Intelligent haemorrhoids loop ligature device

Abstract

The intelligent haemorrhoids ligation device comprises a gun body, a quick-change connector, a pull strip, a push block, a rotary cutter, a battery, a first control circuit board, a motor, a lead screw, a rotary encoder, a sliding block and a second control circuit board, the pull strip is clamped in the push block, the push block is clamped on a push pipe, the rotary cutter is fixed to the front end of the push block, and a tensioning knot of a ligation ring penetrates through the rotary cutter and then is clamped on the pull strip; the battery is connected with the first control circuit board and the second control circuit board, the first control circuit board is connected with the motor, the motor is connected with the lead screw, the lead screw is clamped with the sliding block, and the sliding block is connected with the push pipe. The second control circuit board is connected with a rotary encoder, and the rotary encoder is fixed to the lead screw. The sliding block is connected with the rear end of the brace, and when the lead screw pushes the sliding block to slide front and back, the brace moves front and back. The intelligent haemorrhoids loop ligature device can realize automatic control of lesion site adsorption, lesion site loop ligature, loop ligature ring tightening and loop ligature ring cutting.

Description

Technical Field

[0001] The invention belongs to the technical field of hemorrhoid treatment instruments, and in particular relates to an intelligent hemorrhoid ligation device. Background Art

[0002] Hemorrhoid ligation (RPH) is developed from traditional Chinese medicine ligation therapy. This method is to use a special hemorrhoid ligation device to put a special ligation rubber ring on the base of the hemorrhoid or the mucosa on the hemorrhoid at an appropriate position. The tightening and strangulation of the rubber ring blocks the blood supply of the hemorrhoid or reduces venous reflux, reduces the congestion and hypertrophy of the hemorrhoid or blood stasis, and causes ischemia, atrophy, and necrosis. The ligation tissue gradually falls off, and the wound tissue is repaired and healed. It is one of the best non-surgical treatment methods. At present, most of the hemorrhoid ligation devices on the market use a purely manual method from ligation, tightening to cutting, that is, after the tissue is sucked into the lumen through an adsorption device, the ligation rubber ring is manually released, and then the ligation rubber ring is manually tightened. The doctor judges that the ligation rubber ring has been tightened to the expected value based on surgical experience, and then uses scissors to cut the connection between the rubber ring and the tightening mechanism. The manual method is inconvenient to operate, especially when the tensioning device and the ligation device are separated. Improper operation can easily cause the ligation rubber ring to fall off, and various actions need to be switched during use. The tightening of the ligation ring depends entirely on personal experience, and the ligation effect cannot be visualized.

[0003] Therefore, how to solve the defects of the above-mentioned prior art has become the direction of efforts of technicians in this field. Summary of the invention

[0004] The purpose of the present invention is to provide an intelligent hemorrhoid ligation device, which can completely solve the shortcomings of the above-mentioned prior art.

[0005] The purpose of the present invention is achieved through the following technical solutions: An intelligent hemorrhoid ligation device, including a gun body and a quick-change connector, the gun body includes an air circuit connecting tube, the quick-change connector includes an inner tube, a ligation ring and a push tube, the ligation ring is composed of a slipknot loop and a tightening knot, the rear end of the inner tube is clamped with the gun body through an elastic quick-release buckle, the push tube is sleeved on the inner tube, and the front end of the inner tube extends the push tube, and the slipknot loop of the ligation ring is sleeved on the inner tube of the extended push tube, characterized in that it also includes a pull rod, a push block and a rotary cutter, as well as a battery, a No. 1 control circuit board, a motor, a screw rod, a rotary encoder, a slider and a No. 2 control circuit board arranged in the gun body, the pull rod is clamped in the push block The push block is stuck on the push tube, the front end of the push block is fixed with a rotary cutter, and the tightening knot of the ligation ring passes through the rotary cutter and is stuck on the pull rod; the battery is connected to the No. 1 control circuit board and the No. 2 control circuit board respectively, the No. 1 control circuit board is connected to the motor, the motor is connected to the lead screw, the lead screw is engaged with the slider, the slider is connected to the push tube, the motor drives the lead screw to slide back and forth, when the lead screw pushes the slider to slide back and forth, the slider pushes the push tube to slide back and forth; the No. 2 control circuit board is connected to the rotary encoder, and the rotary encoder is fixed on the lead screw; the slider is connected to the rear end of the pull rod, and when the lead screw pushes the slider to slide back and forth, the pull rod moves back and forth.

[0006] As one of the preferred methods, the slider includes a No. 1 screw rod fixing groove, a No. 2 air pipe sliding groove, a No. 3 pushing block and a No. 4 pull rod fixing block. The No. 2 air pipe sliding groove is fixedly clamped on the air path connecting pipe, the screw rod is fixedly clamped on the No. 1 screw rod fixing groove, the No. 3 pushing block is connected to the rear end of the push tube, and a reverse hook is provided at the rear end of the pull rod, which is hooked on the No. 4 pull rod fixing block.

[0007] As one of the preferred methods, a stopper is provided on the push tube, and the stopper, the rotary cutter and the pull rod are located in the same straight line. The ligation ring passes through the stopper and then passes through the rotary cutter, and then is clamped on the wire clamping port at the front end of the pull rod.

[0008] As one of the preferred methods, a push block slider and a push block connecting block are provided on the push block, and the push block connecting block is clamped on the gun body; the push block slider is slidably clamped on the push tube, and the pull strip is clamped between the push block and the push tube.

[0009] As one of the preferred methods, a limit card is provided on the push tube, a positioning convex point is provided on the inner wall of the limit card, the pull strip is clamped in the limit card, and a positioning groove corresponding to the positioning convex point is provided on the outer wall of the pull strip.

[0010] As one of the preferred embodiments, the push tube is further provided with limiting convex strips, there are two or more limiting convex strips, and the pull strip is clamped in the limiting convex strips.

[0011] As one of the preferred embodiments, the rear end of the inner tube is provided with a protruding block, and the rear end of the push tube is provided with a groove. When the block is stuck in the groove, the push tube is engaged with the inner tube.

[0012] As one of the preferred embodiments, an inner tube connecting pipe opening is provided at the rear end of the inner tube, the inner tube connecting pipe opening is clamped on the gas path connecting pipe, and a sealing ring is provided at the clamping position.

[0013] As one of the preferred embodiments, the rear end of the inner tube is provided with an elastic quick-release buckle, and the elastic quick-release buckle is clamped on the gun body.

[0014] As one of the preferred embodiments, an air inlet is provided on the air circuit connecting pipe, a negative pressure switch for blocking the air inlet is provided on the gun body, and a control button and a display are also provided on the gun body.

[0015] As one of the preferred methods, the second control circuit board includes a motor drive circuit, a battery charging and discharging and boosting circuit, a liquid crystal, a photoelectric limit switch and a limit switch electronic circuit.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the intelligent hemorrhoid ligation device of the present invention has a rotary cutter cutting function added to its structural design, thereby avoiding the need to switch to external scissors and other dynamic tools during surgery; the movement of the DC reduction motor is monitored, and a high-precision rotary encoder is added to the screw rod, and the movement state of the DC reduction motor is detected in combination with a controller, thereby calculating the degree of tightening, thereby realizing automatic control of adsorbing the lesion - ligating the lesion - tightening the ligation ring - cutting the ligation ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a hemorrhoid ligation device of the present invention.

[0018] Figure 2 It is a structural explosion diagram of the hemorrhoid ligation device of the present invention.

[0019] Figure 3 It is a structural schematic diagram with a gun body section of the present invention.

[0020] Figure 4 The present invention Figure 3 One of the partial structural diagrams of the connection between the gun body and the quick-change connector.

[0021] Figure 5 The present invention Figure 3 The second schematic diagram of the local structure of the connection between the gun body and the quick-change connector.

[0022] Figure 6 yes Figure 5 One of the structural diagrams of the middle slider.

[0023] Figure 7 yes Figure 5 The second structural diagram of the middle slider.

[0024] Figure 8 yes Figure 2Schematic diagram of the structure of the rotary cutter.

[0025] Fig. 9 yes Figure 7 Schematic diagram of the AA section structure.

[0026] Fig.10 It is a structural diagram of a quick-change connector.

[0027] In the figure: air circuit connecting tube 1, battery 2, No. 1 control circuit board 3, motor 4, screw 401, rotary encoder 5, slider 6, No. 1 screw fixing slot 61, No. 2 air pipe sliding slot 62, No. 3 push block 63, No. 4 pull bar fixing block 64, control circuit board 7, air inlet 8, gun body 9, control button 901, display 902, negative pressure switch 10, inner tube 11, ligation ring 12, push tube 13, push tube convex Ring 131, pull strip 14, wire clamping port 141, push block 15, rotary cutter 16, stopper 17, connecting block 18, elastic quick-release buckle 111, sealing ring 112, protrusion 113, inner tube connecting pipe port 114, slipknot ring port 121, tightening knot 122, limit card 131, limit convex strip 132, positioning convex point 136, groove 137, push block slider 151, push block connecting block 152, positioning groove 153. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example: like Figure 1-10 As shown, an intelligent hemorrhoid ligation device is mainly composed of two large parts, namely, a gun body 9 and a quick-change joint. For the convenience of explanation, the direction of the gun body is "backward" and the direction of the muzzle of the quick-change joint is "front". The present invention optimizes the existing ligation device, realizes the integration of ligation, tightening and tangent functions through a controller, a DC reduction motor, a rotary encoder and a redesigned quick-change joint.

[0030] The quick-change connector includes an inner tube 11, a ligating ring 12, a push tube 13, a pull rod 14, a push block 15 and a rotary cutter 16. The gun body 9 includes an air circuit connecting tube 1, a battery 2, a No. 1 control circuit board 3, a motor 4, a screw rod 401, a rotary encoder 5, a slider 6 and a No. 2 control circuit board 7. The battery 2 is connected to the No. 1 control circuit board 3 and the No. 2 control circuit board 7 respectively, the No. 1 control circuit board 2 is connected to the motor 4, the motor 4 is connected to the screw rod 401, the screw rod 401 is clamped with the slider 6, the slider 6 is connected to the push tube 13, the motor 4 drives the screw rod 401 to slide forward and backward, and when the screw rod 401 pushes the slider 6 to slide forward and backward, the slider 6 pushes the push tube 13 to slide forward and backward.

[0031] in: The gas circuit connecting tube is used to connect the negative pressure adsorption device and the inner tube of the quick-change connector to realize the adsorption function of the tissue.

[0032] The battery provides power to the device host.

[0033] The machine body is provided with a key circuit board, which includes three keys for realizing parameter setting, motor step control and circuit power on-off control.

[0034] The motor completes the ligation and tightening functions through the control circuit.

[0035] Rotary encoder for monitoring the step distance test of the motor.

[0036] The control circuit board contains electronic circuits such as motor drive circuit, battery charging and discharging and boost circuit, liquid crystal, limit switch, etc., which can realize functions such as motor rotation direction control, calculation of ligation and tightening according to the received coding information, battery power monitoring, parameter and monitoring data display, etc.

[0037] The ligature ring 12 is composed of a rubber slipknot ring opening 121 and a tightening knot 122. There is also a rubber strip between the slipknot ring opening and the tightening knot. By pulling one end of the tightening knot, the slipknot ring opening can be tightened to make the ring opening smaller and tighter. The rear end of the inner tube 11 is provided with an elastic quick-release buckle 111, which is clamped on the gun body 9. The inner tube 11 is clamped with the gun body 9 through the elastic quick-release buckle 111 to achieve the purpose of a quick-change joint. The push tube 13 is sleeved on the inner tube 11, and the front end of the inner tube 11 extends the push tube 13. The inner tube 11 from which the push tube 13 is extended is sleeved with a slipknot loop 121 of the ligating ring 12. Once a certain thrust is given to the push tube, the push tube can push the slipknot loop outward; the pull strip 14 is stuck in the push block 15, and the push block 15 is stuck on the push tube 13. A rotary cutter 16 is fixed at the front end of the push block. The tensioning knot of the ligating ring 12 passes through the rotary cutter 16 and is stuck on the pull strip 14. The rotary cutter is used to cut the tensioning strip.

[0038] Among them: a control button 901 and a display 902 are provided on the gun body 9. The device is equipped with a liquid crystal display, which can display the battery power and the tightening size. Combined with the detection results on the LCD screen, the tightening step control is realized. The doctor can realize the automatic control of ligation and tightening by setting the ligation tightening parameters.

[0039] Wherein: the input end of the gas circuit connecting pipe 1 is connected to the external air compressor, and the output end of the gas circuit connecting pipe is connected to the inner pipe. Specifically, the rear end of the inner pipe 11 is provided with an inner pipe connecting pipe opening 114, which is a screw joint with an external thread. The inner pipe is screwed to the gas circuit connecting pipe 1 through the inner pipe connecting pipe opening, and a sealing ring 112 is provided at the clamping point to prevent air leakage. The gas circuit connecting pipe 1 is provided with an air inlet 8, and a negative pressure switch 10 is provided on the gun body 9 to block the air inlet 8. The negative pressure switch is used to control the on and off of the negative pressure in the external air compressor. When the air inlet is closed, the negative pressure machine is connected to the gas circuit connecting pipe 1, and the negative pressure is input into the inner pipe through the gas circuit connecting pipe. When the inner pipe is in use, it is directly aimed at the hemorrhoidal lesion. Under the action of the negative pressure, the pipe opening at the front end of the inner pipe adsorbs the hemorrhoidal lesion.

[0040] The slider 6 is a specially designed structure, and includes a first screw rod fixing groove 61, a second air pipe sliding groove 62, a third push block 63 and a fourth pull bar fixing block 64. The slider mainly realizes four functions: 1. The No. 2 air pipe sliding groove 62 is fixedly clamped on the air circuit connecting pipe 1, and the entire slider needs to slide back and forth on the air circuit connecting pipe, because a platform with a sliding groove is pre-set on the air circuit connecting pipe 1, and then the slider 6 is fixed on it to achieve the purpose of sliding.

[0041] 2. The third push block 63 is connected to the rear end of the push tube 13, and the slider pushes the push tube to move forward. The ligation ring that is sleeved in front of the push tube and located on the inner tube is pushed off the inner tube by the push tube. Because the inner tube has absorbed the hemorrhoidal lesion, the ligation ring is sleeved on the hemorrhoidal lesion.

[0042] 3. The slider 6 is connected to the rear end of the pull rod 14. When the screw rod 401 pushes the slider 6 to slide forward and backward, the pull rod 14 moves forward and backward with the slider. The pull rod 14 is stuck between the push block 15 and the push tube 13; the push tube 13 is provided with a limit card 131, and the inner wall of the limit card 131 is provided with a positioning convex point 136. The pull rod 14 is stuck in the limit card 131, and the outer wall of the pull rod 14 is provided with a positioning groove 153 corresponding to the positioning convex point. The purpose of setting the positioning convex point and the positioning groove is to make the pull rod and the push tube have a certain positioning effect. When pushed by an external force, it can reach this position. In order to facilitate fixing, the push tube 13 is also provided with a limit convex strip 132, and there are two or more limit convex strips 132. The pull rod 14 is stuck in the limit convex strip 132. A bar is provided at the rear end of the pull strip 14, which is hooked on the No. 4 pull strip fixing block 64; the slider fixes the pull strip, and when the slider slides backward, the pull strip will also move backward, thereby driving the tensioning knot pulled by the front end of the pull strip to move backward, so that the entire rubber strip is in a tensioned state, and the slipknot ring mouth that has been put on the hemorrhoidal lesion will be tightened, and the slipknot ring mouth will strangle and block the blood supply of the hemorrhoids.

[0043] 4. The screw rod 401 is fixedly connected to the No. 1 screw rod fixing slot 61. In the specific implementation, the stroke program is pre-set in the No. 1 control circuit board, the motor rotation and the screw rod forward distance are pre-set, and the No. 1 control circuit board is used to control the screw rod forward distance, thereby controlling the sliding distance of the slider.

[0044] The push block 15 is provided with a push block slider 151 and a push block connecting block 152, and the push block connecting block 152 is stuck on the gun body 9; the push block slider 151 is slidably stuck on the push tube 13. A stopper 17 is also provided at the front end of the push tube 13, which plays a role similar to a cutting board. The stopper 17, the rotary cutter and the pull strip are located in the same straight line. The ligation ring 12 passes through the rotary cutter 16 after bypassing the stopper 17, and then is stuck on the line clamping opening 141 at the front end of the pull strip 14. When the push block is pushed forward, the entire rotary cutter will also move forward, and the line of the ligation ring is located between the stopper and the rotary cutter. Therefore, the stopper at this time plays a role similar to a cutting board. The rotary cutter is a cylindrical structure, and its front end is a circle of blades. The blades can cut the rubber strip of the ligation ring, so that the slipknot ring opening at the front end of the entire ligation device can be left at the hemorrhoidal lesion.

[0045] When the ligation rubber ring is tightened to the expected value, the rubber strip on the ligation ring is cut off by the rotary cutter by pushing the push block, completing the separation of the ligation ring from the entire ligation device. After the tangent action is completed, the negative pressure in the air connection tube is released through the exhaust device, allowing the adsorbed hemorrhoidal lesion tissue to escape from the inner tube, completing the entire adsorption-ligation-tension-tangent process.

[0046] In order to make the overall use more convenient, especially the use of the inner tube and the push tube, a protruding block 113 is provided at the rear end of the inner tube 11, and a groove 137 is provided at the rear end of the push tube 13. When the block 113 is stuck in the groove 137, the push tube 13 is clamped with the inner tube 11. This clamping is temporary, which prevents the entire push tube from falling off from the inner tube at any time. Once a certain thrust is given, the push tube can move forward from the inner tube without being restricted by the block.

[0047] The second control circuit board 7 is connected to the rotary encoder 5, and the rotary encoder 5 is fixed on the screw rod 401; the high-precision rotary encoder is used to monitor the step distance test of the motor, and combined with the photoelectric limit switch and the corresponding software algorithm, the movement state of the motor is detected to calculate the degree of tightening.

[0048] The No. 2 control circuit board contains the motor drive circuit, battery charging and discharging and boost circuit, liquid crystal, limit switch and other electronic circuits, photoelectric limit switch and corresponding software, which can detect the movement state of the motor, realize the motor rotation direction control, calculate the tightening of the ligature according to the received coding information, monitor the battery power, and display the parameters and monitoring data.

[0049] The present invention can achieve the following effects: 1. Through control, one-button operation of ligation and tightening is realized to achieve automation; 2. Automatic or semi-automatic control of ligation and tightening can be achieved through parameter preset or step control; 3. Monitor the tightness of the ligature to realize the visualization of the tightness of the ligature.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent hemorrhoid ligation device, comprising a gun body and a quick-change joint, wherein the gun body includes an air circuit connecting tube, the quick-change joint includes an inner tube, a ligation ring and a push tube, the ligation ring is composed of a slipknot loop and a tightening knot, the rear end of the inner tube is clamped with the gun body through an elastic quick-release buckle, the push tube is sleeved on the inner tube, and the front end of the inner tube extends the push tube, and the slipknot loop of the ligation ring is sleeved on the inner tube of the extended push tube, characterized in that: It also includes a pull rod, a push block and a rotary cutter, as well as a battery, a No. 1 control circuit board, a motor, a screw rod, a rotary encoder, a slider and a No. 2 control circuit board arranged in the gun body. The pull rod is stuck in the push block, the push block is stuck on the push tube, the rotary cutter is fixed at the front end of the push block, and the tightening knot of the ligation ring passes through the rotary cutter and is stuck on the pull rod; the battery is respectively connected to the No. 1 control circuit board and the No. 2 control circuit board, the No. 1 control circuit board is connected to the motor, the motor is connected to the screw rod, the screw rod is engaged with the slider, the slider is connected to the push tube, the motor drives the screw rod to slide back and forth, when the screw rod pushes the slider to slide back and forth, the slider pushes the push tube to slide back and forth; the No. 2 control circuit board is connected to the rotary encoder, and the rotary encoder is fixed on the screw rod; the slider is connected to the rear end of the pull rod, when the screw rod pushes the slider to slide back and forth, the pull rod moves back and forth.

2. The intelligent hemorrhoid ligation device according to claim 1, characterized in that: The slider includes a No. 1 screw rod fixing groove, a No. 2 air pipe sliding groove, a No. 3 pushing block and a No. 4 pull rod fixing block. The No. 2 air pipe sliding groove is fixedly clamped on the air circuit connecting pipe, the screw rod is fixedly clamped on the No. 1 screw rod fixing groove, the No. 3 pushing block is connected to the rear end of the push tube, and a reverse hook is provided at the rear end of the pull rod, which is hooked on the No. 4 pull rod fixing block.

3. The intelligent hemorrhoid ligation device according to claim 1, characterized in that: A stopper is arranged on the push tube, and the stopper, the rotary cutter and the pull rod are located in the same straight line. The ligation ring passes through the rotary cutter after bypassing the stopper, and then is clamped on the wire clamping port at the front end of the pull rod.

4. The intelligent hemorrhoid ligation device according to claim 3, characterized in that: A push block slider and a push block connecting block are arranged on the push block, and the push block connecting block is clamped on the gun body; the push block slider is slidably clamped on the push tube, and the pull strip is clamped between the push block and the push tube.

5. The intelligent hemorrhoid ligation device according to claim 4, characterized in that: A limit card is arranged on the push tube, a positioning convex point is arranged on the inner wall of the limit card, the pull bar is clamped in the limit card, and a positioning groove corresponding to the positioning convex point is arranged on the outer wall of the pull bar.

6. The intelligent hemorrhoid ligation device according to claim 5, characterized in that: The push tube is also provided with limiting convex strips, there are two or more limiting convex strips, and the pull strip is clamped in the limiting convex strips; the rear end of the inner tube is provided with a protruding convex block, and the rear end of the push tube is provided with a groove. When the convex block is clamped in the groove, the push tube is clamped with the inner tube.

7. The intelligent hemorrhoid ligation device according to claim 1, characterized in that: The rear end of the inner tube is provided with an inner tube connecting pipe opening, the inner tube connecting pipe opening is clamped on the gas path connecting pipe, and a sealing ring is provided at the clamping position.

8. The intelligent hemorrhoid ligation device according to claim 7, characterized in that: An elastic quick-release buckle is arranged at the rear end of the inner tube, and the elastic quick-release buckle is clamped on the gun body.

9. The intelligent hemorrhoid ligation device according to claim 1, characterized in that: An air inlet is arranged on the air circuit connecting pipe, a negative pressure switch for blocking the air inlet is arranged on the gun body, and a control button and a display are also arranged on the gun body.

10. The intelligent hemorrhoid ligation device according to claim 1, characterized in that: The No. 2 control circuit board includes a motor drive circuit, a battery charging and discharging and boost circuit, a liquid crystal, a photoelectric limit switch and a limit switch electronic circuit.

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