CN109124634B - Soft negative pressure external expansion type mammary tissue fixing device used in nuclear magnetic environment - Google Patents

Abstract

The utility model discloses a soft negative pressure external expansion type mammary gland fixing device used in a nuclear magnetic environment, which relates to the field of medical appliances and comprises a soft negative pressure external expansion type fixing device, a power transmission system and a central control cabinet, wherein the soft negative pressure external expansion type fixing device is fixed on a bending support frame through bolt matching, the power transmission system is connected with the soft negative pressure external expansion type fixing device, and the power transmission system is controlled by the central control cabinet.

Description

Soft negative pressure external expansion type mammary tissue fixing device used in nuclear magnetic environment

Technical field:

the utility model relates to a soft negative pressure external expansion type mammary tissue fixing device used in a nuclear magnetic environment, belongs to the field of medical equipment, and is particularly applied to mammary gland interventional operation in an MRI environment.

The background technology is as follows:

at present, in the mammary gland interventional operation under the MRI environment, a patient generally adopts a prone posture, so that mammary gland tissues are in a natural sagging state, and meanwhile, because the mobility of the mammary gland tissues is strong, the mammary gland tissues are easy to deviate, and accurate operation cannot be completed on focuses on the mammary gland tissues during the operation. Therefore, it is necessary to design a device for fixing breast tissue so as to limit the mobility of the breast tissue, assist the biopsy operation to be performed, and ensure the accuracy of biopsy sampling, thereby improving the working efficiency of the breast interventional operation. For the design of the device for fixing the mammary gland tissue, a part of the disclosed patent exists, but the currently designed device still has unresolved problems, for example, the utility model patent with the authority bulletin number of CN 204337045U discloses a mammary gland fixer, the mammary gland fixer comprises an upper fixing ring, a middle ring and a lower fixing ring, wherein a plurality of connecting rods are arranged between the upper fixing ring and the lower fixing ring, each connecting rod consists of a plurality of groups of telescopic short rods, a lantern ring is arranged at the inner side of the middle ring, the lantern ring corresponds to the connecting rods, although the lantern ring can be adjusted according to the breast size of a patient, the adjustable range is smaller, the fixing mode belongs to extrusion type, the focus of the mammary gland tissue can be fixed only in an extrusion mode for attaching the mammary gland tissue, the pain degree of the patient in the operation process is increased, the fixing device cannot be adjusted and locked quickly, and in addition, the distance between the rings is too large, the omnibearing enveloping type fixation simulating the human hand mode can not be realized on the mammary gland tissue.

The utility model patent with the authority of the publication number CN 105726137B also discloses a mammary gland interventional operation tissue fixing device which can be used in a nuclear magnetic environment, and a biopsy needle can puncture tissues through a hollowed grid during operation, but the structure of the tissue fixing device is complex, a plurality of parts such as a first-stage baffle, a second-stage baffle, a third-stage baffle, a corresponding three-level positioning slide plate, a driving screw rod and the like are required to be defined, the omnidirectional fixation is ensured, the weight and the complexity of the whole device are increased, meanwhile, the moving speed of a screw rod driven position adjusting mechanism is slow, the noise is large, the operation is complex, and unnecessary negative influence factors in the operation environment are increased. In addition, the hollowed-out grid is of a rigid structure, is not easy to deform and cannot be adjusted according to specific requirements of doctors, so that the operable space of the operation is reduced, and the doctors can customize an operation scheme only according to the existing fixed gaps, so that the operation difficulty of the doctors is increased; more importantly, the fixing mode of the utility model still belongs to an extrusion type fixing mode, focal points are obtained by extruding breast tissues of a patient, and both the extrusion type fixing mode and the rigid material reduce the comfort level of the patient and increase the pain level of the patient.

The utility model patent application number 201810424535X discloses an encircling type mammary tissue fixing device used in a nuclear magnetic environment, which consists of four identical finger plate mechanisms, wherein the four finger plate mechanisms are distributed in a circumferential symmetrical mode, two adjacent finger plate mechanisms are mutually staggered, an operation space is generated by adjusting the gaps of each arc-shaped fixing flexible rod in the finger plate mechanisms, and a doctor is assisted in performing a mammary tissue biopsy operation. In addition, the surgical space created by the overlapping of the individual finger plates is too small and is not conducive to intervention in a breast tissue biopsy procedure. In order to solve the problems, the utility model designs a soft negative pressure external expansion type mammary gland fixing device used in a nuclear magnetic environment.

The existing mammary gland fixing device is comprehensively analyzed, the existing mammary gland fixing device is single in fixing mode, the fixing modes are all extrusion type fixing modes, the mammary gland tissues are not flexible to be extruded, the mammary gland tissues are extruded to deform, surgical intervention is not facilitated, and the device is complex in operation, complex in structure, heavy, narrow in surgical operation space and the like, so that the soft negative pressure external expansion type mammary gland tissue fixing device used in the nuclear magnetic environment is designed.

The utility model comprises the following steps:

aiming at the problems, the utility model aims to provide a soft negative pressure external expansion type mammary gland fixing device used in a nuclear magnetic environment.

A soft negative pressure external expansion type mammary tissue fixing device for nuclear magnetic environment, it contains the support frame of bending over, soft negative pressure external expansion type fixing device, power transmission system and central control cabinet constitute, its characterized in that: the soft negative pressure external expansion type fixing device consists of a soft finger I, a sucker cavity, a soft air bag cavity, a middle partition plate, a soft air inlet, an adsorption air inlet, a soft finger II, an upper turntable fixing ring, an upper turntable large gear, an upper turntable coiling wheel, an upper turntable small gear, a lower turntable fixing ring, an annular notch, a lower turntable large gear, a lower turntable small gear, a lower turntable coiling wheel, a turntable shell, a device shell and a flexible rope, wherein the soft negative pressure external expansion type fixing device is provided with two sets of soft negative pressure external expansion type fixing devices which are respectively fixed on a bending support frame; the power transmission system consists of a near-end flexible cable center, a flexible cable protection tube, a far-end flexible cable center, a near-end air tube center, an air transmission protection tube, a far-end air tube center, a round flexible cable center opening and an arc air inlet center opening, and provides power transmission for the soft negative pressure external expansion type fixing device through flexible cable transmission and air pressure transmission; the central control cabinet consists of a cabinet body, a flexible cable transmission interface, an air pipe interface, a display panel, a stepping motor I, a stepping motor II, an air pressure controller I, an air pressure controller II and a control panel, and the central control cabinet can control the power transmission of the power transmission system through the built-in stepping motor and the air pressure controller; the soft finger I of the soft negative pressure external expansion type fixing device is provided with two soft fingers which are symmetrically distributed, the soft finger II is provided with two soft fingers which are symmetrically distributed, the soft finger I and the soft finger II are made of flexible deformable materials, each soft finger I and the soft finger II consists of four identical suckers, a sucker cavity, a soft air bag and a soft air bag cavity, two air inlets which are respectively a soft air inlet and an adsorption air inlet are respectively arranged on the surfaces of the soft finger I and the soft finger II, the two soft fingers I are connected with an upper turntable fixed ring and an upper turntable large gear through a bolt connection, the two soft fingers II are connected with a lower turntable fixed ring and a lower turntable large gear through a bolt connection, the lower turntable fixed ring is provided with two annular notches which are symmetrically distributed, and the width of each annular notch is 100mm, the number of degrees of a central angle formed by the annular notch is 120 degrees, two soft fingers I which are symmetrically arranged can rotate in the two annular grooves, an upper turntable winding wheel and a lower turntable winding wheel are assembled and installed in a device shell through shaft holes, an upper turntable pinion is installed right below the upper turntable winding wheel through the shaft holes in a matched mode, the upper turntable pinion is meshed with an upper turntable large gear to form a pair of meshing gears, a lower turntable pinion is installed right above the lower turntable winding wheel through the shaft holes in a matched mode, the lower turntable pinion is meshed with the lower turntable large gear to form a pair of meshing gears, a soft rope bypasses the upper turntable winding wheel and the lower turntable winding wheel, the upper turntable winding wheel and the lower turntable winding wheel can rotate around own axes, and the turntable shell is installed right above the upper turntable large gear and the lower turntable large gear; the soft finger II and the soft finger I are completely consistent in structure, and the functions are completely consistent.

Preferably, the power transmission system is provided with two sets, each soft negative pressure external expansion type fixing device is provided with one set of power transmission system, four round flexible cable central openings can be formed in the sections of each near-end flexible cable central and far-end flexible cable central, eight arc air inlet central openings can be formed in the sections of each near-end air pipe central and far-end air pipe central, the near-end flexible cable central is connected with a flexible cable, the far-end flexible cable central is connected with a stepping motor I or a stepping motor II in a central control cabinet, and power is transmitted to the near-end flexible cable central through a flexible cable protection tube, so that movement of the flexible cable is controlled; the near-end tracheal center is connected with the soft air inlet and the adsorption air inlet through the air pipelines, and the far-end tracheal center is connected with the air pressure controller I or the air pressure controller II through the air pipelines, so that compressed gas is transmitted to the near-end tracheal center through the gas transmission protection pipe, and the soft finger I or the soft finger II realizes flexible deformation.

As the preference, the cabinet body in the central control cabinet is provided with a flexible cable transmission interface and an air pipe interface, and is conveniently connected with a power transmission system, a stepping motor I, a stepping motor II, an air pressure controller I and an air pressure controller II are arranged in the cabinet body, a control panel is arranged above the cabinet body, and a display panel is arranged in the control panel to provide interactive functions for doctors and operators.

Preferably, the soft negative pressure external expansion type fixing device can fix breast tissues of different patients through a power transmission system and a central control cabinet; in the mammary gland biopsy intervention process, when the positions of a soft finger I and a soft finger II are required to be adjusted, a central control cabinet is used for controlling flexible cables wound in an upper turntable reel and a lower turntable reel, so that the upper turntable pinion and the lower turntable pinion realize rotation, and further an upper turntable large gear and a lower turntable large gear meshed with the upper turntable pinion and the lower turntable pinion realize rotation simultaneously, the soft finger I and the soft finger II can rotate along the central axis of an upper turntable fixed ring, and a mammary gland intervention operation space can be formed by the gap between the soft finger I and the soft finger II in an axial direction through the rotation of the soft finger I and the soft finger II, the maximum gap linear distance is 150mm, and further the soft finger I and the soft finger II can simulate human fingers to realize 360-degree enveloping and surrounding of the whole mammary gland tissue, so that the fit between a mammary gland tissue fixing device and a mammary gland form is improved; when a doctor needs to fix breast tissues of a patient, the doctor can control the air pressure controller I or the air pressure controller II to generate compressed air through the operation display panel, the compressed air is transmitted to the soft air inlet and the adsorption air inlet of the soft finger I through the power transmission system, the compressed air entering from the soft air inlet can generate air pressure change, so that four soft air bags and four soft air bag cavities can flexibly deform according to breast tissues with different shapes according to air inflow, the air charging time is 0.5s, the air discharging time is 1.3s, and the compressed air entering through the adsorption air inlet generates air pressure change, so that the air space of the sucker cavity is reduced, the air suction time is 0.5s, and the sucker is adsorbed on the surface of the breast tissues; after the sucking disc adsorbs mammary tissue, make the soft finger I and the soft finger II of adsorbing on mammary tissue stretch the mammary gland to expand outside through the air input of adjustment software gasbag and software gasbag chamber, the rethread fine setting soft finger I makes the local position of mammary gland be leveled taut with soft finger II clearance, provides effectual operation space for the doctor.

The beneficial effects of the utility model are as follows:

(1) The soft finger combines the pneumatic soft body and the negative pressure suction cup to form a negative pressure adsorption mode, and the soft finger can adjust the air inflow according to the breast shapes of different patients to enable the soft finger to flexibly deform, so that the soft finger can simulate human fingers, perfectly attach to and envelop the surface of breast tissues, the conformability of the breast tissue fixing device and the breast forms is improved, the comfort of the breast tissue fixing device is ensured, and the pain of the patients in the fixing process is reduced.

(2) Through the flexible rope of control winding in last carousel reel and lower carousel reel for go up carousel pinion and lower carousel pinion realization rotation, and then realize rotating simultaneously with last carousel gear wheel and lower carousel gear wheel of last carousel pinion and lower carousel pinion meshing, make and rotate respectively along last carousel solid fixed ring central axis, realized the adjustment to the clearance between the adjacent of software finger I and software finger II, with the demand of adaptation different patient breast biopsy intervention routes.

(3) The soft finger I and the soft finger II adsorbed on the mammary gland tissue can be stretched to expand outwards by adjusting the air inflow of the soft air bag and the soft air bag cavity, and then the local position of the mammary gland is leveled and tensioned by fine adjustment of the gap between the soft finger I and the soft finger II; in addition, the fixing device can be adjusted in an omnibearing manner according to the requirements of doctors, meets the requirements of different treatment schemes, meanwhile, the structures of the soft finger I and the soft finger II are completely the same, and the omnibearing fixation of mammary tissue can be completed only by four soft fingers, so that the whole structure is simplified, and the complexity degree, assembly and manufacturing difficulty of the whole device are reduced.

(4) The power transmission system combines gas transmission and flexible cable transmission, so that the transmission efficiency and the smoothness in the operation process are improved, and in addition, the eight arc-shaped air inlet central openings improve the flow speed and the transmission efficiency of gas transmission, so that the high efficiency of the operation performed by a doctor is ensured.

(5) The whole set of soft negative pressure external expansion type mammary tissue fixing device is connected with the prone support mainly through threaded connection, so that the device is convenient to install and detach, stability of the fixing device in the operation process is guaranteed, and further operation intervention accuracy is guaranteed.

(6) The central control cabinet is provided with the control panel and the display panel, so that a good interaction mode is provided for doctors and operators, the training difficulty and the operation difficulty of the device are reduced, and further the operation efficiency of mammary gland intervention is improved.

Description of the drawings:

for ease of illustration, the utility model is described in detail by the following detailed description and the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a side view of the structure of the present utility model;

FIG. 3 is a schematic view of a soft negative pressure external expansion type fixing device;

FIG. 4 is a schematic view of the internal structure of the soft negative pressure external expansion type fixing device;

FIG. 5 is a bottom view of the soft negative pressure external expansion type fixing device;

FIG. 6 is a schematic diagram of a power transmission system configuration;

FIG. 7 is a schematic diagram of a central control cabinet;

FIG. 8 is an internal cross-sectional view of soft finger I and soft finger II;

FIG. 9 is a schematic diagram of the structure of the soft finger I and the soft finger II;

FIG. 10 is a cross-sectional view of a circular flex cable hub opening;

FIG. 11 is a cross-sectional view of an arcuate inlet hub.

In the figure: 1 a bending support frame, 2 soft negative pressure external expansion type fixing device, 3 power transmission system, 4 a central control cabinet, 2-1 soft finger I, 2-1 sucking disc, 2-1-2 sucking disc cavity, 2-1-3 soft air bag, 2-1-4 soft air bag cavity, 2-1-5 middle partition plate, 2-1-6 soft air inlet, 2-1-7 adsorption air inlet, 2-2 soft finger II, 2-3 upper turntable fixed ring, 2-4 upper turntable big gear, 2-5 upper turntable winding wheel, 2-6 upper turntable small gear, 2-7 lower turntable fixed ring, 2-7-1 annular notch, 2-8 lower turntable big gear, 2-9 lower turntable small gear, 2-9 upper turntable small gear, 2-7 upper turntable winding wheel, 2-7 lower turntable fixed ring the device comprises a 2-10 lower turntable reel, a 2-11 turntable shell, a 2-12 device shell, a 2-13 flexible rope, a 3-1 proximal flexible rope center, a 3-2 flexible rope protection pipe, a 3-3 distal flexible rope center, a 3-4 proximal air pipe center, a 3-5 gas transmission protection pipe, a 3-6 distal air pipe center, a 3-7 round flexible rope center opening, a 3-8 arc air inlet center opening, a 4-1 cabinet, a 4-2 flexible rope transmission interface, a 4-3 air pipe interface, a 4-4 display panel, a 4-5 stepping motor I, a 4-6 stepping motor II, a 4-7 air pressure controller I, a 4-8 air pressure controller II and a 4-9 control panel.

The specific embodiment is as follows:

for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model is described below by means of specific embodiments shown in the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the utility model. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present utility model.

Example 1: as shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11, the following technical scheme is adopted in this embodiment:

the soft negative pressure external expansion type mammary tissue fixing device for the nuclear magnetic environment comprises a bending support frame 1, a soft negative pressure external expansion type fixing device 2, a power transmission system 3 and a central control cabinet 4, and is characterized in that: the soft negative pressure external expansion type fixing device 2 consists of a soft finger I2-1, a sucking disc 2-1-1, a sucking disc cavity 2-1-2, a soft air bag 2-1-3, a soft air bag cavity 2-1-4, a middle partition plate 2-1-5, a soft air inlet 2-1-6, an adsorption air inlet 2-1-7, a soft finger II 2-2, an upper turntable fixing ring 2-3, an upper turntable gearwheel 2-4, an upper turntable winding wheel 2-5, an upper turntable pinion 2-6, a lower turntable fixing ring 2-7, an annular notch 2-7-1, a lower turntable gearwheel 2-8, a lower turntable pinion 2-9, a lower turntable winding wheel 2-10, a turntable shell 2-11, a device shell 2-12 and a soft rope 2-13, wherein the soft negative pressure external expansion type fixing device 2 is provided with two sets and is respectively fixed on a bending support frame 1; the power transmission system 3 consists of a proximal flexible cable center 3-1, a flexible cable protection tube 3-2, a distal flexible cable center 3-3, a proximal tracheal center 3-4, a gas transmission protection tube 3-5, a distal tracheal center 3-6, a circular flexible cable center opening 3-7 and an arc-shaped air inlet center opening 3-8, wherein the power transmission system 3 provides power transmission for the soft negative pressure external expansion type fixing device 2 through flexible cable transmission and pneumatic transmission; the central control cabinet 4 consists of a cabinet body 4-1, a flexible cable transmission interface 4-2, an air pipe interface 4-3, a display panel 4-4, a stepping motor I4-5, a stepping motor II 4-6, an air pressure controller I4-7, an air pressure controller II 4-8 and a control panel 4-9, wherein the central control cabinet 4 can control the power transmission of the power transmission system 3 through the built-in stepping motor and the air pressure controller; the soft finger I2-1 of the soft negative pressure external expansion type fixing device 2 is provided with two soft fingers I2-2 which are symmetrically distributed, the soft finger I2-1 and the soft finger II 2-2 are made of flexible deformable materials, the soft finger I2-1 and the soft finger II 2-2 are composed of four identical suckers 2-1-1, sucker cavities 2-1-2, soft air bags 2-1-3 and soft air bag cavities 2-1-4, two air inlets are respectively arranged on the surfaces of the soft finger I2-1 and the soft finger II 2-2, namely, the soft air inlets 2-1-6 and the adsorption air inlets 2-1-7, the two soft fingers I2-1 are connected with the upper turntable fixing ring 2-3 and the upper turntable big gear 2-4 through bolt connection, the two soft fingers II 2-2 are connected with the lower turntable fixing ring 2-7 and the lower turntable big gear 2-8 through bolt connection, the lower turntable fixing ring 2-7 is provided with two annular notches 2-7-1, the two annular notches 2-7-1 are symmetrically distributed, the width of the annular notches 2-7-1 is 100mm, the central angle degree formed by the annular notches 2-7-1 is 120 degrees, the two soft fingers I2-1 which are symmetrically arranged can rotate in the two annular notches 2-7-1, the upper turntable winding wheel 2-5 and the lower turntable winding wheel 2-10 are assembled and arranged in the device shell 2-12 through shaft holes, the upper turntable pinion 2-6 is arranged right below the upper turntable winding wheel 2-5 through shaft hole matching, so that the upper turntable pinion 2-6 is meshed with the upper turntable winding wheel 2-4 to form a pair of meshing gears, the lower turntable pinion 2-9 is arranged right above the lower turntable winding wheel 2-10 through shaft hole matching, so that the lower turntable pinion 2-9 is meshed with the lower turntable winding wheel 2-8 to form a pair of meshing gears, the flexible rope 2-13 bypasses the upper turntable winding wheel 2-5 and the lower turntable winding wheel 2-10, and the upper turntable winding wheel 2-5 and the lower turntable winding wheel 2-10 can rotate around the axes of the upper turntable winding wheel 2-4 and the lower turntable winding wheel 2-8; the structure of the soft finger II 2-2 is completely consistent with that of the soft finger I2-1, and the functions are completely consistent.

Further, the power transmission system 3 is provided with two sets, each soft negative pressure external expansion type fixing device 2 is provided with one set of power transmission system 3, four round flexible cable central openings 3-7 can be formed in the sections of each proximal flexible cable central 3-1 and each distal flexible cable central 3-3, eight arc air inlet central openings 3-8 can be formed in the sections of each proximal air pipe central 3-4 and each distal air pipe central 3-6, wherein the proximal flexible cable central 3-1 is connected with a flexible cable 2-13, the distal flexible cable central 3-3 is connected with a stepping motor I4-5 or a stepping motor II 4-6 in a central control cabinet 4, and power is transmitted to the proximal flexible cable central 3-1 through a flexible cable protection tube 3-2, so that the movement of the flexible cable 2-13 is controlled; the proximal air pipe center 3-4 is connected with the soft air inlet 2-1-6 and the adsorption air inlet 2-1-7 through the air pipeline, the distal air pipe center 3-6 is connected with the air pressure controller I4-7 or the air pressure controller II 4-8 through the air pipeline, and compressed air is transmitted to the proximal air pipe center 3-4 through the air transmission protection pipe 3-5, so that the soft finger I2-1 or the soft finger II 2-2 can realize flexible deformation.

Further, a flexible cable transmission interface 4-2 and an air pipe interface 4-3 are reserved on a cabinet body 4-1 in the central control cabinet 4, the flexible cable transmission interface is conveniently connected with the power transmission system 3, a stepping motor I4-5, a stepping motor II 4-6, an air pressure controller I4-7 and an air pressure controller II 4-8 are installed in the cabinet body 4-1, a control panel 4-9 is installed above the cabinet body 4-1, and a display panel 4-4 is arranged in the control panel 4-9 to provide interaction functions for doctors and operators.

Example 2: specific embodiments of adjusting the fixation position of the breast fixation device:

according to the apparatus described in embodiment 1, when a doctor needs to adjust the fixing position of the breast fixing device during a breast biopsy intervention, the doctor can control the central control cabinet 4 by operating the control panel 4-9, and further control the flexible cord 2-13 wound around the upper and lower turntable reels 2-5 and 2-10, so that the upper and lower turntable pinions 2-6 and 2-9 achieve autorotation, and further the upper and lower turntable pinions 2-4 and 2-8 meshed with the upper and lower turntable pinions 2-6 and 2-9 achieve autorotation at the same time, so that the soft finger I2-1 and the soft finger II 2-2 can rotate along the central axis of the upper turntable fixing ring 2-3, so that a breast intervention operation space can be formed by the gap between the soft finger I2-1 and the soft finger II 2-2, the gap range is 0-150mm, and when the gap space satisfies the focus area and operation condition of a patient, the doctor can stop rotating the soft finger I2-1 and the soft finger II 2-2, and the soft finger II-2 is rotated along the central axis of the fixing device.

Example 3: specific embodiments of fixation of mammary tissue:

according to the device described in embodiment 1, when a doctor confirms the fixing position of the breast fixing device and needs to fix breast tissue of a patient, the doctor can control the air pressure controller I4-7 or the air pressure controller II 4-8 to generate compressed air by operating the display panel 4-4, the compressed air is transmitted to the soft air inlet 2-1-6 and the adsorption air inlet 2-1-7 of the soft finger I2-1 through the power transmission system 3, the compressed air entering from the soft air inlet 2-1-6 can change in air pressure, so that the four soft air bags 2-1-3 and the four soft air bag cavities 2-1-4 can flexibly deform according to breast tissue with different shapes according to air inflow, the air charging time is 0.5s, the air discharging time is 1.3s, the compressed air entering through the adsorption air inlet 2-1-7 changes in air pressure, the air space of the sucking disc cavity 2-1-2 is reduced, and the sucking time is 0.5s, so that the sucking disc 2-1-1 is adsorbed on the surface of the breast tissue; after the sucker 2-1-1 adsorbs mammary tissue, a doctor can adjust the air inflow of the soft air bag 2-1-3 and the soft air bag cavity 2-1-4 to enable the soft finger I2-1 and the soft finger II 2-2 adsorbed on the mammary tissue to stretch the mammary gland to expand outwards, and then fine-tune the gap between the soft finger I and the soft finger II to enable the local position of the mammary gland to be leveled and tensioned, so that the mammary tissue of the patient can be fixed according to the operation requirement of the doctor.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (4)

1. The utility model provides a soft negative pressure external expansion formula mammary tissue fixing device for under nuclear magnetic environment, it contains the support frame of bending over (1), soft negative pressure external expansion formula fixing device (2), power transmission system (3) and central control cabinet (4) constitute, its characterized in that: the soft negative pressure external expansion type fixing device (2) consists of a soft finger I (2-1), a sucker (2-1-1), a sucker cavity (2-1-2), a soft air bag (2-1-3), a soft air bag cavity (2-1-4), an intermediate baffle (2-1-5), a soft air inlet (2-1-6), an adsorption air inlet (2-1-7), a soft finger II (2-2), an upper rotary disc fixing ring (2-3), an upper rotary disc large gear (2-4), an upper rotary disc coiling wheel (2-5), an upper rotary disc pinion (2-6), a lower rotary disc fixing ring (2-7), an annular notch (2-7-1), a lower rotary disc large gear (2-8), a lower rotary disc pinion (2-9), a lower rotary disc coiling wheel (2-10), a rotary disc shell (2-11), a device shell (2-12) and a soft rope (2-13), wherein the soft negative pressure external expansion type fixing device (2) is provided with two sets and is respectively fixed on a body supporting frame (1); the power transmission system (3) consists of a near-end flexible cable center (3-1), a flexible cable protection tube (3-2), a far-end flexible cable center (3-3), a near-end air pipe center (3-4), an air transmission protection tube (3-5) and a far-end air pipe center (3-6), a round flexible cable center opening (3-7) and an arc air inlet center opening (3-8), and the power transmission system (3) provides power transmission for the soft negative pressure external expansion type fixing device (2) through flexible cable transmission and air pressure transmission; the central control cabinet (4) consists of a cabinet body (4-1), a flexible cable transmission interface (4-2), an air pipe interface (4-3), a display panel (4-4), a stepping motor I (4-5), a stepping motor II (4-6), an air pressure controller I (4-7), an air pressure controller II (4-8) and a control panel (4-9), wherein the central control cabinet (4) can control the power transmission of the power transmission system (3) through the built-in stepping motor and the air pressure controller; the soft body negative pressure external expansion type fixing device (2) is characterized in that soft body fingers I (2-1) are provided with two soft body fingers II (2-2) which are symmetrically distributed, the soft body fingers I (2-1) and the soft body fingers II (2-2) are made of flexible deformable materials, the soft body fingers I (2-1) and the soft body fingers II (2-2) are all composed of four identical suckers (2-1-1), sucker cavities (2-1-2), soft body air bags (2-1-3) and soft body air bag cavities (2-1-4), two air inlets are respectively formed in the surfaces of the soft body fingers I (2-1) and the soft body fingers II (2-2) and are respectively provided with the soft body air inlets (2-1-6) and the adsorption air inlets (2-1-7), the two soft body fingers I (2-1) are connected with an upper turntable fixing ring (2-3) and an upper turntable large gear (2-4) through bolts, the two soft body fingers II (2-2) are connected with a lower turntable (2-7) through bolts, the two soft body fingers II (2-2) are connected with a lower turntable ring (2-7) through bolts, the two turntable ring type fixing ring (2-7) are connected with the lower turntable ring type fixing ring (2-7), the two annular notches (2-7-1) are symmetrically distributed, the width of the annular notches (2-7-1) is 100mm, the central angle degree formed by the annular notches (2-7-1) is 120 degrees, two soft fingers I (2-1) which are symmetrically arranged can rotate in the two annular notches (2-7-1), an upper turntable winding wheel (2-5) and a lower turntable winding wheel (2-10) are assembled and installed in a device shell (2-12) through shaft holes, an upper turntable pinion (2-6) is installed under the upper turntable winding wheel (2-5) through shaft holes in a matched mode, the upper turntable pinion (2-6) is meshed with an upper turntable large gear (2-4) to form a pair of meshing gears, a lower turntable pinion (2-9) is installed right above the lower turntable winding wheel (2-10) through shaft holes in a matched mode, the lower turntable winding wheel (2-9) is meshed with the lower turntable large gear (2-8) to form a pair of meshing gears, a soft cable (2-13) is wound on the upper turntable winding wheel (2-5) and the lower turntable winding wheel (2-5) to enable the upper turntable winding wheel and the lower turntable winding wheel (2-5) to rotate around the upper turntable winding wheel (2-5), the turntable shell (2-11) is arranged right above the upper turntable large gear (2-4) and the lower turntable large gear (2-8); the soft finger II (2-2) and the soft finger I (2-1) are completely consistent in structure, and the functions are completely consistent.

2. A soft negative pressure external expansion type mammary tissue fixing device for nuclear magnetic environment as claimed in claim 1, wherein: the power transmission system (3) is provided with two sets, each soft negative pressure external expansion type fixing device (2) is provided with one set of power transmission system (3), four round flexible rope central openings (3-7) can be formed in the sections of each near-end flexible rope central (3-1) and each far-end flexible rope central (3-3), eight arc air inlet central openings (3-8) can be formed in the sections of each near-end air pipe central (3-4) and each far-end air pipe central (3-6), the near-end flexible rope central (3-1) is connected with a flexible rope (2-13), the far-end flexible rope central (3-3) is connected with a stepping motor I (4-5) or a stepping motor II (4-6) in a central control cabinet (4), and power is transmitted to the near-end flexible rope central (3-1) through a flexible rope protection pipe (3-2), so that movement of the flexible rope (2-13) is controlled; the near-end air pipe center (3-4) is connected with the soft air inlet (2-1-6) and the adsorption air inlet (2-1-7) through air pipelines, the far-end air pipe center (3-6) is connected with the air pressure controller I (4-7) or the air pressure controller II (4-8) through air pipelines, compressed air is transmitted to the near-end air pipe center (3-4) through the air transmission protection pipe (3-5), and the soft finger I (2-1) or the soft finger II (2-2) can realize flexible deformation.

3. A soft negative pressure external expansion type mammary tissue fixing device for nuclear magnetic environment as claimed in claim 1, wherein: the central control cabinet (4) is characterized in that a cabinet body (4-1) in the central control cabinet (4) is provided with a flexible cable transmission interface (4-2) and an air pipe interface (4-3), the flexible cable transmission interface is conveniently connected with a power transmission system (3), a stepping motor I (4-5), a stepping motor II (4-6), an air pressure controller I (4-7) and an air pressure controller II (4-8) are arranged in the cabinet body (4-1), a control panel (4-9) is arranged above the cabinet body (4-1), and a display panel (4-4) is arranged in the control panel (4-9) to provide interactive functions for doctors and operators.

4. A soft negative pressure external expansion type mammary tissue fixing device for nuclear magnetic environment as claimed in claim 1, wherein: the soft negative pressure external expansion type fixing device (2) can fix breast tissues of different patients through the power transmission system (3) and the central control cabinet (4); in the mammary gland biopsy intervention process, when the positions of a soft finger I (2-1) and a soft finger II (2-2) are required to be adjusted, a central control cabinet (4) is used for controlling a flexible rope (2-13) wound in an upper rotary table reel (2-5) and a lower rotary table reel (2-10), so that the upper rotary table pinion (2-6) and the lower rotary table pinion (2-9) realize rotation, an upper rotary table large gear (2-4) and a lower rotary table large gear (2-8) meshed with the upper rotary table pinion (2-6) and the lower rotary table pinion (2-9) realize rotation at the same time, the soft finger I (2-1) and the soft finger II (2-2) can rotate along the central axis of an upper rotary table fixed ring (2-3), and a mammary gland intervention space can be formed by the clearance between the upper rotary table pinion (2-6) and the lower rotary table pinion (2-9), the maximum linear clearance distance between the soft finger I (2-1) and the soft finger II (2-2) can further realize fitting of a mammary gland tissue simulation device of the human mammary gland, and the mammary gland tissue simulation device can be further improved, and the mammary gland tissue simulation of the soft finger II (2-2) can be fitted with the soft finger II (2-3); when a doctor needs to fix breast tissues of a patient, the doctor can control the air pressure controller I (4-7) or the air pressure controller II (4-8) to generate compressed air through the operation display panel (4-4), the compressed air is transmitted to the soft air inlet (2-1-6) and the adsorption air inlet (2-1-7) of the soft finger I (2-1) through the power transmission system (3), the compressed air entering from the soft air inlet (2-1-6) can change in air pressure, so that four soft air bags (2-1-3) and four soft air bag cavities (2-1-4) can flexibly deform according to breast tissues with different shapes according to air inflow, the air charging time is 0.5s, the air discharging time is 1.3s, the compressed air entering through the adsorption air inlet (2-1-7) changes in air pressure, the air space of the sucking disc cavity (2-1-2) is reduced, the air sucking time is 0.5s, and the sucking disc (2-1-1) is sucked on the surface of the breast tissues; after the sucker (2-1-1) adsorbs mammary tissue, the air inflow of the soft air bag (2-1-3) and the soft air bag cavity (2-1-4) is adjusted to enable the soft finger I (2-1) and the soft finger II (2-2) adsorbed on the mammary tissue to stretch the mammary gland to expand outwards, and then the gap between the soft finger I (2-1) and the soft finger II (2-2) is finely adjusted to enable the local position of the mammary gland to be leveled and tensioned, so that an effective operation space is provided for doctors.

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