CN200963438Y

CN200963438Y - Pin tube

Info

Publication number: CN200963438Y
Application number: CNU2006200668682U
Authority: CN
Inventors: 章中群; 袁志会
Original assignee: KELAIRUIDI MEDICAL APPLIANCES CO Ltd GUANGZHOU CITY
Current assignee: KELAIRUIDI MEDICAL APPLIANCES CO Ltd GUANGZHOU CITY
Priority date: 2006-10-31
Filing date: 2006-10-31
Publication date: 2007-10-24
Anticipated expiration: 2016-10-31

Abstract

The utility model relates to a connection, insertion and fixation device, in particular to a bolt cannula for positioning the frame in radiation treatment. The bolt cannula of the utility model is a cylinder shape mid-empty tube, wherein, a step shape heave is arranged on the opening of the pipe. When the bolt cannula is inserted into holes of a frame, the step shape heave is clipped in the hole, thereby fixing the bolt cannula inside the hole of the frame. The utility model can overcome the drawback of easy break of traditional hole, and achieve separation of the cannula and the hole of the frame, and is superior over the foreign separation type cannula in structure, production and operation.

Description

The latch sleeve pipe

Technical field

This utility model relates to grafting, fixture, especially relates to the latch sleeve pipe that is used for radiotherapy location frame.

Background technology

Before radiotherapy, need the radiotherapy position of human body be positioned usually.For example, before radiotherapy was carried out in human body head and neck shoulder position, the patient lay in earlier on the specific base, and this perimeter has through hole; To locate module then is covered on the patient.As shown in Figure 1, the edge of this positioning film 14 is fixed in a location frame 11, position corresponding to base plate through holes on this location frame 11 offers frame through hole 12, after the aligned in position with frame through hole 12 and base plate through holes, again specific latch 13 is inserted, location frame 11 can be lock onto on the base by the certain orientation rotation, then can untie locking state by the rightabout rotation.

Insert in order to solve latch, problem such as fixing and rotation, usually described frame through hole is prolonged downwards and makes a through hole post, its size can be inserted in the base plate through holes just.When the location frame was put on the base, described through hole post inserted in the corresponding base plate through holes, latch can be inserted in the through hole post then, and frame and base are fixed together.

In the said goods, the through hole post is integrated with location frame itself, because the through hole post in use easily because of external force fractures, causes product rejection originally as projecting part, needs to change whole frame.For addressing this problem, more external manufacturers adopt new design to come the instead through-holes post: as shown in Figures 2 and 3, make a kind of latch sleeve pipe, comprise the mouth of pipe 21 and body 22, this position, mouth of pipe 21 both sides offers screwed hole 23, just body 22 is inserted in the frame through hole during use, with the screwed hole 23 of screw by the mouth of pipe 21 two ends sleeve pipe is fixed on the frame of location then, formation is similar to the structure of original through hole post, the location frame can be aimed at base plate through holes then and insert in the base.This design comes down to the separable sleeve pipe of usefulness is replaced inherent through hole post, need not in advance to make sleeve pipe, the situation of having avoided sleeve pipe to fracture easily on the frame of location.But, in this design,, get loose easily because sleeve pipe and frame are isolating, even adopted the fixed mode of screw, but complex structure, make and require high, operation inconvenience, and the sleeve pipe mouth of pipe exposes, be unfavorable for maintenance, therefore still remain improvement.

Summary of the invention

The purpose of this utility model is to provide a kind of latch sleeve pipe of brand-new design, not only solved the defective that the conventional via post fractures easily, can realize separating of sleeve pipe and frame through hole, and in structure, making and operation, all obviously be better than external separation type sleeve.

A kind of latch sleeve pipe described in the utility model, this sleeve pipe is a cylindrical hollow body, mouth of pipe place is provided with step-like projection.

Preferably, there is a ring-type centring ring at described mouth of pipe place, and described step-like projection is located at the below of centring ring.

When described latch sleeve pipe inserted the frame through hole, described step-like projection was stuck in the through hole, and the centring ring of its top then can be adjacent to through-hole wall, thereby described latch sleeve pipe is fixed in the frame through hole.

A concrete design is: the ring-type centring ring at described mouth of pipe place has some breach, and the mouth of pipe of indentation, there splits and is that strip piece, described strip piece are provided with at least one step-like projection.Because there is breach in mouth of pipe place and splits, make and to utilize step-like projection to control the telescopic location of latch easily.When described latch sleeve pipe is inserted the frame through hole, only need exert oneself a little, described step-like projection can be pressed into the screens of correspondence position in the frame through-hole wall; When needing to take out, as long as stir the strip piece at step-like projection place, the mouth of pipe is narrowed down, just can smoothly sleeve pipe be extracted out.

Another concrete design is: the below tube wall of the ring-type centring ring at described mouth of pipe place is provided with the step-like projection of a circle.Only need slightly firmly just described pin bushing pipe clamp to be gone in the frame through hole during installation.When practical application, the optional material that uses and disuses of frame and latch sleeve pipe even sleeve pipe damages, also need not be changed whole frame.

For above-mentioned latch sleeve pipe, described body bottom is a some discrete strip piece pawl, and such structure makes the body bottom have inflatable reducible again performance, the insertion and the location of the latch of therefore being more convenient for.The structure of known latch generally includes latch handle, latch body and fork.Fork is as the position of inserting earlier, often big than latch body, owing to split in the telescopic body of described latch bottom, have certain swelliong power, can hold bigger fork and allow it pass through, and when running into less latch body, inwardly reply contraction to sheet for telescopic, clamp the latch body, only stay fork outside sleeve pipe, thereby latch is positioned in the described latch sleeve pipe.

Latch sleeve pipe described in the utility model is a kind of and the isolating device of frame through hole, has overcome traditional sleeve pipe and through hole are made of one and the defective brought, is easy to install and replacing.Simultaneously, latch sleeve pipe described in the utility model adopts the structure of step-like projection to realize screens, need not extra screw location, has both realized the similar functions of external product, simplified its structure again, made full use of the construction features of frame through hole, had simple and practically, be easy to make, easy to operate advantage, and described latch sleeve pipe can whole insert in the frame through hole, and the mouth of pipe can not expose, and is convenient to maintenance.In sum, latch sleeve pipe described in the utility model can become the improvement succedaneum of domestic existing product and external product.

Description of drawings

Fig. 1 is for being used for the structural representation of localized frame in the radiotherapy.

Fig. 2 is the telescopic vertical section structure sketch map of latch of the prior art.

Fig. 3 is the telescopic vertical view of latch shown in Figure 2.

Fig. 4 is the telescopic vertical section structure sketch map of embodiment one described latch of the present utility model.

Fig. 5 is the telescopic vertical view of latch shown in Figure 4.

Fig. 6 is the structural representation in telescopic another vertical section of latch shown in Figure 4.

Fig. 7 is with the telescopic scheme of installation of latch shown in Figure 6.

Fig. 8 is the telescopic vertical section structure sketch maps of embodiment two described latches of the present utility model.

Fig. 9 is the telescopic vertical view of latch shown in Figure 8.

Figure 10 is with the telescopic scheme of installation of latch shown in Figure 8.

The specific embodiment

Embodiment one:

Latch sleeve pipe described in the utility model, as Fig. 4, Fig. 5 and shown in Figure 6, this sleeve pipe is a cylindrical hollow body 1, the mouth of pipe 2 places are provided with step-like projection 4.There is a ring-type centring ring 3 at the described mouth of pipe 2 places, and described step-like projection 4 is located at the below of centring ring 3.Particularly, the ring-type centring ring 3 at the described mouth of pipe 2 places has the symmetric breach in two places, and the mouth of pipe of indentation, there splits and is that strip piece 5, described strip piece 5 are provided with a step-like projection 4.

Because there is breach in mouth of pipe place and splits, make and to utilize step-like projection to control the telescopic location of latch easily.When described latch sleeve pipe is inserted frame through hole 12, only need exert oneself a little, described step-like projection 4 can be pressed into the screens (as shown in Figure 7) of correspondence position in the frame through-hole wall; When needing to take out, as long as stir the strip piece 5 at step-like projection place, the mouth of pipe is narrowed down, just can smoothly sleeve pipe be extracted out.

Embodiment two:

Latch sleeve pipe described in the utility model, as Fig. 8 and shown in Figure 9, this sleeve pipe is a cylindrical hollow body 1, the mouth of pipe 2 places are provided with step-like projection 4.There is a ring-type centring ring 3 at the described mouth of pipe 2 places, and described step-like projection 4 is located at the below of centring ring 3.Particularly, the below tube wall of the ring-type centring ring 3 at the described mouth of pipe 2 places is provided with the step-like projection 4 of a circle.

As shown in figure 10, only need slightly firmly just described pin bushing pipe clamp to be gone in the frame through hole 12 during installation.When practical application, the optional material that uses and disuses of frame and latch sleeve pipe even sleeve pipe damages, also need not be changed whole frame.

In the foregoing description, all adopted a kind of optimized technical scheme, promptly described body 1 bottom is some discrete strip piece pawls 6.The purpose of this design is for the insertion of the latch of being more convenient for and location.The structure of known latch generally includes latch handle, latch body and fork.Fork is as the position of inserting earlier, often big than latch body, owing to split in the telescopic body of described latch bottom, have certain swelliong power, can hold bigger fork and allow it pass through, and when running into less latch body, inwardly reply contraction to sheet for telescopic, clamp the latch body, only stay fork outside sleeve pipe, thereby latch is positioned in the described latch sleeve pipe.

Claims

1, a kind of latch sleeve pipe is characterized in that: this sleeve pipe is a cylindrical hollow body (1), and the mouth of pipe (2) locates to be provided with step-like projection (4).

2, sleeve pipe according to claim 1 is characterized in that: the described mouth of pipe (2) has been located a ring-type centring ring (3), and described step-like projection (4) is located at the below of centring ring (3).

3, sleeve pipe according to claim 2 is characterized in that: the ring-type centring ring (3) that the described mouth of pipe (2) is located has some breach, and the mouth of pipe of indentation, there splits and is strip piece (5), and described strip piece (5) is provided with at least one step-like projection (4).

4, sleeve pipe according to claim 1 is characterized in that: the below tube wall of the ring-type centring ring (3) that the described mouth of pipe (2) is located is provided with a circle step-like projection (4).

5, according to the described sleeve pipe of one of claim 1 to 4, it is characterized in that: described body (1) bottom is discrete some strip piece pawls (6).