CN211804455U

CN211804455U - Processing jig for high-precision welding of medical instruments

Info

Publication number: CN211804455U
Application number: CN201921984085.6U
Authority: CN
Inventors: 李建民; 沈远
Original assignee: Jiangsu Kesen Medical Devices Co ltd
Current assignee: Jiangsu Kesen Medical Devices Co ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-10-30
Anticipated expiration: 2029-11-18

Abstract

The utility model discloses a processing jig for high-precision welding of medical instruments, which comprises a mandrel, a first sleeve, a second sleeve and a clamping jaw, wherein the first sleeve and the second sleeve are sequentially sleeved on the clamping jaw, and one end of the clamping jaw extends out of the second sleeve; the mandrel further comprises a clamping part and a thread part continuously provided with a thread groove, the clamping part is embedded into the clamping jaw, and the thread groove of the thread part is used for embedding a spring; the outer pipe of the thread groove is sleeved on the mandrel, the spring is connected with the inner wall of the outer pipe to form threads, and one end of the outer pipe is embedded into the chuck extending out of the second sleeve. The utility model discloses both be convenient for processing, can not produce the injury to the outer tube, can guarantee the precision of processing again, guarantee or internal screw thread pitch etc. have good uniformity.

Description

Processing jig for high-precision welding of medical instruments

Technical Field

The utility model relates to a high-accuracy welding of medical instrument is with processing tool belongs to the internal thread processing field.

Background

In minimally invasive surgery, medical materials for treatment need to be placed at a wound site due to internal tissue trauma, while such degradable medical materials are fixed in muscle tissue using degradable nails. In the operation process, during this kind of nail need be followed the operation rifle of being equipped with a plurality of nails and screwed out and squeeze into the human body, in order to guarantee that the nail smoothly enters into the assigned position, then require the sheathed tube precision of placing the nail in this operation rifle very high, because the nail adopts screw-thread fit's mode with the sleeve pipe to fix in the sleeve pipe, so require the inside pitch of sleeve pipe to keep unanimous, nevertheless because the sheathed tube pipe wall is thinner, can't process out the very high internal thread of precision, seriously influence going on of operation.

Disclosure of Invention

The utility model aims at providing a high-accuracy welding of medical instrument is with processing tool, this high-accuracy welding of medical instrument is with processing tool both be convenient for process, can not produce the injury to the outer pipe, can guarantee the precision of processing again, guarantee or internal screw thread pitch etc. have good uniformity.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a processing jig for high-precision welding of medical instruments is used for processing a threaded pipe, wherein the threaded pipe comprises an outer pipe and threads positioned on the inner wall of the outer pipe;

the processing jig comprises a mandrel, a first sleeve, a second sleeve and a clamping jaw, wherein the first sleeve and the second sleeve are sequentially sleeved on the clamping jaw, and one end of the clamping jaw extends out of the second sleeve; the mandrel further comprises a clamping part and a thread part continuously provided with a thread groove, the clamping part is embedded into the clamping jaw, and the thread groove of the thread part is used for embedding a spring;

the outer pipe of the thread groove is sleeved on the mandrel, the spring is connected with the inner wall of the outer pipe to form a thread, and one end of the outer pipe is embedded into the clamping jaw extending out of the second sleeve.

The further improved scheme in the technical scheme is as follows:

1. in the above scheme, the thread grooves are arranged at equal intervals.

2. In the above scheme, one end of the thread part, which is opposite to the clamping part, is provided with an end head part.

3. In the above scheme, the spring is connected with the inner wall of the outer tube through laser welding.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

the utility model discloses medical instrument high accuracy welding is with processing tool, it with spring coupling on the outer tube inner wall, realized the purpose of processing the screw thread on not only thin but also soft pipe wall, both be convenient for process, can not produce the injury to the outer tube, can guarantee the precision of processing again, guarantee or internal screw thread pitch etc. have good uniformity.

Drawings

FIG. 1 is a schematic structural view of a processing jig for high-precision welding of medical instruments according to the present invention;

FIG. 2 is a schematic view of the structure of the central spindle of the processing jig for high-precision welding of medical instruments of the present invention;

fig. 3 is the utility model discloses high-accuracy welding is with local structure cross-sectional view of screwed pipe of processing tool.

In the above drawings: 1. a mandrel; 101. a clamping portion; 102. a thread groove; 103. a threaded portion; 104. an end portion; 2. a first sleeve; 3. a second sleeve; 4. a clamping jaw; 5. a spring; 10. a threaded pipe; 11. an outer tube.

Detailed Description

In the description of this patent, it is noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The meaning of the above terms in this patent may be specifically understood by those of ordinary skill in the art.

Example 1: a processing jig for high-precision welding of medical instruments is used for processing a threaded pipe 10, wherein the threaded pipe 10 comprises an outer pipe 11 and threads positioned on the inner wall of the outer pipe 11;

the processing jig comprises a mandrel 1, a first sleeve 2, a second sleeve 3 and clamping jaws 4, wherein the first sleeve 2 and the second sleeve 3 are sequentially sleeved on the clamping jaws 4, one end of each clamping jaw 4 extends out of the second sleeve 3, the clamping jaw 4 area positioned in the first sleeve 2 is used for clamping the mandrel 1, and the clamping jaw 4 area extending out of the second sleeve 3 is used for clamping an outer tube 11 of a threaded tube 10;

the mandrel 1 further comprises a clamping part 101 and a thread part 103 with a thread groove 102 continuously formed, the clamping part 101 is embedded into the clamping jaw 4, and the thread groove 102 of the thread part 103 is used for embedding a spring 5;

the outer pipe 11 of the thread groove 102 is sleeved on the mandrel 1, the spring 5 is connected with the inner wall of the outer pipe 11 to form a thread, and one end of the outer pipe 11 is embedded into the clamping jaw 4 extending out of the second sleeve 3.

The thread grooves 102 are arranged at equal intervals; the threaded portion 103 has an end head 104 at an end opposite to the holding portion 101.

Example 2: a processing jig for high-precision welding of medical instruments is used for processing a threaded pipe 10, wherein the threaded pipe 10 comprises an outer pipe 11 and threads positioned on the inner wall of the outer pipe 11;

The end of the thread part 103 opposite to the clamping part 101 is provided with an end head part 104; the spring 5 is connected to the inner wall of the outer tube 11 by laser welding.

When the processing jig for high-precision welding of the medical instrument is adopted, the spring is connected to the inner wall of the outer pipe, the purpose of processing threads on the thin and soft pipe wall is achieved, processing is facilitated, the outer pipe cannot be damaged, the processing precision can be guaranteed, and good consistency of the thread pitch of internal threads or the like is guaranteed.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a high-accuracy welding of medical instrument is with processing tool which characterized in that: the method is used for machining a threaded pipe (10), wherein the threaded pipe (10) comprises an outer pipe (11) and threads located on the inner wall of the outer pipe (11);

the processing jig comprises a mandrel (1), a first sleeve (2), a second sleeve (3) and a clamping jaw (4), wherein the first sleeve (2) and the second sleeve (3) are sequentially sleeved on the clamping jaw (4), and one end of the clamping jaw (4) extends out of the second sleeve (3);

the mandrel (1) further comprises a clamping part (101) and a threaded part (103) with a threaded groove (102) continuously, the clamping part (101) is embedded into the clamping jaw (4), and the threaded groove (102) of the threaded part (103) is used for embedding a spring (5);

an outer pipe (11) of the thread groove (102) is sleeved on the mandrel (1), the spring (5) is connected with the inner wall of the outer pipe (11) to form a thread, and one end of the outer pipe (11) is embedded into the clamping jaw (4) extending out of the second sleeve (3).

2. The processing jig for high-precision welding of medical instruments according to claim 1, characterized in that: the thread grooves (102) are arranged at equal intervals.

3. The processing jig for high-precision welding of medical instruments according to claim 1, characterized in that: one end of the threaded part (103), which is opposite to the clamping part (101), is provided with an end head part (104).

4. The processing jig for high-precision welding of medical instruments according to claim 1, characterized in that: the spring (5) is connected with the inner wall of the outer tube (11) through laser welding.