DE202004017282U1 - Set of handle and exchangeable attachment forming surgical tool, comprising specifically shaped joining areas - Google Patents

Abstract

The attachment, which can be a bone rasp, is provided with a rectangular extension not as wide as the main element and comprising linear lateral elevations. The tip (5) of the handle (1) has an opening (8) located at the rear end of two lateral linear elevations (7.1, 7.2). The distance between the elevations (7.1, 7.2) is slightly smaller adjacent to the opening (8) resulting in a firm connection when both parts are joined by inserting the extension into the space (8) between the elevations (7.1, 7.2). A cranked key can be used for separation by pushing its tip through the opening (8) against the extension.

Description

The The invention relates to a surgical device with a holder and a working part interchangeable with the holder.

State of technology

such surgical equipment are in diverse Shape and design known and in the market. These are once equipment, the total one piece are formed, that is, located on a corresponding holder yourself, in one piece connected, a working part, with which only one activity can be performed. This is for example a scalpel.

A different possibility is to form holder and working separately and detachable with each other connect to. There are a variety of means to set the working part on the holder, such as screw, Snap-in connections, snap connections od. Like.

task

Of the present invention is based on the object, a simple but effective connection between the working part and the holder to accomplish.

Solution of task

to solution the task leads that the working part in the position of use provided in the holder Recess partly covered.

These Recess serves to receive a tool, which is configured is that through this tool a bracket between working part and holder is lifted. For simplicity, there is the holder from a clamp, so no additional elements necessary are to cause the holder between the working part and the holder.

Prefers the clamping is positive and positive, but also for one The two compounds themselves are sought after separately protection.

In a simple embodiment a groove is provided in the holder, which on both sides of each an undercut groove is limited. This gutter has this in cross-section a dovetail-like configuration. Further extends the gutter conical, tapering towards the recess.

At The working part is preferably a flag provided whose side edges are shaped so that they are absorbed by the undercut grooves can be. That means, the flag runs also preferably conically tapered to their free end while at least a part of the side edges are configured obliquely. In one preferred embodiment but has each side edges additionally a running transversely to the inclined surface Bevel near the lower surface the flag, the insertion of the working part on the gutter floor along slides. This causes the flag deeper into the gutter inserted and thus the clamping effect can be improved.

The Pushing the flag happens so far, until the flag the recess in the holder at least partially covered. To release the Working part of the holder can now put a tool in the recess so that through the tool pressure on the free end of the Flag exercised becomes. This pressure causes a pushing out of the working part the gutter of the owner.

For example Can the tool as a key be configured, the head is rotatable in the recess. there For example, if the head has an elliptical cross section, so that its effective width is increased when turning the key in the recess.

Now, the working part can be replaced and replaced with another part of the work. The working part can be, for example, a rasp for removing bone material, which finds a wide field of application in surgery, such as, for example, during surgery or correction on the nose by removing cartilage or bone material. It will also help remove bumps and applied to the shaping of bones. In the first place, it is desired to work initially with a coarser division of the teeth of the rasp, which is then replaced by rasps with finer pitches in the course of the activity.

 figure description

Further Advantages, features and details of the invention will become apparent the following description of preferred embodiments and by reference the drawing; this shows in

1 a plan view of an inventive holder for a in the 5 and 6 shown working part;

2 a side view of the holder according to 1 ;

3 an end view of the holder according to 1 ;

4 a plan view of a further embodiment of a holder according to 1 ;

5 a plan view of a working part for insertion into a holder according to the 1 - 4 ;

6 an enlarged cross section through the holder according to 5 along line VI - VI;

7 a plan view of a tool;

8th an end view of the tool according to 7 ,

A holder 1 according to the 1 - 3 is preferably formed from a piece of metal. He has a flat handle part 2 on which in its rear area 3 preferably gold plated.

To the handle part 2 close to the front of a flattened strip 4 on, a pinch 5 has. This clamp 5 consists essentially of a gutter 6 , each on both sides of an undercut groove 7.1 and 7.2 is limited.

The gutter 6 runs into a recess 8th out, including the undercut grooves 7.1 and 7.2 to the recess 8th are open.

The clamping 5 serves to accommodate a working part 9 as it is in the 5 and 6 is shown. It is a rasp for removing bone material. In this rasp 9 closes to an effective area 10 a flag 11 which is slightly conical towards a free end 12 rejuvenated. Both side edges 13.1 and 13.2 this flag 11 are designed as rails. For the most part, each side edge 13 an inwardly extending inclined surface 14 on, near to a lower surface 15 a transverse to the inclined surface 14 running chamfer 16 adjoined.

The Operation of the present invention is as follows:

For use of the inventive surgical equipment, the working part 9 in the clamp 5 plugged in. This happens because the flag 11 into the gutter 6 is introduced, the lower surface 15 on a gutter floor 17 slides.

The rail-like side edges 13.1 and 13.2 glide in the undercut grooves 7.1 and 7.2 , wherein this also conical direction of the recess 8th to each other. The deeper the working part 9 thus in the gutter 6 is introduced, the more the side edges become wedged 13.1 and 13.2 in the undercut grooves 7.1 and 7.2 , where the chamfer 16 In addition, make sure to compensate, so that the flag 11 very far with increasing clamping in the gutter 6 can be inserted. This insertion happens so far, until the flag 11 a part of the recess 8th covered.

Shall now the working part 9 be replaced with another, so the clamping bracket must be repealed. This is done by a tool like this in the 7 and 8th is shown. This is a key 18 who has a flattened head 19 having. This flattened head 19 has a width b which is larger than the uncovered area of the recess 8th , Preferably, the width b can be about the width b _{1 of} the recess 8th correspond.

Now this head 19 in the from the flag 11 uncovered part of the recess 8th plugged and rotated, so takes place when turning a pressure on the free end 12 the flag 11 so that the working part 9 out of the gutter 6 is pushed out. Now, another desired working part in the gutter 6 be inserted.

The embodiment of the inventive device according to 4 , here only one holder 1.1 is different from the one after the 1 - 3 in that a clamping on both sides 5.1 and 5.2 is provided. Thus, in this holder 1.1 two different working parts are used.

Claims (9)

Surgical equipment with a holder ( 1 . 1.1 ) and one with the holder ( 1 . 1.1 ) interchangeable working part ( 9 ); characterized in that the working part in the position of use in a holder ( 1 . 1.1 ) provided recess ( 8th ) partially covered. Surgical device according to claim 1, characterized in that the working part ( 9 ) on the holder ( 1 . 1.1 ) by a clamping ( 5 . 5.1 . 5.2 ) is held. Surgical device according to claim 2, characterized in that the clamping ( 5 . 5.1 . 5.2 ) Force and preferably also positively. Surgical device according to one of claims 1 - 3, characterized in that on the holder ( 1 . 1.1 ) at least one undercut groove ( 7.1 . 7.2 ) is provided. Surgical device according to claim 4, characterized in that on the holder ( 1 . 1.1 ) a gutter ( 6 ) with bilateral undercut grooves ( 7.1 . 7.2 ) is provided, which is the inclusion of a flag ( 11 ) at the working part ( 9 ) serve. Surgical apparatus according to claim 5, characterized in that the flag ( 11 ) at least one rail-like side edge ( 13.1 . 13.2 ) having an inwardly inclined inclined surface ( 14 ) and a transverse chamfer ( 16 ) having. Surgical device according to at least one of claims 1 - 6, characterized in that the holder ( 1.1 ) a clamping at both ends ( 5.1 . 5.2 ) having. Surgical device according to at least one of claims 1 - 7, characterized in that in the recess ( 8th ) a key ( 18 ) can be used. Surgical apparatus according to claim 8, characterized in that the key ( 18 ) in the recess ( 8th ) is rotatable, wherein it has a width (b) which is greater than the uncovered width of the recess ( 8th ).