Double-claw patella reduction forceps with guide hole

Abstract

The invention belongs to the technical field of minimally invasive surgery of patella fracture percutaneous closed reduction kirschner wire fixation, and provides a pair of double-claw patella reduction forceps with a guide hole, which comprises a first forceps handle and a second forceps handle, the first forceps handle is rotatably connected with the second forceps handle through a pivot, the first forceps handle is connected with a first upper pole claw and a second upper pole claw, and the second forceps handle is connected with a second upper pole claw. The second clamp handle is connected with a first lower pole claw and a second lower pole claw, and the first lower pole claw and the second lower pole claw are provided with threaded guide holes. The threaded guide holes are formed in the first lower pole claw and the second lower pole claw, a kirschner wire is drilled into a fracture block along the sleeves matched with the threaded guide holes in the operation process, the threaded guide holes have the auxiliary positioning effect on the penetrating position of the kirschner wire, the kirschner wire can be drilled into the accurate position of the fracture block more easily, other instruments are not needed, and the operation efficiency is improved. And the operation difficulty is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of minimally invasive surgery for percutaneous closed reduction and Kirschner wire fixation of patellar fractures, in particular to a double-claw patellar reduction forceps with a guide hole. Background Art

[0002] Patellar reduction forceps are a commonly used tool in orthopedic surgery, mainly used for the reduction and temporary fixation of patellar fractures; patellar reduction forceps usually consist of two main parts: the forceps arm and the forceps handle. The forceps arm is the part that directly contacts the fracture end and is used to clamp and fix the fracture fragments, while the forceps handle is the part operated by the surgeon, and the clamping force of the forceps arm is adjusted by rotation or leverage.

[0003] In minimally invasive surgery for percutaneous closed reduction of patellar fractures, it is usually difficult to quickly obtain good alignment after the fracture fragments are clamped with patellar reduction forceps, and multiple fluoroscopy and repeated operations are required. After the fracture is confirmed to be reduced, it is necessary to penetrate the fracture fragment with a Kirschner wire to fix the fracture fragment. Due to the small size of the patella, elastic deviation of the Kirschner wire, and limited operating area, it is difficult to quickly insert the Kirschner wire into the accurate position of the fracture fragment, which increases the difficulty of the operation.

[0004] Therefore, those skilled in the art have proposed a double-claw patella reduction forceps with a guide hole to solve the problems raised by the background technology. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a double-claw patella reduction forceps with a guide hole to solve the problem in the prior art that the Kirschner wire is difficult to quickly drive into the accurate position of the fracture fragment due to the small size of the patella, elastic deviation of the Kirschner wire, limited operating area, etc., thereby increasing the difficulty of the operation.

[0006] A double-claw patella reduction forceps with a guide hole comprises a first handle and a second handle, wherein the first handle is connected with an upper pole first claw and an upper pole second claw, and the second handle is connected with a lower pole first claw and a lower pole second claw, wherein the lower pole first claw and the lower pole second claw are provided with a threaded guide hole.

[0007] Preferably, the upper pole claw and the upper pole claws form a first fitting corner and a second fitting corner respectively, and the lower pole claw and the lower pole claws form a third fitting corner and a fourth fitting corner respectively.

[0008] Preferably, the one-angle bonding is 130°, the two-angle bonding is 70°, the three-angle bonding is 40°, and the four-angle bonding is 140°.

[0009] Preferably, the accommodation width of the lower pole one claw is greater than that of the lower pole two claws.

[0010] Preferably, the maximum distance between the upper pole claw one and the upper pole claw two is 2 cm, and the maximum distance between the lower pole claw one and the lower pole claw two is 1.5 cm.

[0011] Preferably, the connection between the first clamp handle and the upper pole claw, the connection between the first clamp handle and the upper pole claws, the connection between the second clamp handle and the lower pole claw, and the connection between the second clamp handle and the lower pole claws are respectively set as arcs.

[0012] Preferably, the first clamp handle and the second clamp handle are respectively connected with finger clips.

[0013] Preferably, the first clamp handle is connected to a locking rod, and the second clamp handle is provided with a locking groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention provides threaded guide holes on the first and second lower pole claws. During surgery, the Kirschner wire is drilled into the fracture block along a sleeve matched with the threaded guide hole. The threaded guide hole plays an auxiliary positioning role for the penetration position of the Kirschner wire, making it easier for the Kirschner wire to drill into the accurate position of the fracture block without the aid of other instruments, thereby reducing the difficulty of the surgery.

[0016] 2. The present invention refers to the anatomical structure characteristics of the patella, and through the specially made degrees of fitting one angle, fitting two angles, fitting three angles and fitting four angles, the upper pole one claw, upper pole two claws, lower pole one claw and lower pole two claws can better adapt to the anatomical shape of the patella when percutaneously piercing and clamping the upper and lower fracture fragments of the patella, firmly grasp the patella, quickly and accurately close and reduce, and avoid multiple fluoroscopy and repeated operations.

[0017] 3. The present invention enables medical personnel to better operate the first and second clamp handles by designing the finger buckle. When the fingers pass through the finger buckle, the opening angles of the first and second clamp handles are controlled by opening and closing the fingers, thereby enabling the upper pole one claw, the upper pole two claws, the lower pole one claw and the lower pole two claws to complete the action of clamping the fracture fragment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall schematic diagram of a double-claw patella reduction forceps with a guide hole;

[0019] Figure 2 A front view of a double-claw patella reduction forceps with a guide hole;

[0020] Figure 3 A bottom view of a double-claw patella reduction forceps with a guide hole;

[0021] Figure 4 The left side view of a double-claw patella reduction forceps with a guide hole.

[0022] In the figure:

[0023] 1. First clamp handle; 2. Second clamp handle; 3. One claw on the upper pole; 4. Two claws on the upper pole; 5. One claw on the lower pole; 6. Two claws on the lower pole; 7. Threaded guide hole; 8. Fit one corner; 9. Fit two corners; 10. Fit three corners; 11. Fit four corners; 12. Finger buckle; 13. Locking rod; 14. Locking groove. DETAILED DESCRIPTION

[0024] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] Embodiment 1

[0026] As attached Figure 1 As shown, the present invention provides a double-claw patella reduction forceps with a guide hole, comprising a first handle 1 and a second handle 2, the first handle 1 and the second handle 2 are connected by a pivot rotation, the operation of medical staff causes the first handle 1 and the second handle 2 to rotate, and then the clamping force on the fracture block is adjusted, the first handle 1 is connected with an upper pole claw 3 and an upper pole claw 4, the second handle 2 is connected with a lower pole claw 5 and a lower pole claw 6, wherein the upper pole claw 3, the upper pole claw 4, the lower pole claw 5 and the lower pole claw 6 are the parts directly in contact with the fracture block, and are used to clamp and fix the fracture block, the lower pole claw 5 and the lower pole claw 6 are provided with a threaded guide hole 7, the threaded guide hole 7 is equipped with a conventional sleeve, during surgery, the Kirschner wire is drilled into the fracture block along the conventional sleeve connected to the threaded guide hole 7, the Kirschner wire is inserted into the fracture block along the threaded guide hole 7, the threaded guide hole 7 plays an auxiliary positioning role for the penetration position of the Kirschner wire, so that the Kirschner wire is easier to drill into the accurate position of the fracture block, and no other instruments are needed, thereby reducing the difficulty of the operation.

[0027] As can be seen from the above, the upper pole claw 3 and the upper pole claw 4 are percutaneously inserted to grasp the upper pole fracture fragment of the patella, and the lower pole claw 5 and the lower pole claw 6 are percutaneously inserted to grasp the lower pole fracture fragment of the patella, and then the patella reduction forceps are clamped to achieve good reduction of the fracture end; through the conventional sleeve used in conjunction with the threaded guide hole 7 on the lower pole claw 5 and the lower pole claw 6, the Kirschner wire is accurately drilled and fixed into the patella fracture fragment, thereby realizing a minimally invasive surgery of closed reduction and fixation; the patella reduction forceps have claws with anatomical configuration characteristics, which play a role in firmly grasping the patella and realizing accurate closed reduction; the threaded guide hole 7 and the conventional sleeve used in conjunction with it play an auxiliary positioning role in the penetration position of the Kirschner wire, making it easier for the Kirschner wire to drill into the accurate position of the fracture fragment without the need for the aid of other instruments, thereby reducing the difficulty of the operation.

[0028] Embodiment 2

[0029] As attached Figure 3As shown, this embodiment is basically the same as the previous embodiment, with the difference that the upper pole claw 3 and the upper pole claw 4 are respectively formed with a fitting corner 8 and a fitting corner 9, and the lower pole claw 5 and the lower pole claw 6 are respectively formed with a fitting triangle 10 and a fitting corner 11, wherein the upper pole claw 3, the upper pole claw 4, the lower pole claw 5 and the lower pole claw 6 are able to adapt to the shape of the patella through the fitting corner 8, the fitting corners 9, the fitting triangle 10 and the fitting corners 11, thereby reducing damage to the surrounding soft tissues.

[0030] As attached Figure 3 As shown, specifically, the one-corner 8 is 130°, the two-corner 9 is 70°, the three-corner 10 is 40°, and the four-corner 11 is 140°.

[0031] As attached Figure 3 To Attachment Figure 4 As shown, further, the accommodation width of the lower pole first claw 5 is greater than that of the lower pole second claw 6. By specially making the accommodation widths of the lower pole first claw 5 and the lower pole second claw 6, the shape of the patella can be more closely fitted.

[0032] As attached Figure 2 As shown, further, the maximum distance between the upper pole claw 3 and the upper pole claw 4 is 2 cm, and the maximum distance between the lower pole claw 5 and the lower pole claw 6 is 1.5 cm.

[0033] As attached Figure 1 and attached Figure 4 As shown, further, the connection between the first clamp handle 1 and the upper pole claw 3, the connection between the first clamp handle 1 and the upper pole claws 4, the connection between the second clamp handle 2 and the lower pole claw 5, and the connection between the second clamp handle 2 and the lower pole claws 6 are respectively set as arcs to facilitate surgical operations and intraoperative fluoroscopy.

[0034] Embodiment 3

[0035] As attached Figure 1 To Attachment Figure 2 As shown, this embodiment is basically the same as the previous embodiment, except that the first clamp handle 1 and the second clamp handle 2 are respectively connected with a finger buckle 12. When in use, inserting a finger into the finger buckle 12 can better control the first clamp handle 1 and the second clamp handle 2 to rotate and open and close.

[0036] As attached Figure 1 To Attachment Figure 2 As shown, specifically, the first pliers handle 1 is connected to a locking rod 13, on which a plurality of first ratchets are arranged, and the second pliers handle 2 is provided with a locking groove 14, in which a second ratchets are arranged, and the first pliers handle 1 and the second pliers handle 2 can be fixed at a desired opening and closing angle by engaging the first ratchets and the second ratchets with each other.

[0037] As can be seen from the above, the thumb and index finger are respectively inserted into the two finger buckles 12, and the opening angle of the first clamp handle 1 and the second clamp handle 2 is controlled by opening and closing the thumb and index finger. During the opening period, the locking rod 13 moves in the locking groove 14, and the locking rod 13 can only move in one direction in the locking groove 14 through the first ratchet and the second ratchet. When the locking rod 13 moves in the opposite direction, it will be blocked and limited. When the first clamp handle 1 and the second clamp handle 2 need to be closed, the locking rod 13 is moved to separate the first ratchet and the second ratchet. At this time, the first clamp handle 1 and the second clamp handle 2 can be closed freely.

[0038] The standard parts used in the present invention can all be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0039] In the description of the present invention, 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, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0040] 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. 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 representations of the above terms do 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. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0043] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0044] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-claw patella reduction forceps with a guide hole, comprising a first handle (1) and a second handle (2), wherein the first handle (1) and the second handle (2) are rotatably connected via a pivot, characterized in that: The first clamp handle (1) is connected to an upper pole claw (3) and an upper pole claw (4), and the second clamp handle (2) is connected to a lower pole claw (5) and a lower pole claw (6), wherein the lower pole claw (5) and the lower pole claw (6) are provided with threaded guide holes (7).

2. A double-claw patella reduction forceps with a guide hole as claimed in claim 1, characterized in that: The upper pole claw (3) and the upper pole claw (4) are respectively formed with a first fitting corner (8) and a second fitting corner (9), and the lower pole claw (5) and the lower pole claw (6) are respectively formed with a third fitting corner (10) and a fourth fitting corner (11).

3. A double-claw patella reduction forceps with a guide hole as claimed in claim 2, characterized in that: The one-angle bonding (8) is 130°, the two-angle bonding (9) is 70°, the three-angle bonding (10) is 40°, and the four-angle bonding (11) is 140°.

4. A double-claw patella reduction forceps with a guide hole as claimed in claim 3, characterized in that: The accommodation width of the lower pole first claw (5) is greater than that of the lower pole second claw (6).

5. A double-claw patella reduction forceps with a guide hole as claimed in claim 4, characterized in that: The maximum distance between the upper pole claw (3) and the upper pole claw (4) is 2 cm, and the maximum distance between the lower pole claw (5) and the lower pole claw (6) is 1.5 cm.

6. A double-claw patella reduction forceps with a guide hole as claimed in claim 5, characterized in that: The connection between the first clamp handle (1) and the upper pole claw (3), the connection between the first clamp handle (1) and the upper pole claws (4), the connection between the second clamp handle (2) and the lower pole claw (5), and the connection between the second clamp handle (2) and the lower pole claws (6) are respectively arranged in circular arcs.

7. A double-claw patella reduction forceps with a guide hole as claimed in claim 6, characterized in that: The first clamp handle (1) and the second clamp handle (2) are respectively connected with a finger buckle (12).

8. A double-claw patella reduction forceps with a guide hole as claimed in claim 7, characterized in that: The first clamp handle (1) is connected to a locking rod (13), and the second clamp handle (2) is provided with a locking groove (14).

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