

[0008] The shearing assembly includes a cutter, a push rod fixed to the rear end of the cutter, and a trigger rotatably mounted on the gun housing for applying pressure to the push rod.

[0009] The push assembly includes a push sleeve that is slidably sleeved outside the barrel to push out a ring at the front end of the barrel and a push rod for applying pressure to the push sleeve and extending rearward out of the barrel case.

[0010] Furthermore, the front end of the push sleeve is formed with a blade feeding channel for accommodating the cutter, and the blade feeding channel and the cutter are respectively formed with a protrusion and a groove for sliding the protrusion.

[0011] Furthermore, the shearing assembly also includes a pressure block located between the push rod and the trigger, and a first elastic element sleeved on the push rod. The gun housing has a protruding support portion for the push rod to pass through and support it. One end of the first elastic element abuts against the pressure block, and the other end abuts against the support portion.

[0012] Furthermore, the banding device also includes a negative pressure assembly, which includes a negative pressure tube and a vent tube connected between the barrel and the negative pressure tube. A connector is installed at the end of the negative pressure tube opposite to the vent tube, and the connector extends out of the gun casing.

[0013] Furthermore, the trigger extends toward the pressure block and forms at least two push claws for applying pressure to the pressure block. A groove is formed on the side of the push rod near the trigger. The trigger, push claws, and groove together form a limiting cavity for limiting the negative pressure tube.

[0014] Furthermore, the pushing assembly also includes a transition sleeve located between the pushing sleeve and the pushing rod, the transition sleeve being fitted over the outside of the vent pipe and a second elastic element being installed between the two.

[0015] Furthermore, the rear end of the barrel is inserted into the vent pipe, and the barrel and the vent pipe are respectively provided with elastic hooks and locking grooves for the elastic hooks to engage.

[0016] Furthermore, the push sleeve extends rearward to form several elastic buckles, the transition sleeve extends forward to form several push plates, the rear end of the gun barrel forms a through groove for the push plates to extend into, and a locking block that engages with the elastic buckles is slidably installed in the through groove.

[0017] Furthermore, the barrel includes a large-diameter section at the front end, a small-diameter section at the rear end, and a connecting section between the two. The ring is sleeved on the large-diameter section, and the small-diameter section protrudes radially to form a plurality of protruding ridges for supporting the push sleeve.

[0018] Furthermore, the gun casing is movably provided with a release button for extending into the locking groove to push out the elastic locking hook.

[0019] The beneficial effects of this utility model are as follows: This application achieves line winding by flicking the reel at the rear of the gun case with the thumb and cutting the line by pulling the trigger with the index finger. The whole process can be completed with only one hand, which simplifies the operation, saves time and effort, and the overall structure is simple and lightweight, reducing operator fatigue. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a three-dimensional schematic diagram of the present invention from a first-person perspective;

[0022] Figure 2 This is a three-dimensional schematic diagram of the present invention from a second perspective;

[0023] Figure 3 This is the front view of this utility model;

[0024] Figure 4 This is a cross-sectional view of the present invention;

[0025] Figure 5 This is a front view of the present invention after part of the shell has been removed;

[0026] Figure 6 This is a three-dimensional schematic diagram of the present invention after part of the shell has been removed;

[0027] Figure 7 This is an exploded view of the push component of this utility model;

[0028] Figure 8 This is a three-dimensional schematic diagram of the gun barrel.

[0029] In the picture:

[0030] 1. Gun body assembly; 101. Gun case; 1011. Support section; 102. Gun barrel; 1021. Elastic locking hook; 1022. Through groove; 1023. Large diameter section; 1024. Small diameter section; 1025. Connecting section; 1026. Raised ridge; 103. Tube cap;

[0031] 2. Elastic cord assembly; 201. Ring; 202. Elastic cord;

[0032] 3. Take-up assembly; 301. Take-up reel; 302. Connecting shaft; 303. Clip;

[0033] 4. Shearing assembly; 401. Cutter; 4011. Protrusion; 402. Push rod; 403. Trigger; 4031. Push claw; 404. Pressure block; 405. First elastic element; 406. Limiting cavity;

[0034] 5. Pushing component; 501. Pushing sleeve; 5011. Tool feeding channel; 5012. Slide groove; 5013. Elastic buckle; 502. Push sleeve rod; 503. Transition sleeve; 5031. Push plate; 504. Second elastic element; 505. Locking block;

[0035] 6. Negative pressure assembly; 601. Negative pressure pipe; 602. Vent pipe; 6021. Locking groove; 603. Connector;

[0036] 7. Separate button. Detailed Implementation

[0037] 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. Therefore, they only show the components relevant to the present invention. Orientations and references (e.g., up, down, left, right, etc.) are only used to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0038] like Figures 1-8 As shown, a manual tensioning and cutting type ligator includes:

[0039] Gun body assembly 1 includes a gun shell 101 with an inner cavity and a gun barrel 102 fixed to the front end of the gun shell 101. The gun shell 101 includes a left half shell and a right half shell, which are engaged and enclosed to form the aforementioned inner cavity.

[0040] The elastic cord assembly 2 includes a ring 201 and an elastic cord 202 extending from the ring 201 to the rear (the rear end is the end closer to the operator and the front end is the end closer to the lesion) to control the ring diameter of the ring 201. Pulling the elastic cord 202 backward can tighten the ring 201 (i.e., reduce the ring diameter of the ring 201).

[0041] The take-up assembly 3 includes a take-up reel 301 rotatably mounted at the rear end of the gun housing 101, with a portion of the take-up reel 301 extending out of the gun housing 101. The rear end of the elastic cord 202 is fixed to the take-up reel 301. There are two take-up reels 301, spaced apart and connected by a connecting shaft 302. The connecting shaft 302 protrudes radially to form several locking pins 303. The rear end of the elastic cord 202 is looped around the locking pins 303. During operation, while holding the gun housing 101 with one hand, the thumb of that hand can rotate the take-up reel 301 clockwise to pull the elastic cord 202 back, thereby tightening the loop 201.

[0042] The shearing assembly 4 includes a cutter 401, a pusher rod 402 fixed to the rear end of the cutter 401, and a trigger 403 rotatably mounted on the gun housing 101 and used to apply pressure to the pusher rod 402. When the trigger 403 is pulled, the trigger 403 pushes the pusher rod 402 forward, and the cutter 401 moves forward in sync to cut the elastic wire 202.

[0043] The push assembly 5 includes a push sleeve 501 that is slidably sleeved outside the barrel 102 to push out the ring 201 at the front end of the barrel 102, and a push rod 502 for applying pressure to the push sleeve 501 and extending rearward out of the gun case 101. Pressing the push rod 502 pushes the push sleeve 501 forward, and a relative movement occurs between the push sleeve 501 and the barrel 102, thereby pushing out the ring 201 on the barrel 102.

[0044] During operation, the operator first holds the gun case 101 and presses the push rod 502. The push rod 502 pushes the push sleeve 501 forward, causing relative movement between the push sleeve 501 and the gun barrel 102. This pushes the ring 201 on the gun barrel 102 onto the lesion. Then, the thumb rotates the take-up reel 301 clockwise to pull the elastic line 202 back and tighten the ring 201. Finally, the index finger pulls the trigger 403, which pushes the push knife rod 402 forward. The cutter 401 moves forward simultaneously to cut the elastic line 202, completing the ligation. This application achieves take-up by rotating the take-up reel 301 at the rear of the gun case 101 with the thumb and cuts the line by pulling the trigger 403 with the index finger. The entire process can be completed with only one hand, simplifying the operation, saving time and effort, and the overall structure is simple and lightweight.

[0045] In some examples, the front end of the push sleeve 501 is formed with a blade feeding channel 5011 for accommodating the cutter 401. The blade feeding channel 5011 includes two spaced baffles protruding from the push sleeve 501, and the front end of the blade feeding channel 5011 has a chamfer to avoid unintended cutting of the elastic line 202. The blade feeding channel 5011 and the cutter 401 are respectively formed with a protrusion 4011 and a groove 5012 for sliding of the protrusion 4011. The sliding cooperation between the protrusion 4011 and the groove 5012 can guide the movement of the cutter 401. The two ends of the groove 5012 can limit the stroke of the cutter 401. In this embodiment, the protrusion 4011 is located on the cutter 401, and the groove 5012 is located on the blade feeding channel 5011.

[0046] In some examples, the shearing assembly 4 further includes a pressure block 404 located between the push rod 402 and the trigger 403, and a first elastic element 405 sleeved on the push rod 402. The first elastic element 405 may be a spring. A support portion 1011 protrudes from the inside of the gun housing 101 to allow the push rod 402 to pass through and support it. One end of the first elastic element 405 abuts against the pressure block 404, and the other end abuts against the support portion 1011. The pressure block 404 is sleeved on the outside of the push rod 502 and protrudes to form a lug. The gun case 101 has a slide rail for the lug to slide in. The lug cooperates with the slide rail. At the same time, the pressure block 404 and the push rod 502 cooperate to guide the forward and backward movement of the pressure block 404. When the trigger 403 is pulled, the trigger 403 applies pressure to the push rod 402 through the pressure block 404. The cutter 401 moves forward to cut. At this time, the first elastic element 405 is compressed. After the cutting is completed, the trigger 403 is released. The trigger 403 releases the pressure on the pressure block 404, and the pressure block 404 returns to its original position under the action of the first elastic element 405.

[0047] In some examples, the ligator further includes a negative pressure assembly 6, which includes a negative pressure tube 601 and a ventilation tube 602 connected between the barrel 102 and the negative pressure tube 601. The barrel 102, the ventilation tube 602 and the negative pressure tube 601 are all plugged into each other and the plugged parts are all equipped with seals. A connector 603 is installed at the end of the negative pressure tube 601 away from the ventilation tube 602. The connector 603 extends out of the gun shell 101 to connect to a negative pressure generator. The negative pressure generator can be a negative pressure pump. When the negative pressure pump is turned on, a negative pressure environment is formed in the negative pressure tube 601, the ventilation tube 602 and the barrel 102. The front end of the barrel 102 is an adsorption port. Under the action of negative pressure, the adsorption port draws in the lesion.

[0048] In some examples, the trigger 403 extends toward the push rod 502 to form at least two push claws 4031 for applying pressure to the pressure block 404. The at least two push claws 4031 are distributed on both sides of the push rod 502. A groove is formed on the side of the push rod 502 near the trigger 403. The trigger 403, push claws 4031 and groove enclose a limiting cavity 406 for limiting the negative pressure tube 601. That is, the limiting cavity 406 limits the end of the negative pressure tube 601 near the vent tube 602, and the remaining parts are limited by the ribs inside the gun case 101.

[0049] In some examples, the push assembly 5 further includes a transition sleeve 503 located between the push sleeve 501 and the push rod 502. The transition sleeve 503 is sleeved on the outside of the vent pipe 602 and a second elastic element 504 is installed between them. The second elastic element 504 may be a spring. When the push rod 502 is pressed, and the push rod 502 drives the push sleeve 501 forward through the transition sleeve 503, the second elastic element 504 is compressed. When the ring sleeve 201 is pushed out and the pressing on the push rod 502 is released, the transition sleeve 503 can be reset under the elastic force of the second elastic element 504.

[0050] In some examples, the rear end of the barrel 102 is inserted into the vent pipe 602, and the barrel 102 and the vent pipe 602 are respectively formed with elastic locking hooks 1021 and locking grooves 6021 for the elastic locking hooks 1021 to engage. In this embodiment, the elastic locking hooks 1021 are located on the barrel 102, and the locking grooves 6021 are located on the vent pipe 602. The number of elastic locking hooks 1021 and locking grooves 6021 corresponds, and each elastic locking hook 1021 is engaged in its corresponding locking groove 6021. The elastic locking hook 1021 includes a rod extending axially from the rear end of the barrel 102 and a hook portion protruding from the end of the rod opposite to the barrel 102.

[0051] In some examples, the push sleeve 501 extends rearward to form a plurality of elastic buckles 5013, the transition sleeve 503 extends forward to form a plurality of push plates 5031, the rear end of the barrel 102 forms a through groove 1022 into which the push plates 5031 extend, and a locking block 505 that engages with the elastic buckles 5013 is slidably installed in the through groove 1022. The locking block 505 has a slot for the elastic buckles 5013 to engage, and a limiting step is formed in the through groove 1022 to limit the forward movement distance of the locking block 505. When the push sleeve rod 502 moves forward, the push sleeve 501 is pushed forward synchronously by the push plates 5031 and the locking blocks 505.

[0052] In some examples, the barrel 102 includes a large-diameter section 1023 at the front end, a small-diameter section 1024 at the rear end, and a connecting section 1025 between the two. The connecting section 1025 has a tapered structure. The ring 201 is fitted onto the large-diameter section 1023. The large-diameter section 1023 has multiple spaced anti-slip grooves along its circumference to prevent the ring 201 fitted onto the large-diameter section 1023 from slipping off unexpectedly. The small-diameter section 1024 protrudes radially to form several convex ridges 1026 for supporting the push sleeve 501, thereby ensuring the coaxiality of the barrel 102 and the push sleeve 501.

[0053] In some examples, a release button 7 is movably provided on the gun housing 101 for extending into the lock groove 6021 to push out the elastic locking hook 1021. One end of the release button 7 is fixed inside the gun housing 101, and the other end is suspended and protrudes outward from the gun housing 101 to form a pressing end. The pressing end has a push-out part for extending into the lock groove 6021. The push-out part extends into the lock groove 6021 from the outside to the inside, thereby pushing out the elastic locking hook 1021 that extends into the lock groove 6021 from the inside to the outside.

[0054] Working principle:

[0055] First, the operator holds the gun casing 101, aligns the suction port at the front end of the gun barrel 102 with the lesion, and turns on the negative pressure generator. A negative pressure environment is formed inside the gun barrel 102, and the suction port draws the lesion in under the action of negative pressure.

[0056] Then the operator presses the push sleeve rod 502 with his thumb. The push sleeve rod 502 pushes the push sleeve 501 forward through the transition sleeve 503. The push sleeve 501 moves relative to the barrel 102 to push the ring sleeve 201 on the barrel 102 onto the lesion. At this time, the thumb releases the push sleeve rod 502.

[0057] Next, flick the take-up reel 301 with your thumb to rotate it clockwise, pulling the elastic line 202 back so that the loop 201 can be tightened.

[0058] Finally, the index finger pulls the trigger 403, which pushes the pusher rod 402 forward through the pressure block 404. The cutter 401 moves forward simultaneously to cut the elastic cord 202 and complete the bandaging.

[0059] 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 manual tensioning and cutting type ligator, characterized in that: include: The gun assembly (1) includes a gun case (101) and a barrel (102) fixed to the front end of the gun case (101); The elastic cord assembly (2) includes a ring (201) and an elastic cord (202) extending rearward from the ring (201) to control the ring diameter of the ring (201); The take-up assembly (3) includes a take-up reel (301) rotatably mounted on the rear end of the gun housing (101) with a portion of the take-up reel (301) extending out of the gun housing (101), and the rear end of the elastic line (202) is fixed to the take-up reel (301); The shearing assembly (4) includes a cutter (401), a pusher rod (402) fixed to the rear end of the cutter (401), and a trigger (403) rotatably mounted on the gun housing (101) for applying pressure to the pusher rod (402); The push assembly (5) includes a push sleeve (501) that is slidably sleeved outside the barrel (102) to push out the ring (201) at the front end of the barrel (102) and a push rod (502) for applying pressure to the push sleeve (501) and extending rearward from the gun case (101).

2. The manual tensioning and cutting type banding device according to claim 1, characterized in that: The front end of the push sleeve (501) is formed with a knife feeding channel (5011) for accommodating the cutter (401), and the knife feeding channel (5011) and the cutter (401) are respectively formed with a protrusion (4011) and a groove (5012) for sliding the protrusion (4011).

3. The manual tensioning and cutting type ligator according to claim 1, characterized in that: The shearing assembly (4) further includes a pressure block (404) located between the push rod (402) and the trigger (403) and a first elastic element (405) sleeved on the push rod (402). The gun housing (101) has a protruding support portion (1011) for the push rod (402) to pass through and support it. One end of the first elastic element (405) abuts against the pressure block (404) and the other end abuts against the support portion (1011).

4. A manual tensioning and cutting type ligator according to claim 3, characterized in that: The banding device also includes a negative pressure assembly (6), which includes a negative pressure tube (601) and a vent tube (602) connected between the barrel (102) and the negative pressure tube (601). A connector (603) is installed at one end of the negative pressure tube (601) away from the vent tube (602), and the connector (603) extends out of the gun case (101).

5. A manual tensioning and cutting type ligator according to claim 4, characterized in that: The trigger (403) extends toward the pressure block (404) and forms at least two push claws (4031) for applying pressure to the pressure block (404). The push sleeve rod (502) has a groove on the side near the trigger (403). The trigger (403), push claws (4031) and groove together form a limiting cavity (406) for limiting the negative pressure tube (601).

6. A manual tensioning and cutting type ligator according to claim 4, characterized in that: The pushing assembly (5) further includes a transition sleeve (503) located between the pushing sleeve (501) and the pushing rod (502), the transition sleeve (503) being sleeved on the outside of the vent pipe (602) and a second elastic element (504) being installed between the two.

7. A manual tensioning and cutting type ligator according to claim 4, characterized in that: The rear end of the gun barrel (102) is inserted into the gas tube (602), and the gun barrel (102) and the gas tube (602) are respectively provided with elastic locking hooks (1021) and locking grooves (6021) for the elastic locking hooks (1021) to be engaged.

8. A manual tensioning and cutting type ligator according to claim 6, characterized in that: The push sleeve (501) extends rearward to form a plurality of elastic buckles (5013), the transition sleeve (503) extends forward to form a plurality of push plates (5031), the rear end of the barrel (102) forms a through groove (1022) into which the push plate (5031) extends, and a locking block (505) that engages with the elastic buckles (5013) is slidably installed in the through groove (1022).

9. A manual tensioning and cutting type ligator according to claim 1, characterized in that: The barrel (102) includes a large-diameter section (1023) at the front end, a small-diameter section (1024) at the rear end, and a connecting section (1025) between the two. The ring sleeve (201) is fitted on the large-diameter section (1023), and the small-diameter section (1024) protrudes radially to form a plurality of protruding ridges (1026) for supporting the push sleeve (501).

10. A manual tensioning and cutting type ligator according to claim 7, characterized in that: The gun casing (101) is movably provided with a release button (7) for extending into the lock groove (6021) to push out the elastic lock hook (1021).

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