Gastrointestinal surgical operation auxiliary device

Abstract

The invention discloses an auxiliary device for gastrointestinal surgery, which relates to the technical field of medical instruments and comprises a base, a vertical shaft, a cantilever and a traction component, the vertical shaft is erected on the base and forms a fixable left-right sliding connection relationship with the base, the cantilever is fixed on the vertical shaft and forms a fixable up-down sliding connection relationship with the vertical shaft, and the traction component is fixed on the cantilever. A fastening sleeve is arranged at the end, away from the vertical shaft, of the cantilever, the fastening sleeve is hinged to the cantilever, the fastening sleeve is sleeved with a traction assembly, and the traction assembly comprises a supporting claw capable of being opened and a shell. The traction assembly with the supporting claws capable of being opened is adopted, the supporting claws are gathered before traction and conveniently enter an incision, and after the supporting claws enter the incision, the supporting claws are opened to enlarge the lifting area so as to expose more surgical fields and facilitate follow-up surgery. And by adopting the cantilever design, while the stability is considered, the situation of mutual interference or influence on operation during cooperative use with other equipment can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a gastrointestinal surgical auxiliary device. Background Art

[0002] Exposure of the intraoperative visual field is very important for the successful implementation of single-port laparoscopic surgery, especially in surgeries on the stomach, spleen, pancreas, etc. Due to the obstruction of the left lobe of the liver, the stomach, pancreas, spleen and other organs are often poorly exposed, affecting the progress of the operation and increasing the difficulty of the operation.

[0003] With the development of science and technology, minimally invasive surgery has been widely used in the medical field. In order to obtain an ideal surgical field, the left lobe of the liver needs to be kept in a good retraction state. During the operation, doctors often need to use a retractor to move the liver away from other smaller organs and connective tissues, so that doctors can observe the area within the surgical field more clearly and can manipulate other surgical tools within a larger area.

[0004] However, due to the small diameter of the incision in minimally invasive surgery, the traction part of a general retractor is relatively wide, and a large window is required to place the traction part into the abdominal cavity to pull the liver, which is not suitable for liver traction in minimally invasive surgery. On the other hand, the traction capacity of a retractor with a smaller traction part is difficult to reach the level of exposing a large enough surgical field of view, resulting in poor traction effect. In addition, when retracting the liver, it is necessary to adjust the angle of the retractor relative to the cantilever to retract the liver, and adjusting the retraction height is more troublesome.

[0005] At the same time, the cantilever and fixed part design of some existing retractors are not flexible enough, which often leads to poor compatibility between the cantilever of the retractor and other equipment when used in conjunction, which may interfere with each other or affect the convenience of operation. Another part of the retractor design has an adjustable cantilever, such as a liver retractor and its components disclosed in Patent No. CN202740054U, which adopts a multi-stage connecting rod rotation connection method, and the connecting rod can rotate in all directions and at any angle. The excessive degree of freedom between the connecting rods can easily lead to loose fixation, etc. Based on this, a gastrointestinal surgical auxiliary device is proposed. Summary of the Invention

[0006] The present invention aims to provide a gastrointestinal surgical auxiliary device to solve the problems that the retractor is not suitable for minimally invasive surgery, the adjustment of the retractor height is troublesome, and the fixed cantilever thereof is poorly compatible or loosely fixed when used in conjunction with other equipment.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] The cam is fixed on the base and is fixed with a lifting mechanism, and the cam is fixed with a lifting mechanism, and the cam is fixed with a key adapter, and the key adapter is a buckle.

[0009] Furthermore, the base includes two first optical axes arranged in parallel between the two side rail fixers, a sliding fixing assembly is provided on the first optical axis, and a vertical axis is fixedly provided on the sliding fixing assembly.

[0010] Furthermore, the cantilever includes a transverse axis and a telescopic axis, one end of the transverse axis is connected to the vertical axis through a sliding fixing assembly, and the end of the transverse axis away from the vertical axis is hinged to the telescopic axis, so that the telescopic axis swings left and right.

[0011] Furthermore, the telescopic axis includes a second optical axis and a third optical axis that are arranged parallel to each other, and the second optical axis and the third optical axis are fixedly connected by a sliding fixing assembly.

[0012] Furthermore, the sliding fixing assembly includes a shell, a sliding core and a rotating rod. The shell is provided with an axial hole for accommodating the shaft. The inside of the shell is provided with a sliding core that presses against the shaft. The sliding core and the rotating rod form a threaded connection relationship.

[0013] Furthermore, the transmission assembly includes a knob, a first transmission shaft, a second transmission shaft and a third transmission shaft. The knob is arranged at the end of the housing of the traction assembly away from the supporting claw. The first transmission shaft and the knob form an axial connection relationship. The second transmission shaft and the third transmission shaft are respectively connected to the supporting claw. The first transmission shaft, the second transmission shaft and the third transmission shaft are all installed parallel to each other in the housing of the traction assembly. The first transmission shaft and the second transmission shaft are transmitted by gear meshing, and the second transmission shaft and the third transmission shaft are transmitted by a pair of gears of the same size.

[0014] Furthermore, the hexagonal sleeve assembly includes an inner hexagonal sleeve and an outer hexagonal cam, the inner hexagonal sleeve is arranged at the ends of the second transmission shaft and the third transmission shaft, the outer hexagonal cam is arranged at one end of the claw, the inner hexagonal sleeve and the outer hexagonal cam form a socket relationship, the outer hexagonal cam is provided with a spring point, and a groove is provided in the inner hexagonal sleeve, and the spring point enters the groove to axially fix the inner hexagonal sleeve and the outer hexagonal cam.

[0015] Furthermore, a sliding fixing component is provided on the side of the fastening sleeve.

[0016] Furthermore, the auxiliary device is entirely made of medical-grade stainless steel.

[0017] The principle and beneficial effects of this technical solution:

[0018] 1. The present invention adopts a traction component with expandable claws, and realizes the expansion and aggregation functions by making the two claws rotate in opposite directions through the transmission mechanism. Before traction, the claws are aggregated by turning the knob on the transmission component to facilitate entry into the incision. After entering the incision, the knob is turned to make the claws rotate in opposite directions to expand. Since the claws are Z-shaped, the lifting part is placed under the liver. When expanding, since the lifting part bends outward, the lifting part rotates around the connecting axis, so that the claws also have the ability to lift upward. By increasing the expansion lifting area, the liver is lifted upward, reducing the number of times the traction component and the cantilever angle are adjusted, and more surgical fields are exposed at the same time. The operation is simple and convenient for subsequent operations.

[0019] 2. The present invention adopts a hexagonal sleeve assembly to connect the claw to the traction assembly, and uses an inner hexagonal sleeve and an outer hexagonal cam for connection to ensure that the claw will not rotate axially when rotating. At the same time, a spring point is set for connection, which is convenient for disassembly and separate disinfection.

[0020] 3. The cantilever design adopted by the present invention can be flexibly adjusted according to changes in the position and state of the liver while taking into account stability, meeting the visual field requirements of different surgeries, and reducing the occurrence of mutual interference or impact on operations when used in conjunction with other equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an overall schematic diagram of a gastrointestinal surgical assisting device;

[0022] Figure 2 A cross-sectional view of a sliding fixation assembly of a gastrointestinal surgical assisting device;

[0023] Figure 3 This is an overall schematic diagram of a retraction device of a gastrointestinal surgical auxiliary device;

[0024] Figure 4A cross-sectional view of a retractor device of a gastrointestinal surgical assist device;

[0025] Figure 5 This is a partial schematic diagram of a hexagonal sleeve assembly of a gastrointestinal surgical auxiliary device.

[0026] The reference numerals in the drawings of the specification include:

[0027] 1. Base; 101. First optical axis; 2. Vertical axis; 3. Cantilever; 301. Horizontal axis; 302. Telescopic axis; 3021. Second optical axis; 3022. Third optical axis; 4. Traction assembly; 401. Shell; 402. Claw; 4021. Connecting shaft; 4022. Lifting part; 403. Transmission assembly; 4031. Knob; 4032. First transmission shaft; 4033. Second transmission shaft; 4034. Third transmission shaft; 404. Hexagonal socket assembly; 4041. Inner hexagonal socket; 4042. Outer hexagonal cam; 4043. Spring point; 4044. Groove; 5. Side rail holder; 6. Fastening sleeve; 7. Sliding fixing assembly; 701. Shell; 702. Sliding core; 703. Rotary rod; 704. Axis hole. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0029] refer to Figures 1 to 5 A gastrointestinal surgical auxiliary device is made of medical-grade stainless steel as a whole, including a base 1, a vertical axis 2, a cantilever 3 and a traction component 4. Side rail fixers 5 are respectively provided on both sides of the base 1. The rail fixer is a universal fixing part of an operating table that can be fixed on the side rail of the operating table. The provision of at least two side rail fixers 5 can enable the present invention to be firmly fixed on the operating table. At the same time, in order to ensure that the present invention does not affect the operation of the surgeon, it should be fixed to the side of the head or tail of the operating table.

[0030] The base 1 includes a first optical axis 101, and the two first optical axes 101 are arranged parallel between the two side rail holders 5. The two ends of the first optical axis 101 are fixed to the side rail holder 5 by drilling threaded holes and fastening bolts. The first optical axis 101 is provided with a sliding fixing component 7. Figure 2The sliding fixing assembly 7 includes a shell 701, a sliding core 702 and a rotary rod 703. The shell 701 is provided with an axial hole 704 for accommodating the shaft. The inside of the shell 701 is provided with a sliding core 702 that presses against the shaft. The sliding core 702 and the rotary rod 703 form a threaded connection relationship. The rotary rod 703 is T-shaped and is easier to rotate. When the first optical axis 101 passes through the axial hole 704, the sliding core 702 and the rotary rod 703 form a threaded connection relationship. When the rotary rod 703 is rotated, the sliding core 702 will press against the first optical axis 101 under the action of the thread to achieve the purpose of fixing. In order to ensure a firm fixation, a material with a large friction coefficient such as rubber can be provided on the contact surface between the sliding core 702 and the shaft to make it more firmly fixed. Correspondingly, when the sliding core 702 slides in the opposite direction under the action of the thread, the fixation is released and the sliding fixing assembly 7 can slide relative to the first optical axis 101. The sliding fixing assemblies 7 described below in the present invention all adopt this structure. It is worth noting that the sliding fixing assembly 7 described in the present invention is a fixing device that can slide or be fixed relative to the shaft. In addition to the structure disclosed in the present invention, other devices with the same function in the prior art can also be used to achieve the same effect.

[0031] A vertical shaft 2 is fixedly provided on the sliding fixing assembly 7. The vertical shaft 2 is cylindrical and stands upright on the sliding fixing assembly 7. It forms a fixed left-right sliding connection relationship with the base 1. After the base 1 is fixed to the operating table through the side rail fixer 5, the relative position of the vertical shaft 2 can be partially changed by adjusting the sliding fixing assembly 7 without removing the side rail fixer 5 and re-fixing it, thereby simplifying the adjustment process.

[0032] The cantilever 3 is fixed on the vertical shaft 2, and forms a fixed up and down sliding connection relationship with the vertical shaft 2. The cantilever 3 includes at least one bending capability and at least one telescopic capability. The cantilever 3 includes a transverse axis 301 and a telescopic axis 302. One end of the transverse axis 301 is connected to the vertical shaft 2 through a sliding fixing component 7. It is worth noting that since the vertical shaft 2 is a cylindrical axis, the transverse axis 301 can slide up and down relative to the vertical shaft 2 through the sliding fixing component 7, and can also rotate relative to the vertical shaft 2. The end of the transverse axis 301 away from the vertical shaft 2 forms a hinged relationship with the telescopic axis 302, so that the telescopic axis 302 swings left and right. Among them, the hinged part should have a rotation adjustment function and a fixing function, and can be fixed or adjusted by screwing bolts or fixing with pins. The telescopic shaft 302 includes a second optical axis 3021 and a third optical axis 3022. The second optical axis 3021 and the third optical axis 3022 are arranged parallel to each other and fixedly connected by a sliding fixing assembly 7. Specifically, the second optical axis 3021 is fixed to both sides of the sliding fixing assembly 7, and the third optical axis 3022 passes through the axial hole 704 of the sliding fixing assembly 7. The telescopic ability is achieved by changing the relative position of the third optical axis 3022 and the axial hole 704. The telescopic shaft 302 can also be an electric or other manual telescopic device. The horizontal axis 301 cooperates with the telescopic shaft 302 to allow the front end of the telescopic shaft 302 to be adjusted to fall above the required traction. It is worth noting that the horizontal axis 301 and the telescopic shaft 302 in the present invention can also be used in multiple combinations, such as two sections of the horizontal axis 301 combined with one section of the telescopic shaft 302, or two sections of the telescopic shaft 302 combined with one section of the horizontal axis 301, to adapt to different needs and obtain higher flexibility.

[0033] A fastening sleeve 6 is provided at one end of the cantilever 3 away from the vertical axis 2. The fastening sleeve 6 and the cantilever 3 form an articulated relationship for vertical rotation. A traction assembly 4 is sleeved on the fastening sleeve 6. The traction assembly 4 and the fastening sleeve 6 form a fixed vertical sliding connection via a sliding fixing assembly 7 provided on the side of the fastening sleeve 6. The fastening sleeve 6 and the cantilever 3 form an articulated relationship for vertical rotation, which enables the traction assembly 4 fixed in the fastening sleeve 6 to rotate vertically relative to the cantilever 3 by a certain angle. It is worth noting that a fastener can be used to tighten the fastening sleeve 6 and the cantilever 3 at the hinge or a certain damping can be provided at the hinge to fix the rotation angle. At the same time, the fastening sleeve 6 and the traction assembly 4 form a fixed vertical sliding connection, which enables the traction assembly 4 to adjust the height and angle of lifting the liver, thereby improving its traction flexibility.

[0034] refer to Figures 3 and 4The traction assembly 4 includes a shell 401 and a claw 402. A transmission mechanism is installed inside the shell 401. The claw 402 is Z-shaped and includes a connecting shaft 4021 and a lifting portion 4022. The connecting shaft 4021 is installed on the transmission mechanism through a hexagonal sleeve assembly 404. The lifting portion 4022 is bent outward. The two claws 402 rotate in opposite directions with each other through the transmission mechanism so that the lifting portion 4022 is opened or gathered under the rotation of the connecting shaft 4021. The transmission assembly 403 includes a knob 4031, a first transmission shaft 4032, a second transmission shaft 4033 and a third transmission shaft 4034. The button 4031 is arranged at one end of the housing 401 of the traction assembly 4 away from the claw 402, the first transmission shaft 4032 and the knob 4031 are axially connected, the second transmission shaft 4033 and the third transmission shaft 4034 are respectively connected to the claw 402, the first transmission shaft 4032, the second transmission shaft 4033 and the third transmission shaft 4034 are all installed parallel to each other in the housing 401 of the traction assembly 4, the first transmission shaft 4032 and the second transmission shaft 4033 are transmitted by gear meshing, and the second transmission shaft 4033 and the third transmission shaft 4034 are transmitted by a pair of gear meshing of the same size. When in use, first install the traction assembly 4 on the fastening sleeve 6 of the cantilever 3 at a certain angle, and by rotating the knob 4031, the first transmission shaft 4032 drives the second transmission shaft 4033 to rotate under the action of the gear. The gear transmission ratio here can be individually designed according to actual needs. Then, the second transmission shaft 4033 and the third transmission shaft 4034 are meshed and transmitted through a pair of gears of the same size. The pair of gears between the second transmission shaft 4033 and the third transmission shaft 4034 must be of the same size to ensure connection. The claws 402 on the second transmission shaft 4033 and the third transmission shaft 4034 rotate at the same angular velocity to open or gather. When gathering, the lifting parts of the two claws 402 are rotated to the bottom of the connecting shaft 4021, and the two claws 402 are gathered and merged to facilitate entry into the wound. After entering the wound, the claws 402 are inserted into the gap at the bottom of the liver. At this time, the knob 4031 is turned, and the two claws 402 are reversed with each other and opened relatively. At the same time, since the lifting parts are bent outward, the lifting parts of the two claws 402 rotate upward to lift the liver.

[0035] refer to Figure 5The hexagonal socket assembly 404 includes an inner hexagonal socket 4041 and an outer hexagonal cam 4042. The inner hexagonal socket 4041 is arranged at the ends of the second transmission shaft 4033 and the third transmission shaft 4034, and the outer hexagonal cam 4042 is arranged at one end of the claw 402. The inner hexagonal socket 4041 and the outer hexagonal cam 4042 form a socket relationship, and a spring point 4043 is provided on the outer hexagonal cam 4042. The spring point 4043 axially fixes the inner hexagonal socket 4041 and the outer hexagonal cam 4042. A hexagonal sleeve assembly 404 is used to connect the supporting claw 402 to the traction assembly 4, and an inner hexagonal sleeve 4041 and an outer hexagonal cam 4042 are used for connection to ensure that the supporting claw 402 does not rotate axially when rotating. At the same time, a spring point 4043 is set for connection. When the inner hexagonal sleeve 4041 and the outer hexagonal cam 4042 are socketed, the spring point 4043 is pressed down to facilitate socketing. After socketing, the spring point 4043 is stuck in the groove 4044 set in the inner hexagonal sleeve 4041 for fixation. When disassembly is required, it only needs to be pulled out with force. It is easy to disassemble and assemble, and it is convenient to disassemble the supporting claw 402 for separate disinfection.

[0036] The cantilever 3 of the present invention adjusts its height by moving the horizontal axis 301 up and down relative to the vertical axis 2. The entire cantilever 3 does not have a kinematic pair that bends relatively up and down, so that the front end of the entire cantilever 3 can reach above the wound while having stability without bending. At the same time, since the front end of the cantilever 3 can be directly delivered to the top of the wound, the claw 402 can pull and lift the liver from the top, leaving surrounding space for the surgeon to operate other surgical instruments, thereby reducing mutual interference or influence on operation when used in coordination with other equipment.

[0037] In addition, the present invention uses a transmission mechanism to make the two claws 402 rotate in opposite directions to each other to complete the opening and aggregation functions. Before traction, the claws 402 are aggregated by rotating the knob 4031 on the transmission component 403, which facilitates entry into the smaller incision in minimally invasive surgery. After entering the incision, the knob 4031 is rotated to make the claws 402 rotate in opposite directions to open. Since the claws 402 are Z-shaped, the lifting part 4022 is placed under the liver. When opening, since the lifting part 4022 is bent outward, the lifting part 4022 rotates around the connecting shaft 4021, so that the claws 402 also have the ability to lift upward. While increasing the support area, the liver is lifted upward, reducing the number of times the angle of the traction component 4 and the cantilever 3 is adjusted, and at the same time more surgical fields are exposed. The operation is simple, and subsequent operations are convenient, and it has certain application prospects.

[0038] The above is only an embodiment of the present invention, and the common knowledge such as the specific technical solutions and / or characteristics in the solution are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the description can be used to interpret the content of the claims.

Claims

1. A gastrointestinal surgical assisting device, characterized in that: The invention comprises a base (1), a vertical shaft (2), a cantilever (3) and a traction assembly (4), wherein side rail fixers (5) are respectively provided on both sides of the base (1), the vertical shaft (2) is erected on the base (1), and forms a fixed left-right sliding connection relationship with the base (1), the cantilever (3) is fixed on the vertical shaft (2), and forms a fixed up-down sliding connection relationship with the vertical shaft (2), the cantilever (3) includes at least one bending capability and at least one telescopic capability, and a fastening sleeve (6) is provided at one end of the cantilever (3) away from the vertical shaft (2), and the fastening sleeve (6) and the cantilever (3) form a hinged connection for vertical rotation. The fastening sleeve (6) is provided with a traction assembly (4) sleeved therein, the traction assembly (4) comprising a shell (401) and a supporting claw (402), a transmission mechanism being installed inside the shell (401), the supporting claw (402) being Z-shaped and comprising a connecting shaft (4021) and a supporting portion (4022), the connecting shaft (4021) being installed on the transmission mechanism via a hexagonal sleeve assembly (404), the supporting portion (4022) being bent outward, and the two supporting claws (402) being rotated in opposite directions by the transmission mechanism so that the supporting portion (4022) is opened or closed under the rotation of the connecting shaft (4021).

2. A gastrointestinal surgical assisting device according to claim 1, characterized in that: The base (1) comprises two first optical axes (101) arranged in parallel between two side rail fixers (5); a sliding fixing assembly (7) is arranged on the first optical axis (101); and a vertical axis (2) is fixedly arranged on the sliding fixing assembly (7).

3. The gastrointestinal surgical assisting device according to claim 1, characterized in that: The cantilever (3) comprises a transverse axis (301) and a telescopic axis (302); one end of the transverse axis (301) is connected to the vertical axis (2) via a sliding fixing assembly (7); and one end of the transverse axis (301) away from the vertical axis (2) forms a hinged relationship with the telescopic axis (302), so that the telescopic axis (302) can swing left and right.

4. A gastrointestinal surgical assisting device according to claim 3, characterized in that: The telescopic shaft (302) comprises a second optical axis (3021) and a third optical axis (3022) arranged parallel to each other, and the second optical axis (3021) and the third optical axis (3022) are fixedly connected via a sliding fixing assembly (7).

5. A gastrointestinal surgical assisting device according to claims 1-4, characterized in that: The sliding fixing assembly (7) comprises a housing (701), a sliding core (702) and a rotating rod (703); the housing (701) is provided with an axial hole (704) for accommodating a shaft; the housing (701) is provided with a sliding core (702) pressed against the shaft; the sliding core (702) and the rotating rod (703) are in a threaded connection relationship.

6. The gastrointestinal surgical assisting device according to claim 1, characterized in that: The transmission assembly (403) comprises a knob (4031), a first transmission shaft (4032), a second transmission shaft (4033) and a third transmission shaft (4034); the knob (4031) is arranged at one end of the housing (401) of the traction assembly (4) away from the supporting claw (402); the first transmission shaft (4032) and the knob (4031) form an axial connection; the second transmission shaft (4033) and the third transmission shaft (4034) are respectively connected to the supporting claw (402); the first transmission shaft (4032), the second transmission shaft (4033) and the third transmission shaft (4034) are all installed in parallel with each other in the housing (401) of the traction assembly (4); the first transmission shaft (4032) and the second transmission shaft (4033) are driven by gear meshing; the second transmission shaft (4033) and the third transmission shaft (4034) are driven by a pair of gear meshing of the same size.

7. The gastrointestinal surgical assisting device according to claim 6, characterized in that: The hexagonal sleeve assembly (404) comprises an inner hexagonal sleeve (4041) and an outer hexagonal convex shaft (4042); the inner hexagonal sleeve (4041) is arranged at the ends of the second transmission shaft (4033) and the third transmission shaft (4034); the outer hexagonal convex shaft (4042) is arranged at one end of the claw (402); the inner hexagonal sleeve (4041) and the outer hexagonal convex shaft (4042) form a sleeve-jointed relationship; the outer hexagonal convex shaft (4042) is provided with an elastic point (4043); a groove (4044) is provided in the inner hexagonal sleeve (4041); the elastic point (4043) enters the groove (4044) to axially fix the inner hexagonal sleeve (4041) and the outer hexagonal convex shaft (4042).

8. The gastrointestinal surgical assisting device according to claim 5, characterized in that: A sliding fixing assembly (7) is provided on the side of the fastening sleeve (6).

9. The gastrointestinal surgical assisting device according to claim 1, characterized in that: The auxiliary device is made entirely of medical-grade stainless steel.

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