Linear push-pull type manual ligation device

Abstract

The utility model relates to the technical field of loop ligature devices, in particular to a linear push-pull type manual loop ligature device which comprises a gun body assembly, an elastic thread assembly, a thread pulling assembly, a cutting assembly and a percussion assembly, and the thread pulling assembly comprises a push-pull wrench doing linear reciprocating motion and a pull rod connected between the push-pull wrench and an elastic thread. The cutting assembly comprises a cutting slide knob doing linear reciprocating motion and a cutter which is fixed with the cutting slide knob to cut the elastic thread and the ferrule, the percussion assembly comprises a percussion sleeve, and the percussion sleeve comprises a pushing sleeve part which is arranged outside the gun barrel in a sliding and sleeving mode to push out the ferrule at the front end of the gun barrel and a mounting part for mounting the pull rod and the cutting slide knob; according to the loop ligature device, the loop is tightened through the line pulling assembly doing linear reciprocating motion, then the elastic line is cut off through the cutting assembly doing linear reciprocating motion to complete loop ligature, the whole structure is simple, the weight is small, the layout is compact and reasonable, the whole loop ligature process can be completed with one hand, and therefore the fatigue strength of an operator is reduced.

Description

Technical Field

[0001] This utility model relates to the field of ligation device technology, and in particular to a linear push-pull manual ligation device. Background Technology

[0002] Chinese Patent CN215079343U discloses a novel ligation anastomosis device that can automatically tighten and cut elastic threads. It includes a firing mechanism, a suction mechanism, a thread tightening mechanism, and a thread cutting mechanism. The thread tightening mechanism includes a lead screw and a reduction motor that drives the lead screw to rotate. The lead screw is threaded with a lead screw nut, and the lead screw nut has a nut hole for holding the elastic thread. The thread cutting mechanism includes a firing assembly and a cutting blade assembly. Firstly, this application uses an electric structure, relying on a control system to complete various functions, which results in low reliability. Furthermore, the structures of the thread tightening and cutting mechanisms are relatively complex, incorporating batteries, motors, and other components, leading to a large overall weight and high operator fatigue, which affects surgical accuracy. Utility Model Content

[0003] The technical problem to be solved by this utility model is: in order to solve the problem that the existing ligation device adopts an electric structure and relies on the control system to complete various functions, which has low reliability, and the structure of the tensioning mechanism and the cutting mechanism is relatively complex, with the configuration of batteries, motors and other structures, resulting in a large overall weight, high operator fatigue and affecting surgical accuracy, a linear push-pull manual ligation device is provided.

[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a linear push-pull type manual bandaging device, comprising:

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

[0006] An elastic cord assembly includes a collar and an elastic cord for pulling the collar to adjust the collar diameter;

[0007] A pull cable assembly includes a push-pull wrench that performs linear reciprocating motion and a pull rod connected between the push-pull wrench and the elastic cable;

[0008] The cutting assembly includes a cutting slider that makes linear reciprocating motion and a cutter fixed to the cutting slider to cut the elastic line and the collar.

[0009] And a firing assembly, including a firing sleeve, which includes a push sleeve portion that is slidably sleeved outside the barrel to push out a collar at the front end of the barrel and a mounting portion for mounting a pull rod and a cutting slide button.

[0010] Furthermore, the mounting portion has a pull wire slide for sliding the pull rod and a cutting slide for sliding the cutting button. The cutting button protrudes to form a positioning portion, and both ends of the cutting slide have positioning grooves for the positioning portion to engage and position the cutting button.

[0011] Furthermore, the banding device includes a negative pressure assembly, which includes a negative pressure tube and an air intake tube for connecting the negative pressure tube and the barrel. An air intake connector is installed at the end of the negative pressure tube opposite to the air intake tube, and the air intake connector extends out of the gun handle.

[0012] Furthermore, the firing assembly also includes a firing lever for extending the gun handle rearward and an intermediate sleeve located between the firing lever and the firing sleeve, the intermediate sleeve being fitted over the intake tube and having a first elastic element between them.

[0013] Furthermore, the negative pressure pipe includes a first branch pipe, a second branch pipe, and an adapter connecting the first branch pipe and the second branch pipe. The adapter has a pressure relief port, and a plug for opening or closing the pressure relief port is adjustablely installed on the pressure relief port. The plug extends out of the gun handle.

[0014] Furthermore, the end of the pressure relief port contracts radially to form a seal, the end of the plug protrudes radially to form a sealing end, and a second elastic element is installed inside the adapter to press the sealing end against the seal to seal the pressure relief port.

[0015] Furthermore, the barrel and the suction pipe are respectively provided with an elastic latch and a locking groove for the elastic latch to engage at their respective ends, and the handle is movably provided with a button for extending into the locking groove to push out the elastic latch.

[0016] Furthermore, the intermediate sleeve includes a sleeve portion fitted onto the intake tube and a plurality of push plates extending from the sleeve portion toward the firing sleeve. The intake tube protrudes to form a protrusion for fixing with the gun handle, and a notch is formed between adjacent push plates for the protrusion to extend out.

[0017] Furthermore, the pull rod includes a first rod body and a second rod body connected by a snap-fit ​​mechanism. The end of the first rod body facing away from the second rod body is used to fix the elastic line, and the end of the second rod body facing away from the first rod body is connected to the push-pull wrench snap-fit ​​mechanism.

[0018] Furthermore, the gun handle includes a left half-shell and a right half-shell that are snapped together, and the firing sleeve includes a left half-tube and a right half-tube that are snapped together, and the end of the firing sleeve contracts radially to form a limiting part.

[0019] The barrel protrudes radially and has an abutment portion for abutting against the limiting portion.

[0020] The beneficial effects of this utility model are as follows: This utility model uses a pull wire assembly that makes linear reciprocating motion to tighten the loop, and then uses a cutting assembly that makes linear reciprocating motion to cut the elastic wire to complete the tying. The overall structure is simple, lightweight, compact and reasonable, and the entire tying process can be completed with one hand, thereby reducing the fatigue of the operator. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is the front view of this utility model;

[0023] Figure 2 yes Figure 1 A magnified view of part A in the middle;

[0024] Figure 3 This is a three-dimensional schematic diagram of the present invention from a first-person perspective;

[0025] Figure 4 This is a three-dimensional schematic diagram of the present invention from a second perspective;

[0026] Figure 5 This is a cross-sectional view of the present invention;

[0027] Figure 6 This is a front view of the present invention after part of the shell has been removed;

[0028] Figure 7 This is a three-dimensional schematic diagram of the present invention after part of the shell has been removed;

[0029] Figure 8 This is a schematic diagram of the structure of this utility model after removing the gun handle, firing sleeve and negative pressure assembly;

[0030] Figure 9 This is a cross-sectional view of the negative pressure component in this utility model;

[0031] In the picture:

[0032] 1. Gun body assembly; 101. Gun handle; 102. Barrel; 1021. Spring-loaded latch; 1022. Abutment part; 103. Tube cap;

[0033] 2. Elastic cord assembly; 201. Ring; 202. Elastic cord;

[0034] 3. Pull cable assembly; 301. Push-pull wrench; 302. Pull rod; 3021. First rod body; 3022. Second rod body;

[0035] 4. Cutting assembly; 401. Cutting slide button; 4011. Positioning part; 402. Cutting blade;

[0036] 5. Firing assembly; 501. Firing sleeve; 5011. Push sleeve part; 5012. Mounting part; 5012a. Pull wire slide; 5012b. Cutting slide; 5012c. Positioning groove; 5013. Limiting part; 502. Firing lever; 503. Intermediate sleeve; 5031. Sleeve fitting part; 5032. Push plate; 504. First elastic element;

[0037] 6. Negative pressure assembly; 601. Negative pressure pipe; 6011. First branch pipe; 6012. Second branch pipe; 6013. Adapter; 6014. Pressure relief port; 602. Suction pipe; 6021. Locking groove; 6022. Protrusion; 603. Suction connector; 604. Plug; 605. Second elastic element;

[0038] 7. Buttons. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention. Therefore, they only show the components relevant to the present invention. Orientations and references (e.g., up, down, left, right, etc.) are only used to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0040] like Figures 1-9 As shown, a linear push-pull manual ligation device includes:

[0041] Gun assembly 1 includes a gun handle 101 and a gun barrel 102 fixed to the front end of the gun handle 101;

[0042] The elastic cord assembly 2 includes a collar 201 and an elastic cord 202 for pulling the collar 201 to adjust the diameter of the collar 201. When the elastic cord 202 is pulled backward ("back" means the side closer to the operator and "front" means the side closer to the lesion tissue), the collar 201 can be tightened.

[0043] The cable assembly 3 includes a push-pull wrench 301 that performs linear reciprocating motion and a pull rod 302 connected between the push-pull wrench 301 and the elastic line 202. When the index finger hooks the push-pull wrench 301, the push-pull wrench 301 can pull the elastic line 202 backward through the pull rod 302 to tighten the collar 201.

[0044] The cutting assembly 4 includes a cutting slide button 401 that makes linear reciprocating motion and a cutter 402 fixed to the cutting slide button 401 to cut the elastic line 202 and the collar 201. Pushing the cutting slide button 401 forward can drive the cutter 402 to move forward and cut the elastic line 202.

[0045] The firing assembly 5 includes a firing sleeve 501, which includes a push sleeve portion 5011 that is slidably sleeved on the outside of the barrel 102 to push out the collar 201 at the front end of the barrel 102, and a mounting portion 5012 for mounting the pull rod 302 and the cutting slide button 401. The push sleeve portion 5011 and the mounting portion 5012 are integrally formed.

[0046] During operation, firstly, the firing sleeve 501 is used to push the collar 201 at the front end of the barrel 102 onto the lesion tissue. Then, the index finger hooks the push-pull lever 301, which pulls the elastic cord 202 backward via the lever 302 to tighten the collar 201. Finally, the cutting slide button 401 is pushed forward, which drives the cutter 402 to cut the elastic cord 202 to complete the ligation. This application uses the pull cord assembly 3, which moves in a linear reciprocating motion, to tighten the collar 201, and then uses the cutting assembly 4, which moves in a linear reciprocating motion, to cut the elastic cord 202 to complete the ligation. The overall structure is simple, lightweight, and compact, and the entire ligation process can be completed with one hand, thereby reducing the operator's fatigue.

[0047] In some examples, the mounting portion 5012 is formed with a wire slide 5012a for sliding the pull rod 302 and a cutting slide 5012b for sliding the cutting button 401. The wire slide 5012a and the cutting slide 5012b can guide the movement of the pull rod 302 and the cutting button 401, respectively.

[0048] The cutting slider 401 protrudes to form a positioning part 4011. The cutting slide 5012b has positioning grooves 5012c at both ends for the positioning part 4011 to engage and position the cutting slider 401. The positioning grooves 5012c can prevent the cutter 402 from extending unexpectedly, which could damage tissue or cut the elastic line 202 before the collar 201 is tightened. The two positioning grooves 5012c are the front positioning groove and the rear positioning groove, respectively. When the cutting slider 401 is in the front positioning groove 5012c, the cutter 402 is in the cutting state. When the cutting slider 401 is in the rear positioning groove 5012c, the cutter 402 is in the non-cutting state.

[0049] In some examples, the ligator includes a negative pressure assembly 6, which includes a negative pressure tube 601 and an air intake tube 602 for connecting the negative pressure tube 601 and the barrel 102. The barrel 102, the air intake tube 602, and the negative pressure tube 601 are arranged sequentially from front to back and adjacent ones are interlocked. Each interlocking part is equipped with a sealing ring. An air intake connector 603 is installed at the end of the negative pressure tube 601 opposite to the air intake tube 602, and the air intake connector 603 extends out of the handle 101 to connect with a negative pressure generating device. The negative pressure generating device can be a negative pressure pump. When the negative pressure pump is started, the barrel 102, the air intake tube 602, and the negative pressure tube 601 are all drawn to form a negative pressure state. The barrel 102 draws in the lesion tissue located at the suction port for subsequent ligation.

[0050] In some examples, the firing assembly 5 further includes a firing lever 502 for extending the gun handle 101 rearward and an intermediate sleeve 503 located between the firing lever 502 and the firing sleeve 501. The intermediate sleeve 503 is fitted over the air intake tube 602 and a first elastic element 504 is provided between the two. The first elastic element 504 may be a spring. The bottom of the firing lever 502 is recessed to form a receiving groove, and the insertion part of the air intake tube 602 and the negative pressure tube 601 is located in the receiving groove.

[0051] The protruding end of the firing lever 502 protrudes to form a pressing part, which can be used to limit the front limit position of the firing lever 502. The middle part of the firing lever 502 protrudes radially to form a flange, which abuts against the rib inside the gun handle 101 to limit the rear limit position of the firing lever 502. The pressing surface of the pressing part is inclined from top to bottom and backward. When firing, first hold the gun handle 101, then press the pressing part of the firing lever 502 with your thumb. The firing lever 502 drives the firing sleeve 501 forward through the intermediate sleeve 503 to push out the collar 201 on the barrel 102. At this time, the first elastic element 504 is in a compressed state. Finally, the thumb releases the pressing part, and the intermediate sleeve 503 returns to its original position under the elastic force of the first elastic element 504.

[0052] In some examples, the negative pressure tube 601 includes a first branch tube 6011, a second branch tube 6012, and an adapter 6013 connecting the first branch tube 6011 and the second branch tube 6012. The adapter 6013 has a pressure relief port 6014. A plug 604 for opening or closing the pressure relief port 6014 is adjustablely installed on the pressure relief port 6014. The plug 604 extends out of the gun handle 101. After the ligation is completed, the plug 604 can be pressed to open the pressure relief port 6014, the negative pressure environment in the gun barrel 102 disappears, and the adsorption port separates from the lesion tissue.

[0053] In some examples, the end of the pressure relief port 6014 contracts radially to form a seal, and the end of the plug 604 protrudes radially to form a sealing end. A second elastic element 605 is installed inside the adapter 6013 to press the sealing end against the seal to seal the pressure relief port 6014. The second reset element can be a spring. When the plug 604 is pressed, the sealing end of the plug 604 disengages from the seal, and the first elastic element 504 is compressed. At this time, the pressure relief port 6014 opens. After the pressure is released, the plug 604 is released, and the plug 604 resets under the elastic force of the first elastic element 504. The sealing end of the plug 604 abuts against the seal to seal the pressure relief port 6014.

[0054] In some examples, the barrel 102 and the suction pipe 602 are respectively provided with elastic latches 1021 and locking grooves 6021 for the elastic latches 1021 to engage at their respective ends. The number of elastic latches 1021 and locking grooves 6021 are corresponding, and can be, but is not limited to, one or two, etc. Each elastic latch 1021 is engaged in its corresponding locking groove 6021. A button 7 is movably provided on the gun handle 101 for extending into the locking groove 6021 to push out the elastic latches 1021. One end of the button 7 is fixed to the gun handle 101, and the other end is pushed out towards the locking groove 6021 to form a push rod for extending into the locking groove 6021. Pressing the button 7 drives the push rod to move towards the locking groove 6021, thereby pushing out the elastic latches 1021 in the locking groove 6021 and realizing the separation of the barrel 102 and the suction pipe 602.

[0055] In some examples, the intermediate sleeve 503 includes a sleeve portion 5031 sleeved on the suction tube 602 and a plurality of push plates 5032 extending from the sleeve portion 5031 toward the firing sleeve 501. A protruding post is formed on the suction tube 602 for mounting a first elastic element 504. One end of the first elastic element 504 abuts against the end of the sleeve portion 5031 and the other end abuts against the suction tube 602.

[0056] The suction tube 602 protrudes to form a protrusion 6022 for fixing to the gun handle 101. The inner peripheral wall of the gun handle 101 forms a slot for inserting the protrusion 6022. A notch is formed between adjacent push plates 5032 for the protrusion 6022 to extend out, and the notch can also be used for the push rod of the button 7 to extend into.

[0057] In some examples, the lever 302 includes a first rod 3021 and a second rod 3022 connected by a snap-fit ​​mechanism. The end of the first rod 3021 facing away from the second rod 3022 is used to fix the elastic cord 202. The end of the elastic cord 202 protrudes to form a snap-fit ​​portion. The first rod 3021 has a slot for the snap-fit ​​portion to engage. The end of the second rod 3022 facing away from the first rod 3021 is snap-fitted to the push-pull wrench 301, i.e., the elastic cord 202. The first rod 3021, the second rod 3022, and the push-pull wrench 301 are all detachably connected. The handle 101 has a wrench slide for the push-pull wrench 301 to slide.

[0058] In some examples, the gun handle 101 includes a left half-shell and a right half-shell that are snapped together, and the firing sleeve 501 includes a left half-tube and a right half-tube that are snapped together. The firing sleeve 501 extends forward from the gun handle 101, and the end of the firing sleeve 501 contracts radially to form a limiting part 5013. The gun barrel 102 protrudes radially to form an abutting part 1022 for abutting against the limiting part 5013. When the abutting part 1022 abuts against the limiting part 5013, it is the limit position of the forward movement of the firing sleeve 501.

[0059] Working principle:

[0060] During operation, first hold the gun handle 101, remove the tube cap 103 on the suction port and align the suction port of the gun barrel 102 with the lesion tissue, start the negative pressure pump, the gun barrel 102, the suction tube 602 and the negative pressure tube 601 are all drawn to form a negative pressure state, and the gun barrel 102 draws in the lesion tissue located at the suction port.

[0061] Then, the thumb presses the pressing part of the firing lever 502. The firing lever 502 drives the firing sleeve 501 to move forward through the intermediate sleeve 503, thereby pushing the collar 201 on the barrel 102 to the lesion tissue. At this time, the first elastic element 504 is in a compressed state.

[0062] Next, hook the push-pull wrench 301 with your index finger. The push-pull wrench 301 can pull the elastic line 202 backward through the pull rod 302 to tighten the collar 201.

[0063] Finally, push the cutting slider 401 forward. The cutting slider 401 drives the cutter 402 forward to cut the elastic thread 202 and complete the tying.

[0064] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A linear push-pull manual ligation device, characterized by: It comprises: a gun body assembly (1) comprising a gun handle (101) and a barrel (102) fixed at the front end of the gun handle (101); a elastic line assembly (2) comprising a collar (201) and an elastic line (202) used to pull the collar (201) to adjust the diameter of the collar (201); a pull line assembly (3) comprising a push-pull handle (301) moving in a straight line and a pull rod (302) connected between the push-pull handle (301) and the elastic line (202); a cutting assembly (4) comprising a cutting slide button (401) moving in a straight line and a cutting knife (402) fixed with the cutting slide button (401) to cut the elastic line (202) and the collar (201); and a firing assembly (5) comprising a firing sleeve (501) comprising a pushing sleeve part (5011) slidingly sleeved outside the barrel (102) to push the collar (201) at the front end of the barrel (102) and a mounting part (5012) for mounting the pull rod (302) and the cutting slide button (401).

2. A linear push-pull manual ligation device according to claim 1, wherein: The mounting part (5012) is formed with a pull line slide (5012a) for the pull rod (302) to slide and a cutting slide (5012b) for the cutting slide button (401) to slide, the cutting slide button (401) is formed with a positioning part (4011) protruding, and the cutting slide (5012b) has positioning grooves (5012c) at both ends for the positioning part (4011) to be clamped into to position the cutting slide button (401).

3. A linear push-pull manual ligation device according to claim 1, wherein: The tourniquet comprises a negative pressure assembly (6) comprising a negative pressure pipe (601) and an air suction pipe (602) used to connect the negative pressure pipe (601) and the barrel (102), one end of the negative pressure pipe (601) away from the air suction pipe (602) is mounted with an air suction connector (603), and the air suction connector (603) extends out of the gun handle (101).

4. A linear push-pull manual ligation device according to claim 3, wherein: The firing assembly (5) further comprises a firing rod (502) extending backward out of the gun handle (101) and an intermediate sleeve (503) between the firing rod (502) and the firing sleeve (501), the intermediate sleeve (503) is sleeved outside the air suction pipe (602) and a first elastic element (504) is arranged between the intermediate sleeve (503) and the air suction pipe (602).

5. A linear push-pull manual ligation device according to claim 3, wherein: The negative pressure pipe (601) comprises a first branch pipe (6011), a second branch pipe (6012) and an adapter (6013) connected between the first branch pipe (6011) and the second branch pipe (6012), and the adapter (6013) has a pressure relief port (6014), a plug (604) used to open or block the pressure relief port (6014) is adjustably mounted on the pressure relief port (6014), and the plug (604) extends out of the gun handle (101).

6. A linear push-pull manual ligation device according to claim 5, wherein: The end of the pressure relief port (6014) is radially contracted to form a sealing port, the end of the plug (604) is radially protruded to form a blocking end, and a second elastic element (605) is mounted in the adapter (6013) to press the blocking end to the sealing port to block the pressure relief port (6014).

7. A linear push-pull manual ligation device according to claim 3, wherein: The gun barrel (102) and the air suction pipe (602) are provided with elastic buckles (1021) and locking grooves (6021) for the elastic buckles (1021) at one end close to each other, respectively, and the gun handle (101) is movably provided with a button (7) for extending into the locking groove (6021) to push out the elastic buckle (1021).

8. A linear push-pull manual ligation device according to claim 4, wherein: The intermediate sleeve (503) comprises a sleeving part (5031) sleeved on the air suction pipe (602) and a plurality of push plates (5032) formed by extending from the sleeving part (5031) to the firing sleeve pipe (501), the air suction pipe (602) is provided with a protruding part (6022) for fixing with the gun handle (101), and the adjacent push plates (5032) are formed with notches for the protruding part (6022) to extend out.

9. The linear push-pull manual ligation device of claim 1, wherein: The pull rod (302) comprises a first rod body (3021) and a second rod body (3022) connected by buckling, one end of the first rod body (3021) away from the second rod body (3022) is used for fixing the elastic line (202), and one end of the second rod body (3022) away from the first rod body (3021) is buckled with the push-pull wrench (301).

10. The linear push-pull manual ligation device of claim 1, wherein: The gun handle (101) comprises a left half shell and a right half shell connected by buckling, and the firing sleeve pipe (501) comprises a left half pipe and a right half pipe connected by buckling. The end of the firing sleeve pipe (501) is radially contracted to form a limiting part (5013), and the gun barrel (102) is radially protruded to form an abutting part (1022) for abutting with the limiting part (5013).

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