A transsphenoidal pituitary tumor surgery cradle

Abstract

The application discloses a pituitary tumor surgery saddle diaphragm spreader, which comprises an operating rod, a spread execution element and an arm lifting spread driving mechanism, the operating rod comprises a first rod part, a second rod part and an arc transition section, the first rod part is connected with the second rod part through the arc transition section; the spread execution element comprises a connecting block, two spread arms and two spread rings; the arm lifting spread driving mechanism is connected at the tail end of the first rod part, can drive the arc transition section to bend and deform, and can drive the connecting block to move along the axial direction of the second rod part through the operating rod, so that the two spread arms are driven to open or close. The pituitary tumor surgery saddle diaphragm spreader solves the problems of high artificial operation requirement, reduction of secondary damage of the instrument itself to the patient, low controllability precision and complicated replacement process of the support instrument in the existing technology in the sphenoid operation.

Description

TECHNICAL FIELD

[0001] The present application relates to a surgical retractor, in particular to a saddle diaphragm retractor for pituitary tumor surgery. BACKGROUND

[0002] Pituitary tumor is derived from pituitary tissue below the sella diaphragm in the sella turcica region. When the pituitary tumor gradually increases, the sella diaphragm will also be gradually stretched and expanded forward, upward and backward with the increase of the pituitary tumor, forming a bag-like structure to wrap the pituitary tumor. At present, the conventional method of pituitary tumor surgery is to resect under the endoscope of the nasal sphenoid nerve. During the operation, with the step-by-step resection of the tumor, the sella diaphragm in the front and upper direction also gradually collapses downward and backward, and the sella diaphragm in the rear and lower direction moves forward and upward. Due to the obstruction of the top tumor, the uppermost sella diaphragm is difficult to collapse, and often forms an inverted flask-like bag with a large bottom and a small mouth. In order to resect the tumor in the bag, the surgeon often uses a suction head or a ring-shaped scraper with a cotton sheet to push the sella diaphragm collapsed in the front direction, but the effect of displaying the tumor at the bottom of the bag is not good. Not only the tumor cannot be completely resected, but also the sella diaphragm rupture is easy to induce a fatal risk of cerebrospinal fluid leakage.

[0003] The prior art such as Chinese patent (patent publication number: CN 108670323 A) discloses a saddle diaphragm retractor, which mainly comprises a sleeve, a hollow rod, a support rod, a support ring and a force scissors. When the technical scheme is used to support the saddle diaphragm in the nasal sphenoid surgery, the working principle is as follows: the force scissors in the form of scissors is manually clamped and forced, one end of the support rod is fixedly connected to the force scissors, the other end of the support rod is connected to the support ring and penetrates through the hollow rod, one end of the hollow rod is also fixedly connected to the shear arm in the force scissors, and the other part is hinged. By forcing the force scissors, the support rod is supported to the required length of the support ring to support the saddle diaphragm tissue, thereby achieving the effect of supporting the saddle diaphragm tissue, and the shear arm in the force scissors is self-locked by the limiting structure. The limiting structure is used to control the opening and closing angle of the two shear arms, and the limiting structure is in the form of a tooth hook. In this way, the extension length of the support rod is controlled by the opening and closing angle of the shear arm to achieve self-locking, and the support arm of the arc segment outer wall hooks the sella turcica bone of the patient's skull base.

[0004] However, in the technical solution provided by the patent, the support ring and the support rod are connected at a 90° right angle, and the first straight segment and the second straight segment are connected by an arc segment, wherein the arc segment has a fixed curvature. Combined with the support ring and the support rod being connected at a 90° right angle, the working area for expanding the sellar diaphragm is limited. If it is necessary to go deeper to perform expansion operations, the range of motion of the manual handheld part needs to be increased. However, the range of motion of the instrument entry part of the nose butterfly surgery is limited, resulting in a small range of expansion of the sellar diaphragm by the device, causing the device to only be able to support operations in limited positions. If support of the sellar diaphragm in other positions is required, it is necessary to replace the arc segment device with a different curvature, which is a cumbersome process. The support arm hooks the sellar base bone of the patient's skull base to support the device and the supported sellar diaphragm, which is actually very difficult because the sellar base bone is damaged to varying degrees during tumor growth, becoming flat or uneven, making it difficult for the support arm to hook firmly. In addition, the extension length of the locking support rod from the tooth hook of the limiting structure is determined by the distance between the tooth hooks, which is equivalent to one length for each tooth hook. If a slightly smaller or larger extension support length is required, the length of the device entering the nasal cavity must be manually controlled. This requires high precision in manual hand control and higher requirements for manual operation. The technical solution of the operation process itself has low controllability. If the instrument size needs to be changed, the process is cumbersome, which increases the operation time. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the technical problem to be solved by the present invention is to provide a sellar diaphragm expander for pituitary tumor surgery, which solves the problems of the existing technology in that the manual operation requirements for supporting the sellar diaphragm tissue during nasal sphenoidal surgery are high, the controllability accuracy is low, and the surgical process of replacing the supporting instrument is cumbersome.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solution: a sellar diaphragm expander for pituitary tumor surgery, comprising:

[0007] An operating rod, the operating rod comprising a first rod portion, a second rod portion and an arcuate transition section, wherein the first rod portion and the second rod portion are connected by the arcuate transition section; and the arcuate transition section can be bent and deformed when subjected to force;

[0008] A spreading actuator, comprising a connecting block, two spreading arms, and two spreading rings. The connecting block is provided at the end of the second rod portion and can move axially along the second rod portion. The spreading arms are L-shaped, and the two spreading arms are buckled. One end of each of the two spreading arms is hinged to the outer wall of the connecting block, and the other end of each of the two spreading arms is provided with one of the spreading rings.

[0009] The lifting arm opening driving mechanism is connected to the tail end of the first rod part, can drive the curved deformation of the arc-shaped transition section, and can drive the axial movement of the connecting block along the second rod part through the operating rod, so as to drive the opening or closing of the two opening arms;

[0010] The arc-shaped transition section comprises an arc-shaped connecting pipe, a first U-shaped connecting frame, a second U-shaped connecting frame, a first connecting rod, a second connecting rod and a push-pull rod. The arc-shaped connecting pipe is an elastic pipe, and the two ends of the arc-shaped connecting pipe are connected with the first rod part and the second rod part respectively. The first U-shaped connecting frame, the second U-shaped connecting frame, the first connecting rod, the second connecting rod and the push-pull rod are located in the arc-shaped connecting pipe. The first connecting rod and the second connecting rod are cross-connected, the first connecting rod is connected between the two vertical ends of the first U-shaped connecting frame, the second connecting rod is connected between the two vertical ends of the second U-shaped connecting frame, the horizontal end of the first U-shaped connecting frame is sleeved with the end of the first rod part and can slide along the axial direction of the first rod part, the horizontal end of the second U-shaped connecting frame is fixedly connected with the end of the second rod part, and one end of the push-pull rod is hingedly connected with the end of the first rod part and the other end is hingedly connected with the second connecting rod.

[0011] The lifting arm opening driving mechanism comprises a lifting arm driving assembly and an opening driving assembly. The lifting arm driving assembly is connected with the first rod part through the opening driving assembly and can drive the curved deformation of the arc-shaped transition section. The lifting arm driving assembly and the opening driving assembly can drive the axial movement of the connecting block along the second rod part through the operating rod, so as to drive the opening or closing of the two opening arms.

[0012] The lifting arm driving assembly comprises a handle, a lifting arm knob, a connecting pipe, a first planetary gear set, a conducting column, a first connecting plate, a second connecting plate and a lifting arm rod.

[0013] The handle, the lifting arm knob and the connecting pipe are annular bodies and are coaxially arranged and can be rotatably connected with each other. The connecting pipe is rotatably connected with the opening driving assembly.

[0014] The inner wall of the lifting arm knob is provided with a first internal gear. The first planetary gear set comprises a first sun gear and a plurality of first planetary gears. The first sun gear is coaxially arranged in the lifting arm knob. The plurality of first planetary gears are circumferentially spaced between the first sun gear and the lifting arm knob and are in mesh with the first internal gear. The first connecting plate and the second connecting plate are respectively located on the two sides of the first planetary gear set and are rotatably connected with the two ends of the first planetary gear through a first conducting column. One end of the lifting arm rod is fixedly connected with the second connecting plate, and the other end is rotatably connected with the first rod part through the opening driving assembly.

[0015] The distraction driving assembly comprises a distraction knob, a second planetary reduction gear set, a third connecting plate and a fourth connecting plate, the distraction knob is coaxially arranged with the connecting pipe and is rotatably connected, a second inner tooth is arranged on the inner wall of the distraction knob, the second planetary reduction gear set comprises a second sun gear and a plurality of second planetary gears, the second sun gear is coaxially arranged in the distraction knob, a plurality of second planetary gears are circumferentially spaced between the second sun gear and the distraction knob, and are all meshed with the second inner tooth, the third connecting plate and the fourth connecting plate are respectively located on both sides of the second planetary reduction gear set, and the two ends of the second planetary gear are rotatably connected with the third connecting plate and the fourth connecting plate through a second transmission column; the lifting arm rod is sequentially fixed on the second connecting plate after passing through the fourth connecting plate, the second sun gear and the third connecting plate.

[0016] Further, the first rod part comprises a first shell, a limiting sleeve, a connecting rod and a first threaded rod, one end of the first shell is rotatably connected with the distraction knob, the other end of the first shell is fixedly connected with the end of the arc-shaped connecting pipe, the limiting sleeve, the connecting rod and the first threaded rod are all located in the first shell, the limiting sleeve is fixedly connected with the fourth connecting plate, the lifting arm rod rotatably passes through the limiting sleeve, one end of the first threaded rod is threadedly connected with the end of the lifting arm rod, the other end of the first threaded rod is rotatably clamped with the connecting rod, the other end of the connecting rod is slidably sleeved with the transverse section of the first U-shaped connecting frame, the outer walls of the two ends of the connecting rod are respectively provided with a first sliding groove and a second sliding groove along the axial direction thereof, a limiting rod is arranged on the inner wall of the limiting sleeve away from the fourth connecting plate, and protrusions are arranged on the transverse section of the first U-shaped connecting frame, the limiting rod and the protrusions are respectively slidably clamped with the first sliding groove and the second sliding groove.

[0017] Further, the second rod part comprises a second shell, a transmission rod, a second threaded rod and a force rod, one end of the second shell is connected with the arc-shaped connecting pipe, the transmission rod is inserted into the second shell, one end of the transmission rod is fixedly connected with the transverse end of the second U-shaped connecting frame, the second threaded rod is connected at the other end of the transmission rod, the connecting block is threadedly connected with the second threaded rod, the force rods are arranged at the bending positions of the two distraction arms, and the two force rods are rotatably connected with the inner wall of the second shell.

[0018] Further, the lifting arm driving assembly further comprises a first damping assembly connected between the lifting knob and the connecting pipe, for applying damping force to the rotation of the lifting knob.

[0019] Furthermore, the first damping assembly includes a damping plate and an elastic connecting member, and there are two elastic connecting members, one end of the two elastic connecting members is respectively connected to the left and right sides of one end of the damping plate, and the other end of the two elastic connecting members is fixedly connected to the inner wall of the arm lifting knob, and the first damping teeth are circumferentially arranged on the connecting tube near one end of the arm lifting knob, and the end of the other end of the damping plate is inserted between the two adjacent first damping teeth, and when the arm lifting knob rotates, the damping plate can rotate accordingly.

[0020] Furthermore, the expansion drive assembly further includes a second damping assembly, which is arranged between the expansion knob and the connection and is used to apply a damping force to the rotation of the expansion knob.

[0021] Beneficial effects of the present invention:

[0022] When using the above-mentioned diaphragm spreader for pituitary tumor surgery, the user holds the arm-lifting and stretching driving mechanism, inserts the stretching actuator through the nostrils via the operating rod, and stretches the relatively collapsed diaphragm spreader group via the two stretching rings, and then performs the relevant surgery. During use, the arm-lifting and stretching driving mechanism can drive the arc-shaped transition section to bend and deform, so that the second rod portion can swing at a certain angle in a plane within a controllable range, thereby increasing the number of positions where the diaphragm spreader can be supported, and ultimately improving the practical performance of the entire diaphragm spreader. At the same time, the arm-lifting and stretching driving mechanism can be operated to drive the connecting block to move along the axial direction of the second rod portion via the operating rod, thereby driving the two stretching arms to open or close, so that the angle of the diaphragm spreader supported by the stretching ring can be adjusted and precisely controlled, thereby preventing excessive support from damaging the diaphragm spreader tissue. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the specific embodiments. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0024] Figure 1 A schematic diagram of a diaphragm spreader for pituitary tumor surgery provided by one embodiment of the present invention;

[0025] Figure 2 for Figure 1 Schematic diagram of a pituitary tumor surgery in which a sellar diaphragm spreader is used to remove the relevant shell;

[0026] Figure 3 for Figure 1 A schematic diagram of a spreading actuator in a diaphragm spreader for pituitary tumor surgery is shown;

[0027] Figure 4 for Figure 1 A schematic diagram of an arc-shaped transition section in a sellar diaphragm expander for pituitary tumor surgery is shown;

[0028] Figure 5 Fig. 6 is a schematic view of a first damping assembly of the pituitary tumor surgery sphenoid space dilator according to the present application; Figure 1 Fig. 7 is a schematic view of a second damping assembly of the pituitary tumor surgery sphenoid space dilator according to the present application;

[0029] Figure 6 Fig. 8 is a schematic view of a second damping assembly of the pituitary tumor surgery sphenoid space dilator according to the present application; Figure 1 Fig. 9 is a schematic view of a second damping assembly of the pituitary tumor surgery sphenoid space dilator according to the present application;

[0030] Figure 7 Fig. 10 is a schematic view of a first damping assembly of the pituitary tumor surgery sphenoid space dilator according to the present application; Figure 1 Fig. 11 is a schematic view of a first damping assembly of the pituitary tumor surgery sphenoid space dilator according to the present application;

[0031] Figure 8 Fig. 12 is a schematic view of a first damping assembly of the pituitary tumor surgery sphenoid space dilator according to the present application; Figure 1 Fig. 13 is a schematic view of a first damping assembly of the pituitary tumor surgery sphenoid space dilator according to the present application;

[0032] Figure 9 Fig. 14 is a schematic view of a first damping assembly of the pituitary tumor surgery sphenoid space dilator according to the present application; Figure 1 Fig. 15 is a schematic view of a first damping assembly of the pituitary tumor surgery sphenoid space dilator according to the present application;

[0033] Reference signs:

[0034] 100, operating rod;

[0035] 110, first rod part; 111, first housing; 112, limiting sleeve; 1121, limiting rod; 113, connecting rod; 1131, first sliding groove; 1132, second sliding groove; 114, first threaded rod;

[0036] 120, second rod part; 121, second housing; 122, transmission rod; 123, second threaded rod; 124, force rod;

[0037] 130, arc-shaped transition section; 131, arc-shaped connecting pipe; 132, first U-shaped connecting frame; 133, second U-shaped connecting frame; 134, first connecting rod; 135, second connecting rod; 136, push-pull rod;

[0038] 200, dilating execution element;

[0039] 210, connecting block; 211, ear post; 220, dilating arm; 230, dilating ring;

[0040] 300, arm-lifting dilating driving mechanism;

[0041] 310, lifting arm driving assembly; 311, handle; 3111, first damping tooth; 312, lifting arm knob; 3121, first inner tooth; 313, connecting pipe; 314, first planetary reduction gear set; 3141, first sun gear; 3142, first planet gear; 315, first conducting column; 316, first connecting plate; 317, second connecting plate; 318, lifting arm rod; 319, first bearing curved rod;

[0042] 320, distraction driving assembly; 321, distraction knob; 3211, second inner tooth; 322, second planetary reduction gear set; 3221, second sun gear; 3222, second planet gear; 323, third connecting plate; 324, fourth connecting plate; 325, second bearing curved rod; 326, second conducting column;

[0043] 330, first damping assembly; 331, damping plate; 332, elastic connecting piece;

[0044] 340, second damping assembly. DETAILED DESCRIPTION

[0045] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0046] Please refer to Figures 1 to 9 The present application provides a pituitary tumor surgery saddle distraction device, which comprises an operating rod 100, a distraction execution element 200 and a lifting arm distraction driving mechanism 300.

[0047] Please refer to Figure 1 and Figure 2 Specifically, the operating rod 100 comprises a first rod portion 110, a second rod portion 120 and an arc-shaped transition section 130. The first rod portion 110 and the second rod portion 120 are connected through the arc-shaped transition section 130, and the arc-shaped transition section 130 can be bent and deformed under stress.

[0048] Please refer to Figure 3 The distraction execution element 200 comprises a connecting block 210, two distraction arms 220 and two distraction rings 230. The connecting block 210 is arranged at the end of the second rod portion 120 and can move along the axial direction of the second rod portion 120. The distraction arms 220 are L-shaped, and the two distraction arms 220 are arranged in a clamping manner. The end of each of the two distraction arms 220 is hinged to the outer wall of the connecting block 210, and the other end of each of the two distraction arms 220 is provided with a distraction ring 230.

[0049] Please refer to Figure 1 and Figure 2The lifting arm opening driving mechanism 300 is connected to the tail end of the first rod part 110, can drive the curved deformation of the arc-shaped transition section 130, and can drive the axial movement of the connecting block 210 along the second rod part 120 through the operation rod 100, so as to drive the opening or closing of the two opening arms 220. It should be noted that, in the specific implementation, the hinge hole at the hinge between the opening arm 220 and the outer wall of the connecting block 210 should be a long strip-shaped U-shaped hole or a large circular hole, so that the opening arm 220 can rotate smoothly, thereby providing a moving space for the opening or closing of the opening arm 220.

[0050] In use, the lifting arm opening driving mechanism 300 is held by hand, the opening execution element 200 is extended into the nostril through the operation rod 100, and the opposite collapsed diaphragm is opened through the two opening rings 230, so that the related operation can be performed. During use, the lifting arm opening driving mechanism 300 can drive the curved deformation of the arc-shaped transition section 130, so that the second rod part 120 can perform a certain angle swing in a plane within a controllable range, thereby increasing the number of positions that can be opened by the diaphragm, and finally improving the practical performance of the entire diaphragm opener. At the same time, the lifting arm opening driving mechanism 300 can be operated to drive the axial movement of the connecting block 210 along the second rod part 120 through the operation rod 100, so as to drive the opening or closing of the two opening arms 220, thereby making the angle of the opening ring 230 opening the diaphragm adjustable and accurately controllable, and preventing the diaphragm tissue from being damaged by being opened too much.

[0051] Please refer to Figure 4 In the embodiment, the arc-shaped transition section 130 includes an arc-shaped connecting pipe 131, a first U-shaped connecting frame 132, a second U-shaped connecting frame 133, a first connecting rod 134, a second connecting rod 135, and a push-pull rod 136. The arc-shaped connecting pipe 131 is an elastic pipe, and the two ends of the arc-shaped connecting pipe 131 are connected with the first rod part 110 and the second rod part 120 respectively. The first U-shaped connecting frame 132, the second U-shaped connecting frame 133, the first connecting rod 134, the second connecting rod 135, and the push-pull rod 136 are located in the arc-shaped connecting pipe 131. The first connecting rod 134 and the second connecting rod 135 are cross-connected, and the first connecting rod 134 is connected between the two vertical ends of the first U-shaped connecting frame 132. The second connecting rod 135 is connected between the two vertical ends of the second U-shaped connecting frame 133, the horizontal end of the first U-shaped connecting frame 132 is sleeved with the end of the first rod part 110 and can slide along the axial direction of the first rod part 110. The horizontal end of the second U-shaped connecting frame 133 is fixedly connected with the end of the second rod part 120, one end of the push-pull rod 136 is hingedly connected with the end of the first rod part 110, and the other end is hingedly connected with the second connecting rod 135.

[0052] In the working process, the forward thrust and the backward pull of the first rod part 110 can push or pull the second rod part 120 forward or backward through the push-pull rod 136, so as to force the arc-shaped connecting pipe 131 to bend, drive the angle between the second rod part 120 and the first rod part 110 to change, and thus achieve the purpose of adjusting the position of the supporting saddle.

[0053] Please refer to Figure 1 and Figure 2 In the embodiment, the lifting arm supporting driving mechanism includes a lifting arm driving assembly 310 and a supporting driving assembly 320. The lifting arm driving assembly 310 is connected with the first rod part 110 through the supporting driving assembly 320, and can drive the arc-shaped transition section 130 to bend and deform in cooperation with each other, and drive the two supporting arms 220 to open or close in cooperation with each other by driving the connecting block 210 to move along the axial direction of the second rod part 120 through the operating rod 100.

[0054] Please refer to Figure 2 and Figure 5 Specifically, the lifting arm driving assembly 310 includes a handle 311, a lifting arm knob 312, a connecting pipe 313, a first planetary reduction gear set 314, a first transmission column 315, a first connecting plate 316, a second connecting plate 317 and a lifting arm rod 318.

[0055] The handle 311, the lifting arm knob 312 and the connecting pipe 313 are coaxially arranged in annular bodies and are rotatably connected with each other, and the connecting pipe 313 is rotatably connected with the supporting driving assembly 320. In the specific implementation, the handle 311 and the lifting arm knob 312 and the lifting arm knob 312 and the connecting pipe 313 are all connected by the way of clamping through the setting of the buckle groove and the buckle ring, which can realize the functions of connection and rotation, and is convenient to install.

[0056] Please refer to Figure 2 and Figure 5 The inner wall of the lifting arm knob 312 is provided with a first inner tooth 3121. The first planetary reduction gear set 314 includes a first sun gear 3141 and a plurality of first planetary gears 3142. The first sun gear 3141 is located in the lifting arm knob 312 and is coaxially arranged with the lifting arm knob 312, and the plurality of first planetary gears 3142 are circumferentially spaced between the first sun gear 3141 and the lifting arm knob 312 and are all engaged with the first inner tooth 3121. The first connecting plate 316 and the second connecting plate 317 are respectively located on the two sides of the first planetary reduction gear set 314 and are rotatably connected with the two ends of the first planetary gear 3142 through the first transmission column 315. One end of the lifting arm rod 318 is fixedly connected with the second connecting plate 317, and the other end is rotatably connected with the first rod part 110 through the supporting driving assembly 320.

[0057] In use, the user holds the handle 311 and rotates the lifting knob 312, which drives the first planetary gear 3142 and the first sun gear 3141 to rotate through the first internal gear teeth 3121, and then drives the second connecting plate 317 to rotate, which drives the lifting arm 318 to rotate. Since the lifting arm 318 is threadedly connected to the first rod portion 110, the first rod portion 110 is driven to move forward or backward, so as to adjust the included angle between the first rod portion 110 and the second rod portion 120, and finally adjust the position of the distraction ring 230.

[0058] In specific implementation, the lifting driving assembly 310 can further include a plurality of first bearing curved rods 319, which are circumferentially spaced apart on the first connecting plate 316. An annular first annular groove is formed in the inner wall of the handle 311, and the first bearing curved rods 319 are slidably clamped in the first annular groove.

[0059] The first bearing curved rods 319 can further connect the lifting knob 312 and the handle 311, and ensure the connection reliability between the lifting knob 312 and the handle 311. In addition, anti-slip patterns can be provided on the outside of the lifting knob 312 to facilitate operation.

[0060] Please refer to Figure 2 , Figure 5 and Figure 6 In this embodiment, the distraction driving assembly 320 includes a distraction knob 321, a second planetary gear set 322, a third connecting plate 323 and a fourth connecting plate 324. The distraction knob 321 is coaxially arranged with the connecting pipe 313 and can rotate. The inner wall of the distraction knob 321 is provided with second internal gear teeth 3211. The second planetary gear set 322 includes a second sun gear 3221 and a plurality of second planetary gears 3222. The second sun gear 3221 is coaxially arranged in the distraction knob 321, and the plurality of second planetary gears 3222 are circumferentially spaced apart between the second sun gear 3221 and the distraction knob 321 and are all engaged with the second internal gear teeth 3211. The third connecting plate 323 and the fourth connecting plate are respectively located on the two sides of the second planetary gear set 322, and the two ends of the second planetary gear 3222 are rotatably connected to the third connecting plate 323 and the fourth connecting plate through the second transmission column 326. The lifting arm 318 sequentially passes through the fourth connecting plate 324, the second sun gear 3221 and the third connecting plate 323 and is fixed on the second connecting plate 317.

[0061] When the distraction knob 321 is rotated, the second planetary gear set 322, the third connecting plate 323 and the fourth connecting plate 324 are driven to rotate. Since the second rod portion 120 is connected to the fourth connecting plate 324, the second rod portion 120 is driven to rotate, and the second rod portion 120 drives the first rod portion 110 to rotate.

[0062] In specific implementation, the distraction driving assembly 320 can further include a plurality of second bearing curved rods 325 which are circumferentially spaced and arranged on the third connecting plate 323, and a second annular groove is arranged on the inner wall of the connecting pipe 313 in an annular shape, and the second bearing curved rods 325 can be slidably arranged in the second annular groove.

[0063] Please refer to Figure 2 , Figure 5 and Figure 8 In the embodiment, the first rod part 110 includes a first shell 111, a limiting sleeve 112, a connecting rod 113 and a first threaded rod 114. One end of the first shell 111 is rotatably connected with the distraction knob 321, and the other end of the first shell 111 is fixedly connected with the end of the arc-shaped connecting pipe 131. The limiting sleeve 112, the connecting rod 113 and the first threaded rod 114 are all located in the first shell 111. The limiting sleeve 112 is fixedly connected with the fourth connecting plate 324, and the lifting arm rod 318 is rotatably arranged through the limiting sleeve 112. One end of the first threaded rod 114 is threadedly connected with the end of the lifting arm rod 318, and the other end of the first threaded rod 114 is rotatably clamped with the connecting rod 113. The other end of the connecting rod 113 is slidably sleeved with the transverse segment of the first U-shaped connecting frame 132. First and second sliding grooves 1131 and 1132 are respectively arranged on the outer walls of the two ends of the connecting rod 113 along the axial direction thereof. A limiting rod 1121 is arranged on the inner wall of the limiting sleeve 112 away from the fourth connecting plate 324. Protrusions are arranged on the transverse segments of the first U-shaped connecting frame 132. The limiting rod 1121 and the protrusions are respectively slidably clamped with the first and second sliding grooves 1131 and 1132.

[0064] In use, when the lifting arm knob 312 is rotated, since the first threaded rod 114 is threadedly connected with the lifting arm rod 318 and the first threaded rod 114 is rotatable with the connecting rod 113, when the lifting arm rod 318 is rotated, the first threaded rod 114 can be driven to advance or retreat due to the action of the limiting rod 1121, thereby driving the connecting rod 113 to advance or retreat, so that the angle between the first rod part 110 and the second rod part 120 can be changed. When the distraction knob 321 is driven, the limiting sleeve 112 is driven, and the connecting rod 113 is rotated, the second rod part 120 can be rotated through the connecting rod 113.

[0065] Here, it should be noted that in the present application, the length of the thread on the first threaded rod 114, the first and second sliding grooves 1131 and 1132, and the movable range of the second rod part 120 from the nasal cavity to the pituitary tumor position of the patient for surgery are determined by the movable range of the second rod part 120 from the nasal cavity to the pituitary tumor position of the patient for surgery.

[0066] Please refer to Figure 2 and Figure 3In the embodiment, the second rod part 120 comprises a second housing 121, a transmission rod 122, a second threaded rod 123 and a force rod 124. One end of the second housing 121 is connected with the arc-shaped connecting pipe 131. The transmission rod 122 is inserted into the second housing 121, one end of the transmission rod 122 is fixedly connected with the transverse end of the second U-shaped connecting frame 133, and the second threaded rod 123 is connected with the other end of the transmission rod 122, and the connecting block 210 is threadedly connected with the second threaded rod 123. The force rod 124 is arranged at the bending position of each of the two opening arms 220, and the two force rods 124 are rotatably connected with the inner wall of the second housing 121.

[0067] In use, when the lifting knob 312 is rotated, the angle between the first rod part 110 and the second rod part 120 is changed by the lifting rod 318, so that the position of the lifted diaphragm is changed, and the practical performance of the whole diaphragm opener is improved. When the opening knob 321 is rotated, the second threaded rod 123 is driven to rotate by the cooperation of the lifting rod 318 and the first rod part 110, and the opening arms 220 are driven to open or close by the force rods 124 connected with the second housing 121, so that the angle of the lifted diaphragm is adjustable and controllable, and the diaphragm tissue is prevented from being damaged by being lifted too much.

[0068] In specific implementation, the opposite ear posts 211 can be arranged on the outer wall of the connecting block 210, and a guide groove can be arranged on the inner wall of the second housing 121 along the axial direction, so that the ear posts 211 and the guide groove are slidably connected, and the mounting block can be placed to slide and rotate at the same time, thereby improving the opening accuracy.

[0069] It should be noted that the length of the second threaded rod 123 on the transmission rod 122 is determined by the angle of the lifted diaphragm when the support ring reaches the position of the diaphragm tissue to be lifted in the pituitary tumor surgery.

[0070] Please refer to Figure 7 and Figure 9 As a preferred embodiment, the lifting driving assembly 310 further comprises a first damping assembly 330. The first damping assembly 330 is connected between the lifting knob 312 and the connecting pipe 313, and is used for applying damping force to the rotation of the lifting knob 312.

[0071] Specifically, the first damping assembly 330 includes a damping plate 331 and elastic connecting pieces 332. The two elastic connecting pieces 332 are respectively connected to the left and right sides of one end of the damping plate 331, and the other ends of the two elastic connecting pieces 332 are fixedly connected to the inner wall of the lifting knob 312. The connecting pipe 313 is provided with first damping teeth 3111 around the end close to the lifting knob 312. The other end of the damping plate is inserted between the two adjacent first damping teeth 3111, and the damping plate 331 can rotate with the lifting knob 312.

[0072] Similarly, the distraction driving assembly 320 also includes a second damping assembly 340, which is arranged between the distraction knob 321 and the connecting pipe 313, and is used for applying damping force to the rotation of the distraction knob 321. The structure of the second damping assembly 340 can be the same as that of the first damping assembly 330.

[0073] In specific implementation, the height of the damping plate 331 can be extended into one third of the distance from the top of the gear to the root of the gear. The first damping assembly 330 and the second damping assembly 340 can be provided in multiple numbers, and four are arranged in each damping space at intervals of 90 degrees.

[0074] When the lifting knob 312 is rotated, the lifting knob 312 and the distraction knob 311 are both provided with damping assemblies. When one scale is turned, the damping plate 331 in the damping assembly hits a damping tooth, so that one damping gear is formed for one scale, and the hitting sound and the damping rod make the doctor operate the saddle diaphragm opener more accurately during the operation.

[0075] The specific operation mode of the pituitary tumor operation saddle diaphragm opener is as follows:

[0076] In use, the lifting distraction driving mechanism 300 is held by hand, the distraction execution element 200 is extended into the nostril through the operation rod 100, and the relatively collapsed saddle diaphragm group is expanded through the two distraction rings 230, so that the related operation can be performed.

[0077] During use, when the doctor rotates the lifting knob 312, the first inner teeth 3121 drive the first planetary gear 3142 and the first sun gear 3141 to rotate, and then drive the second connecting plate 317 to rotate, so that the lifting rod 318 is driven to rotate, and the second rod portion 120 is formed with the hinged point of the first U-shaped connecting frame 132 and the second U-shaped connecting frame 133 to swing at a certain angle, so that the opener enters the position of rapid and accurate extension into the transsphenoidal pituitary tumor resection from the nasal cavity.

[0078] Similarly, the doctor manually operates the rotating support knob 321, and the transmission rod 122 of the second rod portion 120 is rotated through the first U-shaped connecting frame 132 and the second U-shaped connecting frame 133. Since the connecting block 210 is limited by the force rod 124, the two support arms 220 or the folding opening state is changed while the connecting block 210 moves axially along the transmission rod 122, and since the threaded connection has a self-locking function, the angle of the diaphragm tissue support is accurately controlled and self-locked.

[0079] The pituitary tumor surgery diaphragm support device has the following advantages:

[0080] 1. The lifting knob 312 and the support knob 321 are arranged at adjacent and close distances, which is reasonable in size of the handle 311 and the connecting pipe 313, and meets the human body single-handed operation of the two knobs. The control of the lifting knob 312 controls the second rod portion 120 to swing in a plane within a controllable range, so that the diaphragm position can be supported at more positions when the device enters the nasal cavity, and the utility performance of the diaphragm support device is improved.

[0081] 2. The support knob controls the rotation of the transmission rod 122 of the second rod portion 120, so that the threaded block at the end of the transmission rod 122 moves in the threaded distance in the direction of the straight transmission rod 122, the support arm 220 drives the support ring to support a certain angle, and the angle of the supported diaphragm is accurately controllable, preventing the diaphragm tissue from being damaged by over-supporting.

[0082] 3. The lifting knob 312 and the support knob 321 are both internally provided with planetary reduction components, which can prevent the patient from being injured by the support device due to the fast rotation of the knob during the nasosphenoidal pituitary tumor surgery. The lifting knob 312 and the support knob are both provided with damping components, and the damping plate 331 in the damping component hits a damping gear every time a scale is turned, that is, one damping gear corresponds to one scale, and the hitting sound and the damping rod make the doctor operate the diaphragm support device more accurately during the surgery.

[0083] 4. The diaphragm support device is designed reasonably, and the structure is simple and easy to operate. Only the lifting knob 312 and the support knob 321 need to be controlled to accurately control the extension of the diaphragm at different positions and the support angle of the diaphragm during the surgery, and the controllability is high.

[0084] 5. The diaphragm support device for pituitary tumor surgery in the application supports the diaphragm tissue in a shearing manner, which not only effectively supports the small opening of the "bottleneck" bag, supports the upper and lower parts of the collapsed diaphragm tissue, clearly displays the tumor at the bottom of the bag, and completely removes the tumor, but also reduces the risk of fatal brain fluid leakage caused by diaphragm rupture.

[0085] The above examples are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some or all of the technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application.

Claims

1. A transsphenoidal pituitary tumor surgery diaphragma spreader, characterized in that, The operation rod comprises a first rod part, a second rod part and an arc-shaped transition section, the first rod part is connected with the second rod part through the arc-shaped transition section, and the arc-shaped transition section can be deformed by bending under force; The distraction execution element comprises a connecting block, two distraction arms and two distraction rings, the connecting block is arranged at the end of the second rod part and can move along the axial direction of the second rod part, the distraction arms are L-shaped, the two distraction arms are arranged in a clamping mode, the ends of the two distraction arms are hingedly connected with the outer wall of the connecting block, and the other ends of the two distraction arms are provided with one distraction ring; The lifting arm distraction driving mechanism is connected with the tail end of the first rod part, can drive the arc-shaped transition section to be deformed by bending, and can drive the connecting block to move along the axial direction of the second rod part through the operation rod, so as to drive the two distraction arms to be opened or closed; The arc-shaped transition section comprises an arc-shaped connecting pipe, a first U-shaped connecting frame, a second U-shaped connecting frame, a first connecting rod and a second connecting rod and a push-pull rod, the arc-shaped connecting pipe is an elastic pipe, the two ends of the arc-shaped connecting pipe are connected with the first rod part and the second rod part respectively, the first U-shaped connecting frame, the second U-shaped connecting frame, the first connecting rod, the second connecting rod and the push-pull rod are located in the arc-shaped connecting pipe, the first connecting rod and the second connecting rod are cross-connected, the first connecting rod is connected between the two vertical ends of the first U-shaped connecting frame, the second connecting rod is connected between the two vertical ends of the second U-shaped connecting frame, the horizontal end of the first U-shaped connecting frame is sleeved with the end of the first rod part and can slide along the axial direction of the first rod part, the horizontal end of the second U-shaped connecting frame is fixedly connected with the end of the second rod part, one end of the push-pull rod is hingedly connected with the end of the first rod part, and the other end is hingedly connected with the second connecting rod; The lifting arm distraction driving mechanism comprises a lifting arm driving assembly and a distraction driving assembly, the lifting arm driving assembly is connected with the first rod part through the distraction driving assembly and can drive the arc-shaped transition section to be deformed by bending, and can drive the connecting block to move along the axial direction of the second rod part through the operation rod, so as to drive the two distraction arms to be opened or closed; The lifting arm driving assembly comprises a handle, a lifting arm knob, a connecting pipe, a first planetary reduction gear set, a conducting column, a first connecting plate, a second connecting plate and a lifting arm rod; The handle, the lifting arm knob and the connecting pipe are annular bodies and are coaxially arranged and can be rotatably connected with each other, and the connecting pipe is rotatably connected with the distraction driving assembly; The distraction driving assembly comprises a distraction driving motor, a distraction driving gear, a distraction driving gear shaft, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a distraction driving gear shaft sleeve, a The inner wall of the lifting knob is provided with first internal toothing, the first planetary reduction gear set includes a first sun gear and a plurality of first planetary gears, the first sun gear is coaxially arranged in the lifting knob, the plurality of first planetary gears are circumferentially spaced between the first sun gear and the lifting knob and are all in mesh with the first internal toothing, the first connecting plate and the second connecting plate are respectively located on the two sides of the first planetary reduction gear set and are rotatably connected with the two ends of the first planetary gear through a first transmission column, one end of the lifting rod is fixedly connected with the second connecting plate and the other end is rotatably connected with the first rod portion through the strutting driving assembly. The strutting driving assembly includes a strutting knob, a second planetary reduction gear set, a third connecting plate and a fourth connecting plate, the strutting knob is coaxially arranged with the connecting pipe and is rotatably connected, the inner wall of the strutting knob is provided with second internal toothing, the second planetary reduction gear set includes a second sun gear and a plurality of second planetary gears, the second sun gear is coaxially arranged in the strutting knob, the plurality of second planetary gears are circumferentially spaced between the second sun gear and the strutting knob and are all in mesh with the second internal toothing, the third connecting plate and the fourth connecting plate are respectively located on the two sides of the second planetary reduction gear set, the two ends of the second planetary gear are rotatably connected with the third connecting plate and the fourth connecting plate through a second transmission column, and the lifting rod is sequentially fixed on the second connecting plate through the fourth connecting plate, the second sun gear and the third connecting plate.

2. The transsphenoidal pituitary surgery saddle opener of claim 1, wherein, The first rod portion includes a first housing, a limiting sleeve, a connecting rod and a first threaded rod, one end of the first housing is rotatably connected with the strutting knob, the other end of the first housing is fixedly connected with the end of the arc-shaped connecting pipe, the limiting sleeve, the connecting rod and the first threaded rod are all located in the first housing, the limiting sleeve is fixedly connected with the fourth connecting plate, the lifting rod is rotatably connected with the limiting sleeve, one end of the first threaded rod is threadedly connected with the end of the lifting rod, the other end of the first threaded rod is rotatably clamped with the connecting rod, the other end of the connecting rod is slidably sleeved with the transverse section of the first U-shaped connecting frame, the outer walls of the two ends of the connecting rod are respectively provided with a first sliding groove and a second sliding groove along the axial direction thereof, the inner wall of the limiting sleeve away from the fourth connecting plate is provided with a limiting rod, and the transverse section of the first U-shaped connecting frame is provided with a protrusion, and the limiting rod and the protrusion are respectively slidably clamped with the first sliding groove and the second sliding groove.

3. The transsphenoidal pituitary surgery saddle opener of claim 1, wherein, The second rod part comprises a second shell, a transmission rod, a second threaded rod and a force rod, one end of the second shell is connected with the arc-shaped connecting pipe, the transmission rod is inserted into the second shell, one end of the transmission rod is fixedly connected with the transverse end of the second U-shaped connecting frame, the second threaded rod is connected at the other end of the transmission rod, the connecting block is threadedly connected with the second threaded rod, the bending parts of the two stretching arms are provided with the force rods, and the two force rods are rotatably connected with the inner wall of the second shell.

4. The transsphenoidal pituitary surgery saddle opener of claim 1, wherein, The lifting arm driving assembly further comprises a first damping assembly connected between the lifting arm knob and the connecting pipe, for applying damping force to the rotation of the lifting arm knob.

5. The transsphenoidal pituitary surgery saddle opener of claim 4, wherein, The first damping assembly comprises a damping plate and elastic connecting pieces, the elastic connecting pieces are two, one end of the two elastic connecting pieces is respectively connected to the left and right sides of one end of the damping plate, the other end of the two elastic connecting pieces is fixedly connected to the inner wall of the lifting arm knob, the connecting pipe is provided with first damping teeth around the end close to the lifting arm knob, the other end of the damping plate is inserted between the two adjacent first damping teeth, and the damping plate can rotate with the lifting arm knob.

6. The transsphenoidal pituitary surgery saddle opener of claim 1, wherein, The stretching driving assembly further comprises a second damping assembly arranged between the stretching knob and the connecting pipe, for applying damping force to the rotation of the stretching knob.

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