Combined type multifunctional guide pile casing

Abstract

The utility model relates to a combined type multifunctional guide casing which comprises a drill bit casing pipe, a screw tap casing pipe and a nail holding casing pipe, the drill bit casing pipe, the screw tap casing pipe and the nail holding casing pipe are all of a cylindrical structure, and the drill bit casing pipe, the screw tap casing pipe and the nail holding casing pipe are sequentially and coaxially arranged in a sleeved mode from outside to inside. A drill sleeve clamp spring is arranged between the drill sleeve and the screw tap sleeve, a screw tap sleeve clamp spring is arranged between the screw tap sleeve and the nail holding sleeve, and guide structures are arranged at the front ends of the drill sleeve, the screw tap sleeve and the nail holding sleeve. According to the multifunctional operation guiding protective cylinder, the three sleeves are mutually clamped through the elastic force of the clamping springs to form a combined structure, due to the fact that the head conical guiding structure is adopted, drilling, tapping and nailing work can be carried out only through one-time centering and positioning, and therefore the operation efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the medical field and relates to orthopedic surgical tools, in particular to a combined multifunctional guide sleeve. Background Art

[0002] Currently, in orthopedic surgery, ordinary screws are used during the three steps of drilling, tapping, and screwing in the installation of bone plates, providing protection and guidance. Self-tapping screws are used during the two steps of drilling and screwing in the installation of bone plates, providing protection and guidance.

[0003] In the prior art, the drill guide sleeve, tap guide sleeve, and nail guide sleeve in traditional surgical plans are used separately. Before the doctor prepares to drill a hole in the bone with a drill, he will ask the instrument nurse to hand him the drill guide sleeve and the drill bit together. After drilling the hole, the doctor returns the drill bit and drill guide sleeve to the instrument nurse, who will then hand him the taps and tap guide sleeves for the next step. After the taps have tapped out the threads, the doctor returns the taps and tap guide sleeves to the instrument nurse, who then hands him the screwdriver, bone screws, and nail guide sleeves for the next step. After tightening the bone screws on the bone plate, the doctor hands the screwdriver and nail guide sleeve back to the instrument nurse.

[0004] The existing technology has the following problems:

[0005] (1) The drill guide sleeve, tap guide sleeve and nail guide sleeve used in traditional orthopedic surgery are designed to be used in combination. The one you need is taken from the operating box. During the delivery process during the operation, if the coordination fails, the surgical instrument will fall and be contaminated, and cannot be used again, which will affect the progress of the operation.

[0006] (2) During traditional orthopedic surgery, the drill guide sleeve, tap guide sleeve, and nail guide sleeve used in the operation need to find the chamfered structure of the threaded hole of the bone plate. After the centering is completed, drilling, tapping, and nailing can be carried out. Each instrument needs to be repositioned, and each bone screw needs to be positioned three times, which reduces the operation efficiency. Utility Model Content

[0007] The purpose of the utility model is to provide a combined multifunctional guide casing in view of the deficiencies in the prior art.

[0008] The utility model is realized through the following technical solutions:

[0009] A combined multifunctional guide casing includes a drill casing, a tap casing and a nail holding casing. The drill casing, the tap casing and the nail holding casing are all cylindrical structures. The drill casing, the tap casing and the nail holding casing are coaxially arranged in sequence from the outside to the inside. A drill casing sleeve retaining spring is provided between the drill casing and the tap casing, and a tap casing retaining spring is provided between the tap casing and the nail holding casing. The front ends of the drill casing, the tap casing and the nail holding casing are all provided with guide structures.

[0010] Moreover, the rear parts of the drill sleeve, the tap sleeve and the nail holding sleeve are all connected with a handle.

[0011] Moreover, an oblong chip removal hole is provided on one radial side of the middle portion of the drill sleeve, the tap sleeve and the nail holding sleeve.

[0012] Moreover, the chip removal holes and the handles are respectively arranged on opposite radial sides of the drill sleeve, the tap sleeve and the nail holding sleeve. The chip removal holes of the drill sleeve, the tap sleeve and the nail holding sleeve are aligned in the same direction and connected inside and outside.

[0013] Moreover, the drill sleeve includes a front end of the drill pipe and a rear end of the drill pipe. The front end of the drill pipe and the rear end of the drill pipe are coaxially arranged in an integral body. A cylindrical channel that passes through the front and back is provided inside the drill sleeve. A guide structure that cooperates with the chamfer of the bone plate hole is provided at the end of the front end of the rotating tube. There is an annular step structure on the outer periphery of the rear end of the drill pipe, and a groove is provided in the middle of the annular step structure for limiting the installation of the drill sleeve retaining spring.

[0014] Moreover, the tap sleeve includes a front end of the wire tube, a middle section of the wire tube and a rear end of the wire tube, and the front end of the wire tube, the middle section of the wire tube and the rear end of the wire tube are arranged in a coaxial sequence from front to rear and are made in one piece. A cylindrical channel that passes through the front and back is provided inside the tap sleeve. The diameter of the channel inside the front end of the wire tube is smaller than the internal channels of the middle section of the wire tube and the rear end of the wire tube. The channel inside the front end of the wire tube can be tightly matched with the outer diameter of the front end of the drill bit sleeve. The outer periphery of the rear end of the wire tube is provided with an annular step structure, and the middle part of the annular step structure is provided with a groove for limiting the installation of the drill bit sleeve retaining spring.

[0015] Moreover, the nail holding sleeve includes a nail holding front part and a nail holding rear part, which are coaxially arranged from front to rear and made into one piece. A cylindrical channel that passes through the front and back is provided inside the nail holding sleeve. The diameter of the internal channel of the nail holding front part is smaller than the internal channel of the nail holding rear part, and the internal channel of the nail holding front part can be tightly matched with the front outer diameter of the tap sleeve.

[0016] The advantages and beneficial effects of the utility model are:

[0017] 1. The use of the multifunctional surgical guide sleeve of the present application can avoid the risk of surgical instruments being contaminated during surgery.

[0018] 2. The multifunctional surgical guide sleeve of the present application uses the elastic force of the retaining spring to clamp the three sleeves to each other to form a combined structure. Due to the use of a conical guide structure at the head, drilling, tapping, and nailing can be carried out with only one centering position, thereby improving surgical efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the combined structure of the combined multifunctional guide casing.

[0020] Figure 2 It is a structural diagram of the drill casing.

[0021] Figure 3 It is a structural diagram of a tap casing.

[0022] Figure 4 It is a structural diagram of a nail holding sleeve.

[0023] Figure markings: 1. Drill bit sleeve; 11. Front end of drill pipe; 12. Rear end of drill pipe; 2. Tap sleeve; 21. Front end of wire tube; 22. Middle section of wire tube; 23. Rear end of wire tube; 3. Nail holding sleeve; 31. Front part of nail holding; 32. Rear part of nail holding; 4. Tap sleeve retaining spring; 5. Drill bit sleeve retaining spring; 6. Handle; 7. Chip removal hole. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with specific embodiments.

[0025] A combined multifunctional guide casing, such as Figure 1 As shown, it includes a drill casing, a tap casing and a nail holding casing. The drill casing, the tap casing and the nail holding casing are all cylindrical structures. The drill casing, the tap casing and the nail holding casing are coaxially arranged from the outside to the inside. The drill casing is located at the outermost layer and the nail holding casing is located at the innermost layer.

[0026] In order to facilitate accurate positioning, the front ends of the drill sleeve, tap sleeve and nail holding sleeve are all provided with a guide structure. The guide structure can be aligned with the chamfered structure of the hole on the bone plate, making it convenient for doctors to perform drilling, tapping and nailing operations quickly and accurately.

[0027] To prevent the drill bit from falling out, a drill sleeve retaining spring is installed between the drill bit sleeve and the tap sleeve to ensure accurate positioning. A tap sleeve retaining spring is installed between the tap sleeve and the nail holder to ensure accurate positioning. The retaining spring's spring tension can be manually disengaged, but the sleeves must not fall out accidentally during movement.

[0028] In order to facilitate handheld operation, the rear parts of the drill casing, the tap casing and the nail holding casing are all connected with a handle.

[0029] An oblong chip removal hole is provided on one radial side of the middle portion of the drill sleeve, the tap sleeve and the nail holding sleeve for discharging wastes such as blood and bone chips to avoid blockage in the working path of the sleeve.

[0030] The chip removal holes and the handles are respectively arranged on the radially opposite sides of the drill sleeve, the tap sleeve and the nail holding sleeve. When in use, the handles are aligned and the chip removal holes of the drill sleeve, the tap sleeve and the nail holding sleeve are aligned in the same direction, and are connected inside and outside.

[0031] See attached Figure 2 As shown, the drill sleeve includes a front end of the drill pipe and a rear end of the drill pipe. The front end of the drill pipe and the rear end of the drill pipe are coaxially arranged in an integral body. A cylindrical channel running through the front and back is provided inside the drill sleeve. A guide structure that cooperates with the chamfer of the bone plate hole is provided at the end of the front end of the drill pipe. There is an annular step structure on the outer periphery of the rear end of the drill pipe, and a groove is provided in the middle of the annular step structure for limiting the installation of the drill sleeve retaining spring.

[0032] See attached Figure 3 As shown, the tapping sleeve includes a front end of a wire tube, a middle section of a wire tube, and a rear end of a wire tube. The front end of the wire tube, the middle section of the wire tube, and the rear end of the wire tube are sequentially arranged coaxially from front to back and are made in one piece. A cylindrical channel that runs through the front and back is provided inside the tapping sleeve. The channel diameter inside the front end of the wire tube is smaller than the internal channels of the middle section of the wire tube and the rear end of the wire tube. The channel inside the front end of the wire tube can closely match the front end outer diameter of the drill bit sleeve to ensure accurate positioning. The outer periphery of the rear end of the wire tube is provided with an annular stepped structure, and a groove is provided in the middle of the annular stepped structure for limiting the installation of the drill bit sleeve retaining spring.

[0033] See attached Figure 4 As shown, the nail holding sleeve includes a nail holding front part and a nail holding rear part, which are coaxially arranged from front to rear and are made in one piece. A cylindrical channel that passes through the front and back is provided inside the nail holding sleeve. The diameter of the internal channel of the nail holding front part is smaller than the internal channel of the nail holding rear part. The internal channel of the nail holding front part can fit tightly with the front outer diameter of the tap sleeve to ensure accurate positioning.

[0034] How to use the guide casing in this application:

[0035] The three sleeves are used together and placed on the metal bone plate. After drilling a hole in the bone with a drill bit, the drill sleeve is pulled out.

[0036] After drilling, a light hole is formed on the bone. Before screwing in the screw, a tap is needed to machine a thread in the light hole.

[0037] When the tap has finished tapping the thread, then pull out the tap sleeve;

[0038] After doing this, the screwdriver is equipped with a screw, and the screw is screwed into the threaded hole on the bone along the screw holding sleeve. After tightening, the screw holding sleeve is removed;

[0039] In actual applications, multiple screws need to be screwed into each metal bone plate for fixation, and the above process is repeated every time a screw is tightened.

[0040] The above-described embodiment provides a detailed description of the technical solution of the present invention. It is worth noting that this embodiment is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications and improvements made within the scope of the present invention should be included in the scope of protection of the present invention.

Claims

1. A combined multifunctional guide casing, characterized in that: It includes a drill casing, a tap casing and a nail holding casing. The drill casing, the tap casing and the nail holding casing are all cylindrical structures. The drill casing, the tap casing and the nail holding casing are coaxially arranged in sequence from the outside to the inside. A drill casing sleeve retaining spring is arranged between the drill casing and the tap casing, and a tap casing retaining spring is arranged between the tap casing and the nail holding casing. The front ends of the drill casing, the tap casing and the nail holding casing are all provided with guide structures.

2. The combined multifunctional guide casing according to claim 1, characterized in that: The rear parts of the drill sleeve, the tap sleeve and the nail holding sleeve are all connected with a handle.

3. The combined multifunctional guide casing according to claim 2, characterized in that: An oblong chip removal hole is provided on one radial side of the middle portion of the drill sleeve, the tap sleeve and the nail holding sleeve.

4. The combined multifunctional guide casing according to claim 3, characterized in that: The chip removal holes and the handle are respectively arranged on the radially opposite sides of the drill sleeve, the tap sleeve and the nail holding sleeve. The chip removal holes of the drill sleeve, the tap sleeve and the nail holding sleeve are aligned in the same direction and connected inside and outside.

5. The combined multifunctional guide casing according to claim 1, characterized in that: The drill sleeve includes a front end and a rear end of the drill pipe. The front end and the rear end of the drill pipe are coaxially arranged in an integrated manner. A cylindrical channel that passes through the front and back is provided inside the drill sleeve. A guide structure that cooperates with the chamfer of the bone plate hole is provided at the end of the front end of the rotating tube. An annular step structure is provided on the outer periphery of the rear end of the drill pipe. A groove is provided in the middle of the annular step structure for limiting the installation of a drill sleeve retaining spring.

6. The combined multifunctional guide casing according to claim 1, characterized in that: The tap sleeve includes a front end of the wire tube, a middle section of the wire tube and a rear end of the wire tube. The front end of the wire tube, the middle section of the wire tube and the rear end of the wire tube are arranged in a coaxial sequence from front to rear and are made in one piece. A cylindrical channel that passes through the front and back is provided inside the tap sleeve. The diameter of the channel inside the front end of the wire tube is smaller than the internal channels of the middle section of the wire tube and the rear end of the wire tube. The channel inside the front end of the wire tube can be closely matched with the outer diameter of the front end of the drill bit sleeve. The outer periphery of the rear end of the wire tube is provided with an annular step structure, and a groove is provided in the middle of the annular step structure for limiting the installation of the drill bit sleeve retaining spring.

7. The combined multifunctional guide casing according to claim 1, characterized in that: The nail holding sleeve includes a nail holding front part and a nail holding rear part, which are arranged in a coaxial sequence from front to rear and are made into an integral piece. A cylindrical channel that passes through the front and back is provided inside the nail holding sleeve. The diameter of the internal channel of the nail holding front part is smaller than the internal channel of the nail holding rear part. The internal channel of the nail holding front part can be tightly matched with the front outer diameter of the tap sleeve.

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