Cervical fixing structure for uterine tumor imaging and marking and injection device

Abstract

The invention aims to provide a cervix uteri fixing structure for uterine tumor imaging marking and an injection device, and relates to the technical field of medical instruments.The cervix uteri fixing structure is characterized in that a plurality of expansion plates are arrayed on the inner circumference of an outer cylinder of a dilator, connecting sleeves slidably sleeve the expansion plates, and two connecting rods are rotatably mounted on the connecting sleeves; the other ends of the two connecting rods are rotationally connected with the inner wall of the outer barrel, the pressing barrel is pressed downwards to abut against the connecting rods to rotate, the connecting sleeves are made to be close to the inner wall of the outer barrel, and therefore the expansion plates in a circumferential array are driven to move towards the inner wall of the outer barrel, multi-direction opening is achieved, and the view field is better exposed. The positioning device is driven to move along the central axis of the outer cylinder through stretching and retracting of the telescopic column, so that the deep distance of the positioning disc of the positioning device is adjusted, the positioning disc is provided with the cross-shaped sliding groove, the position of the guider can be adjusted in a sliding mode along the cross-shaped sliding groove, and the guider guiding cylinder is movably installed on the sliding block, so that multi-direction and multi-angle guiding is achieved, and the injection precision is improved. The developing effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field related to medical devices, and in particular to a cervical fixation structure and an injection device for uterine tumor imaging and marking. Background Art

[0002] Sentinel lymph node imaging and biopsy technology has been used in some gynecological malignancies such as cervical cancer and endometrial cancer, and according to current research, it has broad prospects. Sentinel lymph node imaging agents for pelvic and para-aortic lymph node assessment are mostly injected into the patient's cervix, and the injection location and depth vary depending on the type of disease.

[0003] Currently, manual injection is often used in clinical practice, which can easily lead to inaccurate injection and affect the success rate of sentinel lymph node visualization. In addition, the existing device for opening the vagina is a speculum, which can only open the opposite side and cannot effectively block the tissue and expose the field of vision. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides the following technical solutions: A cervical fixation structure and injection device for uterine tumor imaging marking, comprising a spreader and a positioner, the spreader comprising an outer cylinder and a pressing cylinder, the outer cylinder inner circumference array having a plurality of expansion plates, a connecting sleeve slidably sleeved on the expansion plate, two connecting rods rotatably mounted on the connecting sleeve, the other ends of the two connecting rods being rotatably connected to the inner wall of the outer cylinder, the pressing cylinder slidably mounted above the outer cylinder, the lower end of the pressing cylinder penetrates into the outer cylinder, the connecting sleeve is driven to move toward the inner wall of the outer cylinder by pressing the pressing cylinder downward to resist the connecting rod rotation, thereby driving the expansion plate to move toward the inner wall of the outer cylinder; The positioner is located in the outer cylinder and slides up and down. The positioner includes a fixed frame, a positioning plate and four guides. The fixed frame is rotatably sleeved on the outside of the positioning plate. A cross slide groove is provided on the positioning plate. The four guides are respectively located in four directions of the cross slide groove and slide along the cross slide groove. The guide includes a sliding block sliding along the cross slide groove, and a guide cylinder is movably installed on the sliding block.

[0005] Furthermore, the connecting sleeve, the inner wall of the outer cylinder and the two connecting rods form a parallelogram structure, and the two connecting rods are parallel but not collinear.

[0006] Furthermore, a fixed handle is fixedly provided on the outer wall of the outer cylinder, and a rotating handle is cross-rotatably installed on the fixed handle. The end of the rotating handle close to the pressing cylinder is a telescopic structure, and a rotating rod is rotatably installed on the protruding end of the rotating handle. The other end of the rotating rod is rotatably connected to the pressing cylinder. By rotating the rotating handle, the rotating rod is pressed down to resist the downward movement of the pressing cylinder and the connecting rod is rotated, so that the connecting sleeve is close to the inner wall of the outer cylinder.

[0007] Furthermore, a telescopic column is fixedly arranged on the pressing cylinder, and the positioner also includes a fixing rod fixedly mounted on the fixing frame, and the other end of the fixing rod is detachably connected to the protruding end of the telescopic column, and the positioner is driven to move along the central axis of the outer cylinder by the extension and contraction of the telescopic column.

[0008] Furthermore, a ball shell is fixedly arranged on the sliding block, and a ball core is fixedly arranged on the guide cylinder, and the movable connection between the guide cylinder and the sliding block is realized through the cooperation between the ball core and the ball shell.

[0009] Compared with the prior art, the technical solution of this application has the following beneficial effects: The outer cylinder of the expander of the present invention has a plurality of expansion plates in the inner circumferential array, and a connecting sleeve is slidably sleeved on the expansion plate, and two connecting rods are rotatably installed on the connecting sleeve, and the other ends of the two connecting rods are rotatably connected to the inner wall of the outer cylinder, so that the connecting sleeve, the inner wall of the outer cylinder, and the two connecting rods form a parallelogram structure. When in use, the fixed handle is held, the rotating handle is rotated, and the rotating rod is pressed down to press the pressing cylinder downward, and the connecting rod is rotated, so that the connecting sleeve is close to the inner wall of the outer cylinder, thereby driving the expansion plates of the circumferential array to move toward the inner wall of the outer cylinder, thereby realizing expansion in multiple directions and better exposing the field of vision; The present invention installs a fixing rod on the fixing frame of the positioner, and the fixing rod is detachably installed on the telescopic rod of the pressing cylinder. The positioner is driven to move along the central axis of the outer cylinder through the extension and retraction of the telescopic column, so as to adjust the depth of the positioning disk, and a cross slide groove is provided on the positioning disk. The four guides of the positioner are respectively located in the four directions of the cross slide groove and slide along the cross slide groove, so as to realize the position adjustment of the guide. The guide cylinder of the guide is movably installed on the sliding block, and the inclination angle of the guide cylinder can be adjusted in multiple angles and directions, so as to realize multi-directional and multi-angle guidance, improve the injection accuracy, and improve the development effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the side cross-sectional structure of the present invention; Figure 3 It is an enlarged schematic diagram of the side cross-sectional structure A of the present invention; Figure 4 It is an enlarged schematic diagram of the side cross-sectional structure B of the present invention; Figure 5 It is a schematic diagram of the structure of the spreader of the present invention; Figure 6 It is a schematic diagram of the structure of the positioner of the present invention.

[0011] In the figure, outer cylinder -1, fixed handle -11, pressing cylinder -2, expansion plate -3, rotating handle -4, rotating rod -41, telescopic column -5, positioner -6, fixed rod -61, fixed frame -62, positioning plate -63, guide -64, sliding block -641, ball shell -642, ball core -643, guide cylinder -644, connecting rod -7, connecting sleeve -8. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0013] refer to Figure 1-6 A cervical fixation structure and injection device for uterine tumor imaging marking, including a spreader and a positioner 6, the spreader includes an outer tube 1 and a pressing tube 2, the outer tube 1 has a plurality of expansion plates in an array on the inner circumference, a connecting sleeve 8 is slidably sleeved on the expansion plate 3, two connecting rods 7 are rotatably mounted on the connecting sleeve 8, the other ends of the two connecting rods 7 are rotatably connected to the inner wall of the outer tube 1, the pressing tube 2 is slidably mounted above the outer tube 1, the lower end of the pressing tube 2 penetrates into the outer tube 1, and the connecting sleeve 8 is driven to move toward the inner wall of the outer tube 1 by pressing the pressing tube 2 downward to resist the connecting rod 7, thereby driving the expansion plate 3 to move toward the inner wall of the outer tube 1; In this embodiment, the connecting sleeve 8, the inner wall of the outer cylinder 1, and the two connecting rods form a parallelogram structure, the two connecting rods 7 are parallel and not colinear, a fixed handle 11 is fixedly arranged on the outer wall of the outer cylinder 1, a rotating handle 4 is cross-rotatably installed on the fixed handle 11, the end of the rotating handle 4 close to the pressing cylinder 2 is a telescopic structure, and a rotating rod 41 is rotatably installed on the protruding end of the rotating handle 4, the other end of the rotating rod 41 is rotatably connected to the pressing cylinder 2, by rotating the rotating handle 4, the rotating rod 41 is pressed down to move the pressing cylinder 2 downward, and the connecting rod 7 is rotated, so that the connecting sleeve 8 is close to the inner wall of the outer cylinder 1; In this embodiment, a plurality of expansion plates are arranged in a circular array within the outer cylinder 1 of the expander, a connecting sleeve 8 is slidably mounted on the expansion plate 3, two connecting rods 7 are rotatably mounted on the connecting sleeve 8, and the other ends of the two connecting rods 7 are rotatably connected to the inner wall of the outer cylinder 1, so that the connecting sleeve 8, the inner wall of the outer cylinder 1, and the two connecting rods form a parallelogram structure. When in use, the fixed handle 11 is held, the rotating handle 4 is rotated, and the rotating rod 41 is pressed down to push the pressing cylinder 2 downward, and the connecting rod 7 is rotated, so that the connecting sleeve 8 is close to the inner wall of the outer cylinder 1, thereby driving the expansion plates 3 of the circular array to move toward the inner wall of the outer cylinder 1, thereby realizing expansion in multiple directions and better exposing the field of vision. Example 2

[0014] Reference Figure 1-6 According to Embodiment 1, the locator 6 slides up and down within the outer cylinder 1. The locator 6 includes a fixed frame 62, a positioning disk 63, and four guides 64. The fixed frame 62 is rotatably sleeved outside the positioning disk 63. A cross-shaped sliding groove is formed on the positioning disk 63. The four guides 64 are respectively located in the four directions of the cross-shaped sliding groove and slide along the cross-shaped sliding groove. The guide 64 includes a sliding block 641 that slides along the cross-shaped sliding groove, and a guide cylinder 644 is movably installed on the sliding block 641. In this embodiment, a telescopic column 5 is fixedly arranged on the pressing cylinder 2. The locator 6 further includes a fixed rod 61 fixedly installed on the fixed frame 62. The other end of the fixed rod 61 is detachably connected to the extended end of the telescopic column 5. The telescopic movement of the telescopic column 5 drives the locator 6 to move along the central axis of the outer cylinder 1. A spherical shell 642 is fixedly arranged on the sliding block 641, and a spherical core 643 is fixedly arranged on the guide cylinder 644. The movable connection between the guide cylinder 644 and the sliding block 641 is achieved through the cooperation of the spherical core 643 and the spherical shell 642.

[0015] In this embodiment, a fixed rod 61 is installed on the fixed frame 62 of the locator 6, and the fixed rod 61 is detachably installed on the telescopic rod of the pressing cylinder 2. The telescopic movement of the telescopic column 5 drives the locator 6 to move along the central axis of the outer cylinder 1, thereby adjusting the depth of penetration of the positioning disk 63. A cross-shaped sliding groove is formed on the positioning disk 63. The four guides 64 of the locator 6 are respectively located in the four directions of the cross-shaped sliding groove and slide along the cross-shaped sliding groove, thereby realizing the position adjustment of the guide 64. Moreover, the guide cylinder 644 of the guide 64 is movably installed on the sliding block 641, and the inclination angle of the guide cylinder 644 can be adjusted in multiple angles and directions, thereby realizing multi-directional and multi-angle guiding, improving the injection accuracy, and improving the imaging effect.

[0016] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art in the relevant technical field can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A cervical fixation structure and injection device for uterine tumor imaging and marking, characterized in that: It includes a spreader and a positioner. The spreader includes an outer cylinder and a pressing cylinder. The outer cylinder has a plurality of expansion plates in an array on the inner circumference. A connecting sleeve is slidably sleeved on the expansion plate. Two connecting rods are rotatably installed on the connecting sleeve. The other ends of the two connecting rods are rotatably connected to the inner wall of the outer cylinder. The pressing cylinder is slidably installed above the outer cylinder. The lower end of the pressing cylinder penetrates into the outer cylinder. The pressing cylinder is pressed downward to resist the connecting rod and rotate to drive the connecting sleeve to move toward the inner wall of the outer cylinder, thereby driving the expansion plate to move toward the inner wall of the outer cylinder. The positioner is located in the outer cylinder and slides up and down. The positioner includes a fixed frame, a positioning plate and four guides. The fixed frame is rotatably sleeved on the outside of the positioning plate. A cross slide groove is provided on the positioning plate. The four guides are respectively located in four directions of the cross slide groove and slide along the cross slide groove. The guide includes a sliding block sliding along the cross slide groove, and a guide cylinder is movably installed on the sliding block.

2. A cervical fixation structure and injection device for uterine tumor imaging and marking according to claim 1, characterized in that: The connecting sleeve, the inner wall of the outer cylinder and the two connecting rods form a parallelogram structure, and the two connecting rods are parallel but not collinear.

3. A cervical fixation structure and injection device for uterine tumor imaging and marking according to claim 1, characterized in that: A fixed handle is fixedly arranged on the outer wall of the outer cylinder, and a rotating handle is cross-rotatably installed on the fixed handle. The end of the rotating handle close to the pressing cylinder is a telescopic structure, and a rotating rod is rotatably installed on the protruding end of the rotating handle. The other end of the rotating rod is rotatably connected to the pressing cylinder. By rotating the rotating handle, the rotating rod is pressed down to resist the downward movement of the pressing cylinder and the connecting rod is rotated, so that the connecting sleeve is close to the inner wall of the outer cylinder.

4. A cervical fixation structure and injection device for uterine tumor imaging and marking according to claim 1, characterized in that: A telescopic column is fixedly arranged on the pressing cylinder, and the positioner also includes a fixing rod fixedly mounted on the fixing frame, the other end of the fixing rod is detachably connected to the protruding end of the telescopic column, and the positioner is driven to move along the central axis of the outer cylinder by the extension and contraction of the telescopic column.

5. A cervical fixation structure and injection device for uterine tumor imaging and marking according to claim 1, characterized in that: A ball shell is fixedly arranged on the sliding block, and a ball core is fixedly arranged on the guide cylinder. The movable connection between the guide cylinder and the sliding block is realized through the cooperation between the ball core and the ball shell.

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