Kirschner wire and hollow drill drilling and anchor imbedding direction positioning device

Abstract

A kirschner wire and hollow drill hole and anchor implantation direction positioning device comprises a main operation sleeve, a far-end positioner, a near-end positioning sleeve and a drilling depth measurement limiting pipe, and the main operation sleeve and the near-end positioning sleeve are fixedly connected through a first connecting pipe and a second connecting pipe. The far-end positioner is inserted into the main operation sleeve and can slide towards the far end or the near end in a tube cavity of the main operation sleeve for adjustment, the depth measuring tube is inserted into the near-end positioning sleeve and is coaxially arranged with the near-end positioning sleeve, a U-shaped positioning head is arranged at the front end of the far-end positioner, and the front end of the U-shaped positioning head is aligned with the front end of the near-end positioning sleeve. According to the device, accurate positioning can be conducted when a kirschner wire and a hollow drill hole are drilled and an anchor nail is placed in a fracture internal fixation operation, cooling water can be injected to cool a drill bit of the hollow drill, irreversible damage to sclerotin caused by overheat of the drill bit is prevented, and using is safer.

Description

Technical Field

[0001] The utility model relates to the field of orthopedic instruments, in particular to a device for positioning the direction of Kirschner wires, hollow drill holes and anchor insertion. Background Art

[0002] Fractures are the most common orthopedic disease and can occur in all age groups and in all parts of the body. In life, when one or more bones in the body are subjected to direct violence, indirect violence, or cumulative strain, fractures will occur. Symptoms include pain, deformation of the affected area, fever, and in severe cases, the patient may suffer from shock. Ligament and joint injuries also occur frequently.

[0003] After fractures, ligament and joint injuries occur, mild cases can be treated conservatively, and then some patients may need surgical treatment. If not treated in time, it is easy to cause hemorrhagic shock, neurovascular injury, malformation, joint instability and traumatic arthritis. The treatment of fractures includes reduction, fixation and functional exercise, among which intraoperative reduction and fixation requires fixation by Kirschner wires and the like. During ligament repair, the establishment of bone tunnels also requires Kirschner wires and hollow drills to drill holes. Whether using Kirschner wires to drive into fracture blocks for fixation, or using hollow drills to drill holes to establish a nail plate internal fixation system, the direction of the bone block fixation is determined as needed and the internal fixation channel is established along this direction. How to accurately control the entrance, exit and direction of the Kirschner wire, hollow drill and anchor when inserting the Kirschner wire, hollow drill bit and anchor, and avoid damaging blood vessels and nerves and repeated drilling to cause bone loss or even fractures, and how to solve the problem of generating a lot of heat when the hollow drill bit drills holes to establish the internal fixation channel are currently urgent problems to be solved. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a device for positioning the direction of Kirschner wire, hollow drill drilling and anchor insertion. The device can accurately position the Kirschner wire, hollow drill drilling and anchor insertion during fracture internal fixation surgery, and can determine the entrance, exit and direction of the Kirschner wire, hollow drill and anchor, avoid damaging blood vessels and nerves and repeated drilling to cause bone loss or even fracture, shorten the operation time, make the operation more accurate and reliable, and avoid repeated fluoroscopy during surgery to shorten the operation time, save costs, and reduce unnecessary radiation damage; the device can inject cooling water to cool the hollow drill bit to prevent the drill bit from overheating and causing irreversible damage to the bone, making it safer to use.

[0005] In order to achieve the above technical effects, the utility model is implemented through the following technical solutions:

[0006] A device for positioning the direction of drilling and anchor insertion of a Kirschner wire and a hollow drill, comprising a main operating sleeve, a distal locator, a proximal positioning sleeve, and a depth measuring tube, wherein the main operating sleeve and the proximal positioning sleeve are fixedly connected via a first connecting tube and a second connecting tube, the first connecting tube is connected to the main operating sleeve and the proximal positioning sleeve, and the second connecting tube is also connected to the main operating sleeve and the proximal positioning sleeve, the distal locator is inserted into the main operating sleeve and can be slidably adjusted to the distal end or the proximal end in the lumen of the main operating sleeve, a threaded locking rod is threadedly connected to the main operating sleeve to lock the distal locator on the main operating sleeve, a sliding adjustment knob is hinged at the front end of the main operating sleeve, and the distal locator is connected to the main operating sleeve. The device extends out from the sliding adjustment knob and is threadedly connected to the sliding adjustment knob. A rotation limiting mechanism is arranged between the main operating sleeve and the distal locator to ensure that when the sliding adjustment knob is rotated, the distal locator can extend or retract in the tube cavity of the main operating sleeve. The depth measuring tube is inserted into the proximal positioning sleeve and is coaxially arranged. The depth measuring tube can slide in the proximal positioning sleeve and be locked on the proximal positioning sleeve by a locking screw. A U-shaped positioning head is arranged at the front end of the distal locator. The front end of the U-shaped positioning head is aligned with the front end of the proximal positioning sleeve. The center line of the proximal positioning sleeve passes through the center of the front end face of the U-shaped positioning head. A water injection joint is arranged at the rear end of the main operating sleeve.

[0007] Furthermore, a bone block measuring scale is fixed to the rear end of the distal locator, the bone block measuring scale extends from the sealing plug at the rear end of the main operation sleeve, and the zero scale line of the bone block measuring scale is aligned with the sealing plug plane.

[0008] Furthermore, the distal locator is composed of a U-shaped positioning head, a threaded sliding section and a bone block measuring ruler, and the U-shaped positioning head, the threaded sliding section and the bone block measuring ruler are all circular rods, and the diameters of the threaded sliding section and the bone block measuring ruler are equal and smaller than the diameter of the U-shaped positioning head, so that a water cooling channel is formed between the threaded sliding section and the inner wall of the main operating sleeve, the surface of the threaded sliding section is provided with a female thread, and the inside of the sliding adjustment knob is provided with a male thread, and the surface of the threaded sliding section is provided with a stop groove on one side or on both symmetrical sides along its length direction, and a corresponding number of stop protrusions are fixed on the inner wall of the main operating tube, and the stop protrusions are inserted into the stop grooves.

[0009] Furthermore, a depth scale is provided on the depth measuring tube, and a zero scale line of the depth scale is flush with the rear end surface of the proximal positioning sleeve.

[0010] Furthermore, the main operating sleeve, the distal locator, the proximal positioning sleeve, and the depth measuring tube are all made of stainless steel.

[0011] The beneficial effects of the utility model are as follows: the device can accurately locate the Kirschner wire, hollow drill and anchor during fracture internal fixation surgery, and can determine the entrance, exit and direction of the Kirschner wire, hollow drill and anchor, avoiding damage to blood vessels and nerves and repeated drilling to cause bone loss or even fracture, shortening the operation time, making the operation more accurate and reliable, and avoiding repeated fluoroscopy during the operation to shorten the operation time, save costs, and reduce unnecessary radiation damage; the device can inject cooling water to cool the hollow drill bit to prevent the drill bit from overheating and causing irreversible damage to the bone, making it safer to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are 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 these drawings without creative work.

[0013] Figure 1 It is a schematic diagram of the overall structure of a device for positioning the direction of Kirschner wire, hollow drill drilling and anchor insertion;

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of a Kirschner wire, a hollow drill drilling hole and an anchor insertion direction positioning device;

[0015] Figure 3 It is a schematic diagram of the use status of the Kirschner wire, the hollow drill drilling and the anchor insertion direction positioning device.

[0016] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0017] 1-main operating sleeve, 2-distal positioner, 3-sliding adjustment knob, 4-proximal positioning sleeve, 5-depth measuring tube, 6-locking screw, 7-clamping sleeve, 11-water injection joint, 12-first connecting tube, 13-second connecting tube, 14-sealing plug, 15-threaded locking rod, 16-anti-rotation protrusion, 21-U-shaped positioning head, 22-positioning distal section, 23-bone block measuring scale, 24-threaded sliding section, 41-support column, 42-flow chamber, 241-anti-rotation groove. DETAILED DESCRIPTION

[0018] 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.

[0019] like Figure 1-2 As shown, a device for positioning the direction of drilling and anchor insertion of a Kirschner wire and a hollow drill comprises a main operating sleeve 1, a distal locator 2, a proximal positioning sleeve 4, and a depth measuring tube 5. The main operating sleeve 1 is fixedly connected to the proximal positioning sleeve 4 through a first connecting tube 12 and a second connecting tube 13. The first connecting tube is connected to the main operating sleeve and the proximal positioning sleeve, and the second connecting tube is also connected to the main operating sleeve and the proximal positioning sleeve. The distal locator is inserted into the main operating sleeve and can be slidably adjusted to the distal or proximal end in the lumen of the main operating sleeve. A threaded locking rod 15 is threadedly connected to the main operating sleeve 1 to lock the distal locator 2 on the main operating sleeve 1. A sliding adjustment knob 3 is hinged at the front end of the main operating sleeve 1. The distal locator 2 It extends out from the sliding adjustment knob 3 and is threadedly connected to the sliding adjustment knob 3. A rotation limiting mechanism is arranged between the main operating sleeve 1 and the distal locator 2 to ensure that when the sliding adjustment knob is rotated, the distal locator 2 can extend or retract in the tubular cavity of the main operating sleeve 1. The depth measuring tube 5 is inserted into the proximal positioning sleeve 4 and is coaxially arranged. The depth measuring tube 5 can slide in the proximal positioning sleeve 4 and be locked on the proximal positioning sleeve 4 by a locking screw 6. A U-shaped positioning head 21 is arranged at the front end of the distal locator 2. The front end of the U-shaped positioning head 21 is aligned with the front end of the proximal positioning sleeve. The center line of the proximal positioning sleeve 4 passes through the positioning distal section 22 of the U-shaped positioning head 21. A water injection joint 11 is arranged at the rear end of the main operating sleeve 1.

[0020] A bone block measuring scale 23 is fixed to the rear end of the distal locator 2. The bone block measuring scale 23 extends from the sealing plug 14 at the rear end of the main operation sleeve 1. The zero scale line of the bone block measuring scale 23 is aligned with the sealing plug plane.

[0021] The distal locator 2 is composed of a U-shaped positioning head 21, a threaded sliding section 24 and a bone block measuring ruler 23. The U-shaped positioning head 21, the threaded sliding section 24 and the bone block measuring ruler 23 are all circular rods. The diameters of the threaded sliding section 24 and the bone block measuring ruler 23 are equal and smaller than the diameter of the U-shaped positioning head 21, so that a water cooling channel 42 is formed between the threaded sliding section 24 and the inner wall of the main operating sleeve 1. The surface of the threaded sliding section 24 is provided with a female thread, and the interior of the sliding adjustment knob is provided with a male thread. The surface of the threaded sliding section 24 is provided with anti-rotation grooves 241 on both sides along its length direction. Two anti-rotation protrusions 14 are fixed on the inner wall of the main operating tube, and the anti-rotation protrusions are inserted into the anti-rotation grooves.

[0022] In this embodiment, the depth measuring tube 5 is provided with a depth scale, and the zero scale line of the depth scale is flush with the rear end surface of the proximal positioning sleeve.

[0023] In this embodiment, the main operation sleeve 1, the distal locator 2, the proximal positioning sleeve 4, and the depth measuring tube 5 are all made of stainless steel for easy reuse after disinfection.

[0024] The specific application of this device is: Figure 3 As shown, when the sliding adjustment knob 3 at the front end of the main operating sleeve 1 is rotated, the distal locator 2 threadedly connected thereto will extend from the front end of the main operating sleeve 1 under the limit of the anti-rotation protrusion 14. When the distal locator 2 is extended, the bone block measuring ruler at its rear end will enter the main operating sleeve 1, and the bone block will be clamped between the positioning distal end section of the U-shaped positioning head and the front end of the proximal positioning sleeve 4. At this time, the thickness of the bone block can be read according to the bone block measuring ruler; then, according to the approach direction, entry point and exit point determined on the bone block, the distal positioning section end of the distal locator 2 is held against the exit point, and the front end of the proximal positioning sleeve 4 is held against the entry point, and the threaded locking rod 15 is tightened. At this time, the proximal positioning sleeve 4 and the distal positioning section 22 are locked. After the internal fixation channel is determined, the Kirschner wire or drill bit is passed through the depth measuring tube 5 until its front end is against the entrance of the bone block, and then the clamping sleeve is inserted into the depth measuring tube to fix the Kirschner wire or drill bit in the lumen of the depth measuring tube, and the Kirschner wire or drill bit is driven in by a bone hammer to connect with the bone drill for drilling. During the process of driving the Kirschner wire and drilling the drill bit, the depth measuring tube moves together with the Kirschner wire and drill bit to display the depth of the Kirschner wire and drilling. When the drill bit is drilling, cooling water can be injected through the water injection joint 11, and the cooling water will flow into the proximal positioning sleeve 4 from the first connecting tube and the second connecting tube respectively, and flow out from the front end of the proximal positioning sleeve 4 to cool the drill bit to prevent the temperature from rising sharply and damaging the bone.

[0025] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", 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 utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A device for positioning the direction of Kirschner wire, hollow drill drilling and anchor placement, characterized in that: The invention comprises a main operation sleeve, a distal locator, a proximal positioning sleeve, and a depth measuring tube. The main operation sleeve and the proximal positioning sleeve are fixedly connected through a first connecting tube and a second connecting tube. The first connecting tube is connected with the main operation sleeve and the proximal positioning sleeve, and the second connecting tube is also connected with the main operation sleeve and the proximal positioning sleeve. The distal locator is inserted into the main operation sleeve and can be slidably adjusted toward the distal end or the proximal end in the lumen of the main operation sleeve. A threaded locking rod is threadedly connected to the main operation sleeve to lock the distal locator on the main operation sleeve. A sliding adjustment knob is hinged at the front end of the main operation sleeve, and the distal locator extends out from the sliding adjustment knob. and is threadedly connected to the sliding adjustment knob. A rotation limiting mechanism is arranged between the main operating sleeve and the distal locator to ensure that when the sliding adjustment knob is rotated, the distal locator can extend or retract in the lumen of the main operating sleeve. The depth measuring tube is inserted into the proximal positioning sleeve and is coaxially arranged. The depth measuring tube can slide in the proximal positioning sleeve and be locked on the proximal positioning sleeve by a locking screw. A U-shaped positioning head is arranged at the front end of the distal locator. The front end of the U-shaped positioning head is aligned with the front end of the proximal positioning sleeve. The center line of the proximal positioning sleeve passes through the center of the front end face of the U-shaped positioning head. A water injection joint is arranged at the rear end of the main operating sleeve.

2. A device for positioning the direction of Kirschner wire, hollow drill and anchor placement according to claim 1, characterized in that: A bone block measuring scale is fixed at the rear end of the distal locator. The bone block measuring scale extends from the sealing plug at the rear end of the main operation sleeve. The zero scale line of the bone block measuring scale is aligned with the plane of the sealing plug.

3. A device for positioning the direction of Kirschner wire, hollow drill and anchor placement according to claim 1 or 2, characterized in that: The distal locator consists of a U-shaped positioning head, a threaded sliding section and a bone block measuring ruler. The U-shaped positioning head, the threaded sliding section and the bone block measuring ruler are all circular rods. The diameters of the threaded sliding section and the bone block measuring ruler are equal and smaller than the diameter of the U-shaped positioning head, so that a water cooling channel is formed between the threaded sliding section and the inner wall of the main operating sleeve. The surface of the threaded sliding section is provided with a female thread, and the interior of the sliding adjustment knob is provided with a male thread. The surface of the threaded sliding section is provided with a stop groove on one side or on both symmetrical sides along its length direction, and a corresponding number of stop protrusions are fixed on the inner wall of the main operating tube, and the stop protrusions are inserted into the stop grooves.

4. A device for positioning the direction of Kirschner wire, hollow drill and anchor placement according to claim 3, characterized in that: The depth measuring tube is provided with a depth scale, and the zero scale line of the depth scale is flush with the rear end surface of the proximal positioning sleeve.

5. A device for positioning the direction of Kirschner wire, hollow drill and anchor placement according to claim 4, characterized in that: The main operating sleeve, the distal locator, the proximal positioning sleeve and the depth measuring tube are all made of stainless steel.

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