Needle slot plate, puncture bracket and biopsy device

Abstract

The present invention relates to the technical field of medical supplies, and in particular to a needle slot plate, a puncture bracket and a biopsy device. The needle slot plate includes a needle slot arm and a snap-on assembly, wherein: a plurality of parallel needle holes are provided on the needle slot arm, the plurality of needle holes 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 snap-on assembly is located at the bottom of the needle slot arm, and is used to connect the puncture bracket. According to the technical solution provided by the present invention, the needle slot plate is used to replace the existing square puncture bracket, and the needle slot plate is snap-connected with the puncture bracket without the need for a stepper structure, which not only optimizes the structure of the puncture bracket and reduces its volume, but also reduces the manufacturing cost; at the same time, the needle hole can be a non-enclosed hole in the shape of a groove, so that the puncture needle can be separated from the puncture bracket and the ultrasonic probe during surgery, which is convenient for doctors to operate flexibly.

Description

Technical Field

[0001] The invention relates to the technical field of medical supplies, and in particular to a needle slot plate, a puncture bracket and a biopsy device. Background Art

[0002] With the changes in people's lifestyles in recent years, the incidence of male prostate disease has continued to rise, seriously threatening people's health and quality of life, especially among the elderly male group, where it is a common disease.

[0003] At present, 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 a clear diagnosis. Biopsy is less invasive and has a high accuracy rate, so it has been widely used in clinical practice. Commonly used biopsy sampling routes are transrectal and transperineal. Among them, the transrectal route has some disadvantages, mainly including: 1. The ultrasound probe and puncture stent reach the prostate through the rectal entrance, and the bacteria inside the rectum are prone to cause a high risk of infection; 2. The puncture position is limited and there are certain blind spots. Therefore, transperineal puncture is currently the mainstream method of prostate biopsy, which has the advantages of aseptic operation, low risk of infection, and comprehensive sampling.

[0004] The existing needle slot plate is a square grid screen plate, on which hundreds of needle holes are arranged in an array. The needle slot plate is fixedly installed on the puncture bracket through a proprietary stepper. When in use, the stepper is adjusted to hold the grid screen plate puncture bracket against the patient's perineum. The ultrasound probe connected to the puncture bracket enters from the patient's anus to reach the prostate position, and the appropriate hole position of the grid screen plate is selected for needle insertion. After the puncture needle is inserted into the patient's perineum, it reaches the part of the prostate that needs puncture. This type of grid screen plate can choose hundreds of positions for needle insertion, which can fully cover any position where the prostate needs puncture without blind spots. However, it still has the following disadvantages: 1. The grid screen plate needs a specific stepper for fixing, the stepper is expensive, and its size is large, which is easy to affect the doctor's surgical operation. At the same time, the larger area has a higher risk of contamination; 2. The holes on the grid screen plate are closed holes. Sometimes doctors need to remove the ultrasound probe and the puncture bracket separately during surgery, leaving only the puncture needle in the human body. In this case, the grid screen plate has a fully closed hole and does not have the function of separating the needle holder, so it cannot meet the separation requirements. Summary of the invention

[0005] In view of this, the present invention provides a needle slot plate, a puncture bracket and a biopsy device, which have the advantages of simple structure, low cost, flexible and convenient operation, and can realize puncture needle separation during surgery.

[0006] One aspect of the present invention provides a needle slot plate, comprising a needle slot arm and a snap-on assembly, wherein: the needle slot arm is provided with a plurality of parallel needle holes, the plurality of needle holes 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 snap-on assembly is located at the bottom of the needle slot arm, and is used to connect the puncture bracket.

[0007] 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, and the needle threading hole is the gap between the plurality of beams.

[0008] Optionally, the width of the entrance into the needle hole from the radial direction of the needle hole is smaller than the inner diameter of the needle hole.

[0009] Optionally, the needle hole has a complete inner wall.

[0010] Optionally, the needle slot arm includes a main body part and a mating part, wherein: a plurality of parallel first grooves are provided on the mating surface of the mating part, the plurality of first 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 mating surface of the main body part and the mating surface of the mating part are fitted together to form a hole with a complete inner wall.

[0011] Optionally: the main body part and the mating part are connected by a connecting component; the connecting component includes a hole located at the top of the main body part and a buckle located at the top of the mating part, the buckle includes a first plate perpendicular to the mating surface of the mating part, the free end of the first plate is connected to a second plate arranged parallel to the first plate, the first plate and the second plate form a U-shaped structure, the free end of the second plate extends out of the surface of the mating part, the surface is a plane away from the mating surface, the upper surface of the second plate is provided with a first protrusion, the first protrusion has a fourth inclined surface and a fourth straight end surface; and / or, the bottom of the main body part is provided with a docking platform docking with the bottom of the mating part, the docking platform is provided with a second groove, and the bottom of the mating part is provided with a second protrusion for being inserted into the second groove.

[0012] Optionally, the snap-on assembly includes a third protrusion and two plug-in arms, wherein: the two plug-in arms are arranged at the edge of the bottom of the needle slot arm along the width direction of the needle slot arm; the third protrusion is arranged on the bottom surface of the needle slot arm and is located between the two plug-in arms, and the third protrusion has a third inclined surface and a third straight end surface.

[0013] Optionally, one end of the plug-in arm is a plug-in end, and the other end is a limit end, and the limit end is provided with a stopper protruding along the surface of the plug-in arm.

[0014] Another aspect of the present invention provides a puncture stent, comprising the needle slot plate.

[0015] In yet another aspect of the present invention, a biopsy device is provided, comprising an ultrasonic probe and a puncture support, wherein the puncture support is provided with the needle groove plate.

[0016] According to the technical solution provided by the present invention, a needle slot plate is used to replace the existing square puncture frame, and the needle slot plate is connected to the puncture bracket by a snap-fit ​​connection, without the need for a stepper structure, which not only optimizes the structure of the puncture bracket and reduces its volume, but also reduces the manufacturing cost; at the same time, the needle hole can adopt a non-closed hole in the shape of a groove, so that the puncture needle can be separated from the puncture bracket and the ultrasonic probe during surgery, which is conducive to flexible operation by the doctor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] For purposes of illustration and not limitation, the present invention will now be described in terms of preferred embodiments thereof, with particular reference to the accompanying drawings, in which:

[0018] Figure 1 A schematic diagram of the structure of a puncture stent provided in an embodiment of the present invention;

[0019] Figure 2 The schematic diagram of the structure of the main body;

[0020] Figure 3 A structural diagram of another perspective of the subject;

[0021] Figure 4 is a schematic diagram of the structure of a wrench;

[0022] Figure 5 This is a schematic diagram of the structure of the wrench from another perspective;

[0023] Figure 6 Schematic diagram of the structure of adding rubber pads to the wrench;

[0024] Figure 7 is a schematic diagram of the structure of a push button;

[0025] Figure 8 This is a structural diagram of the push button from another perspective;

[0026] Fig. 9 is a schematic diagram of the rod structure;

[0027] Fig.10 It is a schematic diagram of the structure of the connection between the rod and the needle groove plate;

[0028] Fig.11 It is a structural diagram of the top of the main body;

[0029] Fig.12 is a cross-sectional view of the first elastic arm along the first direction;

[0030] Fig.13 is a schematic diagram of the structure of the lower surface of the rod;

[0031] Fig.14 It is a structural diagram of the rod from another perspective;

[0032] Fig.15 is a cross-sectional view of the front end of the rod;

[0033] Fig.16 It is a structural schematic diagram of a needle slot plate with half-package needle holes;

[0034] Fig.17 for Fig.16 A schematic diagram of the structure from another perspective;

[0035] Fig.18 It is a structural schematic diagram of the bottom of the needle groove plate;

[0036] Fig.19 It is a schematic diagram of the structure of the needle slot plate with all needle holes;

[0037] Fig. 20 for Fig.19 A schematic diagram of the structure from another perspective;

[0038] Fig.21 It is a structural diagram of the main part;

[0039] Fig. 22 It is a structural schematic diagram of the matching part;

[0040] Fig.23 A schematic diagram of the structure of the top buckle of the matching part;

[0041] Fig.24 A schematic diagram of the structure of the protrusion at the bottom of the matching part;

[0042] Fig.25 It is a schematic diagram of the structure when the main part and the matching part are assembled;

[0043] Fig.26 It is a schematic diagram of the structure after the main part and the matching part are assembled;

[0044] Fig. 27 A schematic structural diagram of a biopsy device provided in an embodiment of the present invention.

[0045] In the figure:

[0046] 1: Main body; 2: Wrench; 3: Push button; 4: Rod; 5: Needle groove plate; 6: Rubber pad;

[0047] 11: hoop; 12: L-shaped wall; 13: channel; 111: first step edge; 112: rotating shaft; 113: slot; 120: hole; 121: first elastic wall; 122: notch; 123: vertical wall; 124: horizontal wall; 1211: convex point; 130: second elastic arm convex structure; 131: second elastic wall; 132: first inclined surface; 133: first straight end surface; 134: single hole;

[0048] 21: rotating sleeve; 22: arched portion; 23: second step edge; 24: hand position;

[0049] 31: push button platform; 32: fixed arm; 311: hand position slot; 321: fixed arm section 1; 322: U-shaped groove; 323: fixed arm section 2;

[0050] 41: main arm; 42: upper boss; 43: lower boss; 44: third elastic arm; 45: beam; 46: end wall; 47: third groove; 411: auxiliary arm; 421: pit; 440: protruding structure of the third elastic arm; 441: second inclined surface; 442: second straight end surface; 461: inner side of the end arm; 4111: blocking arm;

[0051] 51: needle slot arm; 52: plug-in arm; 53: main body; 54: matching part; 511: depth mark; 512: specification mark; 513: needle hole; 520: third protrusion; 521: third inclined surface; 522: third straight end surface; 531: hole; 532: docking platform; 533: second groove; 541: buckle; 542: first protrusion; 543: second protrusion; 5411: first flat plate; 5412: second flat plate; 5413: handle; 5421: fourth inclined surface; 5422: fourth straight end surface; 5131: first groove;

[0052] 100: puncture stent; 200: ultrasound probe. DETAILED DESCRIPTION

[0053] In the embodiment of the present invention, the structure of the puncture stent is effectively optimized, which can not only reduce the volume and cost, but also facilitate the doctor's flexible operation and reduce the discomfort of the patient during use, which is described in detail below.

[0054] Figure 1 A schematic diagram of the structure of a puncture stent provided in an embodiment of the present invention is shown in FIG. Figure 1 As 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 slot plate 5; the main body 1 and the wrench 2 are used to connect the ultrasonic probe, the first end of the rod 4 is plugged into the main body 1, and the second end is connected to the needle slot plate 4, and the rod 4 can slide back and forth along its extension direction (the left and right direction according to the perspective in the figure, and the sliding direction is referred to as the "first direction" below), and during the sliding process, the push button 3 can lock the rod 4. The structure of the puncture bracket is further described below.

[0055] Figure 2 As a schematic diagram of the main structure. Figure 2As shown, the main body 1 includes a clamp 11 and two L-shaped walls 12 with a gap; the clamp 11 is used to connect the ultrasonic probe; the L-shaped wall 12 includes a vertical wall 123 and a horizontal wall 124, wherein the vertical wall 123 extends from the outer surface of the clamp 11 in a direction away from the clamp 11 (upward from the perspective of the figure), and the two horizontal walls 124 extend toward each other from the free edges of the two vertical walls 123, respectively, and the free edges are parallel to the first direction, so that the two L-shaped walls 12 and the outer wall of the clamp 11 form a channel 13.

[0056] Figure 3 A structural diagram of another perspective of the subject, such as Figure 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 ).

[0057] 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.

[0058] 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.

[0059] like Figures 2 to 5As 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.

[0060] Figure 6 The schematic diagram of the structure of adding a rubber pad to the wrench is as follows: Figure 6 As shown, a rubber pad 6 is arranged on the inner wall of the arch portion 22 along its curvature direction. The soft rubber pad 6 is made of rubber or soft materials such as TPE, TPU, etc., and is fixedly connected to the arch portion 22, such as bonding. By setting the rubber pad 6 structure, the puncture bracket can be better assembled, the friction between the puncture bracket and the ultrasonic probe is increased, and the assembly is more stable. In addition, since the rubber pad 6 is made of an elastomeric material, the ultrasonic probe can be better protected from scratches and damage when installing and disassembling the puncture bracket.

[0061] Figure 7 It is a schematic diagram of the push button structure. Figure 8 is a structural diagram of the push button from another perspective; Figure 7 and Figure 8 As 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. A hand position groove 311 and / or a marking portion are provided on the upper surface of the push button platform 31. When in use, the hand position groove 311 can increase the friction between the finger and the push button, and the marking portion is text and / or pattern information, which is convenient for the user to know the function and operation method of the push button 3.

[0062] Fig. 9 is a schematic diagram of the rod structure, such as Fig. 9 As shown, the rod 4 includes a main arm 41, an upper boss 42 disposed above the main arm 41, and a lower boss 43 disposed 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 an integrated structure, that is, the cross-sectional shape of the rod 4 is similar to a "+" character. The rod 4 can be extended from its first end (by pressing Fig. 9 The rod 4 is a rod 40 that is inserted into the channel 13 (the viewing angle is the near end), and the length of the channel 13 is less than the length of the rod 4, so that after the rod 4 enters the channel 13, a portion of it is located outside the channel 13, and the needle groove plate can be installed; the rod 4 can reciprocate 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 clamp 11.

[0063] Fig.10 It is a schematic diagram of the structure of the connection between the rod and the needle groove plate; Fig.10 As shown, the needle groove plate 5 is fixed to the second end of the rod 4 (i.e. Fig. 9The needle slot plate 5 is provided with at least one needle hole 513 parallel to the first direction. The structure of the needle slot plate will be described later.

[0064] 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, so as to achieve the purpose of adjusting the position of the needle groove plate 5. Fig. 9 and Fig.10 As shown, a plurality of recesses 421 are arranged in a line along the two side wall surfaces of the upper boss 42 along the first direction. Fig.11 It is a structural diagram of the top of the main body; Fig.12 is a cross-sectional view of the first elastic arm along the first direction. Figure 2 , Figure 3 , Fig.11 and Fig.12 As shown, the two transverse walls 124 have a notch 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. The free ends of the two first elastic arms 121 are provided with protrusions 1211, and the two protrusions 1211 protrude toward 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 in the hole 120 along the first direction. The root of the fixed arm 32 has a fixed arm section 321 protruding toward the entrance of the notch 122. When the fixed arm section 321 is located at the free end of the first elastic arm 121, it abuts against the first elastic arm 121. At this time, the fixed arm section 321 can limit the opening of the free end of the first elastic arm 121, thereby preventing the protrusion 1211 from detaching from the pit 421. The first elastic arm 121 locks the rod 4 to achieve the purpose of limiting the free sliding of the rod 4 along the first direction; when the fixed arm section 321 slides to When the other end of the first elastic arm 121 (away from the free end), the free end of the first elastic arm 121 is free from the restriction of the first section 321 of the fixed arm. At this time, the rod 4 is manually pulled, and the protrusion 1211 can be separated from the pit 421 under the action of external force. The pulling force is continuously applied to the rod 4, and the protrusion 1211 repeatedly sinks into the pit 421 and separates from the pit 421 until the rod 4 moves to the target position. At this time, the protrusion 1211 sinks into the pit 421, moving the first section 321 of the fixed arm to the free end of the first elastic arm 121, and the first section 321 of the fixed arm is locked to the rod 4 again, completing the position adjustment of the rod 4.

[0065] like Figure 8 As shown, the first fixed arm section 321 is provided with a second fixed arm section 323 extending away from the push button platform 31, and a U-shaped groove 322 parallel to the first direction is formed between the second fixed arm section 323 and the first fixed arm section 321. Figure 1 In the state shown, a portion of the two side edges of the main arm 41 is located in the U-shaped groove 322 .

[0066] In the embodiment of the present invention, when the push button 3 is in the unlocked state, the rod 4 can slide freely in the channel 13 of the main body 1. In order to prevent the rod 4 from separating from the main body 1 and falling off, a limiting structure is also provided between the two. Fig.13 The lower surface of the rod (according to Figure 1 The structural diagram of the perspective) is as follows Fig.13 As shown, the lower part of the rod 4 ( Fig.13 The rod 4 is in the flipped state with the lower surface facing upward as described above) and has a third groove 47 extending along the first direction, and the third groove 47 can form an accommodation space with the outer wall of the hoop 11. Fig.12 As shown, a single hole 134 is provided on the wall of the clamp 11, and a second elastic arm 131 is provided in the single hole 134. The second elastic arm 131 has a certain elastic deformation ability, and the single hole 134 is located on the wall of the clamp 11 in the channel 13, and is close to the channel 13 away from the needle groove plate 5 (refer to Figure 1 ) end; 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 surface of the wall of the clamp 11, and the free end of the second elastic arm 131 is provided with a second elastic arm protruding structure 130, the second elastic arm protruding structure 130 includes a first straight end surface 133 and a first inclined surface 132 with a height greater than the wall thickness of the clamp 11, so that the second elastic arm protruding structure 130 protrudes toward the inside of the channel 13 and enters the accommodation space formed between the third groove 47 and the outer wall of the clamp 11; Fig.13 As shown, the first end of the rod 4 has an end wall 46 perpendicular to the first direction. Fig.11 , when rod 4 is Fig.11 In the process of sliding in the channel 13, the outer side of the end wall 46 passes through the first inclined surface 132, and the rod 4 moves to the Fig.11 During the sliding process of the lower left middle portion in the channel 13, the inner side 461 can be blocked by the first straight end surface 133 to stop the rod 4 from sliding, thereby preventing the rod 4 from withdrawing from the channel 13. In addition, the second elastic arm protrusion structure 130 is enclosed in the above-mentioned accommodation space, making it difficult for the rod 4 to be removed from the channel 13, which helps to achieve the disposable use of the puncture stent and improves hygiene and safety.

[0067] In the embodiment of the present invention, the needle groove plate 5 is clamped with the second end of the rod 4 . Fig.14 It is a structural diagram of the rod from another perspective; Fig.15 is a cross-sectional view of the front end of the rod. Fig.14 and 15As shown, the front end of the main arm 41 is provided with two auxiliary arms 411 extending in parallel along the first direction at the two side edges of the main arm 41, and the two auxiliary arms 411 extend from the two side edges of the main arm 41 so that there is a gap between the two. The inner sides of the two auxiliary arms 411 are each provided with a protruding retaining wall 4111, and the two retaining walls 4111 protrude toward each other. The lower boss 43 extends to the bottom of the auxiliary arm 411, and the bottoms of the two auxiliary arms 411 away from the end of the main arm 41 are connected to the beam 45. A third elastic arm 44 is provided between the two auxiliary arms 411 along the sliding direction of the rod 4, and the two ends of the third elastic arm 44 are respectively connected to the end of the main arm 41 and the beam 45, and the upper surface of the third elastic arm 44 is provided with a third elastic arm protruding structure 440, and the third elastic arm protruding structure 440 includes a second inclined surface 441 and a second straight end surface 442.

[0068] Fig.16 It is a structural schematic diagram of a needle slot plate with half-package needle holes; Fig.17 for Fig.16 A schematic diagram of the structure from another perspective; Fig.18 is a schematic diagram of the structure of the bottom of the needle groove plate; Figures 16 to 18 As shown, the needle slot plate 5 includes a needle slot arm 51 and two plug-in arms 52, wherein the needle slot arm 51 is provided with a depth mark 511 and a specification mark 512, and the two plug-in arms 52 are arranged at the edge of the bottom of the needle slot arm 51 along the width direction of the needle slot arm 51. A third protrusion 520 is provided on the bottom surface of the needle slot arm 51, and the third protrusion 520 is located between the two plug-in arms 52. The third protrusion 520 includes a third inclined surface 521 and a third straight end surface 522. The plug-in arm 52 is plugged between the two auxiliary arms 411, and the upper surface of the plug-in arm 52 is in contact with the lower surface of the retaining wall 4111, and the positions of the second inclined surface 441 and the second straight end surface 442, and the third inclined surface 521 and the third straight end surface 522 are arranged so that the second straight end surface 442 abuts against the third straight end 522, so that the plug-in arm 52 cannot move to the left (reference here). Fig.10 ) and thus cannot be withdrawn from between the two auxiliary arms 411. On the other hand, when the plug 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. In addition, it can be seen that because the second straight end face 442 and the third straight end face 522 that abut against each other cannot be contacted from the outside, the abutting state cannot be released without causing damage, thereby achieving disposable use of medical equipment and improving hygiene and safety.

[0069] Among them, Fig.14 As shown, both ends of the beam 45 protrude to the left and right directions respectively, so as to abut against the end surface of the hoop 11 close to the second end of the rod 4 to form a limit. The limit structure cooperates with the limit structure of the end wall 46 at the other end of the rod 4 so that both ends of the rod 4 are limited, so that the rod 4 will not be separated from the main body 1. This also helps to achieve disposable use of medical equipment.

[0070] In the embodiment of the present invention, the needle hole 513 is a fully enclosed hole or a semi-enclosed hole, 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 gaps between the plurality of beams form a semi-enclosed hole; or, the needle hole 513 is a hole having a complete inner wall and penetrating the needle slot plate 5, and the hole is a fully enclosed hole. Fig.16 and Fig.17 As shown, the needle hole 513 in the needle slot plate 5 is a semi-closed hole; Fig.19 It is a schematic diagram of the structure of the needle slot plate with all needle holes; Fig. 20 for Fig.19 A schematic diagram of the structure from another perspective; Fig.19 and 20 The needle hole 513 in the needle slot plate 5 is a fully enclosed hole. The position of the needle hole 513 corresponds to the position of the depth mark 511 one by one, and conforms to the needle insertion route set by the software in the ultrasound machine; the size of the needle hole 513 maintains a one-to-one correspondence with the specification mark 512; the model of the needle hole 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 moved out in parallel from the opening on the puncture hole 513, and then the ultrasound probe and the puncture holder can be quickly removed, and the puncture needle can be left alone in the human body for drug administration or treatment.

[0071] Since the needle groove plate 5 is an independent structure, it only needs to be clamped on the rod 4, so the needle groove plate 5 can have various structural forms. Fig.21 It is a structural diagram of the main part; Fig. 22 It is a structural schematic diagram of the matching part; Fig.23 A schematic diagram of the structure of the top buckle of the matching part;

[0072] Fig.24 The schematic diagram of the structure of the bottom protrusion of the matching part; Figure 21 to Figure 24 As shown, the needle slot plate 5 can further adopt a split structure, that is, the needle slot arm 51 includes a main body part 53 and a matching part 54, a first groove 5131 is provided on the docking surface of the matching part 54, and the docking surface of the main body part 53 docks with the matching part 54 to form a closed hole.

[0073] The main body 53 and the mating part 54 are connected by a connecting assembly; the connecting assembly includes a hole 531 located at the top of the main body 53 and a buckle 541 located at the top of the mating part 54, the buckle 541 includes a first plate 5411 perpendicular to the mating surface of the mating part 54, the free end of the first plate 5411 is connected to a second plate 5412 arranged parallel to the first plate 5411, the first plate 5411 and the second plate 5412 form a U-shaped structure, the free end of the second plate 5412 extends and protrudes from the surface of the mating part 54, the surface is a plane away from the mating surface of the mating part 54, the upper surface of the second plate 5412 is provided with a first protrusion 542, the first protrusion 542 has a fourth inclined surface 5421 and a fourth straight end surface 5422; the bottom of the main body 53 is provided with a docking platform 532 docking with the bottom of the mating part 54, the docking platform 532 is provided with a second groove 533, and the bottom of the mating part 54 is provided with a second protrusion 543 for inserting into the second groove 533.

[0074] Fig.25 It is a schematic diagram of the structure when the main part and the matching part are assembled; Fig.26 It is a schematic diagram of the structure after the main part and the matching part are assembled; Fig.25 As shown, when the main body 53 and the matching part 54 are assembled, the second protrusion 543 is first inserted into the second groove 533, and the matching part 54 is moved with the center point of the second protrusion 543 and the second groove 533, so that the mating surface of the matching part 54 fits with the mating surface of the main body 53. During the movement, the buckle 541 is inserted into the hole 531, and the second flat plate 5412 can be deformed downward (extrusion deformation or manual pressing deformation), and can be automatically reset, so that the first protrusion 542 automatically resets after passing through the hole 531, and finally the fourth finger end surface 5422 abuts against the hole 531 to form a shape as shown in FIG. Fig.26 When disassembling, the handle 5413 on the second plate 5412 is pressed to deform the second plate 5412, and the first protrusion 542 can be separated from the blocking of the peripheral side wall of the hole 531, so that the buckle 541 is separated from the hole 531, and finally, the second protrusion 543 at the bottom of the matching part 54 is pulled out from the second groove 533.

[0075] The needle slot plate 5 adopts a split structure, and when in use, different types of matching parts 54 can be assembled with the main body part 53 to form different types of needle slot plates 5 to meet different usage requirements in biopsy surgery.

[0076] The puncture stent provided in this embodiment has the following advantages:

[0077] 1. The tightness of the clamp 11 is adjustable and can be mounted on ultrasonic probes of different sizes, with high versatility;

[0078] 2. The installation of the needle slot plate does not require a dedicated stepper, saving costs;

[0079] 3. The size of the needle slot plate is reduced, and thus the overall size of the puncture stent is reduced. The needle slot plate will not affect the operation of the doctor, and it is convenient and flexible to use;

[0080] 4. After the head of the ultrasound probe is inserted into the patient's rectum, the needle slot plate can fit tightly against the patient's perineum. Due to different body shapes of patients, the degree of contact between the needle slot plate and the perineum is different. For example, if a patient is obese, the needle slot plate needs to be slightly adjusted backward. The rod in the puncture bracket provided in the embodiment of the present invention can be retracted and 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 surgery.

[0081] 5. A row of puncture holes 513 arranged on the needle slot plate 5 can form a fan-shaped puncture area by rotating the ultrasonic probe to drive the puncture bracket to rotate, thereby meeting the requirements of accurate puncture of any part of the prostate without puncture blind areas;

[0082] 6. When the doctor needs to separate the needle holder by using the semi-enclosed puncture hole 513, the puncture needle or biopsy needle can be quickly moved out in parallel from the opening on the puncture hole 513, so that the ultrasound probe and the puncture holder can be quickly evacuated, and the puncture needle can be left alone in the human body for drug administration or treatment.

[0083] The embodiment of the present invention further provides a biopsy device, comprising an ultrasonic probe 200 and a puncture stent 100; Fig. 27 Schematic diagram of the structure of the biopsy device; Fig. 27 As shown, the clamp 11 of the main body 1 is sleeved on the outer wall of the ultrasonic probe. In order to further improve the stability of the connection between the puncture bracket 100 and the ultrasonic probe 200, as shown in FIG. Figure 3 As shown, the clamp 11 is provided with a slot 113 which 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 fit between the two, the lower surface of the beam 45 is set to be an arc surface with the same curvature as the outer wall of the ultrasonic probe 200.

[0084] The above specific implementations do not constitute a limitation on the scope of protection of the present invention. It should be understood by those skilled in the art that various modifications, mixtures, sub-mixes and substitutions may occur depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A needle groove plate, characterized in that: It comprises a needle slot arm (51) and a clamping assembly, wherein: The needle slot arm (51) is provided with a plurality of parallel needle threading holes (513) and a depth mark (511); the plurality of needle threading holes (513) are distributed along the height direction of the needle slot arm (51) and penetrate the needle slot arm (51) along the width direction of the needle slot arm; The clamping assembly is located at the bottom of the needle slot arm (51) and is used to connect the puncture bracket; The needle slot arm (51) comprises a main body portion (53) and a matching portion (54), wherein: A plurality of parallel first grooves (5131) are provided on the docking surface of the matching portion (54), and the plurality of first grooves (5131) are distributed along the height direction of the needle groove arm (51) and penetrate the needle groove arm along the width direction of the needle groove arm; The butt joint surface of the main body part (53) and the butt joint surface of the matching part (54) are fitted together to form a hole with a complete inner wall; The main body (53) and the mating part (54) are connected by a connecting assembly, the connecting assembly includes a hole (531) located at the top of the main body (53) and a buckle (541) located at the top of the mating part (54), the buckle (541) includes a first plate (5411) perpendicular to the mating surface of the mating part, the free end of the first plate (5411) is connected to a second plate (5412) arranged parallel to the first plate (5411), the first plate (5411) and the second plate (5412) form a U-shaped structure, and the free end of the second plate (5412) extends a protruding The second flat plate (5412) is provided with a first protrusion (542) on its upper surface, the first protrusion (542) having a fourth inclined surface (5421) and a fourth straight end surface (5422), and / or the bottom of the main body (53) is provided with a docking platform (532) docking with the bottom of the mating portion (54), the docking platform (532) is provided with a second groove (533), and the bottom of the mating portion (54) is provided with a second protrusion (543) for inserting into the second groove (533); and The clamping assembly comprises a third protrusion (520) and two plug-in arms (52), wherein: Two plug-in arms (52) are arranged at the edge of the bottom of the needle slot arm (51) along the width direction of the needle slot arm (51); The third protrusion (520) is arranged on the bottom surface of the needle groove arm (51) and is located between the two plug-in arms (52). The third protrusion (520) has a third inclined surface (521) and a third straight end surface (522).

2. The needle groove plate according to claim 1, characterized in that: 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 threading hole (513) is the gap between the plurality of beams.

3. The needle groove plate according to claim 2, characterized in that: The width of the entrance into the needle hole (513) from the radial direction of the needle hole (513) is smaller than the inner diameter of the needle hole (513).

4. The needle groove plate according to claim 1, characterized in that: The needle hole (513) has a complete inner wall.

5. The needle groove plate according to claim 1, characterized in that: One end of the plug-in arm (52) is a plug-in end, and the other end is a limit end. The limit end is provided with a stopper protruding along the surface of the plug-in arm (52).

6. A puncture stent, characterized in that: The invention comprises the needle groove plate according to any one of claims 1 to 5.

7. A biopsy device, characterized in that: It comprises an ultrasonic probe and a puncture bracket, wherein the puncture bracket is provided with a needle groove plate as claimed in any one of claims 1 to 5.

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