Surgical retractor

Abstract

The utility model relates to the technical field of medical instruments, in particular to a surgical retractor. The surgical retractor comprises a first retractor frame, a second retractor frame, a fixing rod and supporting blocks, the fixing rod is fixedly connected to the first retractor frame, the second retractor frame is rotatably arranged on the fixing rod, and the supporting blocks are fixedly connected to the first retractor frame and the second retractor frame. When the retractor rod needs to be replaced, the pull rod is pushed, the clamping block is separated from the supporting block and the positioning block, the supporting block and the positioning block can be rapidly separated, then a new positioning block is inserted into the supporting block, the pull rod is loosened, under the action of the elastic piece, the clamping block is clamped with the supporting block and the positioning block again, and the aim of conveniently replacing the retractor rod is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a surgical retraction device. Background Art

[0002] In the early stages of medical research, surgical operations were basically performed manually. The surgical field of view and the involvement of organs and tissues that needed to be exposed were mostly achieved by the doctor's hands or simple tools, posing a great challenge to both doctors and patients.

[0003] Retractors commonly used in surgery are mostly made of metal materials such as stainless steel and titanium alloy. They can provide great support for surgical incisions and can be repeatedly disinfected. Different surgical retractors are needed for traction operations when performing different surgical operations. However, current retractors are simple in design and have relatively single functions. The retractor rod structure is inconvenient to replace, resulting in the need to use different retractors for traction operations when different surgical operations are required.

[0004] Based on this, there is an urgent need for a surgical retractor device that is convenient for replacing the retractor head. Utility Model Content

[0005] In order to overcome the shortcomings of the current retractors, which have simple designs, relatively single functions, and inconvenient retractor rod structures to replace, resulting in the need to use different retractors for retraction operations when different surgical operations are required, the utility model provides a surgical retractor device that is easy to replace the retractor head.

[0006] A surgical retraction device includes a first retraction frame, a second retraction frame, a fixed rod and a support block. The first retraction frame is fixedly connected to the fixed rod, and the second retraction frame is rotatably arranged on the fixed rod. The first retraction frame and the second retraction frame are both fixedly connected to the support block, and also include a positioning block, a pull rod, a positioning rod, an elastic member, a clamping block, a guide block and a retraction rod. The support block is slidably provided with a positioning block, and the support block and the positioning block are both rotatably provided with clamping blocks. The two clamping blocks are rotatably engaged with the support block and the positioning block respectively, and the clamping block is provided with an arc groove. The support block and the positioning block are both fixedly connected with guide blocks, and the guide block is slidably connected to the adjacent arc grooves on the clamping block. The clamping block is fixedly connected with a pull rod, and the support block and the positioning block are both fixedly connected with positioning rods. The pull rod and the adjacent positioning rods are commonly connected with an elastic member, and the bottom of the positioning block is connected to the retraction rod.

[0007] In addition, it is particularly preferred that it also includes a limiting frame, a positioning frame, a first torsion spring, a connecting rod and a latching tooth, the second pulling frame is fixedly connected to the limiting frame on one side close to the first pulling frame, the second pulling frame is fixedly connected to the connecting rod, the positioning frame is rotatably arranged on the connecting rod, the positioning frame is fixedly connected to the one side close to the limiting frame with a latching tooth, the latching tooth is latched with the limiting frame, and the positioning frame and the second pulling frame are commonly connected to the first torsion spring.

[0008] In addition, it is particularly preferred that it also includes a first rotating shaft, a second rotating shaft, a stretching rod and a second torsion spring, the first rotating shaft is fixedly connected to the side where the first pulling apart frame and the second pulling apart frame are close to each other, the first rotating shaft is rotatably provided with a stretching rod, the ends of the two stretching rods away from the rotating shaft are rotatably connected through the second rotating shaft, and the ends of the two first stretching rods away from the first rotating shaft are commonly connected to the second torsion spring.

[0009] In addition, it is particularly preferred that a distraction plate and a fixing bolt are further included, the fixing bolt is threadedly arranged on the first rotating shaft, and the distraction plate is slidably placed on the fixing bolt.

[0010] In addition, it is particularly preferred that an annular opening is formed at one end of the first distraction frame and the second distraction frame away from the support block.

[0011] Furthermore, it is particularly preferred that the retraction rod is made of stainless steel.

[0012] Compared with the prior art, the utility model has the following advantages: 1. When the retraction rod needs to be replaced, the pull rod is pushed to disengage the clamping block from the support block and the positioning block, and the support block and the positioning block can be quickly separated, and then a new positioning block is inserted into the support block, and the pull rod is released. Under the action of the elastic member, the clamping block is re-engaged with the support block and the positioning block, thereby facilitating the replacement of the retraction rod.

[0013] 2. When the wound needs to be retracted, first pull the positioning frame forward to disengage the engaging teeth from the limiting frame, then use the retraction rod to retract the wound to a suitable width, then release the positioning frame. Under the action of the first torsion spring, the positioning frame drives the engaging teeth to rotate backward and reengage the limiting frame, so that the limiting frame cooperates with the engaging teeth to achieve the purpose of fixing the width of the wound retracted by the retraction rod, which is convenient for medical staff to perform surgical operations.

[0014] 3. When the wound is retracted, the front ends of the two spreading rods rotate around the second shaft, and the second spreading rod drives the second torsion spring to deform, thereby increasing the resistance when the medical staff opens the first and second spreading frames, preventing the wound from being torn due to excessive force applied by the medical staff when retracting the wound. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the first distraction frame, the second distraction frame and the fixing rod of the utility model.

[0017] Figure 3 The utility model is a three-dimensional cross-sectional structural schematic diagram of the pull rod, the positioning rod and the elastic member.

[0018] Figure 4 It is a three-dimensional cross-sectional structural schematic diagram of the support block, the positioning block and the clamping block of the utility model.

[0019] Figure 5 It is a three-dimensional cross-sectional structural schematic diagram of the first retraction frame, the second retraction frame and the latching teeth of the utility model.

[0020] Figure 6 It is an exploded view of the limit frame, positioning frame and latching teeth of the utility model.

[0021] Figure 7 It is a three-dimensional cross-sectional structural schematic diagram of the first rotating shaft, the second rotating shaft and the propping rod of the utility model.

[0022] Figure 8 It is a three-dimensional structural schematic diagram of the retraction plate and the fixing bolts of the utility model.

[0023] Among them, the above-mentioned drawings include the following figure marks: 1. a first pulling apart frame, 2. a second pulling apart frame, 3. a fixing rod, 4. a supporting block, 5. a positioning block, 6. a pulling rod, 7. a positioning rod, 8. an elastic member, 9. a clamping block, 10. a guide block, 11. a pulling apart rod, 12. a limiting frame, 13. a positioning frame, 1301, a first torsion spring, 1302, a connecting rod, 1303, a clamping tooth, 14. a first rotating shaft, 1401, a second rotating shaft, 15, a spreading rod, 16. a second torsion spring, 17. a pulling apart plate, 18. a fixing bolt. DETAILED DESCRIPTION

[0024] Although the present invention may be described with respect to a specific application or industry, those skilled in the art will recognize the broader applicability of the present invention. Those of ordinary skill in the art will recognize that terms such as: above, below, upward, downward, etc. are used to describe the drawings and do not represent limitations on the scope of the present invention as defined by the appended claims. Any numerical designations such as: first or second are merely exemplary and are not intended to limit the scope of the present invention in any way.

[0025] Example 1: A surgical retraction device, see Figure 1-Figure 4As shown, it includes a first distraction frame 1, a second distraction frame 2, a fixed rod 3 and a support block 4. The first distraction frame 1 is fixedly connected to the fixed rod 3 in the middle, and the second distraction frame 2 is rotatably arranged on the fixed rod 3. The first distraction frame 1 and the second distraction frame 2 are both provided with an annular opening at one end away from the support block 4. By inserting two fingers into the annular opening, it is convenient to rotate the first distraction frame 1 and the second distraction frame 2. The first distraction frame 1 and the second distraction frame 2 are both fixedly connected to the support block 4 by welding. The support block 4 is slidably provided with a positioning block 5. The support block 4 and the positioning block 5 are both rotatably arranged inside. There is a clamping block 9, which is semicircular. The two clamping blocks 9 are rotated to clamp with the supporting block 4 and the positioning block 5 respectively. The clamping block 9 is provided with an arc groove. The supporting block 4 and the positioning block 5 are fixedly connected with a guide block 10 by welding. The guide block 10 is slidably connected to the adjacent arc groove on the clamping block 9. A pull rod 6 is fixed to the clamping block 9. The supporting block 4 and the positioning block 5 are also fixedly connected with a positioning rod 7 by welding. The pull rod 6 and the adjacent positioning rod 7 are commonly connected with an elastic part 8. The bottom of the positioning block 5 is connected with a retraction rod 11. The retraction rod 11 is made of stainless steel with high strength and good corrosion resistance.

[0026] When the wound needs to be retracted, put the fingers into the annular openings of the first retraction frame 1 and the second retraction frame 2, and the rotating shaft rotates to cooperate with the first retraction frame 1 and the second retraction frame 2 to rotate, so that the support block 4 drives the positioning block 5 to move to the side away from each other, and the positioning block 5 drives the two retraction rods 11 to move to the side away from each other to stretch the wound. When the retraction rod 11 needs to be replaced, the pull rod 6 is pushed to deform the elastic member 8, and the pull rod 6 drives the clamping block 9 to rotate guided by the guide block 10, so that the clamping block 9 is disengaged from the support block 4 and the positioning block 5, and then the positioning block 5 is pulled backward to quickly separate the support block 4 from the positioning block 5, and then the new positioning block 5 is inserted into the support block 4, and the pull rod 6 is released. The elastic member 8 returns to its original state and drives the clamping block 9, the pull rod 6 and the reverse rotation to reset, so that the clamping block 9 is re-engaged with the support block 4 and the positioning block 5, so as to achieve the purpose of convenient replacement of the retraction rod 11.

[0027] Example 2: Based on Example 1, refer to Figure 5 and Figure 6 As shown, it also includes a limiting frame 12, a positioning frame 13, a first torsion spring 1301, a connecting rod 1302 and a locking tooth 1303. The limiting frame 12 is fixedly connected to the right side of the first distraction frame 1, and the connecting rod 1302 is fixedly connected to the second distraction frame 2. The positioning frame 13 is rotatably arranged on the connecting rod 1302. The rear side of the positioning frame 13 is fixedly connected to the locking tooth 1303, which is locked with the limiting frame 12. The positioning frame 13 and the second distraction frame 2 are commonly connected with the first torsion spring 1301.

[0028] When the wound needs to be retracted, first pull the positioning frame 13 forward, and the positioning frame 13 drives the latch tooth 1303 to rotate forward and disengage from the limiting frame 12, and the positioning frame 13 drives the first torsion spring 1301 to deform, and then rotate the first retraction frame 1 and the second retraction frame 2 to make the retraction rod 11 retract the wound to a suitable width, and then release the positioning frame 13, and the first torsion spring 1301 returns to its original state to make the positioning frame 13 drive the latch tooth 1303 to rotate backward and re-engage with the limiting frame 12, so that the limiting frame 12 cooperates with the latch tooth 1303, so as to achieve the purpose of fixing the width of the wound retracted by the retraction rod 11, which is convenient for medical staff to perform surgical operations.

[0029] See also Figure 7 As shown, it also includes a first rotating shaft 14, a second rotating shaft 1401, a spreading rod 15 and a second torsion spring 16. The first rotating shaft 14 is fixedly connected to the middle part of the side where the first pulling apart frame 1 and the second pulling apart frame 2 are close to each other. The spreading rod 15 is rotatably arranged on the first rotating shaft 14. The ends of the two spreading rods 15 away from the rotating shaft are rotatably connected through the second rotating shaft 1401. The ends of the two first spreading rods 15 away from the first rotating shaft 14 are commonly connected to the second torsion spring 16. The second torsion spring 16 is sleeved on the second rotating shaft 1401.

[0030] When the wound is retracted, the first retraction frame 1 and the second retraction frame 2 drive the two stretching rods 15 to open outward through the first rotating shaft 14, and the front ends of the two stretching rods 15 rotate around the second rotating shaft 1401, and the second stretching rod 15 drives the second torsion spring 16 to deform, thereby increasing the resistance when the medical staff opens the first retraction frame 1 and the second retraction frame 2, preventing the wound from being torn due to excessive force used by the medical staff when retracting the wound. After the operation is completed, the first retraction frame 1 and the second retraction frame 2 are released, and the second torsion spring 16 returns to its original state and drives the two stretching rods 15 to close inward.

[0031] See also Figure 1 and Figure 8 As shown, a distraction plate 17 and a fixing bolt 18 are also included. The fixing bolt 18 is threadedly arranged on the fixing rod 3, and the distraction plate 17 is slidably placed on the fixing bolt 18.

[0032] When the first and second retraction frames 1 and 2 drive the two retraction rods 11 to longitudinally retract the wound, the fixing bolts 18 are rotated to loosen the retraction plate 17, and then the retraction plate 17 is slid to transversely retract the wound, so that the wound is subjected to transverse force to prevent the wound from shrinking during the operation.

[0033] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation shall fall within the protection scope of the present invention.

Claims

1. A surgical retraction device, comprising a first retraction frame (1), a second retraction frame (2), a fixed rod (3) and a support block (4), wherein the first retraction frame (1) is fixedly connected to the fixed rod (3), the second retraction frame (2) is rotatably arranged on the fixed rod (3), and the first retraction frame (1) and the second retraction frame (2) are both fixedly connected to the support block (4), wherein: The invention also comprises a positioning block (5), a pull rod (6), a positioning rod (7), an elastic member (8), a clamping block (9), a guide block (10) and a pull-out rod (11). The positioning block (5) is slidably arranged on the support block (4). The clamping blocks (9) are rotatably arranged in the support block (4) and the positioning block (5). The two clamping blocks (9) are rotatably engaged with the support block (4) and the positioning block (5) respectively. The clamping block (9) is provided with an arc groove. The support block (4) and the positioning block (5) are both fixedly connected with the guide block (10). The guide block (10) is slidably connected with the adjacent arc groove on the clamping block (9). The clamping block (9) is fixedly connected with the pull rod (6). The support block (4) and the positioning block (5) are both fixedly connected with the positioning rod (7). The pull rod (6) and the adjacent positioning rod (7) are commonly connected with the elastic member (8). The bottom of the positioning block (5) is connected with the pull-out rod (11).

2. A surgical retraction device according to claim 1, characterized in that: The invention also comprises a limiting frame (12), a positioning frame (13), a first torsion spring (1301), a connecting rod (1302) and a latching tooth (1303); a side of the second pulling frame (2) close to the first pulling frame (1) is fixedly connected to the limiting frame (12); a connecting rod (1302) is fixedly connected to the second pulling frame (2); a positioning frame (13) is rotatably arranged on the connecting rod (1302); a side of the positioning frame (13) close to the limiting frame (12) is fixedly connected to a latching tooth (1303); the latching tooth (1303) is latched with the limiting frame (12); and the positioning frame (13) and the second pulling frame (2) are jointly connected to the first torsion spring (1301).

3. A surgical retraction device according to claim 1, characterized in that: It also includes a first rotating shaft (14), a second rotating shaft (1401), a spreading rod (15) and a second torsion spring (16); the first spreading frame (1) and the second spreading frame (2) are both fixedly connected to the first rotating shaft (14) on the sides close to each other; the spreading rod (15) is rotatably arranged on the first rotating shaft (14); the ends of the two spreading rods (15) away from the rotating shaft are rotatably connected via the second rotating shaft (1401); and the ends of the two first spreading rods (15) away from the first rotating shaft (14) are commonly connected to the second torsion spring (16).

4. A surgical retraction device according to claim 1, characterized in that: It also includes a distraction plate (17) and a fixing bolt (18); the fixing bolt (18) is threadedly arranged on the first rotating shaft (14), and the distraction plate (17) is slidably placed on the fixing bolt (18).

5. A surgical retraction device according to claim 1, characterized in that: An annular opening is provided at one end of the first retraction frame (1) and the second retraction frame (2) away from the support block (4).

6. A surgical retraction device according to claim 1, characterized in that: The pull-off rod (11) is made of stainless steel.

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