Surgical retractor

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a surgical retractor. The retractor comprises a retractor body, a first catheter, a second catheter and a distraction mechanism, an operation base of the retractor body is formed by a handheld part and a pulling part, and the handheld part is provided with a reverse hook conforming to human engineering. The first conduit is provided with light-guide fibers, the front ends are flush, and the light-guide fibers are protected by hard materials for stable illumination; the second catheter is connected with a negative pressure suction structure, and waste liquid is cleaned to keep the surgical field clean. The distraction mechanism is ingenious, the rotating shaft and the shaft seat enable the distraction piece to rotate flexibly, the torsional spring drives the distraction piece to expand outwards to distraction tissue, and the control piece can be folded as required; and the flexible part is used for protecting the front end of the catheter. And the front end of the opening piece is advanced and is treated with the mirror surface on the upper side of the pulling part to help illumination and reduce friction. The retractor is unique in design, integrates multiple functions, optimizes the operation process, relieves the medical care burden, is expected to be widely applied, and promotes the industry development.

Description

Technical Field

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

[0002] In modern surgery, surgical retractors, as a basic and key medical device, are widely used in various surgical fields to retract tissues and expose the surgical field. The quality of their performance directly affects the efficiency and quality of the surgery and the patient's prognosis.

[0003] The structure of traditional surgical retractors is relatively simple, mostly consisting of only the basic retractor part, and has a single function. Taking breast surgery as an example, when performing breast tumor resection, breast cancer radical surgery and other operations, the anatomical structure of the surgical area is complex, and the surrounding area is full of blood vessels, nerves and various breast tissues. When the traditional surgical retractor pulls the tissue, when the tissue on the opposite side of the pulling direction is squeezed due to surgical operations and other factors, the traditional retractor has no corresponding response mechanism and can only passively bear it, which will block the surgical field of view, forcing the doctor to frequently stop the operation to adjust the retractor position or manually push the tissue away, seriously affecting the smoothness of the operation. Therefore, it is necessary to improve the surgical retractor to improve its functionality and practicality. Summary of the invention

[0004] The present invention aims to provide a surgical retractor, which solves the problem that traditional retractors easily block the surgical field of view and have a single function by providing a distraction mechanism, lighting and a negative pressure suction structure, thereby improving surgical accuracy, fluency, safety and patient comfort.

[0005] To achieve the above object, a technical solution adopted by the present invention is:

[0006] A surgical retractor comprises a retractor body, a first catheter, a second catheter and a spreading mechanism, wherein the retractor body comprises a hand-held portion and a pulling portion connected to the upper end of the hand-held portion and extending forward, the first catheter and the second catheter are arranged at left and right intervals on the outside of the retractor body, and the spreading mechanism comprises a spreading member rotatably connected to the outside of the pulling portion, an elastic member driving the spreading member to expand outward relative to the pulling portion, and a control member for controlling the spreading member to overcome the elastic force of the elastic member and fold inward relative to the pulling portion.

[0007] Furthermore, a rotating shaft located outside the pulling portion is fixedly connected between the first conduit and the second conduit, and a shaft seat sleeved on the outside of the rotating shaft is provided on the lower side of the expansion member.

[0008] Furthermore, there are two axle seats, and the two axle seats are spaced apart from each other on the left and right.

[0009] Furthermore, the elastic member is a torsion spring sleeved on the outside of the rotating shaft, and the two arms of the torsion spring are respectively abutted against the pulling part and the support member, and the abutting part is located in front of the rotating shaft. Under the action of its own elastic force, the torsion spring can cooperate with the pulling part to push the support member to flip outward, so that the front part of the support member opens outward relative to the pulling part.

[0010] Furthermore, the shaft seat is located between the front and rear ends of the support member, and the support member can be flipped outward to the rear end to abut against the upper end of the pulling part to limit the outward opening angle of the front part of the support member relative to the pulling part.

[0011] Furthermore, the control member is a flexible structure, one end of the control member is fixedly connected to the lower end of the expansion member, and the fixed portion is located at the front side of the rotating shaft, and the other end of the control member passes backwards from the space between the rotating shaft and the pulling part.

[0012] Furthermore, blocking members are provided at the lower end of the expansion member corresponding to the front ends of the first conduit and the second conduit. When the expansion member is folded, the two blocking members will respectively block the front ends of the first conduit and the second conduit.

[0013] Furthermore, flexible members are provided at the rear ends of the two blocking members, and when the expansion member is folded, the two flexible members will respectively abut against the front ends of the first conduit and the second conduit.

[0014] Furthermore, an optical fiber is installed in the first conduit, the front end of the optical fiber is flush with the front end of the first conduit, and the front end of the first conduit is located behind the front end of the second conduit.

[0015] Furthermore, the front end of the expansion member is located in front of the front end of the optical fiber, and the lower side of the expansion member and the upper side of the pulling part are both mirror-finished.

[0016] The present invention discloses a surgical retractor, which has an original structural design, highly integrated functions and is practical. The hand-held part and the pulling part of the retractor body form a stable control basis, and the reverse hook design fits the ergonomics, which is convenient for medical staff to hold and exert force, and accurately pull the tissue. The first catheter has an optical fiber built in, which not only provides reliable lighting for the surgical site, but also the hard material and the flush optical fiber front end ensure stable light output and the catheter is clean and durable. The expansion mechanism is exquisite, the rotating shaft and the shaft seat cooperate to allow the expansion part to rotate flexibly, the torsion spring drives it to open naturally, effectively expand and squeeze the tissue, and the control part can be folded as needed to meet the needs of different stages of the operation. The second catheter is connected to the negative pressure suction structure to clean up the waste liquid in time and keep the surgical field clean. The baffle and the flexible part protect the front end of the catheter in all directions, clean up debris and impurities, and ensure that all components function normally. The mirror-treated surface optimizes lighting and reduces friction. This surgical retractor optimizes the surgical process in many aspects, reduces the burden of medical care, and reduces the risk of patients. It is expected to be widely used in various surgeries, promote the development of the field of surgical instruments, bring a new surgical operation experience, and contribute to the progress of the medical industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 The structure of an embodiment of the surgical retractor of the present invention is shown in FIG. Figure 1 ;

[0019] Figure 2 The structure of an embodiment of the surgical retractor of the present invention is shown in FIG. Figure 2 ;

[0020] Figure 3 for Figure 2 A schematic diagram of the structure enlargement at the center A;

[0021] Figure 4 This is a schematic structural diagram of a surgical retractor according to an embodiment of the present invention, in which a distraction member is hidden;

[0022] Figure 5 for Figure 4 A schematic diagram of the structure enlarged at B in the middle;

[0023] Figure 6 It is a schematic structural diagram of a distraction member of an embodiment of a surgical retractor of the present invention.

[0024] The meanings of the symbols in the accompanying drawings are:

[0025] The hook body 1, the hand-held part 11, the pulling part 12, the first catheter 2, the optical fiber 21, the second catheter 3, the opening mechanism 4, the opening member 41, the shaft seat 411, the stopper 412, the flexible member 413, the elastic member 42, the torsion spring 421, the support arm 422, the control member 43, and the rotating shaft 44. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] Reference Figure 1-Figure 6 As shown, the surgical retractor of this embodiment includes a retractor body 1, a first catheter 2, a second catheter 3 and a spreading mechanism 4. The retractor body 1 includes a hand-held portion 11 and a pulling portion 12 connected to the upper end of the hand-held portion 11 and extending forward. The pulling portion 12 is vertically connected to the hand-held portion 11. The lower end of the hand-held portion 11 also has a reverse hook. The reverse hook, the hand-held portion 11 and the pulling portion 12 are an integrated structure.

[0028] In this embodiment, the first conduit 2 and the second conduit 3 are arranged at intervals on the outside of the hook body 1 .

[0029] In this embodiment, an optical fiber 21 is installed in the first catheter 2, so that the rear end of the first catheter 2 can be connected to a cold light source to illuminate the surgical site of the patient through the optical fiber 21, so that the doctor can observe the surgical site. The first catheter 2 is made of hard material, which can provide support and protection for the optical fiber 21. The front end of the optical fiber 21 is flush with the front end of the first catheter 2. Compared with the optical fiber 21 extending out of the first catheter 2, this design can form a stable protection for the front end of the optical fiber 21, and compared with the optical fiber 21 being retracted into the first catheter 2, it can avoid the formation of a groove at the front end of the first catheter 2, thereby avoiding the accumulation of dirt and blocking the light.

[0030] In this embodiment, the rear end of the second catheter 3 is connected to a negative pressure suction structure, so that during the operation, when blood, exudate or other waste liquids that need to be cleaned up in time appear at the surgical site, these liquids can be quickly sucked out through the second catheter 3 with the help of the negative pressure suction structure. On the one hand, this helps to keep the surgical site relatively clean at all times, avoid the accumulation of waste liquid affecting the doctor's observation and operation of the surgical site, keep the surgical field clear at all times, and ensure the accuracy of the operation; on the other hand, timely removal of waste liquid can reduce the risk of infection caused by residual liquid, creating favorable conditions for the patient's postoperative recovery.

[0031] The expansion mechanism 4 includes an expansion member 41 rotatably connected to the outside of the pulling portion 12, an elastic member 42 driving the expansion member 41 to expand outward relative to the pulling portion 12, and a control member 43 for controlling the expansion member 41 to overcome the elastic force of the elastic member 42 and fold inward relative to the pulling portion 12.

[0032] In a natural state, the expansion member 41 is in an open state under the push of the elastic force of the elastic member 42 .

[0033] Specifically, in the present embodiment, a rotating shaft 44 located on the outside of the pulling part 12 is fixedly connected between the first conduit 2 and the second conduit 3, and a shaft seat 411 sleeved on the outside of the rotating shaft 44 is provided on the lower side of the support member 41. The rotating shaft 44 cooperates with the shaft seat 411 so that the support member 41 can rotate relative to the pulling part 12. In the present embodiment, there are two shaft seats 411, and the two shaft seats 411 are spaced apart from each other. Such a configuration can improve the connection strength between the support member 41 and the pulling part 12. In addition, allowing the two support members 41 to be close to the first conduit 2 and the second conduit 3 respectively can prevent the support member 41 from moving axially to improve stability. In the present embodiment, the elastic member 42 is a torsion spring 421 sleeved on the outside of the rotating shaft 44, and the two arms 422 of the torsion spring 421 are respectively in contact with the pulling part 12 and the support member 41, and the contact portion is located in front of the rotating shaft 44. In this way, the torsion spring 421 can cooperate with the pulling portion 12 to push the expansion member 41 to flip outward under the action of its own elastic force, so that the front part of the expansion member 41 is opened outward relative to the pulling portion 12.

[0034] When the surgical retractor needs to enter the patient's body for surgery, medical staff can use the control member 43 to control the expansion member 41 to overcome the elastic force of the elastic member 42 and fold inward relative to the pulling part 12, thereby reducing the volume to facilitate entry into the patient's surgical site.

[0035] After the surgical retractor enters the surgical site of the patient, the medical staff can control the pulling part 12 through the hand-held part 11 to pull the tissue. If during this process, the tissue on the side opposite to the pulling direction is squeezed on the retractor, the medical staff can control the expansion part 41 through the control part 43 to open outward relative to the pulling part 12 under the elastic force of the elastic part 42, so that the tissue on the opposite side can be expanded to avoid blocking the surgical field of view.

[0036] In this embodiment, the shaft seat 411 is located between the front and rear ends of the expansion member 41, and the expansion member 41 can be turned outward to the rear end to abut against the upper end of the pulling portion 12 to limit the angle of the front portion of the expansion member 41 relative to the pulling portion 12. In this way, the expansion member 41 can be prevented from being over-opened.

[0037] In this embodiment, the control member 43 is a flexible structure. One end of the control member 43 is fixed to the lower end of the expansion member 41 , and the fixed portion is located in front of the shaft 44 . The other end of the control member 43 passes backwards from the space between the shaft 44 and the pulling portion 12 .

[0038] When the medical staff needs to control the expansion member 41 to overcome the elastic force of the elastic member 42 and fold inward, they only need to pull back the rear end of the control member 43 that passes through the rotating shaft 44 and the pulling part 12. Since one end of the control member 43 is fixed to the lower end of the expansion member 41 and is located in front of the rotating shaft 44, through the conduction of force, the expansion member 41 can be driven to rotate around the rotating shaft 44, so that it folds inward, thereby reducing the space occupied by the surgical retractor as a whole, and facilitating smooth access to the patient's surgical site. During the operation, if the expansion member 41 is to be opened outward under the elastic force of the elastic member 42, it is only necessary to release the traction on the rear end of the control member 43, and the expansion member 41 will gradually reset and open under the push of the torsion spring 421, expanding the squeezed tissue to ensure a clear surgical field of view. In addition, the control member 43 adopts a flexible structure. During the operation of the surgical retractor, it does not hinder the normal movement of the various components, and can flexibly realize the control of the expansion member 41. The flexible material can also reduce the risk of damage to surrounding tissues and improve the safety of the operation.

[0039] In this embodiment, the lower end of the opening member 41 is provided with a stopper 412 corresponding to the front end of the first catheter 2 and the second catheter 3. When the opening member 41 is folded, the two stoppers 412 will respectively block the front ends of the first catheter 2 and the second catheter 3. This design has many practical significances. On the one hand, during the process of the surgical retractor entering the patient's body, the stopper 412 can provide additional protection for the front ends of the first catheter 2 and the second catheter 3 to prevent them from being accidentally collided and scratched by the surrounding tissues, thereby avoiding problems such as damage to the optical fiber 21 and blockage of the suction port of the second catheter 3, and ensuring the integrity and functionality of each component of the surgical retractor. On the other hand, the existence of the stopper 412 can also reduce the risk of foreign matter entering the first catheter 2 and the second catheter 3 to a certain extent, maintain its internal cleanliness, and reduce the adverse effects of impurities on surgical lighting and suction effects. In addition, when the surgical retractor completes its task and exits the patient's body, the stopper 412 also plays a protective role, helping the surgical retractor to withdraw smoothly, extending its service life, and indirectly ensuring the smooth implementation of subsequent operations.

[0040] In this embodiment, the rear ends of the two stoppers 412 are each provided with a flexible member 413. When the expansion member 41 is folded, the two flexible members 413 will respectively abut against the front ends of the first catheter 2 and the second catheter 3. This design further optimizes the performance of the surgical retractor. The flexible member 413 is soft in texture. When the expansion member 41 is folded, it can fit closely against the front ends of the first catheter 2 and the second catheter 3 to form a more rigorous protective barrier.

[0041] On the one hand, compared with simply relying on the baffle 412, the flexible member 413 can better adapt to the slight irregular shape that may exist at the front end of the catheter, fill potential gaps, and greatly reduce the possibility of foreign matter intrusion. Whether it is tiny tissue debris or other impurities, it is difficult to enter the interior of the catheter, which effectively ensures the cleanliness of the catheter, maintains the good light transmittance of the optical fiber 21 and the smoothness of the suction of the second catheter 3.

[0042] On the other hand, when the surgical hook is in the patient's body for surgery, if there are tissue debris attached to the front end of the first catheter 2 to block the light, since the optical fiber 21 is a key component for lighting the surgical site, the light obstruction will seriously affect the doctor's observation of the surgical area and increase the risk of surgery. At this time, thanks to the design of the stopper 412 and the flexible member 413 at the lower end of the propping member 41, the medical staff can manipulate the propping member 41 to perform appropriate folding actions. As the propping member 41 is folded, the stopper 412 drives the flexible member 413 to move. Due to its soft characteristics, the flexible member 413 can gently wipe the front end of the first catheter 2 without damaging the first catheter 2, and effectively remove the attached tissue debris. Moreover, even if the flexible member 413 accidentally touches the optical fiber 21 during the wiping process, it will not damage it, ensuring the normal operation of the lighting system. In this way, the normal projection of light can be quickly restored, ensuring that the surgical field of view is clear again, allowing doctors to accurately and smoothly advance the surgical process, and effectively ensuring the safety and effectiveness of the surgery.

[0043] Similarly, when there are tissue debris blocking the front end of the second catheter 3, the propping piece 41 and its auxiliary structure can also be used to cleverly solve this problem. When the medical staff notices that the suction effect of the second catheter 3 is weakened, and it is speculated that the front end may be blocked by tissue debris, the control piece 43 can be operated to fold the propping piece 41. At this time, the blocking piece 412 corresponding to the front end of the second catheter 3 and the flexible piece 413 at the rear end thereof move accordingly. The flexible piece 413, with its own soft texture, can gently scrape and wipe along the contour of the front end of the second catheter 3, gradually peeling off and cleaning up the accumulated tissue debris. This cleaning method is both accurate and gentle, and will not cause additional damage to the second catheter 3, effectively ensuring the stable performance of its suction function. After the cleaning is completed, the second catheter 3 can be smoothly sucked, and waste liquids such as blood, exudate, etc. from the surgical site can be removed in time to maintain the cleanliness of the surgical area, so that the doctor can concentrate on the surgical operation, avoid various problems caused by waste liquid accumulation or poor suction, and further improve the overall quality and success rate of the operation.

[0044] In this embodiment, the front end of the stretching member 41 is located in front of the front end of the optical fiber 21. In this design, during the operation, when the tissue needs to be stretched, the stretching member 41 can first contact and separate the tissue, ensuring that the light can be irradiated to the surgical site without obstruction, avoiding the tissue from blocking the light in advance, ensuring a good lighting effect, and allowing the doctor to clearly observe the surgical field. In addition, since the lower side of the stretching member 41 and the upper side of the pulling part 12 are both mirror-treated, the high reflective properties of the mirror surface can assist in lighting to a certain extent. When the light is emitted from the optical fiber 21 and irradiated on the mirror-treated surface, the light will be reflected, making the illumination of the surgical area more uniform and bright, further optimizing the lighting conditions, thus reducing the shadow area, helping the doctor to accurately identify the details of the tissue, reducing the risk of surgical operation errors, and improving the success rate and safety of the operation. At the same time, the mirror-treated surface is smoother, which can reduce the friction resistance with the tissue when the surgical retractor enters and exits the patient's body, reduce the patient's discomfort, and make the entire surgical process smoother.

[0045] In summary, the present invention discloses a surgical retractor with an original structural design, highly integrated functions and practicality. The hand-held portion 11 and the pulling portion 12 of the retractor body 1 form a stable control basis, and the reverse hook design fits the ergonomics, which is convenient for medical staff to hold and exert force, and accurately pull the tissue. The first catheter 2 has a built-in optical fiber 21, which not only provides reliable lighting for the surgical site, but also the hard material and the flush optical fiber front end ensure stable light output and clean and durable catheter. The expansion mechanism 4 is exquisite. The rotating shaft 44 and the shaft seat 411 cooperate to allow the expansion member 41 to rotate flexibly, and the torsion spring 421 drives it to open naturally, effectively expanding and squeezing the tissue, and the control member 43 can be folded as needed to meet the needs of different stages of the operation. The second catheter 3 is connected to the negative pressure suction structure to clean up the waste liquid in time and keep the surgical field clean. The baffle 412 and the flexible member 413 protect the front end of the catheter in all directions, clean up debris and impurities, and ensure that all components function normally. The mirror-treated surface optimizes lighting and reduces friction. This surgical retractor optimizes the surgical process in many aspects, reduces the burden on medical staff, and reduces patient risks. It is expected to be widely used in various types of surgeries, promote the development of the field of surgical instruments, bring a new surgical operation experience, and contribute to the advancement of the medical industry.

[0046] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A surgical retractor, characterized in that: The utility model comprises a hook body, a first catheter, a second catheter and a spreading mechanism, wherein the hook body comprises a hand-held part and a pulling part connected to the upper end of the hand-held part and extending forward, the first catheter and the second catheter are arranged at left and right intervals on the outside of the hook body, and the spreading mechanism comprises a spreading member rotatably connected to the outside of the pulling part, an elastic member driving the spreading member to spread outward relative to the pulling part, and a control member used to control the spreading member to overcome the elastic force of the elastic member and fold inward relative to the pulling part.

2. The surgical retractor according to claim 1, characterized in that: A rotating shaft located outside the pulling portion is fixedly connected between the first conduit and the second conduit, and a shaft seat sleeved on the outside of the rotating shaft is provided at the lower side of the expansion member.

3. The surgical retractor according to claim 2, characterized in that: There are two axle seats, and the two axle seats are spaced apart and distributed on the left and right sides.

4. The surgical retractor according to claim 2, characterized in that: The elastic member is a torsion spring sleeved on the outside of the rotating shaft, and the two arms of the torsion spring are respectively abutted against the pulling part and the support member, and the abutting part is located in front of the rotating shaft. Under the action of its own elastic force, the torsion spring can cooperate with the pulling part to push the support member to flip outward, so that the front part of the support member opens outward relative to the pulling part.

5. The surgical retractor according to claim 4, characterized in that: The shaft seat is located between the front and rear ends of the support member, and the support member can be turned outward to the rear end to abut against the upper end of the pulling part to limit the outward opening angle of the front part of the support member relative to the pulling part.

6. The surgical retractor according to claim 4, characterized in that: The control member is a flexible structure, one end of which is fixedly connected to the lower end of the expansion member, and the fixed portion is located at the front side of the rotating shaft, and the other end of the control member passes backwards from the space between the rotating shaft and the pulling part.

7. The surgical retractor according to claim 4, characterized in that: Blocking members are provided at the lower end of the expansion member corresponding to the front ends of the first conduit and the second conduit. When the expansion member is folded, the two blocking members will respectively block the front ends of the first conduit and the second conduit.

8. The surgical retractor according to claim 7, characterized in that: Flexible members are provided at the rear ends of the two blocking members. When the expansion member is folded, the two flexible members will respectively abut against the front ends of the first conduit and the second conduit.

9. The surgical retractor according to claim 8, characterized in that: An optical fiber is installed in the first conduit, and the front end of the optical fiber is flush with the front end of the first conduit. The front end of the first conduit is located behind the front end of the second conduit.

10. The surgical retractor according to claim 9, characterized in that: The front end of the expansion member is located in front of the front end of the optical fiber, and the lower side of the expansion member and the upper side of the pulling part are both mirror-finished.

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