Surgical retractor

Abstract

The invention belongs to the technical field of surgical operation tools, and particularly relates to a surgical operation retractor which comprises a balance weight stand column and two base assemblies, a vertical sliding groove is formed in the right side of the balance weight stand column, an adjusting screw rod is installed on the inner side of the middle of the vertical sliding groove, the adjusting screw rod is connected with the balance weight stand column through a bearing, and the number of the base assemblies is two. The two base assemblies are connected through a scissor-fork type telescopic rod, an outer ring is fixedly connected to the side, away from the scissor-fork type telescopic rod, of the base assembly on the right side, an inner ring is installed on the inner side of the outer ring through a bearing, retracting assemblies are symmetrically arranged on the inner side of the inner ring, and a first positioning hole is formed in the outer edge of the outer ring. Third positioning bolts are connected into the first positioning holes in a threaded mode, and two second positioning holes are formed in the outer edge of the bottom of the inner ring. The positions of the two retracting assemblies can be conveniently and rapidly adjusted, and the retractor is conveniently suitable for retracting incisions in different directions.

Description

Technical Field

[0001] The invention belongs to the technical field of surgical tools, and in particular relates to a surgical retractor. Background Art

[0002] Surgery is commonly known as surgery, which refers to the process of entering the human body or other biological tissues through surgical equipment or instruments, operated by surgeons or other professionals, to remove lesions, change structures or implant foreign objects by external force. During the surgical operation, a retractor is needed to open the skin incision.

[0003] In a Chinese patent with the publication number CN218009812U, a retractor for neurosurgery is disclosed. By setting a flip sleeve, the angle of the longitudinal adjustment plate can be tilted, which is convenient for adjustment according to the patient's body position and the position of the wound. By rotating the positive and negative threaded screws, the two adjustment sliders move away from each other, driving the retractor plate and the retractor claws to move away from each other, thereby achieving the purpose of retracting the wound site and facilitating the doctor's operation.

[0004] After searching and combining with practical experience, it is found that the above retractors still have inconveniences in practical application. First, the lateral position adjustable range of the retractor claws is small, and it is not convenient to adjust the position of the retractor claws according to the actual direction of the patient's skin incision, which affects the use and operation. Therefore, it is urgent to improve the existing surgical retractors and provide a surgical retractor. Summary of the invention

[0005] The purpose of the present invention is to provide a surgical retractor with reasonable design, simple structure, larger adjustment range and convenient adjustment of the angle of the retractor according to the incision direction, so as to solve the problems existing in the prior art.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A surgical retractor comprises a counterweight column and a base assembly, wherein a vertical slide groove is provided inside the right side of the counterweight column, an adjusting screw is installed on the inner side of the middle part of the vertical slide groove, and the adjusting screw is connected to the bearing of the counterweight column. There are two groups of base assemblies in total, and the two groups of base assemblies are connected by a scissor-type telescopic rod. An outer ring is fixedly connected to the side of the right side base assembly facing away from the scissor-type telescopic rod, an inner ring is installed on the inner bearing of the outer ring, and a retraction assembly is symmetrically provided on the inner side of the inner ring, a first positioning hole is provided inside the outer edge of the outer ring, a third positioning bolt is threadedly connected to the first positioning hole, and two second positioning holes are provided on the outer edge of the bottom of the inner ring.

[0008] As a preferred embodiment, the two groups of base assemblies are arranged symmetrically about the scissor-type telescopic rod, and the scissor-type telescopic rod is made of steel.

[0009] As a preferred embodiment, the base assembly includes a mounting base, a limit rod, a movable block and a first positioning bolt. A limit rod is fixedly provided on the front end of the mounting base close to the side of the scissors-type telescopic rod, and a movable block is provided on the outer sliding sleeve of the limit rod. The movable block and the mounting base are fitted and slid on their adjacent sides, and a first positioning bolt is threadedly installed on the middle part of the top end of the movable block.

[0010] As a preferred embodiment, a protrusion is provided on the left side wall of the middle part of the mounting base on the left side, and the protrusion is slidably engaged in the vertical slide groove and threadedly sleeved on the outside of the adjusting screw, and the mounting base on the right side is welded and fixed to the outer ring.

[0011] As a preferred embodiment, the front and rear sides of the left end of the scissor-type telescopic rod are respectively hinged to the left movable block and the mounting base, and the front and rear sides of the right end of the scissor-type telescopic rod are respectively hinged to the right movable block and the mounting base.

[0012] As a preferred embodiment, the retraction assembly includes a pulling rod, a fixed block and a second positioning bolt. The longitudinal section of the pulling rod is an inverted "L" shape. The outer sliding sleeve of the horizontal section of the pulling rod is provided with a fixed block. The fixed block is embedded and fixedly installed on the top of the inner ring. The second positioning bolt is threadedly installed in the middle of the top end of the fixed block.

[0013] As a preferred embodiment, the diameters of the first positioning hole and the second positioning hole are equal, and the first positioning hole and the two second positioning holes are located on the same circular trajectory, and the center of the circular trajectory coincides with the center of the outer ring and the inner ring.

[0014] As a preferred implementation, the angle between the straight line formed by the two second positioning holes and the center of the inner ring is 90°.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In the scheme of the present invention:

[0017] By manually rotating the adjusting screw, the two groups of base components and the scissor-type telescopic rod can be controlled to synchronously lift and slide along the vertical slide groove stably. The adjusting screw is a trapezoidal screw rod with a self-locking function, which can ensure the stability of the height adjustment of the base component. By using the setting of the scissor-type telescopic rod, the distance between the two groups of base components can have a larger adjustment range. After the distance adjustment is completed, the first positioning bolt is tightened to facilitate the positioning of the movable block, thereby ensuring the stable working state of the retractor.

[0018] By adjusting the distance between the left and right traction rods, the patient's skin incision can be retracted to facilitate the operation. According to the actual direction of the patient's skin incision, the third positioning bolt can be rotated to move up and disengage from the second positioning hole, so that the positioning of the inner ring can be released. At this time, the inner ring can be controlled to drive the two groups of retraction components to rotate 90°, and then the third positioning bolt can be rotated in the opposite direction to move it down and insert it into the other second positioning hole. The inner ring can be positioned again, which is convenient for quick adjustment of the positions of the two groups of retraction components, which is convenient for retraction of incisions in different directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. The following description is made with respect to the drawings:

[0020] Figure 1 It is a schematic diagram of the three-dimensional front view structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the three-dimensional rear view structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the overall front view structure of the base assembly of the present invention;

[0023] Figure 4 It is a bottom view structural schematic diagram of the inner ring and the second positioning hole of the present invention;

[0024] Figure 5 It is a schematic diagram of the overall front view structure of the retraction assembly of the present invention.

[0025] In the figure:

[0026] 1. Counterweight column; 2. Vertical slide; 3. Adjusting screw; 4. Base assembly; 41. Mounting base; 42. Limit rod; 43. Movable block; 44. First positioning bolt; 5. Scissor-type telescopic rod; 6. Outer ring; 7. Inner ring; 8. Pull-out assembly; 81. Pull rod; 82. Fixed block; 83. Second positioning bolt; 9. First positioning hole; 10. Third positioning bolt; 11. Second positioning hole. DETAILED DESCRIPTION

[0027] The embodiments described below are only some of the embodiments of the present invention and do not represent all the embodiments consistent with the present invention. Now, in conjunction with the accompanying drawings, the exemplary embodiments are described as follows:

[0028] like Figure 1-5As shown, the surgical retractor of the present invention includes a counterweight column 1 and a base assembly 4, a vertical slide groove 2 is opened inside the right side of the counterweight column 1, an adjusting screw 3 is installed on the inner side of the middle part of the vertical slide groove 2, the adjusting screw 3 is connected to the bearing of the counterweight column 1, and there are two groups of base assemblies 4, and the two groups of base assemblies 4 are connected by a scissor-type telescopic rod 5, an outer ring 6 is fixedly connected to the side of the right base assembly 4 away from the scissor-type telescopic rod 5, an inner ring 7 is installed on the inner side bearing of the outer ring 6, and a retraction assembly 8 is symmetrically provided on the inner side of the inner ring 7, a first positioning hole 9 is opened inside the outer edge of the outer ring 6, a third positioning bolt 10 is connected to the inner thread of the first positioning hole 9, and two second positioning holes 11 are opened on the outer edge of the bottom of the inner ring 7.

[0029] On the basis of the above structure, the two groups of base components 4 are arranged symmetrically about the scissor-type telescopic rod 5, and the scissor-type telescopic rod 5 is made of steel.

[0030] In this embodiment, by using the scissor-type telescopic rod 5, the distance between the two groups of base components 4 can have a larger adjustment range.

[0031] On the basis of the above structure, the base assembly 4 includes a mounting base 41, a limiting rod 42, a movable block 43 and a first positioning bolt 44. A limiting rod 42 is fixedly provided on the front end of the mounting base 41 close to the side of the scissors-type telescopic rod 5, and a movable block 43 is provided on the outer sliding sleeve of the limiting rod 42. The movable block 43 and the mounting base 41 are fitted and slid on their adjacent sides, and a first positioning bolt 44 is threadedly installed on the middle part of the top end of the movable block 43.

[0032] In this embodiment, the setting of the limiting rod 42 can improve the sliding stability of the movable block 43, and after the adjustment is completed, by tightening the first positioning bolt 44, the movable block 43 is conveniently positioned to ensure the stable working state of the retractor.

[0033] Based on the above structure, a protrusion is provided on the middle left wall of the left mounting base 41, and the protrusion is engaged and slidably located in the vertical slide groove 2 and is threadedly sleeved on the outside of the adjusting screw 3, and the right mounting base 41 is welded and fixed to the outer ring 6.

[0034] In this embodiment, by rotating the adjusting screw 3, it is convenient to control the two groups of base components 4 and the scissor-type telescopic rods 5 to synchronously and stably lift and slide along the vertical slide groove 2, so as to adjust the height of the retractor according to actual needs.

[0035] Based on the above structure, the front and rear sides of the left end of the scissor-type telescopic rod 5 are respectively hinged to the left movable block 43 and the mounting base 41, and the front and rear sides of the right end of the scissor-type telescopic rod 5 are respectively hinged to the right movable block 43 and the mounting base 41.

[0036] In this embodiment, the distance between the two groups of base components 4 can be adjusted conveniently by using the scissor-type telescopic rod 5, so that the position of the retraction component 8 can be adjusted conveniently as needed.

[0037] On the basis of the above structure, the retraction assembly 8 includes a pulling rod 81, a fixed block 82 and a second positioning bolt 83. The longitudinal section of the pulling rod 81 is an inverted "L" shape. The outer sliding sleeve of the horizontal section of the pulling rod 81 is provided with a fixed block 82. The fixed block 82 is embedded and fixedly installed on the top of the inner ring 7. The second positioning bolt 83 is threadedly installed in the middle of the top end of the fixed block 82.

[0038] In this embodiment, by adjusting the distance between the left and right pulling rods 81 , it is convenient to retract the patient's skin incision and facilitate the operation, and the second positioning bolt 83 is provided to facilitate the positioning of the pulling rod 81 .

[0039] Based on the above structure, the diameters of the first positioning hole 9 and the second positioning hole 11 are equal, and the first positioning hole 9 and the two second positioning holes 11 are located on the same circular trajectory, and the center of the circular trajectory coincides with the center of the outer ring 6 and the inner ring 7.

[0040] Based on the above structure, the angle between the straight line formed by the two second positioning holes 11 and the center of the inner ring 7 is 90°.

[0041] In this embodiment, the first positioning hole 9 and the two second positioning holes 11 are provided to facilitate quick adjustment and positioning of the positions of the two retractor assemblies 8, so as to facilitate retracting incisions in different directions and facilitate the operation.

[0042] The working principle of the present invention is as follows:

[0043] When in use, first, the counterweight column 1 is fixedly installed at the designated position, and the distance between the two groups of base components 4 is adjusted as needed by using the scissor-type telescopic rod 5, so that the two groups of retractor components 8 are located above the patient's skin incision, and after the distance adjustment is completed, the first positioning bolt 44 is tightened to facilitate the positioning of the movable block 43 to ensure the stable working state of the retractor, and then the adjusting screw 3 is manually rotated to control the two groups of base components 4, the scissor-type telescopic rod 5 and the retractor component 8 to synchronously move down along the vertical slide 2 stably, so that the bottom of the vertical sections of the left and right pulling rods 81 are extended into the incision;

[0044] By adjusting the distance between the left and right traction rods 81, the skin incision of the patient can be retracted to facilitate the operation. By tightening the second positioning bolt 83 above the fixing block 82, the traction rod 81 can be positioned to ensure stable retraction of the skin incision of the patient.

[0045] When in use, the third positioning bolt 10 can be rotated according to the actual direction of the patient's skin incision to move it upward and disengage it from the second positioning hole 11, so that the positioning of the inner ring 7 can be released. At this time, the inner ring 7 can be controlled to drive the two groups of retracting components 8 to rotate 90°, and then the third positioning bolt 10 can be rotated in the opposite direction to move it downward and insert it into the other second positioning hole 11, so that the inner ring 7 can be positioned again, which is convenient for quickly adjusting the positions of the two groups of retracting components 8, and convenient for stable retraction of incisions in different directions;

[0046] It should be particularly noted that the adjusting screw 3 is a trapezoidal screw with a self-locking function, and the scissor-type telescopic rod 5 is an existing mature product and is directly cited in this case, so it will not be described in detail.

[0047] The above are only preferred specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any equivalent changes, modifications, substitutions and variations made by technicians in this technical field based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A surgical retractor, comprising a weighted column (1) and a base assembly (4), characterized in that: A vertical slide groove (2) is provided inside the right side of the counterweight column (1), an adjusting screw (3) is installed on the inner side of the middle part of the vertical slide groove (2), and the adjusting screw (3) is connected to the bearing of the counterweight column (1). The base assembly (4) is provided with two groups, and the two groups of the base assembly (4) are connected by a scissor-type telescopic rod (5). An outer ring (6) is fixedly connected to the side of the right side base assembly (4) away from the scissor-type telescopic rod (5), an inner ring (7) is installed on the inner side bearing of the outer ring (6), and a retraction assembly (8) is symmetrically provided on the inner side of the inner ring (7). A first positioning hole (9) is provided inside the outer edge of the outer ring (6), and a third positioning bolt (10) is connected to the inner thread of the first positioning hole (9), and two second positioning holes (11) are provided on the outer edge of the bottom of the inner ring (7).

2. A surgical retractor according to claim 1, characterized in that: The two groups of base components (4) are arranged symmetrically with respect to the scissor-type telescopic rod (5), and the scissor-type telescopic rod (5) is made of steel.

3. A surgical retractor according to claim 2, characterized in that: The base assembly (4) comprises a mounting base (41), a limiting rod (42), a movable block (43) and a first positioning bolt (44); a limiting rod (42) is fixedly provided on a side of the front end of the mounting base (41) close to the scissor-type telescopic rod (5); a movable block (43) is provided on an outer sliding sleeve of the limiting rod (42); the movable block (43) and the mounting base (41) are fitted and slid on a side close to each other; and a first positioning bolt (44) is threadedly installed on the middle part of the top end of the movable block (43).

4. A surgical retractor according to claim 3, characterized in that: A protrusion is provided on the left side wall of the middle part of the mounting base (41) on the left side. The protrusion is slidably engaged in the vertical slide groove (2) and is threadedly sleeved on the outer side of the adjusting screw (3). The mounting base (41) on the right side is fixed to the outer ring (6) by welding.

5. A surgical retractor according to claim 4, characterized in that: The front and rear sides of the left end of the scissor-type telescopic rod (5) are respectively hinged to the left movable block (43) and the mounting base (41), and the front and rear sides of the right end of the scissor-type telescopic rod (5) are respectively hinged to the right movable block (43) and the mounting base (41).

6. A surgical retractor according to claim 1, characterized in that: The retraction assembly (8) comprises a pulling rod (81), a fixing block (82) and a second positioning bolt (83). The longitudinal section of the pulling rod (81) is an inverted "L" shape. The fixing block (82) is provided on the outer sliding sleeve of the horizontal section of the pulling rod (81). The fixing block (82) is embedded and fixedly installed on the top of the inner ring (7). The second positioning bolt (83) is threadedly installed in the middle of the top end of the fixing block (82).

7. A surgical retractor according to claim 1, characterized in that: The diameters of the first positioning hole (9) and the second positioning hole (11) are equal, and the first positioning hole (9) and the two second positioning holes (11) are located on the same circular trajectory, the center of which coincides with the center of the outer ring (6) and the inner ring (7).

8. A surgical retractor according to claim 7, characterized in that: The included angle between the two second positioning holes (11) and the center of the inner ring (7) is 90°.

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