CN218792395U - Boot-shaped osteotome and spinal column orthopedic surgical instrument - Google Patents

Abstract

The utility model discloses a boots shape osteotome and backbone orthopedic surgery apparatus belongs to medical instrument technical field, boots shape osteotome is used for the vertical direction to reject the bone piece, and this boots shape osteotome is including the first handle of a knife that is located the rear portion, be located the first cutter arbor at middle part and be located anterior first tool bit, and first tool bit is the boots shape tool bit, and the boots shape tool bit includes the boots section of thick bamboo portion that is connected with first cutter arbor and the boots top of being connected with the boots section of thick bamboo portion, and the preceding terminal surface of boots top is the inclined plane of slope forward, is equipped with the windowing that extends along the axial direction of boots section of thick bamboo portion on the boots top, and the end of boots top is equipped with first blade at the inward flange of windowing. The utility model discloses a dynamics is mastered easily to boots shape osteotome and backbone orthopedic surgery apparatus, protects spinal cord and nerve root tissue, can not harm spinal cord, nerve root and centrum the place ahead great vessel etc. and the security is high.

Description

Boot-shaped osteotome and spinal column orthopedic surgical instrument

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a boot-shaped osteotome and spinal column orthopedic surgery equipment.

Background

The spine is positioned in the center of the back of a human body, the upper end of the spine is connected with the skull, the lower end of the spine reaches the tip of the coccyx, and the nerve vessels are staggered and dense, so that the spine is a life hub of the whole body and has the functions of loading, shock absorption, protection, movement and the like. In recent years, spinal health issues have attracted attention. People suffering from congenital spine diseases, spine tumors, spine trauma, cervical and lumbar diseases caused by keeping the same posture for a long time and the like have higher requirements on the operation process and the operation quality of doctors.

In spinal surgery, especially in parallel end plate osteotomy (PEO), it is necessary to break anterior cortical bone of upper and lower vertebral bodies with a osteotome and remove ventral spinal cord small bone pieces to relieve tension and protect spinal cord and nerve roots. The existing osteotome is too sharp and difficult to master the force, and for an inexperienced operator, the operation force can damage spinal cord, nerve root, great vessels in front of vertebral bodies and the like once being not well mastered, thereby increasing the operation risk.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a boots shape osteotome and backbone orthopedic surgery apparatus that the dynamics of mastering easily, security is high.

In order to solve the technical problem, the utility model provides a technical scheme as follows:

on the one hand, provide a boots shape osteotome for bone piece is rejected to vertical direction, including the first handle of a knife that is located the rear portion, be located the first cutter arbor at middle part and be located anterior first tool bit, first tool bit is the boots shape tool bit, the boots shape tool bit include with the boots section of thick bamboo portion that first cutter arbor is connected and with the boots head that boots section of thick bamboo portion is connected, the preceding terminal surface of boots head is the inclined plane that slopes forward, be equipped with on the boots head along the windowing that the axial direction of boots section of thick bamboo portion extends, the end of boots head is in the inward flange of windowing is equipped with first blade.

Furthermore, the front end face of the boot head part is an inclined plane which inclines forwards, and an included angle between the inclined plane and the direction of the perpendicular line of the axis of the boot barrel part is 10-50 degrees.

Furthermore, a cavity extending along the axial direction of the boot barrel part is formed in the boot barrel part to form a crushed bone collecting cavity, and a crushed bone inlet is formed in the position, corresponding to the first cutting edge, of the crushed bone collecting cavity.

Furthermore, an expansion part is arranged at the front end of the first cutter bar to form the boot barrel part, and a broken bone outlet is arranged at the rear end of the boot barrel part;

and/or the side surface of the boot barrel part is provided with an opening communicated with the crushed bone collecting cavity.

In another aspect, there is provided an orthopedic spinal surgical device comprising the above-described bootie knife.

Furthermore, the spine orthopedic surgery instrument further comprises a vertebral body front edge osteotome, the vertebral body front edge osteotome comprises a second knife handle positioned at the rear part, a second knife rod positioned at the middle part and a second knife head positioned at the front part, the second knife head is flat, and a second cutting edge is arranged at the front end of the second knife head.

Further, both sides about the front end of second tool bit all are equipped with the inclined plane, the inclined plane from back to preceding is gradually to the axis direction slope of second handle of a knife and intersect at last in order to form the second blade, wherein:

inclined planes on the upper side and the lower side of the front end of the second tool bit are symmetrically distributed along the axis of the second tool handle;

and/or the included angle between the inclined planes at the upper side and the lower side of the front end of the second cutter head is 10-90 degrees;

and/or the second cutter head is provided with a depth-limiting blocking platform.

Furthermore, the spinal orthopedic surgical instrument further comprises a top cover osteotome, the top cover osteotome comprises a third handle at the rear part, a third cutter bar at the middle part and a third cutter head at the front part, a third cutting edge is arranged at the front edge of the third cutter head, a top cover is arranged on one side of the third cutter head, and the front end of the top cover exceeds the third cutting edge.

Further, the third cutter head is cylindrical, and the third cutting edge is an annular cutting edge arranged on the edge of the cylindrical front end face;

and/or the third cutter head is cylindrical, and a cavity extending along the axial direction of the third cutter head is arranged in the third cutter head so as to form a broken bone collecting cavity;

and/or the connecting part of the third cutter head and the third cutter bar is a bent part, the bending angle of the bent part is 165-175 degrees, and the top cover is arranged on the bent side of the bent part on the third cutter head.

Further, the top cover is in a shape of melon seeds;

and/or the width of the top cover is 10-30mm;

and/or the length of the top cover is 15-30mm;

and/or the front end of the top cover exceeds the third cutting edge by 2-8mm.

The utility model discloses following beneficial effect has:

the utility model discloses a boots shape osteotome is used for the vertical direction to reject the bone piece, and the first tool bit of this boots shape osteotome is the boots shape tool bit, and this boots shape tool bit includes the boots section of thick bamboo portion that is connected with the first blade pole of boots shape osteotome and the boots head that is connected with the boots section of thick bamboo portion, and the preceding terminal surface of boots head is the inclined plane of slope forward, is equipped with the windowing that extends along the axial direction of boots section of thick bamboo portion in the boots head, and the end of boots head is equipped with first blade at the inward flange of windowing, compares in prior art, the utility model discloses a dynamics is mastered easily to the boots shape osteotome, can reject the ossicle on the vertical direction of centrum and nerve root, protects spinal cord and nerve root tissue, can not harm spinal cord and nerve root tissue security height, security height.

Drawings

FIG. 1 is a schematic perspective view of a boot-shaped osteotome in the spinal orthopedic surgical device of the present invention;

FIG. 2 is a schematic structural view of a boot-shaped osteotome in the spinal orthopedic surgical device of the present invention, wherein (a) is a side view in one direction and (b) is a side view in another direction;

FIG. 3 is a schematic view illustrating a usage status of a boot-shaped osteotome in the spinal orthopedic surgical device of the present invention;

FIG. 4 is a schematic perspective view of a vertebral body leading edge osteotome in the spinal orthopedic surgical device according to the present invention;

FIG. 5 is a schematic structural view of a vertebral leading edge osteotome in the spinal orthopaedic surgical instrument of the present invention, wherein (a) is a lateral view in one direction and (b) is a lateral view in another direction;

FIG. 6 is a schematic view showing the use state of a vertebral body leading edge osteotome in the spinal orthopedic surgical instrument according to the present invention;

FIG. 7 is a schematic perspective view of a top cap osteotome of the orthopedic spinal surgical device of the present invention;

fig. 8 is a schematic structural view of a top cap osteotome in the spinal orthopaedic surgical instrument of the present invention, wherein (a) is a side view in one direction and (b) is a side view in another direction;

fig. 9 is a schematic view of the use state of the top cap osteotome in the spinal orthopedic surgical device of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

In one aspect, the utility model provides a boot-shaped osteotome 1 for the ossicle is rejected to the vertical direction, as shown in fig. 1-3, including the first handle 11 that is located the rear portion, the first blade 12 that is located the middle part, and be located anterior first blade 13, first blade 13 is the boot-shaped blade, and the boot-shaped blade includes the leg of a boot 131 that is connected with first blade 12, and the toe of a boot 132 that is connected with leg of a boot 131, and the preceding terminal surface of toe 132 is the inclined plane 135 of slope forward, is equipped with the window 133 that opens along the axial direction extension of leg of a boot 131 on the toe 132, and the terminal inward flange of the toe of boot 132 is equipped with first blade 134 at the window 133.

When the bone removing device is used, the first cutter handle 11 is held by hand, the first cutter head 13 is inserted between the vertebral body and the nerve root, the window 133 on the boot head 132 of the first cutter head 13 is sleeved on a bone block to be removed, then the first cutter handle 11 is moved downwards, the bone block to be removed can be removed in the vertical direction by the first cutting edge 134 at the tail end of the boot head 132, and the operation is repeated until the bone block to be removed is completely removed (refer to fig. 3).

The utility model discloses a boots shape osteotome is used for the vertical direction to reject the bone piece, and this first tool bit is the boots shape tool bit, and this boots shape tool bit includes the boots section of thick bamboo portion that is connected with the first blade pole of boots shape osteotome and the boots head portion that is connected with the boots section of thick bamboo portion, and the preceding terminal surface of boots head portion is the inclined plane of slope forward, is equipped with the windowing that extends along the axial direction of boots section of thick bamboo portion on the boots head portion, and the end of boots head portion is equipped with first blade at the inward flange of windowing, compares in prior art, the utility model discloses a dynamics is mastered easily to the boots shape osteotome, can reject the ossicle on the vertical direction of centrum and nerve root, protects spinal cord and nerve root tissue, can not harm spinal cord and nerve root tissue, and the security is high. The utility model is suitable for a backbone orthopaedic surgery, especially suitable for correcting serious thoracic and lumbar vertebrae stiffness deformity surgery in parallel end plate osteotomy.

As shown in fig. 1-2, in order to facilitate the attachment of the vertebral body for better removal of the small bone pieces, the included angle α between the inclined plane 135 and the perpendicular direction of the axis of the bootleg portion 131 is 10 to 50 degrees, and may be 10 degrees, 20 degrees, 30 degrees, 40 degrees, 50 degrees, or the like.

The inside of the boot tube part 131 can be provided with a cavity extending along the axial direction of the boot tube part 131 to form a crushed bone collecting cavity 136, the position of the crushed bone collecting cavity 136 corresponding to the first cutting edge 134 is provided with a crushed bone inlet 137, and the crushed bones removed in this way can enter the crushed bone collecting cavity 136 along the crushed bone inlet 137, so that the crushed bones can be conveniently collected and prevented from falling, and the safety is high.

1-2, the front end of the first cutter arbor 12 may be provided with an enlarged portion to form a boot 131 (i.e., the boot 131 is larger in size than the first cutter arbor 12) to facilitate the placement of a more voluminous fractured bone collection cavity 136; the rear end of the boot portion 131 may be provided with a crushed bone outlet 138 to facilitate removal of the crushed bone from the crushed bone collection chamber 136. The side of the boot portion 131 may be provided with an opening 139 communicating with the crushed bone collecting chamber 136 to facilitate observation of the collection of the crushed bone in the crushed bone collecting chamber 136, and when the crushed bone outlet 138 is blocked, the crushed bone in the crushed bone collecting chamber 136 may be directly removed from the opening 139.

In another aspect, the present invention provides an orthopedic spinal surgical device, as shown in fig. 1-9, comprising the above-described bootie blade 1. Since the structure of the bootie knife 1 is the same as above, it will not be described herein.

The utility model discloses a spinal column orthopedic surgery apparatus, the first tool bit of its boots shape osteotome be the boots shape tool bit, and this boots shape tool bit includes the boots section of thick bamboo portion that is connected with the first blade pole of boots shape osteotome and the boots top of being connected with the boots section of thick bamboo portion, is equipped with the windowing that extends along the axial direction of boots section of thick bamboo portion on the boots top, and the end of boots top is equipped with first blade at the inward flange of windowing, compares in prior art, the utility model discloses a dynamics is mastered easily to the boots shape osteotome, can reject the ossicle on the vertical direction of centrum and nerve root, protects spinal cord and nerve root tissue, can not harm spinal cord and nerve root tissue, and the security is high.

As shown in fig. 4-6, the spinal orthopaedic surgical instrument may further include a vertebral body anterior edge osteotome 2 (only used for osteotomy at the anterior edge of the vertebral body), the vertebral body anterior edge osteotome 2 includes a second handle 21 at the rear portion, a second cutter bar 22 at the middle portion, and a second cutter head 23 at the front portion, the second cutter head 23 is flat, and a second cutting edge 231 is disposed at the front end of the second cutter head 23.

When the cutting tool is used, the second tool handle 21 is held by hand, the second cutting edge 231 at the front end of the second tool bit 23 is aligned to the cortical bone at the front edge of the vertebral body, then the first tool handle 21 is driven forwards, and the cortical bone at the front edge of the vertebral body can be broken by the second cutting edge 231 at the front end of the second tool bit 23 (refer to fig. 6); therefore, after the cortical bone at the front edges of the upper vertebral body and the lower vertebral body is broken, the whole vertebral body is not broken, the large blood vessel in front of the vertebral body is not damaged, the spinal cord and nerve roots are protected, and the spinal osteotomy correction is safer.

As shown in fig. 5, to facilitate forming the second cutting edge 231, the front end of the second cutting head 23 may be provided with inclined surfaces 232 at upper and lower sides, and the inclined surfaces 232 are gradually inclined from back to front toward the axis direction of the second tool shank 21 and finally intersect to form the second cutting edge 231.

Furthermore, the inclined surfaces 232 on the upper side and the lower side of the front end of the second tool bit 23 are preferably symmetrically distributed along the axis of the second tool shank 21; the included angle (i.e., the blade angle) β between the inclined surfaces 232 on the upper and lower sides of the front end of the second tool bit 23 is preferably 10 to 90 degrees, and specifically may be 10 degrees, 30 degrees, 50 degrees, 70 degrees, 90 degrees, and the like. A depth stop (not shown) may be provided on the second cutting head 23 to prevent the second cutting head 23 from being inserted too far, further improving safety.

As shown in fig. 7-9, in order to facilitate the removal of the ventral bone mass of the spinal cord, the spinal orthopedic surgical instrument may further include a top cap osteotome 3, the top cap osteotome 3 includes a third handle 31 located at the rear portion, a third cutter bar 32 located at the middle portion, and a third cutter head 33 located at the front portion, a front edge of the third cutter head 33 is provided with a third cutting edge 331, a side of the third cutter head 33 is provided with a top cap 332, and a front end of the top cap 332 exceeds the third cutting edge 331.

During the use, handheld third handle of a knife 31 and insert third tool bit 33 between centrum and the nerve root, make the third blade 331 of third tool bit 33 front edge aim at and wait to reject the bone piece, drive third handle of a knife 31 forward, the bone piece of waiting to reject can be rejected to the third blade 331 of third tool bit 33 front edge, the repeated operation is rejected completely until waiting to reject the bone piece (refer to fig. 9), this in-process, top cap 332 protects spinal cord and nerve root, avoid spinal cord and nerve root to be injured by third blade 331, the security is high.

As shown in fig. 8, to remove bone pieces in multi-dimensional directions, the third cutting head 33 may have a cylindrical shape, and the third cutting edge 331 is an annular cutting edge disposed at an edge of a front end surface of the cylindrical shape. The inside of third tool bit 33 can be equipped with the cavity that extends in the axis direction of third tool bit 33 in order to form garrulous bone collection chamber (not shown), and the garrulous bone of rejecting like this can drop to garrulous bone collection chamber to conveniently collect garrulous bone, prevent that the garrulous bone from dropping, the security is high.

In order to better realize the multi-dimensional direction bone block removal, the connecting part of the third cutter head 33 and the third cutter bar 32 can be a bending part, the bending angle of the bending part is preferably 165-175 degrees, and specifically can be 160 degrees, 170 degrees, 175 degrees and the like, and a top cover 332 is arranged on the bending side of the bending part on the third cutter head 33.

As further shown in FIG. 8, the cap 332 is preferably melon seed shaped; the width L2 of the cap 332 may be 10-30mm; the length L1 of the cap 332 may be 15-30mm; the front end of the cap 332 preferably extends 2-8mm beyond the third cutting edge, where best results are obtained.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and embellishments can be made without departing from the principle of the present invention, and these improvements and embellishments should also be regarded as the protection scope of the present invention.

Claims (9)

1. The utility model provides a boots shape osteotome, its characterized in that, including the first handle of a knife that is located the rear portion, be located the first cutter arbor at middle part and be located anterior first tool bit, first tool bit is the boots shape tool bit, the boots shape tool bit include with the boots section of thick bamboo portion that first cutter arbor is connected and with the boots section of thick bamboo portion that is connected, the preceding terminal surface of boots head is the inclined plane that slopes forward, be equipped with on the boots head along the windowing that the axial direction of boots section of thick bamboo portion extends, the end of boots head is in the inward flange of windowing is equipped with the first blade that is used for rejecting the bone piece on the vertical direction of centrum and nerve root, the inclined plane with contained angle between the perpendicular line direction of the axis of boots section of thick bamboo portion is 10-50 degrees.

2. The bootie osteotome defined in claim 1 wherein said boot portion defines a cavity extending in an axial direction of said boot portion to define a bone fragment collection chamber, said bone fragment collection chamber defining a bone fragment entrance at a location corresponding to said first cutting edge.

3. The shoe osteotome defined in claim 2 wherein said first blade bar has a flared portion at a forward end thereof to define said barrel portion, said barrel portion having a comminuted bone exit at a rearward end thereof;

and/or the side surface of the boot barrel part is provided with an opening communicated with the crushed bone collecting cavity.

4. An orthopedic spinal surgical instrument comprising the bootie knife of any of claims 1-3.

5. The spinal orthopaedic surgical instrument of claim 4, further comprising a vertebral body leading edge osteotome, the vertebral body leading edge osteotome including a second handle at a rear portion, a second tool bar at a middle portion, and a second tool bit at a front portion, the second tool bit being flat, a front end of the second tool bit being provided with a second cutting edge.

6. The spinal orthopaedic surgical instrument of claim 5, wherein the second blade head has a bevel on both the upper and lower sides of the front end, the bevel gradually inclining to the axis direction of the second handle from back to front and finally intersecting to form the second cutting edge, wherein:

inclined planes on the upper side and the lower side of the front end of the second tool bit are symmetrically distributed along the axis of the second tool handle;

and/or an included angle between the inclined planes at the upper side and the lower side of the front end of the second cutter head is 10-90 degrees;

and/or the second cutter head is provided with a depth-limiting blocking platform.

7. The spinal orthopaedic surgical instrument of claim 4, further comprising a top cap osteotome including a third handle at a rear portion, a third cutter bar at a middle portion, and a third cutter head at a front portion, wherein a front edge of the third cutter head is provided with a third cutting edge, a side of the third cutter head is provided with a top cap, and a front end of the top cap extends beyond the third cutting edge.

8. The spinal orthopaedic surgical instrument of claim 7, wherein the third cutting head is cylindrical and the third cutting edge is an annular cutting edge disposed at an edge of the cylindrical front face;

and/or the third cutter head is cylindrical, and a cavity extending along the axial direction of the third cutter head is arranged in the third cutter head so as to form a broken bone collecting cavity;

and/or the connecting part of the third cutter head and the third cutter bar is a bent part, the bending angle of the bent part is 165-175 degrees, and the top cover is arranged on the bent side of the bent part on the third cutter head.

9. The spinal orthopedic surgical instrument according to claim 7, wherein the top cap is melon seed shaped;

and/or the width of the top cover is 10-30mm;

and/or the length of the top cover is 15-30mm;

and/or the front end of the top cover exceeds the third cutting edge by 2-8mm.

Images