CN2320210Y

CN2320210Y - Cement gun for bone

Info

Publication number: CN2320210Y
Application number: CN 98201714
Authority: CN
Inventors: 赵毅武; 李�杰
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-02-24
Filing date: 1998-02-24
Publication date: 1999-05-26
Anticipated expiration: 2008-02-24

Abstract

The utility model relates to a glue gun, particularly a bone cement glue gun which belongs to the field of the surgical instrument of the medicine. The utility model comprises a rod and a gun body, a push rod of the gun rod is provided with a tooth trough, a big handle and a small handle of the gun body are respectively provided with a pusher dog, the pusher dog is embedded in the tooth trough of the push rod, a head body of the gun rod can be made into a circular tube shape which is provided with a groove and a notch, and a clamping block can be installed on the push rod. When the utility model is used, a user can use one hand to hold the utility model, and the action of the user acts on one side of the moving direction of the push rod; thus, the bone cement glue can be forcedly actuated to quickly, reliably and accurately inject into a bone cavity; in addition, the flexible operation is realized, and the safety and the sanitation are realized.

Description

Cement gun for bone

This utility model is a particularly Cement gun for bone of a brood lac rifle, relates to medical science surgical instruments field.In bone surgery, for artificial prosthesis is fastened on people's bone, need bone cement glue to be daubed in the bone cavity of corresponding site with hands earlier, this kind operation not only slowly but also be difficult to make bone cement glue fully exuberant among all holes and hole of prosthese and people's bone contact position, thereby directly influence the connection of artificial prosthesis and fix.

The purpose of this utility model provides particularly Cement gun for bone of a brood lac rifle, and this rifle can inject bone cavity with bone cement glue rapidly reliably.

The purpose of this utility model realizes by following technical scheme:

One brood lac rifle is Cement gun for bone particularly, comprise barral of a gun and rifle body, barral of a gun is by cylindrical shape, a body of interior dress piston, afterbody that connects with bulk phase and the push rod (5) that is bearing in afterbody are formed, it is characterized in that: have teeth groove on the push rod, the miniature lever (15) that the rifle body that links to each other with the barral of a gun afterbody includes big handle (11) and can rotate around big arm pivot post (19), embed two pusher dogs (12 of barral of a gun push rod teeth groove, 17), by bearing pin (14,16) be contained in the big of rifle body respectively, on the miniature lever, on another bearing pin (16a) of the bearing pin (14) of big handle and rotating shaft (19) and miniature lever torsion spring 1 (13) is housed respectively, torsion spring 2 (18), torsion spring 3 (20).

It is pipe that a body of barral of a gun can make an end, and the middle part is a semi-circular recesses, and the other end is frustum and with a breach (see the part 1 of Fig. 1 respectively, Fig. 3 is shown in the M of Fig. 2).

On push rod (5), can there be a keyway and suit one to embed the fixture block (7) of this keyway.

This utility model compared with prior art has following advantage:

1, stir pusher dog (17) by the moving miniature lever (15) of plate and promote push rod (5) and extrusion piston with brute force, thus make an intravital bone cement glue can be exuberant fully reliably at bone cavity everywhere.

2, when operation, the resilience of exerting pressure with torsion spring 3 (20) of hand forms successive reciprocating action, and operation is made things convenient for rapidly.

3, the action of exerting pressure is in a side of push rod moving direction, and the observation of bone cement glue filling situation so both had been convenient in the not restriction of drawn stem size, was beneficial to the accurate filling of bone cement glue to desired area again.

Can one hand when 4, this glue rifle uses hold and take, increased the motility of operation.

5, rotating push-rod can make teeth groove leave pusher dog (17,12), thereby from the beginning push rod can promptly be withdrawed from the body, makes things convenient for bone cement glue to replenish to a body.

A body of barral of a gun makes the tubular that has groove and breach, the wall that is filled with bone cement glue is separated with the glue rifle, and make disposable container (seeing shown in Fig. 1 left part chain-dotted line), so both be more convenient for the replenishing fast of bone cement glue, be more convenient for the again safety and sanitation operated and cleaning, the sterilization of glue rifle.

Fixture block is housed on the push rod, can makes the teeth groove location of push rod more convenient, accurate, closer with coincideing of pusher dog, thus make the operation of glue rifle rapider reliable.

The drawing of accompanying drawing is described as follows:

Fig. 1 analyses and observe for barral of a gun and the sketch map of position (shown in the figure right part chain-dotted line) when the big connected position of handle, pusher dog work.

Fig. 2 is that the N of Fig. 1 is to view.

Fig. 3 is the D-D cutaway view of Fig. 1.

Fig. 4 is the E-E cutaway view of Fig. 1.

Fig. 5 is the F-F cutaway view of Fig. 1.

Fig. 6 is the G-G cutaway view of Fig. 1, and chain-dotted line wherein is that projection is looked on the right side of big handle P face.

Fig. 7 is a rifle body cross-sectional schematic.

Fig. 8 is the A-A cutaway view of Fig. 7.

Fig. 9 is the B-B cutaway view of Fig. 7.

Figure 10 is the C-C cutaway view of Fig. 7.

Below in conjunction with accompanying drawing and by embodiment this utility model is further described:

The rifle body is connected by position and the barral of a gun shown in the chain-dotted line of Fig. 1 right part top, two pusher dogs of this moment are in (shown in the chain-dotted line of Fig. 1 right part below) in the corresponding teeth groove that embeds push rod (5), torsion spring 1 (13) on the pusher dog bearing pin (14,16) and torsion spring 2 (18) make pusher dog (12,17) be in the predetermined position of push rod respectively and unlikely overbank simultaneously and it is pressed in the teeth groove.Push rod (5) is bearing in the plug seat (6) that is loaded on afterbody urosome (8) two ends respectively and goes up (shown in Figure 1) with handspike bearing (9), because fixture block (7) the K face (shown in Figure 5) that is sleeved on the push rod and embeds the shaft keyway matches with the projection K face (shown in Figure 4) of plug seat, so the time push rod tooth slot position be under.Dialling changes the spanner (10) that is fixed on push rod one end, make disconnected from each other the opening of K face of fixture block and plug seat projection, teeth groove also is separated from the pusher dog that blocks its position thereupon, thereby can be with the quick to the right pull of push rod, among the bar head (4) on its other end proceeds to the inner chamber of plug seat.Dial to change spanner, make the K face of fixture block and plug seat projection identical again, thus make tooth slot position return back under and pusher dog be stuck in the teeth groove again.

The semi-circular recesses of to fill bone cement glue, the have piston container (2) of (3) being put into a body (1) also is adjacent to the frustum of a body one end, stir push rod once more and it is moved to the left fast, prop up piston (3) until bar head (4), then push rod is dialled and gone to original position the K face is coincide mutually.

During work, press and press miniature lever (15), miniature lever rotates around the rotating shaft (19) of big handle (11), and then pusher dog (17) brute force that make to embed the push rod teeth groove is stirred push rod and is moved to the left (Fig. 7, Fig. 1), loosen miniature lever, under the rebound effect of torsion spring 3 (20), miniature lever is back to original position, pusher dog (17) also simultaneously, and under the rebound effect of torsion spring 2 (18), move in the next teeth groove, the pusher dog (12) that be stuck in all the time under the effect of torsion spring (13) in the teeth groove this moment then stops push rod rollback to the right.Make miniature lever constantly push and loosen, then the bar head of push rod will be always left extrusion piston move ahead, and make bone cement glue inject bone cavity rapidly reliably.Injection finishes and then returns push rod fast and return back to original position, takes out container then and gets final product.

Claims

1, brood lac rifle Cement gun for bone particularly, comprise barral of a gun and rifle body, barral of a gun is by a body of cylindrical shape, interior dress piston, afterbody that connects with bulk phase and the push rod that is bearing in afterbody are formed, it is characterized in that: have teeth groove on the push rod, the miniature lever that the rifle body that links to each other with the barral of a gun afterbody includes big handle and can rotate around big arm pivot post, embed two pusher dogs of barral of a gun push rod teeth groove, be contained in respectively by bearing pin on the large and small handle of rifle body, on the bearing pin of big handle and another bearing pin of rotating shaft and miniature lever torsion spring 1, torsion spring 2, torsion spring 3 be housed respectively.

2, glue rifle according to claim 1 is characterized in that: described rifle rod head body one end is a pipe, and the middle part is a semi-circular recesses, and the other end is frustum and is with a breach.

3, glue rifle according to claim 1 and 2 is characterized in that: have a keyway and suit one to embed the fixture block of this keyway on described push rod.