Ligator

Abstract

The present invention provides a ligation device, comprising: a shell, a push tube is provided at the front end of the shell; a suction tube is inserted into the push tube, and the front end of the suction tube passes through the front end of the push tube; a negative pressure device is arranged inside the shell, and the air suction port of the negative pressure device is connected with the rear end of the suction tube; a graduated cylinder, comprising a cylinder body, a piston member is provided inside the cylinder body, the piston member is fixedly arranged, the piston member divides the cylinder body into two cylinder cavities, and the air suction port of the negative pressure device is connected with one of the cylinder cavities; the cylinder body can move relative to the shell, and a graduated part corresponding to the movement displacement of the cylinder body is provided on the shell; and a ligation member is sleeved on the front end of the suction tube. The present invention enables the staff to know the amount of negative pressure drawn, has a simple structure, and is easy to use, so as to perform the ligation operation more accurately.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to a ligation device. Background Art

[0002] Anorectal ligation can treat internal hemorrhoids and external hemorrhoids in clinical surgery. After ligating all the relaxed superficial venous networks in the anal canal, the hemorrhoids will have no blood supply, and the hemorrhoids without blood supply will disappear, thereby curing. Anorectal ligation can greatly shorten the operation time compared to instrument anastomosis, and there is no trauma. At the same time, it reduces the difficulty of the operation and improves the quality of the operation. In addition, the use of anorectal ligation not only facilitates the surgical process, but also reduces the bleeding of patients and relieves the fatigue of doctors. When using anorectal ligation, there is generally a process of drawing negative pressure. How to enable the staff to know the amount of negative pressure drawn is a problem that needs to be solved by technical personnel in this field. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a ligation device.

[0004] In order to solve the above technical problems, the present invention provides a ligation device, comprising: a shell, a push tube is provided at the front end of the shell; a suction tube is inserted into the push tube, and the front end of the suction tube passes through the front end of the push tube; a negative pressure device is arranged inside the shell, and the air suction port of the negative pressure device is connected with the rear end of the suction tube; a scale cylinder, comprising a cylinder body, a piston member is provided inside the cylinder body, and the piston member is fixedly arranged, and the piston member divides the cylinder body into two cylinder cavities, and the air suction port of the negative pressure device is connected with one of the cylinder cavities; the cylinder body can move relative to the shell, and the shell is provided with a scale portion corresponding to the movement displacement of the cylinder body; a ligation member is sleeved on the front end of the suction tube.

[0005] Preferably, the front end of the piston member is connected to a piston rod, and both the piston rod and the piston member are hollow structures. The piston rod is connected to the piston member, and the piston rod is connected to the air suction port of the negative pressure device; the two cylinder chambers are arranged in sequence from front to back, and the cylinder chamber at the rear is connected to the piston member.

[0006] Furthermore, the rear end of the straw is inserted into the piston rod.

[0007] Furthermore, a protrusion is provided at the rear end of the straw, the protrusion is located in the piston rod, and the structure of the cross section of the protrusion is the same as the structure of the cross section inside the piston rod.

[0008] Furthermore, a gas introduction channel is provided on the shell, a pressure relief button is provided on the inlet of the gas introduction channel, and the outlet of the gas introduction channel is connected to the piston rod.

[0009] Furthermore, the ligation device further comprises a ligation release button movably mounted on the shell, the ligation release button can move relative to the shell, and the ligation release button is connected to the suction tube.

[0010] Preferably, the ligating member comprises a wire taking-up device and a ligating wire; the wire taking-up device is mounted on the shell; one end of the ligating wire is wound around the wire taking-up device, and the other end of the ligating wire is tied with a slipknot to form a loop, and the loop is tightly sleeved on the front end of the straw.

[0011] Preferably, the tying member is an elastic ring arranged at the front end of the straw.

[0012] Preferably, the ligation device further comprises a negative pressure driving component, which comprises a handle movably mounted on the shell, one end of the fork is movably connected to the handle, and the other end of the fork is connected to the pressure extraction piston of the negative pressure device.

[0013] Preferably, the cylinder body moves along the front-rear direction of the ligation device; the scale portion is a long scale bar corresponding to the moving path of the cylinder body, or the scale portion is a scale plate corresponding to the moving displacement of the cylinder body.

[0014] As described above, the ligation device of the present invention has the following beneficial effects:

[0015] When the present invention is used, the suction tube of the ligation device is aimed at the hemorrhoids that need to be ligated, and after the air suction port of the negative pressure device performs an air suction action, the hemorrhoids are sucked into the suction tube under the action of the negative pressure, and at the same time, due to the fixed arrangement of the piston member, the air pressure in the cylinder cavity connected to the air suction port of the negative pressure device is reduced, and the cylinder body will move, and the staff can obtain the movement amount of the cylinder body through the scale part corresponding to the movement displacement of the cylinder body; when the staff knows that the movement amount of the cylinder body reaches a preset amount, the air suction amount of the negative pressure device reaches the preset requirement, and then the staff can use the ligation member to perform the ligation operation on the hemorrhoids; the present invention can enable the staff to know the amount of negative pressure, has a simple structure, is easy to use, and can perform the ligation operation more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the internal cross-sectional structure of the ligation device of this embodiment.

[0017] Figure 2 Shown is a schematic three-dimensional structure diagram of a side of the ligation device of this embodiment where no pressure relief button is provided.

[0018] Figure 3 Shown is a side structural schematic diagram of a side where a pressure relief button is provided on the ligation device of this embodiment.

[0019] Figure 4 Display as Figure 3 Schematic diagram of the cross-sectional structure along the AA direction.

[0020] Figure 5 Shown is a schematic diagram of the top view of the structure of the ligation device of this embodiment.

[0021] Figure 6 It is a schematic side structural diagram of a case where a marking piece is provided on the scale portion of the ligation device of this embodiment.

[0022] Figure 7 It is a schematic side structural diagram showing the case where the scale portion of the ligation device of this embodiment is a scale plate.

[0023] Figure 8 The ligation piece of the ligation device of this embodiment is a three-dimensional structural schematic diagram of a ligation ring.

[0024] Description of Figure Numbers

[0025] 100 Shell

[0026] 101 Push pipe

[0027] 110 Gas inlet channel

[0028] 200 Straws

[0029] 210 raised part

[0030] 300 Negative pressure device

[0031] 310 Air extraction port

[0032] 320 Pumping Piston

[0033] 330 Trachea

[0034] 400 scale cylinder

[0035] 410 Cylinder body

[0036] 420 Piston parts

[0037] 430 Cylinder Chamber

[0038] 440 Piston rod

[0039] 500 scale part

[0040] 510 scale bar

[0041] 511 Limit quantity marking tape

[0042] 512 Limit quantity marking parts

[0043] 520 Dial

[0044] 600 tying pieces

[0045] 610 Take-up device

[0046] 620 Tie wire

[0047] 621 Ring

[0048] 700 Pressure relief button

[0049] 800 Ligation Release Button

[0050] 910 handle

[0051] 920 Fork DETAILED DESCRIPTION

[0052] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0053] Please refer to the attached drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the attached drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0054] like Figures 1 to 8 As shown, the ligation device of this embodiment includes:

[0055] A housing 100, a push tube 101 is provided at the front end of the housing 100, and a rear end of the push tube 101 is fixed inside the housing 100;

[0056] The suction tube 200 is inserted into the push tube 101, and the front end of the suction tube 200 passes through the front end of the push tube 101;

[0057] The negative pressure device 300 is disposed inside the housing 100 , and the air suction port 310 of the negative pressure device 300 is connected to the rear end of the suction tube 200 ;

[0058] The graduated cylinder 400 comprises a cylinder body 410, wherein a piston 420 is disposed inside the cylinder body 410, and the piston 420 is fixedly arranged, and the piston 420 divides the cylinder body 410 into two cylinder chambers 430, and the air suction port 310 of the negative pressure device 300 is connected to one of the cylinder chambers 430; the cylinder body 410 can move relative to the housing 100, and the housing 100 is provided with a graduated portion 500 corresponding to the movement displacement of the cylinder body 410;

[0059] The tying member 600 is sleeved on the front end of the straw 200 .

[0060] When the present invention is used, the suction tube 200 of the ligation device is aimed at the hemorrhoids that need to be ligated, and after the suction port 310 of the negative pressure device 300 performs an inhalation action, the hemorrhoids are sucked into the suction tube 200 under the action of negative pressure. At the same time, since the piston member 420 is fixedly arranged, the air pressure in the cylinder chamber 430 connected to the suction port 310 of the negative pressure device 300 is reduced, and the cylinder body 410 will move. The staff can obtain the movement amount of the cylinder body 410 through the scale part 500 corresponding to the movement displacement of the cylinder body 410; when the staff knows that the movement amount of the cylinder body 410 reaches a preset amount, the suction amount of the negative pressure device 300 reaches the preset requirement, and then the staff can use the ligation member 600 to perform the ligation operation on the hemorrhoids; the present invention can enable the staff to know the amount of negative pressure, has a simple structure, is easy to use, and can perform the ligation operation more accurately.

[0061] The front end of the piston member 420 is connected to the piston rod 440. Both the piston rod 440 and the piston member 420 are hollow structures. The piston rod 440 is connected to the piston member 420, and the piston rod 440 is connected to the air suction port 310 of the negative pressure device 300. The two cylinder chambers 430 are arranged in sequence from front to back, and the cylinder chamber 430 at the rear is connected to the piston member 420. Since the piston member 420 is fixedly arranged, the piston rod 440 connected to the piston member 420 is also fixedly arranged. The piston rod 440 is connected to the air suction port 310 of the negative pressure device 300, so that the position of the air suction port 310 of the negative pressure device 300 can be stabilized during the inhalation process of the negative pressure device 300. The cylinder chamber 430 at the rear is connected to the piston member 420. When the suction port 310 of the negative pressure device 300 inhales air, the negative pressure generated is transmitted from the piston rod 440 to the cylinder chamber 430 at the rear through the piston member 420, so that the cylinder body 410 moves forward; the cylinder chamber 430 at the rear is connected to the piston member 420, which can make the structure of the present invention more compact.

[0062] The rear end of the straw 200 is inserted into the piston rod 440. The piston rod 440 is connected to the air suction port 310 of the negative pressure device 300. The rear end of the straw 200 is inserted into the piston rod 440, and the negative pressure formed by the negative pressure device 300 acts on the straw 200 and the cylinder body 410 at the same time, which makes the structure of the ligation device more compact.

[0063] The rear end of the straw 200 is provided with a protrusion 210, which is located in the piston rod 440, and the cross-sectional structure of the protrusion 210 is the same as the cross-sectional structure inside the piston rod 440. This structure enables the piston rod 440 to play a guiding role when the straw 200 moves, and ensures the sealing of the interior of the piston rod 440 when negative pressure is drawn.

[0064] The housing 100 is provided with a gas introduction channel 110, and a pressure relief button 700 is provided at the inlet of the gas introduction channel 110. The outlet of the gas introduction channel 110 is connected to the piston rod 440. The pressure relief button 700 blocks the inlet of the gas introduction channel 110; when the movement amount of the cylinder body 410 reaches a preset amount, the staff turns on the pressure relief button 700, and air enters the gas introduction channel 110 through the inlet of the gas introduction channel 110, so that the cylinder body 410 that has moved under the action of negative pressure can return to the initial position, and the hemorrhoids are separated from the suction tube 200.

[0065] The ligation device also includes a ligation release button 800 movably mounted on the housing 100. The ligation release button 800 can move relative to the housing 100, and the ligation release button 800 is connected to the suction tube 200. The ligation release button 800 can drive the suction tube 200 to move, so that the ligation member 600 can ligate the hemorrhoids. In this embodiment, the housing 100 is provided with a button movement guide groove 120 for the insertion of the ligation release button 800, and the button movement guide groove 120 is arranged along the front-to-back direction of the housing 100; the lower end of the ligation release button 800 passes through the button movement guide groove 120, and the lower end of the ligation release button 800 is connected to the rear end of the suction tube 200. The size of the lower end of the ligation release button 800 is smaller than the size of the upper end of the ligation release button 800. Stirring the ligation release button 800 can make the suction tube 200 move along the front-to-back direction of the housing 100. Since the ligation piece 600 is sleeved on the front end of the suction tube 200, when the suction tube 200 moves backward, the suction tube 200 will drive the sucked hemorrhoid to move backward. When the front end of the suction tube 200 completely enters the interior of the push tube 101, the ligation piece 600 can be directly sleeved on the hemorrhoid.

[0066] The ligation member 600 includes a wire collection device 610 and a ligation wire 620; the wire collection device 610 is installed on the housing 100; one end of the ligation wire 620 is wound around the wire collection device 610, and the other end of the ligation wire 620 is tied with a slipknot to form a loop 621, which is tightly wrapped around the front end of the straw 200. After the loop 621 is wrapped around the hemorrhoid, when the wire collection device 610 performs a wire collection action, the ligation wire 620 is tightened, so that the loop 621 has a good tightening force on the hemorrhoid. The setting of the loop 621 can make the hemorrhoids be tightly tied.

[0067] In this embodiment, the wire-receiving device 610 includes a roller 611 and a roller shaft. The roller shaft is mounted on the housing 100 and can rotate relative to the housing 100. The roller 611 is connected to the roller shaft. The undulating roller 611 can drive the roller shaft to rotate. One end of the tying wire 620 is wound around the roller shaft. When the wire-receiving action is performed, the tying wire 620 is gradually wound around the roller shaft, so that the ring 621 is gradually tightened. After the ring 621 is tightened to no elasticity, the roller 611 stops rotating.

[0068] According to another preferred embodiment of the present invention, the ligation member 600 is an elastic ring disposed at the front end of the suction tube 200. When the front end of the suction tube 200 completely enters the interior of the push tube 101, the elastic ring is directly ligated on the hemorrhoids. This structure is simple and easy to operate.

[0069] The ligation device further includes a negative pressure driving component, which includes a handle 910 movably mounted on the housing 100, one end of a fork 920 movably connected to the handle 910, and the other end of the fork 920 is connected to the suction piston 320 of the negative pressure device 300. The handle 910 moves toward the direction close to the negative pressure device 300, so that the fork 920 pushes the suction piston 320 of the negative pressure device 300 to move downward, and the suction port 310 of the negative pressure device 300 forms a negative pressure.

[0070] In this embodiment, the connection between the inner cavity of the negative pressure device 300 and the air suction port 310 of the negative pressure device 300 is an air suction check valve, and the air suction check valve will only open when negative pressure is applied. The inner cavity of the negative pressure device 300 is also provided with an exhaust check valve connected to the outside. This structure enables the positive pressure released by the negative pressure device 300 to be discharged through the exhaust check valve when the handle 910 is reset. This structure enables the handle 910 to perform multiple suction actions on the negative pressure device 300 through the fork 920. The inner cavity of the negative pressure device 300 and the air suction port 310 of the negative pressure device 300 are connected through an air pipe 330.

[0071] The cylinder body 410 moves along the front-back direction of the ligation device; the scale part 500 is a long scale bar 510 corresponding to the moving path of the cylinder body 410, or the scale part 500 is a scale plate 520 corresponding to the moving displacement of the cylinder body 410. The staff can understand the negative pressure suction amount by observing the numbers on the long scale bar 510 or the numbers on the scale plate 520. The long scale bar 510 is provided with a limit amount marking belt 511 or a limit amount marking member 512.

[0072] In this embodiment, a limit value marking band 511 is provided on the long scale bar 510 .

[0073] The method for using the ligation device of this embodiment comprises the following steps:

[0074] 1) The suction tube 200 is aligned with the hemorrhoids to be ligated, and the handle 910 is pressed. The handle 910 moves toward the negative pressure device 300, and the handle 910 drives the fork 920 to move. The fork 920 drives the suction piston 320 of the negative pressure device 300 to move downward. The negative pressure device 300 performs a suction action, and the air tube 330 sucks air from the suction tube 200 and the cylinder chamber 430 at the rear. Due to the air pressure difference, the hemorrhoids are sucked into the suction tube 200, and the cylinder body 410 moves toward the front of the ligation device. After the handle 910 is pressed to the limit position, it is released to reach the initial position, and the suction piston 320 of the negative pressure device 300 is reset;

[0075] 2) Repeat step 1) until the displacement of the cylinder body 410 reaches a preset amount through the scale portion 500 corresponding to the displacement of the cylinder body 410, and then proceed to step 3); when the displacement of the cylinder body 410 reaches the preset amount, the cylinder body 410 reaches the limit amount marking band 511 on the long scale bar 510;

[0076] 3) The ligation release button is turned, the trachea 330 drives the hemorrhoids to move backward, and the ring 621 or rubber ring is put on the hemorrhoids;

[0077] When the ring 621 is put on the hemorrhoid, the index finger moves the roller 611 on the wire-receiving device 610 backward, so that the roller rotates with the roller 611, and the roller 611 is rotated, and the ligature wire 620 is wound around the rotating roller and gradually tightened until the ring 621 is tied so tightly that it has no elasticity and stops rotating; when the rubber ring is put on the hemorrhoid, the rubber ring automatically ties the hemorrhoid due to its own elasticity;

[0078] 4) Press one end of the pressure relief button 700 to lift the other end of the pressure relief button 700, and external air enters the straw 200 and the piston rod 440, and the hemorrhoids are separated from the straw 200;

[0079] 5) When the ring 621 is put on the hemorrhoids, the ligature 620 is cut: the ligature 620 is cut at the edge of the hemorrhoids that are tied tightly;

[0080] 6) When the ring sleeve 621 is put on the hemorrhoids, remove the ligature 620 and the wire collection device 610, and replace them with new ones; when the rubber ring is put on the hemorrhoids, replace it with a new one.

[0081] In summary, the present invention effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0082] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A ligation device, characterized in that: include: A housing (100), wherein a push tube (101) is provided at the front end of the housing (100); A suction tube (200) is inserted into the push tube (101), and a front end of the suction tube (200) passes through a front end of the push tube (101); A negative pressure device (300) is disposed inside the housing (100), and an air suction port (310) of the negative pressure device (300) is connected to a rear end of the suction tube (200); The graduated cylinder (400) comprises a cylinder body (410), wherein a piston member (420) is provided inside the cylinder body (410), wherein the piston member (420) is fixedly arranged, and wherein the piston member (420) divides the cylinder body (410) into two cylinder chambers (430), wherein the air suction port (310) of the negative pressure device (300) is connected to one of the cylinder chambers (430); the cylinder body (410) is movable relative to the housing (100), and the housing (100) is provided with a graduated portion (500) corresponding to the displacement of the cylinder body (410); A tying member (600) is sleeved on the front end of the straw (200); The front end of the piston member (420) is connected to a piston rod (440), and both the piston rod (440) and the piston member (420) are hollow structures. The piston rod (440) is in communication with the piston member (420), and the piston rod (440) is in communication with the air suction port (310) of the negative pressure device (300); the two cylinder chambers (430) are arranged in sequence from front to back, and the cylinder chamber (430) at the rear is in communication with the piston member (420); The ligation device further comprises a ligation release button (800) movably mounted on the shell (100), the ligation release button (800) being movable relative to the shell (100), and the ligation release button (800) being connected to the suction tube (200); the shell (100) being provided with a button movement guide groove (120) for the ligation release button (800) to be inserted, and the button movement guide groove (120) being arranged along the front-rear direction of the shell (100); the lower end of the ligation release button (800) passing through the button movement guide groove (120), and the lower end of the ligation release button (800) being connected to the rear end of the suction tube (200).

2. The ligation device according to claim 1, characterized in that: The rear end of the suction tube (200) is inserted into the piston rod (440).

3. The ligation device according to claim 2, characterized in that: A protrusion (210) is provided at the rear end of the straw (200), the protrusion (210) is located in the piston rod (440), and the cross-sectional structure of the protrusion (210) is the same as the cross-sectional structure inside the piston rod (440).

4. The ligation device according to claim 2, characterized in that: The housing (100) is provided with a gas introduction channel (110), the inlet of the gas introduction channel (110) is provided with a pressure relief button (700), and the outlet of the gas introduction channel (110) is connected to the piston rod (440).

5. The ligation device according to claim 1, characterized in that: The ligating member (600) comprises a wire taking-up device (610) and a ligating wire (620); the wire taking-up device (610) is installed on the housing (100); one end of the ligating wire (620) is wound around the wire taking-up device (610), and the other end of the ligating wire (620) is tied with a slipknot to form a loop (621), and the loop (621) is tightly wrapped around the front end of the straw (200).

6. The ligation device according to claim 1, characterized in that: The tying member (600) is an elastic ring arranged at the front end of the straw (200).

7. The ligation device according to claim 1, characterized in that: It also includes a negative pressure driving component, which includes a handle (910) movably mounted on the housing (100), one end of a fork (920) movably connected to the handle (910), and the other end of the fork (920) is connected to the suction piston (320) of the negative pressure device (300).

8. The ligation device according to claim 1, characterized in that: The cylinder body (410) moves along the front-to-back direction of the ligation device; the scale portion (500) is a long scale bar (510) corresponding to the moving path of the cylinder body (410), or the scale portion (500) is a scale plate (520) corresponding to the moving displacement of the cylinder body (410).

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