Accurate-indexing rotatable biopsy forceps
By introducing a precise indexing mechanism and angle markings into the biopsy forceps, the problem of inaccurate angle deflection of the traditional biopsy forceps head is solved, enabling precise rotational positioning and angle observation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional rotatable biopsy forceps cannot precisely limit the angle of the forceps head, which can easily lead to excessive or insufficient angle deflection.
A precision-indexed rotatable biopsy forceps was designed. A precision-indexing mechanism, including a V-shaped protrusion and a V-shaped groove, was set between the front and rear handles. The front and rear handles were precisely rotated and positioned by the cooperation of springs and locking blocks. An angle mark was set at the rear end of the front handle to facilitate observation of the forceps head deflection angle.
It achieves precise rotational positioning of the front handle relative to the rear handle, allowing for a direct view of the forceps head deflection angle, thus solving the problem of inaccurate angle deflection in traditional biopsy forceps.
Smart Images
Figure CN224070492U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical devices, specifically to a precise calibrated rotatable biopsy forceps. Background Technology
[0002] Currently, common rotating biopsy forceps on the market, such as Figure 1 As shown, it includes a clamp head, a spring tube, a cable, a front handle, a slip ring, and a rear handle. The rear end of the spring tube is connected to the front handle, and the front end is connected to the clamp head. The rear handle is located at the rear end of the front handle, and the slip ring is located on the front handle. The cable passes through the spring tube, with the front end of the cable connected to the clamp head and the rear end connected to the slip ring. The slip ring moves back and forth, and when it moves backward, it drives the clamp head to close through the cable.
[0003] The problem with traditional rotatable biopsy forceps is that the angle cannot be limited after rotation, which can easily lead to excessive or insufficient deflection of the forceps head. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a precise calibrated rotatable biopsy forceps, which solves the technical problem that traditional rotatable biopsy forceps are prone to excessive or insufficient deflection of the forceps head angle.
[0005] The technical solution adopted by this utility model to solve its technical problem is:
[0006] A precision-calibrated rotatable biopsy forceps is provided, including...
[0007] A front handle, wherein a plug rod is provided at the rear end of the front handle, and a pair of locking blocks are provided at the rear end of the plug rod and a groove is opened in the middle;
[0008] The rear handle has a rod hole and a slot at its front end, and the slot is connected to the rear end of the rod hole.
[0009] The front handle is rotatably engaged with the rod hole of the rear handle via a plug rod. The rear end of the plug rod passes through the rod hole and extends into the slot. The locking block abuts against the inner wall of the slot to restrict the axial movement of the plug rod.
[0010] A precision indexing mechanism is installed between the front handle and the rear handle, and the front handle and the rear handle are precisely rotated and positioned by the precision indexing mechanism.
[0011] Furthermore, the precise indexing mechanism includes
[0012] At least one V-shaped protrusion is provided on the rear end face of the front handle or the front end face of the rear handle;
[0013] Several V-shaped grooves are distributed in a circular shape on the front end face of the rear handle or the rear end face of the front handle.
[0014] A spring is located in the slot and sleeved on the plug rod. One end of the spring abuts against the inner wall of the slot, and the other end abuts against the block, causing the V-shaped protrusion to abut against the V-shaped groove.
[0015] Furthermore, a washer is provided on the plug rod, and the washer is located between the spring and the locking block.
[0016] Furthermore, angle markings are provided around the outer wall of the rear end of the front handle.
[0017] Furthermore, the number of the V-shaped bumps is one pair.
[0018] The beneficial effects of this utility model are:
[0019] This invention relates to a precision-calibrated rotatable biopsy forceps, which allows the front handle to be precisely rotated and positioned relative to the rear handle. The angle markings provide a clear view of the forceps head's deflection angle. Attached Figure Description
[0020] The present invention will be further described below with reference to the accompanying drawings.
[0021] Figure 1 This is a schematic diagram of a standard rotatable biopsy forceps;
[0022] Figure 2 This is a schematic diagram of the precision-calibrated rotatable biopsy forceps of this utility model;
[0023] Figure 3 This is a schematic diagram before the front and rear handlebars are assembled;
[0024] Figure 4 This is a schematic diagram of the front and rear handlebars after assembly;
[0025] Figure 5 This is a partial view of the precisely graduated rotatable biopsy forceps in the slot;
[0026] Figure 6 This is a diagram of the rear handlebar;
[0027] in,
[0028] 11. Pliers head; 12. Bourdon tube; 13. Cable; 14. Slip ring;
[0029] 2. Front handle; 21. Angle markings;
[0030] 3. Connecting rod; 31. Groove; 32. Locking block;
[0031] 4. Rear handle; 41. Rod hole; 42. Slot;
[0032] 51. V-shaped protrusion; 52. V-shaped groove;
[0033] 6. Spring; 7. Washer. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0035] This application provides a precisely calibrated rotatable biopsy forceps, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.
[0036] To address the technical problem of excessive or insufficient deflection of the forceps head angle in conventional rotatable biopsy forceps, an embodiment of this application provides a precisely calibrated rotatable biopsy forceps. This is described in detail below.
[0037] like Figures 2 to 6 As shown, a precision-calibrated rotatable biopsy forceps includes a forceps head 11, a spring tube 12, a pull cable 13, a front handle 2, a slip ring 14, and a rear handle 4.
[0038] The front handle 2 is provided with a plug rod 3 at the rear end, and a pair of locking blocks 32 are provided at the rear end of the plug rod 3 and a groove 31 is opened in the middle.
[0039] The rear handle 4 has a rod hole 41 and a slot 42 at the front end, and the rear end of the rod hole 41 is connected to the slot 42.
[0040] The front handle 2 is rotatably engaged with the rod hole 41 of the rear handle 4 via the plug rod 3. The rear end of the plug rod 3 passes through the rod hole 41 and extends into the slot 42. The locking block 32 abuts against the inner wall of the slot 42 to restrict the axial movement of the plug rod 3.
[0041] The notch 31 provides space for the locking block 32 to be positioned radially after the insertion rod hole 41.
[0042] A precision indexing mechanism is provided between the front handle 2 and the rear handle 4, and the front handle 2 and the rear handle 4 are precisely rotated and positioned by the precision indexing mechanism.
[0043] In this embodiment, a guide slope is provided on the card block 32, which is used to guide the card block 32 into the rod hole 41.
[0044] Specifically, as an optional implementation method in this embodiment, such as Figures 3 to 6 As shown, the precise indexing mechanism includes
[0045] A pair of V-shaped protrusions 51 are provided on the rear end face of the front handle 2;
[0046] Several V-shaped slots 52 are distributed in a circular shape on the front end face of the rear handle 4;
[0047] Spring 6 is located in slot 42 and sleeved on plug rod 3. One end of spring 6 abuts against the inner wall of slot 42 and the other end abuts against block 32. Under the action of spring 6, V-shaped protrusion 51 abuts against V-shaped groove 52.
[0048] As another optional implementation in this embodiment, the V-shaped protrusion 51 is provided on the front end face of the rear handle 4; each V-shaped groove 52 is distributed in a circular shape on the rear end face of the front handle 2, and the overall effect is the same as the above, which can achieve precise positioning of the front handle 2 and the rear handle 4.
[0049] Specifically, as an optional implementation method in this embodiment, such as Figure 5 As shown, a gasket 7 is provided on the plug rod 3, and the gasket 7 is located between the spring 6 and the locking block 32.
[0050] In this embodiment, the gasket 7 is an annular gasket 7, which makes it easy for the gasket 7 to be fitted onto the plug rod 3.
[0051] Specifically, as an optional implementation method in this embodiment, such as Figure 5 As shown, angle markings 21 are provided around the outer wall of the rear end of the front handle 2. The angle markings 21 allow for a direct view of the deflection angle of the pliers head 11.
[0052] As an optional implementation in this embodiment, the slot 42 radially penetrates the rear handle 4, and the through structure facilitates the insertion of the spring 6 and the washer 7 into the slot 42.
[0053] How to use a precise calibrated rotatable biopsy forceps:
[0054] 1. Instrument insertion: Gently pull the slip ring 14 to close the forceps head 11, insert the product into the endoscope forceps channel until the forceps head 11 is fully exposed in the forceps channel hole.
[0055] 2. Rotation positioning operation: Rotate the front handle 2 so that the arrow on the rear handle 4 aligns with the angle mark 21 to be deflected.
[0056] 3. Sampling operation: Fully expose part of the product clamp head 11 in the clamp channel hole, bring the clamp head 11 close to the tissue to be sampled, pull the slip ring 14 backward to close the clamp head 11 and bite the tissue to perform the sampling operation.
[0057] 5. Instrument withdrawal: Keep the clamp head 11 closed and withdraw the product from the endoscope.
[0058] All the devices (parts whose specific structures are not specified) selected in this application are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.
[0059] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0060] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0061] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.
[0062] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.
[0063] In addition, in the various embodiments of this utility model, each functional unit can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.
[0064] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A precisely calibrated rotatable biopsy forceps, characterized in that, include A front handle (2) is provided with a plug rod (3) at the rear end of the front handle (2), and a pair of locking blocks (32) are provided at the rear end of the plug rod (3) and a groove (31) is opened in the middle. The rear handle (4) has a rod hole (41) and a slot (42) at its front end, and the rear end of the rod hole (41) is connected to the slot (42). The front handle (2) is rotated to engage with the rod hole (41) of the rear handle (4) via the plug rod (3). The rear end of the plug rod (3) passes through the rod hole (41) and extends to the slot (42). The locking block (32) abuts against the inner wall of the slot (42) to restrict the axial movement of the plug rod (3). A precision indexing mechanism is set between the front handle (2) and the rear handle (4), and the front handle (2) and the rear handle (4) are precisely rotated and positioned by the precision indexing mechanism.
2. The precision-calibrated rotatable biopsy forceps according to claim 1, characterized in that, The precision indexing mechanism includes At least one V-shaped protrusion (51) is provided on the rear end face of the front handle (2) or the front end face of the rear handle (4); Several V-shaped slots (52) are distributed in a circular shape on the front end face of the rear handle (4) or the rear end face of the front handle (2); The spring (6) is located in the slot (42) and sleeved on the plug rod (3). One end of the spring (6) abuts against the inner wall of the slot (42) and the other end abuts against the block (32), causing the V-shaped protrusion (51) to abut against the V-shaped groove (52).
3. The precision-calibrated rotatable biopsy forceps according to claim 2, characterized in that, A gasket (7) is provided on the plug rod (3), and the gasket (7) is located between the spring (6) and the locking block (32).
4. The precision-calibrated rotatable biopsy forceps according to claim 2, characterized in that, Angle markings (21) are provided around the outer wall of the rear end of the front handle (2).
5. The precision-calibrated rotatable biopsy forceps according to claim 2, characterized in that, The number of the V-shaped protrusions (51) is one pair.