Medical sampling forceps

Abstract

The utility model discloses a pair of medical sampling forceps which comprises a holding handle, and the upper end of the holding handle is annular; the clamp further comprises a clamp body, the upper end of the clamp body is rotationally connected with the holding handle, a guide groove and an installation groove which are communicated are formed in the clamp body in the axial direction in the vertical direction, a spring is arranged in the installation groove, and a cover plate is arranged on the clamp body and shields the installation groove. A lantern ring is further arranged and arranged outside the clamp body in a sleeving mode, a guide block is arranged on the inner wall of the lantern ring and inserted into the guide groove, a pull wire is arranged in the lantern ring, the upper end of the pull wire penetrates through the spring, and the lower end of the pull wire extends out of the clamp body. The lower end of the traction line is connected with a sampling mechanism. The holding handle can rotate freely, and the sampling mechanism at the lower end is kept in an original position. When the sampling forceps are not operated, the forceps head at the tail end is kept closed, a patient cannot be injured accidentally, medical staff do not need to close the forceps head with great effort, the safety and efficiency of an operation are improved, the structure of the forceps body can shield the spring, the spring cannot be touched accidentally, and the use safety can also be guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a medical sampling forceps. Background Art

[0002] Sampling forceps are an indispensable tool in endoscopic examination. Sampling forceps can enter the patient's body through the endoscope to clamp the diseased tissue in the body and provide pathological basis for diagnosis.

[0003] At present, the sampling forceps commonly used in surgical operations do not have the function of automatic jaw reset. The pull ring must be pulled for a long time to close the jaws to prevent the jaws from opening when the sampling forceps enter the human tissue and causing tissue scratches, or the tissue falling off after taking the tissue and causing repeated surgery. Manually closing the jaws will bring inconvenience to the operation, consume the operator's physical strength, and easily cause misoperation, which reduces the safety and efficiency of the operation. Utility Model Content

[0004] In order to overcome at least one of the technical problems of the above-mentioned prior art, the utility model provides a medical sampling forceps whose jaws are automatically reset and kept closed, which is convenient for medical personnel to perform surgery and improves the safety and efficiency of the surgery.

[0005] Provided is a medical sampling forceps, comprising a gripping handle, the upper end of which is annular; and a forceps body, the upper end of which is rotatably connected to the gripping handle, the forceps body being axially provided with a communicating guide groove and a mounting groove, a spring being provided in the mounting groove, and a cover plate being provided on the forceps body, the mounting groove being shielded by the cover plate; and a collar being provided, the collar being sleeved on the forceps body, a guide block being provided on the inner wall of the collar, the guide block being inserted into the guide groove, a traction line being provided in the collar, the upper end of which passes through the spring and the lower end of which extends out of the forceps body, a pressure block being provided in the collar, the pressure block being located above the spring; and a sampling mechanism being connected to the lower end of the traction line.

[0006] The above-mentioned medical sampling forceps have at least the following beneficial effects: the gripping handle can be rotated freely, and the sampling mechanism at the lower end remains in place, which is convenient for operating and using the sampling forceps at different angles. When in use, the operating ring drives the traction line to move, and the traction line drives the sampling mechanism at the end to open. When there is no force, the spring lifts the ring, and the traction line moves upward, so that the sampling mechanism remains closed. When the sampling forceps are not operated, the end clamp head remains closed, and the patient will not be accidentally injured. Medical staff do not need to work hard to close the clamp head, which improves the safety and efficiency of the operation. The structure of the clamp body can shield the spring, and the spring will not be accidentally touched, which can also ensure the safety of use.

[0007] In some embodiments of the above-mentioned medical sampling forceps, the outer diameter of the forceps body section provided with the guiding groove is smaller than the inner diameter of the collar, and the outer diameter of the forceps body section provided with the installation groove is larger than the inner diameter of the collar. The collar is limited to move up and down along the forceps body part of the guiding groove, and when it moves to the lowest end, it is restricted by the forceps body and cannot move, so that the opening angle of the forceps mouth is limited, which is not easy to accidentally injure the patient and will not damage the instrument. Moreover, the structure is simpler, and the installation and production are more convenient.

[0008] As a further improvement of the above solution, an outlet is provided on the inner wall of the lower end of the forceps body, and the diameter of the outlet gradually increases from top to bottom. The outlet at the lower end of the forceps body is set to be flared. When the sampling forceps are bent, they bend along the arc surface of the flare, and the bending angle is arc-shaped, avoiding the bending of the traction wire when the bending angle is too large.

[0009] As a further improvement of the above solution, a sleeve is sleeved outside the traction wire, and the upper end of the sleeve is fixed in the forceps body. The sleeved sleeve can increase the bending angle of the traction wire, making the bending angle larger, and also avoiding the bending of the traction wire.

[0010] Among them, the sampling mechanism includes a left clamp and a right clamp. The upper ends of the left clamp and the right clamp are hinged to each other. The upper ends of the left clamp and the right clamp are also respectively hinged with a left connecting rod and a right connecting rod. The left connecting rod and the right connecting rod are hinged to the lower end of the pull rod, and the upper end of the pull rod is fixedly connected to the traction wire. When the traction wire pulls the pull rod upward, it drives the left connecting rod and the right connecting rod to rotate inward, driving the left clamp and the right clamp to approach and close to each other. When the traction wire moves downward, correspondingly, the left clamp and the right clamp separate and open. This sampling mechanism has a simple structure and is easy to operate, and is more labor-saving during operation.

[0011] In some embodiments of the above-mentioned medical sampling forceps, the guiding groove is a through groove penetrating the forceps body, and the guiding block passes through the guiding groove. The through guiding groove can reduce the weight of the forceps body, making the forceps body lighter. The guiding block is inserted into the guiding groove, and the guiding groove can limit the position in the front-back and left-right directions, making the movement of the collar more stable.

[0012] In some embodiments of the above-mentioned medical sampling forceps, a finger ring is further provided outside the collar. It is not easy to slip when operating through the finger ring, and it can facilitate the operation of the sampling forceps.

[0013] In some embodiments of the above-mentioned medical sampling forceps, the traction wire includes a rigid tube and a traction rope connected up and down. The upper end of the rigid tube is fixedly connected to the collar. The spring is sleeved outside the rigid tube, and the lower end of the traction rope extends out of the forceps body. The rigid tube is not easy to deform. When the collar moves, the rigid tube can completely transfer the force received by the collar to the traction rope, making the operation more labor-saving. Description of the Drawings

[0014] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly describe the drawings required for the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present utility model, rather than all embodiments. Those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative efforts:

[0015] Figure 1 Schematic structural diagram of the first embodiment of the present utility model;

[0016] Figure 2 Exploded view of the first embodiment of the present utility model;

[0017] Figure 3 Partial structural schematic diagram of the sampling mechanism of the first embodiment of the present utility model;

[0018] Figure 4 Cross-sectional schematic diagram of the second embodiment of the present utility model. Detailed implementation manners

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] It should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" 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, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0021] Refer to Figures 1 to 4 , a medical sampling forceps is disclosed. The sampling forceps includes a holding handle 100, and the upper end of the holding handle 100 is annular. It should be understood that in this application, the upper end is the end close to the operator, and the lower end is the end far from the operator. The operator controls the sampling forceps by controlling the holding handle 100. The annular structure can facilitate the entry of the user's fingers or other operating mechanisms and can tightly hold the sampling forceps.

[0022] In the first and second embodiments, the lower end of the holding handle 100 is rotatably connected to the pliers body 200. A rotary block is provided at the upper end of the pliers body 200, and a clamping hole is provided at the lower end of the holding handle 100. The rotary block is inserted into the clamping hole of the holding handle 100, and the block can rotate freely in the clamping hole. When the holding handle 100 rotates, the pliers body 200 will not rotate. The rotational connection between the holding handle 100 and the pliers body 200 can also be achieved through a bearing and a hinge shaft, as long as the holding handle 100 and the pliers body 200 can rotate relative to each other respectively.

[0023] Axially arranged up and down in the pliers body 200 are a communicating guide groove 210 and a mounting groove 220. A collar 300 is sleeved outside the pliers body 200. The collar 300 is a hollow ring and can move up and down along the axis of the pliers body 200. A guide block 310 is provided on the inner wall of the collar 300, and the guide block 310 is inserted into the guide groove 210. Referring to the embodiments in Figure 1 and Figure 4 In the embodiment, the guide groove 210 is a through groove penetrating the pliers body 200. The guide block 310 is provided on the inner wall of the collar 300, and the guide block 310 passes through the guide groove 210 and is fixed in the inner hole of the collar 300. The through guide groove 210 can reduce the weight of the pliers body 200, making the pliers body 200 lighter. The guide block 310 passing through the guide groove 210 can stably connect the pliers body 200 and the collar. In addition, the guide groove 210 can limit the collar 300 in the front-back and left-right directions, making the axial movement of the collar 300 more stable.

[0024] A spring 230 is arranged in the mounting groove 220 of the pliers body 200. A baffle is provided at the lower end of the mounting groove 220 to limit the spring 230. The spring 230 moves in the guide groove 210 and the mounting groove 220. A traction wire 320 is arranged in the collar 300. The upper end of the traction wire 320 passes through the spring 230 and is connected to the collar 300. The lower end of the traction wire 320 passes through the pliers body 200 and extends out of the pliers body 200. A pressing block 330 is arranged in the collar 300, and the pressing block 330 is located above the spring 230. The lower end of the traction wire 320 is connected to a sampling mechanism 400.

[0025] A cover plate 240 is provided on the pliers body 200. The cover plate 240 is generally long and strip-shaped, and the cover plate 240 is longer than the mounting groove 220. When the cover plate 240 is fixed in the pliers body 200, the cover plate 240 shields the mounting groove 220. When the collar 300 is in a balanced state, the collar 300 is located at the upper end of the spring 230. At this time, the collar 300 and the cover plate 240 can shield the spring 230, and the spring 230 will not be accidentally touched during use, ensuring the safety of the sampling pliers.

[0026] When the collar 300 is not operated, the collar 300 is not under force. At this time, the spring 230 inside the pliers body 200 is in a springed state. The spring 230 pushes up the collar 300, and the traction line 320 is pulled upward, so that the sampling mechanism 400 remains closed. When the user operates the collar 300, the collar 300 is pushed downward, the spring 230 is squeezed, and the traction line 320 is driven to move downward, so that the sampling mechanism 400 at the end of the traction line 320 opens.

[0027] Refer to the Figure 3 In the embodiment in the appendix, the sampling mechanism 400 includes a left clamp 410 and a right clamp 420. The upper ends of the left clamp 410 and the right clamp 420 are hinged to each other. The upper ends of the left clamp 410 and the right clamp 420 are also respectively hinged with a left connecting rod 430 and a right connecting rod 440. The left connecting rod 430 and the right connecting rod 440 are hinged to the lower end of the pull rod 450. The upper end of the pull rod 450 is fixedly connected to the traction line 320. When the traction line 320 pulls the pull rod 450 upward, the pull rod 450 drives the upper ends of the left connecting rod 430 and the right connecting rod 440 upward. The lower ends of the left connecting rod 430 and the right connecting rod 440 rotate inward, thereby driving the left clamp 410 and the right clamp 420 to rotate along the hinge center, and the ends of the clamps approach each other to realize the closing of the pliers head. When the traction line 320 moves downward, correspondingly, the left clamp 410 and the right clamp 420 are separated and opened. This sampling mechanism has a simple structure and is easy to operate, and is more labor-saving during operation.

[0028] The pliers head at the end of the sampling pliers remains closed when not under force, will not open when entering the body, will not accidentally injure the patient, and can also keep the pliers head tightened after loosening the collar 300 to clamp the sample tissue. Medical staff do not need to operate the sampling pliers to close the pliers head again, improving the safety and efficiency of the operation.

[0029] The outer diameter of the section of the pliers body 200 provided with the guide groove 210 is smaller than the inner diameter of the collar 300, and the outer diameter of the section of the pliers body 200 provided with the installation groove 220 is larger than the inner diameter of the collar 300. The collar 300 is sleeved on the pliers body 200 of the guide groove 210 part. When the outer diameter of the lower end of the pliers body 200 becomes larger, the collar 300 is limited to move up and down along the pliers body 200 of the guide groove 210 part. When the collar 300 moves to the lowest end, it is restricted by the pliers body 200 and cannot move, so that the opening angle of the pliers mouth is limited, it is not easy to accidentally injure the patient, and the instrument will not be damaged. Moreover, the structure is simpler, and the installation and production are more convenient.

[0030] Refer to the Figure 2 and the Figure 4In the embodiment, an outlet 250 is provided on the pliers body 200 below the installation groove 220. The traction wire 320 passes through the outlet 250 and extends out of the pliers body 200. The diameter of the outlet 250 gradually increases from top to bottom in a flared shape. The traction wire 320 extends out of the pliers body 200 along the outlet 250. When the traction wire 320 is bent, the traction wire 320 bends along the arc surface of the flared shape at the outlet 250 part of the pliers body 200. The transition between the traction wire 320 inside the outlet 250 and the part outside the pliers body 200 is smoother. The entire traction wire 320 is bent into an arc shape, avoiding the bending of the extending part of the traction wire 320 on the pliers body 200 when the bending angle is too large.

[0031] A sleeve 340 is sleeved on the lower end of the traction wire 320. A clamping block is connected to the upper end of the sleeve 340. A clamping groove is provided inside the pliers body 200. The clamping block is limited and fixed in the clamping groove. The sleeved sleeve 340 can increase the bending angle of the traction wire 320, making the bending angle larger, avoiding the bending of the traction wire 320 outside the pliers body 200, and improving the safety of use. Referring to the embodiment in the attached drawings, the sleeve 340 is a spring tube. In other embodiments, the sleeve 340 can also be a plastic tube.

[0032] According to the cross-sectional view in the attached Figure 4 The traction wire 320 includes a rigid tube 321 and a traction rope 322 connected up and down. The upper end of the rigid tube 321 is fixedly connected to the collar 300. The rigid tube 321 is located inside the pliers body 200. The spring 230 is sleeved outside the rigid tube 321. The upper end of the traction rope 322 is fixedly connected to the rigid tube 321 inside the pliers body 200. The lower end of the traction rope 322 extends out of the pliers body 200. The sleeve 340 is arranged outside the traction rope 322. The rigid tube 321 can be selected from metal tubes such as copper tubes and stainless steel tubes. The rigid material is not easily deformed and can transmit external force more efficiently. When the collar 300 moves, the rigid tube 321 moves together, completely transmitting the force received by the collar 300 to the traction rope 322, driving the sampling mechanism 400 at the end of the traction rope 322 to act. The segmented structure of the traction wire 320 is more labor-saving and convenient for the user to operate the sampling pliers.

[0033] In some embodiments not shown, a finger ring is further provided outside the collar 300. The finger ring can be single or multiple. The finger rings are arranged on both sides of the collar 300. When in use, the finger can pass through the finger ring to hold the collar 300. Through the operation of the finger ring, it is better to hold and not easy to slip, which can facilitate the operation of the sampling pliers.

[0034] The above is a specific description of the preferred embodiments of the present utility model. The described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. Other embodiments that can be obtained all fall within the scope of protection of the present utility model.

Claims

1. A medical sampling forceps, characterized in that: include A gripping handle (100), wherein the upper end of the gripping handle (100) is ring-shaped; A pliers body (200), the upper end of the pliers body (200) being rotatably connected to the gripping handle (100), the pliers body (200) being provided with a communicating guide groove (210) and a mounting groove (220) in the axial direction, a spring (230) being provided in the mounting groove (220), and a cover plate (240) being provided on the pliers body (200), the cover plate (240) shielding the mounting groove (220); A collar (300), the collar (300) being sleeved outside the pliers body (200), a guide block (310) being arranged on the inner wall of the collar (300), the guide block (310) being inserted into the guide groove (210), a traction line (320) being arranged inside the collar (300), the upper end of the traction line (320) passing through the spring (230) and the lower end of the traction line (320) extending outside the pliers body (200), a pressure block (330) being arranged inside the collar (300), the pressure block (330) being located above the spring (230); A sampling mechanism (400), wherein the sampling mechanism (400) is connected to the lower end of the pulling line (320).

2. The medical sampling forceps according to claim 1, characterized in that: The outer diameter of the section of the pliers body (200) provided with the guide groove (210) is smaller than the inner diameter of the collar (300), and the outer diameter of the section of the pliers body (200) provided with the mounting groove (220) is larger than the inner diameter of the collar (300).

3. The medical sampling forceps according to claim 1, characterized in that: An outlet (250) is provided on the inner wall of the lower end of the clamp body (200), and the diameter of the outlet (250) gradually increases from top to bottom.

4. The medical sampling forceps according to claim 1, characterized in that: The outer cover of the pulling line (320) is provided with a sleeve (340), and the upper end of the sleeve (340) is fixed in the clamp body (200).

5. The medical sampling forceps according to claim 1, characterized in that: The sampling mechanism (400) comprises a left clamp (410) and a right clamp (420), the upper ends of the left clamp (410) and the right clamp (420) are hinged to each other, and the upper ends of the left clamp (410) and the right clamp (420) are also hinged to a left connecting rod (430) and a right connecting rod (440), respectively. The left connecting rod (430) and the right connecting rod (440) are hinged to the lower end of a pull rod (450), and the upper end of the pull rod (450) is fixedly connected to the traction line (320).

6. The medical sampling forceps according to claim 1, characterized in that: The guide groove (210) is a through groove that penetrates the pliers body (200), and the guide block (310) passes through the guide groove (210).

7. The medical sampling forceps according to claim 1, characterized in that: A finger ring is also provided outside the sleeve ring (300).

8. The medical sampling forceps according to claim 1, characterized in that: The traction line (320) comprises a rigid tube (321) and a traction rope (322) connected up and down, the upper end of the rigid tube (321) is fixedly connected to the collar (300), the spring (230) is sleeved outside the rigid tube, and the lower end of the traction rope (322) extends outside the clamp body (200).

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