Endoscope biopsy forceps

Abstract

The utility model discloses endoscope biopsy forceps which comprise a handle, an outer tube, an inhaul cable, a forceps head assembly, a sliding ring and a plurality of locking assemblies. The outer pipe is fixedly connected to the handle, and the sliding ring is slidably connected to the handle. The inhaul cable is arranged in the outer pipe, and one end of the inhaul cable is fixedly connected to the sliding ring. The tong head assembly is connected to the outer tube and connected with the inhaul cable, and the inhaul cable stretches and retracts to control opening and closing of the tong head assembly; the locking assembly is used for locking the sliding ring when the tong head assembly is in a closed state. The locking assembly comprises a fixing block, an elastic piece and a locking block. The fixing block is fixedly connected to the handle, a containing groove is formed in the fixing block, the locking block is placed in the containing groove, the elastic piece is located in the containing groove, one end of the elastic piece is fixedly connected with the bottom of the containing groove, the other side of the elastic piece is fixedly connected with the locking block, a first inclined face is arranged on the locking block, and a locking hole allowing the locking block to penetrate through is formed in the sliding ring.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an endoscopic biopsy forceps. Background Art

[0002] Endoscopic examinations such as gastroscopy and colonoscopy are currently commonly used clinical examination methods because they can directly observe lesions in the gastrointestinal area. During endoscopic examinations, doctors often use biopsy forceps to directly reach the patient's body through an endoscope, and then use cutting, clamping or puncture methods to remove a certain amount of diseased tissue from the patient's body for pathological examination. A clear histopathological diagnosis can be made for most of the cases submitted for examination. This examination method is the most convenient and efficient way to obtain pathological diagnosis of diseased tissues inside the human body. Therefore, biopsy forceps are widely used in clinical endoscopic examinations.

[0003] However, the existing endoscopic biopsy forceps also have the following disadvantages: the endoscopic biopsy forceps clamp tissues through the clamp head assembly at the end, but sometimes the clamped tissues may fall out of the clamp head assembly due to improper operation or other reasons by medical staff. Utility Model Content

[0004] The main purpose of the utility model is to provide an endoscopic biopsy forceps, aiming to solve the above problems.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an endoscopic biopsy forceps, comprising a handle, an outer tube, a cable, a forceps head assembly, a slip ring and a plurality of locking assemblies;

[0006] The outer tube is fixedly connected to the handle, and the slip ring is slidably connected to the handle;

[0007] The cable is arranged in the outer tube, and one end of the cable is fixedly connected to the slip ring;

[0008] The clamp head assembly is connected to the outer tube, and the clamp head assembly is connected to the cable, and the extension and shortening of the cable controls the opening and closing of the clamp head assembly;

[0009] The locking assembly is used to lock the slip ring when the pliers head assembly is in a closed state, and the locking assembly includes a fixed block, an elastic member and a locking block; the fixed block is fixedly connected to the handle, a receiving groove is provided on the fixed block, the locking block is placed in the receiving groove, the elastic member is located in the receiving groove, and one end of the elastic member is fixedly connected to the bottom of the receiving groove, the other side of the elastic member is fixedly connected to the locking block, a first inclined surface is provided on the locking block, and a locking hole for the locking block to pass through is provided on the slip ring.

[0010] Further, the pliers head assembly includes a first pliers head, a second pliers head, a first connecting rod, a second connecting rod, a sliding hinged head, a fixed hinged head and a pliers head seat; the pliers head seat is fixedly connected at the end of the outer tube, the sliding hinged head is slidably connected in the pliers head seat, the fixed hinged head is fixedly connected in the pliers head seat, the first connecting rod and the second connecting rod are hinged on the sliding hinged head, the end of the first pliers head is hinged to the first connecting rod, the end of the second pliers head is hinged to the second connecting rod, the middle part of the first pliers head and the middle part of the second pliers head are hinged on the fixed hinged head, and the pull cable is fixedly connected to the sliding hinged head.

[0011] Furthermore, the cutting edges of the first pliers head and the second pliers head are serrated.

[0012] Furthermore, the locking hole is provided with a second inclined surface, and the inclination angle of the second inclined surface is consistent with that of the first inclined surface, so that when the locking block passes through the locking hole, the first inclined surface and the second inclined surface are in contact with each other.

[0013] Furthermore, the elastic member is a spring.

[0014] Furthermore, the outer tube is a spring outer tube.

[0015] In the technical solution of the utility model, the working principle of the endoscope biopsy forceps is that the user drives the slip ring to move on the handle, and the slip ring drives the cable to move during the movement, and the movement of the cable drives the opening and closing of the clamp head assembly, wherein, when the slip ring moves to one of the extreme positions, the clamp head assembly is in a fully open state, and when the slip ring moves to the other extreme position, the clamp head assembly is in a fully closed state, and at this time, the locking assembly will lock the slip ring to prevent the slip ring from being moved by mistake and causing the sample in the clamp head assembly to fall off. The working principle of the locking assembly is that when the slip ring moves to the extreme position, The fixed block and the locking block on the fixed block pass through the locking hole, and in the process of passing through, the first inclined surface on the locking block is squeezed by the locking hole, so that the locking block overcomes the elastic force of the elastic member and moves toward the bottom of the accommodating groove. When the locking block completely passes through the locking hole, the locking block is acted upon by the elastic force of the elastic member and moves away from the bottom of the accommodating groove. At this time, the side surface of the locking block fits the side surface of the slip ring, so that the slip ring cannot move. When the slip ring needs to be moved, the user manually pushes the locking block to make the locking block completely enter the accommodating groove. At this time, the side surface of the locking block does not contact the side surface of the slip ring, and the slip ring can be moved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 The utility model is a schematic structural diagram of an endoscopic biopsy forceps.

[0018] Figure 2 for Figure 1 Enlarged view of part A in .

[0019] Figure 3 for Figure 1 Enlarged view of part B in .

[0020] Explanation of the accompanying drawings: 1-handle, 2-outer tube, 3-pull cable, 4-slip ring, 5-fixed block, 6-elastic member, 7-locking block, 8-accommodating groove, 9-first inclined surface, 10-locking hole, 11-first clamp head, 12-second clamp head, 13-first connecting rod, 14-second connecting rod, 15-sliding hinge head, 16-fixed hinge head, 17-clamp head seat, 18-second inclined surface.

[0021] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] Please refer to Figure 1-Figure 3 , an endoscopic biopsy forceps, comprising a handle 1, an outer tube 2, a cable 3, a forceps head assembly, a slip ring 4 and a plurality of locking assemblies;

[0028] The outer tube 2 is fixedly connected to the handle 1, and the slip ring 4 is slidably connected to the handle 1;

[0029] The cable 3 is arranged in the outer tube 2, and one end of the cable 3 is fixedly connected to the slip ring 4;

[0030] The clamp head assembly is connected to the outer tube 2, and the clamp head assembly is connected to the cable 3, and the extension and shortening of the cable 3 controls the opening and closing of the clamp head assembly;

[0031] The locking assembly is used to lock the slip ring 4 when the pliers head assembly is in a closed state, and the locking assembly includes a fixing block 5, an elastic member 6 and a locking block 7; the fixing block 5 is fixedly connected to the handle 1, and a receiving groove 8 is provided on the fixing block 5. The locking block 7 is placed in the receiving groove 8, and the elastic member 6 is located in the receiving groove 8, and one end of the elastic member 6 is fixedly connected to the bottom of the receiving groove 8, and the other side of the elastic member 6 is fixedly connected to the locking block 7, and a first inclined surface 9 is provided on the locking block 7, and a locking hole 10 for the locking block 7 to pass through is provided on the slip ring 4.

[0032] In this embodiment, the working principle of the endoscope biopsy forceps is that the user drives the slip ring 4 to move on the handle 1, and the slip ring 4 drives the cable 3 to move during the movement, and the movement of the cable 3 drives the opening and closing of the clamp head assembly, wherein, when the slip ring 4 moves to one of the extreme positions, the clamp head assembly is in a fully open state, and when the slip ring 4 moves to the other extreme position, the clamp head assembly is in a fully closed state, and at this time, the locking assembly will lock the slip ring 4 to prevent the slip ring 4 from being moved by mistake, causing the sample in the clamp head assembly to fall off, and the working principle of the locking assembly is that when the slip ring 4 moves to the extreme position, the fixed block 5 and the fixed block 5 are locked. The locking block 7 passes through the locking hole 10, and in the process of passing through, the first inclined surface 9 on the locking block 7 is squeezed by the locking hole 10, so that the locking block 7 overcomes the elastic force of the elastic member 6 and moves toward the bottom of the accommodating groove 8. When the locking block 7 completely passes through the locking hole 10, the locking block 7 is acted upon by the elastic force of the elastic member 6 and moves away from the bottom of the accommodating groove 8. At this time, the side surface of the locking block 7 fits against the side surface of the slip ring 4, so that the slip ring 4 cannot move. When the slip ring 4 needs to be moved, the user manually pushes the locking block 7 to make the locking block 7 completely enter the accommodating groove 8. At this time, the side surface of the locking block 7 does not contact the side surface of the slip ring 4, and the slip ring 4 can be moved.

[0033] Furthermore, the pliers head assembly includes a first pliers head 11, a second pliers head 12, a first connecting rod 13, a second connecting rod 14, a sliding hinged head 15, a fixed hinged head 16 and a pliers head seat 17; the pliers head seat 17 is fixedly connected to the end of the outer tube 2, the sliding hinged head 15 is slidably connected in the pliers head seat 17, the fixed hinged head 16 is fixedly connected in the pliers head seat 17, the first connecting rod 13 and the second connecting rod 14 are hinged on the sliding hinged head 15, the end of the first pliers head 11 is hinged to the first connecting rod 13, the end of the second pliers head 12 is hinged to the second connecting rod 14, the middle part of the first pliers head 11 and the middle part of the second pliers head 12 are hinged to the fixed hinged head 16, and the cable 3 is fixedly connected to the sliding hinged head 15.

[0034] In this embodiment, the working principle of the pliers assembly is that the sliding hinge 15 is pulled by the cable 3, and then the first connecting rod 13 and the second connecting rod 14 move following the sliding hinge 15, and then the first connecting rod 13 drives the first pliers 11 to rotate, and the second connecting rod 14 drives the second pliers 12 to rotate, so that the first pliers 11 and the second pliers 12 complete the opening and closing actions.

[0035] Furthermore, the cutting edges of the first pliers 11 and the second pliers 12 are serrated.

[0036] In this embodiment, the cutting edges of the first clamp head 11 and the second clamp head 12 are designed to be serrated, which makes it more convenient for the first clamp head 11 and the second clamp head 12 to perform sampling work.

[0037] Furthermore, a second inclined surface 18 is provided on the locking hole 10 , and the inclination angle of the second inclined surface 18 is consistent with that of the first inclined surface 9 , so that when the locking block 7 passes through the locking hole 10 , the first inclined surface 9 and the second inclined surface 18 fit together.

[0038] In this embodiment, when the locking block 7 passes through the locking hole 10 , the entire second inclined surface 18 is simultaneously subjected to the force of the first inclined surface 9 and moves toward the direction close to the accommodating groove 8 .

[0039] Furthermore, the elastic member 6 is a spring.

[0040] Furthermore, the outer tube 2 is a spring outer tube 2 .

[0041] In this embodiment, because the outer tube is a spring outer tube, the outer tube is not easy to get tangled.

[0042] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An endoscopic biopsy forceps, characterized in that: It includes a handle, an outer tube, a cable, a clamp head assembly, a slip ring and a plurality of locking assemblies; The outer tube is fixedly connected to the handle, and the slip ring is slidably connected to the handle; The cable is arranged in the outer tube, and one end of the cable is fixedly connected to the slip ring; The clamp head assembly is connected to the outer tube, and the clamp head assembly is connected to the cable, and the extension and shortening of the cable controls the opening and closing of the clamp head assembly; The locking assembly is used to lock the slip ring when the pliers head assembly is in a closed state, and the locking assembly includes a fixed block, an elastic member and a locking block; the fixed block is fixedly connected to the handle, a receiving groove is provided on the fixed block, the locking block is placed in the receiving groove, the elastic member is located in the receiving groove, and one end of the elastic member is fixedly connected to the bottom of the receiving groove, the other side of the elastic member is fixedly connected to the locking block, a first inclined surface is provided on the locking block, and a locking hole for the locking block to pass through is provided on the slip ring.

2. The endoscopic biopsy forceps according to claim 1, characterized in that: The pliers head assembly includes a first pliers head, a second pliers head, a first connecting rod, a second connecting rod, a sliding hinged head, a fixed hinged head and a pliers head seat; the pliers head seat is fixedly connected to the end of the outer tube, the sliding hinged head is slidably connected in the pliers head seat, the fixed hinged head is fixedly connected in the pliers head seat, the first connecting rod and the second connecting rod are hinged on the sliding hinged head, the end of the first pliers head is hinged to the first connecting rod, the end of the second pliers head is hinged to the second connecting rod, the middle part of the first pliers head and the middle part of the second pliers head are hinged to the fixed hinged head, and the pull cable is fixedly connected to the sliding hinged head.

3. The endoscopic biopsy forceps according to claim 2, characterized in that: The cutting edges of the first pliers head and the second pliers head are serrated.

4. The endoscopic biopsy forceps according to claim 1, characterized in that: The locking hole is provided with a second inclined surface, and the inclination angle of the second inclined surface is consistent with that of the first inclined surface, so that when the locking block passes through the locking hole, the first inclined surface fits with the second inclined surface.

5. The endoscopic biopsy forceps according to claim 1, characterized in that: The elastic member is a spring.

6. The endoscopic biopsy forceps according to claim 1, characterized in that: The outer tube is a spring outer tube.

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