CN211560245U

CN211560245U - Medical drill bit with soft tissue protection effect

Info

Publication number: CN211560245U
Application number: CN201921290913.6U
Authority: CN
Inventors: 李俊宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-10
Filing date: 2019-08-10
Publication date: 2020-09-25
Anticipated expiration: 2029-08-10

Abstract

The utility model relates to a medical drill bit with soft tissue guard action mainly includes: the device comprises a front drill rod, a drill bit, a connecting part, a riveting groove, a spring, a riveting head, an anti-falling cushion block, a rear drill rod, a fixing part and a marking line. The connecting part is a hollow cylindrical structure inside, and the inside can contain a spring and a riveting head and an anti-falling cushion block of a rear drill rod. The top of the connecting part is provided with a hexagonal sunken structure, namely a riveting groove, the head of the rear drill rod is provided with a hexagonal protruding structure, namely a riveting head, and the hexagonal sunken structure, the riveting groove and the hexagonal protruding structure can be riveted together. Be provided with high strength spring in the connecting portion, be in slight compression state, can make riveting recess and riveting head separation. The utility model discloses can avoid high-speed rotatory drill bit to cause the damage of soft tissue structures such as blood vessel, nerve, tendon after breaking through the sclerotin, cause serious medical accident.

Description

Medical drill bit with soft tissue protection effect

Technical Field

The utility model relates to a medical drill bit with soft tissue protection effect belongs to surgical operation apparatus equipment field.

Background

The drill bit is an essential tool in surgical operations, particularly in internal fracture fixation operations of orthopedics and craniotomy operations of neurosurgery. When drilling into a bone with a drill, a surgeon is required to forcibly push the drill against the bone and drill under pressure. After the drill bit completely breaks through the sclerotin, the electric drill falls into the air, and a section of drill bit can enter the soft tissue on the opposite side. During the period before the operator releases the electric drill trigger, the drill bit rotating at high speed can cause damage to surrounding soft tissues, even important soft tissue structures such as blood vessels, nerves, tendons and the like, and serious medical accidents are caused. Particularly for doctors with shallow annual capital, the falling feeling of the drill bit after the drill bit breaks the bone is lacked, and the drill bit which rotates at high speed all the time even drills into the extremely deep soft tissue, thereby causing the serious consequence which is difficult to be saved.

Disclosure of Invention

In order to solve the problem, the utility model provides a drill bit with soft tissue guard action. When the drill is used for drilling holes in bones, the drill can stop rotating immediately after the bone is punctured, so that the damage to soft tissue structures such as blood vessels, nerves, tendons and the like is avoided.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model discloses medical drill bit with soft tissue guard action includes ten parts: the device comprises a front drill rod, a drill bit, a connecting part, a riveting groove, a spring, a riveting head, an anti-falling cushion block, a rear drill rod, a fixing part and a marking line. The drill bit is spiral and has a sharp edge, so that drilling is facilitated to penetrate through bone. Leading drilling rod afterbody is provided with connecting portion, and connecting portion are inside hollow cylindric structure, and the spring and the riveting head and the anticreep cushion of rearmounted drilling rod can be held to the inside.

The top of the connecting part is provided with a hexagonal sunken structure, namely a riveting groove, the head of the rear drill rod is provided with a hexagonal protruding structure, namely a riveting head, and the hexagonal sunken structure, the riveting groove and the hexagonal protruding structure can be riveted together. The rear drill rod is provided with a marking line close to the connecting part, and when the riveting groove and the riveting head are completely riveted together, the marking line just sinks into the connecting part. Be provided with high strength spring in the connecting portion, be in slight compression state, can make riveting recess and riveting head separation.

The far end of the rear drill rod is provided with a cylindrical protrusion, namely an anti-falling cushion block, so that the rear drill rod cannot slide out of the connecting part. Under the effect of anticreep cushion, the biggest separation distance of riveting recess and riveting head is 4 mm. The rear drill rod is provided with a fixing part at the near end, which is a connecting part with the electric drill and is in a triangular prism structure, so that the rear drill rod is conveniently and tightly connected with the electric drill.

In the work, when needing to carry out the drilling to a certain skeleton, the drill bit supports on the sclerotin surface, and the operation doctor holds the electric drill and pressurizes hard to the position of adjusting handheld electric drill, makes the mark line sink in the connecting portion just, and at this moment, riveting recess and riveting head are together completely riveted, and the spring is in tense state. And starting the electric drill, and cutting the bone by the drill bit until the bone is penetrated. When the drill bit penetrates through a bone, no hard bone is blocked in front of the drill bit, the riveting groove is separated from the riveting head immediately under the action of the elastic force of the spring, the rear drill rod connected with the electric drill is in an idle drilling state, and the front drill rod stops rotating immediately under the action of the friction force of the bone, so that soft tissue structures such as peripheral blood vessels, nerves, tendons and the like are prevented from being damaged due to the drill bit rotating at a high speed.

The utility model discloses creative design out can make the drill bit stop rotatory structure promptly after breaking through the sclerotin to can obtain following beneficial effect: 1. the damage of soft tissue structures such as blood vessels, nerves, tendons and the like caused by the fact that a drill bit rotating at a high speed breaks through bone is avoided, and serious medical accidents are caused; 2. the electric drill becomes safer and more reliable, greatly reduces the learning curve and the operation difficulty of young surgeons, and improves the medical quality.

Drawings

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

Fig. 1 is a schematic structural diagram of the present invention. In the figure: 1. a front drill rod; 2. a drill bit; 3. a connecting portion; 4. riveting the groove; 5. a spring; 6. riveting the head; 7. an anti-drop cushion block; 8. a drill rod is arranged at the rear part; 9. a fixed part; 10. and marking lines.

Fig. 2 is a schematic cross-sectional view of the riveting groove 4 of the present invention.

Fig. 3 is a schematic cross-sectional view of the fixing portion 9 of the present invention.

Detailed Description

In order to further understand the contents, features and functions of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:

please refer to fig. 1: the utility model discloses medical drill bit with soft tissue guard action includes: 1. a front drill rod; 2. a drill bit; 3. a connecting portion; 4. riveting the groove; 5. a spring; 6. riveting the head; 7. an anti-drop cushion block; 8. a drill rod is arranged at the rear part; 9. a fixed part; 10. and marking lines.

The drill 2 is spiral and has a sharp edge, so that drilling is facilitated to penetrate through bone. The tail of the front drill rod 1 is provided with a connecting part 3, the connecting part 3 is of an internal hollow cylindrical structure, and a riveting head 6 and an anti-dropping cushion block 7 of a spring 5 and a rear drill rod 8 can be accommodated in the connecting part.

The top of the connecting part 3 is provided with a hexagonal sunken structure, namely a riveting groove 4 (figure 2 is a cross section schematic diagram of the structure), the depth of the groove is about 2mm, the head of the rear drill rod 8 is provided with a hexagonal protruding structure, namely a riveting head 6, and the riveting groove 4 and the riveting head 6 can be mutually riveted and connected together. The rear drill rod 8 is provided with a marking line 10 close to the connecting part 3, and when the riveting groove 4 and the riveting head 6 are completely riveted together, the marking line 10 just sinks into the connecting part 3. The connecting part 3 is provided with a high-strength spring 5 in a slight compression state, so that the riveting groove 4 can be separated from the riveting head 6.

The far end of the rear drill rod 8 is provided with a cylindrical protrusion, namely an anti-falling cushion block 7, so that the rear drill rod 8 cannot slide out of the connecting part 3. Under the action of the anti-falling cushion block 7, the maximum separation distance between the riveting groove 4 and the riveting head 6 is 4 mm. The fixing part 9 is arranged at the near end of the rear drill rod 8, is a connecting part with the electric drill, is in a triangular prism structure (the cross section of the structure is shown in the schematic diagram in figure 3), and is convenient to be tightly connected with the electric drill.

In the work, when needing to carry out the drilling to a certain skeleton, the drill bit supports on the sclerotin surface, and the operation doctor holds the electric drill with the hand and pressurizes hard to adjust the position of holding the electric drill, makes mark line 10 sink in connecting portion 3 just, and at this moment, riveting recess 4 and riveting head 6 are riveted together completely mutually, and spring 5 is in tense state. The electric drill is started, and the drill bit 2 cuts the bone until the bone is penetrated. When the drill bit 2 penetrates through a bone, no hard bone is blocked in front, the riveting groove 4 is immediately separated from the riveting head 6 under the action of the elastic force of the spring 5, the rear drill rod 8 connected with the electric drill is in a hollow drilling state, and the front drill rod 1 immediately stops rotating under the action of the friction force of the bone, so that the soft tissue structures such as peripheral blood vessels, nerves, tendons and the like are prevented from being damaged due to the drill bit rotating at high speed.

Naturally, the invention is capable of other embodiments, and various modifications and changes can be made by those skilled in the art without departing from the spirit of the invention, but these modifications and changes are intended to fall within the scope of the appended claims.

Claims

1. A medical drill bit with soft tissue protection function is characterized in that: the drilling tool comprises ten parts including a front drill rod, a drill bit, a connecting part, a riveting groove, a spring, a riveting head, an anti-falling cushion block, a rear drill rod, a fixing part and a marking line, wherein the connecting part is arranged at the tail part of the front drill rod and is of a hollow cylindrical structure, the spring, the riveting head and the anti-falling cushion block of the rear drill rod can be accommodated in the connecting part, a hexagonal concave structure, namely the riveting groove, is arranged at the top part of the connecting part, a hexagonal convex structure, namely the riveting head, is arranged at the head part of the rear drill rod and can be riveted and connected together, the marking line is arranged at the position, close to the connecting part, of the rear drill rod, when the riveting groove and the riveting head are completely riveted together, the marking line just sinks into the connecting part, a high-strength spring is arranged in the connecting part and is in a slight compression state, the riveting groove can be separated from the riveting head, and a, make rearmounted drilling rod can't follow roll-off in the connecting portion, under the effect of anticreep cushion, the biggest separation distance of riveting recess and riveting head is 4mm, and rearmounted drilling rod near-end is provided with the fixed part, is the position of being connected with the electric drill, and it is the triangular prism structure, is convenient for with electric drill zonulae occludens.