Rotary biopsy forceps with needle

Abstract

A sliding ring comprises a sliding block and a sliding sleeve, the sliding block is inserted into a sliding hole, the near end of a steel wire is fixedly connected with the sliding block, and the sliding sleeve is arranged on the outer side of a core rod in a sleeving mode. Elastic walls are arranged on the two sides of the sliding block, limiting grooves are formed in the two ends of the sliding sleeve, limiting blocks matched with the limiting grooves for limiting are arranged at the ends, opposite to the elastic walls, of the sliding block in a protruding mode, and buckles matched with the limiting grooves for limiting are arranged at the tail ends of the elastic walls in a protruding mode; the limiting pipe is arranged in the core rod, can rotate relative to the core rod, and is limited by the core rod in the moving direction of the steel wire; the near end of the outer tube is fixedly connected with the limiting tube, and the far end of the outer tube is rotatably connected with the forceps head assembly. When a user uses the sampling spoon, one hand pulls the steel wire by controlling the finger ring and the sliding ring to achieve the effect of opening and closing the sampling spoon, the other hand can directly rotate the core rod, so that the steel wire can rotate relative to the finger ring and the outer tube to drive the tong head assembly to rotate, gestures do not need to be replaced in the process, operation is convenient, and sampling is efficient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, especially to a needle rotating biopsy forceps. BACKGROUND

[0002] As an auxiliary diagnostic method, endoscopy is used more and more widely in clinical medical examination. Biopsy forceps can be inserted into the patient's body through the endoscope channel to check and clamp the diseased tissue.

[0003] A biopsy forceps is disclosed in a Chinese utility model patent with publication number CN220275637U, which comprises a forceps head assembly, a spring tube, an operating assembly and a rotating assembly. The forceps head assembly comprises a forceps head. One end of the spring tube is in abutment with the forceps head assembly, and the other end of the spring tube is connected with the operating assembly. The forceps head assembly can rotate relative to the spring tube. The operating assembly comprises a control wire, which can operate the opening and closing of the forceps head. The rotating assembly comprises a catheter, which passes through the spring tube and is fixedly connected with the forceps head. The control wire passes through the catheter to operate the opening and closing of the forceps head. In the operation process of the biopsy forceps, the angle of the forceps head of the forceps head assembly can be adjusted by rotating the catheter to approach the diseased tissue from different angles. The control wire can control the opening and closing of the forceps head of the forceps head assembly by operating the operating assembly to clamp the diseased tissue. Compared with the prior art, the angle of the forceps head is adjusted by rotating the catheter, which is easier to operate, faster and more accurate, thereby alleviating the problem of delay in adjusting the angle of the forceps head of the biopsy forceps.

[0004] In the above technical solution, according to the description in paragraphs 0059-0061 of the specification, the doctor needs to control the operating handle and rotate the knob during operation, which is inconvenient to operate. At the same time, the angle of the forceps head is adjusted by rotating the catheter and the knob, which has a complex gear transmission structure, high manufacturing cost, low internal gear transmission response, and slow adjustment angle.

[0005] In addition, the biopsy forceps has the problems of inconvenient disassembly and assembly and low connection reliability between parts. UTILITY MODEL CONTENTS

[0006] To solve the above problems, the purpose of the utility model is to provide a needle rotating biopsy forceps, which has the characteristics of convenient operation, efficient sampling, simple production, low cost, and convenient disassembly and assembly.

[0007] To achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A needle-bearing rotary biopsy forceps comprises a handle assembly, a connecting assembly and a forceps head assembly, the handle assembly comprises a finger ring, a core rod and a sliding ring, the finger ring is rotatably installed at the proximal end of the core rod, and the sliding ring is slidably arranged on the core rod through a sliding hole on the core rod; the connecting assembly comprises an outer tube and a steel wire, the proximal end of the steel wire extends into the sliding hole of the core rod and is fixedly connected with the sliding ring, and the distal end of the steel wire is connected with the forceps head assembly; the forceps head assembly comprises a connecting rod and a sampling spoon; characterized in that:

[0009] The sliding ring comprises a sliding block and a sliding sleeve, the sliding block is inserted into the sliding hole, the proximal end of the steel wire is fixedly connected with the sliding block, and the sliding sleeve is sleeved on the outside of the core rod; the two sides of the sliding block are provided with elastic walls, the two ends of the sliding sleeve are provided with limiting grooves, one end of the sliding block opposite to the elastic walls is provided with a limiting block protruding outward and limiting the limiting grooves, and the terminal end of the elastic wall is provided with a buckle protruding outward and limiting the limiting grooves;

[0010] The connecting assembly further comprises a limiting tube, the limiting tube is arranged in the core rod and can rotate relative to the core rod, and the limiting tube is limited by the core rod in the moving direction of the steel wire; the steel wire is arranged in the limiting tube and the outer tube, the proximal end of the outer tube is fixedly connected with the limiting tube, and the distal end of the outer tube is rotatably connected with the forceps head assembly;

[0011] The sliding ring can slide on the core rod under the action of external force to drive the steel wire to move forward and backward, the steel wire drives the two sampling spoons to make opening and closing movements through the two connecting rods, and meanwhile, the core rod can rotate relative to the finger ring and the outer tube under the action of external force to drive the steel wire and the forceps head assembly to rotate.

[0012] Preferably, the two sides of the sliding block protrude out of the sliding hole, the sliding sleeve is provided with first clamping grooves matched with the two sides of the sliding block, and the sliding sleeve and the sliding block are not rotatable relative to each other; or the two sides of the sliding block are in the sliding hole, and the sliding sleeve and the sliding block are rotatable relative to each other.

[0013] Preferably, the inside of the sliding block is provided with an L-shaped fixed groove, and the proximal end of the steel wire is fixedly installed in the L-shaped fixed groove.

[0014] Preferably, the sliding block comprises two spliced blocks, one of the spliced blocks is provided with a clamping block and a first splicing groove, and the other of the spliced blocks is provided with a second clamping groove and a second splicing groove; the clamping block and the second clamping groove are matched and clamped, and the first splicing groove and the second splicing groove are spliced to form the L-shaped fixed groove.

[0015] Preferably, the outer tube comprises a spring tube and a connecting sleeve, the proximal end of the spring tube is welded and fixed with the limiting tube, the distal end of the spring tube extends into the connecting sleeve and is welded and fixed, and the distal end of the connecting sleeve is rotatably connected with the forceps head assembly.

[0016] Preferably, the forceps head assembly further comprises a support, a T-shaped sleeve and a sheet needle assembly, the distal end of the connecting sleeve is rotatably connected with the proximal end of the T-shaped sleeve, and the proximal end of the support is press-fitted and fixed with the distal end of the T-shaped sleeve.

[0017] The mounting port is formed on the support; two connecting rods are arranged in the mounting port, and one end of the two connecting rods is hingedly connected through a connecting pin, the distal end of the steel wire is fixedly connected with the connecting pin, and the other end of the two connecting rods is respectively hingedly connected with the two sampling spoons through pin shafts;

[0018] The sheet needle assembly comprises a sheet needle and a connecting shaft penetrating the sheet needle, and the connecting shaft is fixedly welded with the sheet needle; the connecting shaft is arranged in the C-shaped opening on the two sides of the distal end of the support, and the connecting shaft is fixedly welded with the support; the middle portions of the two sampling spoons are hingedly connected through the connecting shaft, and the sheet needle is located between the two sampling spoons.

[0019] As preferred, the jaw assembly further comprises a push-pull rod penetrating the connecting sleeve and the T-shaped sleeve, the push-pull rod comprises a fixed rod and a connecting sheet fixedly connected with each other, the distal end of the steel wire is inserted into the push-pull rod and fixedly welded, and the connecting sheet is sleeved on the connecting pin.

[0020] As preferred, the sampling spoon comprises a connecting handle and a spoon body, the spoon body is provided with a cutting edge for shearing, the connecting handle is provided with a first connecting hole matched with the connecting shaft, the connecting handle is inserted into the mounting port and rotatably connected with the connecting shaft; the connecting rod is fixedly connected with the pin shaft or integrally formed, the connecting handle is further provided with a second connecting hole matched with the pin shaft, one of the connecting rods is fixedly connected with or integrally formed with the connecting pin, and the other connecting rod is provided with a third connecting hole matched with the connecting pin.

[0021] As preferred, the handle assembly further comprises a fixing sleeve, the distal end side wall of the core rod is provided with an opening communicated with the sliding hole, the connecting assembly is embedded in the opening, and the fixing sleeve is sleeved on the distal end of the core rod and covers the opening.

[0022] As preferred, the opening is provided with an assembly opening matched with the limiting tube.

[0023] The utility model discloses the above-mentioned technical scheme has the following beneficial effects:

[0024] ①When the user uses the needle rotary biopsy forceps in the application, one hand can pull the steel wire to achieve the opening and closing effect of the sampling spoon by controlling the finger ring and the sliding ring, and the other hand can directly rotate the core rod to make the steel wire rotate relative to the finger ring and the outer tube to drive the jaw assembly to rotate to achieve the rotating effect of the sampling spoon, without changing gestures in the middle, convenient operation and efficient sampling.

[0025] ②The sliding block is assembled by two splicing blocks and is assembled with the sliding sleeve, and elastic walls are arranged on the two sides of the sliding block, so that the whole sliding ring is very convenient to disassemble and assemble.

[0026] ③An L-shaped fixing groove is arranged in the sliding block, the L-shaped fixing groove can be spliced, the steel wire is bent and inserted into the splicing block, and the splicing block is closed to fix the steel wire, without a pushing tube and a positioning tube, which is very convenient and reduces the cost.

[0027] ④, the core rod side wall is provided with an opening, and a fitting port matched with the limiting tube is arranged on the opening, so that the installation of the connecting assembly is very convenient;

[0028] ⑤, the blade needle in the blade needle assembly is welded into an integral whole with the connecting shaft, and then is installed with the sampling spoon, and then is clamped into the C-shaped opening of the support through the connecting shaft, and then the connecting shaft is welded with the support, so that the installation is very convenient and time-saving and labor-saving.

[0029] ⑥, each part is easy to produce, which can reduce labor cost.

[0030] ⑦, the T-shaped sleeve and the support are connected through press fitting, which is convenient to disassemble and assemble, and the connection structure is more reliable.

[0031] ⑧, the cutting edges of the two sampling spoons overlap when sampling, which is easier to sample in a shearing manner and does not cause tearing phenomenon. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a schematic diagram of the three-dimensional structure of a needle rotary biopsy forceps.

[0033] Figure 2 It is a schematic diagram of the cross-sectional structure of a needle rotary biopsy forceps. Figure 1 It is an enlarged schematic diagram of the middle C.

[0034] Figure 3 It is a schematic diagram of the cross-sectional structure of a needle rotary biopsy forceps.

[0035] Figure 4 It is a schematic diagram of the cross-sectional structure of a needle rotary biopsy forceps. Figure 3 It is an enlarged schematic diagram of the middle B.

[0036] Figure 5 It is a schematic diagram of the cross-sectional structure of a needle rotary biopsy forceps.

[0037] Figure 6 It is an enlarged schematic diagram of the middle A. Figure 5

[0038] Figure 7 It is a schematic diagram of the opening arrangement on the core rod.

[0039] Figure 8 It is an enlarged schematic diagram of the middle D. Figure 7

[0040] It is a schematic diagram of the three-dimensional structure of the core rod. Figure 9

[0041] It is a schematic diagram of the three-dimensional structure of the slider. Figure 10

[0042] It is a schematic diagram of the three-dimensional structure of one of the splicing blocks. Figure 11 It is a schematic diagram of the three-dimensional structure of one of the splicing blocks.​

[0043] Figure 12 is a perspective view of another block.

[0044] Figure 13 is a perspective view of a slide.

[0045] Figure 14 is a perspective view of another slide.

[0046] Figure 15 is a perspective view of a sample spoon.

[0047] Figure 16 is a perspective view of a lancet assembly.

[0048] Figure 17 is a perspective view of a cradle.

[0049] Figure 18 is a perspective view of a push-pull rod.

[0050] Figure 19 is a perspective view of one of the links.

[0051] Figure 20 is a perspective view of another link.

[0052] Figure 21 is a perspective view of a T-shaped sleeve. DETAILED DESCRIPTION

[0053] Embodiments of the present application are described below by way of example with reference to the accompanying drawings. Identical or similar components are denoted throughout the figures by the same reference numerals, and the description of the same components is not repeated. The embodiments described below are examples and are intended to explain the present application, and are not intended to limit the present application.

[0054] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0058] like Figures 1-21 The illustrated rotary biopsy forceps with a needle includes a handle assembly, a connecting assembly, and a forceps head assembly. The handle assembly includes a finger ring 1, a core rod 2, and a sliding ring 3. The finger ring 1 is rotatably mounted on the proximal end of the core rod 2, and the sliding ring 3 is slidably disposed on the core rod 2 through a sliding hole 4. The connecting assembly includes an outer tube and a steel wire 5. The proximal end of the steel wire 5 extends into the sliding hole 4 of the core rod 2 and is fixedly connected to the sliding ring 3, while the distal end of the steel wire 5 is connected to the forceps head assembly. The forceps head assembly includes a connecting rod 6 and a sampling spoon 7. Its distinguishing feature is:

[0059] The slip ring 3 includes a slider 8 and a sliding sleeve 9. The slider 8 is inserted into the sliding hole 4. The proximal end of the steel wire 5 is fixedly connected to the slider 8. The sliding sleeve 9 is sleeved on the outside of the core rod 2. The slider 8 has elastic walls 40 on both sides. The sliding sleeve 9 has limiting grooves 10 at both ends. The slider 8 has a limiting block 11 that cooperates with the limiting groove 10 to limit the movement at one end relative to the elastic wall 40. The elastic wall 40 has a buckle 12 that cooperates with the limiting groove 10 to limit the movement at the end.

[0060] The connecting assembly further comprises a limiting tube 13 arranged in the core rod 2, the limiting tube 13 being rotatable relative to the core rod 2 and being limited by the core rod 2 in the moving direction of the steel wire 5; the steel wire 5 is arranged in the limiting tube 13 and the outer tube, the proximal end of the outer tube being fixedly connected with the limiting tube, and the distal end of the outer tube being rotatably connected with the pincer head assembly.

[0061] The sliding ring 3 can slide on the core rod 2 under the action of external force to drive the steel wire 5 to move forward and backward, and the steel wire 5 drives the two sample spoons 7 to open and close through the two connecting rods 6, and meanwhile, the core rod 2 can rotate relative to the ring 1 and the outer tube under the action of external force to drive the steel wire 5 and the pincer head assembly to rotate.

[0062] In the above technical solution, the ring is rotatable relative to the core rod, the outer tube is rotatable relative to the core rod through the limiting tube, the pincer head assembly is rotatable relative to the outer tube, and the two ends of the steel wire are fixed with the sliding ring and the pincer head assembly respectively, so that when the user uses the needle rotating biopsy forceps in the application, one hand can control the ring and the sliding ring to pull the steel wire to achieve the opening and closing effect of the sample spoon, and the other hand can directly rotate the core rod to make the steel wire rotate relative to the ring and the outer tube to drive the pincer head assembly to rotate to achieve the rotating effect of the sample spoon, without changing gestures in the middle, so that the operation is convenient and efficient.

[0063] As shown in Figure 5 and 14 , the two sides of the sliding block 8 extend out of the sliding hole 4, the sliding sleeve 9 is provided with a first clamping groove 41 matched with the two sides of the sliding block 8, and the sliding sleeve 9 is not rotatable relative to the sliding block 8, so that when the user rotates the core rod, the fingers acting on the sliding ring need to be slightly loosened, so that the sliding ring as a whole can rotate together with the core rod; or as shown in Figure 1 and 13 , the two sides of the sliding block 8 are in the sliding hole 4, and the sliding sleeve 9 is rotatable relative to the sliding block 8, so that when the user rotates the core rod, the fingers acting on the ring and the sliding ring do not need to be loosened, the core rod and the sliding block can rotate relative to the sliding sleeve, the core rod rotates more smoothly, and the rotation is more efficient.

[0064] As shown in Figure 6 , the inside of the sliding block 8 is provided with an L-shaped fixing groove 24, and the proximal end of the steel wire 5 is fixedly installed in the L-shaped fixing groove 24. In this technical solution, the steel wire is fixed in the L-shaped fixing groove after being bent, without a pushing tube and a limiting tube, reducing the cost and stabilizing the structure.

[0065] As shown in Figures 10-12As shown, the slider 8 includes two spliced blocks 25, one of which is provided with a clamping block 28 and a first splicing groove 26, and the other of which is provided with a second clamping groove 29 and a second splicing groove 27; the clamping block 28 and the second clamping groove 29 are matched and clamped, and the first splicing groove 26 and the second splicing groove 27 are spliced to form an L-shaped fixed groove 24. In this technical solution, the slider is assembled with the sleeve and the sliding hole after being spliced by two spliced blocks, and the L-shaped fixed groove can be spliced, the steel wire is bent and inserted into the spliced block, so that the installation of the steel wire is very convenient, and the two spliced blocks are folded to fix the steel wire, which is convenient to disassemble and assemble.

[0066] As shown in Figure 3 and Figures 8 As shown, the outer tube includes a spring tube 14 and a connecting sleeve 16, the proximal end of the spring tube 14 is welded and fixed with the limiting tube 13, the distal end of the spring tube 14 extends into the connecting sleeve 16 and is welded and fixed, and the distal end of the connecting sleeve 16 is rotatably connected with the jaw assembly. In this technical solution, the spring tube makes the steel wire more elastic and easy to bend, at the same time, the limiting tube is welded and fixed with the spring tube, the structure is stable, and the steel wire and the core rod can rotate relative to each other. The spring tube is welded into the connecting sleeve, and the structure is stable. It should be noted here that the spring tube is a metal tube, so the outer tube also includes a protective tube arranged outside the spring tube.

[0067] As shown in Figures 15-21 The jaw assembly further includes a bracket 15, a T-shaped sleeve 17 and a blade needle assembly; the distal end of the connecting sleeve 16 is rotatably connected with the proximal end of the T-shaped sleeve 17; the proximal end of the bracket 15 is press-fitted and fixed with the distal end of the T-shaped sleeve 17;

[0068] An installation opening 19 is formed in the bracket 15; two connecting rods 6 are arranged in the installation opening 19, and one end of each of the two connecting rods 6 is hingedly connected through a connecting pin 20, the distal end of the steel wire 5 is fixedly connected with the connecting pin 20, and the other end of each of the two connecting rods 6 is respectively hingedly connected with a sampling spoon 7 through a pin shaft 21;

[0069] The blade needle assembly includes a blade needle 22 and a connecting shaft 23 penetrating the blade needle 22, and the connecting shaft 23 is welded and fixed with the blade needle 22; the connecting shaft 23 is installed in the C-shaped opening 30 on the distal end of the bracket 15, and the connecting shaft 23 is welded and fixed with the bracket 15; the middle part of each of the two sampling spoons 7 is hingedly connected through the connecting shaft 23, and the blade needle 22 is located between the two sampling spoons 7.

[0070] In the above technical solution, the T-shaped sleeve and the bracket are connected by press-fitting, and the T-shaped sleeve is provided with a U-shaped opening 101, which is convenient to disassemble and assemble, and the connection structure is more reliable. The blade needle in the blade needle assembly is welded with the connecting shaft to form a whole, and then is installed with the sampling spoon, and then the connecting shaft is clamped into the C-shaped opening of the bracket, and the connecting shaft is welded with the bracket, which is very convenient to install and saves time and effort.

[0071] Further, the jaw assembly further comprises a push-pull rod 18, which is arranged in the connecting sleeve 16 and the T-shaped sleeve 17, the push-pull rod 18 comprises a fixed rod 42 and a connecting piece 43 fixedly connected with each other, the distal end of the steel wire 5 is inserted into the push-pull rod 18 and welded fixedly, and the connecting piece 43 is sleeved on the connecting pin 20. In the technical scheme, the steel wire can be directly fixed with the connecting pin, or can be fixed through the push-pull rod in the case, and the connecting piece and the connecting pin are sleeved, which is convenient to install and reliable in structure.

[0072] Further, the sampling spoon 7 comprises a connecting handle 31 and a spoon body 32, the spoon body 32 is provided with a cutting edge 33 for shearing, the connecting handle 31 is provided with a first connecting hole 34 matched with the connecting shaft 23, the connecting handle 31 is inserted into the installation opening 19 and rotatably connected with the connecting shaft 23; the connecting rods 6 are fixedly connected with the pin shaft 21 or integrally formed, the connecting handle 31 is further provided with a second connecting hole 35 matched with the pin shaft 21, one of the connecting rods 6 is fixedly connected with the connecting pin 20 or integrally formed, and the other connecting rod 6 is provided with a third connecting hole 36 matched with the connecting pin 20. In the technical scheme, the pin shaft is formed on the connecting rod, which is high in structural strength, and the pin shaft is wide inside and narrow outside, so that a position can be left on the connecting pin for fixing the steel wire; the connecting pin is formed on one of the connecting rods, which is convenient to install and reliable in structure; the cutting edges of the two sampling spoons overlap during sampling, and the sampling is easier through shearing, and the tearing phenomenon does not occur.

[0073] As shown in Figure 1 and 3 , the handle assembly further comprises a fixing sleeve 37, the distal end side wall of the core rod 2 is provided with an opening 38 communicated with the sliding hole 4, the connecting assembly is embedded in the opening 38, and the fixing sleeve 37 is sleeved on the distal end of the core rod 2 and covers the opening 38. In the technical scheme, the opening is provided at the distal end of the core rod, which facilitates the installation of the connecting assembly, is easy to deform, facilitates the installation of the fixing sleeve, and the fixing sleeve can prevent the connecting assembly from being detached.

[0074] As shown in Figure 8 and 9 , the opening 38 is cut and provided with a fitting opening 39 matched with the limiting tube 13. In the technical scheme, the fitting opening is provided, the limiting tube is easily inserted into the core rod, and a clamping groove is formed in the fitting opening for loading the limiting tube, so that the limiting tube cannot move back and forth but can rotate relative to the core rod.

[0075] In addition, Figure 9 , the top of the core rod is provided with a bifurcated buckle 100, when the ring is assembled, the clamping groove on the ring is pressed in, and the ring can rotate relative to the core rod, which is very convenient to install.

[0076] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0077] Although the embodiments of the present application have been shown and described above, it should be understood that the above-described embodiments are exemplary, and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application without departing from the principles and spirits of the present application.

Claims

1. A rotary biopsy forceps with a needle, comprising a handle assembly, a connecting assembly, and a forceps head assembly, wherein the handle assembly comprises a finger ring (1), a core rod (2), and a slip ring (3), the finger ring (1) being rotatably mounted on the proximal end of the core rod (2), and the slip ring (3) being slidably disposed on the core rod (2) through a sliding hole (4); the connecting assembly comprises an outer tube and a steel wire (5), the proximal end of the steel wire (5) extending into the sliding hole (4) of the core rod (2) and fixedly connected to the slip ring (3), and the distal end of the steel wire (5) being connected to the forceps head assembly; the forceps head assembly comprises a connecting rod (6) and a sampling spoon (7); characterized in that: The slip ring (3) includes a slider (8) and a sleeve (9). The slider (8) is inserted into the sliding hole (4). The near end of the steel wire (5) is fixedly connected to the slider (8). The sleeve (9) is sleeved on the outside of the core rod (2). The slider (8) has elastic walls (40) on both sides. The sleeve (9) has limiting grooves (10) at both ends. The slider (8) has a limiting block (11) that cooperates with the limiting groove (10) to limit the movement of one end of the slider (8) relative to the elastic wall (40). The elastic wall (40) has a buckle (12) that cooperates with the limiting groove (10) to limit the movement of the end of the elastic wall (40). The connecting assembly also includes a limiting tube (13), which is disposed inside the core rod (2). The limiting tube (13) can rotate relative to the core rod (2). The limiting tube (13) is limited by the core rod (2) in the direction of movement of the steel wire (5). The steel wire (5) passes through the limiting tube (13) and the outer tube. The proximal end of the outer tube is fixedly connected to the limiting tube, and the distal end of the outer tube is rotatably connected to the clamp head assembly. The slip ring (3) can slide on the core rod (2) under the action of external force, thereby driving the steel wire (5) to move back and forth. The steel wire (5) drives the two sampling spoons (7) to open and close through the two connecting rods (6). At the same time, the core rod (2) can rotate relative to the finger ring (1) and the outer tube under the action of external force, thereby driving the steel wire (5) and the pliers assembly to rotate.

2. The rotary biopsy forceps with needle according to claim 1, characterized in that: The slider (8) extends out of the sliding holes (4) on both sides. The sliding sleeve (9) is provided with a first slot (41) that cooperates with the two sides of the slider (8). The sliding sleeve (9) and the slider (8) cannot rotate relative to each other; or, the two sides of the slider (8) are located in the sliding holes (4), and the sliding sleeve (9) and the slider (8) can rotate relative to each other.

3. A rotary biopsy forceps with a needle according to claim 2, characterized in that: The slider (8) has an L-shaped fixing groove (24) inside, and the near end of the steel wire (5) is fixedly installed in the L-shaped fixing groove (24).

4. A rotary biopsy forceps with a needle according to claim 3, characterized in that: The slider (8) includes two splicing blocks (25) that are spliced ​​together. One splicing block (25) is provided with a locking block (28) and a first splicing groove (26), and the other splicing block (25) is provided with a second locking groove (29) and a second splicing groove (27). The locking block (28) and the second locking groove (29) are fitted together and the first splicing groove (26) and the second splicing groove (27) are spliced ​​together to form an L-shaped fixing groove (24).

5. A rotary biopsy forceps with a needle according to claim 1, characterized in that: The outer tube includes a spring tube (14) and a connecting sleeve (16). The proximal end of the spring tube (14) is welded and fixed to the limiting tube (13), and the distal end of the spring tube (14) extends into the connecting sleeve (16) and is welded and fixed. The distal end of the connecting sleeve (16) is rotatably connected to the pliers assembly.

6. A rotary biopsy forceps with a needle according to claim 1, characterized in that: The clamp assembly also includes a bracket (15), a T-shaped sleeve (17), and a pin assembly; the distal end of the connecting sleeve (16) is rotatably connected to the proximal end of the T-shaped sleeve (17); the proximal end of the bracket (15) is press-fitted to the distal end of the T-shaped sleeve (17); The bracket (15) has an installation port (19); two connecting rods (6) are set in the installation port (19), and one end of the two connecting rods (6) is hinged by a connecting pin (20), the far end of the steel wire (5) is fixedly connected to the connecting pin (20), and the other end of the two connecting rods (6) is hinged to two sampling spoons (7) respectively by a pin (21); The needle assembly includes a needle (22) and a connecting shaft (23) passing through the needle (22). The connecting shaft (23) is welded and fixed to the needle (22). The connecting shaft (23) is installed in the C-shaped openings (30) on both sides of the far end of the bracket (15). The connecting shaft (23) is welded and fixed to the bracket (15). The middle parts of the two sampling spoons (7) are hinged through the connecting shaft (23), and the needle (22) is located between the two sampling spoons (7).

7. A rotary biopsy forceps with a needle according to claim 6, characterized in that: The clamp assembly also includes a push-pull rod (18), which is inserted into the connecting sleeve (16) and the T-shaped sleeve (17). The push-pull rod (18) includes a fixed rod (42) and a connecting piece (43) that are fixedly connected to each other. The distal end of the steel wire (5) extends into the push-pull rod (18) and is welded and fixed. The connecting piece (43) is sleeved on the connecting pin (20).

8. A rotary biopsy forceps with a needle according to claim 6, characterized in that: The sampling spoon (7) includes a connecting handle (31) and a spoon body (32). The spoon body (32) is provided with a cutting edge (33) for cutting. The connecting handle (31) is provided with a first connecting hole (34) that cooperates with the connecting shaft (23). The connecting handle (31) extends into the mounting port (19) and is rotatably connected to the connecting shaft (23). The connecting rod (6) is fixedly connected to the pin (21) or integrally formed. The connecting handle (31) is also provided with a second connecting hole (35) that cooperates with the pin (21). One connecting rod (6) is fixedly connected to or integrally formed with a connecting pin (20), and the other connecting rod (6) is provided with a third connecting hole (36) that cooperates with the connecting pin (20).

9. A rotary biopsy forceps with a needle according to claim 1, characterized in that: The handle assembly also includes a fixing sleeve (37), and an opening (38) communicating with the sliding hole (4) is provided on the distal side wall of the core rod (2). The connecting assembly is embedded in the opening (38), and the fixing sleeve (37) is fitted on the distal end of the core rod (2) and covers the opening (38).

10. A rotary biopsy forceps with a needle according to claim 9, characterized in that: The opening (38) is provided with an assembly port (39) that mates with the limiting tube (13).

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