Laparoscopic liver operation retractor

Abstract

The utility model discloses a laparoscopic liver surgery retractor which comprises a handle, a retraction assembly and a locking assembly, and the handle is provided with a sliding block and an adjusting rod; the retracting assembly comprises a connecting cylinder and a movable rod, and one end of the connecting cylinder is detachably connected to the handle; one end of the movable rod abuts against the adjusting rod, and the other end of the movable rod is rotationally connected with a plurality of retraction hooks; when the sliding block slides, the adjusting rod can be driven to extend out of the handle and abut against one end of the movable rod so as to drive the retracting hooks to extend out of the other end of the connecting cylinder and be opened. Or, the adjusting rod can be driven to retract to the handle and away from one end of the movable rod, and the retracting hooks retract to the other end of the connecting cylinder; the locking assembly is used for locking the length of the adjusting rod extending out of or contracting into the handle. Therefore, one end of the connecting cylinder is detachably connected with the handle, so that the retractor can be conveniently detached and thoroughly cleaned after an operation, potential sanitation hazards and potential infection risks are effectively avoided, and the use safety and maintenance convenience of the retractor are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a laparoscopic liver surgery retractor. Background Art

[0002] In the field of abdominal surgery, patients need to lie flat on the operating table during laparoscopic liver surgery. At this time, due to the action of gravity, the liver adheres to the bottom of the abdominal cavity, covering the part that needs surgery. Therefore, tools are needed to lift and traction the liver for surgical operations.

[0003] In the prior art, such as a laparoscopic liver retractor disclosed in the patent authorization number CN217090800U, the utility model discloses a laparoscopic liver retractor, including a column cylinder, a liver retracting hook finger and a rotary knob. A handle is provided on the right side of the column cylinder, a rotary knob is provided inside the column cylinder, the rotary knob is rotatably connected to the inner wall of the column cylinder, a push-pull hole is opened on the left side of the column cylinder, and a liver retracting hook finger is provided on the left side of the column cylinder. The laparoscopic liver retractor is provided with components such as a rotary knob for adjusting the expansion and contraction states of the liver retracting hook finger to facilitate use and storage, and a locking component for keeping the liver retracting hook finger in an expanded state to reduce the physical consumption of the user, thus facilitating the use of the liver retractor.

[0004] However, it is found that there are still the following problems in the actual use process. The overall structure is non-detachable and no sealing ring is provided in the push-pull hole. After some liquids contacted during the operation enter the inside of the column cylinder, it is difficult to clean it thoroughly, resulting in health hazards and potential infection risks.

[0005] Therefore, it is urgent to design a laparoscopic liver surgery retractor to overcome the deficiencies of the prior art. Summary of the Utility Model

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides a laparoscopic liver surgery retractor. By detachably connecting one end of the connecting cylinder to the handle, it is not only convenient to disassemble and thoroughly clean it after the operation, but also effectively avoids health hazards and potential infection risks, improving the use safety and maintenance convenience of the retractor.

[0007] The technical solution adopted by the utility model to solve its problems is:

[0008] A laparoscopic liver surgery retractor, comprising:

[0009] A handle, which is provided with a slider and an adjusting rod connected to the slider;

[0010] The retraction assembly comprises a connecting tube and a movable rod, wherein one end of the connecting tube is detachably connected to the handle; one end of the movable rod abuts against the adjusting rod, and the other end of the movable rod is rotatably connected to a plurality of retraction hooks;

[0011] When the slider slides, it can drive the adjusting rod to extend out of the handle and press one end of the movable rod, so as to drive the plurality of retracting hooks to extend out of the other end of the connecting tube and spread apart from each other; or, it can drive the adjusting rod to retract into the handle and away from one end of the movable rod, and the plurality of retracting hooks to retract into the other end of the connecting tube;

[0012] The locking assembly is used to lock the length of the adjusting rod extending from or contracting into the handle.

[0013] Furthermore, the retraction assembly further comprises an elastic member, which is sleeved on one end of the movable rod. When the adjustment rod extends out of the handle and presses one end of the movable rod, a plurality of the retraction hooks extend out of the other end of the connecting tube, and the elastic member is compressed.

[0014] When the adjusting rod is retracted to the handle and away from one end of the movable rod, the elastic member releases elastic force to one end of the movable rod to drive a plurality of the retracting hooks to retract to the other end of the connecting tube.

[0015] Furthermore, a connection cavity is provided in the connecting tube, the movable rod is slidably arranged in the connection cavity, a limiting boss is provided in the connection cavity, and one end of the elastic member abuts against the limiting boss;

[0016] One end of the movable rod is provided with a detachably connected limiting sleeve, and the other end of the elastic member abuts against one side of the limiting sleeve;

[0017] The adjusting rod presses on the limiting sleeve so that the limiting sleeve moves close to the limiting boss and compresses the elastic member;

[0018] When the adjusting rod is away from the limiting sleeve, the elastic member releases the elastic force to act on the limiting sleeve and drives the limiting sleeve to move closer to the adjusting rod and abut against the adjusting rod.

[0019] Furthermore, a protrusion is provided at one end of the handle, an external thread is provided on the protrusion, a connecting sleeve is provided at one end of the connecting tube, an internal thread is provided in the connecting sleeve, and the connecting sleeve is threadedly connected to the protrusion.

[0020] Furthermore, a sealing ring is included. A groove is formed on the protrusion. The sealing ring is installed in the groove to achieve waterproof sealing when the adjusting rod is extended from or retracted from the handle.

[0021] Further, a chute that cooperates with the slider is formed on the handle; a through hole that cooperates with the adjusting rod is further formed on the handle, and the adjusting rod is slidably disposed in the through hole and can slide relative to the through hole to extend out of or retract into the handle.

[0022] Further, the locking assembly includes a positioning opening formed on the chute and a spring catch formed on the slider. When the slider slides in the chute, the spring catch snaps into the positioning opening to achieve locking.

[0023] Further, the locking assembly further includes an elastic sheet. An installation groove is formed on the slider, and an extending opening is formed in the installation groove. The elastic sheet is installed in the installation groove, and one end of the elastic sheet extends out of the extending opening to form the spring catch.

[0024] Further, the retractor assembly further includes an elastic sheet connected between two adjacent retractor hooks. When a plurality of the retractor hooks extend out of the other end of the connecting cylinder, the elastic sheet provides an elastic force for the plurality of retractor hooks to spread apart from each other.

[0025] Further, storage grooves are formed on two adjacent retractor hooks. One end of the elastic sheet is connected to one of the storage grooves, and the other end of the elastic sheet is connected to the other storage groove;

[0026] When a plurality of the retractor hooks contract to the other end of the connecting cylinder, the elastic sheet is stored in the storage groove.

[0027] In summary, the present utility model has the following technical effects:

[0028] 1. For the laparoscopic liver surgery retractor of the present utility model, by detachably connecting one end of the connecting cylinder to the handle, it is not only convenient to disassemble and thoroughly clean it after the operation, but also effectively avoids health hazards and potential infection risks, improving the safety in use and the convenience of maintenance of the retractor.

[0029] 2. For the laparoscopic liver surgery retractor of the present utility model, by providing a detachable limit sleeve at the other end of the movable rod, it can be disassembled after the operation, and the elastic member, the movable rod, and the connecting cylinder can be separated, so as to thoroughly clean the connecting cylinder, the movable rod, a plurality of retractor hooks rotatably connected to the other end of the movable rod, and the elastic member, avoiding health hazards and potential infection risks.

[0030] 3. The laparoscopic liver surgery retractor of the utility model has a positioning hole on the slide groove. When the slider slides, the spring buckle is buckled into the positioning hole to adjust the length of the adjusting rod extending out of or retracting in the handle, thereby adjusting the angle of a plurality of retracting hooks at the other end of the movable rod extending out of the other end of the connecting tube and being spread apart or closed together under the elastic force of the elastic sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structure of the utility model laparoscopic liver surgery retractor;

[0032] Figure 2 It is a cross-sectional schematic diagram of the utility model of the laparoscopic liver surgery retractor;

[0033] Figure 3 for Figure 2 The enlarged schematic diagram of the middle A part;

[0034] Figure 4 This is an exploded schematic diagram of the handle of the utility model laparoscopic liver surgery retractor;

[0035] Figure 5 It is an exploded schematic diagram of the connecting tube in the retractor for laparoscopic liver surgery of the utility model;

[0036] Figure 6 This is a schematic diagram of the structure of the mounting slot in the retractor for laparoscopic liver surgery of the utility model;

[0037] Figure 7 It is a structural schematic diagram of the extension port in the utility model of the laparoscopic liver surgery retractor;

[0038] Figure 8 The utility model is a schematic diagram of the structure of the handle of the retractor for laparoscopic liver surgery.

[0039] The meanings of the reference numerals are as follows:

[0040] 1. Handle; 11. Slide groove; 111. Positioning opening; 12. Protrusion; 121. Groove; 13. Sealing ring; 14. Through hole; 2. Connecting tube; 21. Connecting sleeve; 211. Raised strip; 22. Limiting boss; 23. Limiting protrusion; 3. Sliding block; 31. Adjusting rod; 32. Anti-slip groove; 33. Mounting groove; 331. Extending opening; 34. Elastic sheet; 341. Spring buckle; 35. Cover plate; 351. Abutting protrusion; 36. First screw; 4. Movable rod; 41. Rotating shaft; 42. Limiting sleeve; 421. Pressing block; 5. Elastic member; 6. Pull-out hook; 61. Storage slot; 7. Elastic sheet; 8. Back cover; 81. Second screw. DETAILED DESCRIPTION

[0041] For better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0042] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the module or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0044] As Figure 1-8 shown, a laparoscopic liver surgery retractor includes a handle 1, a retracting assembly, and a locking assembly. The handle 1 is provided with a slider 3 and an adjusting rod 31 connected to the slider 3; the retracting assembly includes a connecting cylinder 2 and a movable rod 4. One end of the connecting cylinder 2 is detachably connected to the handle 1; one end of the movable rod 4 abuts against the adjusting rod 31, and the other end thereof is rotatably connected with a plurality of retracting hooks 6; when the slider 3 slides, it can drive the adjusting rod 31 to extend out of the handle 1 and press one end of the movable rod 4, so as to drive a plurality of retracting hooks 6 to extend out of the other end of the connecting cylinder 2 and expand mutually; or, it can drive the adjusting rod 31 to contract into the handle 1 and away from one end of the movable rod 4, and a plurality of retracting hooks 6 contract into the other end of the connecting cylinder 2; the locking assembly is used to lock the length of the adjusting rod 31 extending out of or contracting into the handle 1 to realize adjusting the length of the other end of the movable rod 4 extending out of or contracting into the other end of the connecting cylinder 2.

[0045] Based on the above structure, when using the laparoscopic liver surgery retractor of the present utility model, by sliding the slider 3, the slider 3 drives the adjusting rod 31 to extend out of or contract into the handle 1. One end of the connecting cylinder 2 is detachably connected to the handle 1, and one end of the movable rod 4 abuts against the adjusting rod 31. When the adjusting rod 31 extends out of the handle 1, it presses one end of the movable rod 4, driving a plurality of retracting hooks 6 rotatably connected to the other end of the movable rod 4 to extend out of the other end of the connecting cylinder 2 and expand mutually, so as to realize the retracting operation during the surgery. When the adjusting rod 31 contracts into the handle 1, it moves away from one end of the movable rod 4, and the other end of the movable rod 4 contracts into the other end of the connecting cylinder 2, and at the same time drives a plurality of retracting hooks 6 to close and contract into the other end of the connecting cylinder 2.

[0046] When the slider 3 slides and drives the adjusting rod 31 to extend out of or retract into the handle 1, the length of the adjusting rod 31 extending out of or retracting into the handle 1 can be locked by the locking assembly, so as to realize adjusting the angle range of several retractor hooks 6 spreading apart from each other or closing together, thereby adjusting the retracting angle required during the operation.

[0047] One end of the connecting cylinder 2 is detachably connected to the handle 1. After the operation, the connecting cylinder 2 can be detached from the handle 1, and the connecting cylinder 2, the movable rod 4 and several retractor hooks 6 rotatably connected to the other end of the movable rod 4 can be separated from the handle 1 for cleaning, thus avoiding incomplete cleaning inside the retractor, resulting in hygiene hazards and potential infection risks.

[0048] Furthermore, the retracting assembly further includes an elastic member 5 sleeved on one end of the movable rod 4. When the adjusting rod 31 extends out of the handle 1 and presses against one end of the movable rod 4, several retractor hooks 6 extend out of the other end of the connecting cylinder 2, and the elastic member 5 is compressed; when the adjusting rod 31 retracts into the handle 1 and moves away from one end of the movable rod 4, the elastic member 5 releases elastic force to one end of the movable rod 4 to drive several retractor hooks 6 to retract into the other end of the connecting cylinder 2.

[0049] Specifically, a through-connection cavity is formed in the connecting cylinder 2, the movable rod 4 is slidably arranged in the through-connection cavity, a limiting boss 22 is arranged in the through-connection cavity, and one end of the elastic member 5 abuts against the limiting boss 22; a limiting sleeve 42 is detachably connected to one end of the movable rod 4, and the other end of the elastic member 5 abuts against one side of the limiting sleeve 42; the adjusting rod 31 presses against the limiting sleeve 42 to make the limiting sleeve 42 move close to the limiting boss 22 and compress the elastic member 5; when the adjusting rod 31 moves away from the limiting sleeve 42, the elastic member 5 releases elastic force acting on the limiting sleeve 42 and drives the limiting sleeve 42 to move close to the adjusting rod 31 and abut against the adjusting rod 31.

[0050] It should be noted that in this embodiment, the limiting sleeve 42 is threadedly connected to one end of the movable rod 4 to achieve detachable connection. Secondly, a pressing block 421 is rotatably connected to the limiting sleeve 42, and when the adjusting rod 31 extends out of the handle 1, it presses against the pressing block 421, and the elastic force released by the elastic member 5 makes the pressing block 421 abut against the adjusting rod 31; after the operation, the limiting sleeve 42 together with the pressing block 421 can be detached, and the elastic member 5, the movable rod 4, and the connecting cylinder 2 can be separated, so as to thoroughly clean the connecting cylinder 2, the movable rod 4, several retractor hooks 6 rotatably connected to the other end of the movable rod 4, and the elastic member 5, avoiding hygiene hazards and potential infection risks.

[0051] Furthermore, a protrusion 12 is arranged at one end of the handle 1, an external thread is formed on the protrusion 12, a connecting sleeve 21 is arranged at one end of the connecting cylinder 2, an internal thread is arranged inside the connecting sleeve 21, and the connecting sleeve 21 is threadedly connected to the protrusion 12.

[0052] Specifically, a plurality of rib strips 211 are provided on the connecting sleeve 21 and arranged circumferentially along the connecting sleeve 21 to increase the friction of the connecting sleeve 21, improve the fastening effect of the threaded connection between the connecting sleeve 21 and the protrusion 12, and thus enhance the firmness of the connection between the connecting sleeve 21 and the protrusion 12 on the handle 1.

[0053] Furthermore, the laparoscopic liver surgery retractor of the present utility model further includes a sealing ring 13. A groove 121 is formed on the protrusion 12, and the sealing ring 13 is installed in the groove 121 to achieve waterproof sealing when the adjusting rod 31 extends out of or retracts into the handle 1.

[0054] It should be noted that the sealing ring 13 is installed in the groove and sleeved on the adjusting rod 31. The connecting sleeve 21 is threadedly connected to the protrusion 12 and abuts against one side of the sealing ring 13 to limit the adjusting rod 31 to extend out of or retract into the handle 1 and drive the sealing ring 13 to move, thereby achieving a waterproof sealing effect for the adjusting rod 31 to extend out of or retract into the handle 1.

[0055] In addition, since the adjusting rod 31 extends out of or retracts into the handle 1 and rubs against the sealing ring 13, which will cause wear of the sealing ring 13. Therefore, the sealing ring 13 can be replaced after the connecting sleeve 21 and the protrusion 12 are disassembled and separated.

[0056] Refer to Figure 8 , a chute 11 matching with the slider 3 is formed on the handle 1, and a through hole 14 matching with the adjusting rod 31 is further formed on the handle 1. The adjusting rod 31 is slidably arranged in the through hole 14 and can slide relative to the through hole 14, and can drive the adjusting rod 31 to slide relative to the through hole 14 to extend out of or retract into the handle 1 when the slider 3 slides relative to the chute 11. It should be noted that the through hole 14 penetrates the chute 11.

[0057] Specifically, the locking assembly includes a positioning port 111 arranged on the chute 11 and a spring buckle 341 arranged on the slider 3. When the slider 3 slides in the chute 11, the spring buckle 341 is buckled into the positioning port 111 to achieve locking.

[0058] Among them, the locking assembly further includes an elastic piece 34. An installation groove 33 is formed on the slider 3, and an extension port 331 is formed in the installation groove 33. The elastic piece 34 is installed in the installation groove 33, and one end of the elastic piece 34 extends out of the extension port 331 to form the spring buckle 341.

[0059] Specifically, a plurality of positioning openings 111 are provided on the sliding groove 11 at intervals along the length direction of the sliding groove 11. An installation groove 33 is formed on the sliding block 3. The elastic piece 34 is bent and installed in the installation groove 33. The bent part of the elastic piece 34 is one end of the elastic piece 34 and extends out of an extension opening 331 formed in the installation groove 33 to form a snap button 341. When the sliding block 3 slides in the sliding groove 11, the snap button 341 is snapped into the spaced positioning openings 111 to lock the position of the sliding block 3 in the sliding groove 11, so as to adjust the length of the adjusting rod 31 extending out of or contracting into the handle 1, and the distance of the top pressure on one end of the movable rod 4, so as to adjust the angle at which a plurality of retractor hooks 6 rotatably connected to the other end of the movable rod 4 extend out of the other end of the connecting cylinder 2 and spread apart from each other; or, the angle at which the plurality of retractor hooks 6 close together to contract to the other end of the connecting cylinder 2.

[0060] It should be noted that in this embodiment, the snap button 341 is snapped into one of the positioning openings 111 to achieve locking. The sliding block 3 can be slid under the action of an external force to compress the bent part of the elastic piece 34, that is, the snap button 341 is disengaged from the positioning opening 111 to achieve unlocking. Until the snap button 341 reaches another positioning opening 111, the elastic piece 34 releases elastic force and the bent part of the elastic piece 34 is snapped into the positioning opening 111, that is, the snap button 341 is snapped into the positioning opening 111 to achieve locking.

[0061] In addition, in this embodiment, anti-slip grooves 32 are also provided at intervals on the top of the sliding block 3 to increase the friction force for the user to slide the sliding block 3, so that the snap button 341 is disengaged from one of the positioning openings 111 and snapped into another positioning opening 111 to achieve locking, and further achieve adjusting the adjusting rod 31 to extend out of or contract into the handle 1.

[0062] Specifically, in this embodiment, a cover plate 35 is further included. A contact convex block 351 is provided on the cover plate 35. The cover plate 35 is covered and fastened in the installation groove 33 by a first screw 36. The contact convex block 351 abuts against the elastic piece 34 in the installation groove 33 to prevent the elastic piece 34 from slipping out of the installation groove 33 when being compressed, so as to cause the locking failure of the snap button 341 and the positioning opening 111. Of course, when the elastic force of the elastic piece 34 fails, the elastic piece 34 located in the installation groove 33 can be replaced by disassembling the cover plate 35.

[0063] Refer to again Figure 5, the retractor assembly further includes an elastic sheet 7 connected between two adjacent retractor hooks. A plurality of retractor hooks 6 are rotatably connected to the other end of the movable rod 4 through a rotating shaft 41. When a plurality of retractor hooks 6 extend out of the other end of the connecting cylinder 2, the elastic sheet 7 provides an elastic force for the plurality of retractor hooks 6 to spread apart from each other. Specifically, a receiving groove 61 is formed on each of the two adjacent retractor hooks 6. One end of the elastic sheet 7 is connected to one of the receiving grooves 61, and the other end of the elastic sheet 7 is connected to the other receiving groove 61. When a plurality of retractor hooks 6 contract to the other end of the connecting cylinder 2, the elastic sheet 7 is received in the receiving groove 61.

[0064] During use, when the slider 3 slides and drives the adjusting rod 31 to extend out of the handle 1, the limiting sleeve 42 and the limiting boss 22 apply the elastic force provided by the elastic member 5 to the limiting sleeve 42, and drive the other end of the movable rod 4 to extend out of the other end of the connecting cylinder 2. Driven by the other end of the movable rod 4, a plurality of retractor hooks 6 rotate relative to each other and spread apart under the elastic force of the elastic sheet 7 to achieve the retracting function during the surgical process.

[0065] When the slider 3 slides and drives the adjusting rod 31 to contract into the handle 1, the elastic member 5 applies an elastic force to the limiting sleeve 42, and drives the other end of the movable rod 4 to contract into the other end of the connecting cylinder 2. Driven by the other end of the movable rod 4, a plurality of retractor hooks 6 rotate and close together. The elastic sheet 7 is received in the receiving groove 61 and contracts with a plurality of retractor hooks 6 to the other end of the connecting cylinder 2.

[0066] Furthermore, in this embodiment, a rear cover 8 is further provided on the handle 1 and is snap-connected to one end of the sliding groove 11 to limit one end of the slider 3. Of course, the rear cover 8 can also be fixedly connected to the handle 1 through a buckle or a second screw 81. By using the buckle connection, it can be detachably connected to the handle 1. During the surgical process, when liquid enters the sliding groove 11, the slider 3 and the adjusting rod 31 can be slid out from one end of the sliding groove 11 and separated from the handle 1 by removing the rear cover 8, so as to thoroughly clean the handle 1, the slider 3 and the adjusting rod 31, thereby eliminating potential hygiene hazards and infection risks.

[0067] It should be noted that, in this embodiment, the elastic member 5 is a spring.

[0068] In summary, for the laparoscopic retractor of the present invention, by detachably connecting one end of the connecting cylinder 2 to the handle 1, it is not only convenient to disassemble and thoroughly clean it after the operation, but also effectively avoids potential hygiene hazards and infection risks, improving the safety and maintenance convenience of the retractor.

[0069] The laparoscopic liver surgery retractor of the utility model provides a detachable limiting sleeve 42 at the other end of the movable rod 4, which can be disassembled after the operation, and the elastic member 5, the movable rod 4, and the connecting tube 2 can be separated, so that the connecting tube 2, the movable rod 4, a plurality of retracting hooks 6 rotatably connected to the other end of the movable rod 4, and the elastic member 5 can be thoroughly cleaned, avoiding health hazards and potential infection risks.

[0070] The laparoscopic liver surgery retractor of the utility model has a positioning hole 111 formed on the slide groove 11. When the slider 3 slides, the spring buckle 341 is buckled into the positioning hole 111 to adjust the length of the adjusting rod 31 extending out of or contracting in the handle 1, thereby adjusting the angle at which the multiple retracting hooks 6 at the other end of the movable rod 4 extend out of the other end of the connecting tube 2 and are mutually spread open or closed under the elastic force of the elastic sheet 7.

[0071] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0072] It should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the modules or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0073] In addition, in the description of the present utility model, "multiple" and "several" mean two or more than two, unless otherwise clearly and specifically defined.

[0074] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A laparoscopic liver surgery retractor, characterized in that: include: A handle, which is provided with a slider and an adjusting rod connected to the slider; The retraction assembly comprises a connecting tube and a movable rod, wherein one end of the connecting tube is detachably connected to the handle; one end of the movable rod abuts against the adjusting rod, and the other end of the movable rod is rotatably connected to a plurality of retraction hooks; When the slider slides, it can drive the adjusting rod to extend out of the handle and press one end of the movable rod, so as to drive the plurality of retracting hooks to extend out of the other end of the connecting tube and spread apart from each other; or, it can drive the adjusting rod to retract into the handle and away from one end of the movable rod, and the plurality of retracting hooks to retract into the other end of the connecting tube; The locking assembly is used to lock the length of the adjusting rod extending from or contracting into the handle.

2. The laparoscopic liver surgery retractor according to claim 1, characterized in that: The retraction assembly further comprises an elastic member, which is sleeved on one end of the movable rod. When the adjustment rod extends out of the handle and presses one end of the movable rod, a plurality of retraction hooks extend out of the other end of the connecting tube, and the elastic member is compressed. When the adjusting rod is retracted to the handle and away from one end of the movable rod, the elastic member releases elastic force to one end of the movable rod to drive a plurality of the retracting hooks to retract to the other end of the connecting tube.

3. The laparoscopic liver surgery retractor according to claim 2, characterized in that: A connection cavity is provided in the connecting tube, the movable rod is slidably arranged in the connection cavity, a limiting boss is provided in the connection cavity, and one end of the elastic member abuts against the limiting boss; One end of the movable rod is provided with a detachably connected limiting sleeve, and the other end of the elastic member abuts against one side of the limiting sleeve; The adjusting rod presses on the limiting sleeve so that the limiting sleeve moves close to the limiting boss and compresses the elastic member; When the adjusting rod is away from the limiting sleeve, the elastic member releases the elastic force to act on the limiting sleeve and drives the limiting sleeve to move closer to the adjusting rod and abut against the adjusting rod.

4. The laparoscopic liver surgery retractor according to any one of claims 1 to 3, characterized in that: A protrusion is provided at one end of the handle, and an external thread is provided on the protrusion. A connecting sleeve is provided at one end of the connecting tube, and an internal thread is provided in the connecting sleeve. The connecting sleeve is threadedly connected to the protrusion.

5. The laparoscopic liver surgery retractor according to claim 4, characterized in that: It also includes a sealing ring. The protrusion is provided with a groove. The sealing ring is installed in the groove to achieve waterproof sealing when the adjusting rod is extended from or retracted from the handle.

6. The laparoscopic liver surgery retractor according to any one of claims 1 to 3, characterized in that: The handle is provided with a slide groove matched with the slider; the handle is also provided with a through hole matched with the adjustment rod, the adjustment rod is slidably arranged in the through hole and can slide relative to the through hole to extend from or retract from the handle.

7. The laparoscopic liver surgery retractor according to claim 6, characterized in that: The locking assembly includes a positioning opening arranged on the slide slot and a spring buckle arranged on the slider. When the slider slides in the slide slot, the spring buckle is buckled into the positioning opening to achieve locking.

8. The laparoscopic liver surgery retractor according to claim 7, characterized in that: The locking assembly also includes an elastic sheet. The slider is provided with a mounting groove, the mounting groove is provided with a protruding opening, the elastic sheet is installed in the mounting groove, and one end of the elastic sheet protrudes from the protruding opening to form the spring buckle.

9. The laparoscopic liver surgery retractor according to any one of claims 1 to 3, characterized in that: The retraction assembly further comprises an elastic sheet connected between two adjacent retraction hooks. When a plurality of the retraction hooks extend out of the other end of the connecting tube, the elastic sheet provides elastic force for the plurality of the retraction hooks to be mutually spread apart.

10. The laparoscopic liver surgery retractor according to claim 9, characterized in that: Two adjacent retraction hooks are each provided with a receiving groove, one end of the elastic sheet is connected to one of the receiving grooves, and the other end of the elastic sheet is connected to the other receiving groove; When the plurality of retracting hooks are retracted to the other end of the connecting tube, the elastic sheet is received in the receiving groove.

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