A needle holder structure and a puncture stent

Abstract

The present invention relates to the technical field of puncture devices, and particularly to a needle holder structure and a puncture bracket. The needle holder structure includes an angle control plate, a needle groove plate, and a locking device; the needle groove plate includes a plurality of semi-open needle insertion channels. The angle control plate and the needle groove plate are attached to form a closed needle insertion channel. The first end of the needle insertion channel is the guiding inlet of the needle body, and the second end is the guiding outlet of the needle body. The end where the guiding inlet is located is the needle insertion end; the locking device includes a first clamping portion and a second clamping portion. The first clamping portion is rotatably connected to the angle control plate, and the second clamping portion is fixedly connected to the needle groove plate; the first clamping portion includes a driving handle, and the driving handle is located at the needle insertion end of the angle control plate. By pulling the driving handle, the first clamping portion can move between a first position and a second position, so as to realize the clamping and separation of the first clamping portion and the second clamping portion. The solution provided by the present invention leaves as much operating space as possible for puncture operations and the separation operation of the needle holder structure.

Description

Technical Field

[0001] The present invention relates to the technical field of puncture devices, and particularly to a needle holder structure and a puncture stent. Background Art

[0002] Ultrasound-guided interventional surgery is a new technology developed on the basis of ultrasound imaging. During the surgery, an ultrasound probe puncture stent needs to be installed on the ultrasound probe. Then, under the precise guidance of the ultrasound probe puncture stent, puncture operations can be carried out. The puncture needle can directly reach the lesion, and surgical operations such as aspiration, drug administration, and catheter placement can be performed, or fine treatment operations such as microwave, radiofrequency, and laser energy can be given. Ultrasound-guided interventional surgery is different from traditional surgical operations. It does not require an incision and only needs a thin needle puncture to complete. The patient has less pain, does not need to be hospitalized, and is relatively safe, simple to operate, and has a relatively high practical value.

[0003] The ultrasound probe puncture stent is mainly used to guide the puncture needle to quickly and accurately reach the lesion target, and has the function of quickly releasing the puncture needle after reaching the lesion tissue. That is, after the puncture needle reaches the lesion target, the ultrasound probe puncture stent and the puncture needle can be separated with effort, and the ultrasound probe and the ultrasound probe puncture stent can be separately removed, leaving the puncture needle on the patient. In ultrasound-guided interventional surgery, the role of the ultrasound probe puncture stent is particularly important, and it plays a crucial role in the surgical efficiency, surgical success rate, and surgical safety.

[0004] Currently, for the puncture stents on the market, there are no restrictions on the position of the needle insertion end and the position of the separation operation hand position. If the position of the needle insertion end or the separation operation hand position is relatively close to the patient's body, there may be a situation of insufficient operating space during use, which is not conducive to the puncture operation of the doctor. Summary of the Invention

[0005] The present invention provides a needle holder structure and a puncture stent. The needle insertion end of the needle holder structure and the driving hand position for the separation operation of the needle holder structure are both located at the ends of the angle control plate and the needle groove plate. During the puncture surgery, this end is the farthest from the patient's body, which can leave the largest operating space for the puncture operation and the separation operation of the needle holder structure, thereby facilitating the smooth progress of the puncture surgery.

[0006] In one aspect of the present invention, a needle holder structure is provided, which includes an angle control plate, a needle groove plate, and a locking device; the needle groove plate includes a plurality of semi-open needle insertion channels, and the angle control plate and the needle groove plate are attached to form a closed needle insertion channel. The first end of the needle insertion channel is the guiding inlet of the needle body, and the second end is the guiding outlet of the needle body. The end where the guiding inlet is located is the needle insertion end of the angle control plate and the needle groove plate; the locking device includes a first clamping portion and a second clamping portion. The first clamping portion is rotatably connected to the angle control plate, and the second clamping portion is fixedly connected to the needle groove plate; wherein, the first clamping portion includes a driving handle position, and the driving handle position is located at the needle insertion end of the angle control plate. By pulling the driving handle position, the first clamping portion can move between a first position and a second position, so as to realize the clamping and separation of the first clamping portion and the second clamping portion.

[0007] Optionally, a handle arm is provided at the needle insertion end of the needle groove plate, and the handle arm is perpendicular to the plate surface of the needle groove plate.

[0008] Optionally, the angle control plate includes a first needle insertion plate, and the first plate surface of the first needle insertion plate is the needle insertion wall; the needle groove plate includes a second needle insertion plate, and the needle insertion channel is arranged on the first plate surface of the second needle insertion plate. The handle arm is perpendicular to the second plate surface of the second needle insertion plate, and the needle insertion wall and the first plate surface of the second needle insertion plate are attached to form a closed needle insertion channel; the first needle insertion plate and the second needle insertion plate are fan-shaped plates, including an arc end and a center end, and the needle insertion ends of the angle control plate and the needle groove plate are the arc ends of the first needle insertion plate and the second needle insertion plate.

[0009] Optionally, the first clamping portion includes a rocker, and the rocker includes a rocker arm. The first end of the rocker arm is rotatably connected to the first needle insertion plate, and the second end is provided with a driving handle position; the driving handle position includes a rocker block, and the rocker block is fixedly connected to the second end of the rocker arm. A clamping interface is provided on the side of the rocker block that fits against the second plate surface of the first needle insertion plate, and a positioning catch is provided on the inner wall at the top of the clamping interface; a first chute is arranged along the arc surface of the arc end of the first needle insertion plate, and the positioning catch is clamped in the first chute; the rocker block slides in the first chute, so that the first clamping portion can move between a first position and a second position.

[0010] Optionally, a first positioning groove and a second positioning groove are respectively provided on both sides of the positioning catch; a first positioning bump and a second positioning bump are respectively provided at both ends of the first chute; when the rocker arm is in the first position, the first positioning groove is clamped with the first positioning bump, and when the rocker arm is in the second position, the second positioning groove is clamped with the second positioning bump.

[0011] Optionally, a convex platform and a first anti-slip rib are provided on the side of the rocker block away from the second plate surface of the first needle insertion plate.

[0012] Optionally, a plurality of labels are provided at the arc end of the first needle insertion plate, and the labels are located on the end surface of the arc end of the first needle insertion plate and on the side of the guiding inlet.

[0013] Optionally, a fixing hole is provided at the first end of the rocker arm, and a rotating boss is provided on the second plate surface of the first needle insertion plate. The fixing hole is sleeved with the rotating boss. A protruding positioning block is provided on the first side of the rocker arm, and the rocker arm drives the positioning block to move with the rotating boss as the center. The second clamping portion includes a clamping plate, and the clamping plate is provided at the first side end of the second needle insertion plate. The clamping plate is perpendicular to the plane where the second needle insertion plate is located, and a positioning hole is provided on the clamping plate. When the positioning block is in the first position, the positioning block and the clamping plate are on the same side of the first needle insertion plate and the second needle insertion plate, and the positioning block is clamped in the positioning hole.

[0014] Optionally, a first stop wall and a second stop wall extending away from the first needle insertion plate in the plane where the first needle insertion plate is located are provided at the first side end of the first needle insertion plate. There is a gap between the first stop wall and the second stop wall to form a first notch. When the needle insertion wall of the first needle insertion plate is attached to the first plate surface of the second needle insertion plate, the clamping plate is inserted into the first notch and abuts against the first stop wall and the second stop wall.

[0015] Optionally, the first needle insertion plate further includes a connecting arm, and the connecting arm is located on one side of the second side end of the first needle insertion plate. The plane where the first needle insertion plate is located is perpendicular to the surface of the connecting arm, and there is a gap between the surface of the connecting arm and the first needle insertion plate to form a second sliding groove. The top end and the bottom end of the connecting arm are respectively fixedly connected to the extending portions of the second side end of the first needle insertion plate. The first clamping portion further includes a slider. The slider includes a slider arm. A vertical arm is perpendicularly provided on the first plate surface of the slider arm, and the vertical arm is located in the second sliding groove. A protruding shaft is perpendicularly provided on the second plate surface of the slider arm. A strip-shaped third sliding groove is provided on the side of the rocker arm that is attached to the second plate surface of the first needle insertion plate. The protruding shaft is provided in the third sliding groove. When the rocker arm swings, the third sliding groove drives the protruding shaft to move, so that the vertical arm moves between the first position and the second position in the second sliding groove. The second clamping portion further includes a locking block, and the locking block is provided at the second side end of the second needle insertion plate. The locking block is in the same plane as the second needle insertion plate. A bayonet is provided on the surface of the vertical arm. When the needle insertion wall is attached to the first plate surface of the second needle insertion plate and the vertical arm moves to the first position, the bayonet is clamped with the locking block.

[0016] In another aspect of the present invention, a puncture bracket is further provided, which includes an annular frame body. The outer wall of the frame body is connected to the above-mentioned needle frame structure. The planes where the angle control plate and the needle groove plate are located are parallel to the axis of the frame body.

[0017] In the technical solution provided by the present invention, the needle insertion end of the needle frame structure and the driving hand position for the separation operation of the needle frame structure are both located at the ends of the angle control plate and the needle groove plate. During the puncture operation, this end is the farthest from the patient's body, which can leave as large an operation space as possible for the puncture operation and the separation operation of the needle frame structure, helping to avoid blocking the doctor's operation as much as possible, and thus facilitating the smooth progress of the puncture operation. Description of the Drawings

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

[0019] Figure 1 is a schematic assembly diagram of a puncture stent and an ultrasonic probe provided by an embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of needle insertion when the puncture stent provided by an embodiment of the present invention is in use;

[0021] Figure 3 is a schematic diagram of needle release when the puncture stent provided by an embodiment of the present invention is in use;

[0022] Figure 4a is a schematic structural diagram of a puncture stent provided by an embodiment of the present invention;

[0023] Figure 4b is an exploded schematic diagram of a puncture stent provided by an embodiment of the present invention;

[0024] Figure 5a is a schematic structural diagram of the frame body of a puncture stent provided by an embodiment of the present invention;

[0025] Figure 5b is a schematic structural diagram of the frame body of a puncture stent from another perspective provided by an embodiment of the present invention;

[0026] Figure 6 is a partial enlarged view of the locking hook of a puncture stent provided by an embodiment of the present invention;

[0027] Figure 7a is a partial enlarged view of the hook of a puncture stent provided by an embodiment of the present invention;

[0028] Figure 7b is a partial enlarged view of the hook of a puncture stent from another perspective provided by an embodiment of the present invention;

[0029] Figure 8a is a schematic structural diagram of the buckle of a puncture stent provided by an embodiment of the present invention;

[0030] Figure 8b is a schematic structural diagram of the buckle of a puncture stent from another perspective provided by an embodiment of the present invention;

[0031] Figure 9 is a schematic structural diagram of the first needle insertion plate in the needle holder structure provided by an embodiment of the present invention;

[0032] Figure 10a is a schematic structural diagram of the first plate surface of the first needle insertion plate in the needle holder structure provided by an embodiment of the present invention;

[0033] Figure 10bIt is a schematic structural diagram of another perspective of the first surface of the first needle insertion plate in the needle holder structure provided by the embodiment of the present invention;

[0034] Figure 10c It is a schematic structural diagram of another perspective of the first surface of the first needle insertion plate in the needle holder structure provided by the embodiment of the present invention;

[0035] Figure 11a It is a schematic structural diagram of the slider in the needle holder structure provided by the embodiment of the present invention;

[0036] Figure 11b It is a schematic structural diagram of another perspective of the slider in the needle holder structure provided by the embodiment of the present invention;

[0037] Figure 12a It is a schematic structural diagram of the rocker in the needle holder structure provided by the embodiment of the present invention;

[0038] Figure 12b It is a schematic structural diagram of another perspective of the rocker in the needle holder structure provided by the embodiment of the present invention;

[0039] Figure 13a It is a schematic structural diagram of the second needle insertion plate in the needle holder structure provided by the embodiment of the present invention;

[0040] Figure 13b It is a schematic structural diagram of another perspective of the second needle insertion plate in the needle holder structure provided by the embodiment of the present invention.

[0041] In the figure:

[0042] 1: Frame body; 2: Lock;

[0043] 11: Hoop; 12: Upper fixing plate; 13: Lower fixing plate; 14: Lock hook; 15: Hook assembly; 111: First positioning; 112: Second positioning; 121: Rotation hole; 131: Rotation groove; 141: Lock hook groove; 151: First baffle; 152: Bottom plate; 153: Second baffle; 1511: Fixed groove; 1531: Fourth notch; 1521: Convex table surface;

[0044] 21: Elastic wall; 22: Lock post; 23: Hand position; 24: Fixed post; 211: Rectangular hole; 241: Upper rotation pin; 242: Lower rotation pin; 231: Second anti-slip rib;

[0045] 31: First needle - inserting plate; 32: Slide block; 33: Rocker; 34: Needle slot; 311: Needle - inserting wall; 312: Slide rail; 313: Elastic catch; 314: Connecting wall; 3111: Rotating boss; 3112: First stop wall; 3113: First notch; 3114: Second stop wall; 3115: First chute; 31111: Elastic column; 311112: Buckle; 3121: Second positioning point; 3122: First chute; 3123: First positioning point; 3141: Second notch; 3142: Stop block; 3143: Hanging shaft; 3116: Third notch; 321: Slide - block wall; 3211: Protruding shaft; 3212: Vertical wall; 32121: Bayonet; 32122: Inclined opening; 331: Rocker arm; 332: Rocking block; 333: Positioning block; 3322: Boss; 3321: First anti - slip rib; 3311: Fixed hole; 3312: Third chute; 3323: First positioning groove; 3324: Positioning catch; 3325: Second positioning groove;

[0046] 41: Second needle - inserting plate; 42: Clamping plate; 43: Hand - position wall; 44: Locking block; 411: Needle - inserting channel; 412: Inlet; 413: Outlet; 414: Specification label; 421: Positioning hole; 422: Third anti - slip rib. Detailed implementation mode

[0047] Figure 1 is an assembly schematic diagram of the puncture bracket and the ultrasonic probe provided by the implementation mode of the present invention; Figure 2 is a needle - inserting schematic diagram when the puncture bracket provided by the implementation mode of the present invention is in use; Figure 3 is a needle - releasing schematic diagram when the puncture bracket provided by the implementation mode of the present invention is in use. As Figure 1 shown, before performing a puncture operation, it is necessary to connect the puncture bracket 100 and the ultrasonic probe 200 to form an integral body, and the needle - exiting end of the puncture bracket 100 and the detection end of the ultrasonic probe 200 are on the same side. As Figure 2 shown, when performing a needle - inserting operation, the puncture needle 300 selects a corresponding inlet (i.e., selects the needle - inserting angle), and then penetrates into the patient's body along the needle - inserting channel. As Figure 3 shown, when a needle - releasing operation is required, the puncture bracket 100 is disassembled to release the puncture needle 300.

[0048] Figure 4a is a structural schematic diagram of the puncture bracket provided by the implementation mode of the present invention; Figure 4b is an exploded schematic diagram of the puncture bracket provided by the implementation mode of the present invention. As Figure 4a and 4b shown, the puncture bracket includes a frame body 1, a lock 2, a first needle - inserting plate 3 and a second needle - inserting plate 4.

[0049] Figure 5aIt is a schematic structural view of the frame body of the puncture bracket provided by the embodiment of the present invention; Figure 5b It is a schematic structural view of another perspective of the frame body of the puncture bracket provided by the embodiment of the present invention. As Figure 5a and Figure 5b shown, the frame body 1 includes a hoop 11, an upper fixing plate 12, a lower fixing plate 13, a locking hook 14 and a hanging hook 15. Among them, the hoop 11 has a certain elastic deformation ability and can be opened from the notch under the action of an external force, and then installed on the ultrasonic probe. After the external force is removed, it can recover its deformation and fit on the surface of the ultrasonic probe. By cooperating with the corresponding positioning points provided on the ultrasonic probe through the first positioning 111 and the second positioning 112 provided on both sides of the hoop 11, the frame body 1 is firmly attached to the surface of the ultrasonic probe. The upper fixing plate 12, the lower fixing plate 13 and the locking hook 14 are fixedly connected to the same side of the hoop 11, and the hanging hook 15 is connected to the other side of the hoop 11.

[0050] Figure 6 It is a partial enlarged view of the locking hook of the puncture bracket provided by the embodiment of the present invention. As Figure 5a , Figure 5b and Figure 6 shown, a circular rotation hole 121 is provided on the upper fixing plate 12, a rotation groove 131 with an opening is provided on the lower fixing plate 13, and a locking hook groove 141 is provided at the part where the locking hook 14 is connected to the frame body.

[0051] Figure 7a It is a partial enlarged view of the hanging hook of the puncture bracket provided by the embodiment of the present invention; Figure 7b It is a partial enlarged view of another perspective of the hanging hook of the puncture bracket provided by the embodiment of the present invention. As Figure 7a and Figure 7b shown, the hanging hook 15 includes a bottom plate 152 and a first baffle 151 and a second baffle 153 fixedly connected to both sides of the bottom plate 152. Fixed slots 1511 are respectively provided at the tops of the first baffle 151 and the second baffle 153. A fourth notch 1531 is also provided on the second baffle 153, and a convex table surface 1521 is provided below the bottom plate 152.

[0052] Figure 8a It is a schematic structural view of the lock of the puncture bracket provided by the embodiment of the present invention; Figure 8b It is a schematic structural view of another perspective of the lock of the puncture bracket provided by the embodiment of the present invention. As Figure 8a and Figure 8bAs shown in the figure, the buckle 2 is integrally formed by fixedly connecting a buckle post 22 and a fixing post 24 through an elastic wall 21. The elastic wall 21 is an arc-shaped structure with a certain elastic deformation ability. A hand position 23 is provided on the fixing post 22, and a plurality of second anti-slip ribs 231 are provided on the hand position 23. Upper and lower rotating pins 241 and 242 are provided at both ends of the fixing post 24. The upper rotating pin 241 can be inserted into the rotating hole 121 of the upper fixing plate 12 provided on the frame body 1. At the same time, the lower rotating pin 242 can be inserted into the rotating groove 131 of the lower fixing plate 13 provided on the frame body 1 to realize the movable connection between the buckle 2 and the frame body 1, and the buckle 2 can rotate a certain angle around the axis position of the rotating hole 121. When the buckle 2 rotates to make the fixing post 22 buckle into the locking groove 141 of the locking hook 14 provided on the frame body 1, the elastic wall 21 provided on the buckle 2 has the elastic deformation ability to tighten the retaining hoop 11 against the surface of the ultrasonic probe, thereby realizing the stable connection between the frame body 1 and the ultrasonic probe.

[0053] Figure 9 It is a schematic structural diagram of the first needle insertion plate in the needle holder structure provided by an embodiment of the present invention. As Figure 9 shown, the needle holder structure includes a first needle insertion plate 31, a slider 32, and a rocker 33.

[0054] Figure 10a It is a schematic structural diagram of the first surface of the first needle insertion plate in the needle holder structure provided by an embodiment of the present invention; Figure 10b It is a schematic structural diagram of the first surface of the first needle insertion plate in the needle holder structure provided by an embodiment of the present invention from another perspective; Figure 10c It is a schematic structural diagram of the first surface of the first needle insertion plate in the needle holder structure provided by an embodiment of the present invention from another perspective. As Figures 10a to 10c shown, the first needle insertion plate 31 is composed of a needle insertion wall 311, a slide rail 312 fixedly connected to the lower end of the needle insertion wall 311, and a connecting wall 314 fixedly connected to the side of the needle insertion wall 311. An elastic catch 313 is fixedly connected to the end of the slide rail 312, and the root of the elastic catch 313 has a certain elastic deformation ability. A first chute 3122 is provided inside the slide rail 312, and first positioning points 3123 and second positioning points 3121 are provided on both sides of the first chute 3122. As Figure 10b shown, a label is also provided on the end face of the arc-shaped end of the first needle insertion plate 31. If the label shows numbers 1, 2, 3, 4, 5, when the first needle insertion plate 31 is connected to the second needle insertion plate 41, the label is located on one side of the inlet 412 of the needle insertion channel 411 and serves as an identifier for the needle insertion channel 411.

[0055] The needle insertion wall 311 is provided with a rotating boss 3111, which is fixedly connected to the needle insertion wall 311. A third notch 3116 is provided in the middle of the rotating boss 3111. The third notch 3116 divides the rotating boss 3111 into two parts. The separated rotating boss 3111 includes an elastic column 31111 and a buckle 31112 provided at the end of the elastic column 31111. The edge of the needle insertion wall 311 is further provided with a first retaining wall 3112 and a second retaining wall 3114, and a first notch 3113 is provided between the first retaining wall 3112 and the second retaining wall 3114.

[0056] One end of the connecting wall 314 is provided with a hanging shaft 3143. The side of the connecting wall 314 is further provided with a second notch 3141 and a stop block 3142. The connecting wall 314 is fixedly connected to the needle insertion wall 311 at both ends, so a hollow second chute 3115 is formed in the middle.

[0057] Figure 11a It is a schematic structural diagram of the slider in the needle holder structure provided by the embodiment of the present invention; Figure 11b It is a schematic structural diagram of the slider in the needle holder structure provided by the embodiment of the present invention from another perspective. As Figure 11a and Figure 11b shown, the slider 32 includes a slider wall 321 and a vertical wall 3212 provided on the slider wall 321. A protruding shaft 3211 is further provided on the slider wall 321. The slider wall 321 and the protruding shaft 3211 are fixedly connected. The protruding shaft 3211 is a cylindrical structure. A buckle 32121 is provided on the vertical wall 3212, and an inclined mouth 32122 is provided at the end of the buckle 32121.

[0058] Figure 12a It is a schematic structural diagram of the rocker in the needle holder structure provided by the embodiment of the present invention; Figure 12b It is a schematic structural diagram of the rocker in the needle holder structure provided by the embodiment of the present invention from another perspective. As Figure 12a and Figure 12b shown, the rocker 33 includes a rocker arm 331 and a rocker block 332. A positioning block 333 is further provided on the side of the rocker arm 331. The positioning block 333 is fixedly connected to the rocker arm 331 as a whole. A circular fixing hole 3311 is provided at one end of one side of the rocker arm 331. A plurality of first anti-slip ribs 3321 are provided on the upper surface of the rocker block 332, and a protruding boss 3322 is provided at the end of the rocker block 332. A positioning hook 3324 is provided on the back side of the rocker block 332, and a first positioning groove 3323 and a second positioning groove 3325 are respectively provided on both sides of the positioning hook 3324.

[0059] Figure 13a It is a schematic structural diagram of the second needle insertion plate in the needle holder structure provided by the embodiment of the present invention; Figure 13bIt is a schematic structural diagram of another perspective of the second needle insertion plate in the needle holder structure provided by the embodiment of the present invention. As Figure 13a and Figure 13b shown, the second needle insertion plate 41 is fixedly connected to the buckle plate 42 and the hand position wall 43. A lock block 44 is also provided on the second needle insertion plate 41, and the lock block 44 is fixedly connected to the second needle insertion plate 41. The buckle plate 42 is provided with a third anti-slip rib 422, and the third anti-slip rib 422 can prevent slipping when the second needle insertion plate 41 is taken. The upper surface of the second needle insertion plate 41 is provided with a specification label 414, which can clearly display the specification size of the puncture needle or biopsy needle that the second needle insertion plate 41 can be adapted to. A plurality of semi-open needle insertion channels 411 are provided on the lower surface of the second needle insertion plate 41. The needle insertion channels 411 can be set to different specification sizes to adapt to the passage of puncture needles of different specifications. A guide inlet 412 is provided at the end of the needle insertion channel 411, which can facilitate the doctor to quickly insert the puncture needle into the needle insertion channel 411. The size of the needle insertion channel 411 corresponds to the specification label 414 one by one. Therefore, the second needle insertion plate 41 will have multiple models of different specifications.

[0060] In the embodiment of the present invention, the first clamping portion and the second clamping portion include two clamping forms. One is the clamping connection between the positioning block 333 and the positioning hole 421, and the other is the clamping connection between the vertical wall 3212 and the lock block 44. Among them, by swinging the rocker 33, the connection or separation of the two clamping methods can be realized simultaneously.

[0061] In the embodiment of the present invention, the assembly connection between the above-mentioned various components is as follows:

[0062] The slider 32 can pass through the second notch 3141 provided on the first needle insertion plate 31 and then enter the second chute 3115. The slider 32 can slide back and forth along the length direction of the chute 3115 in the second chute 3115, and the stop block 3142 can prevent the slider 32 from falling out of the second chute 3115 when sliding in the second chute 3115.

[0063] The fixing hole 3311 on the rocker 33 can be sleeved into the rotating boss 3111 provided on the first needle insertion plate 31 under the pressing of an external force. When pressed in, the elastic column 31111 will deform towards the third notch 3116, so as to smoothly press the rotating boss 3111 into the fixing hole 3311. After pressing in place, the elastic column 31111 returns to its original position, and the buckle 31112 fixedly connects the fixing hole 3311 of the rocker 33 to the first needle insertion plate 31. The rocker block 332 of the rocker 33 is then snapped into the first chute 3122 provided on the first needle insertion plate 31. At this time, both ends of the rocker 33 are movably connected to the first needle insertion plate 31, and the rocker 33 can rotate around the axis of the rotating boss 3111.

[0064] After the slider 32 is installed in the second chute 3115 provided on the first needle insertion plate 31, the protruding shaft 3211 provided on the slider 32 can be inserted into the third chute 3312 provided on the rocker 33. The protruding shaft 3211 can slide in the third chute 3312. When the rocker 33 rotates and swings on the first needle insertion plate 31, the protruding shaft 3211 is driven to slide in the third chute 3312 through the third chute 3312, so that the slider 32 can be driven to move a certain distance along the length direction of the second chute 3115 in the second chute 3115 provided on the first needle insertion plate 31.

[0065] The assembled first needle insertion plate 31 is assembled with the fixing groove 1511 provided on the frame 1 through the hanging shaft 3143 provided on the first needle insertion plate 31. After the circular hanging shaft 3143 is assembled into the fixing groove 1511, it can rotate to a certain extent around the fixing groove 1511. Rotate the first needle insertion plate 31 so that the connecting wall 314 provided on the first needle insertion plate 31 fits against the bottom plate 152 of the frame 1, so that the elastic hook 313 is deformed and buckled on the convex table surface 1521 provided on the frame 1, so that the first needle insertion plate 31 is firmly installed on the frame 1.

[0066] When the first needle insertion plate 31 and the second needle insertion plate 41 are connected, the buckle plate 42 is inserted into the first notch 3113 provided on the first needle insertion plate 31, so that the second needle insertion plate 41 and the first needle insertion plate 31 are attached, so that the semi-open needle insertion channel 411 forms a closed needle insertion channel. The first stop wall 3112, the second stop wall 3114 and the connecting wall 314 provided on the first needle insertion plate 31 can position the position of the second needle insertion plate 41, so that the second needle insertion plate 41 will not move relative to the first needle insertion plate 31 after being inserted into the first needle insertion plate 31.

[0067] After the connection between the first needle insertion plate 31 and the second needle insertion plate 41 is completed, the rocker 33 is swung in the direction of the first positioning point 3123 provided on the first needle insertion plate 31. When the second positioning groove 3325 provided on the rocker 33 falls into the first positioning point 3123 provided on the first needle insertion plate 31, the positioning block 333 provided on the rocker 33 is inserted into the positioning hole 421 provided in the second needle insertion plate 41; at the same time, when the rocker 33 is swung, the rocker 33 will drive the slider 32 to move, so that the bayonet 32121 provided on the slider 32 is smoothly snapped into the locking block 44 provided on the second needle insertion plate 41, so as to firmly lock the two side ends of the second needle insertion plate 41 on the first needle insertion plate 31. At this time, the semi-open needle insertion channel 411 provided on the second needle insertion plate 41 fits with the first needle insertion plate 31 to form a closed needle insertion channel, and a puncture needle or biopsy needle of the corresponding specification can be passed through. In this state, the above-mentioned components are in the first position, that is, the current positions of the positioning block 333, the slider 32, the vertical arm 32121, etc. are their first positions.

[0068] Similarly, when the reverse push rocker 33 swings towards the second positioning point 3121 provided on the first needle insertion plate 31, the rocker 33 will drive the positioning block 333 away from the positioning hole 421 provided in the second needle insertion plate 41. At the same time, the rocker 33 also drives the slider 32 to move, so that the bayonet 32121 provided on the slider 32 leaves the locking block 44 provided on the second needle insertion plate 41. When the first positioning groove 3323 provided on the rocker 33 falls into the second positioning point 3121 provided on the first needle insertion plate 31, the second needle insertion plate 41 can be translated away by pinching the hand position wall 43 provided on the second needle insertion plate 41, thereby realizing the function of separating the needle and the puncture bracket. In this state, the above-mentioned components are in the second position, that is, the positioning block 333, the slider 32, the vertical arm 32121, etc. move in the opposite direction as the rocker 33 swings, moving from the first position of the component to the second position.

[0069] The above specific embodiments do not constitute a limitation on the protection scope of the present 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 principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A needle holder structure, characterized in that, It includes an angle control plate (3), a needle slot plate (4) and a locking device; The needle slot plate (4) includes a plurality of semi-open needle insertion channels (411). When the angle control plate (3) and the needle slot plate (4) are fitted together, a closed needle insertion channel is formed. The needle insertion channels (411) can be set to different specifications and sizes. The first end of the needle insertion channel (411) is the guide inlet (412) of the needle body, and the second end is the guide outlet (413) of the needle body. The end where the guide inlet (412) is located is the needle insertion end of the angle control plate (3) and the needle slot plate (4); The locking device includes a first clamping portion and a second clamping portion. The first clamping portion is rotatably connected to the angle control plate (3), and the second clamping portion is fixedly connected to the needle slot plate (4); wherein, the first clamping portion includes a driving hand position, and the driving hand position is located at the needle insertion end of the angle control plate (3). By pulling the driving hand position, the first clamping portion can move between a first position and a second position, so as to realize the clamping and separation of the first clamping portion and the second clamping portion; The angle control plate (3) includes a first needle insertion plate (31), and the first needle insertion plate (31) is a sector plate, including an arc end and a center end; The first clamping portion includes a rocker (33). The rocker (33) includes a rocker arm (331). The first end of the rocker arm (331) is rotatably connected to the first needle insertion plate (31), and the second end is provided with a driving hand position; the driving hand position includes a rocker block (332). The rocker block (332) is fixedly connected to the second end of the rocker arm (331). On the side of the rocker block (332) that fits with the second plate surface of the first needle insertion plate (31), there is a clamping interface, and a positioning hook (3324) is provided on the inner wall at the top of the clamping interface; along the arc surface of the arc end of the first needle insertion plate (31), there is a first chute (3122), and the positioning hook (3324) is clamped in the first chute (3122); the rocker block (332) slides in the first chute (3122), so that the first clamping portion can move between a first position and a second position.

2. The needle holder structure according to claim 1, wherein At the needle insertion end of the needle slot plate (4), there is a hand position arm (43), and the hand position arm (43) is perpendicular to the plate surface of the needle slot plate (4).

3. The needle holder structure according to claim 2, wherein The first plate surface of the first needle insertion plate (31) is the needle insertion wall (311); The needle slot plate (4) includes a second needle insertion plate (41). The needle insertion channels (411) are arranged on the first plate surface of the second needle insertion plate (41). The hand position arm (43) is perpendicular to the second plate surface of the second needle insertion plate (41). The needle insertion wall (311) and the first plate surface of the second needle insertion plate (41) are fitted together to form a closed needle insertion channel; The second needle insertion plate (41) is a sector plate, including an arc end and a center end. The needle insertion ends of the angle control plate (3) and the needle slot plate (4) are the arc ends of the first needle insertion plate (31) and the second needle insertion plate (41).

4. The needle holder structure according to claim 1, wherein On both sides of the positioning hook (3324), there are respectively a first positioning groove (3323) and a second positioning groove (3325); At both ends of the first chute (3122), there are respectively a first positioning bump (3123) and a second positioning bump (3121); When the rocker arm (331) is in the first position, the first positioning groove (3323) is engaged with the first positioning bump (3123). When the rocker arm (331) is in the second position, the second positioning groove (3325) is engaged with the second positioning bump (3121).

5. The needle holder structure according to claim 4, wherein, On one side of the swing block (332) away from the second plate surface of the first needle insertion plate (31), there are a boss (3322) and a first anti-slip rib (3321).

6. The needle holder structure according to claim 3, characterized in that, The arc-shaped end of the first needle insertion plate (31) is provided with a plurality of labels. The labels are located on the end surface of the arc-shaped end of the first needle insertion plate (31) and on one side of the lead-in port (412).

7. The needle holder structure according to claim 1, wherein The first end of the rocker arm (331) is provided with a fixing hole (3311). On the second plate surface of the first needle insertion plate (31), there is a rotating boss (3111). The fixing hole (3311) is sleeved with the rotating boss (3111). A protruding positioning block (333) is provided on the first side edge of the rocker arm (331). The rocker arm (331) drives the positioning block (333) to move with the rotating boss (3111) as the center of the circle. The second engaging portion includes a buckle plate (42). The buckle plate (42) is arranged at the first side end of the second needle insertion plate (41). The buckle plate (42) is perpendicular to the plane where the second needle insertion plate (41) is located, and a positioning hole (421) is provided on the buckle plate (42). When the positioning block (333) is in the first position, the positioning block (333) and the buckle plate (42) are on the same side of the first needle insertion plate (31) and the second needle insertion plate (41), and the positioning block (333) is engaged in the positioning hole (421).

8. The needle holder structure according to claim 7, wherein, On the first side end of the first needle insertion plate (31), there are a first stop wall (3112) and a second stop wall (3114) extending in a direction away from the first needle insertion plate (31) along the plane where the first needle insertion plate (31) is located. There is a gap between the first stop wall (3112) and the second stop wall (3114) to form a first notch (3113). When the needle insertion wall (311) of the first needle insertion plate (31) is attached to the first plate surface of the second needle insertion plate (41), the buckle plate (42) is inserted into the first notch (3113) and abuts against the first stop wall (3112) and the second stop wall (3114).

9. The needle holder structure according to claim 8, characterized in that, The first needle insertion plate (31) further includes a connecting arm (314). The connecting arm (314) is located on one side of the second side end of the first needle insertion plate (31). The plane where the first needle insertion plate (31) is located is perpendicular to the surface of the connecting arm (314). There is a gap between the surface of the connecting arm (314) and the first needle insertion plate (31) to form a second chute (3115). The top and bottom ends of the connecting arm (314) are fixedly connected to the extension parts of the second side end of the first needle insertion plate (31). The first clamping portion further includes a slider (32). The slider (32) includes a slider arm (321). A vertical arm (3212) is perpendicularly provided on the first plate surface of the slider arm (321). The vertical arm (3212) is located in the second chute (3115). A protruding shaft (3211) is perpendicularly provided on the second plate surface of the slider arm (321). A strip-shaped third chute (3312) is provided on the side of the rocker arm (331) that fits against the second plate surface of the first needle insertion plate (31). The protruding shaft (3211) is provided in the third chute (3312). When the rocker arm (331) swings, the third chute (3312) drives the protruding shaft (3211) to move, so that the vertical arm (3212) moves between a first position and a second position in the second chute (3115). The second clamping portion further includes a latch block (44). The latch block (44) is provided at the second side end of the second needle insertion plate (41). The latch block (44) and the second needle insertion plate (41) are in the same plane. A bayonet (32121) is provided on the surface of the vertical arm (3212). The needle insertion wall (311) fits against the first plate surface of the second needle insertion plate (41). When the vertical arm (3212) moves to the first position, the bayonet (32121) is clamped with the latch block (44).

10. A puncture stent, characterized in that, It includes an annular frame body, and the outer wall of the frame body is connected with the needle frame structure according to any one of claims 1 to 9. The planes where the angle control plate (3) and the needle slot plate (4) are located are parallel to the axis of the frame body.

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