CN217938331U - Prostate cancer transperineal universal puncture rack - Google Patents

Abstract

The utility model discloses a transperineal universal puncture rack for prostate cancer, which comprises a puncture needle positioning component arranged on a rectum ultrasonic probe through a base, wherein the puncture needle positioning component comprises a track arc which is horizontally arranged and a moving arc which is assembled on the track arc in a sliding way and is vertically arranged, and a puncture needle positioning mechanism for positioning a puncture needle is arranged on the moving arc in a sliding way; the moving arc and the track arc are concentric, the circle center of the moving arc and the track arc is positioned right above the front end of the rectal ultrasonic probe, and the puncture needle positioning mechanism is arranged on the diameter of the moving arc. The utility model discloses simple structure, regulation convenience for the supplementary pjncture needle carries out the operation of puncturing, has reduced the needle inlet, has further reduced anesthesia region, has bleed and infect the risk, has improved puncture efficiency, has reduced the emergence of complication.

Description

Transperineal universal puncture frame for prostate cancer

technical field

The utility model relates to the technical field of medical instruments, in particular to an auxiliary device for prostate puncture treatment.

Background technique

In recent years, the incidence and mortality of prostate cancer in my country have shown an increasing trend, and the proportion of newly diagnosed patients in most areas has increased significantly, which has a direct impact on the treatment effect and long-term survival of prostate cancer patients. Discovery, early diagnosis, and early treatment are extremely important to the prognosis of patients.

At present, prostate biopsy is the ultimate standard and the best method for diagnosing prostate cancer. Clinically, there are generally two ways to perform prostate biopsy surgery, one way is through the perineum, and the other way is through the rectum; but no matter which way is used, the puncture needle needs to use rectal ultrasound probe during the puncture process Perform a puncture. Since bleeding and infection are inevitable during the puncture process, the goal of biopsy surgery is to reduce the trauma surface and the risk of infection while ensuring accurate, fast, and convenient puncture. However, because transperineal biopsy avoids the intestinal route, it has higher safety, is more conducive to early detection of tumors and reduces adverse reactions after surgery, and is gradually being used by more and more medical institutions.

In the process of transperineal prostate biopsy, it is usually necessary to use a puncture template to assist the puncture needle in the puncture operation. The puncture template is usually pushed from the middle of the patient's legs to the patient's perineum, and the puncture needle passes through the puncture template to puncture into the prostate gland. sample. At present, there are two kinds of puncture templates commonly used in clinical practice, one is a clip-type structure, and the other is a plate-type structure. These two puncture templates can only be inserted parallel to the probe. Therefore, the scope of anesthesia will be very large, and there will be many needle ports, which will increase the damage of peripheral organs and increase the number of complications.

Chinese patent CN201520748911.2 discloses a puncture template for transperineal puncture biopsy of the prostate, including a front template, which is provided with a number of first positioning holes for the puncture needle to pass through; A number of second positioning holes are opened for passing through the puncture needle; the number of ball hinge assemblies is at least three, and the three ball hinge assemblies are distributed in a triangle between the front template and the rear template, The ball hinge assembly includes two ball hinges and a connecting rod fixedly connecting the two ball hinges. The two ball hinges are used to be respectively connected to the front formwork and the rear formwork so that the front formwork and the rear formwork can rotate relative to the connection rods. The puncture template can change the relative position of the front and rear templates through the ball hinge assembly, thereby realizing multi-angle puncture and improving the operational flexibility during puncture biopsy. However, due to the large size of the template, it is inconvenient to use, and the adjustment of the ball joint assembly is also relatively complicated, and it is impossible to accurately and quickly adjust the needle path to achieve the desired state.

Utility model content

The technical problem to be solved by the utility model is to provide a prostate cancer transperineal universal puncture frame with simple structure and convenient adjustment, which is used to assist the puncture needle in the puncture operation, reduce the needle entrance, and further reduce the anesthesia area, bleeding and infection risk , improve puncture efficiency and reduce complications.

In order to solve the problems of the technologies described above, the technical solutions adopted by the utility model are as follows.

The prostate cancer transperineal universal puncture frame includes a puncture needle positioning assembly installed on a rectal ultrasound probe through a base. A puncture needle positioning mechanism for positioning the puncture needle is slidably arranged on the arc; the moving arc and the track arc have the same center and the center of the circle is located directly above the front end of the rectal ultrasound probe, and the puncture needle positioning mechanism is arranged on the diameter of the moving arc.

In the perineal universal puncture frame for prostate cancer, the base is clamped on the rectal ultrasound probe and fixed by a locking mechanism.

In the perineal universal puncture frame for prostate cancer, the orbital arc is set above the base through a fixed seat, and the fixed seat is provided with a lifting adjustment mechanism for adjusting the vertical height of the orbital arc and its moving arc and the puncture needle positioning mechanism.

In the perineum universal puncture frame for prostate cancer, the lifting adjustment mechanism includes a rotating shaft that passes through the side wall of the fixing seat and is installed in the inner cavity of the fixing seat. An adjustment disc is provided at one end of the rotating shaft extending out of the fixing seat; the rotating shaft located in the inner cavity of the fixing seat The upper part is fixed with an adjusting gear, and the inner wall of the fixed seat is vertically provided with a groove, and a tooth rack which meshes with the adjusting gear and can slide up and down along the groove is slidingly fitted in the groove; the track arc is fixedly installed on the gear The bar protrudes from the top of the holder.

In the perineum universal puncture frame for prostate cancer, the fixing seat is also provided with a lifting mechanism positioning component for fixing the lifting adjustment mechanism.

In the perineum universal puncture frame for prostate cancer, the positioning assembly of the lifting mechanism includes a fan-shaped block arranged in the inner cavity of the fixed seat through a pin shaft, and a double-cone push block is fixedly arranged on the rotating shaft above the fan-shaped block, and the double-cone push block The shaft on one side of the block is fixed with a positioning gear, and the top edge of the double-cone push block located below the positioning gear is horizontally provided with straight teeth meshing with the positioning gear; On the middle optical axis, the optical axis is slidingly matched with the rotating shaft.

In the aforementioned perineal universal puncture frame for prostate cancer, the positioning assembly of the lifting mechanism includes a positioning rod parallel to the rotating shaft and fixedly arranged on the outer wall of the fixing seat. A plurality of positioning holes, all of which are circularly arranged on the edge of the adjusting disc.

In the perineal universal puncture frame for prostate cancer, the orbital arc is composed of two parallel arc-shaped orbits, and the bottom ends of the two arc-shaped orbits above the lifting adjustment mechanism are connected by a fixed plate to form an integrated structure; the two arcs A C-shaped groove is opened on the opposite surface of the shaped track, and a slider is slidably equipped in the C-shaped groove. The two sliders are fixedly connected through a horizontal connecting plate, and the horizontal connecting plate is fixedly arranged at the bottom end of the moving arc.

The above-mentioned prostate cancer transperineal universal puncture frame, the lower part of the moving arc is fixedly provided with a moving arc fixing frame straddling the orbital arc, and the side wall of the moving arc fixing frame is connected with a horizontal thread to fasten the moving arc fixing frame on the Third fixing bolt on the side wall of the track arc.

The above-mentioned perineal universal puncture frame for prostate cancer, the puncture needle positioning mechanism is slidably arranged on the moving arc through the fixing frame of the puncture needle positioning mechanism, and the second fixing bolt connected between the fixing frame of the puncture needle positioning mechanism and the moving arc is connected by a transverse thread Positioning; the puncture needle positioning mechanism includes a sleeve fixedly arranged in the middle of the fixed frame of the puncture needle positioning mechanism and located in the moving arc-shaped slot, and positioning needle rings located at both ends of the sleeve. The sleeve and the two positioning needle rings share axis; the wall of the sleeve is provided with a slender through hole, and the sleeve end faces at both ends of the slender through hole are provided with sleeves, and the two positioning pin rings pass through the connection between the sleeve and the slender through hole. The rod is connected, and the connecting rod and the casing are positioned through the first fixing bolt threaded on the casing.

Due to the adoption of the above technical solutions, the technical progress achieved by the utility model is as follows.

The utility model has the advantages of simple structure and convenient adjustment. Since the moving arc and the orbital arc share the same circle center and the center of the circle is located directly above the probe, by adjusting the position of the moving arc on the orbital arc, it can be ensured that the puncture needle can pierce the needle regardless of the angle from which it is inserted. Into the target lesion area, improving the puncture efficiency; and the utility model can insert the needle at the same needle inlet on the perineum, which greatly reduces the needle inlet of the perineum, and also reduces the anesthesia area and the risk of bleeding and infection. The damage to surrounding organs is further reduced, and the occurrence of complications is reduced.

Description of drawings

Fig. 1 is the structural representation of embodiment 1 in the utility model;

Fig. 2 is a schematic diagram of the installation structure of the puncture needle positioning mechanism and the moving arc in the first implementation of the utility model;

Fig. 3 is a structural schematic diagram of the lifting adjustment mechanism and the positioning assembly of the lifting mechanism in Implementation 1 of the utility model;

Fig. 4 is a schematic diagram of the mechanism of the positioning assembly of the lifting mechanism in Embodiment 2 of the present invention;

Fig. 5 is a structural schematic diagram of setting multiple positioning rods in the positioning assembly of the lifting mechanism in Embodiment 2 of the present utility model;

Fig. 6 is the structural representation of the utility model embodiment 3;

Figure 7 is a schematic diagram of the installation structure between the lifting adjustment mechanism, the track arc and the moving arc in Embodiment 3 of the utility model;

Fig. 8 is a structural schematic diagram of another angle of Embodiment 3 of the present utility model.

Among them: 1. Rectal ultrasound probe, 2. Base, 3. Fixing seat, 31. Rotating shaft, 32. Adjusting disc, 321. Positioning hole, 33. Adjusting gear, 34. Rack, 341. Guide slider, 35. Sector Block, 36. straight tooth, 37. positioning gear, 38. biconical push block, 39. positioning rod, 4. track arc, 41. C-shaped groove, 5. moving arc, 51. horizontal connecting plate, 52. slide Block, 6. puncture needle positioning mechanism, 61. sleeve, 62. sleeve pipe, 63. connecting rod, 64. first fixing bolt, 65. positioning needle ring, 7. puncture needle positioning mechanism fixing frame, 71. second Fixing bolt, 8. Mobile arc fixing frame, 81. Third fixing bolt.

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1

A prostate cancer transperineal universal puncture frame, the structure of which is shown in Figures 1 to 3, includes a base 2 and a puncture needle positioning assembly, the puncture needle positioning assembly is installed on the rectal ultrasound probe 1 through the base 2, and when performing puncture operations , guided by the rectal ultrasound probe 1, the puncture needle is inserted into the prostate gland through the perineum of the patient through the puncture needle positioning assembly to obtain a sample.

The puncture needle positioning assembly includes a track arc 4, a moving arc 5 and a puncture needle positioning mechanism 6. The track arc 4 is horizontally arranged on the base, the moving arc 5 is slidably assembled on the track arc 4 and arranged vertically, and the puncture needle positioning mechanism 6 slides Set on the moving arc for positioning the puncture needle.

Wherein the moving arc 5 and the track arc 4 have the same circle center, and the circle center is located directly above the front end of the rectal ultrasound probe, and the puncture needle positioning mechanism 6 is arranged on the diameter of the moving arc.

The three-dimensional coordinates are formed by the moving arc, orbital arc and rectal ultrasound probe, so the positioning needle passing through the puncture needle positioning mechanism 6 can accurately locate the lesion position of the prostate gland after passing through the center of the circle.

In the utility model, in order to ensure the accuracy of puncture and the convenience of operation, the arc of the moving arc is set to 45-60°, and the arc of the track arc is set to 90°.

The base 2 is clamped on the rectal ultrasound probe 1 and fixed by a locking mechanism. In this embodiment, the base can be set as a cylindrical structure with an axial opening, and a positioning plate is provided at the opening; the locking mechanism includes bolts and nuts that are matched, and through holes are provided on the two positioning plates; The hole is fastened by a nut, so that the base is firmly installed on the rectal ultrasound probe 1 .

The track arc 4 is arranged above the base 2 through the fixing seat 3. The fixing seat is a square tubular structure with a hollow interior, and the bottom end of the fixing seat is fixedly connected with the base as an integral structure.

The fixed base 3 is provided with a lifting adjustment mechanism for adjusting the height position of the track arc 4 and the moving arc on it and the puncture needle positioning mechanism relative to the rectal ultrasound probe 1 .

In this embodiment, the structure of the lifting adjustment mechanism is shown in FIG. 3 , including a rotating shaft 31 , an adjusting disc 32 , an adjusting gear 33 and a rack 34 . The rotating shaft 31 passes through the side wall of the fixed seat and is installed in the inner cavity of the fixed seat 3, and the adjusting disc 32 is fixed on the outer end of the rotating shaft extending out of the fixed seat 3; A groove is vertically provided on the inner wall of the fixed base 3 , and the rack 34 is slidably fitted in the groove, and the rack 34 is meshed with the adjusting gear 33 . The track arc 4 is fixedly installed on the top of the rack 34 extending out of the fixed seat 3 . When the adjustment gear rotates, the rack can slide up and down along the groove, moving up and down from the push track arc.

The fixed base 3 is also provided with a lifting mechanism positioning assembly, which is used to fix the lifting adjustment mechanism after the lifting adjustment mechanism adjusts the track arc, the moving arc and the puncture needle positioning mechanism 6 to the position, so as to prevent its displacement and affect the puncture operation.

In this embodiment, the structure of the positioning assembly of the lifting mechanism is shown in FIG. 3 , which includes a sector block 35 , a biconical push block 38 and a positioning gear 37 . The fan-shaped block 35 is a large fan-shaped structure, and the fan-shaped block 35 is arranged in the inner cavity of the fixed seat 3 through a pin shaft; the double-cone push block 38 is located on the rotating shaft 31 above the fan-shaped block 35, and is fixedly arranged with the rotating shaft, and the double-cone push block The diameter of the middle part of 38 is large, and is located at the bottom of the V-shaped groove of the large fan-shaped structure; the positioning gear 37 is fixedly arranged on the rotating shaft on one side of the biconical pushing block 38, and the straight teeth 36 are located at the top of the biconical pushing block 38 below the positioning gear 37 Along the edge, the straight teeth 36 are arranged horizontally and meshed with the positioning gear; the rotating shaft 31 is hollowly arranged, and penetrates on the optical axis in the inner cavity of the fixed seat 3, and the optical axis is fixedly arranged in the fixed seat, and the optical axis is coaxial with the rotating shaft. Slide fit.

When the adjustment disc 32 is pushed inward, the double-cone push block 38 pushes the right end of the fan-shaped block 35, so that the left end moves up around the pin shaft, and the straight teeth 36 block the positioning gear 37, locking the adjustment disc 32 so that it cannot rotate, and realize positioning; Pull the adjustment disc 32 outward, the double-cone push block 38 pushes the left end of the fan-shaped block 35, so that the left end rotates around the pin shaft and moves down, and the straight teeth 36 are separated from the positioning gear 37. At this time, the orbital arc can be adjusted by rotating the adjustment disc. , the moving arc and the height position of the puncture needle positioning mechanism 6.

The lower part of the moving arc 5 is fixedly provided with a moving arc fixed frame 8 bridged on the track arc 4, and the side wall of the moving arc fixed frame 8 is connected with a third fixing bolt 81 by transverse threads, and the moving arc can be moved by adjusting the third fixing bolt 81. The arc fixed frame 8 is tight on the track arc 4 sidewalls to realize the positioning of the moving arc and the track arc.

In this embodiment, the track arc 4 is a single track structure. As shown in Figure 1, a C-shaped groove is provided on the inner end surface of the track arc 4, and a slide block is installed in the C-shaped groove, and the slide block and the bottom end of the moving arc The connection is fixed through the L-shaped connecting plate. Wherein the moving arc fixing frame 8 is an inverted L-shaped structure, and the vertical end face of the moving arc fixing frame 8 matches the radian of the outer end face of the track arc 4 .

The puncture needle positioning mechanism 6 is slidably arranged on the moving arc 5 through the puncture needle positioning mechanism fixing frame 7, and the side wall of the puncture needle positioning mechanism fixing frame 7 is connected with a second fixing bolt 71 with a transverse thread, as shown in FIG. 2 , by adjusting The second fixing bolt 71 can realize the positioning between the fixing frame 7 of the puncture needle positioning mechanism and the moving arc 5 , thereby realizing the position fixation of the puncture needle positioning mechanism 6 .

The structure of the puncture needle positioning mechanism 6 is shown in Figure 2, including a sleeve 61 and two positioning needle rings 65, the sleeve 61 is fixedly arranged in the middle of the fixed frame 7 of the puncture needle positioning mechanism, and is located in the arc-shaped slot of the moving arc 5. Middle; two positioning needle rings 65 are respectively located at both ends of the sleeve 61, and the two positioning needle rings 65 are connected by a connecting rod 63. The sleeve 61 and the two positioning needle rings 65 are coaxial for passing through the puncture needle.

The wall of the sleeve 61 is provided with a slender through hole, and the slender through hole conforms to the diameter direction of the moving arc, that is, the axial direction of the sleeve; the sleeve end faces at both ends of the slender through hole are provided with sleeves 62, connected to The rod 63 is passed through the casing 62 and the elongated through hole, and the connection between the connecting rod 63 and the casing 62 is positioned by a first fixing bolt 64 threaded on the casing.

When the depth of the puncture needle needs to be adjusted, it can be realized by adjusting the position of the connecting rod relative to the sleeve. After the position is adjusted, the first fixing bolt is screwed for positioning.

When the utility model is used, according to the scanning results of the rectal ultrasonic probe 1, the base is clamped on the appropriate position on the rectal ultrasonic probe 1, and fixed by the locking mechanism; then according to the position of the lesion, the height of the orbital arc is adjusted and fixed; during the puncture process , according to the sampling position, adjust the left and right positions of the moving arc on the orbital arc. When it is necessary to puncture under the horizontal plane, rotate the moving arc to the bottom of the orbital arc along the vertical plane at the end of the orbital arc to realize the movement arc relative to the orbital arc. Up and down position adjustment; the up and down position of the puncture needle positioning mechanism on the moving arc can also be adjusted, and the depth of the puncture needle can also be adjusted by adjusting the position of the connecting rod relative to the sleeve. Therefore, it is possible to sample different positions of the lesion in the body through the same needle insertion point in the perineum, which greatly reduces the trauma surface of the patient, and also reduces the risk of anesthesia area and bleeding and infection.

Example 2

The difference between this embodiment and Embodiment 1 lies in the structure of the positioning assembly of the lifting mechanism.

In this embodiment, the structure of the positioning assembly of the lifting mechanism is shown in Figures 4 to 5, including a positioning rod 39 arranged parallel to the rotating shaft, and the positioning rod is fixedly arranged on the outer wall of the holder; There are a plurality of positioning holes 321 at corresponding positions, and the positioning holes 321 can pass through the positioning rod to position the rotating shaft, and all the positioning holes are circularly arranged on the edge of the adjusting disc.

When it is necessary to adjust the height of the orbital arc, pull the adjusting dial outward to separate the positioning rod from the positioning hole, then you can adjust the height of the orbital arc by rotating the adjusting dial; when the adjustment is in place, push the adjusting dial inward, and the positioning rod will It can be locked by inserting into the positioning hole of the alignment ring. The accuracy of height adjustment can be adjusted by adjusting the sparseness of the positioning holes.

The positioning rod 39 in this embodiment can be one, as shown in FIG. 4 ; it can also be multiple, as shown in FIG. 5 , as long as the positioning rod corresponds to the position of the positioning hole after being adjusted in place.

Example 3

The difference between this embodiment and Embodiment 1 mainly lies in the structure of the orbital arc.

In this embodiment, the structure of the track arc 4 is shown in Fig. 6 to Fig. 8. It is composed of two arc-shaped tracks arranged in parallel, and the bottom ends of the two arc-shaped track parts above the lifting adjustment mechanism are connected as a whole by a fixing plate. Structure: C-shaped grooves 41 are opened on the opposite surfaces of the two arc-shaped rails, and a slider 52 is slid in the C-shaped groove 41. The two sliders 52 are fixedly connected by a horizontal connecting plate 51, and the horizontal connecting plate 51 It is fixedly arranged at the bottom of the moving arc; the moving arc fixed frame 8 is an inverted U-shaped structure, as shown in FIG. 7 .

The two ends of the two arc-shaped rails are set as arc-shaped closed openings, so that the moving arc can be set downward after the end is rotated, which is convenient for use when the needle needs to be inserted at a large angle under the horizontal plane under special circumstances.

In order to ensure the stability during the rack lifting process, the present embodiment also provides a groove on the other side of the inner wall of the fixed seat opposite to the rack, and a vertical strip-shaped guide slider 341 is arranged in the groove, and the guide slider 341 and The tops of the racks 34 are all fixedly connected to the bottom end faces of the track arcs.

Of course, when the utility model is in use, the moving arc can also be replaced by an upright rectangular structure track, and it can be restored to the parallel needle insertion mode of the traditional puncture template.

Claims (10)

1. The prostate cancer transperineal universal puncture frame is characterized in that: it includes a puncture needle positioning assembly installed on the rectal ultrasound probe (1) through the base (2), and the puncture needle positioning assembly includes a horizontally arranged track arc (4) and The moving arc (5) is slidably assembled on the track arc and arranged vertically, and the puncture needle positioning mechanism (6) for positioning the puncture needle is slidably arranged on the moving arc; the moving arc (5) and the track arc (4) have the same circle center And the center of the circle is located directly above the front end of the rectal ultrasound probe, and the puncture needle positioning mechanism (6) is arranged on the diameter of the moving arc. 2. The transperineal universal puncture frame for prostate cancer according to claim 1, characterized in that: the base (2) is clamped on the rectal ultrasound probe (1) and fixed by a locking mechanism. 3. The transperineal universal puncture frame for prostate cancer according to claim 1, characterized in that: the orbital arc (4) is set above the base (2) through the fixing seat (3), and inside the fixing seat (3) It is provided with a lifting adjustment mechanism for adjusting the track arc (4) and the moving arc thereon and the vertical height of the puncture needle positioning mechanism. 4. The transperineal universal puncture frame for prostate cancer according to claim 3, characterized in that: the lifting adjustment mechanism includes a rotating shaft (31) that passes through the side wall of the fixing seat and is installed in the inner cavity of the fixing seat (3). One end of the rotating shaft (31) out of the fixed seat (3) is provided with an adjusting disc (32); the rotating shaft (31) located in the inner cavity of the fixed seat (3) is fixedly provided with an adjusting gear (33), and the inner wall of the fixed seat (3) A groove is provided vertically on the top, and a rack (34) that is engaged with the adjustment gear (33) and can slide up and down along the groove is slidingly equipped in the groove; the track arc (4) is fixedly installed on the rack ( 34) Stretch out the top of the holder (3). 5. The transperineal universal puncture frame for prostate cancer according to claim 4, characterized in that: the fixing seat (3) is also provided with a lifting mechanism positioning assembly for fixing the lifting adjustment mechanism. 6. The transperineal universal puncture frame for prostate cancer according to claim 5, characterized in that: the positioning assembly of the lifting mechanism includes a fan-shaped block (35) arranged in the inner cavity of the fixed seat (3) through a pin shaft, and is located in the fan-shaped On the rotating shaft (31) above the block (35), a biconical push block (38) is fixedly arranged, and a positioning gear (37) is fixedly provided on the rotating shaft of the biconical push block (38) side, which is positioned at the positioning gear (37). ) below the top edge of the double-cone push block (38) is horizontally provided with a straight tooth (36) meshing with the positioning gear; On the shaft, the optical shaft is slidingly matched with the rotating shaft. 7. The prostate cancer transperineal universal puncture frame according to claim 5, characterized in that: the positioning assembly of the lifting mechanism includes a positioning rod (39) parallel to the rotating shaft and fixedly arranged on the outer wall of the fixing seat, and the adjusting disc (32) is provided with some positioning holes (321) corresponding to the location of the positioning rod (39) and can pass through the positioning rod, and all positioning holes are annularly arranged on the adjustment disc edge. 8. The transperineal universal puncture frame for prostate cancer according to claim 3, characterized in that: the orbital arc (4) is composed of two arc-shaped orbits arranged in parallel, and the two arc-shaped orbits located above the lifting adjustment mechanism The bottom ends of the track parts are connected by a fixed plate into an integrated structure; C-shaped grooves (41) are provided on the opposite surfaces of the two arc-shaped tracks, and a slider (52) is installed in the C-shaped groove (41). The blocks (52) are fixedly connected through a horizontal connecting plate (51), and the horizontal connecting plate (51) is fixedly arranged at the bottom end of the moving arc. 9. The transperineal universal puncture frame for prostate cancer according to claim 1, characterized in that: the lower part of the moving arc (5) is fixedly provided with a moving arc fixing frame (8) bridged on the track arc (4) The side wall of the moving arc fixing frame (8) is horizontally threaded and connected with the third fixing bolt (81) that the moving arc fixing frame (8) is tightened on the side wall of the track arc (4). 10. The prostate cancer transperineal universal puncture frame according to claim 1, characterized in that: the puncture needle positioning mechanism (6) is slidably arranged on the moving arc (5) through the puncture needle positioning mechanism fixing frame (7) , the puncture needle positioning mechanism fixing frame (7) and the moving arc (5) are positioned through the second fixing bolt (71) connected by transverse thread; The sleeve (61) in the middle of the frame (7) and located in the arc groove of the moving arc (5) and the positioning pin rings (65) located at both ends of the sleeve (61), the sleeve (61) and two positioning pin rings (65) coaxial; the wall of the sleeve (61) is provided with a slender through hole, the sleeve end faces at both ends of the slender through hole are provided with a sleeve (62), and two positioning needle rings (65) pass through The connecting rod (63) passing through the casing (62) and the elongated through hole is connected, and the connecting rod (63) and the casing (62) are connected by the first fixing bolt (64) threaded on the casing position.

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