CN202982131U

CN202982131U - Auxiliary drill for craniotomy

Info

Publication number: CN202982131U
Application number: CN 201220324192
Authority: CN
Inventors: 孟凡刚; 张建国; 葛燕; 张鑫; 隋梅燕; 郝红伟; 考长青; 葛明; 张凯; 杨岸超; 胡文瀚; 马羽; 刘焕光; 陈宁; 刘崇; 赵蕊
Original assignee: 孟凡刚
Priority date: 2012-06-24
Filing date: 2012-06-24
Publication date: 2013-06-12
Anticipated expiration: 2022-06-24

Abstract

The utility model relates to an auxiliary drill for craniotomy. In the craniotomy, some fixing devices which comprise an anchoring ring that contacts with a skull and an electrode cap that covers the anchoring ring are required commonly, thereby fixing an electrode, a lead or conduit for connection between the inner part of the skull and the outer part of the skull. According to a traditional method, the fixing devices are projected outside the skull and protrude from the position, thereby easily causing skin damage and further causing exposure of the electrode, the lead or the conduit; and furthermore outer injury of the skin is easily caused. The auxiliary drill reduces projection amplitude of the fixing devices. The fixing devices are parallel with the skull or lower than the plane of the skull, thereby reducing skin injury probability caused by the fixing devices; better protecting the electrode, the lead or conduit and skin; reducing risk of electrode, lead or conduit replacement caused by skin damage infection; and better reducing pain and economic load of the patient.

Description

The auxiliary brill that operation of opening cranium is used

Technical field

This utility model belongs to medical apparatus and instruments, and the auxiliary brill used of a kind of operation of opening cranium specifically can be after drill for craniotomy bores skull, then gets out a circular groove with placing fixer around the bone hole.

Background technology

In operation of opening cranium, often need some fixtures (as the grappling circle that contacts with skull and the electrode cap that is covered in the grappling circle), with fixing electrode, wire or conduit outside intracranial is connected to cranium, no matter drill for craniotomy commonly used is bitbrace or electric drill, and boring the cranium diameter is all that the skull lower-upper length is the same, thereby these fixtures are protruded from outside skull, make this place protuberance, thereby cause that easily skin injury sends a telegraph the utmost point, wire or conduit and expose, also easily make skin be subject to wound.

The utility model content

the purpose of this utility model is in order to overcome defects, the auxiliary brill that provides a kind of operation of opening cranium to use, it has simple to operate, safe and convenient to use, bore the skull groove diameter, the degree of depth can be decided according to drill bit and unbearable diameter and the unbearable length that protrudes from drill bit, and these parameters can be made into different size according to specific requirement, use cost is low, the amplitude of fixture protuberance is reduced, or parallel with skull, reduced the probability that fixture causes skin injury, can better shield electrode, wire or conduit and skin, minimizing causes changing electrode because skin injury infects, the danger of wire or conduit, thereby can better reduce patient's misery and financial burden.

The purpose of this utility model is achieved through the following technical solutions: the auxiliary brill (Fig. 1) that a kind of operation of opening cranium is used, formed by drill bit (1), unbearable (2), brill body (3), drill body junction (4), the unbearable outer drill bit (1) that is with, the brill tooth number of drill bit (1) is 2-8, drill bit (1) can be connected, dismantle with brill body (3) by screw, or and brill body (3) one.

Fig. 2 is the grappling circle (top view) that contacts with skull, and Fig. 3 is the side view of grappling circle.The grappling astragal has two circular holes (5), groove (6) and screw thread (8), and there is space (7) centre.The grappling circle itself is with flexible, vascular forceps can be passed through circular hole (5) and clamp the grappling circle, is put in after the grappling circle is diminished in the bone hole, unclamps vascular forceps, the grappling circle becomes large by the elasticity of self, and screw thread (8) touches and makes the grappling circle be fixed in skull with bone hole close proximity.The groove of grappling circle (6) but electrodes, wire or conduit.

Fig. 4 is and the electrode cap that is fixed in the grappling circle (top view) that Fig. 5 is the side view of electrode cap.Electrode cap can be covered in above the grappling circle, and electrode is played a protective role.During the coated electrode cap, the protuberance of electrode cap (9) is positioned in the space (7) of grappling circle, makes grappling circle and electrode cap closely fixing.

Fig. 6 is the fixedly figure of traditional method, and the probability of electrode, wire, conduit and skin damage is larger.Fig. 7 is the fixedly figure after application this utility model, and the probability of electrode, wire, conduit and skin damage obviously reduces.

After fixing, electrode cap (12) is covered on grappling circle (11), and grappling circle (11) is closely fixing with skull (10).

The beneficial effects of the utility model are very obvious, and the one, reasonable in design, make simple, easy to operate, parameter is adjustable, and the amplitude of fixture protuberance is reduced, or parallel with skull, reduced the probability that fixture causes skin injury, can better shield electrode, wire or conduit and skin; The 2nd, time saving and energy saving, reusable, use cost is low, has greatly reduced postoperative after effect, avoids contingency to occur, and guarantees medical safety, reduces patient's burden, has certain promoting the use of and social economic value in the operation of opening cranium process.

Description of drawings

Fig. 1 is main TV structure schematic diagram of the present utility model; Fig. 2 is the top view of the grappling circle that contacts with skull; Fig. 3 is the side view of grappling circle; Fig. 4 is the top view that is covered in grappling circle upper electrode cap; Fig. 5 is the side view of electrode cap; Fig. 6 is the fixedly figure of traditional method; Fig. 7 is the fixedly figure after application this utility model.

The specific embodiment

The auxiliary brill that a kind of operation of opening cranium is used, formed by drill bit (1), unbearable (2), brill body (3), drill body junction (4), the outer drill bit (1) that is with of unbearable (2), the diameter of drill bit (1) is more than or equal to 22mm, the diameter of unbearable (2) is less than or equal to 14mm, the length that unbearable (2) protrude from drill bit (1) is less than or equal to 3mm, the brill tooth number of drill bit (1) is 2-8, drill bit (1) can be connected, dismantle with brill body (3) by screw, or and brill body (3) one.

When this utility model used, in the operation of implanting at the brain depth electrode, after boring saturating skull with conventional drill for craniotomy, the definite thickness that bores cranium with this utility model of thickness according to electrode cap top was generally 3mm.Because the race diameter on electrode cap top is generally 22mm, so the diameter of drill bit (1) generally should be a bit larger tham or equal 22mm.The diameter of drill bit also can be adjusted according to the size of fixture, and when changing to Stimlock as fixture, bit diameter can correspondingly be adjusted.Because the race diameter of electrode cap bottom is generally 14mm, so the diameter of unbearable (2) is less than or equals 14mm, due to illness the people is easy because of the thickness of skull, therefore protruding from the length of drill bit (1), unbearable (2) are less than or equal to 3mm, in order to avoid long and hurt cerebral tissue, guarantee safety, the brill tooth of drill bit (1) is 2-8, and operative doctor can better be controlled velocity of rotation.

With reference to preferred implementation of the present utility model, this utility model is had been described in detail.Yet what it will be understood by those skilled in the art that is, can be in the situation that do not deviate from principle of the present utility model and spirit is made change to these embodiments.

Claims

1. the auxiliary brill that operation of opening cranium is used, is characterized in that, the unbearable outer drill bit that is with.

2. the auxiliary brill used of operation of opening cranium according to claim 1, is characterized in that, the diameter of drill bit is more than or equal to 22mm, and unbearable diameter is less than or equal to 14mm, and the unbearable length that protrudes from drill bit is less than or equal to 3mm.

3. the auxiliary brill used of operation of opening cranium according to claim 1, is characterized in that, the brill tooth number of drill bit is 2～8.

4. the auxiliary brill used of operation of opening cranium according to claim 1, is characterized in that, drill bit can by screw with bore body and be connected, dismantle, or with brill body one.