CN218979111U - Wire winding mechanism of ligature device - Google Patents

Abstract

The utility model provides a wire winding mechanism of a ligature device, which comprises: the pull rope trigger is arranged on the shell through a rotating shaft; the tension spring is positioned in front of the pull rope trigger; the two pawl modules are positioned below the pull rope rod; each pawl module comprises a fixed plate, an elastic sheet and a pawl body; the front pawl module of the two pawl modules is a driving pawl module, and the rear pawl module of the two pawl modules is a positioning pawl module; the limiting block is positioned between the pull rope rod and the driving claw part module. The utility model relates to a wire collecting mechanism of a ligature device, which can automatically control a doctor to tighten a ligature during an operation.

Description

Wire winding mechanism of ligature device

Technical Field

The utility model relates to the technical field of ligation devices, in particular to a wire winding mechanism of a ligation device.

Background

At present, hemorrhoid ligation surgery gradually replaces anastomat hemorrhoid mucosa circular cutting surgery by virtue of convenience and safety, and has become a preferred scheme for hemorrhoid treatment at home and abroad. The hemorrhoid ligation operation principle is that a pushing device is used for pushing a ring buckle formed at the front end of a ligation wire to a hemorrhoid, so that the hemorrhoid blood supply is blocked, the hemorrhoid blood supply is made to be ischemic and necrotic and fall off automatically, and the whole process is free of wounds, convenient and quick, and can be used along with treatment. However, because of the mechanical property of the ligature, the treatment effect of the ligature is affected due to the magnitude of tightening force in the process of tightening the ligature, the ligature is easy to cause bleeding of hemorrhoids to cause infection, and serious complications can be caused when the ligature is serious; too loose can easily lead the ring buckle to fall off too early, and the treatment effect can not be achieved.

How to design a wire collecting mechanism of a ligature device which can automatically control and tighten the ligature by a doctor in the operation process is a problem which needs to be solved by the person skilled in the art.

Disclosure of Invention

In view of the above-described drawbacks of the prior art, the present utility model solves the technical problem of providing a wire takeup mechanism of a ligature device that can autonomously control tightening of a ligature by a doctor during an operation.

To achieve the above and other related objects, the present utility model provides a wire winding mechanism of a ligature device, which is disposed on a casing of the ligature device, wherein a guide groove is disposed on the casing, and the guide groove is disposed along a horizontal direction; a pull rope rod is arranged in the shell, a rod piece rack is arranged on the lower surface of the pull rope rod, the rod piece rack comprises a plurality of ratchet parts which are arranged at intervals, tooth grooves are formed between two adjacent ratchet parts, each tooth groove is obliquely arranged relative to the horizontal direction, and the lower end of each tooth groove faces the front end of the shell;

this take-up mechanism includes:

the pull rope trigger is arranged on the shell through a rotating shaft and can rotate around the rotating shaft;

the tension spring is positioned in front of the pull rope trigger, the front end of the tension spring is connected with the shell, and the rear end of the tension spring is connected with the front side of the pull rope trigger;

the two pawl modules are positioned below the pull rope rod; each pawl module comprises a fixed plate, an elastic sheet and a pawl body, wherein the lower end of the pawl body is arranged on the fixed plate, and the pawl body can rotate relative to the fixed plate; one side of the elastic sheet is connected with the fixed plate, and the other side of the elastic sheet supports the pawl body; the front pawl module of the two pawl modules is a driving pawl module, and the rear pawl module of the two pawl modules is a positioning pawl module; the fixed plate of the driving claw module is arranged in the guide groove, the lower end of the pawl body of the driving claw module is hinged with the upper end of a connecting rod, and the lower end of the connecting rod is hinged with the rear side of the pull rope trigger; the fixed plate of the positioning claw module is arranged on the shell;

the limiting block is positioned between the pull rope rod and the driving claw module;

when the wire winding mechanism is in an initial state, the limiting block presses the pawl body of the driving pawl part module; the pawl body of the positioning pawl part module is inserted into the tooth slot of the pull rope rod;

when the wire winding mechanism is in a wire winding state, the pull rope trigger is buckled, the pull rope trigger rotates, the pull rope trigger drives the pawl body of the driving pawl part module to move backwards, the pawl body of the driving pawl part module moves out from the lower part of the limiting block, the fixing plate of the driving pawl part module moves in the guide groove, the pawl body of the driving pawl part module is inserted into the tooth groove of the pull rope rod, and the pawl body of the driving pawl part module pushes the pull rope rod to move backwards.

Preferably, the wire winding mechanism of the ligature device further comprises a pressing plate button, wherein the pressing plate button is installed on the casing, the pressing plate button can move along the vertical direction, and the pawl body of the positioning pawl part module is located on a path of downward movement of the pressing plate button.

Preferably, in the pawl module, the top surface of the fixing plate is a plane, a receiving groove is arranged on the top surface of the fixing plate, and the extending direction of the receiving groove is inclined relative to the top surface of the fixing plate; the lower end of the pawl body is arranged in the receiving groove; the front slot wall 512 of the receiving slot limits forward rotation of the pawl body.

Preferably, the lower part of the limiting block is provided with a limiting surface; when the wire winding mechanism is in an initial state, the limiting surface presses the pawl body of the driving pawl part module.

As described above, the wire winding mechanism of the ligature device has the following beneficial effects:

when the wire collecting mechanism of the loop ligature device is in an initial state, the driving claw module is in an initial position, the limiting block presses the pawl body of the driving claw module, the pawl body of the positioning claw module is in an ejecting state, namely, the pawl body of the positioning claw module is inserted into a tooth slot of the stay wire rod, so that the pawl body of the positioning claw module can lock a rod piece rack of the stay wire rod; when the wire collecting mechanism is in a wire collecting state, the pull rope trigger is triggered to rotate, the pull rope trigger drives the pawl body of the driving claw module to move backwards, the pawl body of the driving claw module slides out of an initial position, namely the pawl body of the driving claw module moves out of the lower part of the limiting block, the fixing plate of the driving claw module moves in the guide groove, the pawl body of the driving claw module pops out, the pawl body of the driving claw module is inserted into a tooth socket of the pull rope rod, and the pawl body of the driving claw module pushes the pull rope rod to move backwards, so that the pull rope rod can pull a connected ligature, a loop at the front end of the ligature is tightened, and at the moment, the pawl body of the positioning claw module is in a pop-up state to prevent the pull rope rod from sliding backwards; after the medical staff loosens the pull rope trigger, the restoring force of the tension spring enables the pull rope trigger to reach a recovery state, and as the pull rope trigger is pulled once, the pawl body of the driving claw module pushes the pull rope rod to move backwards for a certain distance, the medical staff can control the times of pulling the pull rope trigger according to the needs, and tighten the ligature slowly so as to control the tightness degree of hemorrhoid ligation; the wire winding mechanism can be completed by pulling the pull rope trigger by the index finger of a single hand, is convenient for single-hand operation, saves labor and is comfortable to operate; the utility model relates to a wire collecting mechanism of a ligature device, which can automatically control a doctor to tighten a ligature during an operation.

Drawings

FIG. 1 is a schematic side view showing the inside of a housing of the ligature device of the present embodiment.

Fig. 2 is a schematic structural view of a wire winding mechanism of the ligation device according to the embodiment.

FIG. 3 is a schematic perspective view showing the inside of the casing of the ligature device of the present embodiment.

Fig. 4 is an enlarged schematic view of the structure at a in fig. 3.

Fig. 5 is a schematic perspective view showing the structure of the casing of the ligature device of the present embodiment.

Fig. 6 is a schematic top perspective view of the pawl module of the ligature device of the present embodiment.

Fig. 7 is a schematic side perspective view showing a pawl module of the ligature device of the present embodiment.

FIG. 8 is a schematic perspective view showing a pressure plate button provided on the ligature apparatus of the present embodiment.

Description of the reference numerals

10. Tying wire

11. Ring buckle

20. Negative pressure mechanism

100. Casing of machine

110. Guide groove

120. Suction pipe

130. Positioning groove

200. Pull rope rod

210. Rod piece rack

211. Ratchet part

212. Tooth slot

300. Pull rope trigger

310. Rotating shaft

400. Tension spring

501. Driving claw module

502. Positioning claw module

510. Fixing plate

511. Bearing groove

512. Front groove wall

520. Spring plate

530. Pawl body

531. Claw connecting part

600. Connecting rod

700. Limiting block

710. Limiting surface

800. Press plate button

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.

Please refer to the accompanying drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the utility model, are not intended to be critical to the essential characteristics of the utility model, but are intended to fall within the spirit and scope of the utility model. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.

As shown in fig. 1 to 8, the wire winding mechanism of the ligature device of the present embodiment is disposed on a casing 100 of the ligature device, a guide groove 110 is disposed on the casing 100, and the guide groove 110 is disposed along a horizontal direction; the pull rope rod 200 is installed in the casing 100, a rod rack 210 is arranged on the lower surface of the pull rope rod 200, the rod rack 210 comprises a plurality of ratchet parts 211 which are arranged at intervals, tooth grooves 212 are formed between two adjacent ratchet parts 211, each tooth groove 212 is obliquely arranged relative to the horizontal direction, and the lower end of each tooth groove 212 faces the front end of the casing 100;

this take-up mechanism includes:

a pull-cord trigger 300 mounted on the casing 100 through a rotation shaft 310, the pull-cord trigger 300 being rotatable about the rotation shaft 310;

a tension spring 400 positioned in front of the pull-cord trigger 300, wherein the front end of the tension spring 400 is connected with the casing 100, and the rear end of the tension spring 400 is connected with the front side of the pull-cord trigger 300;

both pawl modules are located below the pull rod 200; each pawl module comprises a fixed plate 510, a spring plate 520 and a pawl body 530, wherein the lower end of the pawl body 530 is mounted on the fixed plate 510, and the pawl body 530 can rotate relative to the fixed plate 510; one side of the elastic sheet 520 is connected with the fixing plate 510, and the other side of the elastic sheet 520 supports the pawl body 530; the front one of the two pawl modules is a driving pawl module 501, and the rear one of the two pawl modules is a positioning pawl module 502; the fixing plate 510 of the driving claw module 501 is disposed in the guide groove 110, the lower end of the pawl body 530 of the driving claw module 501 is hinged with the upper end of a connecting rod 600, and the lower end of the connecting rod 600 is hinged with the rear side of the pull rope trigger 300; the fixing plate 510 of the positioning pawl module 502 is mounted on the housing 100;

a stopper 700 located between the pull cord lever 200 and the driving claw module 501;

when the wire winding mechanism is in an initial state, the limiting block 700 presses the pawl body 530 of the driving pawl module 501; the pawl body 530 of the positioning pawl module 502 is inserted into the tooth slot 212 of the pull rod 200;

when the wire winding mechanism is in the wire winding state, the pull rope trigger 300 is pulled, the pull rope trigger 300 rotates, the pull rope trigger 300 drives the pawl body 530 of the driving pawl module 501 to move backwards, the pawl body 530 of the driving pawl module 501 moves out from the lower part of the limiting block 700, the fixing plate 510 of the driving pawl module 501 moves backwards in the guide groove 110, the pawl body 530 of the driving pawl module 501 is inserted into the tooth groove 212 of the pull rope rod 200, and the pawl body 530 of the driving pawl module 501 pushes the pull rope rod 200 to move backwards.

A suction pipe 120 is arranged in the casing 100 of the ligature device, the front end of the ligature wire 10 is tied into a loop 11, and the loop 11 can be sleeved on the suction pipe 120; the front part of the pull rod 200 is used for connecting the rear end of the ligation wire 10; the ligature device is also provided with a negative pressure mechanism 20, and the negative pressure mechanism 20 is connected with the inner cavity of the suction tube 120.

When the winding mechanism of the loop ligature device is in an initial state, the tension spring 400 tightens the pull rope trigger 300, the pull rope trigger 300 is in a recovery state, the driving claw module 501 is in an initial position, the limiting block 700 presses the pawl body 530 of the driving claw module 501, and the pawl body 530 of the positioning claw module 502 is in an ejection state, namely, the pawl body 530 of the positioning claw module 502 is inserted into the tooth slot 212 of the pull rope lever 200, so that the pawl body 530 of the positioning claw module 502 can lock the rod rack 210 of the pull rope lever 200.

After the negative pressure mechanism 20 adsorbs hemorrhoids, the pushing mechanism pushes out the ring buckle 11 on the suction pipe 120, and then the winding-up is started;

when the wire winding mechanism is in the wire winding state, the pull rope trigger 300 is pulled, the pull rope trigger 300 rotates, the pull rope trigger 300 drives the pawl body 530 of the drive pawl module 501 to move backwards, the pawl body 530 of the drive pawl module 501 slides out of the initial position, that is, the pawl body 530 of the drive pawl module 501 moves out from the lower part of the limiting block 700, the fixing plate 510 of the drive pawl module 501 moves in the guide groove 110, the pawl body 530 of the drive pawl module 501 pops out, the pawl body 530 of the drive pawl module 501 is inserted into the tooth groove 212 of the pull rope rod 200, and the pawl body 530 of the drive pawl module 501 pushes the pull rope rod 200 to move backwards, so that the pull rope rod 200 can pull the connected ligature 10, the ring buckle at the front end of the ligature 10 is tightened, and at the moment, the pawl body 530 of the positioning pawl module 502 is in the popping state, and the pull rope rod 200 is prevented from sliding backwards.

When the ligature 10 is tightened, the ligature 10 is cut by the doctor, the ligature of one hemorrhoid is ended, and the ligature 10 is started to be reinstalled, and the next hemorrhoid is prepared for the ligature.

After the medical staff loosens the pull rope trigger 300, the restoring force of the tension spring 400 enables the pull rope trigger 300 to reach a recovery state, and as the pawl body 530 of the driving claw module 501 pushes the pull rope rod 200 to move backwards for a certain distance after the pull rope trigger 300 is pulled once, the medical staff can control the times of pulling the pull rope trigger 300 as required, and tighten the ligature 10 slowly so as to control the tightness degree of hemorrhoid ligation; the wire winding mechanism can be completed by pulling the pull rope trigger 300 by a single-hand index finger, so that the operation by a single hand is convenient, labor is saved, and the operation is comfortable; the utility model relates to a wire collecting mechanism of a ligature device, which can automatically control and tighten a ligature 10 by a doctor in the operation process.

The driving claw module 501 is a slidable module, the driving claw module 501 is connected with the pull rope trigger 300 through a connecting rod 600 to form a connecting rod mechanism, the connecting rod 600 is hinged with the driving claw module 501 through a pin, and the connecting rod 600 is also hinged with the pull rope trigger 300 through a pin. The rotation of the pull rope trigger 300 can drive the driving claw module 501 to slide in the guide groove 110 of the casing 100, so as to push the pull rope rod 200; the positioning claw module 502 is a fixed module, and the fixing plate 510 of the positioning claw module 502 is fixedly installed in the positioning groove 130 of the casing 100, and the positioning claw module 502 is used for locking the rod rack 210 of the pull rod 200 in a reverse direction in the process that the pull rod 200 is pushed by the driving claw module 501, so that the pull rod 200 is prevented from sliding in a reverse direction.

The wire winding mechanism of the ligature device further comprises a pressing plate button 800, wherein the pressing plate button 800 is installed on the casing 100, the pressing plate button 800 can move along the vertical direction, and the pawl body 530 of the positioning pawl part module 502 is positioned on the downward moving path of the pressing plate button 800. When the pressure plate button 800 is depressed, the pressure plate button 800 depresses the pawl body 530 of the positioning pawl module 502, and the pawl body 530 of the positioning pawl module 502 is separated from the pull cord lever 200.

When the ligature 10 needs to be reinstalled, the pull rope trigger 300 is in a recovery state, the driving claw module 501 is in an initial position, the pawl body 530 of the driving claw module 501 is pressed down by the limiting block 700, at this time, the pressing plate button 800 is pressed down, the pawl body 530 of the positioning claw module 502 is pressed down, the pull rope lever 200 is in a free state, and a doctor can move the pull rope lever 200 to the front end of the suction pipe 120 so as to facilitate the installation of the ligature 10.

In the pawl module, the top surface of the fixing plate 510 is a plane, the top surface of the fixing plate 510 is provided with a receiving groove 511, and the extending direction of the receiving groove 511 is inclined relative to the top surface of the fixing plate 510; the lower end of the pawl body 530 is mounted in the receiving groove 511; the front groove wall 512 of the receiving groove 511 restricts the forward rotation of the pawl body 530, which prevents the pawl body 530 from being reversely pulled out of the fixing plate 510.

Each fixing plate 510 is provided with two receiving grooves 511, two claw connecting portions 531 are arranged at the lower part of the pawl body 530, the two claw connecting portions 531 are respectively inserted into the two receiving grooves 511, and the claw connecting portions 531 are hinged with the fixing plates 510 through connecting pins. This structure facilitates rotation of the pawl body 530 relative to the fixed plate 510.

In this embodiment, the elastic piece 520 is adhered to the fixing plate 510, and the elastic piece 520 is used to ensure that the pawl body 530 can rebound to engage with the tooth slot 212 on the pull rod 200.

A limiting surface 710 is arranged at the lower part of the limiting block 700; when the wire winding mechanism is in an initial state, the limiting surface 710 presses the pawl body 530 of the driving pawl module 501, and the structure is convenient for the limiting block 700 to stably press the pawl body 530 of the driving pawl module 501.

The limiting surface 710 is inclined with respect to the horizontal direction, and when the driving claw module 501 is at the initial position, the pressure applied by the limiting surface 710 to the pawl body 530 of the driving claw module 501 causes the pawl body 530 of the driving claw module 501 to be pressed down by the limiting surface 710, so that the pawl body 530 of the driving claw module 501 is separated from the rod rack 210.

The wire collecting mechanism of the ligature device is simple in structure and stable in operation, a doctor can independently tighten the wire collecting mechanism, the ring buckle of the ligature device 10 is adjusted to be in the most suitable tightening state, serious complications cannot be caused by overlarge or overlarge strength, the wire collecting mechanism is designed in a single-hand semi-automatic mode, excessive personnel are not needed, operation is convenient, and operation efficiency is guaranteed.

In conclusion, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (4)

1. The wire winding mechanism of the ligature device is characterized in that the wire winding mechanism is arranged on a casing (100) of the ligature device, a guide groove (110) is arranged on the casing (100), and the guide groove (110) is arranged along the horizontal direction; a pull rope rod (200) is arranged in the machine shell (100), a rod piece rack (210) is arranged on the lower surface of the pull rope rod (200), the rod piece rack (210) comprises a plurality of ratchet parts (211) which are arranged at intervals, tooth grooves (212) are formed between two adjacent ratchet parts (211), each tooth groove (212) is obliquely arranged relative to the horizontal direction, and the lower end of each tooth groove (212) faces the front end of the machine shell (100);

this take-up mechanism includes:

a pull-cord trigger (300) mounted on the casing (100) through a rotation shaft (310), the pull-cord trigger (300) being rotatable about the rotation shaft (310);

the tension spring (400) is positioned in front of the pull rope trigger (300), the front end of the tension spring (400) is connected with the machine shell (100), and the rear end of the tension spring (400) is connected with the front side of the pull rope trigger (300);

both pawl modules are positioned below the pull rope rod (200); each pawl module comprises a fixed plate (510), a spring plate (520) and a pawl body (530), wherein the lower end of the pawl body (530) is arranged on the fixed plate (510), and the pawl body (530) can rotate relative to the fixed plate (510); one side of the elastic sheet (520) is connected with the fixed plate (510), and the other side of the elastic sheet (520) supports the pawl body (530); the front one of the two pawl modules is a driving pawl module (501), and the rear one of the two pawl modules is a positioning pawl module (502); the fixed plate (510) of the driving claw module (501) is arranged in the guide groove (110), the lower end of the pawl body (530) of the driving claw module (501) is hinged with the upper end of a connecting rod (600), and the lower end of the connecting rod (600) is hinged with the rear side of the stay cord trigger (300); a fixing plate (510) of the positioning claw module (502) is mounted on the casing (100);

a limiting block (700) positioned between the pull rope rod (200) and the driving claw module (501);

when the wire winding mechanism is in an initial state, the limiting block (700) presses the pawl body (530) of the driving pawl part module (501); the pawl body (530) of the positioning pawl module (502) is inserted into the tooth slot (212) of the pull rope rod (200);

when the wire winding mechanism is in a wire winding state, the pull rope trigger (300) is triggered, the pull rope trigger (300) rotates, the pull rope trigger (300) drives the pawl body (530) of the driving pawl module (501) to move backwards, the pawl body (530) of the driving pawl module (501) moves out from the lower part of the limiting block (700), the fixing plate (510) of the driving pawl module (501) moves in the guide groove (110), the pawl body (530) of the driving pawl module (501) is inserted into the tooth groove (212) of the pull rope rod (200), and the pawl body (530) of the driving pawl module (501) pushes the pull rope rod (200) to move backwards.

2. The wire take-up mechanism of a ligature apparatus according to claim 1, wherein: the device further comprises a pressing plate button (800), wherein the pressing plate button (800) is installed on the machine shell (100), the pressing plate button (800) can move along the vertical direction, and the pawl body (530) of the positioning pawl part module (502) is positioned on a downward moving path of the pressing plate button (800).

3. The wire take-up mechanism of a ligature apparatus according to claim 1, wherein: in the pawl module, the top surface of the fixed plate (510) is a plane, a receiving groove (511) is formed in the top surface of the fixed plate (510), and the extending direction of the receiving groove (511) is inclined relative to the top surface of the fixed plate (510); the lower end of the pawl body (530) is mounted in the receiving groove (511); the front groove wall (512) of the receiving groove (511) restricts the forward rotation of the pawl body (530).

4. The wire take-up mechanism of a ligature apparatus according to claim 1, wherein: a limiting surface (710) is arranged at the lower part of the limiting block (700); when the wire winding mechanism is in an initial state, the limiting surface (710) presses the pawl body (530) of the driving pawl module (501).

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