An automatic retractor with adjustable pulling force for laparoscopic puncture channel

Abstract

The present invention provides an automatic retractor with adjustable pulling force for a laparoscopic puncture channel, including a straight-line support bar, an arc-shaped support piece with adjustable opening and closing angles is installed on one side of the support bar through a fixing mechanism, and the mounting parts provided at both ends of the inner side of the arc-shaped support piece are both installed with a retractor mounting mechanism, and the retractor mounting mechanism is installed with retractors of different specifications that can be selected according to the thickness of the patient's subcutaneous fat. The present invention matches the support bar with a rigid structure with the arc-shaped support piece with a flexible structure, and the two can be quickly fixed by a fixing mechanism, and the opening and closing degree of the arc-shaped support piece can be flexibly adjusted by the fixing mechanism, so that the retractor can be suitable for suturing different minimally invasive surgical wounds. At the same time, medical staff can independently perform the wound suturing operation without the need for an assistant, and reduce the difficulty of suturing the deep muscle fascia of the puncture channel, which is better suitable for laparoscopic puncture minimally invasive surgical treatment.

Description

Technical Field

[0001] The invention belongs to the field of medical instruments, and in particular relates to an automatic retractor with adjustable pulling force for a laparoscopic puncture channel. Background Art

[0002] With the improvement of medical technology, minimally invasive surgery has developed rapidly. Minimally invasive surgery requires small surgical incisions, short operation time, and less soft tissue damage, so that patients can recover as soon as possible.

[0003] Currently, minimally invasive surgery accounts for 90% of urological surgeries, among which urological tumor surgeries are mostly performed using laparoscopy or robotic surgery, and the common specifications of the puncture channel, namely TROCAR, are: 5mm, 8mm or 12mm. After the operation is completed, when suturing the deep muscle fascia of the puncture channel, the assistant needs to use retractors to pull it outward with both hands, and it takes multiple medical staff to cooperate to complete the suturing operation, which increases the difficulty of suturing. In addition, too many people in a crowded operating room will also increase the duration of the operation. If the patient is obese, it will take longer, which also increases the risk of the operation to a certain extent. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic retractor with adjustable pulling force for a laparoscopic puncture channel, aiming to solve the problem in the prior art that when suturing the deep muscle fascia of the puncture channel, an assistant needs to use both hands of the retractor to pull it outward, and multiple medical staff need to cooperate to complete the suturing operation. In addition, the traditional retractor cannot be used for patients of different body shapes, which increases the difficulty of suturing.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic retractor with adjustable pulling force for a laparoscopic puncture channel, comprising a straight-line support bar, one side of the support bar is equipped with an arc-shaped support piece with an adjustable opening and closing angle through a fixing mechanism, and mounting portions at both ends of the inner side of the arc-shaped support piece are equipped with retractor mounting mechanisms, and the retractor mounting mechanism is equipped with retractors of different specifications that can be selected according to the thickness of the patient's subcutaneous fat.

[0006] As a preferred solution of the present invention: two first adjustment grooves are symmetrically opened in the middle of the support bar, and two first adjustment grooves are fixedly connected by two first rivets passing through the support bar and the opening opened in the middle of the arc-shaped support piece.

[0007] As a preferred solution of the present invention: a second adjustment groove opposite to the first adjustment groove is formed in the middle of the arc-shaped support piece, and a limiting groove for preventing the fixing mechanism from falling off is formed on one side wall of the second adjustment groove.

[0008] As a preferred solution of the present invention: the fixing mechanism includes a screw rod which is interlaced with the first adjusting groove and the second adjusting groove, one end of the screw rod is fixedly connected with a sliding member which slides with the limiting groove, and the other end of the screw rod is threadedly connected with a butterfly nut.

[0009] As a preferred solution of the present invention: the hook installation mechanism includes a hook, and a second rivet with a cap head is fixedly installed on one side of the hook, the cap head of the second rivet is interlaced and connected with a special-shaped fixing hole opened on the surface of the L-shaped hook base, and one end of the L-shaped hook base is rotatably connected to the arc-shaped support piece through a third rivet passing through the installation part, and the rotation range is 0-180°.

[0010] As a preferred solution of the present invention: a surface of one side of the support bar is engraved with scale marks in millimeters.

[0011] As a preferred solution of the present invention: the special-shaped fixing hole is in the shape of a keyhole, the diameter of the circular hole at one end of the special-shaped fixing hole is larger than the diameter of the second rivet cap head, and the width of the square hole at one end of the special-shaped fixing hole is larger than the diameter of the nail rod of the second rivet.

[0012] As a preferred solution of the present invention: a gasket sleeved on the outside of the screw is provided between the butterfly nut and the support bar, and the diameter of the gasket is larger than the nut diameter of the butterfly nut.

[0013] As a preferred solution of the present invention: the support bar is made of medical 316L fine steel, and the arc-shaped support piece is made of 304 medical stainless steel.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1) The rigid structure of the support bar and the flexible structure of the arc-shaped support piece are matched, and the two can be quickly fixed by a fixing mechanism. The opening and closing degree of the arc-shaped support piece can also be flexibly adjusted by the fixing mechanism, so that the retractor can be used for suturing different minimally invasive surgical wounds. At the same time, medical staff can perform wound suturing operations independently without assistants, and reduce the difficulty of suturing deep muscle fascia in the puncture channel, which is more suitable for laparoscopic puncture minimally invasive surgical treatment;

[0016] 2) The L-shaped retractor base is rotatably connected to the end of the arc-shaped support piece through a third rivet, so that the retractor installed with the L-shaped retractor base can be rotated at multiple angles to adjust the depth of the retractor inserted into the wound, thereby improving the shortcomings of existing medical retractors and better meeting the requirements of surgeons.

[0017] 3) The L-shaped retractor base has a special-shaped fixing hole (a keyhole on the side of the outer circle) to ensure that the retractor will not fall off when pulling the wound. At the same time, the second rivet installed on the retractor can be quickly disassembled and assembled with the L-shaped retractor base. The retractor is automatically pulled during use, and the depth of the retractor can be changed according to the thickness of the patient's subcutaneous fat, which can adapt to patients of different body shapes, fat or thin, and further ensure that it meets the requirements of the surgeon. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 This is one of the structural schematic diagrams of the present invention;

[0021] Figure 3 It is a schematic diagram of the brace structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the arc-shaped support sheet structure of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the fixing mechanism of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the hook installation mechanism of the present invention.

[0025] In the figure: 1. support bar; 11. first adjustment slot; 12. scale mark; 2. arc-shaped support piece; 21. second adjustment slot; 211. limit slot; 22. mounting portion; 23. opening; 3. first rivet; 4. fixing mechanism; 41. screw; 42. gasket; 43. butterfly nut; 44. sliding member; 5. hook mounting mechanism; 51. hook; 52. second rivet; 53. L-shaped hook base; 531. special-shaped fixing hole; 54. third rivet. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example 1

[0028] See also Figure 1-6The present invention provides the following technical solutions: an automatic retractor with adjustable pulling force for a laparoscopic puncture channel, comprising a straight-line support bar 1, an arc-shaped support piece 2 with an adjustable opening and closing angle is installed on one side of the support bar 1 through a fixing mechanism 4, and the installation parts 22 provided at both ends of the inner side of the arc-shaped support piece 2 are both installed with a retractor installation mechanism 5, and the retractor installation mechanism 5 is installed with retractors 51 of different specifications that can be selected according to the thickness of the patient's subcutaneous fat.

[0029] Furthermore, two first adjustment grooves 11 are symmetrically opened in the middle of the support bar 1, and the two first adjustment grooves 11 are fixedly connected by two first rivets 3 that pass through the opening 23 opened in the middle of the support bar 1 and the arc-shaped support piece 2. The two first rivets 3 are used to realize the installation and fixation of the middle part of the arc-shaped support piece 2 and the support bar 1, and the two ends of the arc-shaped support piece 2 can undergo a certain elastic deformation.

[0030] Furthermore, a second adjustment groove 21 opposite to the first adjustment groove 11 is provided in the middle of the arc-shaped support piece 2, and a limiting groove 211 is provided on one side wall of the second adjustment groove 21 to prevent the fixing mechanism 4 from falling off. The fixing mechanism 4 cooperates with the first adjustment groove 11 and the second adjustment groove 21 to adjust the degree of opening and closing of the arc-shaped support piece 2 on one side of the support bar 1.

[0031] Furthermore, the fixing mechanism 4 includes a screw 41 which is interlaced with the first adjustment groove 11 and the second adjustment groove 21, one end of the screw 41 is fixedly connected to a sliding member 44 which slides with the limiting groove 211, and the other end of the screw 41 is threadedly connected to a butterfly nut 43. By rotating the butterfly nut 43, the fixation of the screw 41 to the first adjustment groove 11 and the second adjustment groove 21 is adjusted.

[0032] Furthermore, the hook installation mechanism 5 includes a hook 51, and a second rivet 52 with a cap is fixedly installed on one side of the hook 51. The cap of the second rivet 52 is interlaced and connected with the special-shaped fixing hole 531 opened on the surface of the L-shaped hook base 53. One end of the L-shaped hook base 53 passes through the mounting portion 22 through the third rivet 54 and is rotatably connected to the arc-shaped support plate 2. The rotation range is 0-180°. The second rivet 52 is interlaced and matched with the special-shaped fixing hole 531 to quickly realize the disassembly and assembly of the hook 51 and the L-shaped hook base 53. The L-shaped hook base 53 drives the hook 51 to rotate 0-180° around the third rivet 54 as the axis to adjust the insertion depth of the hook 51 into the wound and the tightening angle.

[0033] Furthermore, a scale mark 12 in millimeters is engraved on one side surface of the support bar 1 , and the distance between the two screw rods 41 can be quickly determined based on the scale mark 12 , and then the opening and closing degree of the arc-shaped support piece 2 can be quickly determined.

[0034] Furthermore, the special-shaped fixing hole 531 is in the shape of a keyhole, and the diameter of the circular hole at one end of the special-shaped fixing hole 531 is larger than the diameter of the cap head of the second rivet 52, and the width of the square hole at one end of the special-shaped fixing hole 531 is larger than the diameter of the nail rod of the second rivet 52. When the hook 51 tightens the wound, the nail rod of the second rivet 52 is placed in the square hole of the special-shaped fixing hole 531, and under the action of the cap head of the second rivet 52, the hook 51 is prevented from being separated from the L-shaped hook base 53. Since the diameter of the circular hole of the special-shaped fixing hole 531 is larger than the diameter of the cap head of the second rivet 52, the hook 51 and the L-shaped hook base 53 can be quickly disassembled and assembled.

[0035] Furthermore, a gasket 42 is provided between the butterfly nut 43 and the support bar 1 and is sleeved on the outside of the screw rod 41. The diameter of the gasket 42 is larger than the nut diameter of the butterfly nut 43. The gasket 42 allows the butterfly nut 43 to be better fixed to the support bar 1 when being tightened.

[0036] Furthermore, the support bar 1 is made of medical 316L fine steel, and the arc-shaped support piece 2 is made of 304 medical stainless steel, so that the automatic retractor can be reused after disinfection and sterilization.

[0037] Specifically, after the patient undergoes urinary laparoscopic interposition minimally invasive surgery, when the deep muscle fascia of the puncture channel needs to be sutured, two retractors 51 are placed in the wound, and the automatic retractors can be flexibly used according to the TROCAR specifications (5mm, 8mm or 12mm). By rotating the two butterfly nuts 43, the tightness between the arc-shaped support sheet 2 and the support bar 1 is loosened, and then according to the specific TROCAR specifications, the screw 41 is made to slide in the first adjustment groove 11 and the second adjustment groove 21, and the sliding member 44 at the end of the screw 41 is guided and slid in the limit groove 211. The two screw rods 41 slide relative to each other to open the arc-shaped support piece 2, and then the butterfly nut 43 is tightened to fix the arc-shaped support piece 2 and the support bar 1, so that the distance between the hooks 51 at both ends of the arc-shaped support piece 2 can be increased and adjusted. The two screw rods 41 slide toward each other to tighten the arc-shaped support piece 2, and then the butterfly nut 43 is tightened to fix the arc-shaped support piece 2 and the support bar 1, so that the distance between the hooks 51 at both ends of the arc-shaped support piece 2 can be reduced and adjusted. The size of the distance adjustment between the two screw rods 41 can be quickly judged according to the scale mark 12, thereby realizing flexible adjustment of the hook 51 during the wound suturing process.

[0038] During the wound suturing process, the L-shaped retractor base 53 can drive the retractor 51 to rotate 0-180° around the third rivet 54 as the axis, so as to adjust the insertion depth of the retractor 51 into the wound and the tightening angle to better meet the surgeon's requirements. Moreover, since the retractor 51 is inserted into the special-shaped fixing hole 531 through the second rivet 52 and connected to the L-shaped retractor base 53, when the two retractors 51 tighten the wound, the retractor 51 automatically pulls and tightens, and the nail rod of the second rivet 52 slides into the square hole at one end of the special-shaped fixing hole 531. Since the diameter of the cap head of the second rivet 52 is larger than the width of the square hole, the retractor 51 will not be detached from the L-shaped retractor base 53.

[0039] As patients have different body shapes, retractors 51 of different specifications can be replaced. When replacing the retractor 51, it is only necessary to slide the cap of the second rivet 52 into the circular hole of the special-shaped fixing hole 531 and pull it downwards, thereby quickly realizing the disassembly and assembly of the retractor 51 and the L-shaped retractor base 53, further ensuring compliance with the surgeon's requirements.

[0040] It should also be noted that: since the automatic retractor can be made of medical steel material, the automatic retractor can be reused after being disinfected and sterilized after surgery, thereby reducing the loss of medical equipment.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic retractor with adjustable tension for a laparoscopic puncture channel, comprising a straight-line support bar (1), characterized in that: An arc-shaped support piece (2) with an adjustable opening and closing angle is installed on one side of the support bar (1) through a fixing mechanism (4), and the mounting parts (22) provided at both ends of the inner side of the arc-shaped support piece (2) are both installed with a retractor mounting mechanism (5), and the retractor mounting mechanism (5) is installed with retractors of different specifications that can be selected according to the thickness of the patient's subcutaneous fat; Two first adjustment grooves (11) are symmetrically provided in the middle of the support bar (1), and two first adjustment grooves (11) are fixedly connected to each other through two first rivets (3) passing through the support bar (1) and fixedly connected to an opening (23) provided in the middle of the arc-shaped support piece (2); A second adjustment groove (21) opposite to the first adjustment groove (11) is provided in the middle of the arc-shaped support piece (2), and a limiting groove (211) for preventing the fixing mechanism (4) from falling off is provided on a groove wall on one side of the second adjustment groove (21); The fixing mechanism (4) comprises a screw rod (41) which is inserted and connected with the first adjusting groove (11) and the second adjusting groove (21); one end of the screw rod (41) is fixedly connected with a sliding member (44) which slides with the limiting groove (211); and the other end of the screw rod (41) is threadedly connected with a butterfly nut (43); The hook installation mechanism (5) comprises a hook (51), a second rivet (52) with a cap is fixedly installed on one side of the hook (51), the cap of the second rivet (52) is inserted and connected with a special-shaped fixing hole (531) opened on the surface of the L-shaped hook base (53), and one end of the L-shaped hook base (53) passes through the installation part (22) through a third rivet (54) and is rotatably connected to the arc-shaped support plate (2), and the rotation range is 0-180°; One side surface of the support bar (1) is engraved with a scale mark (12) in millimeters.

2. The automatic retractor with adjustable pulling force for laparoscopic puncture channel according to claim 1, characterized in that: The special-shaped fixing hole (531) is in the shape of a keyhole, the diameter of the circular hole at one end of the special-shaped fixing hole (531) is larger than the diameter of the cap head of the second rivet (52), and the width of the square hole at one end of the special-shaped fixing hole (531) is larger than the diameter of the nail rod of the second rivet (52).

3. The automatic retractor with adjustable tension for laparoscopic puncture channel according to claim 1, characterized in that: A gasket (42) sleeved on the outside of the screw rod (41) is provided between the butterfly nut (43) and the support bar (1), and the diameter of the gasket (42) is larger than the nut diameter of the butterfly nut (43).

4. The automatic retractor with adjustable pulling force for laparoscopic puncture channel according to claim 1, characterized in that: The support bar (1) is made of medical 316L fine steel, and the arc-shaped support piece (2) is made of 304 medical stainless steel.

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