CN211804852U

CN211804852U - Processing jig for surgical instrument sleeve

Info

Publication number: CN211804852U
Application number: CN201921983803.8U
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 of a surgical instrument sleeve, which is used for processing a screwed pipe, wherein the screwed pipe comprises an outer pipe and a thread 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 threads, and one end of the outer pipe is embedded into the chuck extending out of the second sleeve. The utility model discloses can not make the nail in the screwed pipe drop in advance, can not make the nail throw away the card in the screw when needs drop yet, guarantee the precision of surgical equipment to the nail direction, provide the guarantee for the success of operation.

Description

Processing jig for surgical instrument sleeve

Technical Field

The utility model relates to a surgical instruments sheathed tube 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, the nail needs to be screwed out of an operation gun provided with a plurality of nails to be driven into a human body, in order to ensure that the nail smoothly enters a designated position, the precision of a sleeve for placing the nail in the operation gun is required to be very high, and because the nail and the sleeve are fixed in the sleeve in a thread matching mode, the thread pitch inside the sleeve is required to be consistent, but because the pipe wall of the sleeve is thin, an internal thread with very high precision cannot be processed, the operation is seriously influenced, and therefore, how to develop the processing device with the high-precision internal thread sleeve becomes the research direction of technicians in the field.

Disclosure of Invention

The utility model aims at providing a sheathed tube processing tool of surgical instruments, this sheathed tube processing tool of surgical instruments can not make the intraductal nail of screw drop in advance, can not make the nail throw away the card in the screw in need drop yet, guarantees the precision of surgical equipment to the nail direction, provides the guarantee for the success of operation.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a processing jig for a surgical instrument sleeve 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;

a strip-shaped groove is formed in the mandrel and located at the joint of the clamping portion and the threaded portion, the groove is arranged along the axial direction of the mandrel, and one end of the groove penetrates through a first thread groove close to the clamping portion.

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.

4. In the above scheme, the ratio of the depth of the groove to the diameter of the mandrel is 1: 3 to 6.

5. In the above scheme, one end of the clamping jaw for clamping the outer tube is provided with a notch corresponding to the groove.

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

1. the utility model discloses surgical instruments sheathed tube processing tool, it with spring coupling on the outer tube inner wall, realized the purpose of processing 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.

2. The utility model discloses surgical instruments sheathed tube processing tool, its spindle just is located the junction of clamping part and screw thread portion and opens there is a bar recess, this recess sets up along the axial direction of dabber, and this recess one end runs through the first thread groove that is close to the clamping part, the setting of recess, provide the stop face in week for the spring end face when cutting off the thread groove, thereby make to add man-hour each time, the position of spring at the spindle is identical completely, and then make the screw thread that processing obtained have good uniformity, and further, can not make the nail in the thread tube drop in advance, can not make the nail throw away the card in the screw thread when needs drop yet, guarantee the precision of surgical equipment to the nail direction, provide the guarantee for the success of operation.

Drawings

FIG. 1 is a schematic structural view of a processing jig for a casing of a surgical instrument according to the present invention;

FIG. 2 is a schematic view of a partial structure of a processing jig for a casing of a surgical instrument according to the present invention;

FIG. 3 is a schematic view of the structure of the mandrel of the processing jig for the sleeve of the surgical instrument of the present invention;

fig. 4 is a sectional view of the local structure of the threaded pipe of the processing jig for the sleeve of the surgical instrument of the present invention.

In the above drawings: in the above drawings: 1. a mandrel; 101. a clamping portion; 102. a thread groove; 103. a threaded portion; 104. an end portion; 105. a groove; 2. a first sleeve; 3. a second sleeve; 4. a clamping jaw; 401. a notch; 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 of a surgical instrument sleeve 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 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 area of the clamping jaws 4 located in the first sleeve 2 is used for clamping the mandrel 1, and the area of the clamping jaws 4 extending from the second sleeve 3 is used for clamping the outer pipe 11 of the threaded pipe 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;

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

a strip-shaped groove 105 is formed on the mandrel 1 at the joint of the clamping portion 101 and the threaded portion 103, the groove 105 is arranged along the axial direction of the mandrel 1, and one end of the groove 105 penetrates through the first thread groove 102 close to the clamping portion 101.

The thread grooves 102 are arranged at equal intervals; 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. The ratio of the depth of the groove 105 to the diameter of the mandrel 1 is 1: 3.

example 2: a processing jig of a surgical instrument sleeve 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 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 area of the clamping jaws 4 located in the first sleeve 2 is used for clamping the mandrel 1, and the area of the clamping jaws 4 extending from the second sleeve 3 is used for clamping the outer pipe 11 of the threaded pipe 10;

The end of the thread part 103 opposite to the clamping part 101 is provided with an end head part 104; the ratio of the depth of the groove 105 to the diameter of the mandrel 1 is 1: 6; the end of the clamping jaw 4 for clamping the outer tube 11 is provided with a notch 401 corresponding to the groove 105.

When the processing jig for the surgical instrument sleeve is adopted, the spring is connected to the inner wall of the outer tube, so that the purpose of processing threads on the thin and soft tube wall is realized, the processing is convenient, the outer tube is not damaged, the processing precision can be ensured, and the thread pitch of internal threads and the like are ensured to have good consistency;

in addition, the setting of its recess provides the stop face in circumference for the spring end face when cutting off the thread groove, thereby make processing each time, the position of spring at the dabber is identical completely, and then make the screw thread that processing obtained have good uniformity, and is further, make the intraductal nail of screw neither can drop in advance, also can not make the nail throw away the card in the screw thread when needs drop, guarantee the precision of surgical equipment to the nail direction, provide the guarantee for the success of operation.

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 surgical instruments sheathed tube 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 a clamping jaw (4) extending out of the second sleeve (3);

a strip-shaped groove (105) is formed in the mandrel (1) and located at the joint of the clamping portion (101) and the threaded portion (103), the groove (105) is arranged along the axial direction of the mandrel (1), and one end of the groove (105) penetrates through a first thread groove (102) close to the clamping portion (101).

2. The processing jig of the surgical instrument sleeve according to claim 1, characterized in that: the thread grooves (102) are arranged at equal intervals.

3. The processing jig of the surgical instrument sleeve 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 of the surgical instrument sleeve according to claim 1, characterized in that: the spring (5) is connected with the inner wall of the outer tube (11) through laser welding.

5. The processing jig of the surgical instrument sleeve according to claim 1, characterized in that: the ratio of the depth of the groove (105) to the diameter of the mandrel (1) is 1: 3 to 6.

6. The processing jig of the surgical instrument sleeve according to claim 1, characterized in that: one end of the clamping jaw (4) used for clamping the outer tube (11) is provided with a notch (401) corresponding to the groove (105).