Minimally invasive bone circumcision drill kit and use method

Abstract

The invention discloses a minimally invasive bone circumcision drill kit and a using method.The minimally invasive bone circumcision drill kit comprises a tapper and a bone fetcher, an annular drill and a centering drill bit which are coaxial are arranged at the working end of the tapper, and the centering drill bit is arranged in the center of the annular drill; the front end of the centering drill bit protrudes out of the end face of a cutting edge of the annular drill; and the diameter of the bone taking rod at the working end of the bone taking device is smaller than that of the centering drill bit. According to the invention, the annular drill with the centering drill bit is adopted to carry out trepanning on the outer-layer hard bone at the bone taking position, so that the outer-layer hard bone sheet can be completely taken down and then backfilled, and the rapid recovery of a wound is facilitated.

Description

Technical Field

[0001] This invention relates to the field of orthopedic surgical tools, and more particularly to a minimally invasive bone circumcision drill kit and its method of use. Background Technology

[0002] Bone retrieval surgery involves two steps: drilling the bone harvesting site and harvesting the bone. Currently, drilling is often done using an opening device. However, these devices only have drilling capabilities; during drilling, the outer layer of hard bone at the harvesting site is often fragmented by the high-speed rotating cutting edge of the device, resulting in waste. After opening the hole, the inner layer of bone tissue is harvested for transplantation. Furthermore, before suturing the bone opening after harvesting, non-prosthetic material must be backfilled to seal the hole, which hinders rapid wound healing, is cumbersome, and carries a high risk of infection.

[0003] If the outer layer of hard bone is cut off and removed entirely, and then the removed bone is refilled into the bone harvesting hole after the surgery, it will facilitate rapid wound healing and reduce the risk of infection.

[0004] To solve the above problems, it is necessary to develop a minimally invasive bone trephine drill kit and its usage method. Summary of the Invention

[0005] The purpose of this invention is to provide a minimally invasive bone circumcision drill kit and its usage method. The circumcision drill with a centering drill bit is used to make an opening in the outer layer of hard bone at the bone harvesting site, which can completely remove the outer layer of hard bone and then backfill it, which is conducive to the rapid recovery of the wound.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] The present invention relates to a minimally invasive bone circumcision drill kit, comprising: a hole opener and a bone harvester. The working end of the hole opener is provided with a coaxial circumferential drill and a centering drill bit. The centering drill bit is located at the center of the circumferential drill, and the front end of the centering drill bit protrudes from the cutting edge end face of the circumferential drill. The diameter of the bone harvesting rod at the working end of the bone harvester is smaller than the diameter of the centering drill bit.

[0008] Furthermore, the circumferential drill is welded to the positioning platform at the root of the centering drill bit.

[0009] Furthermore, a limit ring is provided at the root of the outer wall of the circumferential drill.

[0010] Furthermore, the ring drill has side holes on its sidewall, and a plurality of side holes are evenly distributed along the circumference of the sidewall of the ring drill.

[0011] Furthermore, it also includes a bone storage device, which is a sleeve shape with a base. The sleeve is provided with a cylindrical bone storage cavity with a top opening for temporarily storing large pieces of bone. The inner diameter of the bone storage cavity is larger than the inner diameter of the circumferential drill.

[0012] Furthermore, a bottom hole is centrally located on the base of the bone storage device, the bottom hole being connected to the bone storage cavity and having an inner diameter larger than the diameter of the bone harvesting rod at the working end of the bone harvester.

[0013] Furthermore, it also includes a top bone device, which includes a pressure plate and top bone legs. The pressure plate is in the shape of a long strip, and an opening groove is centrally formed on one long side wall of the pressure plate. The width of the opening groove is greater than the diameter of the drill rod of the hole opener. Two top bone legs are symmetrically arranged on both sides of the bottom surface of the opening groove. Two top holes are symmetrically formed on the top surface of the annular drill, and the top bone legs can be inserted into the top holes.

[0014] Furthermore, the length of the top bone leg is greater than the depth of the circumferential drill.

[0015] Furthermore, the root portion of the top bone is integrally injection molded and connected to the pressure plate.

[0016] This invention also discloses a method for using a minimally invasive bone circumcision drill kit, which uses a circumcision drill with a centering drill bit to make a hole in the outer layer of hard bone at the bone harvesting site, and then completely removes the outer layer of hard bone fragments for backfilling.

[0017] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0018] This invention relates to a minimally invasive bone circumcision drill kit. By using a circumferential drill and a centering drill at the working end of the drill bit, an outer layer of hard bone with a central hole can be machined at the bone harvesting site. A bone harvesting tool is then inserted into the central hole and pried to remove the entire outer layer of hard bone from the harvesting site. This minimally invasive bone circumcision drill kit uses a circumferential drill with a centering drill bit to create an opening in the outer layer of hard bone at the bone harvesting site, allowing for complete removal of the outer layer of hard bone and subsequent backfilling, which promotes rapid wound healing.

[0019] Furthermore, by adding a limiting ring to the root of the circumferential drill, the drilling depth can be limited to avoid excessive cutting depth. Multiple side holes evenly distributed around the sidewall of the circumferential drill prevent air resistance during drilling. A bone storage device allows for temporary storage of the outer hard bone fragments; a bottom hole on the base of the storage device allows for the use of a bone retrieval tool to eject the stored outer hard bone fragments, making retrieval more convenient. Adding a bone ejector device allows for the ejection of the outer hard bone fragments embedded in the circumferential drill, improving bone retrieval efficiency. Using two symmetrically positioned bone ejector legs to simultaneously contact the top surface of the outer hard bone fragment for uniform ejection prevents the outer hard bone fragment from being crushed or jammed by the centering drill bit during ejection, ensuring the integrity of the outer hard bone fragment during the ejection process.

[0020] The present invention relates to a minimally invasive bone circumcision drill kit. A centering drill bit is used to first machine a central hole in the outer layer of hard bone. This reduces vibration and chatter during the circumcision process, ensuring a neat, circumferential cut and making the circumcision process safer. Furthermore, it facilitates the insertion of the bone harvesting rod for prying during bone retrieval. This allows for the relatively complete removal of the outer layer of hard bone from the harvest site for backfilling, avoiding the waste caused by direct cutting and drilling. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the front view structure of the minimally invasive bone circumcision drill kit of the present invention;

[0023] Figure 2 This is a three-dimensional structural schematic diagram of the minimally invasive bone circumcision drill kit of the present invention;

[0024] Figure 3 This is a three-dimensional structural diagram of the hole opener in this invention;

[0025] Figure 4 This is a schematic diagram of the main sectional view of the hole opener in this invention;

[0026] Figure 5 This is a schematic diagram of the main sectional view of the bone storage device in this invention;

[0027] Figure 6 This is a three-dimensional structural diagram of the bone harvesting device in this invention;

[0028] Figure 7 This is a three-dimensional structural diagram of the parietal bone device in this invention.

[0029] Explanation of reference numerals in the attached drawings: 1. Hole opener; 101. Circular drill; 102. Centering drill bit; 103. Connector; 104. Side hole; 105. Top hole; 106. Limiting ring; 2. Bone storage device; 201. Bone storage cavity; 202. Bottom hole; 3. Bone harvester; 301. Handle; 4. Bone apex device; 401. Opening groove; 402. Bone apex leg. Detailed Implementation

[0030] The core of this invention is to provide a minimally invasive bone circumcision drill kit, which uses a circumcision drill with a centering drill bit to make an opening in the outer layer of hard bone at the bone harvesting site. This allows the outer layer of hard bone to be completely removed and then backfilled, which is beneficial for rapid wound recovery.

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] Refer to the attached diagram. Figure 1 This is a schematic diagram of the front view structure of the minimally invasive bone circumcision drill kit of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the minimally invasive bone circumcision drill kit of the present invention; Figure 3 This is a three-dimensional structural diagram of the hole opener in this invention; Figure 4 This is a schematic diagram of the main sectional view of the hole opener in this invention; Figure 5 This is a schematic diagram of the main sectional view of the bone storage device in this invention; Figure 6 This is a three-dimensional structural diagram of the bone harvesting device in this invention; Figure 7 This is a three-dimensional structural diagram of the parietal organ in this invention.

[0034] Example 1

[0035] In one specific implementation, such as Figures 1-6As shown, the minimally invasive bone circumcision drill kit of the present invention includes: a hole opener 1 and a bone harvester 3. The working end of the hole opener 1 is equipped with a coaxial circumferential drill 101 and a centering drill bit 102. The main body of the hole opener 1 is a drill rod, and the other end of the drill rod is a connector 103 mounted on a power tool. The centering drill bit 102 is located at the center of the circumferential drill 101, and the front end of the centering drill bit 102 protrudes from the cutting edge end face of the circumferential drill 101. The cutting edge of the circumferential drill 101 is serrated, and the centering drill bit 102 is shaped like a bone drill. In a specific embodiment, as... Figure 3 and Figure 4 As shown, the specifications of the 101 ring drill are as follows: The specifications of the 102 centering drill bit are as follows: millimeters. Millimeters.

[0036] Specifically, such as Figure 1 , Figure 2 and Figure 6 As shown, the bone harvester 3 is specifically in the form of a screwdriver, including a handle 301 and a bone harvesting rod, the working end of which is a pointed tip. The diameter of the bone harvesting rod at the working end of the bone harvester 3 is smaller than the diameter of the centering drill bit 102. In a specific embodiment, the diameter of the bone harvesting rod is 2.4 mm.

[0037] Specifically, such as Figures 1-3 As shown, the connector 103 is specifically mounted in the form of a hexagonal prism.

[0038] By using the circumferential drill 101 and centering drill bit 102 at the working end of the hole opener 1, an outer layer of hard bone with a central hole can be machined at the bone harvesting site. The bone harvester 3 is then inserted into the central hole and pried to remove the entire outer layer of hard bone from the harvesting site. This invention's minimally invasive bone circumferential drilling kit uses a circumferential drill with a centering drill bit to create a hole in the outer layer of hard bone at the bone harvesting site. This allows for the complete removal of the outer layer of hard bone and subsequent backfilling, facilitating rapid wound healing.

[0039] In one specific implementation of this embodiment, such as Figure 4 As shown, the centering drill bit 102 is integrally formed at the bottom end of the drill rod of the hole opener 1, and the ring drill 101 is welded to the positioning platform at the root of the centering drill bit 102. The entire hole opener 1 is made of medical-grade stainless steel.

[0040] Specifically, such as Figure 3 and Figure 4 As shown, a limiting ring 106 is provided at the root of the outer wall of the circumferential drill 101, and the diameter of the limiting ring 106 is larger than the diameter of the outer cylindrical wall of the circumferential drill 101.

[0041] Specifically, such as Figure 3 and Figure 4As shown, a number of side holes 104 are provided on the side wall of the ring drill 101, and multiple side holes 104 are evenly distributed along the circumference of the side wall of the ring drill 101.

[0042] By adding a limiting ring 106 to the root of the outer wall of the ring drill 101, the drilling depth can be limited to avoid excessive cutting depth; by opening multiple side holes 104 evenly distributed around the side wall of the ring drill 101, air resistance can be avoided during the drilling process.

[0043] In one specific implementation of this embodiment, such as Figure 1 , Figure 2 and Figure 5 As shown, the minimally invasive bone circumcision drill kit of the present invention also includes a bone storage device 2, which is a sleeve shape with a base. The sleeve is provided with a cylindrical bone storage cavity 201 with a top opening for temporary storage of large bone pieces. The inner diameter of the bone storage cavity 201 is larger than the inner diameter of the circumcision drill 101.

[0044] Specifically, such as Figure 1 , Figure 2 and Figure 5 As shown, a bottom hole 202 is centrally located on the base of the bone storage device 2. The bottom hole 202 connects to the bone storage cavity 201 and its inner diameter is larger than the diameter of the bone retrieval rod at the working end of the bone retrieval device 3.

[0045] By adding a bone storage device 2, the outer hard bone fragments can be temporarily stored; by adding a bottom hole 202 on the base of the bone storage device 2, the stored outer hard bone fragments can be pushed out using a bone retrieval device 3, making retrieval more convenient.

[0046] The working process of the minimally invasive bone circumcision drill kit in this embodiment is as follows: During bone harvesting, the connector 103 at the top of the hole opener 1 is first installed onto the drill chuck of the power tool. A hole is drilled at the selected location at the bone harvesting site. The centering drill bit 102 first contacts the bone surface at the harvesting site to complete the drilling of the central hole. Then, the circumferential drill 101 contacts the bone surface to cut the surrounding circumferential suture. When the cutting depth reaches the limiting ring 106, further cutting is impossible, and drilling stops. If the outer layer of hard bone remains on the bone, the surgeon needs to hold the handle 301 of the bone harvester 3 and insert the working end of the bone harvesting rod into the central hole of the outer layer of hard bone, prying it left and right to remove the outer layer of hard bone completely and place it in the bone storage container 2 for temporary storage. Then, the surgeon uses the bone harvesting tool to harvest bone tissue from the inside of the opening as graft material. Before suturing the wound at the bone harvesting site, the outer layer of hard bone is removed from the bone storage container 2, repositioned, and then the wound is sutured.

[0047] Example 2

[0048] During the drilling process using the hole opener 1, the outer layer of hard bone fragments often gets removed and then enters the inner side of the circumferential drill 101. Due to the auxiliary fixing effect of the centering drill bit 102, it is not easy to remove the outer layer of hard bone fragments from the circumferential drill 101 despite repeated bumping and shaking. To overcome the above problems, this embodiment is an improvement on the minimally invasive bone circumferential drilling kit of the present invention, based on the above embodiment 1.

[0049] In one specific implementation, such as Figure 1 , Figure 2 and Figure 7 As shown, the minimally invasive bone resection drill kit of the present invention also includes a bone-electrode 4, which includes a pressure plate and a bone-electrode leg 402. The pressure plate is made of medical-grade PP or POM, and the bone-electrode leg 402 is made of medical-grade stainless steel and integrally injection molded with the pressure plate. The pressure plate is in the shape of a long strip, and an opening groove 401 is centrally formed on one long side wall of the pressure plate. The width and depth of the opening groove 401 are both greater than the diameter of the drill rod of the hole opener 1. Two bone-electrode legs 402 are symmetrically arranged on both sides of the bottom surface of the opening groove 401. Two top holes 105 are symmetrically formed on the top surface of the ring drill 101, and the bone-electrode legs 402 can be inserted into the top holes 105.

[0050] Specifically, such as Figure 1 , Figure 2 and Figure 7 As shown, the length of the parietal leg 402 is greater than the depth of the circumferential drill 101. The outer diameter of the bottom of the circumferential drill 101 is smaller than the inner diameter of the bone storage cavity 201, and the outer diameter of the limiting ring 106 is larger than the inner diameter of the bone storage cavity 201.

[0051] By adding a bone-lifting device 4, the outer hard bone fragment embedded in the circumferential drill 101 can be pushed out, improving the bone extraction efficiency. By using two symmetrically arranged bone-lifting legs 402 to simultaneously contact the top surface of the outer hard bone fragment and push it out with uniform force, the outer hard bone fragment is prevented from being crushed or broken after being jammed by the centering drill bit 102 during the pushing process, thus ensuring the integrity of the outer hard bone fragment during the pushing process.

[0052] In one specific implementation of this embodiment, such as Figure 7 As shown, the pressure plate has top bone legs 402 on both sides of the opening slot 401, and the base of the top bone legs 402 is integrally injection molded to the pressure plate. By injection molding the top bone legs 402 into the pressure plate, they are firmly and reliably installed.

[0053] The working process of the minimally invasive bone resection drill kit in this embodiment is as follows: After drilling, if the outer hard bone fragment is embedded inside the circumferential drill 101, move the opening device 1 directly above the bone storage device 2, and insert the bottom of the circumferential drill 101 coaxially into the bone storage cavity 201. The surgeon holds the bone-lifting device 4 with his other hand, and the opening slot 401 is fitted onto the drill rod of the opening device 1. Observe that the bone-lifting leg 402 is aligned with the top hole 105, and press down on the pressure plate of the bone-lifting device 4. The bone-lifting leg 402 passes through the top hole 105 and enters the inner cavity of the circumferential drill 101. Continue to press down on the pressure plate of the bone-lifting device 4, and the bottom end of the bone-lifting leg 402 contacts the top surface of the outer hard bone fragment. The two symmetrically arranged bone-lifting legs 402 simultaneously contact the top surface of the outer hard bone fragment and push it with uniform force. The outer hard bone fragment falls from the bottom opening of the circumferential drill 101 and enters the bone storage cavity 201 of the bone storage device 2. Remove the top bone device 4. The remaining operations are the same as in Example 1, and will not be repeated here.

[0054] Example 3

[0055] This invention also discloses a method for using a minimally invasive bone circumcision drill kit, which uses a circumcision drill with a centering drill bit to make a hole in the outer layer of hard bone at the bone harvesting site, and then completely removes the outer layer of hard bone fragments for backfilling.

[0056] Using a centering drill bit to first machine a central hole in the outer hard bone reduces vibration and chatter during the circumferential drilling process, ensuring a neat, circumferential cut and making the circumferential cutting process safer. Furthermore, it facilitates the insertion of the bone harvesting rod end for prying during bone removal. The method of using this minimally invasive bone circumferential cutting drill kit allows for the relatively complete removal of the outer hard bone fragment from the bone harvesting site for backfilling, avoiding the waste caused by direct cutting and drilling.

[0057] Furthermore, the minimally invasive bone circumcision drill kit of this invention can be used in two ways: disposable or reused after disinfection.

[0058] In summary, the minimally invasive bone circumcision drill kit of the present invention, through the circumferential drill 101 and centering drill bit 102 at the working end of the hole opener 1, can process an outer layer of hard bone with a central hole at the bone harvesting site. The bone harvester 3 is then inserted into the central hole and pried to remove the entire outer layer of hard bone from the bone harvesting site. This minimally invasive bone circumcision drill kit uses a circumferential drill with a centering drill bit to create a hole in the outer layer of hard bone at the bone harvesting site, allowing for complete removal of the outer layer of hard bone and subsequent backfilling, which is beneficial for rapid wound healing. Furthermore, by adding a limiting ring 106 to the root of the outer wall of the circumferential drill 101, the drilling depth can be limited to avoid excessive cutting depth; and by evenly distributing multiple side holes 104 on the side wall of the circumferential drill 101, air resistance during drilling is avoided. By adding a bone storage device 2, the outer hard bone fragments can be temporarily stored. Adding a bottom hole 202 to the base of the bone storage device 2 allows the bone extractor 3 to push out the stored outer hard bone fragments, making retrieval more convenient. Adding a bone ejector 4 allows the outer hard bone fragments embedded in the circumferential drill 101 to be ejected, improving bone retrieval efficiency. By using two symmetrically arranged bone ejector legs 402 to simultaneously contact the top surface of the outer hard bone fragments for uniform force ejection, the outer hard bone fragments are prevented from being crushed during ejection or from being jammed by the centering drill bit 102, ensuring the integrity of the outer hard bone fragments during ejection.

[0059] The present invention relates to a minimally invasive bone circumcision drill kit. A centering drill bit is used to first machine a central hole in the outer layer of hard bone. This reduces vibration and chatter during the circumcision process, ensuring a neat, circumferential cut and making the circumcision process safer. Furthermore, it facilitates the insertion of the bone harvesting rod for prying during bone retrieval. This allows for the relatively complete removal of the outer layer of hard bone from the harvest site for backfilling, avoiding the waste caused by direct cutting and drilling.

[0060] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0061] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A minimally invasive bone circumcision drill kit, characterized in that, include: The device includes a hole opener (1) and a bone harvester (3). The working end of the hole opener (1) is equipped with a coaxial circumferential drill (101) and a centering drill bit (102). The centering drill bit (102) is located at the center of the circumferential drill (101), and the front end of the centering drill bit (102) protrudes from the cutting edge end face of the circumferential drill (101). The diameter of the bone harvesting rod at the working end of the bone harvester (3) is smaller than the diameter of the centering drill bit (102).

2. The minimally invasive bone circumcision drill kit according to claim 1, characterized in that: The circular drill (101) is welded to the positioning platform at the root of the centering drill bit (102).

3. The minimally invasive bone circumcision drill kit according to claim 2, characterized in that: A limit ring (106) is provided at the root of the outer wall of the ring drill (101).

4. The minimally invasive bone circumcision drill kit according to claim 2, characterized in that: The ring drill (101) has side holes (104) on its side wall, and a plurality of the side holes (104) are evenly distributed along the circumference of the side wall of the ring drill (101).

5. The minimally invasive bone circumcision drill kit according to claim 1, characterized in that: It also includes a bone storage device (2), which is a sleeve shape with a base. The sleeve is provided with a cylindrical bone storage cavity (201) with a top opening for temporary storage of large bone pieces. The inner diameter of the bone storage cavity (201) is larger than the inner diameter of the circumferential drill (101).

6. The minimally invasive bone circumcision drill kit according to claim 5, characterized in that: The base of the bone storage device (2) has a bottom hole (202) in the center. The bottom hole (202) is connected to the bone storage cavity (201) and its inner diameter is larger than the diameter of the bone retrieval rod at the working end of the bone retrieval device (3).

7. The minimally invasive bone circumcision drill kit according to claim 5, characterized in that, It also includes a top bone device (4), which includes a pressure plate and top bone legs (402). The pressure plate is in the shape of a long strip plate. An opening groove (401) is provided in the center of one long side wall of the pressure plate. The width of the opening groove (401) is greater than the diameter of the drill rod of the hole opener (1). Two top bone legs (402) are symmetrically arranged on both sides of the bottom surface of the opening groove (401). Two top holes (105) are symmetrically opened on the top surface of the annular drill (101). The top bone legs (402) can be inserted into the top holes (105).

8. The minimally invasive bone circumcision drill kit according to claim 7, characterized in that: The length of the parietal leg (402) is greater than the depth of the circumferential drill (101).

9. The minimally invasive bone circumcision drill kit according to claim 7, characterized in that: The root of the top bone leg (402) is integrally injection molded and connected to the pressure plate.

10. A method of using a minimally invasive bone circumcision drill kit, characterized in that, A trephine drill with a centering bit was used to make a hole in the outer layer of hard bone at the bone harvesting site. The outer layer of hard bone was then completely removed and backfilled for use.

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