Puncture stent and biopsy device

Abstract

A puncture stent includes a body (1), a rod (4), and a needle groove plate (5). The body (1) is capable of connecting an ultrasound probe and has a channel (13), the length of which is less than the length of the rod (4). The rod (4) can enter the channel (13) from its first end and slide back and forth within the channel (13) along a first direction parallel to the extension direction of the rod (4). The needle groove plate (5) is fixed to the second end of the rod (4) and has at least one needle hole (513) parallel to the first direction. The body (1) includes a clamp (11) and two spaced L-shaped walls (12), the clamp (11) being used to connect the ultrasound probe. According to this technical solution, not only is the structure of the puncture stent optimized and its volume reduced, but the manufacturing cost is also lowered.

Description

Technical Field

[0001] This invention relates to the field of medical supplies technology, and in particular to a puncture stent and biopsy device. Background Technology

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

[0003] Currently, prostate biopsy is commonly used to detect and screen for prostate diseases. During ultrasound biopsy, small samples of tissue are taken from different parts of the prostate to achieve a definitive diagnosis. Biopsy is minimally invasive and highly accurate, thus it has gained widespread clinical application. Common biopsy sampling routes are transrectal and transperineal. The transrectal route has some drawbacks, mainly including: 1. The ultrasound probe and puncture stent reach the prostate through the rectal entrance, increasing the risk of infection from bacteria within the rectum; 2. Limited puncture sites and blind spots. Therefore, transperineal puncture is currently the mainstream method for prostate biopsy, offering advantages such as aseptic operation, low infection risk, and comprehensive sampling.

[0004] Transperineal puncture requires the use of a puncture stent in conjunction with an ultrasound probe. Currently, hospitals mainly use puncture stents similar to a mesh sieve plate, which can only be used for puncture surgery after being fixed with a customized stepper. This has the following disadvantages: 1. It requires the use of a specific stepper, which is expensive and bulky, affecting the surgeon's flexibility during the operation; 2. It cannot separate the needle holder during the operation; 3. The large size of the sieve plate puncture stent placed in the perineum seriously increases the patient's discomfort during the operation. Summary of the Invention

[0005] In view of this, the present invention provides a puncture stent and biopsy device, which has the advantages of simple structure, low cost, flexible and convenient operation, and the ability to separate the puncture needle during surgery.

[0006] In one aspect, the present invention provides a puncture support, comprising a body, a rod, and a needle groove plate, wherein: the body is capable of connecting an ultrasound probe and has a channel, the length of the channel being less than the length of the rod; the rod is capable of entering the channel from its first end and reciprocating within the channel along a first direction parallel to the extension direction of the rod; the needle groove plate is fixed to the second end of the rod, and the needle groove plate is provided with at least one needle insertion hole parallel to the first direction.

[0007] Optionally, the main body includes a clamp and two spaced L-shaped walls; the clamp is used to connect an ultrasound probe; the L-shaped walls include vertical walls and horizontal walls, wherein the vertical walls extend from the outer surface of the clamp in a direction away from the clamp, and the two horizontal walls extend from the free edges of the two vertical walls toward each other, the free edges being parallel to the first direction, so that the two L-shaped walls and the outer wall of the clamp form a channel.

[0008] Optionally, the clamp includes a clamp body with an arched cross section and an arched wrench connected to the clamp body, with an L-shaped wall located on the clamp body; one edge of the clamp body is rotatably connected to one end of the wrench, and a first stepped edge is provided near the other edge of the clamp body, and a second stepped edge is provided at the other end of the wrench, the second stepped edge being used to engage with the first stepped edge so that the clamp body and the wrench form a closed loop.

[0009] Optionally, the upper surface of the main arm of the rod has an upper boss that protrudes upward and is located between two transverse walls, extending along the first direction; multiple recesses 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 also has a push button and two first elastic arms, wherein: the fixed end of the first elastic arm is fixed to the inner wall at the entrance of the notch, the first elastic arm is parallel to the first direction, so that the first elastic arm and the notch form a hole, the free ends of the two first elastic arms are provided with protrusions, and the two protrusions 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 fixed arm section protruding towards the entrance of the notch, the fixed arm section is used to abut against the free end of the first elastic arm, so that the protrusions cannot be separated after sinking into the recess, thereby restricting the rod from sliding in the channel along the first direction.

[0010] Optionally, a second fixed arm section is provided on the first fixed arm section, which extends away from the push button platform. A U-shaped groove parallel to the first fixed arm section is formed between the second fixed arm section and the first fixed arm section. A portion 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 part.

[0011] Optionally, the rod has a groove extending along the first direction at its lower part, forming an accommodating space between the groove and the outer wall of the clamp; the clamp has a single hole in its wall, and a second elastic arm is provided in the single hole, which is located on the wall of the clamp within the channel and near the end of the channel away from the needle groove 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 clamp wall, and the free end of the second elastic arm has a protrusion structure, which includes a first straight end face with a height greater than the wall thickness of the clamp, so that the protrusion structure protrudes into the interior of the channel and enters the accommodating space; the first end of the rod has an end wall perpendicular to the first direction, and 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.

[0012] Optionally, the front end of the main boom is provided with two parallel auxiliary booms extending along the first direction, with a defined interval between the two auxiliary booms. Each of the two auxiliary booms has a protruding baffle on its inner side, and the two baffles protrude towards each other. The lower surface of the main boom is provided with a lower boss arranged along its length direction. The surface of the lower boss fits against the outer wall of the clamp and extends to the bottom of the auxiliary boom. The bottom of the two auxiliary booms at the ends away from the main boom is connected to the beam. A third elastic arm is provided between the two auxiliary booms along the sliding direction of the rod. The two ends of the third elastic arm are connected to the end of the main boom and the beam, respectively. The upper surface of the third elastic arm is provided with a protrusion. The structure includes a second inclined surface and a second straight end face; the needle groove plate includes a needle groove arm and two plug-in arms, the two plug-in arms are arranged along the width direction of the needle groove arm at the bottom edge of the needle groove arm, the bottom surface of the needle groove arm is provided with a protruding structure, the protruding structure is located between the two plug-in arms, the protruding structure includes a third inclined surface and a third straight end face; the plug-in arm is inserted between the two auxiliary arms, and the upper surface of the plug-in arm is in contact with the lower surface of the baffle wall, the positions of the second inclined surface and the second straight end face, as well as the third inclined surface and the third straight end face are arranged such that the second straight end face abuts against the third straight end face, so that the plug-in arm cannot be withdrawn from between the two auxiliary arms.

[0013] Optionally, both ends of the beam protrude to the sides in the first direction, thereby abutting against the end face of the second end of the clamp near the rod to form a limit.

[0014] Optionally, multiple beams are arranged parallel to each other along the height direction of the needle groove arm on the side wall of the needle groove arm, and the needle hole is the gap between the multiple beams; or the needle hole has a complete inner wall.

[0015] Optionally, the needle groove arm includes a main body and a mating part. The mating surface of the mating part is provided with multiple parallel grooves. The multiple grooves are distributed along the height direction of the needle groove arm and penetrate the needle groove arm along the width direction of the needle groove arm. The mating surface of the main body and the mating surface of the mating part fit together to form a hole with a complete inner wall.

[0016] Another aspect of the present invention provides a puncture support, including a body, a rod, and a push button; the body has a channel; the rod is capable of entering the channel from a first end and reciprocating within the channel along a first direction parallel to the extension direction of the rod; the push button is connected to the body and is movable between a first position and a second position of the body, and a locking structure is provided between the push button and the rod, wherein when the push button moves to the first position, the push button and the rod are locked by the locking structure, and when the push button moves to the second position, the push button and the rod are released from locking.

[0017] Optionally, the main body includes a clamp and two spaced L-shaped walls. The L-shaped walls include vertical walls and horizontal walls. The vertical walls extend from the outer surface of the clamp in a direction away from the clamp. The two horizontal walls extend from the free edges of the two vertical walls towards each other. The free edges are parallel to the first direction, so that the two L-shaped walls and the outer wall of the clamp form a channel. The upper surface of the main arm of the rod has an upper boss that protrudes upward and is located between the two horizontal walls, and extends along the first direction.

[0018] Optionally, the two transverse walls have notches at the same position in the first direction; the puncture bracket also has two first elastic arms, 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 notches form a hole; 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, thereby realizing the connection between the push button and the main body, and the movement of the push button between the first position and the second position of the main body; the snap-fit ​​structure includes protrusions and concave points. The two first elastic arms have protrusions at their free ends, with the two protrusions facing each other. Multiple recesses are arranged in a line along the two side walls of the upper boss in the first direction. The root of the fixed arm has a fixed arm section that protrudes towards the entrance of the notch. When the button is in the first position, the fixed arm section abuts against the free end of the first elastic arm, causing the protrusions to sink into the recesses and become inseparable, thereby restricting the rod from sliding in the channel along the first direction. When the button is in the second position, the fixed arm section moves to the fixed end of the first elastic arm, causing the protrusions to separate from the recesses, thereby releasing the restriction on the rod sliding in the channel along the first direction.

[0019] Optionally, extension plates are provided at both ends of the push button platform. The extension plates are perpendicular to the lower surface of the push button platform and fit against the outer wall of the vertical wall. A pressing hand position is provided on the side of the extension plate away from the vertical wall.

[0020] Optionally, one of the cross arms has an opening; the push button includes a first push button platform and an insert plate, the insert plate is located on the lower surface of the first push button platform and is perpendicular to the first push button platform, the insert plate is inserted through the opening into the gap between the side wall of the upper boss and the inner wall of the vertical wall on the same side, and can slide in the gap along the vertical first direction, thereby realizing the connection between the push button and the main body, and the movement of the push button between the first position and the second position of the main body; the snap-fit ​​structure includes a plug-in part and a slot, a plurality of slots are provided on the side wall of the upper boss and the opening on the same side, the plurality of slots are arranged in a line along the first direction, and the plug-in part is provided on the side of the insert plate facing the upper boss; when the push button is in the first position, the plug-in part is located in the slot, and the insert plate is at least partially located in the opening, thereby restricting the rod from sliding in the channel along the first direction; when the push button is in the second position, the plug-in part is located outside the slot, thereby releasing the restriction on the rod from sliding in the channel along the first direction.

[0021] Optionally, both transverse walls have openings at the same position in the first direction; the lower surface of the first push button platform has two spaced-apart inserts, with the insertion part located on the insert on the same side as the slot; the straight-line distance between the two inserts is less than the straight-line distance between the bottoms of the two openings.

[0022] Optionally, at least one transverse wall has a first notch; a fourth elastic arm is provided within the first notch, the fixed end of the fourth elastic arm is fixed to the inner wall at the entrance of the first notch, the fourth elastic arm is parallel to the first direction, so that the fourth elastic arm and the first notch form a first hole; the push button includes a second push button platform and a first fixed arm, the first fixed arm is connected to the lower surface of the second push button platform through a connecting rod, a first strip hole is provided on the vertical arm along the first direction, the second push button platform is located outside the vertical arm, the connecting rod is located in the first strip hole, the first fixed arm is located in the first hole, and the first fixed arm can slide along the first direction within the first hole; the snap-fit ​​structure includes a first protrusion and a second... A recess is provided, and the free end of the fourth elastic arm is provided with a first protrusion, which protrudes towards the vertical arm; multiple first recesses are arranged in a line along the two side walls of the upper boss in the first direction; the root of the first fixed arm has a first fixed arm section protruding towards the entrance of the first notch. When the push button is in the first position, the first fixed arm section abuts against the free end of the fourth elastic arm, so that the first protrusion cannot be separated after sinking into the first recess, thereby restricting the rod from sliding in the channel in the first direction. When the push button is in the second position, the first fixed arm section moves to the fixed end of the fourth elastic arm, so that the first protrusion separates from the first recess, thereby releasing the restriction on the rod sliding in the channel in the first direction.

[0023] Optionally, it also includes a cover plate, the lower surface of which is fixedly connected to the upper surface of the transverse wall, thereby sealing the cover plate over the first opening in the channel.

[0024] Optionally, the push button includes a third push button platform and a connecting block. The connecting block is connected to the lower surface of the third push button platform. A second strip-shaped hole is provided on the vertical arm, perpendicular to the first direction. The third push button platform is located on the outside of the vertical arm, and the connecting block is located in the second strip-shaped hole. The connecting block can slide within the second strip-shaped hole perpendicular to the first direction. The locking structure includes a locking block and a locking groove. The locking block is provided on the side of the connecting block away from the third push button platform. The locking block is located between the lower surface of the horizontal wall and the upper surface of the main arm of the rod. The upper surface of the main arm of the rod is provided with multiple locking grooves along the first direction on the same side as the upper boss. When the push button is in the first position, the locking block is located in the locking groove, thereby restricting the rod from sliding in the channel along the first direction. When the push button is in the second position, the locking block separates from the locking groove, thereby releasing the restriction on the rod from sliding in the channel along the first direction.

[0025] Optionally, elastic locking hooks are provided on both sides of the connecting block along the direction perpendicular to the first direction, and the free ends of the elastic locking hooks abut against the inner wall of the second strip hole.

[0026] In another aspect, the present invention provides a biopsy device, including an ultrasound probe and the aforementioned puncture support; the clamp of the puncture support is fitted onto the outer wall of the ultrasound probe.

[0027] Optionally, the outer wall of the ultrasonic probe is provided with a limiting protrusion, and the clamp is provided with a slot that engages with the limiting protrusion.

[0028] According to the technical solution provided by the present invention, a needle groove plate is used to replace the existing square puncture frame, and the stepper structure is eliminated. This not only optimizes the structure of the puncture frame and reduces its volume, but also reduces the manufacturing cost. The rod and the main body can be flexibly telescopic, so that the position of the needle groove plate can be adjusted, thereby avoiding the needle groove plate pressing on the patient's perineum and reducing discomfort during the puncture process. Furthermore, the puncture needle can be separated from the puncture frame and the ultrasound probe, which is conducive to flexible operation by doctors. Attached Figure Description

[0029] For illustrative and not limiting purposes, the invention will now be described with reference to preferred embodiments thereof, particularly the accompanying drawings, in which:

[0030] Figure 1 A schematic diagram of a puncture stent provided for an embodiment of the present invention;

[0031] Figure 2 A structural diagram of the main body;

[0032] Figure 3 A structural diagram from another perspective, focusing on the main body;

[0033] Figure 4 This is a schematic diagram of the structure of a wrench;

[0034] Figure 5 A structural diagram of a wrench from another perspective;

[0035] Figure 6 A schematic diagram of adding a rubber pad to a wrench;

[0036] Figure 7 This is a schematic diagram of the push button structure;

[0037] Figure 8 A structural schematic diagram of the push button from another perspective;

[0038] Figure 9 This is a schematic diagram of the rod structure;

[0039] Figure 10 A schematic diagram of the connection between the rod and the needle groove plate;

[0040] Figure 11 This is a structural diagram of the top of the main body;

[0041] Figure 12 This is a cross-sectional view along the first direction at the first elastic arm;

[0042] Figure 13 This is a schematic diagram of the structure of the lower surface of the rod;

[0043] Figure 14 A structural schematic diagram of the rod from another perspective;

[0044] Figure 15 This is a sectional view of the front end of the rod;

[0045] Figure 16 A schematic diagram of the structure of a needle groove plate that partially encloses the needle hole;

[0046] Figure 17 for Figure 16 A structural diagram from another perspective;

[0047] Figure 18 This is a schematic diagram of the bottom structure of the needle groove plate;

[0048] Figure 19 A schematic diagram of the structure of a needle groove plate that fully encloses the needle holes;

[0049] Figure 20 for Figure 19 A structural diagram from another perspective;

[0050] Figure 21 This is a structural diagram of the main body;

[0051] Figure 22 A structural diagram of the mating parts;

[0052] Figure 23 This is a structural diagram to match the top clips;

[0053] Figure 24 This is to illustrate the structure of the part with the bottom protrusion;

[0054] Figure 25 This is a structural diagram showing the assembly of the main body and the mating parts.

[0055] Figure 26 This is a schematic diagram of the structure after the main body and the connecting parts are assembled.

[0056] Figure 27 A schematic diagram of a puncture stent provided for an embodiment of the present invention;

[0057] Figure 28 A schematic diagram of a puncture stent provided for an embodiment of the present invention;

[0058] Figure 29 for Figure 28 A schematic diagram of the structure at the central opening and slot;

[0059] Figure 30 for Figure 28 A schematic diagram of the structure of the first push button platform;

[0060] Figure 31 A schematic diagram of a puncture stent provided for an embodiment of the present invention;

[0061] Figure 32 for Figure 31 Top view of the push button with the cover plate off;

[0062] Figure 33 A schematic diagram of a puncture stent provided for an embodiment of the present invention;

[0063] Figure 34 for Figure 33 A schematic diagram of the middle push button;

[0064] Figure 35 for Figure 33 Partial sectional view of the push button when locked;

[0065] Figure 36 This is a schematic diagram of a biopsy device provided for an embodiment of the present invention.

[0066] In the picture:

[0067] 1: Main body; 2: Wrench; 3: Push button; 4: Rod; 5: Needle groove plate; 6: Rubber pad; 7: Cover plate;

[0068] 11: Clamp; 12: L-shaped wall; 13: Channel; 111: First stepped edge; 112: Rotating shaft; 113: Slot; 120: Hole; 121: First elastic wall; 122: Notch; 123: Vertical wall; 124: Horizontal wall; 1211: Protrusion; 1241: Opening; 1242: First notch; 1243: Fourth elastic arm; 1244: First hole; 130: Protruding structure; 131: Second elastic wall; 132: First inclined surface; 133: First straight end face; 134: Single hole;

[0069] 21: Rotating sleeve; 22: Arched part; 23: Second step edge; 24: Hand position;

[0070] 31: Push button platform; 32: Fixed arm; 33: Extension plate; 34: First push button platform; 35: Second push button platform; 36: First fixed arm; 37: Third push button platform; 311: Hand position groove; 321: First section of fixed arm; 322: U-shaped groove; 323: Second section of fixed arm; 331: Press hand position; 341: Insert plate; 3411: Insertion part; 371: Connecting block; 3711: Locking block; 3712: Elastic locking hook.

[0071] 41: Main arm; 42: Upper boss; 43: Lower boss; 44: Third elastic arm; 45: Beam; 46: End wall; 47: Groove; 411: Secondary arm; 421: Recess; 422: Slot; 423: First recess; 424: Locking groove; 440: Protruding structure; 441: Second inclined surface; 442: Second straight end face; 461: Inner side of end arm; 4111: Stop arm;

[0072] 51: Needle groove arm; 52: Insertion arm; 53: Main body; 54: Mating part; 511: Depth mark; 512: Specification mark; 513: Needle hole; 520: Protruding structure; 521: Third bevel; 522: Third straight end face; 531: Hole; 532: Docking platform; 533: Groove; 541: Buckle; 542: Protruding structure; 543: Protrusion; 5411: First plate; 5412: Second plate; 5413: Handle; 5421: Fourth bevel; 5422: Fourth straight end face; 5131: Groove;

[0073] 100: Puncture stent; 200: Ultrasonic probe. Detailed Implementation

[0074] In this embodiment of the invention, the puncture stent structure is effectively optimized, which not only reduces the size and cost, but also facilitates flexible operation by doctors and reduces patient discomfort. This will be explained in detail below.

[0075] Figure 1 A schematic diagram of a puncture stent provided for an embodiment of the present invention is shown below. Figure 1 As shown, the puncture support 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 extension direction (which is the left-right direction according to the perspective in the figure, and this sliding direction will be referred to as the "first direction" below). During the sliding process, the push button 3 can lock the rod 4. The structure of the puncture support will be further described below.

[0076] Figure 2 A structural diagram of the main body. (For example...) Figure 2 As shown, the main body 1 includes a clamp 11 and two spaced L-shaped walls 12; the clamp 11 is used to connect an ultrasound 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 according to the perspective in the figure), and the two horizontal walls 124 extend from the free sides of the two vertical walls 123 towards each other, the free sides being 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.

[0077] Figure 3 A structural diagram from another perspective of the main body, such as Figure 2 and Figure 3 As shown in the figure, from the perspective of the figure, the L-shaped wall 12 is positioned above the clamp body of the clamp 11, and a first stepped ridge 111 is provided on one side of the clamp body (shown in the figure). Figure 2 On the other side, a rotating shaft 112 is provided (shown in...). Figure 3 ).

[0078] The clamp 11 also includes a wrench 2 for connecting to the clamp body; Figure 4 This is a schematic diagram of the structure of a wrench; Figure 5 This is a structural diagram of a wrench from another perspective; such as Figure 4 and Figure 5 As shown, the main body of the wrench is an arched part 22, which has a certain elastic deformation capability. One end of the arched part 22 is provided with a rotating sleeve 21, and the other end is provided with a second stepped edge 23 for engaging with the first stepped edge 111. A hand position 24 is also provided at the second stepped edge 23.

[0079] 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 capability, allowing the opening width to be variable. This enables the rotating sleeve 21 to engage with the connecting shaft 112, allowing the wrench 2 to rotate within a certain range around the rotating shaft 112. The first stepped edge 111 can engage with the second stepped edge 23 on the wrench 2. The inclination direction of each step ensures that when in contact, they can only move relative to each other in the direction of decreasing inner diameter of the clamp. If it is necessary to enlarge the inner diameter of the clamp, the other end of the wrench 2 must be turned to separate the first stepped edge 111 from the second stepped edge 23. This method allows the puncture stent to be tightened simply by the operator's hand gripping the clamp with the web of their thumb after being fitted onto the ultrasound probe. Therefore, it is easy to control the size of the clamp 11 formed, and once tightened, it cannot loosen on its own. In addition, the multi-step stepped edges allow the clamp to be adapted to various diameters of the puncture stent, thereby improving the applicability of the puncture stent.

[0080] like Figures 2 to 5 As shown and explained above, the clamp body and the wrench 2 are separate structures. The ultrasonic probe is tightened by opening or closing the wrench 2. Alternatively, the clamp body and the wrench 2 can be set as an integral structure, that is, the clamp body and the wrench 2 form a closed loop with a constant inner diameter. By utilizing the friction between the inner surface of the clamp and the outer surface of the ultrasonic probe, the closed loop structure is fitted onto the ultrasonic probe when the puncture support is connected to the ultrasonic probe.

[0081] Figure 6 A schematic diagram of adding a rubber pad to a wrench, as shown below. Figure 6 As shown, a rubber pad 6 is provided on the inner wall of the arched part 22 along its curvature. The soft rubber pad 6 is made of rubber or soft materials such as TPE and TPU, and it is fixedly connected to the arched part 22, such as by bonding. By setting the structure of the rubber pad 6, the puncture bracket can be better assembled, the friction between the puncture bracket and the ultrasound probe can be increased, and the assembly can be more stable. In addition, since the rubber pad 6 is made of elastomer material, it can better protect the ultrasound probe from being scratched and damaged when installing and removing the puncture bracket.

[0082] Figure 7 This is a schematic diagram of the push button. Figure 8 This is a structural diagram of the push button from another perspective; as shown below. Figure 7 and Figure 8 As shown, the push button 3 includes a push button platform 31 and two fixing arms 32. The fixing 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 hand position groove 311 and / or a marking section. In use, the hand position groove 311 can increase the friction between the fingers and the hand position groove, and the marking section contains text and / or graphic information to help users understand the function and operation method of the push button 3.

[0083] Figure 9A schematic diagram of the rod structure, such as Figure 9 As shown, the rod 4 includes a main arm 41, an upper boss 42 located above the main arm 41, and a lower boss 43 located below the main arm 41. The upper boss 42 and the lower boss 43 extend along the length of the main arm 41, and the three are a single integrated structure, meaning the cross-sectional shape of the rod 4 is similar to the letter "+". The rod 4 can extend from its first end (according to...) Figure 9 (From the near end) The rod 4 enters the channel 13. 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 part of it is outside the channel 13, where the needle groove plate can be installed. The rod 4 can slide back and forth 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.

[0084] Figure 10 This is a schematic diagram of the connection between the rod and the needle groove plate; for example... Figure 10 As shown, the needle groove plate 5 is fixed to the second end of the rod 4 (i.e., Figure 9 At the distal end of the needle groove plate 5, at least one needle hole 513 parallel to the first direction is provided. The structure of the needle groove plate will be described later.

[0085] In this embodiment of the invention, the push button 3 can be used to lock the rod 4, thereby limiting the extension and retraction position of the rod 4 on the main body 1, and achieving the purpose of adjusting the position of the needle groove plate 5. For example... Figure 9 and Figure 10 As shown, multiple pits 421 are arranged in a line along the two side wall surfaces of the upper boss 42 in the first direction. Figure 11 This is a structural diagram of the top of the main body; Figure 12 This is a cross-sectional view along the first direction at the first elastic arm. (Example) Figure 2 , Figure 3 , Figure 11 and Figure 12As shown, the 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. The free ends of the two first elastic arms 121 are provided with protrusions 1211, and the two protrusions 1211 protrude towards each other. When the push button 3 is connected to the main body 1, the fixing arm 32 is inserted into the hole 120 and can slide in the first direction within the hole 120. The root of the fixing arm 32 has a fixing arm section 321 protruding towards the entrance of the notch 122. When the fixing 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 fixing arm section 321 can restrict the opening of the free end of the first elastic arm 121, thereby preventing the protrusion 1211 from disengaging from the recess 421. The first elastic arm 121 locks the rod 4, thereby achieving the purpose of restricting the rod 4 from sliding freely in the first direction. When the fixing arm section 321 slides to When the other end of the first elastic arm 121 is away from the free end, the free end of the first elastic arm 121 is released from the restriction of the fixed arm section 321. At this time, the rod 4 is manually pulled, and the protrusion 1211 can be released from the recess 421 under the action of external force. The rod 4 is continuously pulled, and the protrusion 1211 repeatedly sinks into the recess 421 and releases from the recess 421 until the rod 4 moves to the target position. At this time, the protrusion 1211 sinks into the recess 421, and the fixed arm section 321 is moved to the free end of the first elastic arm 121. The fixed arm section 321 locks the rod 4 again, and the position adjustment of the rod 4 is completed.

[0086] like Figure 8 As shown, a second fixed arm section 323 extending away from the push button platform 31 is provided on the first fixed arm section 321. 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 are located within the U-shaped groove 322.

[0087] In this embodiment of the invention, when the push button 3 is in the unlocked state, the rod 4 can slide freely within the channel 13 of the main body 1. To prevent the rod 4 from separating from the main body 1, a limiting structure is also provided between them. Figure 13 The lower surface of the rod (according to) Figure 1 A structural diagram (from a perspective), such as Figure 13 As shown, below rod 4 ( Figure 13 In the case of rod 4 (in the flipped state with its lower surface facing upwards), a groove 47 extending along the aforementioned first direction is provided, and the groove 47 can form an accommodating space with the outer wall of the clamp 11. Figure 12As shown, a single hole 134 is provided on the wall of the clamp 11, and a second elastic arm 131 is provided inside the single hole 134. The second elastic arm 131 has a certain elastic deformation capability. The single hole 134 is located on the wall of the clamp 11 inside the channel 13, and is close to the channel 13 away from the needle groove plate 5 (reference). Figure 1 One end of 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 clamp 11. The free end of the second elastic arm 131 is provided with a protruding structure 130. The protruding structure 130 includes a first straight end face 133 and a first inclined surface 132 with a height greater than the wall thickness of the clamp 11. Thus, the protruding structure 130 protrudes into the interior of the channel 13 and enters the accommodating space formed between the groove 47 and the outer wall of the clamp 11. Figure 13 As shown, the first end of rod 4 has an end wall 46 perpendicular to the first direction, and then referring to... Figure 11 When the rod is in 4 directions Figure 11 During the sliding process in channel 13, the outer side of end wall 46 passes through the first inclined surface 132, and the rod 4 moves towards the upper right. Figure 11 During the sliding process of the lower left section in channel 13, the inner side 461 can be blocked by the first straight end face 133, thereby stopping the sliding of the rod 4 and preventing the rod 4 from being removed from channel 13. In addition, the protruding structure 130 is enclosed within the aforementioned accommodating space, making it difficult to remove the rod 4 from channel 13, which helps to achieve single-use of the puncture stent and improves hygiene and safety.

[0088] In this embodiment of the invention, the needle groove plate 5 is snapped into the second end of the rod 4. Figure 14 A structural schematic diagram of the rod from another perspective; Figure 15 This is a sectional view of the front end of the rod. (Example) Figure 14 and 15 As shown, the front end of the main arm 41 has two auxiliary arms 411 extending parallel to each other along a first direction at the two side edges of the main arm 41. The two auxiliary arms 411 extend from the two side edges of the main arm 41, thus there is a gap between them. Each of the two auxiliary arms 411 has a protruding baffle 4111 on its inner side, and the two baffles 4111 protrude towards each other. The lower boss 43 extends to the bottom of the auxiliary arms 411, and the bottom of the two auxiliary arms 411 at the end away from the main arm 41 is 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. The two ends of the third elastic arm 44 are connected to the end of the main arm 41 and the beam 45, respectively. The upper surface of the third elastic arm 44 has a protruding structure 440, which includes a second inclined surface 441 and a second straight end surface 442.

[0089] Figure 16 A schematic diagram of the structure of a needle groove plate that partially encloses the needle hole; Figure 17 for Figure 16 A structural diagram from another perspective; Figure 18This is a schematic diagram of the bottom structure of the needle groove plate; as shown. Figures 16 to 18 As shown, the needle groove plate 5 includes a needle groove arm 51 and two insertion arms 52. The needle groove arm 51 has a depth mark 511 and a specification mark 512. The two insertion arms 52 are positioned along the width direction of the needle groove arm 51 at the bottom edge of the needle groove arm 51. A protruding structure 520 is provided on the bottom surface of the needle groove arm 51, located between the two insertion arms 52. The protruding structure 520 includes a third inclined surface 521 and a third straight end face 522. The insertion arms 52 are inserted between the two auxiliary arms 411, and the upper surface of the insertion arms 52 is in contact with the lower surface of the baffle wall 4111. The positions of the second inclined surface 441, the second straight end face 442, the third inclined surface 521, and the third straight end face 522 are such that the second straight end face 442 abuts against the third straight end face 522, thus preventing the insertion arms 52 from moving to the left (see reference here). Figure 10 The insertion arm 52 cannot move and therefore cannot exit between the two auxiliary arms 411. On the other hand, when the insertion arm 52 moves to the right, it is blocked by the upper boss 42 of the main arm 4, thus fixing the needle groove plate 5 to the main arm 4. It can also 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 realizing the single use of the medical device and improving hygiene and safety.

[0090] Among them, such as Figure 14 As shown, both ends of beam 45 protrude to the left and right respectively, thus abutting against the end face of the clamp 11 near the second end of rod 4 to form a limiting structure. This limiting structure cooperates with the limiting structure of the end wall 46 at the other end of rod 4, ensuring that both ends of rod 4 are limited, preventing rod 4 from separating from the main body 1. This also helps to achieve the single-use of medical devices.

[0091] In this embodiment of the invention, the needle hole 513 is either a fully enclosed hole or a semi-enclosed hole. Multiple beams are arranged parallel to each other along the height direction of the needle groove arm 51 on the side wall of the needle groove arm 51, and the gaps between the beams form a semi-enclosed hole; alternatively, the needle hole 513 is a hole with a complete inner wall that penetrates the needle groove plate 5, and this hole is a fully enclosed hole. Figure 16 and Figure 17 As shown, the needle hole 513 in the needle groove plate 5 is a semi-closed hole; Figure 19 A schematic diagram of the structure of a needle groove plate that fully encloses the needle holes; Figure 20 for Figure 19 A structural diagram from another perspective; Figure 19 and 20The needle insertion hole 513 in the needle groove plate 5 is a fully enclosed hole. The position of the needle insertion hole 513 corresponds one-to-one with the position of the depth mark 511 and conforms to the needle insertion route set in the software of the ultrasound machine; the size of the needle insertion hole 513 corresponds one-to-one with the specification mark 512; the model of the needle insertion 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 parallel to the opening on the puncture hole 513, and then the ultrasound probe and puncture holder can be quickly removed, leaving the puncture needle alone in the human body for drug administration or treatment.

[0092] Since the needle groove plate 5 is an independent structure, it can be snapped onto the rod 4. Therefore, the needle groove plate 5 can have a variety of structural forms. Figure 21 This is a structural diagram of the main body; Figure 22 A structural diagram of the mating parts; Figure 23 This is a structural diagram to match the top clips;

[0093] Figure 24 This is a schematic diagram to illustrate the structure with a raised bottom section. (See attached diagram.) Figures 21 to 24 As shown, the needle groove plate 5 can be further adopted as a split structure, that is, the needle groove arm 51 includes a main body part 53 and a mating part 54. The mating surface of the mating part 54 is provided with a groove 5131, and the mating surface of the main body part 53 and the mating part 54 are mated to form a closed hole.

[0094] The main body 53 and the mating part 54 are connected by a connecting assembly. The connecting assembly includes a hole 531 at the top of the main body 53 and a buckle 541 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 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 out of the surface of the mating part 54. This 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 protruding structure 542. The protruding structure 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 mating platform 532 that mates with the bottom of the mating part 54. The mating platform 532 is provided with a groove 533. The bottom of the mating part 54 is provided with a protrusion 543 for insertion into the groove 533.

[0095] Figure 25 This is a structural diagram showing the assembly of the main body and the mating parts. Figure 26 This is a schematic diagram of the structure after the main body and mating parts are assembled; for example... Figure 25As shown, when assembling the main body 53 and the mating part 54, the protrusion 543 is first inserted into the groove 533. The mating part 54 is then moved around the center point of the protrusion 543 and the groove 533, so that the mating surface of the mating part 54 fits against the mating surface of the main body 53. During this movement, the buckle 541 is inserted into the hole 531, and the second plate 5412 can deform downwards (by compression or manual pressing) and automatically reset. This allows the protrusion structure 542 to pass through the hole 531 and then automatically reset. Finally, the end face 5422 of the fourth finger abuts against the hole 531, forming a shape as shown. Figure 26 The assembly structure is shown. When disassembling, press the handle 5413 on the second plate 5412 to deform the second plate 5412. At this time, the protrusion 542 can disengage from the blockage of the side wall around the hole 531, thereby separating the buckle 541 from the hole 531. Finally, the protrusion 543 at the bottom of the mating part 54 can be pulled out from the groove 533.

[0096] The needle groove plate 5 adopts a split structure. When in use, different models of mating parts 54 can be assembled with the main body 53 to form different models of needle groove plates 5 to meet different usage needs in biopsy surgery.

[0097] The puncture stent provided in this embodiment has the following advantages:

[0098] 1. The clamp 11 is adjustable in tightness and can be fitted onto ultrasonic probes of different sizes, thus having high versatility;

[0099] 2. The installation of the pin slot plate does not require a dedicated stepper, saving costs;

[0100] 3. The reduced size of the needle groove plate, in turn, reduces the overall size of the puncture stent. The needle groove plate will not affect the doctor's operation, making it convenient and flexible to use.

[0101] 4. After the head of the ultrasound probe is inserted into the patient's rectum, the needle groove plate can fit tightly against the patient's perineum. Due to different body shapes, the degree of contact between the needle groove plate and the perineum varies. For example, for obese patients, the needle groove plate needs to be slightly adjusted backward. The rod in the puncture bracket provided in this embodiment of the invention is telescopic and adjustable, so that the puncture bracket can be adjusted to the optimal use state, which is convenient for doctors to use and improves the quality of surgery.

[0102] 5. A row of puncture holes 513 is provided on the needle groove plate 5. By rotating the ultrasound probe, the puncture support can be rotated, thus forming a fan-shaped puncture area, which can meet the needs of precise puncture at any part of the prostate without puncture blind spots.

[0103] 6. When the doctor needs to separate the needle holder, the semi-closed puncture port 513 can be used to quickly move the puncture needle or biopsy needle out parallel from the opening on the puncture port 513, so that the ultrasound probe and puncture support can be quickly removed. The puncture needle can be left in the human body alone for drug administration or treatment.

[0104] In this embodiment of the invention, the push button 3 is connected to the main body 1 and can move between a first position and a second position of the main body 1. A locking structure is provided between the push button 3 and the rod 4. When the push button 3 moves to the first position, the push button 3 and the rod 4 are locked together by the locking structure. When the push button 3 moves to the second position, the push button 3 and the rod 4 are released from locking. The locking methods between the push button 3 and the rod 4 include various types, which are described in detail below.

[0105] As the basic structure between the push button 3 and the rod 4, the main body 1 includes a clamp 11 and two spaced L-shaped walls 12. Each 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, and the two horizontal walls 124 extend towards each other from the free edges of the two vertical walls 123, with these free edges parallel to the first direction. Thus, the two L-shaped walls 12 and the outer wall of the clamp 11 form a channel 13. The upper surface of the main arm 41 of the rod 4 has an upper boss 42, which protrudes upwards and is located between the two horizontal walls 124, extending along the first direction. Based on this structure, the push button 3 and the rod 4 can move between a first position and a second position through a snap-fit ​​structure, achieving locking and unlocking functions.

[0106] The first locking method provided by the embodiments of the present invention is as follows: Figures 1 to 3 , Figures 7 to 12As shown, the two transverse walls 124 have notches 122 at the same position in the first direction; the puncture bracket also has two first elastic arms 121, the fixed ends of the first elastic arms 121 are fixed to the inner wall at the entrance of the notch 122, the first elastic arms 121 are parallel to the first direction, so that the first elastic arms 121 and the notch 122 form a hole 120; 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 fixed arms 32 are inserted into the hole 120 and can slide in the hole 120 along the first direction, thereby realizing the connection between the push button 3 and the main body 1, and the movement of the push button 3 between the first position and the second position of the main body 1; the snap-fit ​​structure includes a protrusion 1211 and a recess 421. The free ends of the two first elastic arms 121 are provided with protrusions 1211, and the two protrusions 1211 protrude towards each other; a plurality of recesses 421 are arranged in a line along the two side wall surfaces of the upper boss 42 in the first direction; the root of the fixed arm 32 has a fixed arm section 321 protruding towards the entrance of the notch 122. When the push button 3 is in the first position, the fixed arm section 321 abuts against the free end of the first elastic arm 121, so that the protrusions 1211 cannot be separated after sinking into the recesses 421, thereby restricting the rod 4 from sliding in the channel 13 in the first direction. When the push button 3 is in the second position, the fixed arm section 321 moves to the fixed end of the first elastic arm 121, so that the protrusions 1211 separate from the recesses 421, thereby releasing the restriction on the rod 4 sliding in the channel 13 in the first direction.

[0107] The second locking method provided by the embodiments of the present invention is as follows: Figure 27 This is a schematic diagram of a puncture stent provided for an embodiment of the present invention. (See attached diagram.) Figure 27 As shown, based on the first locking method, an extension plate 33 is further added. That is, extension plates 33 are provided on both sides of the push button platform 31. The extension plates 33 are perpendicular to the lower surface of the push button platform 31 and fit against the outer wall of the vertical wall 123. A pressing hand position 331 is provided on the side of the extension plate 33 away from the vertical wall 123. When pushing the push button platform 31, the extension plate 33 can be held by hand, which facilitates the application of force to the push button platform 31.

[0108] The third locking method provided by the embodiments of the present invention is as follows: Figure 28 A schematic diagram of a puncture stent provided for an embodiment of the present invention; Figure 29 for Figure 28 A structural diagram of the central opening and slot 422; Figure 30 for Figure 27 A schematic diagram of the structure of the first push button platform. (See diagram below.) Figures 28 to 30As shown, one of the horizontal arms has an opening 1241; the push button 3 includes a first push button platform 34 and an insert plate 341. The insert plate 341 is located on the lower surface of the first push button platform 34 and is perpendicular to the first push button platform 34. The insert plate 341 is inserted into the gap between the side wall of the upper boss 42 and the inner wall of the vertical wall 123 on the same side through the opening 1241, and can slide in the gap along the vertical first direction, thereby realizing the connection between the push button 3 and the main body 1, and the movement of the push button 3 between the first position and the second position of the main body 1; the snap-fit ​​structure includes a plug-in part 3411 and a slot 422, the upper boss Multiple slots 422 are provided on the side wall of the 42th side, which is the same as the opening 1241. The multiple slots 422 are arranged in a line along the first direction. The insertion plate 341 is provided with a plug-in part 3411 on the side facing the upper boss 42. When the push button 3 is in the first position, the plug-in part 3411 is located in the slot 422, and the insertion plate 341 is at least partially located in the opening 1241, thereby restricting the rod 4 from sliding in the channel 13 along the first direction. When the push button 3 is in the second position, the plug-in part 3411 is located outside the slot 422, thereby releasing the restriction on the rod 4 sliding in the channel 13 along the first direction. The moving direction of the first push button platform 34 is perpendicular to the first direction. With this method, there is no need to use an elastic arm structure, and the plug-in part 3411 can be directly inserted into the slot 422.

[0109] Continue to refer to Figures 28 to 30 As shown in the figure, both transverse walls 124 have openings 1241 at the same position in the first direction; the lower surface of the first push button platform 34 has two spaced-apart inserts 341, with insertion parts 3411 located on the inserts 341 on the same side as the slot 422; the straight-line distance between the two inserts 341 is less than the straight-line distance between the bottoms of the two openings 1241. Of the two inserts 341 of the first push button platform 34, one has an insertion part 3411, while the other is only a plate structure. The insert 341 without an insertion part 3411 acts as a guide, reciprocating within the corresponding opening 1241, thereby improving the stability of the first push button platform 34. In addition, protruding elastic structures, such as plastic strips, are provided on both sides of the two inserts 341. These elastic structures fit against the inner wall of the opening 1241, providing damping and preventing the first push button platform 34 from moving arbitrarily.

[0110] The fourth locking method provided by the embodiments of the present invention is as follows: Figure 31 A schematic diagram of a puncture stent provided for an embodiment of the present invention; Figure 32 for Figure 31 A top view of the push button in state 7 (without cover). (See image below.) Figure 31 and 32As shown, at least one transverse wall 124 has a first notch 1242; a fourth elastic arm 1243 is provided inside the first notch 1242, the fixed end of the fourth elastic arm 1243 is fixed to the inner wall at the entrance of the first notch 1242, the fourth elastic arm 1243 is parallel to the first direction, so that the fourth elastic arm 1243 and the first notch 1242 form a first hole 1244; the push button 3 includes a second push button platform 35 and a first fixed arm 36, the first fixed arm 36 is connected to the second push button platform 35 through a connecting rod 4. The lower surface is connected, the vertical arm 123 is provided with a first strip hole arranged along the first direction, the second push button platform 35 is located on the outside of the vertical arm 123, the connecting rod 4 is located in the first strip hole, the first fixed arm 36 is located in the first hole 1244, and the first fixed arm 36 can slide along the first direction in the first hole 1244; the snap-fit ​​structure includes a first protrusion and a first recess 423, and the free end of the fourth elastic arm 1243 is provided with a first protrusion (not shown in the figure, the structure of the first protrusion and the fourth elastic arm 1243 is the same as the first protrusion). Figure 12 The first elastic arm 121 and the protrusion 1211 are the same, the first protrusion protrudes towards the vertical arm 123; a plurality of first recesses 423 are arranged in a line along the two side wall surfaces of the upper boss 42 in the first direction; the root of the first fixed arm 36 has a first fixed arm section protruding towards the entrance of the first notch 1242 (not shown in the figure, the first fixed arm section is the same as the first fixed arm 1211); Figure 8 (The first fixed arm section 321 is the same). When the push button 3 is in the first position, the first fixed arm section abuts against the free end of the fourth elastic arm 1243, causing the first protrusion to sink into the first recess 423 and become inseparable, thereby restricting the rod 4 from sliding in the first direction within the channel 13. When the push button 3 is in the second position, the first fixed arm section moves to the fixed end of the fourth elastic arm 1243, causing the first protrusion to separate from the first recess 423, thereby releasing the restriction on the rod 4 sliding in the first direction within the channel 13. In this embodiment of the invention, the push button 3 is located on the outside of the vertical arm 123. During puncture operation, the push button 3 can avoid being located directly below the puncture needle, thereby reducing the influence of the puncture needle on the operation of the push button 3.

[0111] like Figure 31 As shown, the puncture frame provided in this embodiment of the invention also includes a cover plate 7. The lower surface of the cover plate 7 is fixedly connected to the upper surface of the transverse wall 124, thereby sealing the cover plate 7 over the first notch 1242 of the channel 13. The cover plate 7 blocks the first notch 1242 and the fourth elastic arm 1243, preventing the locking structure from being exposed, thereby improving the stability of the locking.

[0112] The fifth locking method provided by the embodiments of the present invention is as follows: Figure 33 A schematic diagram of a puncture stent provided for an embodiment of the present invention; Figure 34 for Figure 33 Schematic diagram of the structure of the middle push button 3; Figure 35 for Figure 33 A partial sectional view of the push button when locked. (e.g.) Figures 33 to 35 As shown, the push button 3 includes a third push button platform 37 and a connecting block 371. The connecting block 371 is connected to the lower surface of the third push button platform 37. The vertical arm 123 is provided with a second strip-shaped hole arranged perpendicular to the first direction. The third push button platform 37 is located outside the vertical arm 123, and the connecting block 371 is located in the second strip-shaped hole. The connecting block 371 can slide in the second strip-shaped hole perpendicular to the first direction. The locking structure includes a locking block 3711 and a locking groove 424. The side of the connecting block 371 away from the third push button platform 37 is provided with a locking block 3711. 711, the locking block 3711 is located between the lower surface of the transverse wall 124 and the upper surface of the main arm 41 of the rod 4; the upper surface of the main arm 41 of the rod 4 is provided with a plurality of locking grooves 424 arranged along the first direction on the same side of the upper boss 42; when the push button 3 is in the first position, the locking block 3711 is located in the locking groove 424, thereby restricting the rod 4 from sliding in the channel 13 along the first direction; when the push button 3 is in the second position, the locking block 3711 is separated from the locking groove 424, thereby releasing the restriction on the rod 4 from sliding in the channel 13 along the first direction. In this embodiment of the invention, the push button 3 moves along the height direction of the vertical arm 123 on the outer wall of the vertical arm 123, wherein the two ends of the connecting block 371 are provided with elastic locking hooks 3712 along the perpendicular direction to the first direction, the free end of the elastic locking hook 3712 abuts against the inner wall of the second strip hole, the elastic locking hook 3712 plays a damping role, and the push button 3 moves freely.

[0113] The embodiments of the present invention provide five locking methods, including different force application positions, different locking directions, locking positions, and operating positions, which can meet more operational needs and thus improve the convenience of product use.

[0114] The present invention also provides a biopsy device, including an ultrasound probe 200 and a puncture stent 100; Figure 36 This is a schematic diagram of the biopsy device; as shown. Figure 36 As shown, the clamp 11 of the main body 1 is fitted onto the outer wall of the ultrasound probe. To further improve the stability of the connection between the puncture support 100 and the ultrasound probe 200, as... Figure 3 As shown, the clamp 11 is provided with a groove 113 that engages 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 as an arc surface with the same curvature as the outer wall of the ultrasonic probe 200.

[0115] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A puncture stent, characterized in that, Includes a main body (1), a rod (4), and a needle groove plate (5), wherein: The main body (1) can be connected to the ultrasonic probe and has a channel (13), the length of which is less than the length of the rod (4); The rod (4) can enter the channel (13) from its first end and slide back and forth in the channel (13) along a first direction parallel to the extension direction of the rod (4); The needle groove plate (5) is fixed to the second end of the rod (4), and the needle groove plate (5) is provided with at least one needle hole (513) parallel to the first direction; The main body (1) includes a clamp (11) and two spaced L-shaped walls (12); 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), and the two horizontal walls (124) extend from the free sides of the two vertical walls (123) respectively, the free sides being 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); The clamp (11) includes a clamp body with an arched cross section and an arched wrench (2) connected to the clamp body, and an L-shaped wall (12) is located on the clamp body; The clamp body is rotatably connected to one end of the wrench (2) near one edge, and a first stepped edge (111) is provided near the other edge of the clamp body. A second stepped edge (23) is provided at the other end of the wrench (2). The second stepped edge (23) is used to engage with the first stepped edge (111) so that the clamp body and the wrench (2) form a closed loop. The upper surface of the main arm (41) of the rod (4) has an upper boss (42), which protrudes upward and is located between two transverse walls (124) and extends along the first direction; 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. The two transverse walls (124) have notches (122) at the same location in the first direction; The puncture stent also has a push button (3) and two first elastic arms (121), wherein: The fixed end of the first elastic arm (121) is fixed to the inner wall at the entrance of the notch (122). 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 towards each other. 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 fixed arms (32) are 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 towards the entrance of the notch (122). The fixed arm section (321) is used to abut against the free end of the first elastic arm (121), so that the protrusion (1211) is stuck into the recess (421) and cannot be separated, thereby limiting the rod (4) from sliding in the channel (13) along the first direction. The first fixed arm (321) is provided with a second fixed arm (323) extending away from the push button platform (31). A U-shaped groove (322) parallel to the first direction is formed between the second fixed arm (323) and the first fixed arm (321). A portion of the two sides 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 part; The rod (4) has a groove (47) extending along the first direction at its lower part, and an accommodating space is formed between the groove (47) and the outer wall of the clamp (11); The clamp (11) has a single hole (134) on its wall, and a second elastic arm (131) is provided in the single hole (134). The single hole (134) is located on the wall of the clamp (11) 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 clamp (11). The free end of the second elastic arm (131) is provided with a protruding structure (130). The protruding structure (130) includes a first straight end face (133) with a height greater than the wall thickness of the clamp (11). Thus, the protruding structure (130) protrudes into the interior of the channel (13) and enters the accommodating space. The first end of the rod (4) has an end wall (46) perpendicular to the first direction. During the sliding process of the rod (4), the inner side (461) of the end wall can be blocked by the first straight end face (133) to stop the sliding. The front end of the main arm (41) is provided with two parallel secondary arms (411) extending along the first direction. A limited interval is provided between the two secondary arms (411). Each of the two secondary arms (411) has a protruding baffle (4111) on its inner side. The two baffles (4111) protrude toward each other. The lower surface of the main arm (41) is provided with a lower boss (43) arranged along its length direction. The surface of the lower boss (43) is in contact with the outer wall of the clamp (11). The lower boss (43) extends to the bottom of the auxiliary arm (411). The bottom of the two auxiliary arms (411) at the end away from the main arm (41) is 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). The two ends of the third elastic arm (44) are respectively connected to the end of the main arm (41) and the beam (45). The upper surface of the third elastic arm (44) is provided with a protrusion structure (440). The protrusion structure includes a second inclined surface (441) and a second straight end surface (442). The needle groove plate (5) includes a needle groove arm (51) and two plug arms (52). The two plug arms (52) are arranged along the width direction of the needle groove arm (51) at the bottom edge of the needle groove arm (51). The bottom surface of the needle groove arm (51) is provided with a protrusion structure (520). The protrusion structure (520) is located between the two plug arms (52). The protrusion structure (520) includes a third inclined surface (521) and a third straight end surface (522). The plug arm (52) is inserted between the two auxiliary arms (411), and the upper surface of the plug arm (52) is in contact with the lower surface of the baffle (4111). The positions of the second inclined surface (441), the second straight end face (442), the third inclined surface (521), and the third straight end face (522) are arranged so that the second straight end face (442) abuts against the third straight end face (522), so that the plug arm (52) cannot be withdrawn from between the two auxiliary arms (411). Both ends of the beam (45) protrude to the sides of the first direction, so as to abut against the end face of the second end of the clamp (11) near the rod (4) to form a limit; On the side wall of the needle groove arm (51), multiple beams are arranged parallel to each other along the height direction of the needle groove arm (51), and the needle hole (513) is the gap between the multiple beams; or The needle hole (513) has a complete inner wall; The needle groove arm (51) includes a main body (53) and a mating part (54). The mating part (54) has a plurality of parallel grooves (5131) on its mating surface. The plurality of 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 mating surface of the main body (53) and the mating surface of the fitting part (54) fit together to form a hole with a complete inner wall.

2. A puncture stent, characterized in that, It includes a main body (1), a rod (4), and a push button (3); The main body (1) has a channel (13); The rod (4) can enter the channel (13) from its first end and slide back and forth in the channel (13) along a first direction parallel to the extension direction of the rod (4); The push button (3) is connected to the main body (1) and can move between the first position and the second position of the main body (1). A snap-fit ​​structure is provided between the push button (3) and the rod (4). When the push button (3) moves to the first position, the push button (3) and the rod (4) are locked together by the snap-fit ​​structure. When the push button (3) moves to the second position, the push button (3) and the rod (4) are unlocked. The main body (1) includes a clamp (11) and two spaced L-shaped walls (12). The L-shaped walls include vertical walls (123) and horizontal walls (124). The vertical walls (123) extend from the outer surface of the clamp (11) in a direction away from the clamp (11). The two horizontal walls (124) extend from the free sides of the two vertical walls (123) towards each other. The free sides are parallel to the first direction. Thus, the two L-shaped walls (12) and the outer wall of the clamp (11) form a channel (13). The upper surface of the main arm (41) of the rod (4) has an upper boss (42), which protrudes upward and is located between two transverse walls (124) and extends along the first direction; The two transverse walls (124) have notches (122) at the same position in the first direction; the puncture bracket also has two first elastic arms (121), the fixed ends of the first elastic arms (121) are fixed to the inner wall at the entrance of the notch (122), the first elastic arms (121) are parallel to the first direction, so that the first elastic arms (121) and the notch (122) form a hole (120); 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 fixed arms (32) are inserted into the hole (120) and can slide in the hole (120) along the first direction, thereby realizing the connection between the push button (3) and the main body (1) and the movement of the push button (3) between the first position and the second position of the main body (1). The snap-fit ​​structure includes protrusions (1211) and recesses (421). The free ends of the two first elastic arms (121) are provided with protrusions (1211), and the two protrusions (1211) protrude towards each other. Multiple recesses (421) are arranged in a line along the two side wall surfaces of the upper boss (42) in the first direction. The root of the fixed arm (32) has a fixed arm section (321) that protrudes toward the entrance of the notch (122). When the push button (3) is in the first position, the fixed arm section (321) abuts against the free end of the first elastic arm (121), causing the protrusion (1211) to sink into the recess (421) and become unable to separate, thereby restricting the rod (4) from sliding in the channel (13) along the first direction. When the push button (3) is in the second position, the fixed arm section (321) moves to the fixed end of the first elastic arm (121), causing the protrusion (1211) to separate from the recess (421), thereby releasing the restriction on the rod (4) from sliding in the channel (13) along the first direction.

3. The puncture stent according to claim 2, characterized in that, The push button platform (31) has extension plates (33) on both sides. The extension plates (33) are perpendicular to the lower surface of the push button platform (31) and fit against the outer wall of the vertical wall (123). The extension plate (33) has a press hand position (331) on the side away from the vertical wall (123).

4. The puncture stent according to claim 2, characterized in that, An opening (1241) is provided on one of the transverse walls (124); The push button (3) includes a first push button platform (34) and a insert plate (341). The insert plate (341) is located on the lower surface of the first push button platform (34) and is perpendicular to the first push button platform (34). The insert plate (341) is inserted into the gap between the side wall of the upper boss (42) and the inner wall of the vertical wall (123) on the same side through the opening (1241), and can slide in the gap along the vertical first direction, thereby realizing the connection between the push button (3) and the main body (1), and the push button (3) can move between the first position and the second position of the main body (1). The snap-fit ​​structure includes a plug-in part (3411) and a slot (422). Multiple slots (422) are provided on the side wall of the upper boss (42) on the same side as the opening (1241). The multiple slots (422) are arranged in a line along the first direction. The plug-in part (3411) is provided on the side of the plug plate (341) facing the upper boss (42). When the push button (3) is in the first position, the plug (3411) is located inside the slot (422) and the insert plate (341) is at least partially located inside the opening (1241), thereby restricting the rod (4) from sliding in the channel (13) in the first direction. When the push button (3) is in the second position, the plug (3411) is located outside the slot (422), thereby releasing the restriction on the rod (4) from sliding in the channel (13) in the first direction. Both transverse walls (124) have openings (1241) at the same position in the first direction; The lower surface of the first push button platform (34) is provided with two spaced insert plates (341), and the insertion part (3411) is located on the insert plate (341) on the same side as the slot (422); The straight-line distance between the two inserts (341) is less than the straight-line distance between the bottoms of the two openings (1241).

5. The puncture stent according to claim 2, characterized in that, At least one transverse wall (124) has a first notch (1242); a fourth elastic arm (1243) is provided in the first notch (1242), the fixed end of the fourth elastic arm (1243) is fixed to the inner wall at the entrance of the first notch (1242), the fourth elastic arm (1243) is parallel to the first direction, so that the fourth elastic arm (1243) and the first notch (1242) form a first hole (1244); The push button (3) includes a second push button platform (35) and a first fixed arm (36). The first fixed arm (36) is connected to the lower surface of the second push button platform (35) through a connecting rod. The vertical wall (123) is provided with a first strip hole arranged along the first direction. The second push button platform (35) is located outside the vertical wall (123). The connecting rod is located in the first strip hole. The first fixed arm (36) is located in the first hole (1244). The first fixed arm (36) can slide along the first direction in the first hole (1244). The snap-fit ​​structure includes a first protrusion (1245) and a first recess (423). The free end of the fourth elastic arm (1243) is provided with a first protrusion, which protrudes toward the vertical wall (123). Multiple first recesses (423) are arranged in a line along the two side wall surfaces of the upper boss (42) in the first direction. The root of the first fixed arm (36) has a first fixed arm section protruding towards the entrance of the first notch (1242). When the push button (3) is in the first position, the first fixed arm section abuts against the free end of the fourth elastic arm (1243), so that the first protrusion is stuck in the first recess (423) and cannot be separated, thereby restricting the rod (4) from sliding in the channel (13) along the first direction. When the push button (3) is in the second position, the first fixed arm section moves to the fixed end of the fourth elastic arm (1243), so that the first protrusion is separated from the first recess (423), thereby releasing the restriction on the rod (4) from sliding in the channel (13) along the first direction. It also includes a cover plate (7), the lower surface of which is fixedly connected to the upper surface of the transverse wall (124), so that the cover plate (7) covers the first notch (1242) of the channel (13).

6. The puncture stent according to claim 2, characterized in that, The push button (3) includes a third push button platform (37) and a connecting block (371). The connecting block (371) is connected to the lower surface of the third push button platform (37). The vertical wall (123) is provided with a second strip hole arranged perpendicular to the first direction. The third push button platform (37) is located outside the vertical wall (123). The connecting block (371) is located inside the second strip hole. The connecting block (371) can slide within the second strip hole perpendicular to the first direction. The snap-fit ​​structure includes a locking block (3711) and a locking groove (424). The locking block (3711) is provided on the side of the connecting block (371) away from the third push button platform (37). The locking block (3711) is located between the lower surface of the transverse wall (124) and the upper surface of the main arm (41) of the rod (4). The upper surface of the main arm (41) of the rod (4) is provided with a plurality of locking grooves (424) arranged along the first direction on the same side of the upper boss (42). When the push button (3) is in the first position, the locking block (3711) is located in the locking groove (424), thereby restricting the rod (4) from sliding in the channel (13) along the first direction. When the push button (3) is in the second position, the locking block (3711) is separated from the locking groove (424), thereby releasing the restriction on the rod (4) from sliding in the channel (13) along the first direction. The connecting block (371) has elastic locking hooks (3712) on both sides along the direction perpendicular to the first direction, and the free end of the elastic locking hooks (3712) abuts against the inner wall of the second strip hole.

7. A biopsy device, characterized in that, Includes an ultrasound probe and a puncture stent as described in any one of claims 1 to 6; The clamp (11) of the puncture stent is fitted onto the outer wall of the ultrasound probe.

8. The biopsy device according to claim 7, characterized in that, The outer wall of the ultrasonic probe is provided with a limiting protrusion, and the clamp (11) is provided with a slot (113) that engages with the limiting protrusion.

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