Multifunctional drag hook for clinical operation of general surgery department

Abstract

The invention discloses a multifunctional retractor for general surgery department clinical operation, which comprises a retractor body, the retractor body comprises a retractor body, a retractor handle and a handle, the handle is internally provided with a storage groove, and one end of the retractor handle is in a square rod shape and is inserted into the storage groove; the hook body comprises an inner rod and a plurality of soft sleeves, and the inner rod is formed by integrally pouring and supporting a plurality of straight rods which are connected end to end in an arc-shaped rod shape. When the improved surgical operation drag hook is used, the pulling force of the hook body on an incision does not exceed a set threshold value, so that secondary injury to the incision of a patient caused by too large pulling force borne by the incision of the patient is avoided, and meanwhile, the position of the hook body on the incision can be adjusted without taking the hook body out of the incision; the position of the hook body on the incision is adjusted under the condition that the view field of the incision is large, finally, an operator can rapidly adjust the hook body to the proper position of the incision to hook and pull the incision, and use of the drag hook is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of surgical retractors, and particularly to a multifunctional retractor for general surgical clinical operations. Background Art

[0002] General surgical clinical operations refer to the medical process of treating diseases mainly by surgery. During the operation, various surgical instruments are generally required, and the retractor is one of them. The retractor is generally used to hook and pull the surgical incision so that the doctor can obtain a wider surgical field of view.

[0003] The existing surgical retractors are generally integrally made of metal. When the retractor hooks and pulls the surgical incision, the pulling force of the retractor on the surgical incision is generally manually controlled by the operator. The operator keeps the pulling state of the retractor for a long time. Due to the fatigue of the operator's hand, the hooking force of the retractor may deviate, which may lead to too much pulling force on the patient's incision and cause secondary injury to the patient's incision. Moreover, when the retractor hooks the incision, the operator often needs to take out the hook body of the retractor from the incision to change the position of the hook body of the retractor on the incision. After the hook body is taken out of the incision, due to the reset of the incision, the field of view at the incision quickly becomes smaller, so that it is easy for the operator to have a position deviation when reinserting the hook body of the retractor into the incision, and the operator often needs to operate multiple times to adjust the hook body to a suitable position in the incision, which is not convenient for the use of the retractor. Summary of the Invention

[0004] The purpose of the present invention is to provide a multifunctional retractor for general surgical clinical operations to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A multifunctional retractor for general surgical clinical operations, including a retractor body, the retractor body includes a hook body, a hook handle and a handle. A storage groove is formed in the handle, and one end of the hook handle is arranged in a square rod shape and inserted into the storage groove;

[0006] The hook body includes an inner rod and a plurality of soft sleeves. The inner rod is formed by connecting a plurality of straight rods end to end and integrally cast and supported in an arc rod shape. The soft sleeves are sleeved on the outer peripheral side of the inner rod, and the relative ends of two adjacent soft sleeves are in contact. The top end of the inner rod is threadedly connected to the other end of the hook handle. A circular hole is formed in the hook handle and the inner rod, and the inside of the circular hole is communicated with the inside of the storage groove. One end of the hook handle is fixedly sleeved with a piston plate, and the outer peripheral wall of the piston plate is in contact with the inner wall of the storage groove; A reset mechanism is arranged in the storage groove, and an adjustment mechanism is arranged in the handle;

[0007] An air extraction component is arranged at the tail end of the handle, and the air extraction component continuously extracts the gas in the storage groove;

[0008] The handle is provided with an adjusting component, and the adjusting component adjusts the air pressure intensity in the storage tank.

[0009] Preferably, an elastic sleeve is fixedly installed inside the soft sleeve, and the elastic sleeve is rotatably sleeved on the outer peripheral side of the inner rod through a bearing, and two adjacent elastic sleeves are in clearance fit.

[0010] Preferably, a limiting ring is fixedly installed in the storage tank, and the limiting ring is in clearance fit with the piston plate.

[0011] Preferably, the adjusting mechanism includes an inner tube and an outer tube. One end of the inner tube is fixedly connected to one end of the hook handle, and the inside of the inner tube communicates with the inside of the round hole. The other end of the inner tube passes through the inner hole of the limiting ring and slides into the opening at one end of the outer tube. The other end of the outer tube is communicated with a valve, and the adjusting end of the valve extends outside the handle and is fixedly connected to the handle.

[0012] Preferably, a sealing ring is fixedly installed inside the tube wall at the other end of the inner tube, and the outer ring wall of the sealing ring is in contact with the inner wall of the outer tube.

[0013] Preferably, the air extraction component includes an interface and a storage cylinder. The liquid inlet end of the interface is inserted into the storage tank and fixedly connected to the handle. A conduit is fixedly penetrated through the center position of the top side of the storage cylinder, and the liquid inlet end of the conduit is communicated with the liquid discharge end of the interface through a soft tube. An air pump is arranged on the outer peripheral side of the conduit, and the bottom side of the air pump is fixedly connected to the top side of the storage cylinder. The air inlet end of the air pump fixedly penetrates through the cylinder wall of the storage cylinder.

[0014] Preferably, the inner wall at the end of the storage tank away from the hook handle is arranged in a hemispherical arc shape, and the liquid inlet end of the handle is coplanar with the hemispherical surface of the storage tank.

[0015] Preferably, the inner bottom wall of the storage cylinder is arranged in an inclined shape, and the bottom end of the conduit is in clearance fit with the inner bottom wall of the storage cylinder. A drain valve is fixedly installed on the outer peripheral wall at the bottom of the storage cylinder, and the liquid inlet end of the drain valve extends to the lowest point of the inner bottom wall of the storage cylinder.

[0016] Preferably, the adjusting component includes an air inlet pipe. The air inlet pipe is located above the valve, and the bottom end of the air inlet pipe is inserted into the storage tank and fixedly connected to the handle. A support ring is fixedly installed at the bottom inside the air inlet pipe. A sealing plate is arranged on the bottom side of the support ring, and the top side of the sealing plate is in contact with the bottom side of the support ring. An adjusting rod is slidably penetrated through the center position of the sealing plate. A limiting disc is rotatably sleeved at the bottom end of the adjusting rod. A spring is wound around the outer peripheral side of the bottom of the adjusting rod, and both ends of the spring are fixedly connected to the limiting disc and the sealing plate respectively.

[0017] Preferably, brackets are fixedly installed inside the support ring and at the top opening of the intake pipe. The bottom of the adjusting rod slidably penetrates through the bottom bracket, and the top of the adjusting rod threadedly penetrates through the top bracket.

[0018] The present invention has at least the following beneficial effects:

[0019] 1. When the improved surgical retractor is in use, the pulling force of the hook body on the incision will not exceed the set threshold, so as to avoid secondary injury to the patient's incision caused by excessive pulling force on the incision. At the same time, the position of the hook body on the incision can be adjusted without removing the hook body from the incision, so as to adjust the position of the hook body on the incision when the incision vision is large. Finally, the operator can quickly adjust the hook body to the appropriate position on the incision for the pulling operation of the incision, which facilitates the use of the retractor;

[0020] 2. The operator adjusts the circular hole to communicate with the storage tank through the adjustment mechanism. The operator holds the handle and brings the suction end of the circular hole close to the waste liquid, then the waste liquid can be sucked out of the incision and intercepted and stored in the air extraction component. And during this process, by adjusting the component to adjust the strength of the negative pressure chamber in the storage tank, the adsorption force of the intake end of the circular hole can be adjusted, so as to avoid excessive adsorption force at the intake end of the circular hole, which may suck the patient's skin and cause secondary injury to the incision when the hook body approaches the waste liquid, and expands the function of the device and increases the applicable range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is the front view of the overall structure of the present invention;

[0023] Figure 2 It is the three-dimensional view of the overall structure of the present invention;

[0024] Figure 3 It is the three-dimensional view of the internal structure of the handle of the present invention;

[0025] Figure 4 It is the three-dimensional view of the internal structure of the hook handle and the hook body of the present invention;

[0026] Figure 5 It is the front view of the internal structure of the hook body of the present invention;

[0027] Figure 6 For the present invention Figure 5 The enlarged view of the structure at A in

[0028] Figure 7 Stereogram of part of the inner tube, part of the outer tube and the valve of the present invention;

[0029] Figure 8 Stereogram of the internal structure of the storage cylinder of the present invention;

[0030] Figure 9 Stereogram of the intake pipe and the adjusting rod of the present invention;

[0031] Figure 10 Stereogram of the internal structure of the intake pipe of the present invention.

[0032] In the figure: 1. Hook body; 11. Hook body; 111. Inner rod; 112. Soft sleeve; 113. Elastic sleeve; 12. Hook handle; 13. Handle; 14. Round hole; 15. Piston plate; 16. Limit ring; 17. Adjusting mechanism; 171. Inner tube; 172. Outer tube; 173. Valve; 174. Sealing ring; 18. Storage tank; 2. Air extraction assembly; 21. Interface; 22. Storage cylinder; 23. Duct; 24. Soft tube; 25. Air pump; 26. Drain valve; 3. Adjusting assembly; 31. Intake pipe; 32. Support ring; 33. Sealing plate; 34. Adjusting rod; 35. Limit disc; 36. Spring; 37. Bracket. Detailed implementation manners

[0033] In order to make the technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] The present invention provides a technical solution: Referring to Figure 1 - Figure 6 , a multifunctional retractor for general surgery clinical operations disclosed by the present invention includes a retractor body 1. The retractor body 1 includes a hook body 11, a hook handle 12 and a handle 13. A storage tank 18 is provided inside the handle 13, and one end of the hook handle 12 is arranged in a square rod shape and inserted into the storage tank 18;

[0035] The hook body 11 includes an inner rod 111 and a plurality of soft sleeves 112. The inner rod 111 is formed by connecting a plurality of straight rods end to end and integrally cast and supported in an arc-shaped rod shape. The soft sleeves 112 are sleeved on the outer peripheral side of the inner rod 111, and the opposite ends of two adjacent soft sleeves 112 are in contact. The top end of the inner rod 111 is threadedly connected to the other end of the hook handle 12. A round hole 14 is provided in the hook handle 12 and the inner rod 111, and the inside of the round hole 14 is communicated with the inside of the storage tank 18. One end of the hook handle 12 is fixedly sleeved with a piston plate 15, and the outer peripheral wall of the piston plate 15 is in contact with the inner wall of the storage tank 18. An adjusting mechanism 17 is provided inside the handle 13;

[0036] The end of the handle 13 is provided with an air extraction component 2, and the air extraction component 2 continuously extracts the gas in the storage tank 18;

[0037] The handle 13 is provided with an adjustment component 3, and the adjustment component 3 adjusts the air pressure in the storage tank 18.

[0038] In this embodiment, it should be noted that: the hook body 11 is made of stainless hard metal materials such as stainless steel or titanium alloy; the inner rod 111 is made of hard medical plastic materials; the soft sleeve 112 is made of medical silicone, and the relative ends of two adjacent soft sleeves 112 are in contact with each other to block the gap between the two soft sleeves 112; the square rod end of the hook handle 12 is slidably connected to the handle 13, and the edge of the square rod end of the hook handle 12 is arranged in an arc shape, so that there is a certain gap between the hook handle 12 and the handle 13, so that when the piston plate 15 moves in the storage tank 18, the outside air can flow into the gap between the hook handle 12 and the inner wall of the storage tank 18 through the gap between the hook handle 12 and the handle 13, so as to avoid the formation of a negative pressure cavity between the hook handle 12, the piston plate 15 and the inner wall of the storage tank 18 when the piston plate 15 moves in the piston cylinder, which affects the movement of the piston plate 15 in the storage tank 18;

[0039] When the improved surgical retractor is used, the air extraction component 2 continuously extracts the gas in the storage tank 18, so as to form a negative pressure cavity in the storage tank 18. At the same time, the negative pressure intensity in the storage tank 18 is adjusted through the adjustment component 3, so as to form a negative pressure cavity with a corresponding intensity in the storage tank 18, so as to apply a corresponding intensity of pulling force to the hook handle 12 through the piston plate 15. The operator holds the handle 13 and adjusts the position of the hook body 11 through the hook handle 12, so that the hook body 11 hooks on the patient's incision. When the pulling force of the incision on the hook body 11 exceeds the threshold value, part of the hook handle 12 will slide out of the storage tank 18. The operator can judge whether the pulling force on the patient's incision is too large and causes secondary injury to the patient's incision according to whether the hook handle 12 moves;

[0040] When the hook body 11 hooks on the incision, the operator can horizontally move the hook body 11 through the handle 13 and the hook handle 12. At this time, due to the friction between the soft sleeve 112 and the incision, the corresponding soft sleeve 112 rotates around the inner rod 111, so that the hook body 11 can slide along the incision, and the patient's incision will not be subjected to a large friction force, resulting in secondary injury to the patient's incision. At the same time, when the vision at the incision pulling part is large, the pulling position of the hook body 11 on the patient's incision can be adjusted, so that the operator can adjust the position of the hook body 11 on the incision without taking the hook body 11 out of the incision. Finally, the operator can quickly adjust the hook body 11 to the appropriate position of the incision for the hooking operation of the incision, which facilitates the use of the retractor;

[0041] The operator makes the round hole 14 communicate with the inside of the storage tank 18 through the adjustment of the adjusting mechanism 17, and then adjusts the position of the air inlet end of the round hole 14 according to the above adjustment. When the air inlet end of the round hole 14 is close to the waste liquid, the waste liquid can be sucked out from the incision and intercepted in the air extraction assembly 2 for storage. During this process, the intensity of the negative pressure chamber in the storage tank 18 is adjusted through the adjusting assembly 3, so as to adjust the adsorption force of the air inlet end of the round hole 14, so as to avoid excessive adsorption force at the air inlet end of the round hole 14, and when the hook body 11 approaches the waste liquid, sucking the patient's skin and causing secondary injury to the incision.

[0042] In a further preferred embodiment of the present invention, as Figure 5 and Figure 6 shown, an elastic sleeve 113 is fixedly installed in the soft sleeve 112, and the elastic sleeve 113 is rotatably sleeved on the outer peripheral side of the inner rod 111 through a bearing and the adjacent two elastic sleeves 113 are in clearance fit;

[0043] In this embodiment, it should be noted that: the elastic sleeve 113 is made of medical elastic plastic;

[0044] According to Figure 6 shown, during the rotation of the soft sleeve 112, the elastic sleeve 113 rotates around the inner rod 111. Since the elastic sleeve 113 is connected to the inner rod 111 through a bearing, the resistance received during the rotation of the soft sleeve 112 can be greatly reduced. And during the rotation of the soft sleeve 112, the adjacent two soft sleeves 112 are in mutual contact, and the positions of each part at both ends of the soft sleeve 112 undergo corresponding telescopic deformation, so that there is almost no gap between the adjacent two soft sleeves 112, so that the waste liquid at the patient's incision almost does not flow into the soft sleeve 112 through the gap between the soft sleeves 112. It should be noted that the hook body 11 can be used once or recycled and fully disinfected for reuse after the hook body 11 is used.

[0045] In a further preferred embodiment of the present invention, as Figure 3 shown, a limiting ring 16 is fixedly installed in the storage tank 18, and the limiting ring 16 is in clearance fit with the piston plate 15;

[0046] In this embodiment, according to Figure 3 shown, after the negative pressure chamber is formed in the storage tank 18, due to the pressure difference on both sides of the piston plate 15, the piston plate 15 receives a pulling force exerted by the negative pressure chamber on the piston plate 15, so that part of the hook handle 12 retracts into the storage tank 18 until the piston plate 15 abuts against the limiting ring 16, so as to avoid the length of the hook handle 12 retracting into the storage tank 18 being too long and affecting the use of the device.

[0047] In a further preferred embodiment of the present invention, as Figure 3 and Figure 7As shown, the adjusting mechanism 17 includes an inner tube 171 and an outer tube 172. One end of the inner tube 171 is fixedly connected to one end of the hook handle 12, and the inside of the inner tube 171 communicates with the inside of the round hole 14. The other end of the inner tube 171 passes through the inner hole of the limit ring 16 and slides into the opening at one end of the outer tube 172. The other end of the outer tube 172 is connected and provided with a valve 173, and the adjusting end of the valve 173 extends outside the handle 13 and is fixedly connected to the handle 13;

[0048] In this embodiment, it should be noted that: the inner tube 171 has a clearance fit with the inner wall of the limit ring 16 and the inner wall of the storage groove 18;

[0049] According to Figure 3 and Figure 7 As shown, during the process of the hook handle 12 retracting into the storage groove 18, part of the inner tube 171 is synchronously driven to insert into the outer tube 172. The movement of the hook handle 12 will not affect the position of the valve 173, and the position of the valve 173 on the handle 13 is stable, facilitating the opening and closing of the valve 173;

[0050] When the device sucks the waste liquid, according to Figure 3 - Figure 5 As shown, the waste liquid sucked into the round hole 14 is discharged from the liquid discharge end of the valve 173 due to the diversion of the inner tube 171 and the outer tube 172. Due to the blockage of the limit ring 16, the waste liquid will not adhere to the inner wall of the storage groove 18 between the limit ring 16 and the piston plate 15, affecting the sliding of the piston plate 15 in the storage groove 18.

[0051] In a further preferred embodiment of the present invention, as Figure 7 shown, a sealing ring 174 is fixedly installed inside the tube wall at the other end of the inner tube 171, and the outer ring wall of the sealing ring 174 is in contact with the inner wall of the outer tube 172;

[0052] In this embodiment, as shown in 7, during the process of the inner tube 171 sliding inside the outer tube 172, the sealing ring 174 can be pushed to slide along the inner wall of the outer tube 172, thereby cleaning the waste liquid adhering to the inner wall of the outer tube 172, so as to avoid the formation of difficult-to-clean dirt on the inner wall of the outer tube 172 due to the long-term adhesion of the waste liquid, affecting the sliding of the inner rod 111 inside the outer tube 172. And the sealing ring 174 can block the gap between the outer peripheral wall of the inner tube 171 and the inner wall of the outer tube 172, so as to avoid part of the waste liquid flowing out from the gap between the outer peripheral wall of the inner tube 171 and the inner wall of the outer tube 172 during the process of the waste liquid flowing from the inner tube 171 into the outer tube 172.

[0053] In a further preferred embodiment of the present invention, as Figure 2 、 Figure 3 and Figure 8As shown, the air extraction assembly 2 includes an interface 21 and a storage cylinder 22. The liquid inlet end of the interface 21 is inserted into the storage tank 18 and fixedly connected to the handle 13. At the central position on the top side of the storage cylinder 22, a conduit 23 is fixedly penetrated and installed. The liquid inlet end of the conduit 23 is communicated with the liquid discharge end of the interface 21 through a flexible tube 24. An air pump 25 is provided on the outer peripheral side of the conduit 23, and the bottom side of the air pump 25 is fixedly connected to the top side of the storage cylinder 22. The air inlet end of the air pump 25 fixedly penetrates the cylinder wall of the storage cylinder 22;

[0054] In this embodiment, it should be noted that the above storage cylinder 22 is composed of a cylinder body and a hand-held rod;

[0055] According to Figure 3 and Figure 8 As shown, when using the device, the air pump 25 starts to continuously extract the gas in the storage cylinder 22, so as to form a stable negative pressure chamber in the storage cylinder 22. At this time, due to the pressure difference between the bottom opening of the conduit 23 and the air inlet end of the interface 21, the gas in the storage tank 18 passes through the interface 21, the flexible tube 24 and the conduit 23 and flows into the water in the storage cylinder 22 to supplement the gas in the storage cylinder 22;

[0056] After the waste liquid flows out from the liquid discharge end of the valve 173, due to the entrainment of the air flow, the waste liquid passes through the interface 21 and the flexible tube 24 and flows into the conduit 23. According to Figure 3 As shown, the waste liquid flowing into the conduit 23 is discharged into the water in the storage cylinder 22 by the conduit 23. The waste liquid is intercepted and stored in the storage cylinder 22 through the adsorption force of the water in the water storage cylinder on the waste liquid, while the gas bubbles out of the water to supplement the gas lost in the storage cylinder 22, so as to prevent the waste liquid from splashing to the outside following the air flow and affecting the environment in the operating room;

[0057] It should be noted that before the operator uses the device, the operator can connect the liquid discharge end of the drain valve 26 to the faucet through a water pipe, so that water can be injected into the storage cylinder 22 from the drain valve 26 until the water surface in the water storage cylinder covers the bottom opening of the conduit 23.

[0058] In a further preferred embodiment of the present invention, as Figure 3 shown, the inner wall of the storage tank 18 at the end away from the hook handle 12 is provided in a hemispherical arc shape, and the liquid inlet end of the handle 13 is coplanar with the hemispherical surface of the storage tank 18;

[0059] In this embodiment, according to Figure 3 shown, when the waste liquid is discharged from the drain end of the valve 173, it directly falls onto the arc surface in the storage tank 18. Subsequently, due to the drive of the air flow, almost all of the waste liquid slides directly into the interface 21 along the arc surface of the storage tank 18, so as to reduce the contact area between the waste liquid and the inner wall of the storage tank 18, resulting in difficulty in cleaning the device.

[0060] In a further preferred embodiment of the present invention, as Figure 8 shown, the inner bottom wall of the storage cylinder 22 is provided in an inclined shape, and the bottom end of the conduit 23 is in clearance fit with the inner bottom wall of the storage cylinder 22. A drain valve 26 is fixedly installed on the outer peripheral wall at the bottom of the storage cylinder 22, and the water inlet end of the drain valve 26 extends to the lowest point of the inner bottom wall of the storage cylinder 22;

[0061] In this embodiment, when there is too much waste liquid stored in the storage cylinder 22, the operator moves the storage cylinder 22 through the handle rod on the storage cylinder 22 to move the storage cylinder 22 to a suitable position. Then, the drain valve 26 is opened, and the waste liquid in the storage cylinder 22 flows along the inclined inner bottom wall of the storage cylinder 22 and gathers at the water inlet end of the drain valve 26. Then, it is discharged from the water outlet end of the drain valve 26, and almost all the waste liquid in the storage cylinder 22 can be discharged to avoid a large amount of waste liquid remaining in the storage cylinder 22 from affecting the cleaning effect of the storage cylinder 22.

[0062] In a further preferred embodiment of the present invention, as Figure 2 、 Figure 9 and Figure 10 shown, the adjusting assembly 3 includes an air inlet pipe 31. The air inlet pipe 31 is located above the valve 173, and the bottom end of the air inlet pipe 31 is inserted into the storage tank 18 and fixedly connected to the handle 13. A support ring 32 is fixedly installed at the bottom inside the air inlet pipe 31. A sealing plate 33 is provided on the bottom side of the support ring 32, and the top side of the sealing plate 33 is in contact with the bottom side of the support ring 32. An adjusting rod 34 is slidably penetrated through the center position of the sealing plate 33. A limiting disc 35 is rotatably sleeved at the bottom end of the adjusting rod 34. A spring 36 is wound around the outer peripheral side of the bottom of the adjusting rod 34, and both ends of the spring 36 are fixedly connected to the limiting disc 35 and the sealing plate 33 respectively;

[0063] In this embodiment, it should be noted that: the bottom end of the above-mentioned air inlet pipe 31 is coplanar with the inner wall of the storage tank 18;

[0064] After a negative pressure chamber is formed in the storage tank 18, according to Figure 2 and Figure 10 shown, the operator adjusts the position of the adjusting rod 34 to adjust the distance between the sealing plate 33 and the limiting disc 35, and further adjusts the compression degree of the spring 36 by the sealing plate 33 and the limiting disc 35, so as to adjust the thrust of the spring 36 on the sealing plate 33, so that when the negative pressure intensity in the storage tank 18 reaches the corresponding intensity, the outside air will push the sealing plate 33 to separate from the support ring 32, and thus flow into the storage tank 18 from the air inlet pipe 31. Finally, the intensity of the negative pressure chamber in the storage tank 18 is adjusted to adjust the suction pulling force received by the hook handle 12 as needed when the operator pulls the patient's incision, which facilitates the use of the device.

[0065] In a further preferred embodiment of the present invention, as Figure 2 andFigure 9 As shown, a bracket 37 is fixedly installed in the support ring 32 and the top opening of the air inlet pipe 31, the bottom of the adjustment rod 34 slides through the bottom bracket 37, and the top thread of the adjustment rod 34 penetrates the top bracket 37;

[0066] In this embodiment, it should be noted that: the bracket 37 is made of a ring sleeve and a plurality of connecting rods cast in one piece; the top end of the adjusting rod 34 is set in a dial shape;

[0067] according to Figure 2 and Figure 10 As shown, when the operator adjusts the position between the sealing plate 33 and the limit plate 35, the operator turns the dial on the adjusting rod 34 to make the adjusting rod 34 rotate inside the two brackets 37. Since the bracket 37 cannot rotate with the adjusting rod 34 and the adjusting rod 34 is threadedly connected to the top bracket 37, the rotating threaded rod moves up or down, thereby driving the limit plate 35 to move up or down. Since the bottom bracket 37 constrains the adjusting rod 34, the adjusting rod 34 is located in the intake pipe 31 and moves in an up and down linear trajectory. The operator can determine the length of the limit plate 35 moving up or down by the number of turns of the adjusting rod 34, which facilitates the adjustment of the elastic force of the spring 36.

[0068] Working principle: When the improved surgical retractor is used, the operator injects water into the storage tube 22 through the catheter 23 until the water level in the storage tube 22 overflows the bottom opening of the catheter 23 to increase the overall weight of the storage tube 22, and then lifts the storage tube 22 with the hand pole and places the storage tube 22 on the ground near the operating table, then takes out a new hook body 11 and screws the inner rod 111 onto the hook handle 12 to complete the connection between the hook body 11 and the hook handle 12, and the preparation before the device is used is completed;

[0069] During the use of the hook body 1, the operator starts the air pump 25 to continuously extract the gas in the storage tube 22, so that a stable negative pressure chamber is formed in the storage tube 22. At this time, due to the pressure difference between the bottom opening of the conduit 23 and the air inlet end of the interface 21, the gas in the storage tank 18 passes through the interface 21, the soft tube 24 and the conduit 23 and flows into the water in the storage tube 22. Then, the gas emerges from the water to replenish the gas lost in the storage tube 22. At the same time, the external gas passes through the air inlet pipe 31 and pushes the sealing plate 33 to separate from the support ring 32, and then passes through the gap between the sealing plate 33, the support ring 32 and the inner wall of the air inlet pipe 31, and flows into the storage tank 18 from the bottom opening of the air inlet pipe 31 to replenish the gas lost in the storage tank 18, and finally a negative pressure chamber of corresponding strength is synchronously formed in the storage tank 18.

[0070] After the air pump 25 is started, the operator turns the dial on the adjusting rod 34, causing the adjusting rod 34 to rotate within the two brackets 37. Since the brackets 37 cannot follow the rotation of the adjusting rod 34 and the adjusting rod 34 is threadedly connected to the top bracket 37, the rotating threaded rod moves up or down to adjust the distance between the limiting plate 35 and the sealing plate 33. Furthermore, by adjusting the degree of compression of the spring 36 by the sealing plate 33 and the limiting plate 35, the thrust of the spring 36 on the sealing plate 33 is adjusted. Thus, when the negative pressure intensity in the storage tank 18 reaches the corresponding intensity, external gas will flow into the storage tank 18 through the intake pipe 31. Finally, the operator can adjust the intensity of the negative pressure chamber in the storage tank 18 by rotating the adjusting rod 34;

[0071] When a negative pressure chamber is formed in the storage tank 18, due to the pressure difference on both sides of the piston plate 15, the piston plate 15 moves towards the limiting ring 16 until the piston plate 15 abuts against the limiting ring 16. Subsequently, the operator holds the handle 13 and adjusts the position of the hook body 11 through the hook handle 12, causing the hook body 11 to hook onto the patient's incision. By pulling the incision with the hook body 11, the pulling force on the hook body 11 also gradually increases. When the pulling force on the hook body 11 is higher than the adsorption force of the negative pressure chamber in the storage tank 18 on the piston plate 15, part of the hook handle 12 slides out of the storage tank 18. The operator can judge whether the pulling force on the patient's incision is too large and causes secondary injury to the patient's incision based on whether the hook handle 12 moves;

[0072] When the operator hooks the hook body 11 onto the patient's incision, the operator can horizontally move the hook body 11 through the handle 13 and the hook handle 12. At this time, due to the friction between the soft sleeve 112 and the incision, the elastic sleeve at the corresponding position rotates around the inner rod 111, enabling the hook body 11 to slide along the incision. Moreover, the patient's incision will not be subjected to excessive friction, preventing secondary injury to the patient's incision. At the same time, by sliding the hook body 11 on the incision, the position of the hook body 11 pulling the incision can be adjusted when the view at the incision pulling area is relatively large, so that the operator does not need to remove the hook body 11 from the incision and then replace the hook body 11 to change the pulling position of the incision. Finally, the operator can quickly adjust the hook body 11 to the appropriate position on the incision for the incision pulling operation;

[0073] The operator opens valve 173 to make the inside of round hole 14 communicate with the inside of storage tank 18. At this time, due to the pressure difference between the air inlet end of round hole 14 and the air outlet end of valve 173, some external gas passes through round hole 14, inner tube 171 and outer tube 172 and flows into storage tank 18 to supplement the lost gas in storage tank 18. The operator positions the air inlet end of round hole 14 close to the waste liquid according to the position of the above-mentioned moving hook body 11, then the waste liquid can be sucked into round hole 14 and discharged from the liquid outlet end of valve 173. Subsequently, due to the entrainment of the air flow, the waste liquid passes through interface 21, flexible tube 24 and conduit 23 and is directly injected into the water in storage cylinder 22. Then the waste liquid dissolves in the water in storage cylinder 22, and the waste liquid is intercepted and stored in storage cylinder 22 by the adsorption force of the water in the water storage cylinder, while the gas bubbles out of the water to supplement the lost gas in storage cylinder 22. And during this process, according to the above adjustment of the intensity of the negative pressure chamber in storage tank 18, the pressure difference between the air inlet end of round hole 14 and the air outlet end of valve 173 can be adjusted, and then the adsorption force at the air inlet end of round hole 14 can be adjusted to avoid excessive adsorption force at the air inlet end of round hole 14, which may suck and pull the patient's skin and cause secondary injury to the incision when hook body 11 approaches the waste liquid;

[0074] After the device is used up, according to the above, hot water and alcohol are sucked through round hole 14, and with the flow of hot water and alcohol, the inside of the device can be directly cleaned.

[0075] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional retractor for general surgery clinical operations, comprising a retractor body (1), characterized in that: The retractor body (1) includes a hook body (11), a hook handle (12) and a handle (13). A storage groove (18) is formed inside the handle (13), and one end of the hook handle (12) is arranged in a square rod shape and inserted into the storage groove (18). The hook body (11) includes an inner rod (111) and a plurality of soft sleeves (112). The inner rod (111) is formed by connecting a plurality of straight rods end to end and integrally cast and supported in an arc shape. The soft sleeves (112) are sleeved on the outer peripheral side of the inner rod (111), and the opposite ends of two adjacent soft sleeves (112) are in contact. The top end of the inner rod (111) is threadedly connected to the other end of the hook handle (12). A circular hole (14) is formed in both the hook handle (12) and the inner rod (111), and the inside of the circular hole (14) is communicated with the inside of the storage groove (18). A piston plate (15) is fixedly sleeved at one end of the hook handle (12), and the outer peripheral wall of the piston plate (15) is in contact with the inner wall of the storage groove (18). An adjusting mechanism (17) is arranged inside the handle (13). An air extraction assembly (2) is arranged at the tail end of the handle (13), and the air extraction assembly (2) continuously extracts the gas inside the storage groove (18). An adjusting assembly (3) is arranged on the handle (13), and the adjusting assembly (3) adjusts the air pressure intensity inside the storage groove (18).

2. The multifunctional retractor for general surgery clinical operations according to claim 1, wherein: An elastic sleeve (113) is fixedly installed inside the soft sleeve (112), and the elastic sleeve (113) is rotatably sleeved on the outer peripheral side of the inner rod (111) through a bearing and two adjacent elastic sleeves (113) are in clearance fit.

3. The multifunctional retractor for general surgery clinical operations according to claim 2, characterized in that: A limiting ring (16) is fixedly installed inside the storage groove (18), and the limiting ring (16) is in clearance fit with the piston plate (15).

4. The multifunctional retractor for general surgery clinical operation according to claim 3, characterized in that: The adjusting mechanism (17) includes an inner tube (171) and an outer tube (172). One end of the inner tube (171) is fixedly connected to one end of the hook handle (12), and the inside of the inner tube (171) is communicated with the inside of the circular hole (14). The other end of the inner tube (171) passes through the inner hole of the limiting ring (16) and is slidably inserted into the opening at one end of the outer tube (172). A valve (173) is connected and installed at the other end of the outer tube (172), and the adjusting end of the valve (173) extends outside the handle (13) and is fixedly connected to the handle (13).

5. The multifunctional retractor for general surgery clinical operations according to claim 4, characterized in that: A sealing ring (174) is fixedly installed inside the tube wall at the other end of the inner tube (171), and the outer ring wall of the sealing ring (174) is in contact with the inner wall of the outer tube (172).

6. The multifunctional retractor for general surgery clinical operations according to claim 5, characterized in that: The air extraction assembly (2) includes an interface (21) and a storage cylinder (22). The liquid inlet end of the interface (21) is inserted into the storage groove (18) and fixedly connected to the handle (13). A conduit (23) is fixedly penetrated and installed at the central position on the top side of the storage cylinder (22), and the liquid inlet end of the conduit (23) is communicated and installed with the liquid discharge end of the interface (21) through a soft tube (24). An air pump (25) is arranged on the outer peripheral side of the conduit (23), and the bottom side of the air pump (25) is fixedly connected to the top side of the storage cylinder (22). The air inlet end of the air pump (25) fixedly penetrates the cylinder wall of the storage cylinder (22).

7. The multifunctional retractor for general surgery clinical operation according to claim 6, wherein: The inner wall of one end of the storage tank (18) away from the hook handle (12) is arranged in a hemispherical arc shape, and the liquid inlet end of the handle (13) is coplanar with the hemispherical surface of the storage tank (18).

8. The multifunctional retractor for general surgical clinical operations according to claim 7, wherein: The inner bottom wall of the storage cylinder (22) is arranged in an inclined plane shape, and the bottom end of the conduit (23) is in clearance fit with the inner bottom wall of the storage cylinder (22). A drain valve (26) is fixedly installed on the outer peripheral wall of the bottom of the storage cylinder (22), and the water inlet end of the drain valve (26) extends to the lowest point of the inner bottom wall of the storage cylinder (22).

9. The multifunctional retractor for general surgery clinical operation according to claim 8, characterized in that: The adjusting assembly (3) includes an air inlet pipe (31). The air inlet pipe (31) is located above the valve (173), and the bottom end of the air inlet pipe (31) is inserted into the storage tank (18) and fixedly connected to the handle (13). A support ring (32) is fixedly installed at the bottom inside the air inlet pipe (31). A sealing plate (33) is arranged on the bottom side of the support ring (32), and the top side of the sealing plate (33) is in contact with the bottom side of the support ring (32). An adjusting rod (34) is slidably penetrated through the center position of the sealing plate (33). A limiting disc (35) is rotatably sleeved at the bottom end of the adjusting rod (34). A spring (36) is wound around the outer peripheral side of the bottom of the adjusting rod (34), and the two ends of the spring (36) are respectively fixedly connected to the limiting disc (35) and the sealing plate (33).

10. The multifunctional retractor for general surgery clinical operation according to claim 9, wherein: Supports (37) are fixedly installed both inside the support ring (32) and in the top opening of the air inlet pipe (31). The bottom of the adjusting rod (34) slidably penetrates through the bottom support (37), and the top of the adjusting rod (34) threadedly penetrates through the top support (37).

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