A method and device for implanting interlocking intramedullary nails

Abstract

The present invention relates to an intramedullary nail interlocking nail implantation method and device, the intramedullary nail interlocking nail implantation method comprising: obtaining a virtual model, wherein the virtual model is consistent with a target object; obtaining the position of the target object so that the virtual model and the target object are basically overlapped; obtaining the positioning information of the target object so that the virtual model and the target object are accurately overlapped, so that the visualization of the corresponding approach channel can be realized, and the placement of the interlocking nail can be directly operated by vision; the intramedullary nail interlocking nail implantation device comprises a positioning handle and a virtual imaging device; the positioning handle is fixed to the intramedullary nail, and a positioning matching device is provided at the other end of the positioning handle; the virtual imaging device is a head-mounted virtual imaging display, which can display the position of the positioning handle and the intramedullary nail, and a plurality of virtual combination models of the positioning handle and the intramedullary nail are provided in the database thereof for calling during surgical operation, which can be matched with the intramedullary nail in reality with high precision, so as to facilitate the approach positioning of the interlocking nail.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a method and a device for implanting an intramedullary interlocking nail. Background Art

[0002] At present, intramedullary nails are commonly used clinically to fix long bone fractures. The safe and accurate implantation of intramedullary nail interlocking nails is the key to ensure the success of the operation. The previous method mainly used a rigid positioning device external to the main nail of the intramedullary nail to locate the distal and proximal interlocking nail implantation channels. This method has many joints between the main nail and the external positioning device, and the relative position may change during the operation, resulting in the failure of the interlocking nail positioning. Once this traditional positioning method fails to place the nail, the surgeon can only rely on repeated fluoroscopy of the X-ray fluoroscopy machine to locate the interlocking nail hole, which will extend the operation time indefinitely and increase the radiation dose, causing radiation damage to the patient and the surgeon. If the interlocking nail fails to be implanted or is not locked into the main nail of the intramedullary nail, it will seriously affect the firmness of the intramedullary nail fixation, and even cause complications such as fracture displacement again, malformation or non-union.

[0003] Chinese patent application: CN208677556U discloses a tibial intramedullary nail aiming device, which belongs to the field of surgical instruments for orthopedic implants, and aims to provide a tibial intramedullary nail aiming device that is convenient for aligning the locking nail with the locking hole on the intramedullary nail, so as to solve the problem that the intramedullary nail is difficult to fix. The key points of its technical solution are as follows: it includes an intramedullary nail aiming device and a handle, and a conversion bracket is provided at the end of the handle away from the intramedullary nail; the intramedullary nail aiming device includes a proximal aiming frame and a distal aiming frame, and the distal aiming frame includes an aiming rod and a transverse bracket, and the aiming rod is connected to the handle through a conversion bracket; the proximal aiming frame includes a double cross-nail aiming frame and a cross-nail aiming frame, and the double cross-nail aiming frame is fixedly connected to the handle through a conversion bracket, and the cross-nail aiming frame is fixedly connected to the handle. This application is suitable for aiming tibial intramedullary nails, but it still provides a traditional mechanical positioning method, which is cumbersome to operate, has no visibility, and is inefficient.

[0004] In summary, there is an urgent need for an intramedullary nail interlocking nail implantation method and device that has high stability, good safety, can realize visualization of the corresponding access channel during intramedullary nail fixation, can be directly operated by vision, and has high positioning accuracy. Summary of the invention

[0005] The purpose of the present invention is to provide an intramedullary nail interlocking nail implantation method with high stability and good safety, capable of realizing visualization of corresponding access channels when fixing intramedullary nails, and providing direct visual operation with high positioning accuracy.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A method for implanting an intramedullary interlocking nail comprises: obtaining a virtual model, wherein the virtual model is consistent with a target object; obtaining the position of the target object so that the virtual model and the target object are substantially overlapped; and obtaining the positioning information of the target object so that the virtual model and the target object are accurately overlapped.

[0008] As a preferred technical solution, the virtual model is a positioning handle and intramedullary nail combination model pre-stored in a database; the target object is a positioning handle and intramedullary nail combination actually used, and the virtual model corresponds to the target object.

[0009] As a preferred technical solution, obtaining the virtual model includes: a user uses a virtual imaging device to select a target object virtual model that matches the target object from a database.

[0010] As a preferred technical solution, obtaining the target position so that the virtual model and the target object are substantially overlapped includes: adjusting the position of the virtual model, such as the virtual imaging device recognizes a corresponding gesture and moves the virtual model until it is substantially overlapped with the target object.

[0011] As a preferred technical solution, obtaining the target object positioning identification information so that the virtual model and the target object are accurately overlapped includes: the virtual imaging device obtains the target object positioning information through the target object positioning identification mark, so that the virtual model and the target object are accurately overlapped, and the overlap tracking is maintained.

[0012] Another object of the present invention is to provide an intramedullary nail interlocking nail implantation device with high stability, good safety, and the ability to visualize the corresponding access channel when fixing the intramedullary nail, which can be directly operated by vision and has high positioning accuracy.

[0013] To achieve the above object, the technical solution adopted by the present invention is:

[0014] An intramedullary nail interlocking nail implantation device comprises a positioning handle and a virtual imaging device; the positioning handle is connected to the intramedullary nail, the positioning handle is provided with a positioning matching device, the positioning matching device is provided with a plurality of positioning angles, and the virtual imaging device identifies the positioning angles.

[0015] As a preferred technical solution, the positioning and matching device is a cube frame with eight positioning corners.

[0016] As a preferred technical solution, the positioning pairing device is detachably connected to the positioning handle.

[0017] As a preferred technical solution, the positioning pairing device is provided with a positioning rod, and the positioning rod is connected to the positioning handle through a bolt.

[0018] As a preferred technical solution, the virtual imaging device is a head-mounted virtual imaging display, which can display the positions of the positioning handle and the intramedullary nail.

[0019] The advantages of the present invention are:

[0020] 1. The intramedullary nail interlocking nail implantation method of the present invention can avoid the situation where there are too many connection joints between the main intramedullary nail and the external positioning device, which may cause the relative position to change during the operation and lead to the failure of the interlocking nail positioning. It can also avoid relying on repeated fluoroscopy of an X-ray machine to locate the interlocking nail hole, which leads to an indefinite extension of the operation time and an increase in the amount of radiation, causing the risk of radiation damage to patients and surgeons.

[0021] 2. The intramedullary nail interlocking nail implantation device of the present invention includes a positioning handle and a virtual imaging device. The positioning handle is provided with a positioning matching device, and the positioning matching device has a positioning angle for providing precise matching. The virtual imaging device can identify the positioning matching device, so that the virtual model is matched and positioned with the positioning handle and the intramedullary nail connected to the positioning handle, so that the corresponding access channel can be visualized. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Attached Figure 1 The present invention is a schematic flow chart of a method for implanting an intramedullary interlocking nail.

[0023] Attached Figure 2 It is a stereoscopic schematic diagram of an intramedullary nail interlocking nail implantation device of the present invention.

[0024] Attached Figure 3 The present invention is a schematic diagram of a positioning handle of an intramedullary nail interlocking nail implantation device.

[0025] Attached Figure 4 It is a schematic diagram of a positioning handle of another intramedullary nail interlocking nail implantation device of the present invention. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0027] The reference numerals and components involved in the drawings are as follows:

[0028] 1. Positioning handle 2. Virtual imaging device 3. Intramedullary nail

[0029] 11. Positioning pairing device 12. Positioning angle 13. Positioning rod

[0030] Example 1

[0031] Please see attached Figure 1 , attached Figure 1 The present invention is a flow chart of a method for implanting an intramedullary nail interlocking nail. The method for implanting an intramedullary nail interlocking nail comprises at least the following steps S100-S104:

[0032] Step S100: obtaining a virtual model, wherein the virtual model is consistent with the target object;

[0033] The user uses a virtual imaging device to select a virtual model of a target object that matches the target object from a database; the virtual model is a positioning handle and intramedullary nail combination model pre-stored in the database; the target object is a positioning handle and intramedullary nail combination that is actually used, and the virtual model corresponds to and matches the target object;

[0034] In some embodiments, a virtual model database is established, and the database should at least contain an applicable intramedullary nail and a positioning handle combination, that is, a combination of a fixed intramedullary nail and a positioning handle. Since the intramedullary nail is located inside the bone marrow during surgery, a positioning handle is required to assist in positioning, which is equivalent to a handle in mechanical positioning. It should be understood that the virtual model can be constructed by itself, such as three-dimensional modeling, or related model data can be imported and updated;

[0035] Step S102: obtaining the position of the target object so that the virtual model and the target object substantially overlap;

[0036] The user adjusts the position of the virtual model so that it basically overlaps with the target object in reality;

[0037] In some embodiments, the virtual model can be moved to substantially coincide with the target object by recognizing the corresponding gesture through a virtual imaging device, and the virtual imaging device projects the virtual model into the real world, so that the target object is visualized through the virtual model, such as Hololens glasses and other devices;

[0038] Step S104: obtaining the positioning information of the target object so that the virtual model and the target object are accurately overlapped;

[0039] The virtual imaging device obtains the target object positioning information through the target object positioning identification mark, so that the virtual model and the target object are accurately overlapped and the overlap tracking is maintained;

[0040] In some embodiments, by setting a target positioning identification mark on the target, such as a positioning matching device with a plurality of positioning angles, the positioning angles provided can be used by the virtual imaging device to accurately identify and match, obtain the target positioning information, so that the virtual model and the target always maintain precise overlap and lock their spatial position.

[0041] It should be noted that: the intramedullary nail interlocking nail implantation method of the present invention uses virtual imaging technology to make the virtual model of the target object match and overlap with the position of the target object, so that the intramedullary nail inserted into the patient's bone marrow is visualized, so that medical workers can directly observe the interlocking nail access channel on the intramedullary nail, and when fixing the intramedullary nail, there is no need to use complicated mechanical positioning equipment. A handheld electric drill equipped with a drill bit can be directly drilled into the bone along the position of the virtual interlocking nail hole according to the visual channel, through the nail hole until it penetrates the contralateral bone cortex to complete the operation; it can effectively avoid the situation where there are many connection joints between the main nail of the intramedullary nail and the external positioning device, the relative position changes during the operation, and the failure of the interlocking nail position positioning occurs, and it can also avoid relying on repeated fluoroscopy of the X-ray fluoroscopy machine to locate the interlocking nail hole, resulting in an unlimited extension of the operation time and an increase in the amount of radiation radiation, causing the risk of radiation damage to patients and surgeons.

[0042] Example 2

[0043] Please see attached Figure 2 , Attachment Figure 3 , attached Figure 2 is a three-dimensional schematic diagram of an intramedullary nail interlocking nail implantation device of the present invention, with Figure 3 This is a schematic diagram of a positioning handle of an intramedullary nail interlocking nail implantation device of the present invention. An intramedullary nail interlocking nail implantation method and device, comprising a positioning handle 1 and a virtual imaging device 2; the positioning handle 1 is an L-shaped rigid structure, one end of which is provided with a bolt hole, and is fixed to the intramedullary nail 3 by bolts; the other end of the positioning handle 1 is provided with a positioning matching device 11, and the positioning matching device 11 is a cube frame with eight positioning angles 12 for positioning. It should be noted that the positioning matching device 11 can also be a prism, a cone, etc.; the virtual imaging device 2 is a head-mounted virtual imaging display, which can display the position of the positioning handle 1 and the intramedullary nail 3, such as a Hololens device, and the virtual imaging device 2 has a database with a variety of virtual combination models of the positioning handle 1 and the intramedullary nail 3 for calling during surgical operations, and the virtual model can be controlled by gesture control. The virtual imaging device 2 can identify the positioning angle 12 to ensure the matching accuracy with the intramedullary nail 3 in reality, and facilitate the approach positioning of the interlocking nail.

[0044] The use of the present invention is as follows: the positioning handle 1 is connected to the intramedullary nail 3, and during surgery, such as long shaft bone fracture surgery, the main nail of the intramedullary nail 3 connected to the positioning handle 1 is inserted into the medullary cavity; the surgeon wears a virtual imaging device 2, such as Hololens glasses. The virtual model of the currently used intramedullary nail 3 and the positioning handle 1 stored in the database can be retrieved through gesture operation, and the virtual model is moved in space through gesture control to match the spatial position between the real positioning handle 1 and the virtual positioning handle 1. The virtual imaging device 2 can identify the positioning angle 12 on the positioning pairing device 11, and automatically and instantly adjust the accuracy. After the matching is completed, the intramedullary nail 3 and the positioning handle 1 in reality are kept stable, and the spatial position of the virtual model is locked; the surgeon observes the spatial position of the interlocking nail hole on the virtual model, holds an electric drill equipped with a drill bit and drills into the bone along the position of the virtual interlocking nail hole, passes through the nail hole until penetrating the opposite side bone cortex, measures the length of the nail hole, screws in the interlocking nail of the corresponding length, and completes the subsequent surgical operation.

[0045] It should be noted that: the intramedullary nail interlocking nail implantation method and device of the present invention include a positioning handle 1 and a virtual imaging device 2, the positioning handle 1 is provided with a positioning matching device 11, the positioning matching device 11 has a positioning angle 12, the virtual imaging device 2 can identify the positioning matching device 11, and can call the corresponding virtual model in the database to match and locate the positioning handle 1 and the intramedullary nail 3 connected to the positioning handle 1, and display its position information in a real environment to directly expose the access channel of the interlocking nail, so that the surgeon can drill the interlocking nail along the position of the virtual interlocking nail hole by observation; the intramedullary nail interlocking nail implantation method and device of the present invention can avoid the situation that there are many connection joints between the main nail of the intramedullary nail 3 and the external positioning device, the relative position changes during the operation, and the failure of the interlocking nail position positioning occurs, and it can also avoid relying on repeated fluoroscopy of an X-ray fluoroscopy machine to locate the interlocking nail hole, resulting in an unlimited extension of the operation time and an increase in the amount of radiation, causing the risk of radiation damage to patients and surgeons.

[0046] Example 3

[0047] Please see attached Figure 4 , attached Figure 4This is a schematic diagram of the positioning handle of another intramedullary nail interlocking nail implantation device of the present invention. This embodiment is basically the same as the embodiment 1, and the difference is that the positioning matching device 11 is detachably connected to the positioning handle 1, and the positioning matching device 11 is provided with a positioning rod 13, and the positioning rod 13 is connected to the positioning handle 1 by a bolt, that is, the positioning handle 1 can be an existing intramedullary nail 3 handle, and the positioning matching device 11 is connected by the original positioning hole connected to the positioning device on its handle, and the virtual imaging device 2 can call its virtual model, such as firstly virtually modeling the corresponding combination of the positioning handle 1, the positioning matching device 11 and the intramedullary nail 3, and storing them in the database for the virtual imaging device 2 to call, which has the advantage of effectively utilizing existing equipment, reducing the use cost, and increasing the application flexibility of the intramedullary nail interlocking nail implantation method and device.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the principle of the present invention. These improvements and supplements should also be regarded as the scope of protection of the present invention.

Claims

1. An intramedullary nail interlocking nail implantation device, characterized in that: It includes a positioning handle and a virtual imaging device; the positioning handle is connected to the intramedullary nail, the positioning handle is provided with a positioning matching device, the positioning matching device is provided with a plurality of positioning angles, the virtual imaging device identifies the positioning angles, The steps of the intramedullary nail interlocking nail implantation method are as follows: Acquire a virtual model, wherein the virtual model is consistent with the target object; the virtual model is a positioning handle and intramedullary nail combination model pre-stored in a database; the target object is a positioning handle and intramedullary nail combination actually used, and the virtual model corresponds to and matches the target object; Obtaining the position of the target object so that the virtual model and the target object substantially coincide with each other; The positioning information of the target object is obtained so that the virtual model and the target object are accurately overlapped; the virtual imaging device obtains the positioning information of the target object through the positioning matching device, so that the virtual model and the target object always maintain accurate overlap and lock their spatial position.

2. The intramedullary nail interlocking nail implantation device according to claim 1, characterized in that: The positioning and matching device is a cubic frame with eight positioning corners.

3. The intramedullary nail interlocking nail implantation device according to claim 2, characterized in that: The positioning matching device is detachably connected to the positioning handle.

4. The intramedullary nail interlocking nail implantation device according to claim 3, characterized in that: The positioning matching device is provided with a positioning rod, and the positioning rod is connected to the positioning handle through a bolt.

5. The intramedullary nail interlocking nail implantation device according to claim 4, characterized in that: The virtual imaging device is a head-mounted virtual imaging display, which can display the positions of the positioning handle and the intramedullary nail.

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