阅读说明：本技术 一种b超探头定位装置 (B-ultrasonic probe positioning device ) 是由 王雪 于 2020-04-21 设计创作，主要内容包括：本发明公开了一种B超探头定位装置,包括限位装置,所述限位装置的左端设有存储装置；通过限位装置,使该B超探头定位装置能够在工作状态和存储状态之间进行转换,通过存储装置,方便人们将该B超探头定位装置调成工作状态,通过存储装置和画圆装置的配合将记号笔与超声探头固定在一起,解决了记号笔容易丢失的问题,通过存储装置、画圆装置、传动装置、固定装置的配合,使该B超探头定位装置能够自动画圈对病变位置进行标记,不容易出现偏差,准确度高,提高了该B超探头定位装置的实用性。(The invention discloses a B-ultrasonic probe positioning device, which comprises a limiting device, wherein a storage device is arranged at the left end of the limiting device; through stop device, make this B ultrasonic probe positioner can change between operating condition and memory state, through storage device, make things convenient for people to transfer this B ultrasonic probe positioner into operating condition, cooperation through storage device and drawing circle device is together fixed with marker pen and ultrasonic probe, the problem that the marker pen loses easily has been solved, through storage device, drawing circle device, transmission, fixing device's cooperation, make this B ultrasonic probe positioner can mark the pathological change position by automatic drawing circle, be difficult to the deviation appears, the degree of accuracy is high, the practicality of this B ultrasonic probe positioner has been improved.)

1. The utility model provides a B ultrasonic probe positioner, includes stop device (1), its characterized in that: and a storage device (2) is arranged at the left end of the limiting device (1).

2. The ultrasonic B probe positioning device of claim 1, wherein: stop device (1) is including handheld sleeve pipe (11), the fixed cover of right-hand member of handheld sleeve pipe (11) has connect rubber sleeve (12), the top surface of handheld sleeve pipe (11) has been seted up and has been located left spout (13) of rubber sleeve (12), the right flank of handheld sleeve pipe (11) inner chamber is connected with piston plate (15) through spacing spring (14) transmission, piston plate (15) and the inner wall sliding connection who holds sleeve pipe (11), the left surface fixed connection of piston plate (15) has stopper (16), the left end of stopper (16) extends to the outside of holding sleeve pipe (11), the top surface fixed connection of stopper (16) has push rod (17), the top of push rod (17) is passed spout (13) and is extended to the outside of holding sleeve pipe (11).

3. The ultrasonic B probe positioning device of claim 1, wherein: the storage device (2) comprises a storage cylinder (201), the right side surface of the storage cylinder (201) is fixedly connected with the left end of a handheld sleeve (11), the left end of a limiting head (16) extends into the storage cylinder (201), a circle drawing device (3) is arranged outside the storage cylinder (201), a transmission device (4) is arranged on the inner wall of the storage cylinder (201), a lifting strip (202) is movably inserted on the top surface of the storage cylinder (201), the top end of the lifting strip (202) is fixedly connected with a pressure plate (203), a limiting groove (204) is formed in the right side surface of the lifting strip (202), the limiting groove (204) is matched with the limiting head (16), a ratchet groove (205) is formed in the left side surface of the lifting strip (202), a fixing plate (206) is fixedly connected to the front surface of the lifting strip (202), a lifting spring (207) is fixedly connected to the top surface of the fixing plate (206), and the top end of the lifting spring (207) is fixedly connected with the top surface of the inner cavity of the, bottom fixedly connected with guide piston (208) of lifter bar (202), inner wall sliding connection of guide piston (208) and storage cylinder (201), the bottom surface fixedly connected with ultrasonic probe (209) of guide piston (208), fixedly connected with signal transmission line (210) on ultrasonic probe (209), the other end of signal transmission line (210) runs through guide piston (208) and extends out from the top surface of storage cylinder (201), movable sleeve has rotary rod (211) on the inner wall of storage cylinder (201), the external fixation of rotary rod (211) has cup jointed drive gear (212) and drive bevel gear (213), drive gear (212) and tooth's socket ratchet (205) one-way toothing.

4. A B-ultrasonic probe positioning device according to claim 3, wherein: the circle drawing device (3) comprises an outer cylinder (31) and embedded grooves (32), the outer cylinder (31) is fixedly sleeved outside the storage cylinder (201), the number of the embedded grooves (32) is four, two of the four embedded grooves (32) are divided into two groups, two embedded grooves (32) in the same group are correspondingly arranged on the surface of the storage cylinder (201) and the inner wall of the outer cylinder (31), baffle rings (33) are fixedly embedded inside the embedded grooves (32), a centering ring (34) is arranged in an interlayer between the storage cylinder (201) and the outer cylinder (31), the centering ring (34) is in sliding connection with the surface of the storage cylinder (201) and the inner wall of the outer cylinder (31), the bottom surface of the centering ring (34) is in sliding connection with the top surface of the corresponding baffle ring (33), the top surface of the centering ring (34) is fixedly connected with a linkage rod (35), and the top end of the linkage rod (35) is fixedly connected with a gear ring (36), the gear ring (36) is in sliding connection with the surface of the storage cylinder (201) and the inner wall of the outer cylinder (31), the bottom surface of the gear ring (36) is in sliding connection with the top surface of the corresponding baffle ring (33), and the fixing device (5) is arranged on the bottom surface of the gear ring (36).

5. A B-ultrasonic probe positioning device according to claim 3, wherein: the transmission device (4) comprises a push rod (400) and a shell (401), the bottom end of the push rod (400) is fixedly connected to the top surface of the guide piston (208), the left side surface of the shell (401) is fixedly connected with the left side surface of the inner cavity of the storage cylinder (201), a rotating shaft (402) is movably inserted into the left side surface of the shell (401), the left end of the rotating shaft (402) extends into the outer cylinder (31) and is fixedly sleeved with a transmission gear (403), the transmission gear (403) is meshed with the gear ring (36), the right end of the rotating shaft (402) extends into the shell (401) and is fixedly connected with a hollow gear (404), the right side surface of the hollow gear (404) is movably inserted with a transmission rod (405), the right end of the transmission rod (405) extends into the outer part of the shell (401) and is fixedly sleeved with a driven bevel gear (406), and the driven bevel gear (406), a limiting ratchet wheel (414) is fixedly sleeved at the left end of the transmission rod (405), a limiting elastic sheet (415) is fixedly connected to the bottom surface of the inner cavity of the hollow gear (404), the end of the limiting elastic sheet (415) is in one-way meshing with the limiting ratchet wheel (414), a clockwork spring (407) is movably sleeved outside the transmission rod (405), one end of the clockwork spring (407) is fixedly connected with the surface of the transmission rod (405), the other end of the clockwork spring (407) is fixedly connected with the inner wall of the hollow gear (404), a penetrating slot (408) is formed in the bottom surface of the shell (401), a positioning plate (409) is fixedly connected to the bottom surface of the shell (401), a fixing rod (410) is movably sleeved on the positioning plate (409), a Z-shaped plate (411) is movably sleeved outside the fixing rod (410), the right end of the Z-shaped plate (411) corresponds to the top end, the limiting plate (412) is movably inserted into the inserting groove (408) and matched with the hollow gear (404), the bottom surface of the Z-shaped plate (411) is fixedly connected with a pulling spring (413), and the other end of the pulling spring (413) is fixedly connected with the inner wall of the storage cylinder (201).

6. The ultrasonic B probe positioning device of claim 4, wherein: the fixing device (5) comprises an adapter rod (51), the top end of the adapter rod (51) is fixedly connected with the bottom surface of the gear ring (36), the bottom end of the adapter rod (51) is fixedly connected with a buffer cylinder (52), the buffer cylinder (52) is in sliding connection with the surface of the storage cylinder (201) and the inner wall of the outer cylinder (31), the top surface of the inner cavity of the buffer cylinder (52) is in transmission connection with a buffer piston (54) through a buffer spring (53), the buffer piston (54) is in sliding connection with the inner wall of the buffer cylinder (52), the bottom surface of the buffer piston (54) is fixedly connected with a buffer column (55), the bottom end of the buffer column (55) extends to the outside of the buffer cylinder (52) and is fixedly connected with a rubber column (56), a conical hole (57) is formed in the bottom surface of the rubber column (56), an insertion hole (58) is formed in the top surface of the inner cavity of the conical hole (57), and, the bottom end of the marking pen (59) penetrates through the righting ring (34) and extends to the outside of the outer cylinder (31).

Technical Field

The invention relates to the field of medical instruments, in particular to a B-ultrasonic probe positioning device.

Background

When people speak or sing, the sound heard by people is called sound wave, the frequency of the sound wave is 50-10000 Hz and exceeds 20000Hz, the sound wave can not be heard by human ears, the sound wave is called ultrasonic wave, the ultrasonic wave is called ultrasonic wave for short, the directivity of the ultrasonic wave is good, the reflecting capacity is strong, more concentrated sound energy can be easily obtained, the propagation distance in water is far away than that in air, the sound wave can be used for distance measurement, speed measurement, cleaning, welding, stone breaking, sterilization and disinfection and the like, the sound wave has a plurality of applications in medicine, military, industry and agriculture, for example, a B ultrasonic machine used in the medical field is formed by combining a machine body and a B ultrasonic probe, during the use process of the B ultrasonic machine, firstly, an ultrasonic couplant is coated on the skin surface of an examined part of a patient, then the ultrasonic probe is swept on the skin with the couplant, the condition of tissues under the skin is examined through a monitor, the, when the lesion position is found, a doctor usually pinches the lesion position with fingers on the surface of the skin right above the lesion tissue with force to make the skin have red indentations, the red indentations are used as marks during the operation, the pinches are light, the indentations cannot be found due to the elasticity of the skin during the operation, the positioning cannot be realized, the pinches are heavy, the patient feels pain, and people usually mark the lesion position by using a marking pen to mark the lesion position.

At present marker pen and B ultrasonic probe are separately, during the use, at first use B ultrasonic probe to survey pathological change position, remove B ultrasonic probe after finding the pathological change position, then use marker pen to draw a circle in pathological change position on patient's skin and mark, from this mark guide operation, however, this kind of split type design has the problem that the marker pen is lost easily, and remove B ultrasonic probe after and carry out the mark by the staff by virtue of remembering manually, produce the deviation easily, therefore need to design a B ultrasonic probe positioner urgently.

Disclosure of Invention

1. Technical problem to be solved

The invention aims to provide a B-ultrasonic probe positioning device which can well solve the problems in the prior art that a marker pen and a B-ultrasonic probe are separated, when the B-ultrasonic probe positioning device is used, the B-ultrasonic probe is firstly used for detecting a lesion position, the B-ultrasonic probe is moved away after the lesion position is found, and then the marker pen is used for drawing a circle at the lesion position on the skin of a patient to mark the lesion position, so that the mark can guide an operation.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A B-ultrasonic probe positioning device comprises a limiting device, wherein a storage device is arranged at the left end of the limiting device.

Preferably, stop device includes handheld sleeve pipe, the fixed cover of handheld sheathed tube right-hand member has connect the rubber sleeve, handheld sheathed tube top surface has been seted up and has been located the left spout of rubber sleeve, the right flank of handheld sleeve pipe inner chamber is connected with the piston board through spacing spring transmission, piston board and handheld sheathed tube inner wall sliding connection, the left surface fixed connection of piston board has the spacing head, the left end of spacing head extends to handheld sheathed tube outside, the top surface fixedly connected with push rod of spacing head, the top of push rod is passed the spout and is extended to handheld sheathed tube outside.

Preferably, the storage device comprises a storage cylinder, the right side surface of the storage cylinder is fixedly connected with the left end of the handheld sleeve, the left end of the limiting head extends into the storage cylinder, a circle drawing device is arranged outside the storage cylinder, a transmission device is arranged on the inner wall of the storage cylinder, a lifting strip is movably inserted on the top surface of the storage cylinder, the top end of the lifting strip is fixedly connected with a pressure plate, the right side surface of the lifting strip is provided with a limiting groove, the limiting groove is matched with the limiting head, the left side surface of the lifting strip is provided with a ratchet groove, the front surface of the lifting strip is fixedly connected with a fixed plate, the top surface of the fixed plate is fixedly connected with a lifting spring, the top end of the lifting spring is fixedly connected with the top surface of the inner cavity of the storage cylinder, the bottom end of the lifting strip is fixedly connected with a guide piston, the guide piston is slidably connected with the inner wall of the storage cylinder, the bottom, the other end of the signal transmission line penetrates through the guide piston and extends out of the top surface of the storage cylinder, the inner wall of the storage cylinder is movably sleeved with a rotating rod, a driving gear and a driving bevel gear are fixedly sleeved outside the rotating rod, the driving gear is composed of a central disc and a meshing elastic sheet, and the driving gear is meshed with the ratchet groove in a one-way mode.

Preferably, the circle drawing device comprises an outer barrel and embedded grooves, the outer barrel is fixedly sleeved outside the storage barrel, the number of the embedded grooves is four, two of the four embedded grooves are divided into two groups, two embedded grooves in the same group are correspondingly arranged on the surface of the storage barrel and the inner wall of the outer barrel, retaining rings are fixedly embedded inside the embedded grooves, steel balls are movably embedded on the top surfaces of the retaining rings, stabilizing rings are arranged in an interlayer between the storage barrel and the outer barrel, the stabilizing rings are connected with the surface of the storage barrel and the inner wall of the outer barrel in a sliding mode, the bottom surfaces of the stabilizing rings are connected with the top surfaces of the corresponding retaining rings in a sliding mode, linkage rods are fixedly connected with the top surfaces of the stabilizing rings, gear rings are fixedly connected with the top ends of the linkage rods, the gear rings are connected with the surface of the storage barrel and the inner wall of the outer barrel in a sliding mode, the bottom surfaces of the gear rings are connected.

Preferably, the transmission device comprises an ejector rod and a shell, the bottom end of the ejector rod is fixedly connected to the top surface of the guide piston, the left side surface of the shell is fixedly connected with the left side surface of the inner cavity of the storage cylinder, a rotating shaft is movably inserted into the left side surface of the shell, the left end of the rotating shaft extends into the outer cylinder and is fixedly sleeved with a transmission gear, the transmission gear is meshed with the gear ring, the right end of the rotating shaft extends into the shell and is fixedly connected with a hollow gear, a transmission rod is movably inserted into the right side surface of the hollow gear, the right end of the transmission rod extends to the outside of the shell and is fixedly sleeved with a driven bevel gear, the driven bevel gear is meshed with the driving bevel gear, the left end of the transmission rod is fixedly sleeved with a limiting ratchet gear, the bottom surface of the inner cavity of the hollow gear is fixedly, the one end of clockwork spring and the fixed surface of transfer line are connected, the other end of clockwork spring and hollow gear's inner wall fixed connection, the slot of wearing has been seted up on the bottom surface of shell, fixedly connected with locating plate on the bottom surface of shell, the dead lever has been cup jointed in the activity on the locating plate, the Z template has been cup jointed in the outside activity of dead lever, the right-hand member of Z template is corresponding with the top of ejector pin, the left end fixedly connected with limiting plate of Z template top surface, the limiting plate activity alternates in the inside of wearing the slot and with hollow gear looks adaptation, fixedly connected with tractive spring on the bottom surface of Z template, the other end of.

Preferably, fixing device includes the switching pole, the top of switching pole and the bottom surface fixed connection of ring gear, the bottom fixedly connected with buffer cylinder of switching pole, the equal sliding connection of surface of buffer cylinder and a storage cylinder and the inner wall of urceolus, the top surface of buffer cylinder inner chamber is connected with buffer piston through the buffer spring transmission, buffer piston and buffer cylinder's inner wall sliding connection, buffer piston's bottom surface fixedly connected with cushion post, buffer post's bottom extends to buffer cylinder's outside and fixedly connected with rubber column, the bell mouth has been seted up on the bottom surface of rubber column, the spliced eye has been seted up to the top surface of bell mouth inner chamber, the inside activity of spliced eye is pegged graft and is had the marker pen, marker pen and spliced eye interference fit, the bottom of marker pen is run through and is right the ring and extend to the outside of urceolus, the marker pen activity is peg.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

through stop device, make this B ultrasonic probe positioner can change between operating condition and memory state, through storage device, make things convenient for people to transfer this B ultrasonic probe positioner into operating condition, cooperation through storage device and drawing circle device is together fixed with marker pen and ultrasonic probe, the problem that the marker pen loses easily has been solved, through storage device, drawing circle device, transmission, fixing device's cooperation, make this B ultrasonic probe positioner can mark the pathological change position by automatic drawing circle, be difficult to the deviation appears, the degree of accuracy is high, the practicality of this B ultrasonic probe positioner has been improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the internal structure of the limiting device shown in FIG. 1 according to the present invention;

FIG. 4 is a schematic view of the internal structure of the transmission of FIG. 2 according to the present invention;

FIG. 5 is a schematic view of the internal structure of the fixing device shown in FIG. 2 according to the present invention;

FIG. 6 is a right side view of the ratchet-toothed limit wheel of FIG. 4 according to the present invention;

fig. 7 is a view showing the structure of the driving gear of fig. 2 according to the present invention.

The reference numbers in the figures illustrate:

1. a limiting device; 11. a hand-held cannula; 12. a rubber sleeve; 13. a chute; 14. a limiting spring; 15. a piston plate; 16. a limiting head; 17. a push rod; 2. a storage device; 201. a storage cylinder; 202. a lifting bar; 203. a platen; 204. a limiting groove; 205. a ratchet groove; 206. a fixing plate; 207. a lift spring; 208. a pilot piston; 209. an ultrasonic probe; 210. a signal transmission line; 211. rotating the rod; 212. a drive gear; 213. a drive bevel gear; 3. a circle drawing device; 31. an outer cylinder; 32. embedding a groove; 33. a baffle ring; 34. a righting ring; 35. a linkage rod; 36. a ring gear; 4. a transmission device; 400. a top rod; 401. a housing; 402. a rotating shaft; 403. a transmission gear; 404. a hollow gear; 405. a transmission rod; 406. a driven bevel gear; 407. a clockwork spring; 408. inserting the slot; 409. positioning a plate; 410. fixing the rod; 411. a Z-shaped plate; 412. a limiting plate; 413. a tension spring; 414. a limiting ratchet gear; 415. a limiting elastic sheet; 5. a fixing device; 51. a transfer lever; 52. a buffer cylinder; 53. a buffer spring; 54. a cushion piston; 55. a buffer column; 56. a rubber column; 57. a tapered hole; 58. inserting holes; 59. a marking pen.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; rather than all embodiments. Based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

Referring to fig. 1-7, a B-ultrasonic probe positioning device includes a position-limiting device 1, and a storage device 2 is disposed at the left end of the position-limiting device 1.

Stop device 1 includes handheld sleeve pipe 11, the fixed cover of right-hand member of handheld sleeve pipe 11 has been connect rubber sleeve 12, the top surface of handheld sleeve pipe 11 has been seted up and has been located the left spout 13 of rubber sleeve 12, the right flank of handheld sleeve pipe 11 inner chamber is connected with piston plate 15 through spacing spring 14 transmission, piston plate 15 and handheld sleeve pipe 11's inner wall sliding connection, piston plate 15's left surface fixed connection has spacing head 16, the left end of spacing head 16 extends to handheld sleeve pipe 11's outside, spacing head 16's top surface fixedly connected with push rod 17, the top of push rod 17 is passed spout 13 and is extended to handheld sleeve pipe 11's outside.

The storage device 2 comprises a storage cylinder 201, the right side surface of the storage cylinder 201 is fixedly connected with the left end of a handheld sleeve 11, the left end of a limiting head 16 extends into the storage cylinder 201, a circle drawing device 3 is arranged outside the storage cylinder 201, a transmission device 4 is arranged on the inner wall of the storage cylinder 201, a lifting strip 202 is movably inserted on the top surface of the storage cylinder 201, the top end of the lifting strip 202 is fixedly connected with a pressure plate 203, the right side surface of the lifting strip 202 is provided with a limiting groove 204, the limiting groove 204 is matched with the limiting head 16, the left side surface of the lifting strip 202 is provided with a ratchet groove 205, the front surface of the lifting strip 202 is fixedly connected with a fixing plate 206, the top surface of the fixing plate 206 is fixedly connected with a lifting spring 207, the top end of the lifting spring 207 is fixedly connected with the top surface of an inner cavity of the storage cylinder 201, the bottom end of the lifting strip 202 is fixedly connected with a guide piston 208, the guide piston 208 is, the ultrasonic probe 209 is fixedly connected with a signal transmission line 210, the other end of the signal transmission line 210 penetrates through the guide piston 208 and extends out of the top surface of the storage cylinder 201, the inner wall of the storage cylinder 201 is movably sleeved with a rotating rod 211, the outside of the rotating rod 211 is fixedly sleeved with a driving gear 212 and a driving bevel gear 213, the driving gear 212 is composed of a central disc and a meshing elastic sheet, and the driving gear 212 is in one-way meshing with the ratchet groove 205.

The circle drawing device 3 comprises an outer cylinder 31 and embedded grooves 32, the outer cylinder 31 is fixedly sleeved outside a storage cylinder 201, the number of the embedded grooves 32 is four, two embedded grooves 32 are divided into two groups by taking two embedded grooves as a group, two embedded grooves 32 in the same group are correspondingly arranged on the surface of the storage cylinder 201 and the inner wall of the outer cylinder 31, retaining rings 33 are fixedly embedded inside the embedded grooves 32, steel balls are movably embedded on the top surfaces of the retaining rings 33, a centering ring 34 is arranged in an interlayer between the storage cylinder 201 and the outer cylinder 31, the centering ring 34 is in sliding connection with the surface of the storage cylinder 201 and the inner wall of the outer cylinder 31, the bottom surfaces of the centering rings 34 are in sliding connection with the top surfaces of the corresponding retaining rings 33, the top surfaces of the centering rings 34 are fixedly connected with linkage rods 35, the top ends of the linkage rods 35 are fixedly connected with gear rings 36, the gear rings 36 are in sliding connection with the surfaces of the storage cylinder 201 and the inner wall of the outer cylinder 31, and the bottom surfaces, the bottom surface of the ring gear 36 is provided with a fixing device 5.

The transmission device 4 comprises a top rod 400 and a shell 401, the bottom end of the top rod 400 is fixedly connected to the top surface of the guide piston 208, the left side surface of the shell 401 is fixedly connected with the left side surface of the inner cavity of the storage cylinder 201, a rotating shaft 402 is movably inserted on the left side surface of the shell 401, the left end of the rotating shaft 402 extends into the outer cylinder 31 and is fixedly sleeved with a transmission gear 403, the transmission gear 403 is meshed with a gear ring 36, the right end of the rotating shaft 402 extends into the shell 401 and is fixedly connected with a hollow gear 404, a transmission rod 405 is movably inserted on the right side surface of the hollow gear 404, the right end of the transmission rod 405 extends out of the shell 401 and is fixedly sleeved with a driven bevel gear 406, the driven bevel gear 406 is meshed with a driving bevel gear 213, the left end of the transmission rod 405 is fixedly sleeved with a limiting ratchet gear 414, the bottom surface of the inner cavity of the, a spiral spring 407 is sleeved outside the transmission rod 405, one end of the spiral spring 407 is fixedly connected with the surface of the transmission rod 405, the other end of the spiral spring 407 is fixedly connected with the inner wall of the hollow gear 404, a through slot 408 is formed in the bottom surface of the shell 401, a positioning plate 409 is fixedly connected to the bottom surface of the shell 401, a fixing rod 410 is movably sleeved on the positioning plate 409, a Z-shaped plate 411 is sleeved outside the fixing rod 410, the right end of the Z-shaped plate 411 corresponds to the top end of the ejector rod 400, a limiting plate 412 is fixedly connected to the left end of the top surface of the Z-shaped plate 411, the limiting plate 412 is movably inserted inside the through slot 408 and is matched with the hollow gear 404, a traction spring 413 is fixedly connected to the bottom surface of the Z-shaped plate 411.

Fixing device 5 includes adapter rod 51, adapter rod 51's top and the bottom surface fixed connection of ring gear 36, adapter rod 51's bottom fixedly connected with buffer cylinder 52, buffer cylinder 52 and the equal sliding connection of the surface of a storage cylinder 201 and the inner wall of urceolus 31, the top surface of buffer cylinder 52 inner chamber is connected with buffer piston 54 through buffer spring 53 transmission, buffer piston 54 and buffer cylinder 52's inner wall sliding connection, buffer piston 54's bottom surface fixedly connected with buffering post 55, the bottom of buffering post 55 extends to buffer cylinder 52's outside and fixedly connected with rubber column 56, bell mouth 57 has been seted up on rubber column 56's the bottom surface, jack 58 has been seted up to the top surface of bell mouth 57 inner chamber, the inside activity of jack 58 is pegged graft there is marker 59, marker 59 and jack 58 interference fit, marker 59's bottom run through the outside of righting ring 34 and extending to urceolus 31, marker 59 activity is pegged graft on righting ring 34.

The working principle is as follows:

firstly, the lifting bar 202 is pressed by the pressure plate 203, the lifting bar 202 drives the fixing plate 206 and the guide piston 208 to move downwards, then the fixing plate 206 pulls the lifting spring 207 downwards to increase the elastic potential energy of the lifting spring 207, simultaneously the guide piston 208 drives the ultrasonic probe 209 to move downwards, then the ultrasonic probe 209 moves to the outside of the storage cylinder 201, then the limit groove 204 is opposite to the end part of the limit head 16, then the piston plate 15 drives the limit head 16 to move leftwards under the elastic force of the limit spring 14, then the left end of the limit head 16 is inserted into the limit groove 204 to clamp the lifting bar 202, further the ultrasonic probe 209 is fixed, at the moment, the position height of the lowest point of the ultrasonic probe 209 is lower than that of the lowest point of the marker pen 59, at the same time, the guide piston 208 drives the ejector rod 400 to move downwards to gradually release the limit of the ejector rod 400 on the Z-shaped plate 411, then the limit plate 411 drives the limit plate 412 to drive the fixing rod 410 to move downwards under The hour hand rotates, then the limit plate 412 is meshed with the hollow gear 404 to fix the hollow gear 404, then the lifting bar 202 drives the transmission rod 405 to rotate through the meshing action of the ratchet groove 205 and the driving gear 212 and the meshing action of the driving bevel gear 213 and the driven bevel gear 406, the transmission rod 405 works the spring 407 to increase the elastic potential energy of the spring 407, so that the B-ultrasonic probe positioning device is in a working state, then the B-ultrasonic probe positioning device is held by the limiting device 1 to move on the skin of a patient and detect, the B-ultrasonic probe positioning device stops moving after the detected position is found, then the push rod 17 is pushed rightwards, the push rod 17 drives the limit head 16 to move rightwards, then the limit head 16 is separated from the limit groove 204 to remove the limit of the lifting bar 202, and then the lifting spring 207 drives the ultrasonic probe 209, the fixed plate 206, the lifting bar 202 and the guide piston 208 under the self elastic, The top rod 400 moves towards the inside of the storage cylinder 201, namely moves upwards, in the process, the meshing elastic sheet is bent and deformed and can not be effectively meshed with the ratchet groove 205, transmission can not be carried out, meanwhile, the limiting elastic sheet 415 clamps the limiting ratchet wheel 414, so that the transmission rod 405 is fixed, the reverse rotation of the transmission rod 405 is avoided, then the position height of the lowest point on the marker 59 is lower than the position height of the lowest point on the ultrasonic probe 209, at the moment, the bottom end of the marker 59 is separated from contact with the skin of the patient, then the ultrasonic probe 209 moves completely to the inside of the storage cylinder 201, then the bottom surface of the storage cylinder 201 is contacted with the skin of the patient, then the buffer spring 53 applies pressure to the marker 59 through the buffer piston 54, the buffer column 55 and the rubber column 56 under the action of the self elastic force, so that the bottom end of the marker 59 is pressed on the skin of the patient, and meanwhile, the top end of the, then the Z-shaped plate 411 drives the limit plate 412 to rotate anticlockwise, then the limit plate 412 is separated from the hollow gear 404, then the hollow gear 404 drives the marker 59 to move circularly through the meshing action of the rotating shaft 402, the transmission gear 403 and the gear ring 36 and the fixing device 5 under the action of the torque force of the spring 407, then the marker 59 performs the circling marking action, and after the circling marking is finished, the B-ultrasonic probe positioning device is taken away, and the B-ultrasonic probe positioning device is used.

The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.