CN210354830U

CN210354830U - Accurate direction screw tap of medical orthopedics

Info

Publication number: CN210354830U
Application number: CN201920827337.8U
Authority: CN
Inventors: 陈立军; 褚武; 薛防震; 施银辉; 岑萌
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-03
Filing date: 2019-06-03
Publication date: 2020-04-21
Anticipated expiration: 2029-06-03

Abstract

The utility model relates to an accurate direction screw tap of medical orthopedics, this accurate direction screw tap of medical orthopedics include handle and screw tap body, and screw tap body and handle detachably connect, and the screw tap body including with treat the smooth direction section of tapping through-hole assorted and be used for carrying out the screw thread section of tapping to this through-hole, smooth direction section is located the below of screw thread section. The utility model has the advantages that: the design of smooth direction section on the screw tap body has better accurate guidance quality for traditional screw tap, and convenient operation has reduced the uncertainty when operating, and but to a certain extent greatly reduced to patient's stimulus, has alleviateed patient's misery.

Description

Accurate direction screw tap of medical orthopedics

Technical Field

The utility model relates to an orthopedic surgery instrument field especially relates to a accurate direction screw tap of medical orthopedics.

Background

In an orthopedic surgery, bones are often required to be fixed, and many times, surgical operations of screw implantation are performed as required, referring to fig. 4, the implantation operations require that a through hole 400 is drilled on a backbone 300 to be operated by using a hand drill, a screw tap is used for tapping a thread on the drilled hole, and finally the screw to be implanted is screwed into the tapped threaded hole, and the tapped thread deviates from an original drilling hole due to a certain gradient from bottom to top during tapping, so that the surgical operation fails and pains are brought to patients.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the current situation to prior art provides a tapping can not skew accurate direction screw tap of medical orthopedics.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides an accurate direction screw tap of medical orthopedics, includes handle and screw tap body, screw tap body and handle detachably connect, the screw tap body including with treat smooth direction section of tapping through-hole assorted and be used for carrying out the screw thread section of tapping to this through-hole, smooth direction section is located the below of screw thread section.

In order to ensure accurate guiding of the guide rod, the diameter of the smooth guiding section is smaller than that of the threaded section.

In order to ensure that the guide rod slides smoothly in the through hole to be tapped, the outer surface of the smooth guide section is a smooth plane.

In order to facilitate tapping, the screw is timely screwed and fastened on the backbone, and a screwdriver head matched with the screw to be implanted is arranged at the lower end of the screw tap body.

In order to facilitate connection of the screw tap body and the handle, the handle comprises a vertical rod part and a transverse rod part which is convenient to screw, the transverse rod part is located at one end of the vertical rod part, the other end of the vertical rod part is provided with a mounting sleeve used for connecting the original screw tap body, and correspondingly, the upper end of the screw tap body is provided with a tip matched with the mounting sleeve.

In order to ensure that the handle and the tap body cannot rotate relatively during tapping, a limiting structure for limiting the rotation of the handle relative to the tap body is arranged at the joint surface of the handle and the tap body.

Specifically, limit structure is for forming at the installation cover internal surface and the cross section is polygonal socket, correspondingly, the cross section of end is polygonal and with the socket phase-match.

Compared with the prior art, the utility model has the advantages of: this accurate direction screw tap of medical orthopedics includes handle and screw tap body, foretell screw tap body including with treat the smooth guide section of tapping through-hole assorted and be used for carrying out the screw thread section of tapping to this through-hole, and smooth guide section is located the below of screw thread section. Above-mentioned smooth guide section's design has better accurate guidance quality for traditional screw tap, and convenient operation has reduced the uncertainty when operating, and but to a certain extent greatly reduced to patient's stimulus, has alleviateed patient's misery.

Drawings

Fig. 1 is a schematic view of the overall structure of a guide tap according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of a guide tap according to an embodiment of the present invention;

FIG. 3 is an exploded view of the pilot tap of FIG. 2 at another angle;

FIG. 4 is a schematic diagram of a conventional tap with an angular inclination when mated with a through hole

Fig. 5 is a schematic diagram of the tapping operation sequence in operation from left to right.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 5, in a preferred embodiment of the present invention, the medical orthopedic precision guide tap comprises a handle 1 and a tap body 2, before the medical precision guide tap is used, a through hole 400 is drilled in a backbone 300 by hand, since there is no special processing, generally, the inner wall of the through hole 400 is a relatively smooth plane, the tap body 2 is used to process the through hole 400, specifically, the tap body 2 comprises a smooth guide section 21 and a threaded section 22, the smooth guide section 21 is located below the threaded section 22, wherein the threaded section 22 plays a role in tapping, the smooth guide section 21 is matched with the through hole 400 in diameter, the smooth guide section 21 is located below the threaded section 22 to facilitate the smooth guide section 21 to be in sliding fit with the through hole 400 in one step, so that due to the guiding of the smooth guide section 21, the threaded section 22 does not deviate from the original drilling direction when tapping the inner wall of the through hole 400, and in order to ensure that the guided threaded section 22 can still tap the inner wall of the through hole 400, the diameter of the smooth guiding section 21 is smaller than that of the threaded section 22, and in order to facilitate the guiding of the smooth guiding section 21, the outer surface of the smooth guiding section 21 is a smooth plane. Due to the fact that the diameters of the bone to be operated on are different, the screw tap body 2 with different proportions of the smooth guiding section 21 and the threaded section 22 can be manufactured in advance to meet the requirements of the operation.

In the present embodiment, the tap body 2 and the handle 1 are detachably connected, specifically, the handle 1 includes a vertical rod portion 11 and a horizontal rod portion 12 for facilitating screwing, the horizontal rod portion 12 is located at one end of the vertical rod portion 11, the other end of the vertical rod portion 11 is provided with a mounting sleeve 13 for connecting the tap body 2, and correspondingly, the upper end of the tap body 2 is provided with a head 23 adapted to the mounting sleeve 13.

In order to realize that the tap body 1 can synchronously rotate along with the handle when the handle 1 is rotated, a limiting structure for limiting the rotation of the handle 1 relative to the tap body 2 is arranged at the joint surface of the handle 1 and the tap body 2, the limiting structure in the embodiment is a socket 131 which is formed on the inner surface of the mounting sleeve 13 and has a polygonal cross section, and correspondingly, the cross section of the end 23 is polygonal and is matched with the socket 131. Of course, the limiting structure is not limited to this form, and may be a structure with a cross section of a semi-circle or the like matching with each other, as long as the synchronous rotation of the two is ensured, or may be a form in which a positioning pin penetrates through the mounting sleeve 13 and the end head 23.

In the present embodiment, the lower end portion of the tap body 2 is provided with a screwdriver bit 3 for matching with a screw 200 to be implanted.

Referring to fig. 5, during an operation, a through hole 400 which is vertically penetrated is drilled on a backbone 300 by a hand drill, the depth of the hole is measured by a measuring instrument, then a screw tap body 2 with a corresponding size is taken out, and a tapping operation is performed, because of the existence of the smooth guide section 21, the tapping is performed for the first time only in a half-way, generally speaking, after 2-3 circles of threads are tapped, the angle of the threads can be formed, at this time, the guide screw tap can be taken down, the conventional screw tap 100 is used for performing full-way tapping along the half-way threads tapped by the guide screw tap, and after the full-way tapping is finished, required screws are screwed along the tapped threads, and because the lower end part of the screw tap body 2 is provided with a screw driver bit 3 which is matched with a screw 200 to be.

Claims

1. The utility model provides a accurate guide screw tap of medical orthopedics which characterized in that: the tapping screw tap comprises a handle (1) and a screw tap body (2), wherein the screw tap body (2) is detachably connected with the handle (1), the screw tap body (2) comprises a smooth guide section (21) matched with a through hole (400) to be tapped and a thread section (22) used for tapping a backbone (300), and the smooth guide section (21) is located below the thread section (22).

2. The medical orthopedic precision guide tap according to claim 1, characterized in that: the diameter of the smooth guide section (21) is smaller than that of the threaded section (22).

3. The medical orthopedic precision guide tap according to claim 1, characterized in that: the outer surface of the smooth guide section (21) is a smooth plane.

4. The medical orthopedic precision guide tap according to claim 1, characterized in that: the lower end part of the tap body (2) is provided with a screwdriver head (3) which is used for being matched with a screw (200) to be implanted.

5. The medical orthopedic precision guide tap according to any one of claims 1-4, characterized in that: the handle (1) comprises a vertical rod part (11) and a transverse rod part (12) convenient to screw, the transverse rod part (12) is located at one end of the vertical rod part (11), the other end of the vertical rod part (11) is provided with a mounting sleeve (13) used for connecting an original screw tap body (2), and correspondingly, the upper end of the screw tap body (2) is provided with a tip (23) matched with the mounting sleeve (13).

6. The medical orthopedic precision guide tap according to claim 5, characterized in that: and a limiting structure for limiting the rotation of the handle (1) relative to the screw tap body (2) is arranged at the joint surface of the handle (1) and the screw tap body (2).

7. The medical orthopedic precision guide tap according to claim 6, characterized in that: the limiting structure is a socket (131) which is formed on the inner surface of the mounting sleeve (13) and has a polygonal cross section, and correspondingly, the cross section of the end head (23) is polygonal and is matched with the socket (131).