Steel wire hook type endoscope biopsy forceps with needle

Abstract

The utility model relates to the technical field of medical instruments, and discloses a needle steel wire hook type endoscope biopsy forceps which comprise an installation shell, a rotating shaft is rotatably installed in the installation shell, a movable handle is fixedly installed on the surface of the rotating shaft, a gear is further fixedly connected to the surface of the rotating shaft, a rack is arranged on the top of the gear, and the movable handle is fixedly connected with the rack. A needle tube is fixedly connected to one side of the mounting shell, a steel wire rope is arranged in the needle tube, a sampling assembly is mounted at the end, away from the mounting shell, of the needle tube, and a positioning assembly is mounted on the surface of the mounting shell. The sampling device is simple and convenient to operate, sampling work of human tissue can be rapidly completed by pressing and loosening the movable handle, in addition, after the human tissue is taken down, a worker can push the bearing block through the shifting ring to enable the teeth to be inserted into the tooth grooves, and at the moment, the worker does not need to push the teeth to be inserted into the tooth grooves even if the worker loosens the movable handle. And the movable hook and the fixed hook can still keep clamping the human tissues.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically to a needle-wire hook type endoscopic live sampling forceps. Background Technology

[0002] Vial sampling, also known as live tissue biopsy or live histology, is a medical diagnostic technique that involves taking a small sample of tissue from a patient to analyze its pathological characteristics. It is usually performed in conjunction with endoscopic observation.

[0003] Currently, when performing live sampling, medical staff need to insert sampling tools into the human body. However, most of the existing sampling tools are not easy to operate. Furthermore, during the sampling process, the medical staff's hands need to keep pressing the sampling tool firmly. If they relax, the clamp on the tissue sample will loosen and cause it to fall out. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a needle wire hook type endoscopic live sampling forceps to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a needle-wire hook type endoscopic live tissue sampling forceps, including a mounting shell, a rotating shaft rotatably mounted inside the mounting shell, a movable handle fixedly mounted on the surface of the rotating shaft, a gear fixedly connected to the surface of the rotating shaft, a rack provided on the top of the gear, the rack meshing with the gear, a needle tube fixedly connected to one side of the mounting shell, a steel wire rope disposed inside the needle tube, one end of the steel wire rope passing through the needle tube and extending into the interior of the mounting shell, one end of the steel wire rope being fixedly connected to the rack, a sampling component mounted on the end of the needle tube opposite to the mounting shell, a positioning component mounted on the surface of the mounting shell, the sampling component being used for sampling human tissue, and the positioning component being used for positioning the movable handle after pressing.

[0006] Preferably, a fixed handle is fixedly installed on the side of the mounting shell away from the needle tube, and the movable handle and the fixed handle are fixedly connected by an elastic metal sheet.

[0007] Preferably, a fixing block is fixedly connected to the top of the inner cavity of the mounting shell, and two fixing blocks are provided. The two fixing blocks are fixedly connected to each other by a fixing rod. A guide block is fixedly connected to the top of the rack, and the guide block is sleeved on the surface of the fixing rod.

[0008] Preferably, the sampling assembly includes a trigger block, a fixed hook, and a rotating shaft for the movable hook. The trigger block is fixedly connected to the end of the wire rope away from the rack. The rotating shaft is rotatably installed inside the needle tube. The fixed hook is fixedly connected to the end of the needle tube away from the mounting shell. A through hole is provided on the surface of the needle tube. An L-shaped rod is fixedly connected to the surface of the movable hook. The L-shaped rod passes through the through hole and is fixedly installed on the surface of the rotating shaft.

[0009] Preferably, a trigger rod is fixedly connected to the surface of the rotating shaft, and two trigger rods are symmetrically arranged. One end of the trigger rod is provided with a guide arc surface, and the trigger block is provided with a guide slope on the side away from the wire rope. The guide arc surface and the guide slope abut against each other, and a coil spring is sleeved on the surface of the rotating shaft.

[0010] Preferably, a fixed cylinder is fixedly connected inside the needle tube, the steel wire rope passes through the fixed cylinder, and the steel wire rope and the fixed cylinder form a sliding guide fit.

[0011] Preferably, the positioning component includes a fixed shell, which is fixedly installed on the surface of the mounting shell. The fixed shell has an extension column and a receiving block inside. The extension column is fixedly connected to one end of the rotating shaft. The surface of the extension column is provided with teeth. The receiving block has a tooth groove on one side. The teeth and the tooth groove match.

[0012] Preferably, a guide rod is fixedly connected inside the fixed shell, the receiving block is sleeved on the surface of the guide rod, and an actuating ring is fixedly connected to the surface of the receiving block, the actuating ring extending to the outside of the fixed shell.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] The operator can hold the fixed handle and the movable handle, insert the needle into the human body, and then press the movable handle. The movable hook moves around the axis of rotation towards the fixed hook. The movable hook and the fixed hook work together to remove the human tissue. After the operator removes the needle from the human body, they can release the movable handle. Driven by the elastic metal plate and the spring force, the movable hook can move around the axis of rotation away from the fixed hook, automatically releasing the human tissue. This invention is simple and convenient to operate. The sampling of human tissue can be quickly completed by pressing and releasing the movable handle. In addition, after the human tissue is removed, the operator can push the receiving block by the actuating ring, so that the teeth can be inserted into the groove. At this time, even if the operator releases the movable handle, the movable hook and the fixed hook can still keep the human tissue clamped, effectively preventing the human tissue from falling out due to loosening. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0017] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the image.

[0018] Figure 4 This utility model Figure 2 Enlarged view of the structure at point B in the image.

[0019] Figure 5 This is a schematic diagram of the movable handle structure of this utility model.

[0020] Figure 6 This is a cross-sectional view of the positioning component of this utility model.

[0021] The attached figures are labeled as follows: 1. Mounting housing; 11. Fixing handle; 12. Fixing block; 13. Fixing rod; 2. Rotating shaft; 21. Gear; 3. Movable handle; 31. Elastic metal sheet; 4. Rack; 41. Guide block; 5. Needle tube; 51. Fixing cylinder; 52. Through hole; 6. Steel wire rope; 7. Sampling assembly; 71. Trigger block; 711. Guide ramp; 72. Fixing hook; 73. Movable hook; 74. Rotating shaft; 75. Trigger rod; 751. Guide arc surface; 76. L-shaped rod; 77. Coil spring; 8. Positioning assembly; 81. Fixing housing; 82. Extension column; 821. Tooth; 83. Receiving block; 84. Guide rod; 85. Actuating ring. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The needle wire hook type endoscopic live sampling forceps involved in this utility model are not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] This utility model provides a needle-wire hook type endoscopic live tissue sampling forceps, including a mounting shell 1, a rotating shaft 2 rotatably mounted inside the mounting shell 1, a movable handle 3 fixedly mounted on the surface of the rotating shaft 2, a gear 21 fixedly connected to the surface of the rotating shaft 2, a rack 4 provided on the top of the gear 21, the rack 4 meshing with the gear 21, a needle tube 5 fixedly connected to one side of the mounting shell 1, a wire rope 6 provided inside the needle tube 5, one end of the wire rope 6 passing through the needle tube 5 and extending into the interior of the mounting shell 1, one end of the wire rope 6 being fixedly connected to the rack 4, a sampling component 7 mounted on the end of the needle tube 5 away from the mounting shell 1, and a positioning component 8 mounted on the surface of the mounting shell 1. The sampling component 7 is used to sample human tissue, and the positioning component 8 is used to position the movable handle 3 after pressing.

[0024] Furthermore, a fixed handle 11 is fixedly installed on the side of the housing 1 away from the needle tube 5. The movable handle 3 and the fixed handle 11 are fixedly connected by an elastic metal sheet 31. The elastic force of the elastic metal sheet 31 can drive the movable handle 3 to move away from the fixed handle 11 around the axis of the rotating shaft 2.

[0025] Furthermore, a fixing block 12 is fixedly connected to the top of the inner cavity of the mounting shell 1. There are two fixing blocks 12, and the two fixing blocks 12 are fixedly connected to each other by a fixing rod 13. A guide block 41 is fixedly connected to the top of the rack 4. The guide block 41 is sleeved on the surface of the fixing rod 13. The guide block 41 and the fixing rod 13 form a sliding guide fit along the axis of the fixing rod 13. The cooperation between the guide block 41 and the fixing rod 13 can ensure the stability of the rack 4 during movement.

[0026] Furthermore, the sampling assembly 7 includes a trigger block 71, a fixed hook 72, a movable hook 73, and a rotating shaft 74. The trigger block 71 is fixedly connected to the end of the wire rope 6 away from the rack 4. The rotating shaft 74 is rotatably mounted inside the needle tube 5. The fixed hook 72 is fixedly connected to the end of the needle tube 5 away from the mounting shell 1. A through hole 52 is provided through the surface of the needle tube 5. An L-shaped rod 76 is fixedly connected to the surface of the movable hook 73. The L-shaped rod 76 passes through the through hole 52 and is fixedly mounted on the surface of the rotating shaft 74. A trigger rod 75 is fixedly connected to the surface of the rotating shaft 74. There are two symmetrically arranged trigger rods 75. One end of the trigger rod 75 is provided with a guide arc surface 751, and the trigger block 71 is provided with a guide slope surface 711 on the side away from the wire rope 6. The guide arc surface 751 and the guide slope surface 711 abut against each other. When the trigger block 71 moves towards the fixed hook 72, the guide slope surface 711 can slide along the guide arc surface 751, so that the trigger rod 75 rotates around the axis of the rotating shaft 74. A coil spring 77 is sleeved on the surface of the rotating shaft 74. The elastic force of the coil spring 77 can drive the movable hook 73 to move away from the fixed hook 72 around the axis of the rotating shaft 74.

[0027] Furthermore, a fixed cylinder 51 is fixedly connected inside the needle tube 5, and the steel wire rope 6 passes through the fixed cylinder 51. The steel wire rope 6 and the fixed cylinder 51 form a sliding guide fit. The setting of the fixed cylinder 51 can improve the stability of the steel wire rope 6 during the movement process.

[0028] Furthermore, the positioning component 8 includes a fixed housing 81, which is fixedly installed on the surface of the mounting housing 1. Inside the fixed housing 81, there is an extension post 82 and a receiving block 83. The extension post 82 is fixedly connected to one end of the rotating shaft 2. The surface of the extension post 82 is provided with teeth 821, and one side of the receiving block 83 is provided with a tooth groove. When the teeth 821 are inserted into the tooth groove, the position of the rotating shaft 2 can be fixed and cannot be rotated. Inside the fixed housing 81, there is a guide rod 84. The receiving block 83 is sleeved on the surface of the guide rod 84. The receiving block 83 and the guide rod 84 form a sliding guide fit along the axial direction of the guide rod 84. A toggle ring 85 is fixedly connected to the surface of the receiving block 83. The toggle ring 85 extends to the outside of the fixed housing 81. The setting of the toggle ring 85 facilitates the operator to adjust one end of the receiving block 83.

[0029] The working principle of this utility model is as follows: The operator holds the fixed handle 11 and the movable handle 3 with their hand, and with the help of the endoscope, inserts the needle 5 into the human body. Then, the operator presses the movable handle 3, and the elastic metal sheet 31 contracts under the compression of the movable handle 3 and the fixed handle 11. The movable handle 3 moves and drives the rotating shaft 2 to rotate synchronously around its own axis. The rotation of the rotating shaft 2 drives the rack 4 to move synchronously through the gear 21. The guide block 41 at the top of the rack 4 slides synchronously along the fixed rod 13. The movement of the rack 4 drives the trigger block 71 to move synchronously towards the fixed hook 72 through the steel wire rope 6. During this process, the guide inclined surface 711 slides along the guide arc surface 751 at one end of the trigger rod 75, so that the trigger rod 75 rotates around the axis of the rotating shaft 74. The rotating shaft 74 also rotates synchronously around its own axis. The coil spring 77 gradually tightens and the elastic force increases. The rotation of the rotating shaft 74 drives the movable hook 73 to move synchronously around the axis of the rotating shaft 74 towards the fixed hook 72 through the L-shaped rod 76. The movable hook 73 and the fixed hook 72 cooperate to remove the human tissue.

[0030] The operator pushes the receiving block 83 with the actuating ring 85, causing the receiving block 83 to move along the guide rod 84 towards the extension column 82. The teeth 821 are inserted into the tooth groove, fixing the position of the rotating shaft 2 and preventing it from rotating. At this time, the operator releases the movable handle 3, and the movable hook 73 and the fixed hook 72 still clamp the human tissue. Then, the operator removes the needle 5 from the human body and pushes the receiving block 83 back to its original position with the actuating ring 85. The elasticity of the elastic metal sheet 31 is released, and the elasticity of the elastic metal sheet 31 drives the trigger block 71 to move away from the fixed hook 72. The elasticity of the coil spring 77 is released, and the elasticity of the coil spring 77 drives the movable hook 73 to move away from the fixed hook 72 around the axis of the rotating shaft 74. At this time, the human tissue is released, and the operator can remove the human tissue.

[0031] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0032] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0033] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A needle-wire hook type endoscopic live sample collection forceps, comprising a mounting housing (1), characterized in that, The mounting housing (1) has a rotating shaft (2) rotatably mounted inside. A movable handle (3) is fixedly mounted on the surface of the rotating shaft (2). A gear (21) is also fixedly connected to the surface of the rotating shaft (2). A rack (4) is provided on the top of the gear (21). The rack (4) meshes with the gear (21). A needle tube (5) is fixedly connected to one side of the mounting housing (1). A steel wire rope (6) is provided inside the needle tube (5). One end of the steel wire rope (6) passes through the needle tube (5) and extends into the mounting housing (1). One end of the steel wire rope (6) is fixedly connected to the rack (4). A sampling component (7) is installed on the end of the needle tube (5) away from the mounting housing (1). A positioning component (8) is installed on the surface of the mounting housing (1). The sampling component (7) is used to sample human tissue. The positioning component (8) is used to position the movable handle (3) after pressing.

2. The endoscopic live sample collection forceps with needle and wire hook as described in claim 1, characterized in that, The mounting shell (1) is fixedly mounted with a fixed handle (11) on the side away from the needle tube (5), and the movable handle (3) and the fixed handle (11) are fixedly connected by an elastic metal sheet (31).

3. The endoscopic live sample collection forceps with needle and wire hook as described in claim 2, characterized in that, The top of the inner cavity of the mounting shell (1) is fixedly connected to a fixing block (12). There are two fixing blocks (12), and the two fixing blocks (12) are fixedly connected to each other by a fixing rod (13). The top of the rack (4) is fixedly connected to a guide block (41), and the guide block (41) is sleeved on the surface of the fixing rod (13).

4. The endoscopic live sample collection forceps with needle and wire hook as described in claim 3, characterized in that, The sampling assembly (7) includes a trigger block (71), a fixed hook (72), a movable hook (73), and a rotating shaft (74). The trigger block (71) is fixedly connected to the end of the wire rope (6) away from the rack (4). The rotating shaft (74) is rotatably installed inside the needle tube (5). The fixed hook (72) is fixedly connected to the end of the needle tube (5) away from the mounting shell (1). A through hole (52) is provided through the surface of the needle tube (5). An L-shaped rod (76) is fixedly connected to the surface of the movable hook (73). The L-shaped rod (76) passes through the through hole (52) and is fixedly installed on the surface of the rotating shaft (74).

5. The endoscopic live sample collection forceps with needle wire hook as described in claim 4, characterized in that, A trigger rod (75) is fixedly connected to the surface of the rotating shaft (74). Two trigger rods (75) are symmetrically arranged. One end of the trigger rod (75) is provided with a guide arc surface (751). The trigger block (71) is provided with a guide inclined surface (711) on the side away from the wire rope (6). The guide arc surface (751) abuts against the guide inclined surface (711). A coil spring (77) is sleeved on the surface of the rotating shaft (74).

6. The endoscopic live sample collection forceps with needle and wire hook as described in claim 5, characterized in that, The needle tube (5) is fixedly connected to a fixed cylinder (51), the wire rope (6) passes through the fixed cylinder (51), and the wire rope (6) and the fixed cylinder (51) form a sliding guide fit.

7. The endoscopic live sample collection forceps with needle wire hook as described in claim 1, characterized in that, The positioning component (8) includes a fixed shell (81), which is fixedly installed on the surface of the mounting shell (1). An extension column (82) and a receiving block (83) are provided inside the fixed shell (81). The extension column (82) is fixedly connected to one end of the rotating shaft (2). The surface of the extension column (82) is provided with teeth (821). One side of the receiving block (83) is provided with a tooth groove. The teeth (821) match the tooth groove.

8. The endoscopic live sample collection forceps with needle wire hook as described in claim 7, characterized in that, A guide rod (84) is fixedly connected inside the fixed shell (81), and the receiving block (83) is sleeved on the surface of the guide rod (84). A toggle ring (85) is fixedly connected to the surface of the receiving block (83), and the toggle ring (85) extends to the outside of the fixed shell (81).

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