CN221786464U - Annular bone taking device - Google Patents

Abstract

The utility model provides an annular bone removal device, comprising: an arc-shaped base body, on which a through hole is provided which passes through the base body in a radial direction, sliders are respectively arranged on both sides of the through hole, the sliders can be slidably arranged on the base body, and the sliders are provided with bone chisel openings which pass through the base body in a radial direction; a pair of bone chisels, which are respectively arranged in bone chisel openings located at both sides of the through hole, and the chisel heads of the bone chisels are used to face the center of the base body to chisel into both sides of the bone removal block and intersect with the chisel head of the other bone chisel, so as to cut off the bone on both sides of the bone removal block; a bone removal rod, which is rotatably arranged in the through hole, and one end of the bone removal rod facing the center of the base body is provided with a pointed head for inserting into the bone removal block, and the other end can be used to drive the bone removal rod to rotate in the through hole, so as to drive the bone removal block to rotate until it is separated from the bone removal site; a fixing part, which is used to fix the base body. Since the device first locates and cuts off the bone on both sides of the bone removal block by the bone chisel, and then screws off the bone removal block by rotation, the bone removal accuracy is high and the efficiency is high.

Description

Ring bone harvesting device

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a ring-shaped bone removal device.

Background Art

Bone harvesting surgery is a type of surgery used to repair bone damage or bone disease, usually involving the removal of bone from other parts of the body (usually in the femur, ilium, tibia, etc.) to treat the injury or disease. The steps of bone harvesting surgery are as follows: Determine the area where the bone needs to be harvested. Local anesthesia is administered, and then a surgical incision is made, which is usually located near the area where the bone needs to be harvested. Through the surgical incision, the bone harvesting instrument is inserted into the area where the bone needs to be harvested, and then the bone is carefully removed. After the bone is removed, the surgical incision is sutured, and then necessary bandaging and disinfection are performed.

Clinically, there is no special equipment for the above-mentioned bone harvesting process, and it is all done by the doctor's bare hands. The surgical incision is large, and sometimes even the entire incision needs to be opened. The bone is harvested while looking directly at the bone surface to prevent damage to blood vessels and nerves. Therefore, the damage is large, bleeding is heavy, and the precision is insufficient. Especially in irregular anatomical structures, such as the ilium and femoral condyle, when there are curved bone harvesting sources, the angle is not easy to control when inserting the osteotome, and it is easy to tilt, resulting in excessive or insufficient bone harvesting, iatrogenic fractures, etc., which cannot achieve the goal of precise minimally invasive surgery, is time-consuming and labor-intensive, and is not conducive to the early recovery of patients.

Therefore, the above-mentioned prior art has at least the following technical problems: the bone removal method in the prior art has a large incision, poor accuracy, low efficiency and many complications.

Utility Model Content

The embodiment of the present application provides a ring-shaped bone harvesting device to solve the technical problems of large incision, poor precision, low efficiency and more complications in the bone harvesting method in the prior art.

In order to solve the above technical problems, the present application provides an annular bone removal device, which includes:

An arc-shaped base body is provided with a through hole penetrating in the radial direction of the base body, and sliders are respectively provided on both sides of the through hole. The sliders are slidably arranged on the base body, and the sliders are provided with bone chisel openings penetrating in the radial direction of the base body;

A pair of bone chisels, respectively inserted into the bone chisel openings located on both sides of the through hole, and the chisel heads of the bone chisels are used to face the center of the base body to chisel into both sides of the bone block and intersect with the chisel head of the other bone chisel, thereby cutting off the bone on both sides of the bone block;

A bone removal rod is rotatably inserted into the through hole, and one end of the rod facing the center of the base body is provided with a pointed tip for inserting into the bone removal block, and the other end can be used to drive the bone removal rod to rotate in the through hole, so as to drive the bone removal block to rotate and separate from the bone removal site;

The fixing part is used for fixing the base.

Furthermore, the cross section of the osteotome gradually increases from the chisel tail to the chisel head.

Furthermore, the cross-sectional shape of the osteotome is square, the openings of the osteotome are all square, and the maximum cross-sectional area of the osteotome is greater than the size of the opening of the osteotome.

Furthermore, the through hole is located in the middle position of the base along the circumferential direction, and the sliders include several pairs, the two sliders of each pair of sliders are relatively arranged on both sides of the through hole, and the bone chisel openings on the two sliders of the same pair are the same size, and the bone chisel openings on the sliders of different pairs are the same size.

Furthermore, the base is provided with windows extending along the circumference of the base on both sides of the through hole, the windows penetrate the base in the radial direction, and slideways are provided on both sides of the window along the width direction of the base, the slideways extend along the circumference of the base, and both sides of the slider are embedded in the slideways and slide along the slideways.

Furthermore, arc length scales are arranged on the substrate along the circumference of the substrate.

Furthermore, a first external thread is provided on the outer circumference of the bone removal rod adjacent to the pointed head.

Furthermore, a handle convenient for hand-holding is provided on the other end of the bone removal rod to drive the bone removal rod to rotate.

Furthermore, the fixing part includes threaded holes arranged at both ends of the base along the axial direction, a threaded rod is passed through the threaded hole, and the threaded rod is provided with a second external thread for matching with the internal thread on the threaded hole. A pointed tip is provided on the end of the threaded rod facing the center of the base to facilitate insertion into the bone at the bone removal site, thereby improving the efficiency of the bone removal operation.

Furthermore, a third external thread is provided on the outer peripheral wall of the threaded rod adjacent to the tip.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

(1) In the embodiment of the present application, a fixing portion is provided to fix the base on or near the bone removal site, wherein a through hole is provided on the base for a bone removal rod to rotate and pass through, and sliders are provided on both sides of the through hole on the base, and bone chisel openings are provided on the sliders for a bone chisel to pass through; when removing bones, an appropriate incision is made according to the size of the bone block to be removed, and the sliders on both sides of the through hole are moved to appropriate positions according to the curvature of the bone block, and two bone chisels are respectively driven into the bone removal site through the bone chisel openings on the two sliders until the chisel heads of the two bone chisels intersect, thereby cutting off the bone on both sides of the bone removal block, and then the bone removal rod is screwed into the bone removal block through the through hole, and the bone removal block is driven to rotate until the bone removal block is completely separated from the bone removal site, and finally the bone removal block is removed. Since the device described in the embodiment of the present application first uses a bone chisel to locate and cut off the bone on both sides of the bone block, and then unscrews the bone block by rotation, the bone removal is highly accurate, the operation is highly controllable, the safety is high, the damage is small, the incision does not need to be too large, and the rotational bone removal efficiency is high, which effectively solves the technical problems of large incisions, poor accuracy, low efficiency and more complications in the bone removal method in the prior art.

(2) The cross section of the bone chisel gradually increases from the chisel tail to the chisel head, so that a sharp bone chisel head can be formed, which is convenient for driving into the bone, and can accurately locate the size of the bone block to be removed, and the bone removal efficiency is high.

(3) The cross-sectional shape of the osteotome is square, the osteotome openings are all square, and the maximum cross-sectional area of the osteotome is larger than the size of the osteotome openings. Therefore, by controlling the size of the osteotome openings, the penetration depth of the two osteotome at the bone harvesting site can be controlled, thereby controlling the thickness of the bone block.

(5) The through hole is located in the middle position of the base along the circumferential direction, and the sliders include a plurality of pairs. The two sliders of each pair of sliders are relatively arranged on both sides of the through hole, and the bone chisel openings on the two sliders of the same pair are of the same size, and the bone chisel openings on the sliders of different pairs are of the same size. Therefore, by selecting bone chisel openings of different sizes to drive the bone chisel, the thickness of the bone block can be adjusted, and the position adjustment of the slider on the base can meet the curvature adjustment requirements of the bone block, which greatly improves the practicality of the device and can remove relatively regular bone blocks.

(6) The base body is provided with arc length scales along the circumference of the base body, which are used to measure the arc length between the bone chisel openings on the two selected sliders to match the arc of the bone block. The user can read it intuitively, which is convenient and easy to use and has strong practicality.

(7) The bone removal rod is provided with a first external thread on the outer circumference adjacent to the pointed head, thereby improving the efficiency of screwing the bone removal rod into the bone removal block.

(8) A third external thread is provided on the outer peripheral wall of the threaded rod adjacent to the tip to facilitate insertion into the bone at the bone harvesting site, thereby further improving the efficiency of the bone harvesting operation.

(9) The bone removal rod is provided with a handle that is easy to hold, so as to facilitate driving the bone removal rod to rotate, thereby improving the comfort of use.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be 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 paying creative work.

FIG1 is a schematic diagram of the overall structure of an annular bone removal device according to an embodiment of the present invention;

FIG2 is a second schematic diagram of the overall structure of an annular bone removal device in one embodiment of the utility model;

FIG3 is a cross-sectional view of the overall structure of an annular bone removal device in one embodiment of the utility model;

FIG4 is a partial structural schematic diagram of an annular bone removal device according to an embodiment of the present invention;

FIG5 is a second schematic diagram of a partial structure of an annular bone removal device in one embodiment of the utility model;

FIG. 6 is a top view of a partial structure of an annular bone removal device in an embodiment of the present invention.

DETAILED DESCRIPTION

The embodiment of the present application provides a ring-shaped bone harvesting device to solve the technical problems of large incision, poor precision, low efficiency and more complications in the bone harvesting method in the prior art.

The technical solution in the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

The base is fixed on or near the bone removal site by setting a fixing part, wherein a through hole for the bone removal rod to rotate and pass through is provided on the base, and sliders are respectively provided on both sides of the through hole on the base, and bone chisel openings for the bone chisel to pass through are provided on the sliders; when removing bones, a proper incision is made according to the size of the bone block to be removed, and according to the curvature of the bone block to be removed, the sliders on both sides of the through hole are respectively moved to suitable positions, and two bone chisels are respectively driven into the bone removal site through the bone chisel openings on the two sliders until the chisel heads of the two bone chisels intersect, thereby cutting off the bone on both sides of the bone block to be removed, and then the bone removal rod is screwed into the bone removal block through the through hole, and the bone removal block is driven to rotate until the bone removal block is completely separated from the bone removal site, and finally the bone removal block can be removed. Since the device described in the embodiment of the present application first uses a bone chisel to locate and cut off the bone on both sides of the bone block, and then unscrews the bone block by rotation, the bone removal is highly accurate, the operation is highly controllable, the safety is high, the damage is small, the incision does not need to be too large, and the rotational bone removal efficiency is high, which effectively solves the technical problems of large incisions, poor accuracy, low efficiency and more complications in the bone removal method in the prior art.

In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

In one or more embodiments of the present application, a ring-shaped bone harvesting device is provided, which is used for performing bone harvesting surgery, that is, taking out bone blocks from a human body bone harvesting site (such as a femur, ilium, tibia, etc.), and is particularly suitable for harvesting bones from irregular bone harvesting sites (such as an ilium, femoral condyle, etc.). Of course, in other embodiments, the device can also be used in other occasions, which is not limited here.

As shown in FIGS. 1 to 6 , an embodiment of the present application provides a ring-shaped bone removal device, the device comprising:

An arc-shaped base 100 is provided with a through hole 140 penetrating in the radial direction of the base 100, and sliders 110 are respectively provided on both sides of the through hole 140. The sliders 110 are slidably arranged on the base 100, and the sliders 110 are provided with bone chisel openings 120 penetrating in the radial direction of the base 100;

A pair of osteotome 200, respectively inserted into one of the osteotome openings 120 located on both sides of the through hole 140, and the chisel heads of the osteotome 200 are used to face the center of the circle of the base 100 to chisel into both sides of the bone block and intersect with the chisel head of another osteotome 200, thereby cutting off the bone on both sides of the bone block;

The bone removal rod 300 is rotatably inserted into the through hole 140, and one end of the rod facing the center of the base body 100 is provided with a pointed head 330 for inserting into the bone removal block, and the other end can be used to drive the bone removal rod 300 to rotate in the through hole 140, so as to drive the bone removal block to rotate and separate from the bone removal site;

The fixing part is used to fix the base 100 to the bone block.

As can be seen from the above description, the embodiment of the present application fixes the base 100 on or near the bone removal site by setting a fixing part, wherein the base 100 is provided with a through hole 140 for the bone removal rod 300 to rotate and pass through, and the base 100 is provided with sliders 110 on both sides of the through hole 140, and the sliders 110 are provided with bone chisel openings 120 for the bone chisel 200 to pass through; when removing bones, a proper incision is made according to the size of the bone block to be removed, and according to the curvature of the bone block to be removed, the sliders 110 on both sides of the through hole 140 are respectively moved to appropriate positions, and the two bone chisels 200 are respectively driven into the bone removal site through the bone chisel openings 120 on the two sliders 110 until the chisel heads of the two bone chisels 200 intersect, thereby cutting off the bone on both sides of the bone removal block, and then the bone removal rod 300 is screwed into the bone removal block through the through hole 140, and the bone removal block is driven to rotate until the bone removal block is completely separated from the bone removal site, and finally the bone removal block can be removed. Since the device described in the embodiment of the present application first uses a bone chisel to locate and cut off the bone on both sides of the bone block, and then unscrews the bone block by rotation, the bone removal is highly accurate, the operation is highly controllable, the safety is high, the damage is small, the incision does not need to be too large, and the rotational bone removal efficiency is high, which effectively solves the technical problems of large incisions, poor accuracy, low efficiency and more complications in the bone removal method in the prior art.

In one embodiment of the present application, as shown in FIGS. 1 to 3 , the cross-section of the osteotome 200 gradually increases from the tail of the osteotome 200 to the head of the osteotome 200 , so that a sharp head of the osteotome 200 can be formed, which is convenient for driving into the bone, and can accurately locate the size of the bone block and has high bone removal efficiency.

In one embodiment of the present application, as shown in FIGS. 1 to 3 , the cross-sectional shape of the osteotome 200 is square, the osteotome openings 120 are all square openings, and the maximum cross-sectional area of the osteotome 200 is greater than the size of the osteotome openings 120 .

Specifically, the maximum cross-sectional area of the osteotome 200 is larger than the size of the osteotome opening 120, and the maximum lengths of the osteotome 200 allowed to be penetrated by osteotome openings 120 of different sizes are different. Thus, by controlling the size of the osteotome opening 120, the penetration depth of the two osteotome 200 at the bone removal site can be controlled, thereby controlling the thickness of the bone block.

For example, in the above embodiment, the through hole 140 is located in the middle position of the base 100 along the circumferential direction, and the slider 110 includes a plurality of pairs, and the two sliders 110 of each pair of the sliders 110 are relatively arranged on both sides of the through hole 140, and the bone chisel openings 120 on the two sliders 110 of the same pair are the same in size, and the bone chisel openings 120 on the sliders 110 of different pairs are the same in size.

Specifically, by selecting bone chisel openings of different sizes to drive the bone chisel 200, the thickness of the bone block can be adjusted, and the position of the slider 110 on the base 10 can be adjusted to meet the curvature adjustment requirements of the bone block, which greatly improves the practicality of the device.

In addition, the two osteochisels 120 are respectively matched with the osteochisel openings 120 on a pair of sliders 110, and the pair of sliders 110 are moved to both sides of the through hole 140 and symmetrically about the central axis of the through hole 140, and then the osteochisels 120 are symmetrically driven into both sides of the bone block. The chisel heads of the two osteochisels 120 intersect, and a relatively regular bone block can be taken out.

In one embodiment of the present application, as still shown in Figures 1 to 3, the bone chisel 200 has a cross-section with side lengths of 5 mm, 1 cm, 1.5 cm, 2 cm, 2.5 cm, 3 cm, 4 cm, and 5 cm, respectively; 8 sliders 110 are provided on one side of the through hole, and the side lengths of the bone chisel openings 120 of the 8 sliders 110 are 5 mm, 1 cm, 1.5 cm, 2 cm, 2.5 cm, 3 cm, 4 cm, and 5 cm, respectively, so as to just match the side lengths of the cross-section of the bone chisel 200, thereby controlling the thickness of the bone block.

In one embodiment of the present application, windows extending along the circumference of the base 100 are respectively provided on both sides of the through hole 140 on the base 100, the windows penetrate along the radial direction of the base 100, and slideways are provided on both sides of the windows along the width direction of the base 100, the slideways extend along the circumference of the base 100, and the two sides of the slider 110 are embedded in the slideways and slide along the slideways, so as to realize the sliding of the slider 110 on the base 100. In addition, it should be noted that the two sides of the slider 110 are frictionally matched with the slideways, so that the slider 110 can be forced to slide on the base 100 under the action of external force, and the slider 110 can be positioned on the base 100 when the external force disappears.

It should also be noted that the slider 110 includes a block-shaped body and embedded edges arranged on both sides of the body, and the thickness of the embedded edges is relatively thin. In order to facilitate the sliding of the slider 110 on the arc-shaped base 100, the embedded edges have a certain deformation ability, such as a steel sheet, to adapt to sliding on slides at different curvatures, and the slider 110 body and the embedded edges themselves also have a certain curvature to adapt to sliding on the base 100.

In one embodiment of the present application, an arc length scale 130 is provided on the base 100 along the circumference of the base 100, which is used to measure the arc length between the bone chisel openings 120 on the two selected sliders 110 to match the arc of the bone block. The user can read it intuitively, which is convenient and easy to use and has strong practicality.

In one embodiment of the present application, a first external thread 320 is provided on the outer circumference of the bone removal rod 300 adjacent to the pointed head 330, so that the efficiency of screwing the bone removal rod 300 into the bone removal block can be improved.

In one embodiment of the present application, the fixing portion includes threaded holes arranged at both ends of the base 100 along the axial direction, a threaded rod 400 is passed through the threaded hole, and the threaded rod 400 is provided with a second external thread 410 for matching with the internal thread on the threaded hole. A tip 430 is provided on the end of the threaded rod 400 facing the center of the base 100 to facilitate insertion into the bone at the bone removal site, thereby improving the efficiency of the bone removal operation.

Furthermore, a third external thread 420 is provided on the outer peripheral wall of the threaded rod 400 adjacent to the tip 430 to facilitate insertion into the bone at the bone harvesting site, thereby further improving the efficiency of the bone harvesting operation.

In one embodiment of the present application, a handle 310 that is convenient for holding is provided on the other end of the bone removal rod 300 to facilitate driving the bone removal rod 300 to rotate and improve the comfort of use.

An exemplary method of using the annular bone removal device described in the embodiment of the present application is as follows:

According to the thickness of the bone block, a pair of suitable sliders 110 are selected, and the osteotome 200 is respectively inserted into the osteotome openings 120 on the pair of sliders 110, and according to the curvature of the bone block, the slider 110 is moved to a suitable position on the base 100; according to the size of the bone block, a proper incision is made, and two osteotome 200 are respectively driven into the bone removal site until the chisel heads of the two osteotome 200 intersect, thereby cutting off the bone on both sides of the bone block, and then the bone removal rod 300 is screwed into the bone removal block through the through hole 140 and rotated until the bone removal block is rotated to be completely separated from the bone removal site, and finally the bone removal block is removed.

It should be understood that although the terms "first", "second", etc. may be used herein to describe various units, these units should not be limited by these terms. These terms are used only to distinguish one unit from another. For example, a first unit may be referred to as a second unit, and similarly, a second unit may be referred to as a first unit without departing from the scope of the exemplary embodiments.

The directional terms such as outer, middle, inner, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

The above is only a preferred embodiment of the present application, and is not any formal or substantial limitation to the present application. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the method of the present application, and these improvements and supplements should also be regarded as the protection scope of the present utility model. Any technician familiar with this profession can make some changes, modifications and evolutions of the technical content disclosed above without departing from the spirit and scope of the present application, which are equivalent embodiments of the present application; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the substantial technology of the present application are still within the scope of the technical solution of the present application.

Claims (10)

1. A ring-shaped bone removal device, characterized in that the device comprises: An arc-shaped base body is provided with a through hole penetrating in the radial direction of the base body, and sliders are respectively provided on both sides of the through hole. The sliders are slidably arranged on the base body, and the sliders are provided with bone chisel openings penetrating in the radial direction of the base body; A pair of bone chisels, respectively inserted into the bone chisel openings located on both sides of the through hole, and the chisel heads of the bone chisels are used to face the center of the base body to chisel into both sides of the bone block and intersect with the chisel head of the other bone chisel, thereby cutting off the bone on both sides of the bone block; A bone removal rod is rotatably inserted into the through hole, and one end of the rod facing the center of the base body is provided with a pointed tip for inserting into the bone removal block, and the other end can be used to drive the bone removal rod to rotate in the through hole, so as to drive the bone removal block to rotate and separate from the bone removal site; The fixing part is used for fixing the base. 2. A ring-shaped bone removal device as described in claim 1, characterized in that the cross-section of the bone chisel gradually increases from the chisel tail to the chisel head. 3. A ring-shaped bone removal device as described in claim 2, characterized in that the cross-sectional shape of the bone chisel is square, the bone chisel opening is a square opening, and the maximum cross-sectional area of the bone chisel is larger than the size of the bone chisel opening. 4. An annular bone removal device as described in claim 3, characterized in that the through hole is located in the middle position of the base along the circumferential direction, and the sliders include a plurality of pairs, the two sliders of each pair of sliders are relatively arranged on both sides of the through hole, and the bone chisel openings on the two sliders of the same pair are the same size, and the bone chisel openings on the sliders of different pairs are the same size. 5. An annular bone removal device as described in claim 1, characterized in that the base is provided with windows extending along the circumference of the base on both sides of the through hole, the windows penetrate the base in the radial direction, and slideways are provided on both sides of the window along the width direction of the base, the slideways extend along the circumference of the base, and both sides of the slider are embedded in the slideways and slide along the slideways. 6. The annular bone removal device according to claim 1, characterized in that arc length scales are provided on the base along the circumference of the base. 7. The annular bone removal device according to claim 1, characterized in that a first external thread is provided on the outer circumference of the bone removal rod adjacent to the pointed head. 8. The annular bone removal device according to claim 1, characterized in that a handle convenient for hand-holding is provided on the other end of the bone removal rod to drive the bone removal rod to rotate. 9. An annular bone removal device as described in claim 1, characterized in that the fixing part includes threaded holes arranged at both ends of the base along the axial direction, a threaded rod is passed through the threaded hole, and the threaded rod is provided with a second external thread for matching with the internal thread on the threaded hole, and a pointed end of the threaded rod facing the center of the base is provided to facilitate insertion into the bone at the bone removal site, thereby improving the efficiency of the bone removal operation. 10. The annular bone removal device according to claim 9, characterized in that a third external thread is provided on the outer peripheral wall of the threaded rod adjacent to the tip.