High-efficiency negative-pressure loop ligature device

Abstract

The utility model relates to a high-efficiency negative pressure ligation device which comprises a handle shell, an extension tube and an outer sleeve are arranged at the front end of the handle shell, the outer sleeve is arranged outside the extension tube in a sleeved mode, the extension tube and the handle shell are relatively fixed, the outer sleeve is connected with the extension tube in a sliding mode, and supporting strips are arranged on the inner wall of the outer sleeve. The face, away from the outer sleeve, of the supporting strip is attached to the outer wall of the extension pipe, and a driving assembly used for driving the outer sleeve to slide is arranged in the handle shell. The extension pipe is sleeved with elastic rings, the multiple elastic rings are arranged at equal intervals in the axial direction of the extension pipe, and the elastic rings are arranged on the extension pipe through a mounting assembly; push rods are arranged on the inner wall of the outer sleeve, the ends, away from the outer sleeve, of the push rods extend to the elastic rings and abut against the sides, close to the handle shell, of the elastic rings, the push rod at each elastic ring is located on the side, close to the handle shell, of the corresponding elastic ring, and the ends, away from the outer sleeve, of the push rods incline in the direction away from the handle shell. The device has the effect of improving the treatment efficiency.

Description

Technical Field

[0001] This utility model relates to the field of ligation devices, and in particular to a high-efficiency negative pressure ligation device. Background Technology

[0002] A ligator is a treatment device used to treat conditions such as polyps and hemorrhoids. When the ligator is working, it is connected to a negative pressure suction device. Under negative pressure, the tissue is sucked up to a state that is easy to ligate, and then the elastic band is ligated and fixed to the root of the tissue.

[0003] In related technologies, the ligator includes a handle housing, an extension tube is fixedly connected to the front end of the handle housing, an outer tube is slidably connected to the extension tube, and an elastic ring is fitted at the front end of the extension tube. After the outer tube is pushed forward, the elastic ring is pushed to fit onto the root of the tissue. After the elastic ring tightens the tissue, the operator pulls the tissue off.

[0004] Regarding the aforementioned techniques, after the elastic band on the extension tube is placed on the tissue root using the ligator, a new elastic band needs to be installed. When replacing the elastic band, it needs to be stretched open before being placed on the extension tube, which is prone to installation errors, inconvenient to operate, and reduces treatment efficiency. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides a high-efficiency negative pressure bandaging device.

[0006] The high-efficiency negative pressure bandaging device provided in this application adopts the following technical solution:

[0007] A high-efficiency negative pressure banding device includes a handle housing, an extension tube and an outer tube at the front end of the handle housing, the outer tube being sleeved over the extension tube, the extension tube being fixed relative to the handle housing, the outer tube being slidably connected to the extension tube, a support strip being provided on the inner wall of the outer tube, the side of the support strip away from the outer tube being in contact with the outer wall of the extension tube, and a driving component for driving the outer tube to slide is provided inside the handle housing;

[0008] An elastic ring is fitted onto the extension tube, and multiple elastic rings are equidistantly arranged along the axial direction of the extension tube. The elastic rings are mounted on the extension tube by an installation assembly.

[0009] A push rod is provided on the inner wall of the outer sleeve. The end of the push rod away from the outer sleeve extends to the elastic ring and abuts against the side of the elastic ring near the handle housing. The push rod at each elastic ring is located on the side of the corresponding elastic ring near the handle housing. The end of the push rod away from the outer sleeve is inclined in the direction away from the handle housing.

[0010] When the outer sleeve slides away from the handle housing, the push rod pushes the corresponding elastic ring away from the handle housing, and the elastic ring furthest from the handle housing is pushed by the push rod to the root of the tissue;

[0011] When the outer sleeve slides toward the handle housing, the push rod returns to its original position;

[0012] The handle housing is equipped with a negative pressure suction component for suctioning tissue.

[0013] Preferably, the mounting assembly includes a mounting tube and a limiting plug. The mounting tube is inserted into the outer sleeve, and the mounting tube is coaxially connected to the limiting tube. The outer diameter of the limiting tube is smaller than the outer diameter of the mounting tube. The limiting tube is inserted into the extension tube, and the elastic ring is sleeved on the mounting tube. A limiting component is provided on the limiting tube, and the limiting tube is fixed in the extension tube by the limiting component.

[0014] The limiting plug includes a plug head, a limiting ring, and a cross rod. The limiting ring is coaxially connected to the end of the plug head near the extension tube and is sleeved on the mounting tube. The cross rod is coaxially connected to the end of the plug head near the extension tube and is inserted into the mounting tube. The cross rod includes four integrally formed unit plates.

[0015] Preferably, the limiting component includes a limiting block, which is fixedly connected to the outer wall of the limiting tube. The inner wall of the extension tube is provided with a clearance groove for the limiting block to pass through along the axial direction of the extension tube and a limiting groove for the limiting block to slide along the circumferential direction of the extension tube. The clearance groove passes through the end of the extension tube away from the handle body, and the limiting groove communicates with the clearance groove.

[0016] The inner wall of the limiting groove is provided with a limiting protrusion. After the limiting block rotates to abut against the inner wall of the radial end of the limiting groove, the limiting block is locked between the inner wall of the limiting groove and the limiting protrusion.

[0017] Preferably, the limiting blocks are symmetrically arranged on both sides of the radial direction of the limiting tube, and the clearance groove, the limiting groove, and the limiting protrusion all correspond one-to-one with the limiting blocks.

[0018] Preferably, the mounting pipe includes a first pipe section and a second pipe section. The outer diameter of the first pipe section is larger than the outer diameter of the second pipe section, and the outer diameter of the second pipe section is larger than the outer diameter of the limiting pipe. The outer walls of the first pipe section and the second pipe section are smoothly connected. When the limiting block is located in the limiting groove, the side of the second pipe section away from the first pipe section abuts against the side of the extension pipe close to the mounting pipe.

[0019] The elastic ring is fitted onto the second tube segment, and the push rod pushes the elastic ring from the second tube segment to the root of the patient's tissue.

[0020] The outer peripheral wall of the second pipe section is provided with a positioning ring groove for embedding the elastic ring, and the inner peripheral wall of the elastic ring is embedded in the positioning ring groove.

[0021] Preferably, the drive assembly includes a drive wrench, a drive plate, and a drive spring. The top of the drive wrench is rotatably connected to the handle housing via a torsion spring. The torsion spring applies a force to the drive wrench, causing the end of the drive wrench located outside the handle housing to move upward.

[0022] The drive plate is arranged along the axial direction of the outer sleeve. One end of the drive plate is fixed to the top surface of the drive wrench. The other end of the drive plate is provided with a first locking block. The outer sleeve is provided with a second locking block on the side close to the drive plate. The top of the first locking block on the side close to the elastic ring is provided with a first wedge surface. The top of the second locking block on the side away from the elastic ring is provided with a second wedge surface.

[0023] A first limiting ring plate is provided on the outer peripheral wall of the outer sleeve, and a second limiting ring plate is provided on the inner wall of the handle housing. The first limiting ring plate is closer to the elastic ring than the second limiting ring plate. The drive spring is located between the first limiting ring plate and the second limiting ring plate. The middle part of the drive spring abuts against the first limiting ring plate, and the other end of the drive spring abuts against the second limiting ring plate.

[0024] Preferably, each elastic ring corresponds to multiple push rods, and the multiple push rods at each elastic ring are equidistantly arranged along the circumference of the extension tube.

[0025] Preferably, the negative pressure suction assembly includes a suction tube, a vent tube, and a connecting tube. One end of the suction tube is connected to and communicates with the side wall of the extension tube extending into the handle housing. The vent tube is a T-shaped tube. The other end of the suction tube is inserted into and communicates with the first port of the vent tube. One end of the connecting tube is inserted into and communicates with the second port of the vent tube. The other end of the connecting tube extends to the outside of the handle housing and is connected to a negative pressure suction machine. A venting component is provided at the third port of the vent tube. The side wall of the vent tube is fixed to the inner wall of the handle housing through an auxiliary tube.

[0026] The venting component is plate-shaped, and the side wall of the middle part of the venting component is rotatably connected to the handle housing. A sealing plug is provided on the side of the venting component located inside the handle housing. The end of the sealing plug away from the venting component is interference-fitted into the opening of the venting pipe. The venting component is rotated until the sealing plug is inserted into the venting pipe or detached from the venting pipe.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. When installing the elastic ring, slip the elastic ring onto the limiting tube and move it towards the mounting tube until it is on the mounting tube. Then, insert the limiting tube into the extension tube and rotate the mounting tube until the limiting block is locked between the inner wall of the limiting groove and the limiting protrusion to fix the mounting tube. When using a slinger, simply pull the limiting plug off the mounting tube. When the elastic ring needs to be replaced, simply remove the mounting tube from the extension tube. Compared to directly opening the elastic ring and slipping it onto the extension tube, moving the elastic ring to the mounting tube through the limiting tube is more convenient, faster, and has a lower error rate, improving the operability and ease of operation for replacing the elastic ring.

[0029] 2. During the operation, first pull the outer tube away from the patient's tissue, so that the second locking block on the outer tube is locked onto the side of the first locking block on the drive plate away from the patient's tissue. At this time, the drive spring is compressed, and then the tissue is sucked up by the negative pressure suction component. Then, press down the drive wrench to make the second locking block disengage from the first locking block. In order to restore the original length, the drive spring pushes the outer tube towards the patient's tissue through the first limiting ring plate. The push rod pushes the corresponding elastic ring towards the tissue root. Each elastic ring moves towards the tissue root. The elastic ring furthest from the handle housing moves from the mounting tube to the tissue root. The elastic ring that was originally furthest from the handle housing moves towards the tissue root to the current position furthest from the handle housing.

[0030] After the drive wrench is released, it returns to its original position under the action of the torsion spring.

[0031] When another tissue needs to be ligated, pull the outer tube away from the patient's tissue again, so that the second locking block on the outer tube locks onto the side of the first locking block on the drive plate away from the patient's tissue. At this time, the drive spring is compressed again. Then, press the drive wrench down again to fire the next elastic coil to the root of another tissue, thus achieving the effect of continuous ligation treatment and improving treatment efficiency. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency negative pressure banding device in an embodiment of this application.

[0033] Figure 2 This is a schematic diagram illustrating the structure of the installation component located on the extension tube in this application embodiment.

[0034] Figure 3 This is an exploded structural diagram of the limiting block and the limiting groove used in the embodiments of this application.

[0035] Figure 4 This is a schematic diagram illustrating the structure of the limiting plug in an embodiment of this application.

[0036] Figure 5This is a schematic diagram illustrating the structure of the driving component in an embodiment of this application.

[0037] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0038] Figure 7 This is a schematic diagram illustrating the structure of the negative pressure suction component in an embodiment of this application.

[0039] Explanation of reference numerals in the attached drawings: 1. Handle housing; 11. Second limiting ring plate; 2. Extension tube; 21. Relief groove; 22. Limiting groove; 221. Limiting protrusion; 23. Fixing rod; 3. Outer tube; 31. Support bar; 32. Second locking block; 33. First limiting ring plate; 34. Slide groove; 4. Drive assembly; 41. Drive wrench; 42. Drive plate; 421. First locking block; 43. Drive spring; 5. Elastic ring; 6. Mounting assembly Components; 61. Installation pipe; 611. Limiting pipe; 612. First pipe section; 613. Second pipe section; 6131. ​​Positioning ring groove; 62. Limiting plug; 621. Plug head; 622. Limiting ring; 623. Cross rod; 63. Limiting block; 7. Push rod; 71. Observation slot; 8. Negative pressure suction assembly; 81. Suction pipe; 82. Vent pipe; 83. Connecting pipe; 84. Vent component; 85. Auxiliary pipe; 86. Sealing plug. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0041] This application discloses a high-efficiency negative pressure bandaging device.

[0042] Reference Figure 1-7 The high-efficiency negative pressure banding device includes a handle housing 1, an extension tube 2 and an outer tube 3 at the front end of the handle housing 1, the outer tube 3 is sleeved outside the extension tube 2, the extension tube 2 is fixed relative to the handle housing 1, the outer tube 3 is slidably connected to the extension tube 2, a support strip 31 is provided on the inner wall of the outer tube 3, the side of the support strip 31 away from the outer tube 3 is in contact with the outer wall of the extension tube 2, and a drive assembly 4 for driving the outer tube 3 to slide is provided inside the handle housing 1.

[0043] An elastic ring 5 is fitted on the extension tube 2. Multiple elastic rings 5 ​​are equidistantly arranged along the axial direction of the extension tube 2. In this embodiment, two elastic rings 5 ​​are provided, and the two elastic rings 5 ​​are spaced apart on the extension tube 2 through the mounting component 6.

[0044] A push rod 7 is provided on the inner wall of the outer tube 3. The end of the push rod 7 away from the outer tube 3 extends to the elastic ring 5 and abuts against the side of the elastic ring 5 near the handle housing 1. The push rod 7 at each elastic ring 5 is located on the side of the corresponding elastic ring 5 near the handle housing 1. The end of the push rod 7 away from the outer tube 3 is inclined in the direction away from the handle housing 1. An observation slot 71 is provided at the push rod 7. The observation slot 71 is "U" shaped and penetrates both sides of the outer tube 3 in the thickness direction. The observation slot 71 not only facilitates the observation of the situation on the extension tube 2, but also makes the push rod 7 and the outer tube 3 elastic.

[0045] When the outer tube 3 slides away from the handle housing 1, the push rod 7 pushes the corresponding elastic ring 5 away from the handle housing 1, and the elastic ring 5 furthest from the handle housing 1 is pushed by the push rod 7 to the root of the tissue. When the outer tube 3 slides closer to the handle housing 1, the push rod 7 returns to its original position.

[0046] Mounting assembly 6 includes mounting tube 61 and limiting plug 62. Mounting tube 61 is inserted into outer sleeve 3. Mounting tube 61 is coaxially connected to limiting tube 611. The outer diameter of limiting tube 611 is smaller than the outer diameter of mounting tube 61. Limiting tube 611 is inserted into extension tube 2. Elastic ring 5 is sleeved on mounting tube 61. Limiting component is provided on limiting tube 611. Limiting tube 611 is fixed in extension tube 2 by limiting component.

[0047] The limiting plug 62 includes a plug head 621, a limiting ring 622, and a cross rod 623. The limiting ring 622 is coaxially connected to the end of the plug head 621 near the extension tube 2 and is sleeved on the mounting tube 61. The cross rod 623 is coaxially connected to the end of the plug head 621 near the extension tube 2 and is inserted into the mounting tube 61. The cross rod 623 includes four integrally formed unit plates.

[0048] The limiting component includes a limiting block 63, which is fixedly connected to the outer wall of the limiting tube 611. The inner wall of the extension tube 2 has a clearance groove 21 for the limiting block 63 to pass through axially along the extension tube 2, and a limiting groove 22 for the limiting block 63 to slide circumferentially along the extension tube 2. The clearance groove 21 passes through the end of the extension tube 2 away from the handle body, and the limiting groove 22 communicates with the clearance groove 21. A limiting protrusion 221 is provided on the inner wall of the limiting groove 22. After the limiting block 63 rotates to abut against the inner wall of the radial end of the limiting groove 22, the limiting block 63 is engaged between the inner wall of the limiting groove 22 and the limiting protrusion 221. The limiting blocks 63 are symmetrically arranged on both sides of the limiting tube 611 radially, and the clearance groove 21, the limiting groove 22, and the limiting protrusion 221 each correspond to a limiting block 63.

[0049] The installation tube 61 includes a first tube section 612 and a second tube section 613. The outer diameter of the first tube section 612 is larger than the outer diameter of the second tube section 613. After the elastic ring 5 is fired, the first tube section 612 expands the inner diameter of the elastic ring 5, making it easier for the elastic ring 5 to be wrapped around the tissue root. The outer diameter of the second tube section 613 is larger than the outer diameter of the limiting tube 611. When the limiting block 63 is located in the limiting groove 22, the side of the second tube section 613 away from the first tube section 612 abuts against the side of the extension tube 2 close to the installation tube 61.

[0050] The elastic coil 5 is fitted onto the second tube segment 613, and the push rod 7 pushes the elastic coil 5 from the second tube segment 613 to the root of the patient's tissue. Compared to initially placing the elastic coil 5 on the first tube segment 612, initially placing the elastic coil 5 on the second tube segment 613 can avoid fatigue of the elastic coil 5 and reduce its contractile ability.

[0051] The outer walls of the first pipe section 612 and the second pipe section 613 are smoothly connected, ensuring a smooth firing process for the elastic ring 5.

[0052] The outer peripheral wall of the second tube section 613 is provided with a positioning ring groove 6131 for the elastic ring 5 to be embedded. The inner peripheral wall of the elastic ring 5 is embedded in the positioning ring groove 6131. ​​When the elastic ring 5 furthest from the handle housing 1 moves to the tissue, the elastic ring 5 closest to the handle housing 1 moves to the position of the elastic ring 5 furthest from the handle housing 1 and is stuck in the positioning ring groove 6131, so as to prevent the elastic ring 5 from being pushed towards the handle housing 1 when the push rod 7 is reset.

[0053] When installing the elastic ring 5, slip the elastic ring 5 onto the limiting tube 611 and move it towards the installation tube 61 to the positioning ring groove 6131 of the second section 613 of the installation tube 61. Then, insert the limiting tube 611 into the extension tube 2 and rotate the installation tube 61 until the limiting block 63 is locked between the inner wall of the limiting groove 22 and the limiting protrusion 221, thus fixing the installation tube 61. When using a slinger, simply pull the limiting plug 62 off the installation tube 61. When the elastic ring 5 needs to be replaced, simply remove the installation tube 61 from the extension tube 2. Compared to directly opening the elastic ring 5 and slipping it onto the extension tube 2, moving the elastic ring 5 onto the installation tube 61 through the limiting tube 611 is more convenient, faster, and has a lower error rate, improving the operability and ease of operation for replacing the elastic ring 5.

[0054] The drive assembly 4 includes a drive wrench 41, a drive plate 42, and a drive spring 43. The top of the drive wrench 41 is rotatably connected to the handle housing 1 via a torsion spring. The torsion spring applies a force to the drive wrench 41, causing the end of the drive wrench 41 located outside the handle housing 1 to move upward.

[0055] The drive plate 42 is arranged along the axial direction of the outer sleeve 3. One end of the drive plate 42 is fixed to the top surface of the drive wrench 41. The other end of the drive plate 42 is provided with a first locking block 421. The outer sleeve 3 is provided with a second locking block 32 on the side close to the drive plate 42. The top of the first locking block 421 on the side close to the elastic ring 5 is provided with a first wedge surface. The top of the second locking block 32 on the side away from the elastic ring 5 is provided with a second wedge surface.

[0056] A first limiting ring plate 33 is provided on the outer peripheral wall of the outer sleeve 3, and a second limiting ring plate 11 is provided on the inner wall of the handle housing 1. The first limiting ring plate 33 is closer to the elastic ring 5 than the second limiting ring plate 11. The drive spring 43 is located between the first limiting ring plate 33 and the second limiting ring plate 11. The middle part of the drive spring 43 abuts against the first limiting ring plate 33, and the other end of the drive spring 43 abuts against the second limiting ring plate 11.

[0057] Multiple push rods 7 correspond to each elastic ring 5. The multiple push rods 7 at each elastic ring 5 are equidistantly arranged along the circumference of the extension tube 2 to improve the uniformity of force on the outer tube 3.

[0058] During the procedure, the outer sleeve 3 is first pulled away from the patient's tissue, causing the second locking block 32 on the outer sleeve 3 to engage with the first locking block 421 on the drive plate 42 on the side away from the patient's tissue. At this time, the drive spring 43 is compressed, and then the tissue is sucked in by the negative pressure suction component 8. Then, the drive wrench 41 is pressed down, causing the second locking block 32 to disengage from the first locking block 421. To restore its original length, the drive spring 43 pushes the outer sleeve 3 towards the patient's tissue via the first limiting ring plate 33. The push rod 7 pushes the corresponding elastic ring 5 towards the root of the tissue. Each elastic ring 5 moves towards the root of the tissue. The elastic ring 5 furthest from the handle housing 1 moves from the mounting tube 61 to the root of the tissue, and the elastic ring 5 that was originally furthest from the handle housing 1 moves towards the root of the tissue to its current position furthest from the handle housing 1. After releasing the drive wrench 41, the drive wrench 41 returns to its original position under the action of the torsion spring.

[0059] When another tissue needs to be ligated again, the outer tube 3 is pulled away from the patient tissue again, so that the second locking block 32 on the outer tube 3 is locked onto the side of the first locking block 421 on the drive plate 42 away from the patient tissue. At this time, the drive spring 43 is compressed again, and then the drive wrench 41 is pressed down again to make the next elastic ring 5 strike the root of another tissue, thus achieving the effect of continuous ligation treatment and improving treatment efficiency.

[0060] The extension tube 2 is provided with a fixing rod 23 that is fixedly connected to the inner wall of the handle housing 1, and the outer tube 3 located inside the handle housing 1 has a sliding groove 34 for the fixing rod 23 to slide.

[0061] The handle housing 1 is equipped with a negative pressure suction assembly 8 for suctioning tissue. The negative pressure suction assembly 8 includes a suction tube 81, a vent tube 82, and a connecting tube 83. One end of the suction tube 81 is connected to and communicates with the side wall of the extension tube 2 that extends into one end of the handle housing 1. The vent tube 82 is a three-way tube. The other end of the suction tube 81 is inserted into and communicates with the first port of the vent tube 82. One end of the connecting tube 83 is inserted into and communicates with the second port of the vent tube 82. The other end of the connecting tube 83 extends to the outside of the handle housing 1 and is connected to a negative pressure suction machine. A venting element 84 is provided at the third port of the vent tube 82. The side wall of the vent tube 82 is fixed to the inner wall of the handle housing 1 through an auxiliary tube 85.

[0062] The venting component 84 is plate-shaped. The side wall of the middle part of the venting component 84 is rotatably connected to the handle housing 1. A sealing plug 86 is provided on the side of the venting component 84 located inside the handle housing 1. The end of the sealing plug 86 away from the venting component 84 is interference-fitted into the opening of the venting pipe 82. The venting component 84 is rotated until the sealing plug 86 is inserted into or removed from the venting pipe 82. When the bottom end of the venting component 84 is rotated downward, the sealing plug 86 is inserted into the venting pipe 82. When the top end of the venting component 84 is rotated upward, the sealing plug 86 is removed from the venting pipe 82.

[0063] Before ligating the tissue, the sealing plug 86 is inserted into the vent pipe 82. The negative pressure suction machine is started, so that the tissue is sucked up under negative pressure to a state that is easy to ligate. After the operation, the vent component 84 is rotated until the sealing plug 86 is removed from the vent pipe 82 to release the pressure.

[0064] The implementation principle of a high-efficiency negative pressure banding device in this application embodiment is as follows:

[0065] During the procedure, the tissue is first sucked up by the negative pressure suction component 8. Then, the outer tube 3 is pulled away from the patient's tissue, so that the second locking block 32 on the outer tube 3 is locked onto the side of the first locking block 421 on the drive plate 42 away from the patient's tissue. At this time, the drive spring 43 is compressed. Then, the tissue is sucked up by the negative pressure suction component 8. Then, the drive wrench 41 is pressed down to make the second locking block 32 disengage from the first locking block 421. In order to restore its original length, the drive spring 43 pushes the outer tube 3 towards the direction closer to the patient's tissue through the first limiting ring plate 33. The push rod 7 pushes the corresponding elastic ring 5 towards the direction closer to the root of the tissue. Each elastic ring 5 moves towards the direction closer to the root of the tissue. The elastic ring 5 furthest from the handle housing 1 moves from the mounting tube 61 to the root of the tissue. The elastic ring 5 that was originally located after the one furthest from the handle housing 1 moves towards the direction closer to the root of the tissue to the current position furthest from the handle housing 1.

[0066] When another tissue needs to be ligated again, pull the outer tube 3 away from the patient tissue again, so that the second locking block 32 on the outer tube 3 is locked on the side of the first locking block 421 on the drive plate 42 away from the patient tissue. At this time, the drive spring 43 is compressed again. Then, press the drive wrench 41 down again to make the next elastic ring 5 strike the root of another tissue.

[0067] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-efficiency negative pressure banding device, characterized in that: The device includes a handle housing (1), with an extension tube (2) and an outer tube (3) at the front end of the handle housing (1). The outer tube (3) is sleeved on the outside of the extension tube (2). The extension tube (2) is fixed relative to the handle housing (1). The outer tube (3) is slidably connected to the extension tube (2). A support strip (31) is provided on the inner wall of the outer tube (3). The side of the support strip (31) away from the outer tube (3) is in contact with the outer wall of the extension tube (2). A drive assembly (4) for driving the outer tube (3) to slide is provided inside the handle housing (1). The extension tube (2) is fitted with an elastic ring (5), and multiple elastic rings (5) are equidistantly arranged along the axial direction of the extension tube (2). The elastic rings (5) are mounted on the extension tube (2) by means of an installation component (6). A push rod (7) is provided on the inner wall of the outer tube (3). The end of the push rod (7) away from the outer tube (3) extends to the elastic ring (5) and abuts against the side of the elastic ring (5) near the handle housing (1). The push rod (7) at each elastic ring (5) is located on the side of the corresponding elastic ring (5) near the handle housing (1). The end of the push rod (7) away from the outer tube (3) is inclined in the direction away from the handle housing (1). When the outer tube (3) slides away from the handle housing (1), the push rod (7) pushes the corresponding elastic ring (5) away from the handle housing (1), and the elastic ring (5) furthest from the handle housing (1) is pushed by the push rod (7) to the root of the tissue; When the outer sleeve (3) slides toward the handle housing (1), the push rod (7) returns to its original position; The handle housing (1) is provided with a negative pressure suction component (8) for suctioning tissue.

2. The high-efficiency negative pressure bandaging device according to claim 1, characterized in that: The mounting assembly (6) includes a mounting tube (61) and a limiting plug (62). The mounting tube (61) is inserted into the outer sleeve (3). The mounting tube (61) is coaxially connected to a limiting tube (611). The outer diameter of the limiting tube (611) is smaller than the outer diameter of the mounting tube (61). The limiting tube (611) is inserted into the extension tube (2). The elastic ring (5) is sleeved on the mounting tube (61). A limiting component is provided on the limiting tube (611). The limiting tube (611) is fixed in the extension tube (2) by the limiting component. The limiting plug (62) includes a plug head (621), a limiting ring (622), and a cross rod (623). The limiting ring (622) is coaxially connected to the end of the plug head (621) near the extension tube (2) and is sleeved on the mounting tube (61). The cross rod (623) is coaxially connected to the end of the plug head (621) near the extension tube (2) and is inserted into the mounting tube (61). The cross rod (623) includes four integrally formed unit plates.

3. The high-efficiency negative pressure banding device according to claim 2, characterized in that: The limiting component includes a limiting block (63), which is fixedly connected to the outer wall of the limiting tube (611). The inner wall of the extension tube (2) is provided with a relief groove (21) for the limiting block (63) to pass through along the axial direction of the extension tube (2) and a limiting groove (22) for the limiting block (63) to slide along the circumferential direction of the extension tube (2). The relief groove (21) passes through the end of the extension tube (2) away from the handle body, and the limiting groove (22) communicates with the relief groove (21). The inner wall of the limiting groove (22) is provided with a limiting protrusion (221). After the limiting block (63) rotates to abut against the inner wall of the radial end of the limiting groove (22), the limiting block (63) is stuck between the inner wall of the limiting groove (22) and the limiting protrusion (221).

4. The high-efficiency negative pressure banding device according to claim 3, characterized in that: The limiting blocks (63) are symmetrically arranged on both sides of the radial direction of the limiting tube (611), and the relief groove (21), the limiting groove (22), and the limiting protrusion (221) are all corresponding to the limiting blocks (63).

5. The high-efficiency negative pressure banding device according to claim 3, characterized in that: The mounting pipe (61) includes a first pipe section (612) and a second pipe section (613). The outer diameter of the first pipe section (612) is larger than the outer diameter of the second pipe section (613), and the outer diameter of the second pipe section (613) is larger than the outer diameter of the limiting pipe (611). The outer walls of the first pipe section (612) and the second pipe section (613) are smoothly connected. When the limiting block (63) is located in the limiting groove (22), the side of the second pipe section (613) away from the first pipe section (612) abuts against the side of the extension pipe (2) close to the mounting pipe (61). The elastic ring (5) is fitted onto the second tube section (613), and the push rod (7) pushes the elastic ring (5) from the second tube section (613) to the root of the patient's tissue; The second pipe section (613) has a positioning ring groove (6131) on its outer peripheral wall for embedding the elastic ring (5), and part of the inner peripheral wall of the elastic ring (5) is embedded in the positioning ring groove (6131).

6. The high-efficiency negative pressure banding device according to claim 1, characterized in that: The drive assembly (4) includes a drive wrench (41), a drive plate (42) and a drive spring (43). The top of the drive wrench (41) is rotatably connected to the handle housing (1) via a torsion spring. The torsion spring applies a force to the drive wrench (41) to make the end of the drive wrench (41) located outside the handle housing (1) move upward. The drive plate (42) is arranged along the axial direction of the outer sleeve (3). One end of the drive plate (42) is fixed to the top surface of the drive wrench (41). The other end of the drive plate (42) is provided with a first locking block (421). The outer sleeve (3) is provided with a second locking block (32) on the side close to the drive plate (42). The top end of the first locking block (421) close to the elastic ring (5) is provided with a first wedge surface. The top end of the second locking block (32) away from the elastic ring (5) is provided with a second wedge surface. A first limiting ring plate (33) is provided on the outer peripheral wall of the outer sleeve (3), and a second limiting ring plate (11) is provided on the inner wall of the handle housing (1). The first limiting ring plate (33) is closer to the elastic ring (5) than the second limiting ring plate (11). The driving spring (43) is located between the first limiting ring plate (33) and the second limiting ring plate (11). The middle part of the driving spring (43) abuts against the first limiting ring plate (33), and the other end of the driving spring (43) abuts against the second limiting ring plate (11).

7. The high-efficiency negative pressure banding device according to claim 1, characterized in that: Each elastic ring (5) corresponds to multiple push rods (7), and the multiple push rods (7) at each elastic ring (5) are equidistantly arranged along the circumference of the extension tube (2).

8. The high-efficiency negative pressure banding device according to claim 1, characterized in that: The negative pressure suction assembly (8) includes a suction tube (81), a vent tube (82), and a connecting tube (83). One end of the suction tube (81) is connected to and communicates with the extension tube (2) extending into the side wall of one end of the handle housing (1). The vent tube (82) is a three-way tube. The other end of the suction tube (81) is inserted into and communicates with the first port of the vent tube (82). One end of the connecting tube (83) is inserted into and communicates with the second port of the vent tube (82). The other end of the connecting tube (83) extends to the outside of the handle housing (1) and is connected to a negative pressure suction machine. A venting component (84) is provided at the third port of the vent tube (82). The side wall of the vent tube (82) is fixed to the inner wall of the handle housing (1) through an auxiliary tube (85). The venting component (84) is plate-shaped. The side wall of the middle part of the venting component (84) is rotatably connected to the handle housing (1). A sealing plug (86) is provided on the side of the venting component (84) located inside the handle housing (1). The end of the sealing plug (86) away from the venting component (84) is interference-fitted into the opening of the venting pipe (82). The venting component (84) is rotated until the sealing plug (86) is inserted into or removed from the venting pipe (82).

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