Femoral trochanter vertex auxiliary needle inserting device

Abstract

The utility model relates to a femoral trochanter vertex auxiliary needle inserting device which comprises a positioning body (1), a needle inserting opening (2) is formed in the top face of the positioning body (1), and a needle inserting channel (3) corresponding to the needle inserting opening (2) is formed in the positioning body (1) in a penetrating mode in the needle inserting direction. And the bottom surface of the positioning body (1) is an inner concave curved surface (4) which fits the radian of the vertex of the greater thighbone tuberosity. Compared with the prior art, the auxiliary needle inserting device for the femoral trochanter top can assist in positioning the needle inserting point of the femoral trochanter top, and directional needle inserting is carried out through the needle inserting channel.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical auxiliary instrument technical field especially is a kind of femoral trochanter apex auxiliary needle insertion device. BACKGROUND

[0002] Intertrochanteric fracture, also known as intertrochanteric fracture, refers to the fracture in the region from the base of femoral neck to the lower plane of small trochanter, which is an extra-capsular fracture. The trochanteric part of femur is a common site of osteoporosis in the elderly.

[0003] After femoral trochanteric fracture, intramedullary nail system such as PFNA is needed for fixation and treatment of fracture. In the operation, the central point of trochanteric apex needs to be found as the needle insertion point. The needle insertion point of femoral trochanteric fracture is crucial, which determines the position and direction of the main nail and also determines the quality of reduction.

[0004] The existing method is often to touch the apex by hand according to the clinical operation experience of doctors. There may be deviation if the apex is not accurate when touched by hand, and there may be deviation in the direction of needle insertion even if the needle insertion point is accurate. Therefore, the needle insertion point and the direction of needle insertion need to be adjusted many times, which greatly increases the operation difficulty. CN 213217712 U discloses a femoral trochanter apex locator, but it mainly positions the central point of femoral trochanter through four Kirschner wires, which still has the defects of complex operation, low stability of positioning device and needle insertion by experience, and is not convenient for doctors to position and insert the needle into the femoral trochanter apex.

[0005] Therefore, it is urgent to develop a new type of auxiliary device for positioning the femoral trochanter apex and inserting the needle, to facilitate the doctors to position and insert the needle. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims to provide a femoral trochanter apex auxiliary needle insertion device to facilitate doctors to position and insert the needle into the femoral trochanter apex during operation.

[0007] The purpose of the utility model can be achieved by the following technical solutions:

[0008] A femoral trochanter apex auxiliary needle insertion device comprises a positioning body, a needle insertion port is formed in the top surface of the positioning body, and a needle insertion channel corresponding to the needle insertion port is formed in the positioning body along the direction of needle insertion.

[0009] The bottom surface of the positioning body is an inner concave surface that matches the curvature of the femoral trochanter apex.

[0010] Further, a plurality of needle insertion ports are provided on the top surface of the positioning body, and a plurality of needle insertion channels corresponding to the needle insertion holes are formed in the positioning body.

[0011] Further, the needle insertion holes are spaced from each other, and the needle insertion channels are not communicated with each other.

[0012] Further, the needle insertion holes are distributed in a honeycomb shape on the top surface of the positioning body.

[0013] Further, the number of the needle insertion holes is 6-10.

[0014] Further, the diameter of the needle insertion hole is 3-5 mm.

[0015] Further, the main body of the positioning body is in a cylindrical structure, and the diameter is 1.5-2.5 cm.

[0016] Further, the length of the positioning body is 10-15 cm.

[0017] Further, the positioning body is made of stainless steel.

[0018] Further, the inner concave surface is coated with an anti-skid coating to further enhance the stability of the auxiliary positioning and needle insertion, and facilitate the operation of the doctor.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] (1) The femoral trochanter apex auxiliary needle insertion device is combined with the needle insertion hole, the needle insertion channel and the inner concave surface to assist in positioning the needle insertion point of the femoral trochanter apex, and the needle insertion is directional through the needle insertion channel.

[0021] (2) The femoral trochanter apex auxiliary needle insertion device can be provided with multiple needle insertion holes and corresponding needle insertion channels, and the doctor can adjust the needle insertion direction and the needle insertion channel according to the anatomical characteristics of the bone structure of different patients.

[0022] (3) The femoral trochanter apex auxiliary needle insertion device is small and simple, easy to operate, and has strong flexibility and stability when used in surgery.

[0023] (4) The femoral trochanter apex auxiliary needle insertion device can greatly improve the accuracy of positioning the needle insertion point and the needle insertion direction, shorten the operation time, and has industry promotion value and clinical application value. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic view of the femoral trochanter apex auxiliary needle insertion device of the present application.

[0025] Figure 2 It is a top surface schematic view of the femoral trochanter apex auxiliary needle insertion device of the embodiment 2 of the present application.

[0026] Figure 3 Figure 3 is an operation schematic view of the femoral trochanter apex auxiliary needle insertion device of the embodiment 3 of the present application.

[0027] Marked explanation in the figure:

[0028] 1-positioning body, 2-needle insertion port, 3-needle insertion channel, 4-inner concave surface. DETAILED DESCRIPTION

[0029] The present application will be described in detail below in combination with the drawings and specific embodiments. The present embodiment is implemented on the premise of the technical scheme of the present application, and detailed implementation modes and specific operation processes are given, but the protection scope of the present application is not limited to the following embodiments.

[0030] In the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application; the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0032] Embodiment 1:

[0033] The present embodiment provides a femoral trochanter apex auxiliary needle insertion device, which comprises a positioning body 1. The top surface of the positioning body 1 of the present embodiment is provided with a needle insertion port 2, and the positioning body 1 is provided with a needle insertion channel 3 corresponding to the needle insertion port 2 through the inside along the needle insertion direction.

[0034] The bottom surface of the positioning body 1 of the present embodiment is an inner concave surface 4 which fits the arc of the femoral trochanter apex, which is used for positioning the femoral trochanter apex and facilitating needle insertion.

[0035] Embodiment 2:

[0036] This embodiment provides a needle insertion device assisted at the apex of the femoral trochanter, such as... Figure 1 As shown, it includes a positioning body 1 with a cylindrical structure.

[0037] The difference from Embodiment 1 is that the top surface of the positioning body 1 in this embodiment is provided with multiple needle inlets 2, which are distributed in a honeycomb pattern. A needle insertion channel 3, corresponding one-to-one with each needle inlet 2, is formed throughout the positioning body 1 along the needle insertion direction. The needle inlets 2 are spaced apart from each other, and the needle insertion channels 3 are not interconnected, allowing for independent needle insertion through a suitable needle inlet 2. The bottom surface of the positioning body 1 is a concave curved surface 4 that conforms to the curvature of the apex of the greater femoral tuberosity, used to locate the apex of the greater femoral tuberosity and facilitate needle insertion.

[0038] Example 3:

[0039] This embodiment provides a femoral trochanter tip-assisted needle insertion device, the main body of which is a cylindrical positioning body 1. The diameter of the positioning body 1 is approximately 2 cm, and the overall length of the positioning body 1 is 12 cm. The positioning body 1 is made of stainless steel, which facilitates high-temperature sterilization and repeated use.

[0040] The top surface of the positioning body 1 has multiple needle inlets 2, with seven needle inlets 2 distributed in a honeycomb pattern. Each needle inlet 2 has a diameter of 4mm. Inside the positioning body 1, along the needle insertion direction, are needle insertion channels 3 corresponding to each needle inlet 2. The needle inlets 2 are spaced apart from each other, and the needle insertion channels 3 are not interconnected. The doctor can select appropriate needle inlets 2 and needle insertion channels 3 for independent needle insertion and adjust the settings according to the patient's anatomical structure.

[0041] The bottom surface of the positioning body 1 is a concave curved surface 4 that conforms to the apex of the femoral tuberosity, used to locate the apex of the femoral tuberosity and facilitate needle insertion. The concave curved surface 4 is coated with an anti-slip coating, which can enhance the stability of auxiliary positioning and needle insertion, making it easier for doctors to perform surgical operations.

[0042] When a patient with a femoral trochanteric fracture needs to be fixed and treated with the PFNA intramedullary nail system, a soft tissue channel is established after a small incision is made at the proximal end of the femoral trochanter. The femoral trochanteric apex auxiliary needle insertion device of this embodiment is inserted, and its bottom surface is made as close as possible to the femoral trochanteric apex. The guide needle is inserted along the long axis of the femur. After fluoroscopy, the guide needle is adjusted to the ideal insertion point through the honeycomb opening.

[0043] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A needle insertion device assisted at the apex of the femoral trochanter, characterized in that, It includes a positioning body (1), the top surface of which is provided with a needle inlet (2), and the positioning body (1) is provided with a needle inlet channel (3) corresponding to the needle inlet (2) through the needle inlet direction; The bottom surface of the positioning body (1) is a concave curved surface (4) that conforms to the arc of the apex of the greater femoral tuberosity.

2. The femoral trochanter tip-assisted needle insertion device according to claim 1, characterized in that, The top surface of the positioning body (1) is provided with multiple needle inlets (2), and the positioning body (1) is provided with multiple needle inlets (3) corresponding to the needle inlets (2).

3. The femoral trochanter tip-assisted needle insertion device according to claim 2, characterized in that, The needle inlets (2) are spaced apart from each other, and the needle channels (3) are not connected to each other.

4. The femoral trochanter tip-assisted needle insertion device according to claim 2, characterized in that, The needle inlet (2) is distributed in a honeycomb pattern on the top surface of the positioning body (1).

5. The femoral trochanter apex-assisted needle insertion device according to claim 2, characterized in that, The number of needle inlets (2) is 6-10.

6. The femoral trochanter apex-assisted needle insertion device according to claim 1, characterized in that, The diameter of the needle inlet (2) is 3-5 mm.

7. The femoral trochanter tip-assisted needle insertion device according to claim 1, characterized in that, The main body of the positioning body (1) is a cylindrical structure with a diameter of 1.5-2.5cm.

8. The femoral trochanter apex-assisted needle insertion device according to claim 1, characterized in that, The length of the positioning body (1) is 10-15cm.

9. The femoral trochanter apex-assisted needle insertion device according to claim 1, characterized in that, The positioning body (1) is made of stainless steel.

10. The femoral trochanter apex-assisted needle insertion device according to claim 1, characterized in that, The concave curved surface (4) is coated with an anti-slip coating.

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