A puncture stent and a biopsy device

Abstract

The present invention relates to the technical field of medical supplies, and particularly to a puncture bracket and a biopsy device. The puncture bracket includes a main body, a rod, and a needle groove plate, wherein: the main body can be connected to an ultrasonic probe and has a channel, the length of the channel is less than the length of the rod; the rod can enter the channel from its first end and can reciprocally slide in the channel in a first direction, the first direction being parallel to the extending direction of the rod; the needle groove plate is fixed to the second end of the rod, and at least one needle insertion hole parallel to the first direction is provided on the needle groove plate. According to the technical solution provided by the present invention, not only the structure of the puncture bracket is optimized, its volume is reduced, but also the manufacturing cost is lowered; the rod and the main body can be flexibly telescoped, so that the position of the needle groove plate is adjustable, thereby avoiding the needle groove plate pressing against the perineum of the patient and reducing the discomfort during the puncture process; further, during the operation, the puncture needle can be separated from the puncture bracket and the ultrasonic probe, which is beneficial for the doctor to operate flexibly.

Description

Technical Field

[0001] The present invention relates to the technical field of medical supplies, and particularly to a puncture bracket and a biopsy device. Background Art

[0002] Currently, prostate biopsy is generally used to detect and screen prostate diseases. During ultrasound biopsy, a small amount of sample tissue needs to be taken from different parts of the prostate to achieve the purpose of clear diagnosis. The biopsy has the advantages of small trauma and high accuracy, so it has been widely used clinically. The common biopsy sampling routes are the transrectal route and the transperineal route; among them, the transrectal route has some drawbacks, mainly including: 1. The ultrasound probe and the puncture bracket reach the prostate position through the rectal entrance, and the bacteria inside the rectum are likely to cause a relatively high risk of infection; 2. There are certain blind spots in the puncture position. Therefore, transperineal puncture is the mainstream method for prostate biopsy at present, which has the advantages of aseptic operation, low infection risk, and comprehensive sampling.

[0003] The transperineal puncture operation requires the use of a puncture bracket in cooperation with an ultrasound probe. Currently, the transperineal puncture brackets used in hospitals are mainly puncture brackets similar to grid sieve plates, which can be used for puncture surgery only after being fixed with a customized stepper; there are the following disadvantages: 1. A specific stepper is required, and the cost of the stepper is expensive and the volume is large, which affects the flexible operation of the doctor during the operation; 2. The function of separating the needle holder during the operation cannot be achieved; 3. The large volume of the sieve plate puncture bracket placed at the perineum seriously increases the discomfort of the patient during the operation. Summary of the Invention

[0004] In view of this, the present invention provides a puncture bracket and a biopsy device, which have the advantages of simple structure, low cost, flexible and convenient operation, and the ability to separate the puncture needle during the operation.

[0005] In one aspect of the present invention, a puncture bracket is provided, which includes a main body, a rod, and a needle slot plate, wherein: the main body can be connected to an ultrasound probe and has a channel, and the length of the channel is less than the length of the rod; the rod can enter the channel from its first end and can reciprocally slide in the channel along a first direction, and this first direction is parallel to the extension direction of the rod; the needle slot plate is fixed to the second end of the rod, and at least one needle-passing hole parallel to the first direction is provided on the needle slot plate.

[0006] Optionally, the main body includes a hoop and two spaced L-shaped walls; the hoop is used to connect the ultrasound probe; the L-shaped wall includes a vertical wall and a horizontal wall, wherein the vertical wall extends away from the hoop from the outer surface of the hoop, and the two horizontal walls respectively extend towards each other from the free edges of the two vertical walls, and this free edge is parallel to the first direction, so that the two L-shaped walls and the outer wall of the hoop enclose the channel.

[0007] Optionally, the hoop includes a hoop body with an arched cross-section and an arched wrench connected to the hoop body. An L-shaped wall is located on the hoop body. One edge of the hoop body is rotatably connected to one end of the wrench. A first stepped edge is provided near the other edge of the hoop body, and a second stepped edge is provided at the other end of the wrench. The second stepped edge is used to engage with the first stepped edge so that the hoop body and the wrench form a closed loop.

[0008] Optionally, the upper surface of the main arm of the rod has an upper boss that protrudes upward and is located between the two transverse walls and extends along the first direction. A plurality of pits are arranged in a line along the two side wall surfaces of the upper boss in the first direction. The two transverse walls have notches at the same position in the first direction. The puncture bracket further has a push button and two first elastic arms, where: the fixed ends of the first elastic arms are fixed to the inner wall at the entrance of the notch. The first elastic arms are parallel to the first direction, so that the first elastic arms and the notch form a hole. The free ends of the two first elastic arms are provided with bumps that protrude towards each other. The push button includes a push button platform and two fixed arms. The fixed arms are located on the lower surface of the push button platform and are perpendicular to the push button platform. The fixed arms are inserted into the hole and can slide in the hole along the first direction. The root of the fixed arm has a section of the fixed arm that protrudes towards the entrance of the notch. The section of the fixed arm is used to abut against the free end of the first elastic arm so that the bumps cannot be separated after being inserted into the pits, thereby restricting the rod from sliding along the first direction in the channel.

[0009] Optionally, a second section of the fixed arm extending away from the push button platform is provided on the section of the fixed arm. A U-shaped groove parallel to the first direction is formed between the second section of the fixed arm and the section of the fixed arm. A part of the two side edges of the main arm is located in the U-shaped groove. The upper surface of the push button platform is provided with a hand position groove and / or a marking portion.

[0010] Optionally, a groove extending along the first direction is provided below the rod. A receiving space is formed between the groove and the outer wall of the hoop. A single hole is provided on the wall of the hoop. A second elastic arm is provided in the single hole. The single hole is located on the wall of the hoop in the channel and is close to the end of the channel away from the needle slot plate. The second elastic arm is parallel to the first direction. The fixed end of the second elastic arm is fixed to the end face of the wall of the hoop. The free end of the second elastic arm is provided with a protruding structure. The protruding structure includes a first straight end face with a height greater than the wall thickness of the hoop. Thus, the protruding structure protrudes into the channel and enters the receiving space. The first end of the rod has an end wall perpendicular to the first direction. The inner side of the end wall can be blocked by the first straight end face during the sliding process of the rod, thereby stopping the sliding.

[0011] Optionally, two parallel sub-arms extending in the first direction are provided at the front end of the main arm. A defined interval is provided between the two sub-arms. A protruding retaining wall is provided on the inner side of each of the two sub-arms, and the two retaining walls protrude towards each other. A lower convex platform is provided on the lower surface of the main arm along its length direction. The surface of the lower convex platform fits against the outer wall of the hoop. The lower convex platform extends below the sub-arms. The bottoms of the ends of the two sub-arms away from the main arm are connected to the beam. A third elastic arm is provided between the two sub-arms along the sliding direction of the rod. The two ends of the third elastic arm are respectively connected to the end of the main arm and the beam. A protruding structure is provided on the upper surface of the third elastic arm. The protruding structure includes a second inclined surface and a second straight end surface. The needle slot plate includes a needle slot arm and two insertion arms. The two insertion arms are arranged at the edges of the bottom of the needle slot arm along the width direction of the needle slot arm. A protruding structure is provided on the bottom surface of the needle slot arm. The protruding structure is located between the two insertion arms. The protruding structure includes a third inclined surface and a third straight end surface. The insertion arm is inserted between the two sub-arms, and the upper surface of the insertion arm fits against the lower surface of the retaining wall. The positions of the second inclined surface and the second straight end surface, and the third inclined surface and the third straight end surface are set such that the second straight end surface abuts against the third straight end surface, so that the insertion arm cannot withdraw from between the two sub-arms.

[0012] Optionally, both ends of the beam protrude towards the two sides of the first direction respectively, so as to be able to abut against the end surface of the hoop close to the second end of the rod to form a limit.

[0013] Optionally, on the side wall of the needle slot arm, a plurality of beams are arranged in parallel along the height direction of the needle slot arm. The needle insertion hole is the gap between the plurality of beams; or the needle insertion hole has a complete inner wall.

[0014] Optionally, the needle slot arm includes a main body part and a matching part. A plurality of parallel grooves are provided on the docking surface of the matching part. The plurality of grooves are distributed along the height direction of the needle slot arm and penetrate the needle slot arm along the width direction of the needle slot arm; the docking surface of the main body part fits against the docking surface of the matching part to form a hole with a complete inner wall.

[0015] In another aspect of the present invention, a biopsy device is further provided, including an ultrasonic probe and the above-mentioned puncture bracket; the hoop of the puncture bracket is sleeved on the outer wall of the ultrasonic probe.

[0016] Optionally, a limiting protrusion is provided on the outer wall of the ultrasonic probe, and a clamping groove for clamping with the limiting protrusion is provided on the hoop.

[0017] According to the technical solution provided by the present invention, using the needle slot plate to replace the existing square puncture frame and omitting the stepper structure at the same time not only optimizes the structure of the puncture bracket, reduces its volume, but also reduces the manufacturing cost; the rod and the main body can be flexibly telescoped, so that the position of the needle slot plate is adjustable, and further, the puncture discomfort during the puncture process can be avoided; further, the puncture needle can be separated from the puncture bracket and the ultrasonic probe, which is beneficial for the doctor to operate flexibly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] For purposes of illustration and not limitation, the present invention will now be described in accordance with preferred embodiments thereof, particularly with reference to the accompanying drawings, in which:

[0019] Figure 1 FIG. [8] is a schematic structural view of a puncture bracket provided by an embodiment of the present invention;

[0020] Figure 2 FIG.

[12] is a schematic structural view of the main body;

[0021] Figure 3 FIG.

[16] is a schematic structural view of the main body from another perspective;

[0022] Figure 4 FIG.

[20] is a schematic structural view of the wrench;

[0023] Figure 5 FIG.

[24] is a schematic structural view of the wrench from another perspective;

[0024] Figure 6 FIG.

[28] is a schematic structural view of the wrench with a rubber pad added;

[0025] Figure 7 FIG.

[32] is a schematic structural view of the push button;

[0026] Figure 8 FIG.

[36] is a schematic structural view of the push button from another perspective;

[0027] Figure 9 FIG.

[40] is a schematic structural view of the rod;

[0028] Figure 10 FIG.

[44] is a schematic structural view of the connection between the rod and the needle groove plate;

[0029] Figure 11 FIG.

[48] is a schematic structural view of the top of the main body;

[0030] Figure 12 FIG.

[52] is a cross-sectional view of the first elastic arm along the first direction;

[0031] Figure 13 FIG.

[56] is a schematic structural view of the lower surface of the rod;

[0032] Figure 14 FIG.

[60] is a schematic structural view of the rod from another perspective;

[0033] Figure 15 FIG.

[64] is a cross-sectional view of the front end of the rod;

[0034] Figure 16 FIG.

[68] is a schematic structural view of the needle groove plate with a semi-enclosed needle-piercing hole;

[0035] Figure 17 FIG.

[72] is Figure 16 a schematic structural view from another perspective; Note: The numbers in square brackets in the translation are the original line numbers for reference in case there are any specific requirements related to the original line sequence. Since the specific figures are not clearly defined in the original text, the figure numbers are left as placeholders in the translation. You may need to adjust them according to the actual figure numbers in the complete patent document.

[0036] Figure 18 Schematic diagram of the bottom of the needle groove plate;

[0037] Figure 19 Schematic diagram of the needle groove plate with a fully enclosed needle-passing hole;

[0038] Figure 20 is Figure 19 Schematic diagram of another perspective;

[0039] Figure 21 Schematic diagram of the main body part;

[0040] Figure 22 Schematic diagram of the mating part;

[0041] Figure 23 Schematic diagram of the top buckle of the mating part;

[0042] Figure 24 Schematic diagram of the bottom protrusion of the mating part;

[0043] Figure 25 Schematic diagram when the main body part and the mating part are assembled;

[0044] Figure 26 Schematic diagram after the main body part and the mating part are assembled;

[0045] Figure 27 Schematic diagram of a biopsy device provided by an embodiment of the present invention.

[0046] In the figure:

[0047] 1: Main body; 2: Wrench; 3: Push button; 4: Rod; 5: Needle groove plate; 6: Rubber pad;

[0048] 11: Hoop; 12: L-shaped wall; 13: Channel; 111: First stepped edge; 112: Rotating shaft; 113: Card slot; 120: Hole; 121: First elastic arm; 122: Notch; 123: Vertical wall; 124: Horizontal wall; 1211: Convex point; 130: Second protruding structure; 131: Second elastic arm; 132: First inclined surface; 133: First straight end face; 134: Single hole;

[0049] 21: Rotating sleeve; 22: Arch-shaped part; 23: Second stepped edge; 24: Hand position;

[0050] 31: Push button platform; 32: Fixed arm; 311: Hand position groove; 321: First section of the fixed arm; 322: U-shaped groove; 323: Second section of the fixed arm;

[0051] 41: Main arm; 42: Upper boss; 43: Lower boss; 44: Third elastic arm; 45: Beam; 46: End wall; 47: Rod groove; 411: Sub-arm; 421: Pit; 440: Third convex structure; 441: Second inclined surface; 442: Second straight end face; 461: Inner side of end arm; 4111: Stop arm;

[0052] 51: Needle groove arm; 52: Insertion arm; 53: Main body part; 54: Fitting part; 511: Depth mark; 512: Specification mark; 513: Needle-passing hole; 520: Arm convex structure; 521: Third inclined surface; 522: Third straight end face; 531: Hole; 532: Docking platform; 533: Groove; 541: Snap; 542: Convex structure; 543: Protrusion; 5411: First flat plate; 5412: Second flat plate; 5413: Handle; 5421: Fourth inclined surface; 5422: Fourth straight end face; 5131: Arm groove;

[0053] 100: Puncture bracket; 200: Ultrasound probe. Specific embodiments

[0054] In the embodiments of the present invention, the structure of the puncture bracket is effectively optimized, which can not only reduce the volume and cost, but also facilitate the flexible operation of doctors and reduce the discomfort of patients during use. The following will be specifically described.

[0055] Figure 1 A structural schematic diagram of a puncture bracket provided by an embodiment of the present invention is shown as Figure 1 shown. The puncture bracket provided by the present invention includes a main body 1, a wrench 2, a push button 3, a rod 4, and a needle groove plate 5; the main body 1 and the wrench 2 are used to connect the ultrasound probe. The first end of the rod 4 is inserted into the main body 1, and the second end is connected to the needle groove plate 4. The rod 4 can slide back and forth along its extending direction (in the left-right direction according to the perspective in the figure, and the following will refer to this sliding direction as the "first direction"). During the sliding process, the push button 3 can lock the rod 4. The following will further describe the structure of this puncture bracket.

[0056] Figure 2 A structural schematic diagram of the main body is shown as Figure 2 shown. The main body 1 includes a clamp 11 and two spaced L-shaped walls 12; the clamp 11 is used to connect the ultrasound probe; the L-shaped wall 12 includes a vertical wall 123 and a horizontal wall 124. The vertical wall 123 extends from the outer surface of the clamp 11 in a direction away from the clamp 11 (upward according to the perspective in the figure), and the two horizontal walls 124 respectively extend from the free edges of the two vertical walls 123 towards each other. The free edge is parallel to the first direction, so that the two L-shaped walls 12 and the outer wall of the clamp 11 enclose a channel 13.

[0057] Figure 3 A structural schematic diagram of another perspective of the main body is shown asFigure 2 and Figure 3 As shown, according to the perspective in the figure, the L-shaped wall 12 is arranged above the clamp body of the clamp 11, and one side of the clamp body is provided with a first stepped edge 111 (shown in Figure 2 ), and a rotating shaft 112 (shown in FIG. Figure 3 ).

[0058] The clamp 11 also includes a wrench 2 for connecting with the clamp body; Figure 4 is a schematic diagram of the structure of a wrench; Figure 5 It is a structural diagram of the wrench from another perspective; Figure 4 and Figure 5 As shown, the main body of the wrench is an arched portion 22, which has a certain elastic deformation ability. A rotating sleeve 21 is provided at one end of the arched portion 22, and a second step edge 23 for clamping with the first step edge 111 is provided at the other end, wherein a hand position 24 is also provided at the second step edge 23.

[0059] The rotating sleeve 21 is a cylindrical shape with an opening, the width of the opening is smaller than the inner diameter of the cylinder, and the rotating sleeve 21 has a certain elastic deformation ability so that the width of the opening can be variable, so that the rotating sleeve 21 can be engaged with the connecting shaft 112, so that the wrench 2 can rotate around the rotating shaft 112 within a certain range. The first step edge 111 can be engaged with the second step edge 23 provided on the wrench 2, and the inclination direction of each step of the two makes the two can only move relative to each other in the direction of reducing the inner diameter of the clamp in the contact state. If the inner diameter of the clamp needs to be expanded, the other end of the wrench 2 needs to be pulled to separate the first step edge 111 from the second step edge 23. In this way, after the puncture stent is put on the ultrasonic probe, the operator only needs to hold the clamp with the base of the hand and then apply force to tighten the clamp, so it is easy to control the size of the clamp 11 formed, and it cannot be loosened by itself after tightening. In addition, the multi-step step edge makes the clamp suitable for various diameters of the puncture stent, thereby improving the applicability of the puncture stent.

[0060] like Figures 2 to 5 As shown and described above, the clamp body and the wrench 2 are a separate structure, and the ultrasonic probe is clamped by opening or closing the wrench 2; in addition, the clamp body and the wrench 2 can also be set as an integrated structure, that is, the clamp body and the wrench 2 form a closed loop with a constant inner diameter, and the friction between the inner surface of the clamp and the outer surface of the ultrasonic probe is used to sleeve the closed loop structure on the ultrasonic probe when the puncture stent is connected to the ultrasonic probe.

[0061] Figure 6 The schematic diagram of the structure of adding a rubber pad to the wrench is as follows: Figure 6As shown, a rubber pad 6 is arranged on the inner wall of the arched portion 22 along its radian direction. The soft rubber pad 6 is made of a soft material such as rubber, TPE, or TPU, and is fixedly connected to the arched portion 22, such as by bonding. By providing the rubber pad 6 structure, the puncture bracket can be better assembled, increasing the friction between the puncture bracket and the ultrasonic probe and making the assembly more stable. In addition, since the rubber pad 6 is made of an elastomeric material, the ultrasonic probe can be better protected from being scratched and damaged when the puncture bracket is installed and removed.

[0062] Figure 7 It is a schematic structural diagram of the push button. Figure 8 It is a schematic structural diagram of another perspective of the push button; as Figure 7 and Figure 8 shown, the push button 3 includes a push button platform 31 and two fixed arms 32. The fixed arms 32 are located on the lower surface of the push button platform 31 and are perpendicular to the push button platform 31. The upper surface of the push button platform 31 is provided with a finger position groove 311 and / or an identification portion. When in use, the finger position groove 311 can increase the friction between the finger and it, and the identification portion is text and / or pattern information, facilitating the user to know the function and operation method of the push button 3.

[0063] Figure 9 It is a schematic structural diagram of the rod; as Figure 9 shown, the rod 4 includes a main arm 41, an upper boss 42 arranged above the main arm 41, and a lower boss 43 arranged below the main arm 41. The upper boss 42 and the lower boss 43 extend along the length direction of the main arm 41, and the three are of an integral structure, that is, the cross-sectional shape of the rod 4 is similar to a "+" character. The rod 4 can enter the channel 13 from its first end (the proximal end from the Figure 9 viewpoint). The length of the channel 13 is less than the length of the rod 4, so that a part of the rod 4 is located outside the channel 13 after the rod 4 enters the channel 13, and the needle slot plate can be installed; the rod 4 can slide reciprocally in the channel 13 along the first direction. In this state, the upper boss 42 is located between the two transverse walls 124, and the surface of the lower boss 43 is in contact with the outer wall of the hoop 11.

[0064] Figure 10 It is a schematic structural diagram of the connection between the rod and the needle slot plate; as Figure 10 shown, the needle slot plate 5 is fixed to the second end of the rod 4 (i.e., the Figure 9 distal end in

[0065] In the embodiment of the present invention, the push button 3 can be used to lock the rod 4, thereby limiting the telescopic position of the rod 4 on the main body 1 and achieving the purpose of adjusting the position of the needle slot plate 5. As Figure 9 and Figure 10 shown, a plurality of pits 421 are arranged in a line along the two side wall surfaces of the upper boss 42 along the above-mentioned first direction. Figure 11Schematic diagram of the structure at the top of the main body; Figure 12 It is a sectional view along the first direction at the first elastic arm. As Figure 2 , Figure 3 , Figure 11 and Figure 12 shown, two transverse walls 124 have notches 122 at the same position in the first direction; the fixed end of the first elastic arm 121 is fixed to the inner wall at the entrance of the notch 122, and the first elastic arm 121 is parallel to the first direction, so that the first elastic arm 121 and the notch 122 form a hole 120. Bumps 1211 are provided at the free ends of the two first elastic arms 121, and the two bumps 1211 protrude towards each other. When the push button 3 is connected to the main body 1, the fixed arm 32 is inserted into the hole 120 and can slide along the first direction in the hole 120. A section 321 of the fixed arm that protrudes towards the entrance of the notch 122 is provided at the root of the fixed arm 32. When the section 321 of the fixed arm is located at the free end of the first elastic arm 121, it abuts against the first elastic arm 121. At this time, the section 321 of the fixed arm can limit the free end of the first elastic arm 121 from opening, and further prevent the bump 1211 from detaching from the concave pit 421. The first elastic arm 121 locks the rod 4 to achieve the purpose of restricting the free sliding of the rod 4 along the first direction; when the section 321 of the fixed arm slides to the other end (away from the free end) of the first elastic arm 121, the free end of the first elastic arm 121 is released from the restriction of the section 321 of the fixed arm. At this time, manually pull the rod 4, and under the action of an external force, the bump 1211 can detach from the concave pit 421. Continuously apply a pulling force to the rod 4, and the bump 1211 repeats the actions of falling into the concave pit 421 and detaching from the concave pit 421 until the rod 4 moves to the target position. At this time, the bump 1211 falls into the concave pit 421, move the section 321 of the fixed arm to the free end of the first elastic arm 121, and the section 321 of the fixed arm locks the rod 4 again to complete the position adjustment of the rod 4.

[0066] As Figure 8 shown, a second section 323 of the fixed arm that extends in a direction away from the push button platform 31 is provided on the section 321 of the fixed arm. A U-shaped groove 322 parallel to the first direction is formed between the second section 323 of the fixed arm and the section 321 of the fixed arm. In Figure 1 the shown state, a part of the two side edges of the main arm 41 is located in the U-shaped groove 322.

[0067] In the embodiment of the present invention, when the push button 3 is in the unlocked state, the rod 4 can freely slide in the channel 13 of the main body 1. To prevent the rod 4 from separating and falling off from the main body 1, a limiting structure is also provided between the two. Figure 13 It is a schematic diagram of the lower surface of the rod (from the Figure 1 viewpoint), as Figure 13 shown, below the rod 4 ( Figure 13Among them, the rod 4 is in a flipped state with the lower surface facing upward as described above, and has a rod groove 47 extending along the aforementioned first direction. A receiving space can be formed between the rod groove 47 and the outer wall of the hoop 11. As Figure 12 shown, a single hole 134 is provided on the wall of the hoop 11, and a second elastic arm 131 is provided in the single hole 134. The second elastic arm 131 has a certain ability of elastic deformation. The single hole 134 is located on the wall of the hoop 11 within the channel 13 and is close to the end of the channel 13 away from the needle groove plate 5 (refer to Figure 1 ); the second elastic arm 131 is parallel to the first direction. The fixed end of the second elastic arm 131 is fixed to the end face of the wall of the hoop 11, and the free end of the second elastic arm 131 is provided with a second protrusion structure 130. The second protrusion structure 130 includes a first straight end face 133 with a height greater than the wall thickness of the hoop 11 and a first inclined face 132. Thus, the second protrusion structure 130 protrudes into the interior of the channel 13 and enters the receiving space formed between the rod groove 47 and the outer wall of the hoop 11; as Figure 13 shown, the first end of the rod 4 has an end wall 46 perpendicular to the first direction. Referring again to Figure 11 , when the rod 4 slides in the channel 13 towards the upper right in Figure 11 , the outer side of the end wall 46 passes through the first inclined face 132. During the process of the rod 4 sliding towards the lower left in Figure 11 in the channel 13, the inner side 461 can be blocked by the first straight end face 133, so that the rod 4 stops sliding, and further the rod 4 cannot exit from the channel 13. In addition, the second protrusion structure 130 is enclosed in the above-mentioned receiving space, making it difficult for the rod 4 to be disassembled from the channel 13, which helps to realize the disposable use of the puncture stent and improves the hygiene and safety.

[0068] In the embodiment of the present invention, the needle groove plate 5 is snap-connected to the second end of the rod 4. Figure 14 is a schematic structural diagram of another perspective of the rod; Figure 15 is a cross-sectional view of the front end of the rod. As Figure 14 and 15 shown, two sub-arms 411 extending along the first direction in parallel are provided at the front end of the main arm 41 on both sides of the main arm 41. The two sub-arms 411 extend from both side edges of the main arm 41, so there is a gap between them. A protruding stop wall 4111 is provided on the inner side of each of the two sub-arms 411, and the two stop walls 4111 protrude towards each other. The lower boss 43 extends below the sub-arms 411. The bottom ends of the two sub-arms 411 away from the main arm 41 are connected to the beam 45. A third elastic arm 44 is provided between the two sub-arms 411 along the sliding direction of the rod 4. The two ends of the third elastic arm 44 are respectively connected to the end of the main arm 41 and the beam 45. A third protrusion structure 440 is provided on the upper surface of the third elastic arm 44. The third protrusion structure 440 includes a second inclined face 441 and a second straight end face 442.

[0069] Figure 16 Schematic structural diagram of a needle groove plate with a semi - enclosed needle - threading hole Figure 17 is Figure 16 Schematic structural diagram from another perspective Figure 18 Schematic structural diagram of the bottom of the needle groove plate; as Figures 16 to 18 shown, the needle groove plate 5 includes a needle groove arm 51 and two plug - in arms 52. Among them, depth marks 511 and specification marks 512 are provided on the needle groove arm 51. The two plug - in arms 52 are arranged along the width direction of the needle groove arm 51 at the edge of the bottom of the needle groove arm 51. An arm convex structure 520 is provided on the bottom surface of the needle groove arm 51, and the arm convex structure 520 is located between the two plug - in arms 52. The arm convex structure 520 includes a third inclined surface 521 and a third straight end surface 522. The plug - in arm 52 is inserted between two pairs of arms 411, and the upper surface of the plug - in arm 52 is in contact with the lower surface of the retaining wall 4111. The positions of the second inclined surface 441 and the second straight end surface 442, as well as the third inclined surface 521 and the third straight end surface 522, are set such that the second straight end surface 442 abuts against the third straight end surface 522, so that the plug - in arm 52 cannot move to the left (here, reference Figure 10 ). As a result, it cannot withdraw from between the two pairs of arms 411. On the other hand, when the plug - in arm 52 moves to the right, it is blocked by the upper boss 42 of the main arm 4, so that the needle groove plate 5 is fixed on the main arm 4. It can also be seen that because the mutually abutting second straight end surface 442 and the third straight end surface 522 cannot be contacted from the outside, the abutting state cannot be released without causing damage, thereby realizing the one - time use of medical devices and improving the hygienic safety.

[0070] Among them, as Figure 14 shown, both ends of the beam 45 protrude in the left - and - right directions respectively, so as to be able to abut against the end surface of the hoop 11 close to the second end of the rod 4 to form a limit. This limiting structure cooperates with the limiting structure of the end wall 46 at the other end of the rod 4 to limit both ends of the rod 4, so that the rod 4 will not be separated from the main body 1. This also helps to realize the one - time use of medical devices.

[0071] In the embodiment of the present invention, the needle - threading hole 513 is a fully - enclosed hole or a semi - enclosed hole. Among them, on the side wall of the needle groove arm 51, a plurality of beams are arranged parallel to the height direction of the needle groove arm 51, and the gaps between the plurality of beams form a semi - enclosed hole; or, the needle - threading hole 513 is a hole that penetrates the needle groove plate 5 with a complete inner wall, and this hole is a fully - enclosed hole. As Figure 16 and Figure 17 shown, the needle - threading hole 513 in this needle groove plate 5 is a semi - enclosed hole; Figure 19 Schematic structural diagram of a needle groove plate with a fully - enclosed needle - threading hole Figure 20 is Figure 19 Schematic structural diagram from another perspective Figure 19 and 20The needle insertion holes 513 in the needle slot plate 5 are fully enclosed holes. The positions of the needle insertion holes 513 correspond one by one to the positions of the depth markings 511 and conform to the needle insertion route set by the software in the ultrasonic machine; the sizes of the needle insertion holes 513 are in one-to-one correspondence with the specification markings 512; the models of the needle insertion holes 513 can be selected according to actual needs. Among them, when a semi-enclosed hole structure is adopted, when the doctor needs to separate the puncture needle from the puncture needle holder, the puncture needle or biopsy needle can be quickly and parallelly removed from the opening of the puncture hole 513, and then the ultrasonic probe and the puncture bracket can be quickly removed, and only the puncture needle is left in the human body for operations such as drug administration or treatment.

[0072] Since the needle slot plate 5 is an independent structure and can be simply snapped onto the rod 4, the needle slot plate 5 can have various structural forms. Figure 21 Schematic diagram of the structure of the main part; Figure 22 Schematic diagram of the structure of the mating part; Figure 23 Schematic diagram of the structure of the top buckle of the mating part;

[0073] Figure 24 Schematic diagram of the structure of the bottom protrusion of the mating part. As Figures 21 to 24 shown, the needle slot plate 5 can further adopt a split structure, that is, the needle slot arm 51 includes a main part 53 and a mating part 54. An arm groove 5131 is provided on the docking surface of the mating part 54, and the docking surface of the main part 53 is docked with the mating part 54 to form a closed hole.

[0074] Among them, the main part 53 and the mating part 54 are connected by a connecting component; the connecting component includes a hole 531 at the top of the main part 53 and a buckle 541 at the top of the mating part 54. The buckle 541 includes a first flat plate 5411 perpendicular to the docking surface of the mating part 54. The free end of the first flat plate 5411 is connected to a second flat plate 5412 parallel to the first flat plate 5411. The first flat plate 5411 and the second flat plate 5412 form a U-shaped structure. The free end of the second flat plate 5412 extends and protrudes from the surface of the mating part 54, and this surface is a plane away from the docking surface of the mating part 54. A protrusion structure 542 is provided on the upper surface of the second flat plate 5412, and the protrusion structure 542 has a fourth inclined surface 5421 and a fourth straight end surface 5422; a docking platform 532 for docking with the bottom of the mating part 54 is provided at the bottom of the main part 53, a groove 533 is provided on the docking platform 532, and a protrusion 543 for inserting into the groove 533 is provided at the bottom of the mating part 54.

[0075] Figure 25 Schematic diagram of the structure when the main part and the mating part are assembled; Figure 26 Schematic diagram of the structure after the main part and the mating part are assembled; As Figure 25As shown, when assembling the main body part 53 and the mating part 54, first insert the protrusion 543 into the groove 533, and move the mating part 54 with the center points of the protrusion 543 and the groove 533, so that the docking surface of the mating part 54 fits against the docking surface of the main body part 53. During the movement, the buckle 541 is inserted into the hole 531, and the second flat plate 5412 can be deformed downward (squeezing deformation or manual pressing deformation) and can automatically reset, so that the protrusion structure 542 automatically resets after passing through the hole 531, and finally the fourth finger end surface 5422 abuts against the hole 531 to form as Figure 26 the assembled structure shown. When disassembling, press the handle 5413 on the second flat plate 5412 to deform the second flat plate 5412. At this time, the protrusion structure 542 can be disengaged from the blocking of the peripheral side wall of the hole 531, so that the buckle 541 is separated from the hole 531. Finally, pull out the protrusion 543 at the bottom of the mating part 54 from the groove 533.

[0076] The needle slot plate 5 adopts a split structure. When in use, different models of mating parts 54 can be assembled with the main body part 53 to form different models of needle slot plates 5 to meet different usage requirements in biopsy operations.

[0077] The puncture bracket provided by this embodiment has the following advantages:

[0078] 1. The tightening of the hoop 11 is adjustable, and it can be sleeved on ultrasonic probes of different sizes, with high versatility;

[0079] 2. The installation of the needle slot plate does not require a dedicated stepper, saving costs;

[0080] 3. The volume of the needle slot plate is reduced, thereby reducing the overall volume of the puncture bracket. The needle slot plate will not affect the operation during the doctor's operation, and it is convenient and flexible to use;

[0081] 4. After inserting the head of the ultrasonic probe into the patient's rectum, the needle slot plate can closely fit against the perineum of the patient. Due to the different body postures of the patients, the degree of abutment between the needle slot plate and the perineum is different. For example, for a fat patient, the needle slot plate needs to be adjusted backward slightly. The rod in the puncture bracket provided by the embodiment of the present invention can be telescopically adjusted, so that the puncture bracket can be adjusted to the best use state, which is convenient for doctors to use and improves the quality of the operation;

[0082] 5. A row of puncture holes 513 are provided on the needle slot plate 5. By rotating the ultrasonic probe to drive the puncture bracket to rotate, a fan-shaped puncture area can be formed, so that accurate puncture of any part of the prostate can be achieved without puncture blind spots;

[0083] 6. When the doctor needs to separate the needle holder, the semi-closed puncture hole 513 can quickly move the puncture needle or biopsy needle out parallel from the opening of the puncture hole 513, so that the ultrasonic probe and the puncture bracket can be quickly withdrawn, and the puncture needle can be left alone in the human body for operations such as drug administration or treatment.

[0084] An embodiment of the present invention further provides a biopsy device, including an ultrasonic probe 200 and a puncture bracket 100; Figure 27 is a structural schematic diagram of the biopsy device; as Figure 27 shown, the hoop 11 of the main body 1 is sleeved on the outer wall of the ultrasonic probe. In order to further improve the connection stability between the puncture bracket 100 and the ultrasonic probe 200, as Figure 3 shown, the hoop 11 is provided with a clamping groove 113 that is engaged with the limiting protrusion on the outer wall of the ultrasonic probe; at the same time, the lower surface of the beam 45 abuts against the outer wall of the ultrasonic probe 200. In order to improve the fitting degree of the two, the lower surface of the beam 45 is set as an arc surface with the same curvature as the outer wall of the ultrasonic probe 200.

[0085] The above specific embodiments do not constitute a limitation to the protection scope of the present invention. Those skilled in the art should understand that various modifications, mixtures, sub-mixtures and substitutions can occur depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A puncture stent, characterized in that, it includes a main body (1), a push button (3), a rod (4), and a needle groove plate (5), wherein: The main body (1) can be connected to an ultrasonic probe and has a channel (13), and the length of the channel (13) is less than the length of the rod (4); The push button (3) can lock the rod (4), thereby defining the telescopic position of the rod (4) on the main body (1); The rod (4) can enter the channel (13) from its first end and can reciprocally slide in the channel (13) in a first direction, and this first direction is parallel to the extending direction of the rod (4); The needle groove plate (5) is fixed to the second end of the rod (4), and at least one needle-piercing hole (513) parallel to the first direction is provided on the needle groove plate (5), wherein, The main body (1) includes a clamp (11) and two spaced L-shaped walls (12), the L-shaped walls (12) include a vertical wall (123) and a horizontal wall (124), and the two horizontal walls (124) have notches (122) at the same position in the first direction. At the entrance of the notch (122), a first elastic arm (121) is provided, and the first elastic arm (121) is parallel to the first direction, so that the first elastic arm (121) and the notch (122) form a hole (120); The push button (3) includes two fixed arms (32), the fixed arms (32) are inserted into the hole (120) and can slide in the hole (120) in the first direction. At the root of the fixed arm (32), there is a first section of the fixed arm (321) protruding towards the entrance of the notch (122), and the first section of the fixed arm (321) is used to abut against the free end of the first elastic arm (121) to restrict the rod (4) from freely sliding in the first direction.

2. The puncture stent according to claim 1, characterized in that, The clamp (11) is used to connect the ultrasonic probe; The vertical wall (123) of the L-shaped wall (12) extends away from the outer surface of the clamp (11) in a direction away from the clamp (11), and the two horizontal walls (124) respectively extend towards each other from the free edges of the two vertical walls (123), and this free edge is parallel to the first direction, so that the two L-shaped walls (12) and the outer wall of the clamp (11) enclose the channel (13).

3. The puncture stent according to claim 2, characterized in that, The clamp (11) includes a clamp main body with an arched cross-section and an arched wrench (2) connected to the clamp main body, and the L-shaped wall (12) is located on the clamp main body; One edge of the clamp main body is rotatably connected to one end of the wrench (2), and a first stepped edge (111) is provided near the other edge of the clamp main body, and a second stepped edge (23) is provided at the other end of the wrench (2), and this second stepped edge (23) is used to engage with the first stepped edge (111) so that the clamp main body and the wrench (2) form a closed loop.

4. The puncture stent according to claim 2, characterized in that, The upper surface of the main arm (41) of the rod (4) has an upper boss (42), and the upper boss (42) protrudes upward so as to be located between two transverse walls (124) and extends along the first direction; a plurality of pits (421) are arranged in a line along the two side wall surfaces of the upper boss (42) along the first direction; The puncture bracket further has a push button (3) and two first elastic arms (121), wherein: The fixed ends of the first elastic arms (121) are fixed to the inner wall at the entrance of the notch (122), and convex points (1211) are provided at the free ends of the two first elastic arms (121), and the two convex points (1211) protrude towards each other; The push button (3) includes a push button platform (31), and a fixed arm (32) is located on the lower surface of the push button platform (31) and is perpendicular to the push button platform (31). When a section (321) of the fixed arm is located at the free end of the first elastic arm (121), the two are in contact, so that after the convex point (1211) falls into the pit (421), they cannot be separated, thereby restricting the rod (4) from sliding along the first direction in the channel (13).

5. The puncture bracket according to claim 4, wherein: A second section (323) of the fixed arm extending away from the push button platform (31) is provided on a section (321) of the fixed arm. A U-shaped groove (322) parallel to the first direction is formed between the second section (323) of the fixed arm and the first section (321) of the fixed arm, and a part of the two side edges of the main arm (41) is located in the U-shaped groove (322); The upper surface of the push button platform (31) is provided with a hand position groove (311) and / or a marking portion.

6. The puncture bracket according to claim 2, wherein: Below the rod (4) there is a rod groove (47) extending along the first direction, and an accommodation space is formed between the rod groove (47) and the outer wall of the hoop (11); A single hole (134) is provided on the wall of the hoop (11), and a second elastic arm (131) is provided in the single hole (134). The single hole (134) is on the wall of the hoop (11) located in the channel (13) and is close to the end of the channel (13) away from the needle groove plate (5); The second elastic arm (131) is parallel to the first direction. The fixed end of the second elastic arm (131) is fixed to the end face of the wall of the hoop (11), and a second convex structure (130) is provided at the free end of the second elastic arm (131). The second convex structure (130) includes a first straight end face (133) with a height greater than the wall thickness of the hoop (11), so that the second convex structure (130) protrudes into the interior of the channel (13) and enters the accommodation space; The first end of the rod (4) has an end wall (46) perpendicular to the first direction, and the inner side (461) of the end wall can be blocked by the first straight end face (133) during the sliding process of the rod (4) to stop sliding.

7. The puncture bracket according to claim 4, wherein, At the front end of the main arm (41), there are two parallel sub - arms (411) extending along the first direction. A defined interval is provided between the two sub - arms (411). On the inner sides of the two sub - arms (411), there is a protruding retaining wall (4111) respectively, and the two retaining walls (4111) protrude towards each other; On the lower surface of the main arm (41), there is a downward convex platform (43) arranged along its length direction. The surface of the downward convex platform (43) fits against the outer wall of the hoop (11). The downward convex platform (43) extends below the sub - arms (411). The bottoms of the ends of the two sub - arms (411) far from the main arm (41) are connected to the beam (45). Between the two sub - arms (411), there is a third elastic arm (44) arranged along the sliding direction of the rod (4). The two ends of the third elastic arm (44) are respectively connected to the end of the main arm (41) and the beam (45). On the upper surface of the third elastic arm (44), there is a third protruding structure (440), and this protruding structure includes a second inclined surface (441) and a second straight end surface (442); The needle slot plate (5) includes a needle slot arm (51) and two plug - in arms (52). The two plug - in arms (52) are arranged at the edges of the bottom of the needle slot arm (51) along the width direction of the needle slot arm (51). On the bottom surface of the needle slot arm (51), there is an arm protruding structure (520), and the arm protruding structure (520) is located between the two plug - in arms (52). The arm protruding structure (520) includes a third inclined surface (521) and a third straight end surface (522); The plug - in arm (52) is inserted between the two sub - arms (411), and the upper surface of the plug - in arm (52) fits against the lower surface of the retaining wall (4111). The positions of the second inclined surface (441) and the second straight end surface (442), as well as the third inclined surface (521) and the third straight end surface (522), are set such that the second straight end surface (442) abuts against the third straight end surface (522), so that the plug - in arm (52) cannot withdraw from between the two sub - arms (411).

8. The puncture stent according to claim 7, wherein: Both ends of the beam (45) protrude towards the two sides of the first direction respectively, so as to be able to abut against the end surface of the hoop (11) close to the second end of the rod (4) to form a limit.

9. The puncture stent according to claim 7, wherein, On the side wall of the needle slot arm (51), a plurality of beams are arranged in parallel along the height direction of the needle slot arm (51), and the needle insertion holes (513) are the gaps between the plurality of beams; or The needle insertion holes (513) have complete inner walls.

10. The puncture stent according to claim 9, wherein, The needle slot arm (51) includes a main body part (53) and a fitting part (54). On the docking surface of the fitting part (54), there are a plurality of parallel arm grooves (5131), and the plurality of arm grooves (5131) are distributed along the height direction of the needle slot arm (51) and penetrate the needle slot arm along the width direction of the needle slot arm; The docking surface of the main body part (53) fits against the docking surface of the fitting part (54) to form a hole with a complete inner wall.

11. A biopsy device, wherein, it includes an ultrasonic probe and the puncture stent according to any one of claims 1 to 10; The clamp (11) of the puncture bracket is sleeved on the outer wall of the ultrasonic probe.

12. The biopsy device according to claim 11, characterized in that, a limiting protrusion is provided on the outer wall of the ultrasonic probe, and a clamping groove (113) engaged with the limiting protrusion is provided on the clamp (11).

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