A prostate puncture imaging device for MRI diagnostic instrument

Abstract

The present invention relates to a prostate puncture imaging device for an MRI diagnostic instrument, comprising a housing, a coil assembly built in the housing, an amplifier built in the housing and connected to the coil assembly through a matching plate, and a puncture mechanism movably mounted on a first housing of the housing, and strap buckles are also provided on both sides of the first housing of the housing, and the straps are installed on the first housing through the strap buckles on both sides; the housing is bent and fits along the lower abdomen, perineum, and back waist of the human body, and the human body is further fixed by the straps to collect signals of the fitted parts, and the puncture mechanism is closely attached to the perineum of the human body. The device provided by the present invention performs magnetic resonance imaging on the prostate part, and the provided image is clear and stable, and it is also convenient for medical personnel to perform puncture actions.

Description

Technical Field

[0001] The invention relates to the field of magnetic resonance imaging, and in particular to a prostate puncture imaging device used for an MRI diagnostic instrument. Background Art

[0002] Prostate disease is a common disease in adult men, usually referring to prostatitis, prostate hyperplasia and prostate cancer. Currently, the examinations for prostate disease include rectal examination, ultrasound, X-ray examination, tissue examination, lower urinary tract urinary activity mechanics examination, prostate fluid examination, CT and MRI examinations. Magnetic resonance imaging has become an effective means to assist doctors in diagnosis due to its high sensitivity. MRI is superior to CT in showing the invasion of fat tissue near the trachea of ​​the disease, the internal tissue structure of the prostate, and the central and peripheral areas and transitional areas.

[0003] In addition, prostate puncture biopsy can obtain prostate tissue, which is an important means of diagnosing prostate cancer. There are two puncture routes: transperineal and transrectal. Currently available diagnostic equipment cannot have both imaging and puncture functions. Summary of the invention

[0004] The purpose of the present invention is to provide a prostate puncture imaging device for an MRI diagnostic instrument, which is convenient for fixing a patient and simultaneously performs magnetic resonance imaging detection and puncture biopsy on the prostate of the patient.

[0005] The technical solution of the present invention is: a prostate puncture imaging device for MRI diagnostic instrument, which is special in that it includes a housing, a coil assembly, an amplifier and a puncture mechanism;

[0006] The shell comprises a first shell, a second shell, and a third shell which are sequentially spliced, and further comprises strap buckles symmetrically mounted on both sides of the first shell and straps passing through the strap buckles on both sides and mounted on the first shell, wherein the second shell is made of a bendable flexible material;

[0007] The coil assembly is fixed in the housing and is made of flexible material as a whole;

[0008] The amplifier is fixed in the housing and connected to each coil unit of the coil assembly via a matching plate;

[0009] The puncture mechanism is movably mounted on the first shell and is located close to the second shell;

[0010] After being bent, the shell body is attached to the lower abdomen, perineum and rear waist of the human body so as to collect signals from the attached parts, and the puncture mechanism is closely attached to the perineum of the human body.

[0011] Preferably, the second shell is made of a thin soft sponge material covered with leather or a flexible foaming material, the second shell is designed in a segmented shape, and the width of the second shell is smaller than the width of the first shell or the third shell;

[0012] The coil assembly is made of a flexible substrate, and the radio frequency coil device is overall soft and easy to bend, and can be closely attached to the imaging part.

[0013] Preferably, a pair of racks are provided on both sides of the first shell, and the pair of racks on the same side have the same structure and are mirror-imaged; a fixing hole is provided on the strap buckle, and the strap buckle is installed on both sides of the first shell through the cooperation between the fixing hole and the rack.

[0014] Preferably, the strap buckle comprises a buckle body, an unlocking button, a buckle block, a first return spring, and a side cover; a fixing hole is formed at a position of the strap buckle corresponding to the rack; a buckle mounting groove is formed at a side of the fixing hole; a slide groove is formed on a side wall of the buckle mounting groove; the buckle block is movably mounted in the buckle mounting groove through the slide groove; the unlocking button is mounted above the buckle mounting groove; and the side cover is mounted on both sides of the strap buckle through a fixing element;

[0015] The cross section of the buckle block is in a right-angle trapezoidal shape, and the upper surface is a downwardly inclined inclined surface design. The inner side of the buckle block is convexly provided with straight teeth that cooperate with the rack, and the two sides are convexly provided with protrusions that cooperate with the slide groove. The outer side is concavely provided with a slot hole, and the first return spring is placed in the slot hole, with one end abutting against the inner wall of the slot hole and the other end abutting against the inner wall of the side cover;

[0016] The lower surface below the unlocking button is designed as a slope inclined downward. The unlocking button moves downward, pushing the buckle block to move outward, thereby releasing the lock between the spur teeth and the rack, and the strap buckle can move relative to the rack.

[0017] Preferably, the puncture mechanism comprises a housing, a sliding mounting member, a lifting guide rail, a puncture assembly, and a plurality of positioning assemblies;

[0018] The housing comprises a front housing and a rear housing connected by a fixing element, a fixing column is convexly provided on the bottom surface of the rear housing, a fixing pin is also penetrated at the lower end of the fixing column, a through hole is also transversely penetrated on the front housing and the rear housing, a first guide groove is also penetrated on both sides of the through hole of the rear housing, and a plurality of positioning pits are also equidistantly concavely provided on the inner side wall of the rear housing between the first guide groove and the through hole;

[0019] The sliding mounting member is mounted on the bottom surface of the housing, and includes a sliding plate sleeved on the fixing column, a sliding round cap mounted on the lower end of the fixing column through a fixing pin, and a spring sleeved on the fixing column and located between the sliding plate and the sliding round cap;

[0020] The lifting guide rails are fixed on both sides of the housing, and a second guide groove is provided in the center of the lifting guide rails;

[0021] The puncture assembly includes a puncture inverted sliding bracket and a plurality of puncture guide blocks, the puncture inverted sliding bracket is evenly arrayed with a plurality of grille holes for installing the puncture guide blocks, the front of the puncture inverted sliding bracket and located on both sides of the grille hole are sequentially protruded from top to bottom with a first guide block, a wedge block, and a second guide block, the inner sides of the first guide block and the second guide block are respectively protruded with a boss that cooperates with the second guide groove, the rear of the puncture inverted sliding bracket and located on both sides of the grille hole are protruded with a positioning groove, and the puncture inverted sliding bracket also extends backward with a pair of adjustment columns that cooperate with the first guide groove;

[0022] The positioning assembly includes a spring pressure plate, a second return spring, and a positioning column. The spring pressure plate is fixed to the front of the puncture sliding bracket through a fixing element and is located between the first guide block and the second guide block. The second return spring and the positioning column are inserted into the positioning groove. One end of the second return spring abuts against the spring pressure plate, and the other end abuts against the positioning column.

[0023] Preferably, the rear side of the second guide groove is penetrated by a first mounting hole and a second mounting hole respectively, and the boss enters the second guide groove along the first mounting hole and the second mounting hole respectively, so that the piercing sliding bracket is movably installed between the two lifting guide rails.

[0024] Preferably, the puncture guide block is provided with a plurality of puncture holes for the puncture needle to pass through.

[0025] Preferably, a support is convexly provided on the upper surface of the first shell and located near the second shell, and the support is provided with a puncture mechanism installation groove cooperating with the sliding installation member from the back to the front, and a plurality of mutually parallel card grooves are also concavely provided on the top surface of the support;

[0026] The back of the rear shell of the puncture mechanism is also hinged with a card through a rotating shaft. The puncture mechanism is movably installed on the support through a sliding mounting piece. The positioning of the puncture mechanism is completed by the cooperation between the card and the card slot, so that the puncture mechanism is closely attached to the perineum of the human body.

[0027] Preferably, a straight slot hole runs through the center of the card, and the straight slot hole cooperates with the rotating shaft to hinge the card to the back side of the rear shell of the puncture mechanism.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] (1) The housing of the device provided by the present invention is made of flexible material, and is used in conjunction with a coil assembly of a soft substrate. The whole can be bent and completely fit the perineum of the patient, and the patient can be further fixed with a strap to improve the imaging accuracy;

[0030] (2) The present invention movably mounts the puncture mechanism at the support of the first shell. When the shell wraps the perineum of the patient, the position of the puncture mechanism is adjusted so that it can fit closely to the perineum of the patient, so as to facilitate medical personnel to perform puncture biopsy on the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of the device of the present invention;

[0032] Figure 2 is an exploded schematic diagram of the strap buckle of the present invention;

[0033] Figure 3 is an exploded schematic diagram of the puncture mechanism of the present invention;

[0034] Figure 4 It is a cross-sectional schematic diagram about the puncture mechanism and production;

[0035] Figure 5 It is a schematic diagram of the arrangement structure of the coil assembly of the present invention;

[0036] Figure 6 It is another schematic diagram of the arrangement structure of the coil assembly of the present invention.

[0037] Main component symbols

[0038] 11 First Shell 111 rack 112 support 1121 puncture mechanism installation slot 1122 card slot 12 Second shell 13Third Shell 14 strap buckle 141 Buckle body 1411 fixing hole 1412 strap mounting hole 1413 around the rod 142 Unlock button 143 snap block 144 first return spring 145 side cover 15 straps 2Puncture mechanism 211 front shell 212 back shell 2121 first guide groove 213 fixed column 214 fixed pin 215 shaft 216 Cards 2161 straight slot hole 221 Sliding Plate 222 Sliding Round Cap 223 Spring 23 lifting rails 231 second guide groove 232 first mounting hole 233 Second mounting hole 24 puncture reverse sliding stent 241 first guide block 242 Wedge Block 243 second guide block 244 shoulder 245 positioning slot 246 Adjustment column 25 puncture guide block 261 Spring pressure plate 262 Second return spring 263 Positioning column DETAILED DESCRIPTION

[0039] The present invention will be further described below in conjunction with the accompanying drawings:

[0040] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more explicit definition of the protection scope of the present invention. The directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc., are only referenced to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, rather than to limit the present invention.

[0041] See also Figure 1 As shown, a prostate puncture imaging device for an MRI diagnostic instrument includes a housing, a coil assembly, an amplifier and a puncture mechanism 2;

[0042] The housing includes a first housing 11, a second housing 12, and a third housing 13 which are sequentially spliced ​​together. A pair of racks 111 are respectively provided on both sides of the first housing 11. The pair of racks 111 on the same side have the same structure and are mirror-imaged.

[0043] See also Figure 2 As shown, the housing further includes a strap buckle 14 arranged on both sides of the first housing 11, the strap buckle includes a buckle body 141, an unlocking button 142, a buckle block 143, a first reset spring 144, and a side cover 145. The lower part of the buckle body 141 is symmetrically penetrated with fixing holes 1411 corresponding to the positions of the rack 111, and a strap installation hole 1412 for fixing and installing the strap 15 is further provided between the two fixing holes 1411, and a winding rod 1413 is horizontally provided at the center of the strap installation hole 1412;

[0044] A buckle installation groove is provided on the side of the fixing hole, and a sliding groove is recessed on the side wall of the buckle installation groove. The buckle block 143 is movably installed in the buckle installation groove through the sliding groove. The unlocking button 142 is installed above the buckle installation groove. The side cover 145 is installed on both sides of the buckle body 141 through a fixing element.

[0045] The cross section of the buckle block 143 is in a right-angle trapezoidal shape, and the upper surface is a downwardly inclined inclined surface design. The inner side of the buckle block 143 is convexly provided with straight teeth that cooperate with the rack 111, and the two sides are convexly provided with protrusions that cooperate with the slide groove, and the outer side is concavely provided with a slot hole. The first return spring 144 is placed in the slot hole, with one end abutting against the inner wall of the slot hole, and the other end abutting against the inner wall of the side cover 145;

[0046] The lower surface of the unlock button 142 is designed as a downwardly inclined slope. The unlock button 142 moves downward to push the buckle block 143 to move outward, thereby releasing the lock between the spur teeth and the rack 111, and the buckle body 141 can move relative to the rack 111.

[0047] The strap 15 is installed through the strap installation holes 1412 of the strap buckles 14 on both sides.

[0048] The second shell 12 is made of a thin soft sponge material covered with leather or a flexible foam material. The second shell 12 is designed in a section shape. The overall structure is easy to bend and can maintain shape due to the section design.

[0049] The width of the second shell is smaller than that of the first shell or the third shell to adapt to the narrow space of the perineum.

[0050] The coil assembly is made of a flexible substrate, and the radio frequency coil device is overall soft and easy to bend, and can be closely attached to the imaging part.

[0051] See also Figure 5 As shown, the coil assembly is fixed in the housing and is made of flexible material as a whole; the amplifier is fixed in the housing and connected to each coil unit of the coil assembly through a matching plate;

[0052] The coil assembly used in the present invention is a 16-channel coil, and the overall structure of the coil assembly is a saddle-shaped unit design, including a first coil, a second coil, a third coil, a fourth coil, a fifth coil, a sixth coil, a seventh coil, an eighth coil, a ninth coil, a tenth coil, an eleventh coil, a twelfth coil, a thirteenth coil, a fourteenth coil, a fifteenth coil, and a sixteenth coil;

[0053] The first coil, the second coil and the third coil of the first coil group located in the first shell are arranged longitudinally in sequence and two adjacent parts overlap, so as to eliminate the coupling between the first coil and the second coil, and between the second coil and the third coil;

[0054] The fourth coil, the fifth coil and the sixth coil are arranged longitudinally in sequence and two adjacent parts overlap, so as to eliminate the coupling between the fourth coil and the fifth coil, and between the fifth coil and the sixth coil;

[0055] The first coil and the fourth coil overlap adjacent parts, so as to eliminate coupling between the first coil and the fourth coil;

[0056] The second coil overlaps with adjacent parts of the fifth coil, so as to eliminate coupling between the second coil and the fifth coil;

[0057] The third coil overlaps with the adjacent part of the sixth coil, so as to eliminate the coupling between the third coil and the fifth coil;

[0058] The overlapping area formed by the first coil and the fifth coil and the overlapping area formed by the second coil and the fourth coil form an intersection, so as to further eliminate the coupling between the coil units;

[0059] The overlapping area formed by the second coil and the sixth coil and the overlapping area formed by the third coil and the fifth coil form an intersection, so as to further eliminate the coupling between the coil units;

[0060] The third coil group located in the third housing has the same coil arrangement structure as that of the first coil group.

[0061] The second coil group located in the second housing includes a seventh coil, an eighth coil, a ninth coil, and a tenth coil, and the coil units of the second coil group are all in a horizontal 8 structure;

[0062] The seventh coil and the eighth coil are arranged longitudinally and the adjacent parts overlap, the ninth coil and the tenth coil are arranged longitudinally and the adjacent parts overlap, the seventh coil and the ninth coil are arranged transversely and the adjacent parts overlap, and the eighth coil and the tenth coil are arranged transversely and the adjacent parts overlap, so as to eliminate the coupling between the coil units;

[0063] The adjacent areas of the seventh coil, the eighth coil, the ninth coil and the tenth coil form an overlapping area in the shape of an "X" to further eliminate the coupling between the coil units;

[0064] The seventh coil overlaps with the adjacent parts of the fourth coil and the fifth coil respectively, the eighth coil overlaps with the adjacent parts of the fifth coil and the sixth coil respectively, the ninth coil overlaps with the adjacent parts of the eleventh coil and the twelfth coil respectively, and the tenth coil overlaps with the adjacent parts of the twelfth coil and the thirteenth coil respectively.

[0065] Since the working principle of magnetic resonance requires that the normal magnetic field of the radio frequency coil unit itself must be perpendicular to the main magnetic field direction, for a horizontal field magnetic resonance system (usually the field strength is 1.5 Tesla, 3 Tesla), the design of the coil in the perineum connecting the rectum and the prostate cannot adopt the design of a conventional annular coil unit. This embodiment uses a saddle-shaped coil assembly design and a horizontal "8" coil unit design for the second coil group, which can provide high-definition and stable imaging for prostate and rectal examinations of magnetic resonance imaging devices.

[0066] See also Figure 6 As shown, the second arrangement form of the coil units of the coil assembly of the present invention is different from the first arrangement form in that: the coil units of the second coil group located in the second housing are arranged horizontally from left to right in the seventh coil, the eighth coil, the ninth coil, and the tenth coil. The coil units in this embodiment are a vertical 8 structure, and the adjacent parts of the left and right coil units overlap, so as to eliminate the coupling between the coil units.

[0067] The seventh coil overlaps with adjacent portions of the fourth coil, the fifth coil and the sixth coil respectively, and the tenth coil overlaps with adjacent portions of the eleventh coil, the twelfth coil and the thirteenth coil respectively.

[0068] See also Figure 1 As shown, a support 112 is convexly provided on the upper surface of the first housing 11 and located near the second housing 12. The support 112 is provided with a puncture mechanism installation groove 1121 for installing the puncture mechanism 2 from the back to the front. The top surface of the support 112 is also laterally concavely provided with a plurality of mutually parallel card grooves 1122;

[0069] See also Figure 3As shown, the puncture mechanism 2 includes a housing, a sliding mounting member, a lifting guide rail, a puncture assembly, and a plurality of positioning assemblies;

[0070] The housing comprises a front housing 211 and a rear housing 212 connected by fixing bolts, a fixing column 213 is convexly provided on the bottom surface of the rear housing 212, a fixing pin 214 is also penetrated at the lower end of the fixing column 213, through holes are also transversely penetrated on the front housing 211 and the rear housing 212, first guide grooves 2121 are penetrated on both sides of the through hole of the rear housing 212, a plurality of positioning pits are equidistantly concavely provided on the inner side wall of the rear housing 212 between the first guide groove and the through hole, a card 216 is hinged on the outer side wall of the rear housing through a rotating shaft 215, and a straight slot hole 2161 is penetrated in the center of the card 216;

[0071] The sliding mounting member is installed on the bottom surface of the housing, and includes a sliding plate 221 sleeved on the fixing column 213, a sliding round cap 222 mounted on the lower end of the fixing column 213 through a fixing pin 214, and a spring 223 sleeved on the fixing column 213 and located between the sliding plate 221 and the sliding round cap 222;

[0072] The lifting guide rail 23 is fixed to both sides of the inner side of the front shell 211 by fixing bolts, and a second guide groove 231 is formed in the center of the lifting guide rail 23, and a first mounting hole 232 and a second mounting hole 233 are formed in the upper part and the middle part of the second guide groove respectively;

[0073] The puncture assembly includes a puncture inverted sliding bracket 24 and a plurality of puncture guide blocks 25. The puncture inverted sliding bracket 24 is evenly arrayed with a plurality of grille holes for installing the puncture guide blocks 25. The front of the puncture inverted sliding bracket 24 and the two sides of the grille hole are sequentially protruded with a first guide block 241, a wedge block 242, and a second guide block 243 from top to bottom. The inner sides of the first guide block 241 and the second guide block 242 are respectively protruded with a boss 244 that cooperates with the second guide groove 231. The rear of the puncture inverted sliding bracket 24 and the two sides of the grille hole are symmetrically protruded with a plurality of positioning grooves 245. The puncture inverted sliding bracket 24 also extends backward with a pair of adjustment columns 246 that cooperate with the first guide groove 2121.

[0074] The puncture guide block 25 is provided with a plurality of puncture holes for the puncture needle to pass through.

[0075] The positioning assembly includes a spring pressure plate 261, a second return spring 262, and a positioning column 263. The spring pressure plate 261 is fixed to the front of the piercing sliding bracket 24 by a fixing bolt and is located between the first guide block 241 and the second guide block 243. The second return spring 262 and the positioning column 263 are inserted into the positioning groove 245. One end of the second return spring 262 is against the spring pressure plate 261, and the other end is against the bottom of the positioning column 263.

[0076] The boss 244 slides into the second guide groove 231 along the first mounting hole 232 and the second mounting hole 233, and the puncture inverted sliding bracket 24 is installed between the two lifting guide rails 23. The adjustment column 246 at the rear end of the puncture inverted sliding bracket 24 passes through the first guide groove 2121. Medical personnel slide the adjustment column 246 up and down along the first guide groove 2121, thereby controlling the puncture inverted sliding bracket 24 to move up and down in the shell, and through the cooperation of the positioning column 263 and the positioning pit, the puncture inverted sliding bracket 24 is positioned in the vertical direction.

[0077] See also Figure 4 As shown, the puncture mechanism is installed on the support 112 from back to front along the puncture mechanism mounting groove 1121 provided on the support 112, and the sliding plate 221 of the sliding mounting member is abutted against the upper wall of the puncture mechanism mounting groove 1121 under the action of the spring 222, thereby preventing the puncture mechanism from easily sliding out of the puncture mechanism mounting groove 1121. When the puncture mechanism is located in a position close to the perineum of the human body, the card 216 is rotated around the rotating shaft 215, and the position of the puncture mechanism is locked through the cooperation between the card 216 and the card groove 1122 in the relative position, thereby ensuring that the puncture mechanism is close to the perineum of the human body when performing a puncture biopsy.

[0078] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should fall within the scope of the claims of the present invention.

Claims

1. A prostate puncture imaging device for an MRI diagnostic instrument, comprising a shell, a coil assembly, an amplifier and a puncture mechanism; the shell comprises a first shell, a second shell and a third shell which are sequentially spliced, and also comprises strap buckles symmetrically mounted on both sides of the first shell and straps passing through the strap buckles on both sides and mounted on the first shell, the second shell is a bendable flexible material; the coil assembly is fixed in the shell and is made of a flexible material as a whole; the amplifier is fixed in the shell and is connected to each coil unit of the coil assembly through a matching plate; the puncture mechanism is movably mounted on the first shell and is located near the second shell; after the shell is bent, it fits along the lower abdomen, perineum and back waist of the human body so as to collect signals from the fitted parts, and the puncture mechanism is close to the perineum of the human body; it is characterized in that The puncture mechanism includes a housing, a sliding mounting member, a lifting guide rail, a puncture assembly, and a plurality of positioning assemblies; The housing comprises a front housing and a rear housing connected by a fixing element, a fixing column is convexly provided on the bottom surface of the rear housing, a fixing pin is also penetrated at the lower end of the fixing column, a through hole is also transversely penetrated on the front housing and the rear housing, a first guide groove is also penetrated on both sides of the through hole of the rear housing, and a plurality of positioning pits are also equidistantly concavely provided on the inner side wall of the rear housing between the first guide groove and the through hole; The sliding mounting member is mounted on the bottom surface of the housing, and includes a sliding plate sleeved on the fixing column, a sliding round cap mounted on the lower end of the fixing column through a fixing pin, and a spring sleeved on the fixing column and located between the sliding plate and the sliding round cap; The lifting guide rails are fixed on both sides of the housing, and a second guide groove is provided in the center of the lifting guide rails; The puncture assembly includes a puncture inverted sliding bracket and a plurality of puncture guide blocks, the puncture inverted sliding bracket is evenly provided with a plurality of grille holes for installing the puncture guide blocks, the grille holes are arranged in an array, the front of the puncture inverted sliding bracket and located on both sides of the grille holes are sequentially protruded from top to bottom with a first guide block, a wedge block, and a second guide block, the inner sides of the first guide block and the second guide block are respectively protruded with a boss that cooperates with the second guide groove, the rear of the puncture inverted sliding bracket and located on both sides of the grille holes are protruded with a positioning groove, and the puncture inverted sliding bracket also extends backward with a pair of adjustment columns that cooperate with the first guide groove; The positioning assembly includes a spring pressure plate, a second return spring, and a positioning column. The spring pressure plate is fixed to the front of the puncture sliding bracket through a fixing element and is located between the first guide block and the second guide block. The second return spring and the positioning column are inserted into the positioning groove. One end of the second return spring abuts against the spring pressure plate, and the other end abuts against the positioning column.

2. The prostate puncture imaging device for MRI diagnostic apparatus according to claim 1, characterized in that: The rear side of the second guide groove is penetrated by a first mounting hole and a second mounting hole respectively, and the bosses enter the second guide groove along the first mounting hole and the second mounting hole respectively, so that the piercing sliding bracket is movably mounted between the two lifting guide rails.

3. The prostate puncture imaging device for MRI diagnostic apparatus according to claim 1, characterized in that: The puncture guide block is provided with a plurality of puncture holes for the puncture needle to pass through, and the puncture holes are arranged in an array.

4. The prostate puncture imaging device for MRI diagnostic apparatus according to claim 1, characterized in that: A support is convexly provided on the upper surface of the first shell and located near the second shell. The support is provided with a puncture mechanism installation groove cooperating with the sliding installation member from the back to the front. The top surface of the support is also laterally concavely provided with a plurality of mutually parallel card grooves; The back of the rear shell of the puncture mechanism is also hinged with a card through a rotating shaft. The puncture mechanism is movably installed on the support through a sliding mounting piece. The positioning of the puncture mechanism is completed by the cooperation between the card and the card slot, so that the puncture mechanism is closely attached to the perineum of the human body.

5. The prostate puncture imaging device for MRI diagnostic apparatus according to claim 4, characterized in that: A straight slot hole runs through the center of the card, and the straight slot hole cooperates with the rotating shaft to hinge the card on the back side of the rear shell of the puncture mechanism.

6. The prostate puncture imaging device for MRI diagnostic apparatus according to claim 1, characterized in that: A pair of racks are provided on both sides of the first shell, and the pair of racks on the same side have the same structure and are mirror-imaged; a fixing hole is penetrated through the strap buckle, and the strap buckle is installed on both sides of the first shell through the cooperation between the fixing hole and the rack.

7. The prostate puncture imaging device for MRI diagnostic apparatus according to claim 6, characterized in that: The strap buckle comprises a buckle body, an unlocking button, a buckle block, a first return spring, and a side cover. A fixing hole is formed at a position of the strap buckle corresponding to the rack, a buckle mounting groove is formed at a side of the fixing hole, a slide groove is formed on the side wall of the buckle mounting groove, the buckle block is movably mounted in the buckle mounting groove through the slide groove, the unlocking button is mounted above the buckle mounting groove, and the side cover is mounted on both sides of the strap buckle through a fixing element. The cross section of the buckle block is in a right-angle trapezoidal shape, and the upper surface is a downwardly inclined inclined surface design. The inner side of the buckle block is convexly provided with straight teeth that cooperate with the rack, and the two sides are convexly provided with protrusions that cooperate with the slide groove. The outer side is concavely provided with a slot hole, and the first return spring is placed in the slot hole, with one end abutting against the inner wall of the slot hole and the other end abutting against the inner wall of the side cover; The lower surface below the unlocking button is designed as a slope inclined downward. The unlocking button moves downward, pushing the buckle block to move outward, thereby releasing the lock between the spur teeth and the rack, and the strap buckle can move relative to the rack.

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