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 invention relates to the field of medical instruments, and in particular to a rotating biopsy forceps with a needle. Background Art

[0002] Endoscopic examination is an auxiliary diagnostic method that is increasingly used in clinical medical examinations. The biopsy forceps can be inserted into the patient's body through the endoscope channel to examine the lesion and clamp the lesion tissue.

[0003] For example, a Chinese utility model patent with the publication number CN220275637U discloses a biopsy forceps, including a clamp head assembly, a spring tube, an operating assembly and a rotating assembly, wherein the clamp head assembly includes a clamp head; one end of the spring tube abuts against the clamp head assembly, the other end of the spring tube is connected to the operating assembly, and the clamp head assembly can rotate relative to the spring tube; the operating assembly includes a control wire, and the control wire can operate the opening and closing of the clamp head; the catheter of the rotating assembly passes through the spring tube and is fixedly connected to the clamp head, and the control wire passes through the catheter to operate the opening and closing of the clamp head. During the operation of the biopsy forceps of the utility model, the angle of the clamp head of the clamp head assembly can be adjusted by rotating the catheter to approach the diseased tissue from different angles; by operating the operating assembly, the control wire can control the opening and closing of the clamp head of the clamp head assembly to clamp the diseased tissue. Compared with the prior art, the method of adjusting the angle of the clamp head by rotating the catheter is easier to operate, faster and more accurate, thereby alleviating the problem of delay in adjusting the angle of the clamp head of the biopsy forceps.

[0004] In the above technical solution, referring to paragraphs 0059 to 0061 of the specification, the doctor not only needs to control the operating handle but also needs to rotate the knob when operating, which is inconvenient. At the same time, the forceps head is adjusted by rotating the catheter and the knob, and the gear transmission structure is complex, the manufacturing cost is high, and the internal gear transmission has low responsiveness and slow adjustment of the angle.

[0005] In addition, the above-mentioned biopsy forceps have the problems of being inconvenient to disassemble and assemble, and having low connection reliability between parts. Summary of the invention

[0006] In order to solve the above problems, the object of the present invention is to provide a rotary biopsy forceps with a needle, which has the characteristics of easy operation, efficient sampling, simple production, low cost and easy disassembly and assembly.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: A needle-carrying rotating biopsy forceps comprises a handle assembly, a connecting assembly and a forceps head assembly, wherein the handle assembly comprises a finger ring, a core rod and a slip ring, wherein the finger ring is rotatably mounted on the proximal end of the core rod, and the slip 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, wherein the proximal end of the steel wire extends into the sliding hole of the core rod and is fixedly connected to the slip ring, and the distal end of the steel wire is connected to the forceps head assembly; the forceps head assembly comprises a connecting rod and a sampling spoon; the characteristics are as follows: The slip ring comprises a slider and a sliding sleeve, the slider is inserted in the sliding hole, the proximal end of the steel wire is fixedly connected to the slider, and the sliding sleeve is sleeved on the outside of the core rod; elastic walls are provided on both sides of the slider, and limiting grooves are provided at both ends of the sliding sleeve. A limiting block is protruded from one end of the slider relative to the elastic wall and is limited in position with the limiting groove, and a buckle is protruded from the end of the elastic wall and is limited in position with the limiting groove; The connection assembly also includes a limit tube, which is arranged in the core rod and can rotate relative to the core rod. The limit tube is limited by the core rod in the moving direction of the steel wire. The steel wire is passed through the limit tube and the outer tube. The proximal end of the outer tube is fixedly connected to the limit tube, and the distal end of the outer tube is rotatably connected to the clamp head assembly. The slip ring can slide on the core rod under the action of external force, thereby driving the steel wire to move forward and backward. The steel wire drives the two sampling spoons to open and close through two connecting rods. At the same time, the core rod can rotate relative to the finger ring and the outer tube under the action of external force, thereby driving the steel wire and the clamp head assembly to rotate.

[0008] Preferably, two sides of the slider extend out of the sliding hole, and the sliding sleeve is provided with grooves matching the two sides of the slider, and the sliding sleeve and the slider cannot rotate relative to each other; or, two sides of the slider are in the sliding hole, and the sliding sleeve and the slider can rotate relative to each other.

[0009] Preferably, an L-shaped fixing groove is provided inside the sliding block, and the proximal end of the steel wire is fixedly installed in the L-shaped fixing groove.

[0010] Preferably, the slider comprises two spliced ​​blocks, one of which is provided with a card block and a first splicing groove, and the other is provided with a card slot and a second splicing groove; the card block and the card slot are adapted to be snap-fitted, and the first splicing groove and the second splicing groove are spliced ​​to form an L-shaped fixed groove.

[0011] Preferably, the outer tube includes a spring tube and a connecting sleeve, the proximal end of the spring tube is welded and fixed to the limiting tube, the distal end of the spring tube is extended into the connecting sleeve and fixed by welding, and the distal end of the connecting sleeve is rotatably connected to the pliers head assembly.

[0012] Preferably, the clamp head assembly further comprises a bracket, a T-shaped sleeve and a blade needle assembly; the distal end of the connecting sleeve is rotatably connected to the proximal end of the T-shaped sleeve; the proximal end of the bracket is press-fitted and fixed to the distal end of the T-shaped sleeve; The bracket is provided with an installation opening; two connecting rods are arranged in the installation opening, and one end of the two connecting rods is hinged by a connecting pin, the far end of the steel wire is fixedly connected to the connecting pin, and the other ends of the two connecting rods are respectively hinged to the two sampling spoons through a pin shaft; The film needle assembly includes a film needle and a connecting shaft that passes through the film needle, and the connecting shaft is welded and fixed to the film needle; the connecting shaft is installed in the C-shaped openings on both sides of the far end of the bracket, and the connecting shaft is welded and fixed to the bracket; the middle parts of the two sampling spoons are hinged through the connecting shaft, and the film needle is located between the two sampling spoons.

[0013] Preferably, the pliers head assembly also includes a push-pull rod, which is inserted into the connecting sleeve and the T-shaped sleeve. The push-pull rod includes a fixing rod and a connecting plate that are fixedly connected to each other. The distal end of the steel wire extends into the push-pull rod and is welded and fixed. The connecting plate is sleeved on the connecting pin.

[0014] Preferably, 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 cooperating with a connecting shaft, the connecting handle extends into the mounting opening and is rotatably connected to the connecting shaft; the connecting rod is fixedly connected to or integrally formed with the pin shaft, the connecting handle is also provided with a second connecting hole cooperating with the pin shaft, one of the connecting rods is fixedly connected or integrally formed with a connecting pin, and the other connecting rod is provided with a third connecting hole cooperating with the connecting pin.

[0015] Preferably, the handle assembly further comprises a fixing sleeve, an opening communicating with the sliding hole is formed on the distal side wall of the core rod, 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.

[0016] Preferably, the opening is provided with an assembly opening which cooperates with the limiting tube.

[0017] The present invention adopts the above technical solution and has the following beneficial effects: ①, when the user uses the needle-carrying rotary biopsy forceps in this case, one hand controls the finger ring and the slip ring to pull the steel wire to achieve the effect of opening and closing the sampling spoon, and 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 forceps head assembly to rotate to achieve the effect of rotating the sampling spoon. There is no need to change the gesture in the middle, which is convenient to operate and efficient in sampling.

[0018] ② The slider is assembled with the sliding sleeve after being spliced ​​by two splicing blocks, and elastic walls are set on both sides of the slider, making the entire slip ring very convenient to disassemble and assemble.

[0019] ③. An L-shaped fixing groove is set in the slider, and 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. There is no booster tube or positioning tube, which is very convenient and reduces costs.

[0020] ④. An opening is provided on the side wall of the core rod, and an assembly opening for the stopper tube is provided on the opening, making the installation of the connection assembly very convenient; ⑤. After the slice needle in the slice needle assembly is welded to the connecting shaft to form a whole, it is installed with the sampling spoon, and then inserted into the C-shaped opening of the bracket through the connecting shaft. The connecting shaft is then welded to the bracket. The installation is very convenient, saving time and effort.

[0021] ⑥ Each part is easy to produce, which can reduce labor costs.

[0022] ⑦. The T-shaped sleeve and the bracket are connected by pressing, which is convenient for assembly and disassembly and the connection structure is more reliable.

[0023] ⑧. When taking samples, the edges of the two sampling spoons overlap, making it easier to take samples by shearing without tearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of a rotating biopsy forceps with a needle.

[0025] Figure 2 for Figure 1 Enlarged schematic diagram of point C in the middle.

[0026] Figure 3 The figure is a schematic diagram of the cross-sectional structure of a rotary biopsy forceps with a needle.

[0027] Figure 4 for Figure 3 A magnified schematic diagram of point B in the middle.

[0028] Figure 5 This is a schematic diagram of the cross-sectional structure of the other side of a rotary biopsy forceps with a needle.

[0029] Figure 6 for Figure 5 A magnified schematic diagram of center A.

[0030] Figure 7 Schematic diagram of the opening arrangement on the core rod.

[0031] Figure 8 for Figure 7 Enlarged schematic diagram of point D in the middle.

[0032] Fig. 9 It is a schematic diagram of the three-dimensional structure of the core rod.

[0033] Fig.10 It is a schematic diagram of the three-dimensional structure of the slider.

[0034] Fig.11 This is a schematic diagram of the three-dimensional structure of one of the puzzle blocks.

[0035] Fig.12It is a schematic diagram of the three-dimensional structure of another puzzle block.

[0036] Fig.13 It is a schematic diagram of the three-dimensional structure of a sliding sleeve.

[0037] Fig.14 It is a schematic diagram of the three-dimensional structure of another sliding sleeve.

[0038] Fig.15 Schematic diagram of the three-dimensional structure of the sampling spoon.

[0039] Fig.16 It is a schematic diagram of the three-dimensional structure of the needle assembly.

[0040] Fig.17 A schematic diagram of the three-dimensional structure of the bracket.

[0041] Fig.18 It is a schematic diagram of the three-dimensional structure of the push-pull rod.

[0042] Fig.19 This is a schematic diagram of the three-dimensional structure of one of the connecting rods.

[0043] Fig. 20 It is a schematic diagram of the three-dimensional structure of another connecting rod.

[0044] Fig.21 It is a schematic diagram of the three-dimensional structure of the T-shaped sleeve. DETAILED DESCRIPTION

[0045] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more, unless otherwise clearly specified.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0050] like Figures 1 to 21 The needle-carrying rotating biopsy forceps shown in the figure include 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 slip ring 3. The finger ring 1 can be rotatably mounted on the proximal end of the core rod 2. The slip ring 3 is slidably arranged on the core rod 2 through a sliding hole 4 on the core rod 2. 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 slip ring 3. 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. The characteristics are as follows: 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 outer side of the core rod 2. Elastic walls 40 are provided on both sides of the slider 8. Limiting grooves 10 are provided at both ends of the sliding sleeve 9. A limiting block 11 is protruded from one end of the slider 8 relative to the elastic wall 40 and is limited by the limiting groove 10. A buckle 12 is protruded from the end of the elastic wall 40 and is limited by the limiting groove 10. The connection assembly further includes a limit tube 13, which is arranged in the core rod 2 and can rotate relative to the core rod 2. The limit tube 13 is limited by the core rod 2 in the moving direction of the steel wire 5; the steel wire 5 is passed through the limit tube 13 and the outer tube, the proximal end of the outer tube is fixedly connected to the limit 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 forward and backward. The steel wire 5 drives two sampling spoons 7 to open and close through 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 clamp head assembly to rotate.

[0051] In the above technical solution, the finger ring can rotate relative to the core rod, the outer tube can rotate relative to the core rod through the limiting tube, the clamp head assembly can rotate relative to the outer tube, and the two ends of the steel wire are respectively fixed to the slip ring and the clamp head assembly. Therefore, when the user uses the needle rotary biopsy forceps in this case, one hand controls the finger ring and the slip ring to pull the steel wire to achieve the effect of opening and closing the sampling spoon, and 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 clamp head assembly to rotate to achieve the effect of rotating the sampling spoon. There is no need to change the gesture in the middle, the operation is convenient, and the sampling is efficient.

[0052] like Figure 5 and 14 As shown, the two sides of the slider 8 extend out of the sliding holes 4, and the sliding sleeve 9 is provided with a clamping groove 41 that matches the two sides of the slider 8. The sliding sleeve 9 and the slider 8 cannot rotate relative to each other. In this way, when the user rotates the core rod, the fingers acting on the slip ring need to be slightly loosened, so that the slip ring as a whole can rotate with the core rod; or, as Figure 1 and 13 As shown, both sides of the slider 8 are in the slide hole 4, and the slide sleeve 9 and the slider 8 can rotate relative to each other. In this way, when the user rotates the core rod, the finger ring and the slide ring do not need to be loosened, and the core rod and the slider can rotate relative to the slide sleeve, so that the core rod rotates more smoothly and the rotation is more efficient.

[0053] like Figure 6 As shown, an L-shaped fixing groove 24 is provided inside the slider 8, 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 booster tube or a positioning tube, reducing costs and having a stable structure.

[0054] like 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 is provided with a clamping groove 29 and a second splicing groove 27; the clamping block 28 and the clamping groove 29 are adapted to be 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 sliding sleeve and the sliding hole after being spliced ​​by two splicing blocks, and the L-shaped fixed groove can be spliced, and the steel wire is bent and inserted into the splicing block, so that the installation of the steel wire is very convenient, and the two splicing blocks are closed to fix the steel wire, which is convenient for disassembly and assembly.

[0055] like Figure 3 and Figure 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 to the limit tube 13, and the distal end of the spring tube 14 is inserted into the connecting sleeve 16 for welding and fixing. The distal end of the connecting sleeve 16 is rotatably connected to the pliers head assembly. In this technical solution, the spring tube makes the steel wire more elastic and easy to bend. At the same time, the limit tube is welded and fixed to the spring tube, and the structure is stable, so that the steel wire and the core rod can rotate relative to each other. The spring tube is inserted into the connecting sleeve for welding, 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 layer of protective tube arranged on the outside of the spring tube.

[0056] like Figures 15 to 21 As shown, the pliers head assembly also 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 to the proximal end of the T-shaped sleeve 17; the proximal end of the bracket 15 is press-fitted and fixed to the distal end of the T-shaped sleeve 17; The bracket 15 is provided with a mounting opening 19; two connecting rods 6 are arranged in the mounting opening 19, and one end of the two connecting rods 6 is hinged by a connecting pin 20, the distal end of the steel wire 5 is fixedly connected to the connecting pin 20, and the other ends of the two connecting rods 6 are respectively hinged to the two sampling spoons 7 by a pin shaft 21; The film needle assembly includes a film needle 22 and a connecting shaft 23 that passes through the film needle 22, and the connecting shaft 23 is welded and fixed to the film needle 22; the connecting shaft 23 is installed in the C-shaped opening 30 on both sides of the far end of the bracket 15, and the connecting shaft 23 is welded and fixed to the bracket 15; the middle parts of the two sampling spoons 7 are hinged by the connecting shaft 23, and the film needle 22 is located between the two sampling spoons 7.

[0057] In the above technical solution, the T-shaped sleeve is connected to the bracket by press-fitting, and a U-shaped opening 101 is provided on the T-shaped sleeve, which is convenient for disassembly and assembly, and the connection structure is more reliable. After the sheet needle in the sheet needle assembly is welded to the connecting shaft as a whole, it is installed with the sampling spoon, and then inserted into the C-shaped opening of the bracket through the connecting shaft, and the connecting shaft is welded to the bracket, which is very convenient to install, saving time and effort.

[0058] Furthermore, the pliers head assembly further 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. In this technical solution, the steel wire can be directly fixed to the connecting pin or fixed through the push-pull rod in this case. The sleeve of the connecting piece and the connecting pin is convenient for installation and has a reliable structure.

[0059] Furthermore, the sampling spoon 7 includes a connecting handle 31 and a spoon body 32, the spoon body 32 is provided with a blade 33 for shearing, the connecting handle 31 is provided with a first connecting hole 34 that matches 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 or integrally formed with the pin 21, and the connecting handle 31 is also provided with a second connecting hole 35 that matches the pin 21, one of the connecting rods 6 is fixedly connected to or integrally formed with the connecting pin 20, and the other connecting rod 6 is provided with a third connecting hole 36 that matches the connecting pin 20. In this technical solution, the pin is formed on the connecting rod, the structural strength is high, and the pin is wide inside and narrow outside, so that a position can be reserved on the connecting pin for fixing with the steel wire; the connecting pin is formed on one connecting rod, which is easy to install and reliable in structure; when sampling, the blades of the two sampling spoons overlap, and it is easier to sample by shearing without tearing.

[0060] like Figure 1 and 3 As shown, the handle assembly further includes a fixing sleeve 37, an opening 38 communicating with the slide 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 sleeved on the distal end of the core rod 2 and covers the opening 38. In this technical solution, the opening at the distal end of the core rod can facilitate the installation of the connecting assembly, and is easy to deform, which is convenient for the installation of the fixing sleeve, and the fixing sleeve can prevent the connecting assembly from being disengaged.

[0061] like Figure 8 and 9 As shown, the opening 38 is provided with an assembly opening 39 that cooperates with the limiting tube 13. In this technical solution, the setting of the assembly opening makes it easy to insert the limiting tube into the core rod, and a clamping groove for inserting the limiting tube is formed in the assembly opening, so that the limiting tube cannot move back and forth but can rotate relative to the core rod.

[0062] also, Fig. 9 A bifurcated buckle 100 is arranged on the top of the core rod. When assembling with the finger ring, the buckle on the finger ring can be pressed into the groove, and the finger ring can be rotated relative to the core rod, so the installation is very convenient.

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0064] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and intent of the present invention.

Claims

1. A needle-equipped rotary biopsy forceps, 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), wherein the finger ring (1) is rotatably mounted on the proximal end of the core rod (2), and the slip ring (3) is slidably arranged on the core rod (2) through a sliding hole (4) on the core rod (2); the connecting assembly comprises an outer tube and a steel wire (5), wherein 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 slip ring (3), and the distal end of the steel wire (5) is connected to the forceps head assembly; the forceps head assembly comprises a connecting rod (6) and a sampling spoon (7); the characteristics are as follows: The slip ring (3) comprises 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), and the sliding sleeve (9) is sleeved on the outside of the core rod (2); elastic walls (40) are provided on both sides of the slider (8), and limiting grooves (10) are provided at both ends of the sliding sleeve (9); a limiting block (11) is protruded from one end of the slider (8) opposite to the elastic wall (40) and is cooperated with the limiting groove (10) to limit the position, and a buckle (12) is protruded from the end of the elastic wall (40) and is cooperated with the limiting groove (10) to limit the position; The connection assembly further comprises a limit tube (13), the limit tube (13) being arranged inside the core rod (2), the limit tube (13) being rotatable relative to the core rod (2), and the limit tube (13) being limited by the core rod (2) in the moving direction of the steel wire (5); the steel wire (5) is passed through the limit tube (13) and the outer tube, the proximal end of the outer tube is fixedly connected to the limit 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 an external force, thereby driving the steel wire (5) to move forward and backward. The steel wire (5) drives the two sampling spoons (7) to open and close respectively through 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 an external force, thereby driving the steel wire (5) and the clamp head assembly to rotate.

2. The rotary biopsy forceps with needle according to claim 1, characterized in that: Both sides of the slider (8) extend out of the slide hole (4), and the slide sleeve (9) is provided with grooves (41) that cooperate with both sides of the slider (8), so that the slide sleeve (9) and the slider (8) cannot rotate relative to each other; or, both sides of the slider (8) are in the slide hole (4), so that the slide sleeve (9) and the slider (8) can rotate relative to each other.

3. The rotary biopsy forceps with needle according to claim 2, characterized in that: An L-shaped fixing groove (24) is provided inside the sliding block (8), and the proximal end of the steel wire (5) is fixedly mounted in the L-shaped fixing groove (24).

4. The rotary biopsy forceps with needle according to claim 3, characterized in that: The sliding block (8) comprises two spliced ​​splicing blocks (25), one of the splicing blocks (25) being provided with a clamping block (28) and a first splicing groove (26), and the other splicing block (25) being provided with a clamping groove (29) and a second splicing groove (27); the clamping block (28) and the clamping groove (29) are adapted to be snap-fitted, and the first splicing groove (26) and the second splicing groove (27) are spliced ​​to form an L-shaped fixing groove (24).

5. The rotary biopsy forceps with needle according to claim 1, characterized in that: The outer tube comprises 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); 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 clamp head assembly.

6. The rotary biopsy forceps with needle according to claim 1, characterized in that: The clamp head assembly further comprises a bracket (15), a T-shaped sleeve (17) and a blade needle 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) and the distal end of the T-shaped sleeve (17) are press-fitted and fixed; The bracket (15) is provided with a mounting opening (19); two connecting rods (6) are arranged in the mounting opening (19), and one end of the two connecting rods (6) is hinged via a connecting pin (20), the distal end of the steel wire (5) is fixedly connected to the connecting pin (20), and the other ends of the two connecting rods (6) are respectively hinged to two sampling spoons (7) via pin shafts (21); The blade needle assembly comprises a blade needle (22) and a connecting shaft (23) passing through the blade needle (22), wherein the connecting shaft (23) and the blade needle (22) are fixed by welding; the connecting shaft (23) is installed in C-shaped openings (30) on both sides of the distal end of the bracket (15), and the connecting shaft (23) and the bracket (15) are fixed by welding; the middle parts of the two sampling spoons (7) are hinged by the connecting shaft (23), and the blade needle (22) is located between the two sampling spoons (7).

7. The rotary biopsy forceps with needle according to claim 6, characterized in that: The pliers head assembly further comprises a push-pull rod (18), the push-pull rod (18) being inserted into the connecting sleeve (16) and the T-shaped sleeve (17), the push-pull rod (18) comprising a fixing rod (42) and a connecting plate (43) which are fixedly connected to each other, the distal end of the steel wire (5) extending into the push-pull rod (18) and being welded and fixed, and the connecting plate (43) being sleeved on the connecting pin (20).

8. The rotary biopsy forceps with needle according to claim 6, characterized in that: 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) cooperating with the connecting shaft (23); the connecting handle (31) extends into the mounting opening (19) and is rotatably connected to the connecting shaft (23); the connecting rod (6) is fixedly connected to or integrally formed with the pin shaft (21); the connecting handle (31) is further provided with a second connecting hole (35) cooperating with the pin shaft (21); one of the connecting rods (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) cooperating with the connecting pin (20).

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

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

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