Ligation device with negative pressure monitoring function

Abstract

The present invention provides a ligation device with a negative pressure monitoring function, comprising: a shell; a straw, which is installed inside the shell, and the rear end of the straw is provided with an air pump interface, a pressure relief interface and a sensor interface; a push tube is sleeved on the straw; the rear end of the ligation rod is connected to the inside of the shell through a rod spring; a tightening wrench is movably connected to the shell; one end of the ligation line is tied with a slipknot to form a ring sleeve, the ring sleeve is sleeved on the front end of the straw, and the end of the ligation line with a slipknot is connected to the front end of the ligation rod; a negative pressure air pump, the air extraction end of the negative pressure air pump is connected to the air pump interface of the straw, and the negative pressure air pump is connected to the air pump switch; a pressure sensor is connected to the sensor interface of the straw; a negative pressure indicator light is installed on the shell; the air pump switch, the pressure sensor and the negative pressure indicator light are all connected to a controller. The present invention can monitor the pressure in the straw, and the staff can learn the pressure situation in the straw according to the negative pressure indicator light to perform hemorrhoid ligation.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a ligation device with a negative pressure monitoring function. Background Art

[0002] Anorectal ligation devices can be used to treat internal 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, thus being cured. Anorectal ligation devices can greatly shorten the operation time compared to instrument anastomosis, and are non-invasive. At the same time, they reduce the difficulty of the operation and improve the quality of the operation. In addition, the use of anorectal ligation devices not only facilitates the surgical process, but also reduces bleeding in patients and relieves fatigue in doctors. When using anorectal ligation devices, there is generally a process of drawing negative pressure. How to design a ligation device that can monitor the amount of negative pressure suction is a problem that technicians in this field need to solve. 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 with a negative pressure monitoring function.

[0004] In order to solve the above technical problems, the present invention provides a ligation device with a negative pressure monitoring function, comprising:

[0005] shell;

[0006] A straw is installed inside the shell, with the front end of the straw passing through the shell, and the rear end of the straw is provided with an air pump interface, a pressure relief interface and a sensor interface;

[0007] A push tube, which is sleeved on the straw and can move along the axial direction of the straw;

[0008] A ligating rod, the rear end of which is inserted into the outer shell and connected to the inside of the outer shell via a rod spring; the front end of which is inserted out of the outer shell;

[0009] A tightening wrench is movably connected to the housing, and the tightening wrench supports the rear end of the tying rod;

[0010] A ligature line, one end of which is tied with a slipknot to form a loop, the loop is sleeved on the front end of the straw, and the loop abuts against the front end of the push tube, and the end of the ligature line with a slipknot is connected to the front end of the ligature pull rod;

[0011] A pressure relief button is arranged on the pressure relief interface of the straw;

[0012] A negative pressure air pump, wherein the air suction end of the negative pressure air pump is connected to the air pump interface of the suction tube, and the air pump switch is installed on the housing;

[0013] A pressure sensor connected to a sensor interface of the straw;

[0014] A negative pressure prompt component is installed on the housing;

[0015] The controller, the negative pressure air pump, the air pump switch, the negative pressure prompt component and the pressure sensor are all connected to the controller.

[0016] Preferably, the ligation device with negative pressure monitoring function further comprises a ligation release button movably mounted on the shell, wherein the ligation release button is located behind the push tube, and the ligation release button can push the push tube to move.

[0017] Preferably, the negative pressure prompt component includes a negative pressure indicator light and / or a display screen installed on the housing, and the display screen is connected to the controller.

[0018] Preferably, the ligation device with negative pressure monitoring function further comprises a power supply, which is connected to the controller; a power indicator light is provided on the housing, which is connected to the controller.

[0019] Preferably, the tightening wrench is connected to the housing via an elastic pressing piece.

[0020] Preferably, the front end of the ligating rod is provided with a groove for the end of the ligating wire to be inserted into.

[0021] Preferably, a flange is provided on the outside of the push tube, and a pipe spring is sleeved on the push tube and is located between the flange and the shell.

[0022] As described above, the ligation device with negative pressure monitoring function of the present invention has the following beneficial effects:

[0023] When the present invention is used, the front end of the suction tube is aimed at the hemorrhoids and the air pump switch is pressed. After the controller receives the signal of starting the air pump switch, the controller drives the negative pressure air pump to work, and the negative pressure air pump extracts the air in the suction tube. The air pressure in the suction tube decreases. During the process of the hemorrhoids being sucked in, the pressure change in the suction tube transmits the signal to the controller through the pressure sensor. As the pressure becomes smaller and smaller, more and more hemorrhoids are sucked in. When the controller determines that the pressure value in the suction tube reaches a predetermined range, the controller controls the negative pressure prompt component to start, giving a prompt to the medical staff that the amount of hemorrhoids sucked is sufficient and ligation can be performed; then, the push tube is driven to move forward, and the push tube pushes the ring sleeve to the suction tube. The method comprises the following steps: pulling the tightening wrench, disengaging the tightening wrench from the ligation rod, and the ligation rod retreats backwards under the action of the rod spring, pulling the ligation wire, and the ligation wire ties the hemorrhoids tightly under the action of the retreat force; pressing the air pump switch again, and the negative pressure air pump stops; releasing the pressure relief button, disengaging the pressure relief button from the straw, and the internal air pressure of the straw is consistent with the external environmental air pressure, and the ligated hemorrhoids fall out of the straw; pulling the ligation wire out of the groove of the ligation rod to complete the hemorrhoid ligation; the present invention can monitor the pressure in the straw, and the staff can obtain the pressure condition in the straw according to the negative pressure prompt component to perform hemorrhoid ligation. The ligation device of the present invention has a simple structure and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Shown is a schematic diagram of the external structure of the ligation device with negative pressure monitoring function of this embodiment.

[0025] Figure 2 Shown is a schematic cross-sectional structure diagram of the ligation device with negative pressure monitoring function of this embodiment.

[0026] Figure 3 Shown is a schematic diagram of the internal structure of the ligation device with negative pressure monitoring function of this embodiment.

[0027] Figure 4 The schematic diagram of the structure of the suction tube of the ligation device with negative pressure monitoring function in this embodiment is shown

[0028] Figure 5 Shown is a schematic diagram of the ligation device with negative pressure monitoring function of this embodiment under the control of the controller.

[0029] Figure 6 It is a schematic structural diagram showing the connection between the tightening wrench of the ligation device with negative pressure monitoring function and the elastic pressing member of this embodiment.

[0030] Description of Figure Numbers

[0031] 10 Tie wire

[0032] 20 Controller

[0033] 30 Power supply

[0034] 31 Power indicator

[0035] 100 Shell

[0036] 200 Straws

[0037] 210 Air pump interface

[0038] 220 Pressure relief interface

[0039] 230 Sensor interface

[0040] 300 Push pipe

[0041] 310 Flange

[0042] 320 Pipe Spring

[0043] 400 Tie rod

[0044] 410 Groove

[0045] 420 tie rod spring

[0046] 500 Tightening wrench

[0047] 510 elastic clamp

[0048] 610 Pressure relief button

[0049] 611 Button body

[0050] 612 Button Head

[0051] 620 Ligation Release Button

[0052] 700 Negative Pressure Air Pump

[0053] 710 Air Pump Switch

[0054] 720 Negative pressure indicator

[0055] 730 Display

[0056] 800 Pressure Sensor DETAILED DESCRIPTION

[0057] 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.

[0058] 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.

[0059] like Figures 1 to 6 As shown, the ligation device with negative pressure monitoring function of this embodiment includes:

[0060] Housing 100;

[0061] The straw 200 is installed inside the housing 100, and the front end of the straw 200 passes through the housing 100, and the rear end of the straw 200 is provided with an air pump interface 210, a pressure relief interface 220 and a sensor interface 230;

[0062] The push tube 300 is sleeved on the straw 200 and can move along the axial direction of the straw 200;

[0063] The tying rod 400 has a rear end which is inserted into the housing 100 and is connected to the inside of the housing 100 via a rod spring 420; and a front end of the tying rod 400 is inserted out of the housing 100;

[0064] The tightening wrench 500 is movably connected to the housing 100, and the tightening wrench 500 supports the rear end of the tying rod 400;

[0065] A ligature line 10, one end of which is tied with a slipknot to form a loop, which is sleeved on the front end of the suction tube 200, and the loop is against the front end of the push tube 300, and the end of the ligature line 10 with a slipknot is connected to the front end of the ligature pull rod 400;

[0066] A pressure relief button 610 is disposed on the pressure relief interface 220 of the straw 200;

[0067] A negative pressure air pump 700, wherein the air suction end of the negative pressure air pump 700 is connected to the air pump interface 210 of the suction tube 200, and the air pump switch 710 is installed on the housing 100;

[0068] A pressure sensor 800 , the pressure sensor 800 is connected to the sensor interface 230 of the straw 200 ;

[0069] A negative pressure prompt component is installed on the housing 100;

[0070] The controller 20 , the negative pressure air pump 700 , the air pump switch 710 , the negative pressure prompt component and the pressure sensor 800 are all connected to the controller 20 .

[0071] When the present invention is used, the front end of the suction tube 200 is aligned with the hemorrhoids and the air pump switch 710 is pressed. After the controller 20 receives the signal of starting the air pump switch 710, the controller 20 drives the negative pressure air pump 700 to work, and the negative pressure air pump 700 extracts the air in the suction tube 200. The air pressure in the suction tube 200 decreases. During the process of the hemorrhoids being sucked in, the pressure change in the suction tube 200 transmits the signal to the controller 20 through the pressure sensor 800. As the pressure becomes smaller and smaller, more and more hemorrhoids are sucked in. When the controller 20 determines that the pressure value in the suction tube 200 reaches a predetermined range, the controller 20 controls the negative pressure prompt component to start, giving a prompt to the medical staff that the amount of hemorrhoids sucked in is sufficient and ligation can be performed; then, the push tube 300 is driven to move forward, and the push tube 300 pushes the ring sleeve to the hemorrhoids sucked into the suction tube 200. Root; pull the tightening wrench 500, the tightening wrench 500 is disengaged from the ligation rod 400, and the ligation rod 400 retreats backwards under the action of the rod spring 420, pulling the ligation wire 10, and the ligation wire 10 ties the hemorrhoids tightly under the action of the retreat force; then press the air pump switch 710, and the negative pressure air pump 700 stops; release the pressure relief button 610, so that the pressure relief button 610 is disengaged from the straw 200, the internal air pressure of the straw 200 is consistent with the external environmental air pressure, and the ligated hemorrhoids are removed from the straw 200; pull the ligation wire 10 out of the groove 410 of the ligation rod 400 to complete the hemorrhoid ligation; the present invention can monitor the pressure in the straw 200, and the staff can obtain the pressure situation in the straw 200 according to the negative pressure prompt component to perform hemorrhoid ligation; the ligation device of the present invention has a simple structure and is easy to use.

[0072] The ligation device with negative pressure monitoring function also includes a ligation release button 620 movably mounted on the housing 100. The ligation release button 620 is located behind the push tube 300 and can push the push tube 300 to move. This structure enables the push tube 300 to move forward stably.

[0073] The negative pressure prompt component includes a negative pressure indicator light 720 and / or a display screen 730 installed on the housing 100. The display screen 730 is connected to the controller 20, and the negative pressure indicator light 720 is connected to the controller 20. The pressure change in the straw 200 transmits a signal to the controller 20 through the pressure sensor 800, and the controller 20 controls the display screen 730 to display the corresponding pressure value in the straw 200. When the controller 20 determines that the pressure value in the straw 200 reaches a predetermined range, the controller 20 controls the negative pressure indicator light 720 to light up to give a prompt to the medical staff.

[0074] The ligation device with negative pressure monitoring function also includes a power supply 30, which is connected to the controller 20; a power indicator light is provided on the housing 100, which is connected to the controller 20. During surgery, the power supply 30 is installed, the power indicator light 31 is lit, and the controller 20 controls the color of the power indicator light 31 according to the power of the power supply 30. When the power indicator light 31 is green, it indicates that the power supply 30 has sufficient power and the surgery can continue; when the power indicator light 31 is yellow or red, it indicates that the power supply 30 needs to be replaced. The power supply 30 is a detachable battery pack or an external power supply.

[0075] The tightening wrench 500 is connected to the housing 100 through an elastic clamping piece 510. The elastic clamping piece 510 is a spring or a torsion spring. When the tightening wrench 500 is in an initial state, the elastic clamping piece 510 makes the front end of the tightening wrench 500 press against the rear end of the tightening wrench 500, and the tying wire 10 is in a relaxed state. The tying wire 10 is elastic. In this embodiment, the elastic clamping piece 510 is a torsion spring, which is assembled in the tightening wrench 500, and the head end of the torsion spring is pressed by the ribs on the housing 100 and is in a compressed state.

[0076] The front end of the ligating rod 400 is provided with a groove 410 for the end of the ligating wire 10 to be inserted into. The arrangement of the groove 410 enables the end of the ligating wire 10 to be stably connected to the ligating rod 400 .

[0077] The outer portion of the push tube 300 is provided with a flange 310, and a tube spring 320 is sleeved on the push tube 300 and is located between the flange 310 and the housing 100. After the push tube 300 pushes the ligature thread 10 to the root of the hemorrhoids sucked into the suction tube 200, the ligature release button 620 is released, and the push tube 300 returns to its original position under the spring force of the tube spring 320.

[0078] The pressure relief button 610 includes a button body 611 and a button head 612 wrapped around the button body 611 ; the button body 611 is made of a hard material; and the button head 612 is made of a soft material.

[0079] The method for using the ligation device with negative pressure monitoring function of the present invention comprises the following steps:

[0080] 1) During surgery, the power supply 30 is installed, the power indicator light 31 is on, and the controller 20 controls the color of the power indicator light 31 according to the power level of the power supply 30. When the power indicator light 31 is green, it indicates that the power supply 30 has sufficient power and the surgery can continue; when the power indicator light 31 is yellow or red, it indicates that the power supply 30 needs to be replaced;

[0081] 2) The front end of the suction tube 200 is aligned with the hemorrhoids and the air pump switch 710 is pressed. After the controller 20 receives the signal of starting the air pump switch 710, the controller 20 drives the negative pressure air pump 700 to work. The negative pressure air pump 700 extracts the air in the suction tube 200, and the air pressure in the suction tube 200 decreases. During the process of the hemorrhoids being sucked in, the pressure change in the suction tube 200 transmits the signal to the controller 20 through the pressure sensor 800, and the corresponding pressure value in the suction tube 200 is displayed on the display screen 730. As the pressure decreases, more and more hemorrhoids are sucked in. When the controller 20 determines that the pressure value in the suction tube 200 reaches a predetermined range, the controller 20 controls the negative pressure indicator 720 to light up. At this time, the amount of hemorrhoids sucked in is sufficient and ligation can be performed;

[0082] 3) Press the ligation release button 620 downward, the ligation release button 620 squeezes the rear end of the push tube 300, so that the push tube 300 moves forward, and the push tube 300 pushes the ring to the root of the hemorrhoids sucked into the suction tube 200, release the ligation release button 620, and the push tube 300 returns to its original position under the spring force of the tube spring 320;

[0083] 4) The tightening wrench 500 is pulled, the tightening wrench 500 is disengaged from the ligation rod 400, and the ligation rod 400 retreats backwards under the action of the rod spring 420, pulling the ligation wire 10, and the ligation wire 10 tightens the hemorrhoids under the action of the retreat force;

[0084] 5) Press the air pump switch 710 again, and the negative pressure air pump 700 stops rotating; release the pressure relief button 610, so that the pressure relief button 610 is disengaged from the suction tube 200, and the internal air pressure of the suction tube 200 is consistent with the external environmental air pressure, and the ligated hemorrhoids are removed from the suction tube 200; pull the ligation wire 10 out of the groove 410 of the ligation pull rod 400, and complete the hemorrhoid ligation;

[0085] 6) Push the ligation rod 400 forward, reset the ligation wrench 500, keep the front end of the ligation wrench 500 against the rear end of the ligation rod 400, and then load a new ligation line 10; press the pressure relief button 610 to disconnect the suction tube 200 from the outside; continue to ligate other hemorrhoids according to the above steps 1) to 5).

[0086] In summary, the present invention effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0087] 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 with negative pressure monitoring function, characterized in that: include: Housing (100); A suction tube (200) is installed inside the housing (100), with the front end of the suction tube (200) passing through the housing (100), and the rear end of the suction tube (200) is provided with an air pump interface (210), a pressure relief interface (220) and a sensor interface (230); A push tube (300) is sleeved on the straw (200) and is movable along the axial direction of the straw (200); A ligature pull rod (400), wherein the rear end of the ligature pull rod (400) is inserted into the housing (100), and the rear end of the ligature pull rod (400) is connected to the interior of the housing (100) via a pull rod spring (420); and the front end of the ligature pull rod (400) is inserted out of the housing (100); A tightening wrench (500) is movably connected to the housing (100), and the tightening wrench (500) is pressed against the rear end of the tying rod (400); A ligature wire (10), one end of which is tied with a slipknot to form a loop, the loop is sleeved on the front end of the suction tube (200), and the loop is against the front end of the push tube (300), and the end of the ligature wire (10) with a slipknot is connected to the front end of the ligature pull rod (400); A pressure relief button (610) is arranged on the pressure relief interface (220) of the straw (200); A negative pressure air pump (700), wherein the air suction end of the negative pressure air pump (700) is connected to the air pump interface (210) of the suction tube (200), and the air pump switch (710) is installed on the housing (100); A pressure sensor (800), the pressure sensor (800) being connected to a sensor interface (230) of the straw (200); A negative pressure prompt component, mounted on the housing (100); The controller (20), the negative pressure air pump (700), the air pump switch (710), the negative pressure prompt component and the pressure sensor (800) are all connected to the controller (20).

2. The ligation device with negative pressure monitoring function according to claim 1, characterized in that: It also comprises a ligation release button (620) movably mounted on the housing (100), the ligation release button (620) is located behind the push tube (300), and the ligation release button (620) can push the push tube (300) to move.

3. The ligation device with negative pressure monitoring function according to claim 1, characterized in that: The negative pressure prompt component comprises a negative pressure indicator light (720) and / or a display screen (730) mounted on the housing (100).

4. The ligation device with negative pressure monitoring function according to claim 1, characterized in that: It also comprises a power supply unit (30), the power supply unit (30) being connected to the controller (20); and a power indicator light (31) being provided on the housing (100), the power indicator light (31) being connected to the controller (20).

5. The ligation device with negative pressure monitoring function according to claim 1, characterized in that: The tightening wrench (500) is connected to the housing (100) via an elastic pressing piece (510).

6. The ligation device with negative pressure monitoring function according to claim 1, characterized in that: The front end of the ligating rod (400) is provided with a groove (410) for the end of the ligating wire (10) to be inserted into.

7. The ligation device with negative pressure monitoring function according to claim 1, characterized in that: The push tube (300) is provided with a flange (310) on its exterior, and a pipe spring (320) is sleeved on the push tube (300) and is located between the flange (310) and the housing (100).

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