Blood vessel drag hook for laparoscopic surgery

Abstract

The invention relates to a blood vessel drag hook for laparoscopic surgery, and relates to the technical field of medical instruments, the blood vessel drag hook comprises a shell, and the blood vessel drag hook is integrally installed on the shell; the drag hook bodies are rotationally mounted on the shell, and at least two drag hook bodies are arranged on the shell at intervals; the adjusting assembly is installed on the shell, and the adjusting assembly is used for controlling the drag hook body to be unfolded; the protection assembly is installed on the shell, and the protection assembly is used for protecting the drag hook body from being excessively unfolded; and the locking assembly is installed on the shell, and the locking assembly is used for keeping the drag hook body in an unfolded state. When an operation area needs to be expanded, the auxiliary tube does not need to be stretched by using too many blood vessel drag hooks, only the drag hook body needs to be unfolded, and the operation efficiency of a shell operation is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a blood vessel retractor for laparoscopic surgery. Background Art

[0002] At present, the vascular retractor is a medical device that is used for lymph node dissection during gynecological tumor surgery. It not only pulls open the blood vessels to protect them, but also facilitates complete lymph node dissection.

[0003] The purpose of using a vascular retractor is to minimize damage to surrounding tissues while providing a clearer field of view to ensure the accuracy and safety of the operation.

[0004] The existing Chinese patent with publication number CN215384259U discloses a laparoscopic surgical vascular retractor. It includes a shell, a rotating assembly and a retractor; the shell includes a tube body and a shell, the two ends of the tube body are respectively a first end and a second end, the shell is fixedly connected to the first end of the tube body and is in communication with the tube body; the shell has an opening on the surface away from the tube body; the rotating assembly is installed in the shell, the rotating assembly includes a gear and a shaft rod, the shaft rod is passed through the axial center of the gear and is fixedly connected to the gear, and the two ends of the shaft rod are rotatably connected to the shell; the retractor includes a rod body and a curved hook; the two ends of the rod body are respectively a first end and a second end, and the rod body is arranged in the shell; a plurality of teeth meshing with the gear are fixed on the side of the first end of the rod body; the curved hook is fixedly connected to the second end of the rod body and is located outside the second end of the tube body; the first handle is located in the opening of the shell, and the end of the first handle is fixedly connected to the shaft rod.

[0005] In the related technology, the hook bypasses the lower side of the blood vessel, and then the gear is driven to rotate on the shell through the first handle. Since the teeth on the hook are engaged with the gear, the hook slides on the rod body as the gear rotates. When the first handle and the second handle are merged, the hook extends from the tube body, and then the hook is bypassed from under the blood vessel. After that, the first handle and the second handle are opened, and the hook is retracted from the tube body. At this time, the blood vessel is pulled away from its original position, providing the surgeon with a better field of vision and operating space.

[0006] Regarding the above-mentioned related technologies, after the curved hook pulls the blood vessel open, the stretched part of the blood vessel will form a triangular structure. If the surgical area needs to be expanded, the blood vessel needs to be further stretched. If the blood vessel is over-stretched, it will cause damage to the patient's blood vessel. In order to reduce the damage to the blood vessel, multiple retractor devices will be selected to stretch the blood vessel, which reduces the efficiency of the laparoscopic surgery process. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a blood vessel retractor for laparoscopic surgery, which solves the technical problem that when the surgical area needs to be expanded, the retractor further stretches the blood vessel or uses multiple blood vessel retractors, which affects the efficiency of laparoscopic surgery.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A vascular retractor for laparoscopic surgery, comprising:

[0010] A housing, on which the blood vessel retractor is integrally mounted;

[0011] A hook body, the hook body being rotatably mounted on the housing, and at least two hook bodies being spaced apart from each other on the housing;

[0012] An adjusting component, the adjusting component is mounted on the housing, and the adjusting component is used to control the deployment of the hook body;

[0013] A protection component, the protection component is installed on the shell, and the protection component is used to protect the transition and expansion of the hook body;

[0014] A locking assembly is mounted on the housing and is used to keep the hook body in an expanded state.

[0015] Through the above technical solution, the hook body hooks up the blood vessel, and then the adjustment component controls several hook bodies to unfold. During the process of the hook body pulling the blood vessel for surgery, the locking component keeps the hook body in the unfolded state to prevent the blood vessel from retracting and affecting the surgery. In addition, the protection component is used to prevent the hook body from causing damage to the blood vessel during the process of pulling the blood vessel. When the surgical area needs to be expanded, there is no need to use too many blood vessel hooks to stretch the auxiliary tube, and only the hook body needs to be unfolded, which greatly improves the operating efficiency of the shell surgery.

[0016] Furthermore, the adjustment component includes an adjustment rope, the hook body is rotatably mounted on the shell, one end of the adjustment rope is wound around the shell, and the other end is connected to the hook body.

[0017] Through the above technical solution, the deployment efficiency of the hook body is improved by pulling the adjustment rope.

[0018] Furthermore, a rotating shaft is rotatably mounted on the shell, the rotating shaft is rotatably mounted on the shell, a roller is mounted on the rotating shaft, a rolling groove is formed on the roller, and one end of the adjusting rope is wound around the rolling groove.

[0019] Through the above technical solution, the roller is rotatably installed on the rotating shaft, and one end of the adjusting rope is wrapped around the rolling groove of the roller. During the process of pulling the adjusting rope, there is a certain friction between the adjusting rope and the roller. As the adjusting rope is pulled, the roller rotates on the rotating shaft.

[0020] Furthermore, a bearing is provided between the rotating shaft and the housing, the bearing is mounted on the rotating shaft, and a first torsion spring is provided between the rotating shaft and the housing, the first torsion spring is pressed tightly between the rotating shaft and the housing.

[0021] Through the above technical solution, the rotating shaft is rotatably mounted on the housing through the bearing, and the first torsion spring is pressed tightly between the rotating shaft and the housing, thereby preventing the adjusting rope from being excessively pulled.

[0022] Furthermore, the adjustment assembly also includes a first handle and a second handle, the first handle is provided with a first turntable, the second handle is provided with a second turntable, the shell is installed on the second turntable, the first turntable is provided with a rotating bolt, one end of the rotating bolt passes through the first turntable and the second turntable in sequence, and one end of the rotating bolt passing through the second turntable is provided with a connecting nut, and the connecting nut is threadedly connected to the rotating bolt; one end of the adjustment rope is connected to the first turntable.

[0023] Through the above technical solution, the first turntable and the second turntable are rotated by rotating the bolt, and the first handle and the second handle drive the first turntable and the second turntable to rotate. When the first handle and the second handle move toward each other, the first turntable drives the adjustment rope to stretch.

[0024] Furthermore, the locking assembly includes a sliding sleeve, which is slidably installed on the first handle, a limiting groove is provided on the second handle, and a clamping groove is provided on the second handle, the clamping groove is connected to the limiting groove, a limiting block is provided on the sliding sleeve, and the limiting block on the sliding sleeve is clamped in the limiting groove through the clamping groove.

[0025] Through the above technical solution, after the first handle and the second handle are closed, the sliding sleeve slides on the first handle. As the sliding sleeve slides, the limit block on the sliding sleeve passes through the slot and engages with the limit slot, thereby enabling the first handle and the second handle to be locked in a closed state.

[0026] Furthermore, a guide groove is provided on the first handle, a rotating wheel is arranged in the guide groove, a connecting bolt is provided on the sliding sleeve, and one end of the connecting bolt passes through the sliding sleeve and is connected to the rotating wheel.

[0027] Through the above technical solution, the roller is slidably installed in the guide groove of the first handle, and then one end of the connecting bolt passes through the sliding sleeve and is connected to the roller in the guide groove. The roller is installed on the sliding sleeve through the connecting bolt, so that the stability of the sliding sleeve on the first handle is improved.

[0028] Furthermore, a guide rod is formed on the shell, one end of the guide rod is threadedly connected to the shell, and the other end extends to a side away from the shell, and the adjustment rope passes through the guide rod.

[0029] Through the above technical solution, the guide rod is installed on the shell, and one end of the adjustment rope passes through the guide rod, so that the retractor body can be extended into the human body to operate the blood vessel, thereby improving the stretching range of the blood vessel retractor.

[0030] Furthermore, the protective component includes a first magnet and a second magnet, the adjustment rope on the hook body is connected to the first magnet, the adjustment rope on the first handle is connected to the second magnet, and the first magnet and the second magnet are magnetically matched.

[0031] Through the above technical solution, the first magnet and the second magnet are magnetically attracted to each other. When the tension between the two sections of the adjustment rope exceeds the magnetic attraction force between the first magnet and the second magnet, the two ends of the adjustment rope will separate, thereby preventing the hook body from excessively unfolding.

[0032] Furthermore, a second torsion spring is provided between the hook body and the guide rod, and the second torsion spring is pressed tightly between the hook body and the guide rod.

[0033] Through the above technical solution, the second torsion spring is pressed tightly between the hook body and the guide rod, so that the hook body can be automatically closed.

[0034] In summary, the present application includes at least one of the following beneficial technical effects of a vascular retractor for laparoscopic surgery:

[0035] 1. The retractor body hooks up the blood vessel, and then the adjustment component controls several retractor bodies to unfold. During the process of the retractor body pulling the blood vessel for surgery, the locking component keeps the retractor body in the unfolded state to prevent the blood vessel from retracting and affecting the surgery. In addition, the protection component is used to prevent the retractor body from causing damage to the blood vessel during the process of pulling the blood vessel. When the surgical area needs to be expanded, there is no need to use too many blood vessel retractors to stretch the auxiliary tube. Only the retractor body needs to be unfolded, which greatly improves the operating efficiency of the outer shell surgery;

[0036] 2. The first handle and the second handle are used to drive the first turntable and the second turntable to rotate, and the adjustment rope is wound around the roller, so that the convenience of adjusting the hook body by the adjustment rope is improved;

[0037] 3. The mutual magnetic attraction between the second magnets and the provision of the second torsion spring prevents the hook body from excessively opening and causing damage to the blood vessel. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the overall structure of a vascular retractor for laparoscopic surgery provided by this embodiment;

[0039] Figure 2 This is a schematic diagram of the main structure of the hook body provided in this embodiment;

[0040] Figure 3 is a cross-sectional view of the guide rod structure mainly provided by this embodiment;

[0041] Figure 4 It is a schematic diagram of the structure of the first rotating disk and the second rotating disk mainly provided in this embodiment;

[0042] Figure 5 It is an exploded schematic diagram of the sleeve structure mainly provided in this embodiment.

[0043] Figure numerals: 1. shell; 11. guide rod; 2. hook body; 3. adjustment assembly; 31. adjustment rope; 32. rotating shaft; 33. bearing; 34. roller; 341. rolling groove; 35. first torsion spring; 351. second torsion spring; 36. first handle; 361. first turntable; 362. rotating bolt; 363. connecting nut; 37. second handle; 371. second turntable; 4. protection assembly; 41. first magnet; 42. second magnet; 5. locking assembly; 51. sliding sleeve; 511. limit block; 52. guide groove; 53. rotating wheel; 531. connecting bolt; 54. limit groove; 541. slot. DETAILED DESCRIPTION

[0044] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments.

[0045] The following is combined with Figure 1-5 This application is described in further detail.

[0046] The embodiment of the present application discloses a blood vessel retractor for laparoscopic surgery.

[0047] Reference Figure 1-Figure 3A vascular retractor for laparoscopic surgery includes a housing 1, a retractor body 2 is arranged on the housing 1, and at least two retractor bodies 2 are arranged at intervals. When in use, the two retractor bodies 2 are opened to expand the stretching range of multiple blood vessels. An adjustment component 3, a protection component 4 and a locking component 5 are arranged on the housing 1. The adjustment component 3 controls the expansion of the retractor body 2, the protection component 4 is used to prevent the excessive expansion of the retractor body 2 from causing damage to the blood vessel, and the locking component 5 keeps the retractor body 2 in an expanded state.

[0048] The purpose of using the retractor body 2 is to reduce the clamping of the blood vessel, protect the blood vessel, minimize the damage to the surrounding tissue, and provide a clearer field of vision to ensure the accuracy and safety of the operation.

[0049] Reference Figure 3 The housing 1 is provided with a guide rod 11, one end of which is threadedly connected to the housing 1, and the other end of which extends to a side away from the housing 1. The guide rod 11 is in the shape of a hollow round rod as a whole, and two hook bodies 2 are arranged at intervals, and the two hook bodies 2 are rotatably mounted on the guide rod 11.

[0050] The use of two retractor bodies 2 can restrain each other and avoid excessive angular pulling of a single retractor body 2 .

[0051] The hook body 2 is designed in a right-angle arc shape, that is, the bending part of the hook body 2 is arc-shaped. The hook body 2 is bent in an arc shape, which can not only pull the blood vessel open stably, but also reduce the damage to the blood vessel, especially in the exposure and pulling of the external iliac vein and the abdominal aorta when cleaning the obturator area and the para-aortic lymph nodes, which plays a vital role.

[0052] The adjustment assembly 3 includes an adjustment rope 31, one end of the adjustment rope 31 close to the hook body 2 is connected to both sides of the two hook bodies 2, and the other end passes through the guide rod 11. When in use, the adjustment rope 31 is pulled to allow the two hook bodies 2 to unfold.

[0053] The design of the two-page retractor body 2 allows for a wider pulling and exposure range, and reduces the frequent transfer of the position of the retractor body 2 due to unclear exposure.

[0054] Reference Figure 4 In order to improve the convenience of adjusting the adjustment rope 31 on the shell 1, a rotating shaft 32 is provided on the shell 1, and a bearing 33 is provided between the rotating shaft 32 and the shell 1. The bearing 33 is connected between the shell 1 and the rotating shaft 32. When in use, the rotating shaft 32 is rotatably installed on the shell 1 through the bearing 33.

[0055] A roller 34 is provided on the rotating shaft 32, and the roller 34 is mounted on the rotating shaft 32. In addition, a rolling groove 341 is formed on the roller 34, and one end of the adjustment rope 31 is connected to the hook body 2, and the other end is wound around the rolling groove 341 of the roller 34. In addition, a first torsion spring 35 is provided between the rotating shaft 32 and the housing 1, and the first torsion spring 35 is pressed tightly between the rotating shaft 32 and the housing 1. In the process of stretching the adjustment rope 31, the first torsion spring 35 is compressed.

[0056] Reference Figure 2 When the adjustment rope 31 is released, in order to allow the two hook bodies 2 to be retracted, a second torsion spring 351 is provided between the hook body 2 and the guide rod 11, and the second torsion spring 351 is pressed tightly between the hook body 2 and the guide rod 11. When the hook body 2 is unfolded under the action of the adjustment rope 31, the second torsion spring 351 between the hook body 2 and the guide rod 11 is in a compressed state, and after the adjustment rope 31 releases the hook body 2, the hook body 2 is merged together under the action of the second torsion spring 351.

[0057] Reference Figure 4 The adjustment assembly 3 further includes a first handle 36 and a second handle 37. The first handle 36 is provided with a first rotating disk 361, and the first handle 36 and the first rotating disk 361 are integrally formed. The second handle 37 is provided with a second rotating disk 371, and the second handle 37 and the second rotating disk 371 are integrally formed. In addition, the housing 1 is connected to the second rotating disk 371. A rotating bolt 362 is provided on the first rotating disk 361, and one end of the rotating bolt 362 passes through the first rotating disk 361 and the second rotating disk 371 in sequence. A connecting nut 363 is provided on one end of the rotating bolt 362 passing through the second rotating disk 371, and the connecting nut 363 is threadedly connected to the rotating bolt 362. When in use, the first rotating disk 361 and the second rotating disk 371 are rotated by the rotating bolt 362.

[0058] The first handle 36 and the second handle 37 drive the relative rotation between the first rotating disk and the second rotating disk 371, so that the convenience of pulling the adjustment rope 31 is improved.

[0059] Reference Figure 3-Figure 4 In the process of stretching the blood vessel, in order to prevent the hook body 2 from being over-expanded and causing damage to the blood vessel, the adjustment rope 31 is divided into two sections, one end of which is connected to the hook body 2, and the other end passes through the guide rod 11. One end of the other section of the adjustment rope 31 is connected to the second turntable 371, and the other end is wound on the rolling groove 341 of the roller 34. The protective component 4 includes a first magnet 41 and a second magnet 42, and the first magnet 41 and the second magnet 42 are respectively connected to the ends of the two sections of the adjustment rope 31 that are close to each other. When in use, the first magnet 41 and the second magnet 42 are magnetically matched.

[0060] After the hook body 2 is unfolded under the action of the first handle 36 and the second handle 37, the hook body 2 is against the outer wall of the blood vessel. As the blood vessel is stretched, the operator needs to control the force applied to the first handle 36 and the second handle 37 to prevent the hook body 2 from excessively unfolding and causing damage to the blood vessel. If the force applied to the first handle 36 and the second handle 37 is large, the first magnet 41 and the second magnet 42 will separate, thereby reducing the damage caused by the hook body 2 to the blood vessel.

[0061] Reference Figure 3-Figure 4 Compared with the integrated structure of the adjusting rope 31, the adjusting rope 31 is divided into two sections, and then the adjusting rope 31 is connected by the first magnet 41 and the second magnet 42, so as to reduce the excessive pulling of the hook body 2 on the blood vessel.

[0062] Reference Figure 5 During the operation, the doctor needs to pull the blood vessel for a long time, in order to improve the convenience of the doctor to control the hook body 2. The locking assembly 5 includes a sliding sleeve 51, and the sliding sleeve 51 slides in the length direction of the first handle 36. In order to improve the stability of the sliding sleeve 51 on the first handle 36, a guide groove 52 is provided on the first handle 36, and the length direction of the guide groove 52 is the same as the sliding direction of the sliding sleeve 51. A rotating wheel 53 is rotatably installed in the guide groove 52 of the first handle 36, and two rotating wheels 53 are arranged at intervals, and the two rotating wheels 53 are embedded in the guide groove 52 of the first handle 36. A connecting bolt 531 is provided on the sliding sleeve 51, and the connecting bolt 531 corresponds to the rotating wheel 53. One end of the two connecting bolts 531 passes through the sliding sleeve 51, and the connecting bolt 531 passes through one end of the sliding sleeve 51 to connect the rotating wheel 53. When in use, the sliding sleeve 51 slides along the guide groove 52 on the first handle 36 through the two rotating wheels 53.

[0063] Furthermore, a limiting groove 54 is provided on the second handle 37, and the length direction of the limiting groove 54 is parallel to the length direction of the second handle 37. In addition, a clamping groove 541 is provided on the second handle 37, and the opening direction of the clamping groove 541 is perpendicular to the limiting groove 54, and the clamping groove 541 connects the limiting groove 54 and the outer side of the second handle 37. A limiting block 511 is integrally formed on the sliding sleeve 51. When the first handle 36 and the second handle 37 are combined, the limiting block 511 on the sliding sleeve 51 passes through the clamping groove 541 on the second handle 37, and then the sliding sleeve 51 slides along the guide groove 52 to the side away from the first rotating disk 361 and the second rotating disk 371, so that the limiting block 511 on the sliding sleeve 51 can be embedded in the limiting groove 54 of the second handle 37, thereby allowing the first handle 36 and the second handle 37 to remain in a locked state. When the surgical operation is completed, the sliding sleeve 51 is slid toward the side close to the first rotating disk 361 and the second rotating disk 371 , so that the first handle 36 and the second handle 37 are unlocked.

[0064] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A vascular retractor for laparoscopic surgery, characterized in that: include: A housing (1), on which the blood vessel retractor is integrally mounted; A retractor body (2), the retractor body (2) being rotatably mounted on the shell (1), and at least two retractor bodies (2) are arranged on the shell (1) at intervals; An adjusting component (3), the adjusting component (3) being mounted on the housing (1), and the adjusting component (3) being used to control the unfolding of the retractor body (2); A protection component (4), the protection component (4) being mounted on the housing (1), and the protection component (4) being used to protect the transitional unfolding of the retractor body (2); A locking assembly (5), wherein the locking assembly (5) is mounted on the housing (1), and the locking assembly (5) is used to keep the hook body (2) in an expanded state.

2. A vascular retractor for laparoscopic surgery according to claim 1, characterized in that: The adjustment assembly (3) comprises an adjustment rope (31); the hook body (2) is rotatably mounted on the shell (1); one end of the adjustment rope (31) is wound around the shell (1) and the other end is connected to the hook body (2).

3. The vascular retractor for laparoscopic surgery according to claim 2, characterized in that: A rotating shaft (32) is rotatably mounted on the housing (1), and the rotating shaft (32) is rotatably mounted on the housing (1). A roller (34) is mounted on the rotating shaft (32), and a rolling groove (341) is formed on the roller (34), and one end of the adjusting rope (31) is wound around the rolling groove (341).

4. The vascular retractor for laparoscopic surgery according to claim 3, characterized in that: A bearing (33) is provided between the rotating shaft (32) and the housing (1), and the bearing (33) is mounted on the rotating shaft (32). A first torsion spring (35) is provided between the rotating shaft (32) and the housing (1), and the first torsion spring (35) is pressed tightly between the rotating shaft (32) and the housing (1).

5. The vascular retractor for laparoscopic surgery according to claim 2, characterized in that: The adjustment assembly (3) further comprises a first handle (36) and a second handle (37); the first handle (36) is provided with a first turntable (361); the second handle (37) is provided with a second turntable (371); the housing (1) is mounted on the second turntable (371); a rotating bolt (362) is provided on the first turntable (361); one end of the rotating bolt (362) passes through the first turntable (361) and the second turntable (371) in sequence; one end of the rotating bolt (362) passing through the second turntable (371) is provided with a connecting nut (363); the connecting nut (363) is threadedly connected to the rotating bolt (362); one end of the adjustment rope (31) is connected to the first turntable (361).

6. The vascular retractor for laparoscopic surgery according to claim 5, characterized in that: The locking assembly (5) comprises a sliding sleeve (51), the sliding sleeve (51) is slidably mounted on the first handle (36), a limiting groove (54) is provided on the second handle (37), and a clamping groove (541) is provided on the second handle (37), the clamping groove (541) is communicated with the limiting groove (54), a limiting block (511) is provided on the sliding sleeve (51), and the limiting block (511) on the sliding sleeve (51) is clamped in the limiting groove (54) through the clamping groove (541).

7. A vascular retractor for laparoscopic surgery according to claim 6, characterized in that: The first handle (36) is provided with a guide groove (52), a rotating wheel (53) is arranged in the guide groove (52), a connecting bolt (531) is arranged on the sliding sleeve (51), and one end of the connecting bolt (531) passes through the sliding sleeve (51) and is connected to the rotating wheel (53).

8. The vascular retractor for laparoscopic surgery according to claim 2, characterized in that: A guide rod (11) is formed on the shell (1), one end of the guide rod (11) is threadedly connected to the shell (1), and the other end extends to a side away from the shell (1), and the adjustment rope (31) passes through the guide rod (11).

9. The vascular retractor for laparoscopic surgery according to claim 5, characterized in that: The protective component (4) comprises a first magnet (41) and a second magnet (42); the adjustment rope (31) on the hook body (2) is connected to the first magnet (41); the adjustment rope (31) on the first handle (36) is connected to the second magnet (42); and the first magnet (41) and the second magnet (42) are magnetically matched.

10. The vascular retractor for laparoscopic surgery according to claim 8, characterized in that: A second torsion spring (351) is provided between the hook body (2) and the guide rod (11), and the second torsion spring (351) is pressed tightly between the hook body (2) and the guide rod (11).

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