CN212650843U - Pulmonary nodule locator - Google Patents

Abstract

The utility model discloses a pulmonary nodule locator, include through the vertical fixed column of locating clip location centre gripping on the bed board, connect on the vertical fixed column to be provided with and be used for removing and can fix a position the focus point positioning mechanism directly over the focus point in the optional position directly over human rib, connect on the focus point positioning mechanism to be provided with and be used for making the pjncture needle slope pierce the slope of position between the human rib and can adjust the slope of going into the needle angle and go into needle mechanism. The utility model discloses can calculate the regulating variable size of discrepancy needle angle modulation structure according to similar triangle-shaped principle to on scalable income needle pipeline and focus point because of adjusting the back slope are in same straight line all the time, can guarantee that the pjncture needle that penetrates pierces to the focus accurately, and can follow the slope between two human ribs and pierce.

Description

Pulmonary nodule locator

Technical Field

The utility model relates to the technical field of medical equipment, more specifically relates to a pulmonary nodule locator.

Background

Pulmonary nodules refer to intrapulmonary nodules <30mm in diameter, the nature of which is difficult to determine early. There is a certain probability of malignancy of the lung nodules. Early diagnosis is the key of prognosis, and how to identify the benign or malignant state is one of the problems in clinical diagnosis and treatment. In recent years, with the development of novel fiberbronchoscope, high resolution CT, thoracoscope techniques, the development of percutaneous lung biopsy provides help for clinical identification of the benign and malignant lung nodules. Percutaneous aspiration lung biopsy is an effective method for diagnosing and treating pulmonary nodules, but an advanced tool is needed to complete the operation of safe, efficient and convenient aspiration.

In order to diagnose the pathology correctly and to make the correct treatment, it is necessary to take a biopsy of the lesion by puncture, or to perform a targeted treatment by puncture, usually by means of an instrument such as a CT scanner to determine the location of the lesion with respect to the skin location point and the depth of the puncture needle. Firstly, the position of a focus is measured on a certain cross section layer of a human body, the optimal needle inserting position and needle inserting angle are selected in the layer, and the accurate positions of the focus and puncture needle puncture are determined by utilizing the angle of the needle inserting layer, the needle inserting angle and the three-dimensional image of the needle inserting depth.

However, the existing puncture guiding device has a complex structure, cannot realize accurate positioning of a focus point, needs to perform multiple puncture attempts, brings great pain to a patient, and has low puncture efficiency. Most puncture guiding devices can only realize vertical puncture in the vertical direction, if a focus point is positioned under a rib of a human body, the focus point can be directly punctured vertically to pierce into the rib of the human body, and the device cannot be punctured, so that the applicability of the device is poor.

In addition, the existing puncture guiding device is based on accurate positioning of the CT scanning device and then punctures, but the CT quick positioning scale paper used for ensuring accurate positioning of the CT scanning device is directly paved on the chest of a human body, and when CT scanning is carried out, the detection result of the CT scanning device is not accurate enough because the chest of the human body is not a flat horizontal plane.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that needs to solve provides a tubercle locator of lung to solve the unable accurate positioning who realizes the focus point of current puncture guiding device, can't carry out the problem of puncture to the focus point that lies in under the human rib, with the realization to the accurate puncture location of focus point, with the purpose of carrying out the puncture of the focus point under the realization human rib, with the convenience that increases the puncture and adjust.

In order to solve the technical problem, the utility model adopts the following technical proposal.

Pulmonary nodule locator includes through the vertical fixed column of locating clip location centre gripping on the bed board, and the connection is provided with on the vertical fixed column is used for can removing and can fix a position the focus point positioning mechanism directly over the focus point in the optional position directly over human rib, and the last connection of focus point positioning mechanism is provided with and is used for making the pjncture needle slope pierce the position between the human rib and can adjust the slope of inserting the needle angle and go into the needle mechanism.

Further optimize technical scheme, focus point positioning mechanism can carry out the type of falling L rotary rod of pivoted on the horizontal plane including rotating the setting on vertical fixed capital end, adjust the scalable connection of structure through the second location and set up the needle vertical stand that can turn over to on scalable L type round bar and vertical rotation of the scalable L type round bar of falling L rotary rod one end, can turn over to the needle vertical stand that the bottommost of needle vertical stand is located the focus point directly over, the needle mechanism setting is gone into in the slope on can turning over to the needle vertical stand to the rotation.

According to the technical scheme, the inclined needle inserting mechanism comprises a needle inserting angle adjusting structure which is transversely and telescopically arranged on a vertical support of the rotatable needle and used for adjusting a needle inserting angle and enabling the puncture needle to be obliquely inserted into a position between ribs of a human body, and a telescopic needle inserting pipeline which is hinged to the tail end of the needle inserting angle adjusting structure and used for penetrating the puncture needle; the rotatable needle vertical support, the needle inserting angle adjusting structure, the telescopic needle inserting pipeline and the focus point are positioned in the same vertical plane vertical to the ribs of the human body.

According to the technical scheme, scales used for representing the telescopic length are arranged on the side walls of the first telescopic rod and the second telescopic rod respectively.

According to the technical scheme, the upper side wall and the lower side wall of the retractable needle pipeline are respectively and integrally connected with a hinged positioning seat, and the hinged positioning seats are connected with the hinged seats through hinged shafts.

According to the technical scheme, the middle of the vertical fixing column is provided with a horizontal plate located right above the bed plate through a first positioning adjusting structure, and CT quick positioning scale paper is horizontally laid on the horizontal plate.

According to the technical scheme, a level meter used for detecting whether the horizontal plate is in a horizontal state or not so as to ensure the detection precision of the CT scanning device is arranged on the top end face of the horizontal plate.

Due to the adoption of the technical scheme, the utility model has the following technical progress.

The utility model discloses with but telescopic income needle pipeline through going into the articulated setting of needle angle regulation structure can rotate over to the vertical support of needle into, can rotate over to the vertical support of needle into can rotate and horizontal regulation, and make can rotate over to the vertical support of needle into, go into needle angle regulation structure, but scalable income needle pipeline lies in with human rib looks vertically same vertical plane with focus point, can rotate over to the vertical support of needle into the bottom is located the focus point directly over, consequently, can calculate the regulating variable size of discrepancy needle angle regulation structure according to similar triangle-shaped principle, and because of the scalable income needle pipeline of adjusting the back slope is in same straight line all the time with focus point, can guarantee that the pjncture needle that penetrates pierces the focus accurately, realize the accurate positioning to the focus point, and can follow the slope between two human ribs and pierce, the location is very quick, it is accurate.

The utility model discloses the horizontal plate sets up on vertical fixed column through the first location adjustment structure location that can adjust the horizontal plate height, and CT fixes a position scale paper level fast and lays on the horizontal plate for medical personnel adjust the position of horizontal plate according to patient's size and fat thin degree, and then make this device can be applicable to the patient of different grade type.

The utility model discloses shelter from the focus point when the vertical rotation round bar that changes over to the vertical support of needle can rotate to is rotatory to the focus point directly over, the X ray that CT scanning device sent will not penetrate into the focus point on, and then make medical personnel can know fast whether move to target in place to the vertical rotation round bar that changes over to the vertical support of needle in this device to subsequent operation is convenient for.

The utility model discloses to go into the flexible suitable length of the flexible pole of second in the needle angle modulation structure, can obtain the flexible value of the first telescopic link that needs adjust through calculating again, on being in same straight line all the time because of adjusting back scalable income needle pipeline and focus point, guaranteed that the pjncture needle goes into the accuracy of needle, guaranteed that the pjncture needle that penetrates can puncture the focus all the time.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is a front view of embodiment 1 of the present invention;

fig. 3 is a schematic structural view of the working principle of embodiment 1 of the present invention;

FIG. 4 is a schematic structural view of the retractable needle tube penetrating into the puncture needle according to embodiment 1 of the present invention;

fig. 5 is a schematic structural view of the present invention in which the position of a focal point is changed according to embodiment 1;

fig. 6 is a schematic structural view of embodiment 2 of the present invention;

fig. 7 is a schematic structural diagram of the working principle of embodiment 2 of the present invention.

Wherein: 1. a bed board, 2, a positioning splint, 3, a vertical fixing column, 4, a first positioning adjustment structure, 41, a first positioning locking nail, 42, an adjustment block, 5, a horizontal board, 51, a level gauge, 6, CT rapid positioning scale paper, 7, an inverted L-shaped rotating rod, 8, a telescopic L-shaped round rod, 9, a second positioning adjustment structure, 91, a second positioning locking nail, 10, a rotatable needle vertical support, 101, a vertical rotating round rod, 102, a first transverse sleeve, 103, a second transverse sleeve, 11, a needle-entering angle adjustment structure, 111, a first telescopic rod, 112, a second telescopic rod, 113, a hinged seat, 114, a hinged positioning seat, 115, a hinged shaft, 12, a telescopic needle-entering pipeline, 13, a puncture needle, 14, a focus point, 15, a human body, 16, a first universal joint adjustment structure, 161, a first universal joint, 162, a first connecting rod, 163 and a second universal joint, 164. the second connecting rod, 165, connecting sleeve, 17, second universal joint adjusting structure, 171, third universal joint, 172, third connecting rod, 173, fourth universal joint, 174, fourth connecting rod, 176, set screw, 18, vertical adjusting column, 19, horizontal sliding ruler, 20, vertical sliding ruler, 21, oblique sliding ruler, 22, first adjustable nut, 23, second adjustable nut, 24, chute, 25, articulated shaft, 26, needle inserting pipeline, 27, first adjusting bolt, 28, second adjusting bolt.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Example 1

A pulmonary nodule locator, as shown in fig. 1 to 5, comprises a vertical fixing column 3, a focal point locating mechanism and an inclined needle inserting mechanism.

Vertical fixed column 3 is through the location centre gripping of locating splint 2 to 1 head of bed board, the utility model discloses well vertical fixed column 3 is vertical pipe. One end of the positioning clamp plate 2 is arranged to be a clamp, the other end of the positioning clamp plate is provided with an extension plate, the vertical fixing column 3 is fixedly arranged on the extension plate, the clamp can effectively clamp and position the head of the bed plate 1, and the whole stability of the device is guaranteed.

Furthermore, the utility model provides a location splint 2 still can adopt the I shape steel sheet, hold the notch card of I shape steel sheet on bed board 1, and the rethread bolt is fixed I shape steel sheet and bed board 1.

The focus point positioning mechanism is connected and arranged on the vertical fixing column 3 and used for moving at any position right above the rib 15 of the human body and positioning right above the focus point 14. The focus point positioning mechanism comprises an inverted L-shaped rotary rod 7, a telescopic L-shaped round rod 8, a rotatable needle vertical support 10 and a horizontal plate 5.

The inclined needle inserting mechanism is connected with the focus point positioning mechanism and is used for enabling the puncture needle 13 to be obliquely inserted into the position between the ribs of the human body and adjusting the needle inserting angle. The inclined needle inserting mechanism comprises a needle inserting angle adjusting structure 11 and a telescopic needle inserting pipeline 12. The inclined needle inserting mechanism is arranged on the rotatable needle vertical support 10.

The rotatable needle vertical support 10, the needle inserting angle adjusting structure 11, the telescopic needle inserting pipeline 12 and the focus point are positioned in the same vertical plane vertical to the human body ribs, and the bottommost end of the rotatable needle vertical support 10 is positioned right above the focus point. The utility model discloses before going into the needle to the focus point of different positions, will change over to the bottommost of the vertical support 10 of needle all the time and adjust to the focus point directly over to, in order to guarantee the utility model discloses can realize the accuracy and go into the needle.

The type of falling L rotary rod 7 rotates and sets up on vertical fixed column 3 top, can carry out the rotation on the horizontal plane. The utility model provides a type of falling L rotary rod 7 sets up to type of falling L pipe form, including the standpipe with violently manage. Through bearing roll connection between standpipe and the vertical fixed column 3, and then guaranteed to fall L type rotary rod 7, scalable L type round bar 8, can rotate to the vertical support of needle 10, income needle angle regulation structure 11, scalable income needle pipeline 12 and can rotate on the horizontal plane, make the utility model discloses can be applicable to equally when the position of focus changes. The horizontal pipe of the inverted L-shaped rotary rod 7 is in a hollow round pipe shape, so that the telescopic L-shaped round rod 8 can be inserted into the horizontal pipe.

The utility model discloses well human rib 15 position is only for the signalling condition, and the actual length of the violently pipe of the type of falling L rotary rod 7 is longer, can guarantee that scalable L type round bar 8 freely stretches out and draws back directly over human rib, and the position of actual human rib on the bed board will lean on a little to the right to guarantee that human head can be rested on the bed board.

The telescopic L-shaped round rod 8 is telescopically connected to one end of the inverted L-shaped rotating rod 7 through a second positioning adjusting structure 9. The telescopic L-shaped round bar 8 comprises a horizontal round tube and a vertical round tube, and the horizontal round tube is inserted into the horizontal tube of the inverted L-shaped rotating bar 7. Scales are arranged on the outer wall of the transverse circular pipe of the telescopic L-shaped circular rod 8, and the extension amount of the telescopic L-shaped circular rod 8 can be shown.

The second positioning adjusting structure 9 comprises a second positioning locking nail 91, a threaded hole is formed in the transverse pipe of the inverted L-shaped rotary rod 7, the second positioning locking nail 91 is in threaded hole in threaded connection, and positioning between the inverted L-shaped rotary rod 7 and the telescopic L-shaped round rod 8 can be achieved by screwing the second positioning locking nail 91.

The rotatable needle vertical support 10 is vertically and rotatably arranged on the telescopic L-shaped round rod 8. The rotatable needle vertical support 10 comprises a vertical rotating round rod 101 vertically rotatably arranged at the top end of the telescopic L-shaped round rod 8, a first transverse sleeve 102 transversely fixedly arranged at the top end of the vertical rotating round rod 101 and a second transverse sleeve 103 transversely fixedly arranged at the middle part of the vertical rotating round rod 101 and parallel to the vertical rotating round rod 101, the transverse length of the second transverse sleeve 103 is smaller than that of the first transverse sleeve 102, and the vertical rotating round rod 101 is positioned right above a focus point.

The retractable needle inlet pipeline 12 is hinged to the rotatable needle vertical support 10 through the needle inlet angle adjusting structure 11 and transversely and telescopically arranged on the rotatable needle vertical support 10, and the retractable needle inlet pipeline 12 is in a hollow tubular shape and used for penetrating and puncturing the puncture needle 13.

The needle insertion angle adjusting structure 11 is used for adjusting the needle insertion angle and enabling the puncture needle 13 to obliquely puncture the human body rib space.

The needle-inserting angle adjusting structure 11 comprises a first telescopic rod 111 telescopically arranged on the first transverse sleeve 102 through a third positioning adjusting structure, and a second telescopic rod 112 telescopically arranged on the second transverse sleeve 103 through a fourth positioning adjusting structure, wherein the outer ends of the first telescopic rod 111 and the second telescopic rod 112 are respectively and fixedly provided with a hinge base 113. The vertical rotating round rod 101, the first transverse sleeve 102, the second transverse sleeve 103, the first telescopic rod 111, the second telescopic rod 112, the telescopic needle inserting pipeline 12 and the lesion site are positioned in the same vertical plane.

Scales for indicating the extension length are respectively arranged on the side walls of the first extensible rod 111 and the second extensible rod 112.

The upper and lower side walls of the retractable needle tube 12 are integrally connected with a hinge positioning seat 114, and the hinge positioning seat 114 and the hinge seat 113 are connected by a hinge shaft 115.

The horizontal plate 5 is positioned and arranged in the middle of the vertical fixing column 3 through the first positioning adjusting structure 4 and is positioned right above the bed plate 1. The CT quick positioning scale paper 6 is horizontally laid on the horizontal plate 5 and used for enabling the CT scanning device to realize quick positioning of the focus position. The utility model discloses the rectangle recess has been seted up at well horizontal plate 5's middle part, and CT fixes a position scale paper 6 fast and lays in the rectangle recess, and the horizontal plate 5 of rectangle recess bottom is the lamella form, can make pjncture needle 13 pass.

First location adjustment structure 4 includes regulating block 42 and the first location check lock nail 41 of threaded connection on regulating block 42 with 5 integrative fixed connection of horizontal plate, and the regulating block 42 cover is established on vertical fixed column 3, can slide from top to bottom along vertical fixed column 3, can realize the location to regulating block 42 through revolving first location check lock nail 41.

The side wall of the vertical fixing column 3 is provided with a scale b for indicating the vertical distance between the CT quick positioning scale paper 6 and the bottom end of the inverted L-shaped rotating rod 7.

The top end surface of the horizontal plate 5 is provided with a level 51 for detecting whether the horizontal plate 5 is in a horizontal state or not, so as to ensure the detection precision of the CT scanning device.

The utility model discloses the location process of going on pjncture needle in reality is as follows.

S1, the patient lies on the bed board 1, and the medical staff adjusts the position of the horizontal plate 5 according to the body type and the fat-thin degree of the patient. Medical personnel unscrew first location check lock nail 41, adjust horizontal plate 5 to the position that contacts with human chest, observe spirit level 51 on the horizontal plate 5 simultaneously, according to spirit level 51's instruction, adjust horizontal plate 5 to horizontal position. And then screwing the first positioning locking nail 41 to enable the horizontal plate 5 to be positioned on the vertical fixing column 3, placing the CT quick positioning scale paper 6 on the horizontal plate 5, and enabling the positioning line of the CT quick positioning scale paper 6 to be consistent with the scanning line of the CT scanning device.

S2, CT scanning is carried out on the chest of the human body by the CT scanning device, and the depth of the focus point and the position of the ruler paper 6 relative to the CT rapid positioning are obtained by the CT scanning device.

S3, adjusting the telescopic length of the telescopic L-shaped round rod 8, simultaneously rotating the inverted L-shaped rotary rod 7 until the vertical rotary round rod 101 which can rotate into the needle vertical support 10 is adjusted to be right above a focus point, and then positioning the telescopic L-shaped round rod 8 by the second positioning locking nail 91.

In this step, shelter from the focus point when the vertical rotation round bar 101 that can rotate into needle vertical stand 10 rotates to the focus point directly over, the X ray that CT scanning device sent will not penetrate into the focus point on, and then make medical personnel can know in this device fast whether vertical rotation round bar 101 that can rotate into needle vertical stand 10 moves in place to subsequent operation is convenient for.

S4, rotating the rotatable needle vertical support 10 to enable the rotatable needle vertical support 10 and the transverse circular tube of the telescopic L-shaped circular rod 8 to be located in two vertical planes perpendicular to each other, and at the moment, rotating the rotatable needle vertical support 10, the needle inserting angle adjusting structure 11, the telescopic needle inserting pipeline 12 and the lesion site to be located in the same vertical plane.

S5, adjusting the inclination angle of the telescopic needle inserting pipeline 12 through the needle inserting angle adjusting structure 11 according to the position of the focus point. The inclination angle of the retractable needle duct 12 is adjusted by changing the elongated length of the first and second retractable rods 111, 112.

S6, the elongation of the second telescopic rod 112 is first determined according to the focal point position, and then the elongation of the first telescopic rod 111 is calculated according to the triangle-like principle, so as to precisely position the needle insertion position and angle.

A coordinate system is established by taking the focus point as a central point, the direction of the extension line of the connecting line of the focus point and the vertical rotating round rod 101 is taken as a Z axis, the connecting line of the focus point vertical to the human rib is taken as an X axis, and the connecting line of the focus point parallel to the human rib is taken as a Y axis. The same vertical plane where the rotatable needle vertical support 10, the needle inserting angle adjusting structure 11, the telescopic needle inserting pipeline 12 and the focus point are located is set as a Z plane.

Referring to fig. 3, a focal point is set to be a point O, a connection intersection point between the focal point and the extended line of the vertical rotary round bar 101 and the second transverse sleeve 103 is a point a, a connection intersection point between the focal point and the extended line of the vertical rotary round bar 101 and the first transverse sleeve is a point B, a connection intersection point between the focal point and the extended line of the retractable needle tube and the second retractable rod 112 is a point C, and a connection intersection point between the focal point and the extended line of the retractable needle tube and the first retractable rod 111 is a point D.

The depth of a focus point is set to be a, the vertical distance from the horizontal plate to the first transverse sleeve is set to be c, the vertical distance from the horizontal plate to the second transverse sleeve is set to be d, the length of the first transverse sleeve is set to be e, and the length of the second transverse sleeve is set to be f. The depth a of the focal point can be obtained by scanning with a CT scanner, that is, the depth a of the focal point is known, the vertical distance c between the horizontal plate and the first transverse sleeve is known, the vertical distance d between the horizontal plate and the second transverse sleeve is known, the length e of the first transverse sleeve is known, and the length f of the second transverse sleeve is known, and the telescopic length of the second telescopic rod is set to be a selectable value g, that is, the telescopic length h of the first telescopic rod can be calculated accordingly. The optional value is just adjusting the flexible length of second telescopic link according to medical personnel's actual experience, can clearly look over the flexible length of adjusting back second telescopic link through the scale on the flexible pole of second.

Wherein OA is a + d, OB is a + c, BD is e + h, and AC is f + g. The length of the AC can be selected according to the telescopic length value of the second telescopic rod, namely, the length of the AC is also a selectable value according to the operation experience of medical staff.

Δ OAC is similar to Δ OBD, and according to the similar triangle principle, the calculation formula is as follows:

the numerical value of h can be calculated by the formula, namely the numerical value of h is a numerical value related to the length value g of the second telescopic rod, namely the length of the second telescopic rod is adjusted according to the adjusted length of the first telescopic rod, the calculation process can be calculated according to a computer, the calculation result is displayed, and medical workers only need to check the result to know the size of the length value of the second telescopic rod after the length value of the first telescopic rod is adjusted.

In actual operation, the second telescopic rod is selected to be stretched to a proper length, the stretching value of the first telescopic rod to be adjusted can be obtained through calculation, and the telescopic needle entering pipeline and the focus point are always in the same straight line after adjustment, so that the accuracy of needle entering of the puncture needle is guaranteed, and the puncture needle can puncture the focus all the time.

The utility model discloses but well flexible length of second telescopic link needs operate according to medical personnel's actual experience, in order to avoid when the numerical value of adjusting the second telescopic link is not then, causes the pjncture needle to pierce the condition of human rib, the utility model discloses vertical length setting with vertical rotation round bar is longer, and OA's vertical length setting is longer promptly, and the adjustable length setting with BD and AC is shorter, and then guarantees that the degree of inclination of every time scalable income needle pipeline is less, and angle COA's angle is less promptly, and then has guaranteed no matter how medical personnel adjust the second telescopic link, the condition of piercing human rib can not appear yet.

When the focus point is positioned under the rib of the human body, the angle of the & lt COA can be properly increased, namely the expansion length value of the second telescopic rod is properly increased. When the focus point is positioned between two ribs of a human body, the angle of the & lt COA can be properly reduced, namely the telescopic length value of the second telescopic rod is properly reduced.

Example 2

Based on embodiment 1, the present embodiment is different from embodiment 1 in that the specific structures of the focal point positioning mechanism and the inclined needle inserting mechanism are changed, as shown in fig. 6 and 7.

The focal point positioning mechanism in this embodiment includes a vertical adjusting column 18 connected to the vertical fixing column 3 via a first universal joint adjusting structure 16, and the position of the vertical adjusting column 18 can be adjusted by adjusting the first universal joint adjusting structure 16, so as to ensure that the position of the vertical adjusting column 18 is directly above the focal point.

The first gimbal adjusting structure 16 includes a first gimbal 161 connected to and disposed on a side wall of the vertical adjusting column 18, a first connecting rod 162 connected to the first gimbal 161, a second gimbal 163 connected to another end of the first connecting rod 162, and a second connecting rod 164 connected to the second gimbal 163, and another end of the second connecting rod 164 is fixedly connected to a connecting sleeve 165. The vertical adjusting column 18 is sleeved in the connecting sleeve 165, threaded positioning holes are respectively formed in the connecting sleeve 165, and the vertical adjusting column 18 and the connecting sleeve 165 are positioned by a positioning screw 176 penetrating through the threaded positioning holes, namely, when the positioning screw 176 is in contact positioning with the vertical adjusting column 18.

When the vertical adjustment post 18 and the connecting sleeve 165 are not positioned, the vertical adjustment post 18 can rotate relative to the connecting sleeve 165, thereby driving the inclined needle insertion mechanism to rotate. Meanwhile, the first universal joint 161 and the second universal joint 163 arranged in the embodiment can ensure that the connecting sleeve 165 and the vertical adjusting column 18 can move at any position right above the ribs of the human body.

The inclined needle inserting mechanism in the embodiment comprises a transverse sliding ruler 19 fixed with the top end of the side wall of the vertical adjusting column 18, a vertical sliding ruler 20 locked and arranged on the transverse sliding ruler 19, an inclined sliding ruler 21 locked and arranged on the transverse sliding ruler 19 and hinged with the vertical sliding ruler 20 at one end, and a needle inserting channel 26 arranged on the inclined sliding ruler 21, wherein the transverse sliding ruler 19, the vertical sliding ruler 20 and the inclined sliding ruler 21 are respectively provided with a sliding groove 24.

Scales are respectively arranged on the transverse sliding ruler 19, the vertical sliding ruler 20 and the inclined sliding ruler 21, the distance between the vertical sliding ruler 20 and the axis of the vertical adjusting column 18 can be directly read on the transverse sliding ruler 19, and the length of the vertical sliding ruler 20 below the joint of the vertical sliding ruler 20 and the transverse sliding ruler 19 can be directly read by the vertical sliding ruler 20.

The transverse sliding ruler 19 and the vertical sliding ruler 20 are positioned by a first locking and positioning structure, and the first locking and positioning structure comprises a first adjusting bolt 27, a first adjustable nut 22 and a first locking nut. The first adjusting bolt 27 passes through the sliding grooves of the horizontal sliding ruler 19 and the vertical sliding ruler 20 respectively. The first locking nut is arranged behind the transverse sliding ruler 19 and is locked and positioned with the first adjusting bolt 27, and the diameter of the first locking nut is larger than the transverse width of the sliding chute. The first adjustable nut 22 is in threaded connection with the first adjusting bolt 27 and is arranged in front of the vertical slide ruler 20, and the diameter of the first adjustable nut 22 is larger than the transverse width of the chute. Whether the locking between the transverse sliding ruler 19 and the vertical sliding ruler 20 is realized or not can be realized by adjusting the first adjustable nut 22.

The inclined sliding ruler 21 and the transverse sliding ruler 19 are positioned by a second locking and positioning structure, and the second locking and positioning structure comprises a second adjusting bolt 28, a second adjustable nut 23 and a second locking nut. The second adjusting bolt 28 passes through the sliding grooves of the lateral sliding ruler 19 and the inclined sliding ruler 21, respectively. A second lock nut is arranged behind the transverse sliding ruler 19 and is locked and positioned with a second adjusting bolt 28, and the diameter of the second lock nut is larger than the transverse width of the sliding chute. The second adjustable nut 23 is in threaded connection with the second adjusting bolt 28 and is arranged in front of the inclined sliding ruler 21, and the diameter of the second adjustable nut 23 is larger than the transverse width of the sliding chute. Whether the transverse sliding ruler 19 is locked or not can be realized with the inclined sliding ruler 21 by adjusting the second adjustable nut 23.

The bottom end of the inclined sliding ruler 21 is hinged with the bottom end of the vertical sliding ruler 20 through a hinge shaft 25.

The needle inlet channel 26 is provided on the inclined slide rule 21, the needle inlet channel 26 is parallel to the side wall of the inclined slide rule 21, and the puncture needle 13 is inserted into the needle inlet channel 26.

In addition, the horizontal plate 5 in this embodiment is positioned and arranged on the side wall of the vertical fixing column 3 through the second universal joint adjusting structure 17, the CT quick positioning scale paper 6 is horizontally laid on the horizontal plate 5, and the top end face of the horizontal plate 5 is also provided with a level gauge.

The second gimbal adjusting structure 17 includes a third gimbal 171 connected to the sidewall of the vertical fixing column 3, a third connecting rod 172 connected to the third gimbal 171, a fourth gimbal 173 connected to the other end of the third connecting rod 172, and a fourth connecting rod 174 connected to the fourth gimbal 173, and the other end of the fourth connecting rod 174 is fixed to the horizontal plate 5.

The bottom of vertical regulation post 18 is provided with infrared distance meter, can measure the interval between the bottom of vertical regulation post 18 and the quick location scale paper of CT.

The present embodiment actually performs the positioning process of the puncture needle as follows.

S1, the patient lies on the bed board 1, and the medical staff adjusts the position of the horizontal plate 5 according to the body type and the fat-thin degree of the patient.

S2, CT scanning is carried out on the chest of the human body by the CT scanning device, and the depth of the focus point and the position of the ruler paper 6 relative to the CT rapid positioning are obtained by the CT scanning device.

And S3, adjusting the position of the vertical adjusting column 18 through the first universal joint adjusting structure 16, and adjusting the vertical adjusting column 18 to be right above the focus point.

S4, referring to fig. 7, the focal point is set to be point O, the connection point between the extension of the connection line between the focal point and the vertical adjusting column 18 and the central axis of the horizontal sliding ruler 19 is set to be point a, the connection point between the central axis of the needle insertion tube 26 and the central axis of the horizontal sliding ruler 19 is set to be point D, the connection point between the right edge of the vertical sliding ruler 20 and the central axis of the horizontal sliding ruler 19 is set to be point B, and the connection point between the right edge of the vertical sliding ruler 20 and the central axis of.

Because the distance between the point A and the bottom end of the vertical adjusting column 18 is a fixed value, the distance between the bottom end of the vertical adjusting column 18 and the CT quick positioning scale paper can be directly measured by an infrared distance measuring instrument, the distance between the CT quick positioning scale paper and the focus point can be obtained by scanning by a CT scanning device, and then the distance between the AO is a calculated value, and the length of the AO is set to be a. Adjusting the positioning position of vertical slide rule 20, i.e., adjusting the lengths of BC and AB, which can be determined by the experience of the medical staff, i.e., BC and AB are determinable values, BC is set at length b, AB is set at length c. On the basis, the determination of the needle insertion position can be obtained by adjustment, the length of AD is set as d, namely the length value of AD is calculated, and the oblique sliding ruler 21 is adjusted according to the value to ensure that the needle insertion position passes through a lesion site.

Δ OAD is similar to Δ CBD, and the calculation formula is as follows according to the similar triangle principle:

the numerical value of d can be calculated by the formula, medical staff can adjust the inclined sliding ruler 21 according to the numerical value of d, and when the inclined sliding ruler 21 is adjusted to the numerical value, the puncture needle can be ensured to pass through a focus point.

Claims (9)

1. Pulmonary nodule locator, its characterized in that: the device comprises a vertical fixing column (3) which is positioned and clamped on a bed plate (1) through a positioning clamping plate (2), wherein a focus point positioning mechanism which can move at any position right above a human body rib (15) and can be positioned right above a focus point is connected and arranged on the vertical fixing column (3), and an inclined needle inserting mechanism which is used for enabling a puncture needle (13) to be obliquely inserted into the position between the human body ribs and can adjust the needle inserting angle is connected and arranged on the focus point positioning mechanism.

2. The pulmonary nodule locator of claim 1, wherein: focus point positioning mechanism can carry out pivoted L type rotary rod (7) that fall on the horizontal plane including rotating the setting on vertical fixed column (3) top, through second location regulation structure (9) scalable connection at scalable L type round bar (8) of falling L type rotary rod (7) one end and vertical rotation set up can rotate to needle vertical stand (10) on scalable L type round bar (8), can rotate to the bottommost of needle vertical stand (10) and be located the focus point directly over, the needle mechanism setting is gone into in the slope can rotate to needle vertical stand (10).

3. The pulmonary nodule locator of claim 2, wherein: the inclined needle inserting mechanism comprises a needle inserting angle adjusting structure (11) which is transversely and telescopically arranged on a rotatable needle vertical support (10) and used for adjusting a needle inserting angle and enabling a puncture needle (13) to be obliquely inserted into a position between ribs of a human body, and a telescopic needle inserting pipeline (12) which is hinged to the tail end of the needle inserting angle adjusting structure (11) and used for penetrating the puncture needle (13); the rotatable needle vertical support (10), the needle inserting angle adjusting structure (11), the telescopic needle inserting pipeline (12) and the focus point are positioned in the same vertical plane vertical to the ribs of the human body.

4. The pulmonary nodule locator of claim 3, wherein: the rotatable needle vertical support (10) comprises a vertical rotating round rod (101) which is vertically rotatably arranged on the top end of the telescopic L-shaped round rod (8), a first transverse sleeve (102) which is transversely fixedly arranged on the top end of the vertical rotating round rod (101) and a second transverse sleeve (103) which is transversely fixedly arranged in the middle of the vertical rotating round rod (101) and is parallel to the vertical rotating round rod (101), wherein the transverse length of the second transverse sleeve (103) is smaller than that of the first transverse sleeve (102), and the vertical rotating round rod (101) is positioned right above a focus point.

5. The pulmonary nodule locator of claim 4, wherein: the needle inserting angle adjusting structure (11) comprises a first telescopic rod (111) which is telescopically arranged on the first transverse sleeve (102) through a third positioning adjusting structure and a second telescopic rod (112) which is telescopically arranged on the second transverse sleeve (103) through a fourth positioning adjusting structure, and the outer ends of the first telescopic rod (111) and the second telescopic rod (112) are respectively and fixedly provided with a hinge seat (113); the vertical rotating round rod (101), the first transverse sleeve (102), the second transverse sleeve (103), the first telescopic rod (111), the second telescopic rod (112), the telescopic needle inserting pipeline (12) and the focus point are located on the same vertical plane.

6. The pulmonary nodule locator of claim 5, wherein: scales for representing the telescopic length are respectively arranged on the side walls of the first telescopic rod (111) and the second telescopic rod (112).

7. The pulmonary nodule locator of claim 5, wherein: the upper side wall and the lower side wall of the retractable needle pipeline (12) are respectively and integrally connected with a hinged positioning seat (114), and the hinged positioning seat (114) is connected with a hinged seat (113) through a hinged shaft (115).

8. The pulmonary nodule locator of claim 1, wherein: the middle part of the vertical fixing column (3) is provided with a horizontal plate (5) positioned right above the bed plate (1) through a first positioning adjusting structure (4), and CT quick positioning scale paper (6) is horizontally laid on the horizontal plate (5).

9. The pulmonary nodule locator of claim 8, wherein: and a level gauge (51) for detecting whether the horizontal plate (5) is in a horizontal state or not so as to ensure the detection precision of the CT scanning device is arranged on the top end surface of the horizontal plate (5).

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