CN211460381U

CN211460381U - Special grinding drill bit for intervertebral foramen mirror

Info

Publication number: CN211460381U
Application number: CN201922222274.6U
Authority: CN
Inventors: 张西峰
Original assignee: Beijing Jiesheng Juli Medical Technology Service Co ltd
Current assignee: Beijing Jiesheng Juli Medical Technology Service Co ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-09-11
Anticipated expiration: 2029-12-12

Abstract

The utility model discloses a special mill drill bit of intervertebral foramen mirror relates to the technical field of intervertebral foramen mirror diagnosis and treatment, including the drilling rod, the drill bit of being connected with the one end integral type of drilling rod, the inside of drilling rod and drill bit is equipped with along its axis direction and runs through the drilling rod with the direction passageway of drill bit, the drill bit is equipped with first round platform, second round platform in proper order from the one end of keeping away from the drilling rod, the tip of first round platform is convex transitional coupling with the direction passageway to form the evagination arc in the transition department, the main aspects of first round platform is the tip of second round platform, be equipped with the spiral cutting edge between the main aspects of second round platform and the drilling rod, be equipped with the frosting on the lateral wall of second round; the utility model can push away the spinal cord and nerve roots in front of the vertebral plate to avoid stimulation and damage; can avoid scratching nerve roots and penetrating cortex lycii on the opposite side; the second round platform adopts the frosted surface to play the transition effect when the abrasive drilling fluting, and soft tissue around the protection alleviates the abrasive drilling and gets into the instantaneous pressure that produces the canalis spinalis after to the canalis spinalis.

Description

Special grinding drill bit for intervertebral foramen mirror

Technical Field

The utility model relates to a technical field is diagnose to the foraminiferous mirror, specifically is a special drill bit that grinds of foraminiferous mirror.

Background

The transforaminal endoscope is similar to a spinal endoscope and is a tube provided with a light, and the tube enters an intervertebral foramen from the side or the lateral back of the body of a patient (can be flat and can be inclined), and the operation is carried out in a safe working triangular area. The operation is performed outside the intervertebral disc fibrous ring, and the protruded nucleus pulposus, nerve roots, the dural sac and the hyperplastic bone tissues can be clearly seen under the direct vision of an endoscope. Then, various grasping forceps are used for removing the protruded tissues, bone is removed under a mirror, and the damaged fibrous ring is repaired by the radio frequency electrode.

In the intervertebral foramen forming process, the use of a grinding drill is generally two cases:

1. although the intervertebral foramen is narrow, the puncture needle can still directly reach the target position, after the guide wire is replaced, the intervertebral foramen is expanded from small to large by abrasive drilling along the guide wire by 4mm, 6mm, 7mm, 8.5mm, and finally the maximum guide rod is placed and guided into the working sleeve, thereby saving a great deal of operation time;

2. if the puncture needle can not reach the target point at once, the soft tissue is expanded, the protective sleeve is placed on the zygapophysis joint, a positioner (TOM) is used for directly knocking in the vertebral canal from the zygapophysis to the target point, the needle core is pulled out, the guide wire is placed in place, then the TOM outer sleeve is pulled out, and the intervertebral foramen is gradually expanded and ground from small to large along the guide wire by a grinding drill until the intervertebral foramen can easily enter the working channel.

In intervertebral foramen mirror operation, especially in cervical vertebra way of escape double door, single open door operation, must carry on the fluting operation of the single cortex, only need to bore bone cortex and compact bone matter of unilateral in operation, but keep the cortex of opposite side, fluting often uses the abrasive drilling head with helical cutting edge at present, in the fluting course of abrasive drilling, need special care, in order to avoid piercing through the cortex of opposite side, cause fluting to fail, thus cause the operation to fail; and the spinal cord and nerve roots are positioned in front of the vertebral plate, and if the spinal cord and nerve roots penetrate through the opposite cortical bone, the spinal cord and nerve roots are easily damaged, so that the operation fails.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a special grinding bit for a transforaminal endoscope.

The utility model aims at realizing through the following technical scheme: the utility model provides a special drill bit that grinds of intervertebral foramen mirror, including drilling rod 1, with drill bit 2 that the one end integral type of drilling rod 1 is connected, drilling rod 1 with the inside of drill bit 2 is equipped with along its axis direction and runs through drilling rod 1 with the direction passageway 3 of drill bit 2, drill bit 2 is from keeping away from the one end of drilling rod 1 is equipped with first round platform 4, second round platform 5 in proper order, the tip of first round platform 4 with be convex transitional coupling between the direction passageway 3 to form outer convex arc 8 in transition department, the tip of first round platform 4 does the tip of second round platform 5, the tip of second round platform 5 with be equipped with spiral cutting edge 6 between the drilling rod 1, be equipped with frosted surface 7 on the lateral wall of second round platform 5.

In a preferred embodiment, the sanding surface 7 consists of silicon carbide sprayed onto the side wall of the second circular table 5.

In a preferred embodiment, the taper of the first truncated cone 4 is greater than the taper of the second truncated cone 5.

The utility model has the advantages that:

when the first round table of the utility model is used for drilling intervertebral foramen, the spinal cord and nerve roots in front of the vertebral plate are pushed away and separated, so as to avoid stimulation and damage to the spinal cord and nerve roots; the arc-shaped transition connecting section, namely the outward convex arc, of the first round table and the guide channel can avoid scratching nerve roots and penetrating opposite cortex lycii to cause operation failure; the second round platform adopts the frosting surface to be used for playing the transition effect when the abrasive drilling fluting operation, can not directly carry out the abrasive drilling fluting operation like prior art's drill bit, easily produces more serious destruction to soft tissue around, and utilizes the second round platform as the transition, can alleviate the abrasive drilling get into the instantaneous pressure that produces the canalis spinalis after the canalis spinalis.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is an external structural view of a special grinding bit for an intervertebral foramen mirror according to an embodiment of the present invention;

fig. 2 is a sectional view of a special grinding bit for an intervertebral foramen mirror according to an embodiment of the present invention.

In the figure:

1. a drill stem; 2. a drill bit; 3. a guide channel; 4. a first circular table; 5. a second circular table; 6. a helical cutting edge; 7. sanding surface; 8. an outer convex arc.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The invention will be further described with reference to the drawings and specific examples.

As shown in fig. 1-2, the drill bit special for an interpupillary endoscope of the embodiment of the present invention comprises a drill rod 1 and a drill bit 2 integrally connected with one end of the drill rod 1, wherein the drill rod 1 and the drill bit 2 are internally provided with a guide channel 3 penetrating through the drill rod 1 and the drill bit 2 along the axial direction thereof, the drill bit 2 is sequentially provided with a first circular truncated cone 4 and a second circular truncated cone 5 from one end far away from the drill rod 1, the small end of the first circular truncated cone 4 is in arc transition connection with the guide channel 3, and an outer convex arc 8 is formed at the transition position, the large end of the first circular truncated cone 4 is the small end of the second circular truncated cone 5, a spiral cutting edge 6 is arranged between the large end of the second circular truncated cone 5 and the drill rod 1, and the side wall of the second circular; the sanding surface 7 is formed by carborundum sprayed on the side wall of the second round table 5; the taper of the first round table 4 is larger than that of the second round table 5;

the utility model discloses, puncture target point position with pjncture needle (prior art) at first, replace the pjncture needle for the seal wire (prior art), overlap the utility model discloses a guide way 3 on the seal wire, carry out the abrasive drilling fluting operation along the seal wire, the utility model discloses a when first round platform 4 is used for boring intervertebral foramen, push away spinal cord and nerve root in front of the vertebral plate and dial away, avoid the stimulation and the damage that cause it, first round platform 4 and guide way 3's convex transitional coupling section, outer convex arc 8 can avoid the abrasive drilling fluting in-process fish tail nerve root and pierce through contralateral cortex of bone, lead to the operation failure; second round platform 5 adopts frosting 7 to be used for playing the transition effect when the abrasive drilling fluting operation, can not directly carry out the abrasive drilling fluting operation like prior art's drill bit, easily produces more serious destruction to soft tissue around, and utilizes second round platform 5 as the transition, can alleviate the abrasive drilling get into the instantaneous pressure that produces the canalis spinalis after the canalis spinalis.

Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a special drill bit that grinds of intervertebral foramen mirror, includes drilling rod (1), with drill bit (2) that the one end integral type of drilling rod (1) is connected, drilling rod (1) with the inside of drill bit (2) is equipped with along its axis direction and runs through drill rod (1) with guide way (3) of drill bit (2), its characterized in that: drill bit (2) are kept away from the one end of drilling rod (1) is equipped with first round platform (4), second round platform (5) in proper order, the tip of first round platform (4) with be convex transitional coupling between direction passageway (3) to form evagination arc (8) in transition department, the main aspects of first round platform (4) do the tip of second round platform (5), the main aspects of second round platform (5) with be equipped with spiral cutting edge (6) between drilling rod (1), be equipped with dull polish face (7) on the lateral wall of second round platform (5).

2. The special grinding drill bit for the intervertebral foramen mirror according to claim 1, characterized in that: the sanding surface (7) is formed by carborundum sprayed on the side wall of the second round table (5).

3. The special grinding drill bit for the intervertebral foramen mirror according to claim 1, characterized in that: the taper of the first round platform (4) is larger than that of the second round platform (5).