CN215079263U - Combined extension type locking guide sleeve - Google Patents
Combined extension type locking guide sleeve Download PDFInfo
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- CN215079263U CN215079263U CN202120473943.1U CN202120473943U CN215079263U CN 215079263 U CN215079263 U CN 215079263U CN 202120473943 U CN202120473943 U CN 202120473943U CN 215079263 U CN215079263 U CN 215079263U
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Abstract
The application relates to the field of orthopedic internal fixation surgical instruments, in particular to a combined extension type locking guide sleeve, which has the technical scheme that a plurality of locking sleeves are arranged; the locking sleeves are coaxially connected end to end, and two adjacent locking sleeves are detachably connected; a guide hole for a bone drill to pass through is coaxially formed in the locking sleeve; the length of the locking sleeve can be adapted to fat patients or parts with abundant muscle and soft tissue, and the soft tissue can be better protected.
Description
Technical Field
The application relates to the field of orthopedic internal fixation surgical instruments, in particular to a combined extension type locking guide sleeve.
Background
In an orthopedic internal fixation operation, a locking sleeve is required to be screwed into a locking plate threaded hole, a bone drill penetrates through the locking sleeve and then penetrates through cortex on one side or two sides, and then a locking screw is fixed; the locking sleeve can guide the bone drill and protect soft tissues around the bone drill in the process of drilling the bone drill, namely, the bone drill is prevented from damaging the soft tissues; the conventional locking sleeve can satisfy most operations, but when the patient with a fat body or a part with abundant muscle and soft tissue is encountered, the length size of the locking sleeve, namely the guiding length of the bone drill, is smaller than the thickness of the soft tissue, so that the soft tissue cannot be completely protected.
SUMMERY OF THE UTILITY MODEL
In order to make the length of locking sleeve can adapt to the fat patient of size or the abundant position of muscle soft tissue, and then protect the soft tissue better, this application provides a combination extension formula locking guide pin bushing.
The application provides a combination extension formula locking guide pin bushing adopts following technical scheme:
a plurality of combined extension type locking guide sleeves are arranged; the locking sleeves are connected end to end, and two adjacent locking sleeves are detachably connected; the locking sleeve is coaxially provided with a guide hole for a bone drill to pass through.
By adopting the technical scheme, when the patient is thin or the muscle and soft tissue is weak, a single locking sleeve can meet the protection requirement on the soft tissue in a certain depth, and at the moment, one locking sleeve is selected; when the patient is obese or the muscle soft tissue is abundant, the length of a single locking sleeve cannot meet the protection of the muscle soft tissue in a certain depth, and at the moment, a plurality of locking sleeves are sequentially connected end to end. Therefore, the plurality of guide holes can be connected with one another, the protected depth of muscle tissues is further prolonged, and people can select a proper number of locking sleeves according to the depth of soft tissues; therefore, the length of the locking sleeve can be suitable for fat patients or parts with abundant muscle and soft tissue, and the soft tissue is protected better.
Preferably, the outer peripheral surface of one end of the locking sleeve is provided with a thread; and a threaded hole matched with the threads on the outer circumferential surface of the locking sleeve is formed in the other end of the locking sleeve.
By adopting the technical scheme, when two adjacent locking sleeves are required to be connected end to end, one end provided with threads of one locking sleeve is inserted into the threaded hole of the other locking sleeve, and the two locking sleeves are twisted relatively until the threads on the outer peripheral surface are in threaded connection with the threaded hole; the threaded connection is convenient and fast and the connection between the locking sleeves is more reliable.
Preferably, the outer peripheral surface of one end of the locking sleeve, which is provided with the threads, inclines by 10-30 degrees along the direction from the close to the self threaded hole to the close to the axis; the taper of the hole wall of the threaded hole is the same as the taper of the peripheral surface of one end of the locking sleeve provided with the threads.
Through adopting above-mentioned technical scheme, under the certain circumstances of locking sleeve peripheral face size, can increase the section of thick bamboo wall of seting up screw hole position department on the locking sleeve, and then improved the intensity of locking sleeve junction.
Preferably, the circumferential surface of the locking sleeve is provided with a chip groove communicated with the guide hole.
By adopting the technical scheme, some bone fragments can be generated in the process of drilling the bone by the bone drill, and the bone fragments enter the guide hole along the peripheral surface of the drill bit so as to possibly block the guide hole and further hinder the rotation of the bone drill; when bone fragments enter the guide hole, the bone fragments can be discharged from the interior of the locking sleeve along the guide hole and the chip discharge groove, so that the possibility that the guide hole is blocked by the bone fragments is reduced.
Preferably, the flute is provided adjacent to the end of the locking sleeve where the thread is provided.
Through adopting above-mentioned technical scheme, because locking sleeve sets up screwed one end terminal surface and bone butt, and the chip groove is close to locking sleeve's the one end that sets up the screw thread and sets up, enters into the inside bone bits of guiding hole like this and can discharge from locking sleeve more in time, and then has reduced the inside bone bits of guiding hole and has piled up.
Preferably, the groove walls of the flutes are inclined in a direction away from each other in a direction from close to far from the axis of the locking sleeve.
By adopting the technical scheme, when bone chips are to be discharged from the chip groove to the locking sleeve, the groove wall of the chip groove which is obliquely arranged can play a role in guiding the discharge of the bone chips, so that the bone chips can be more smoothly discharged from the chip groove.
Preferably, the locking sleeve is provided with a screwing part on the outer peripheral surface of one end close to the threaded hole, and the cross section of the screwing part along the direction perpendicular to the axis of the locking sleeve is in a quincunx shape, a shape at least containing one straight line or a round shape with a knurled reticulate pattern on the surface.
By adopting the technical scheme, when two locking sleeves need to be installed, the screwing part can be used for assisting people in rotating the locking sleeves, and people can rotate the locking sleeves more conveniently in a labor-saving manner through the screwing part.
In summary, the present application has the following technical effects:
1. by arranging a plurality of locking sleeves which are detachably connected with each other, people can select a proper number of locking sleeves according to the depth of soft tissues; therefore, the length of the locking sleeve can be suitable for fat patients or parts with abundant muscle and soft tissue, and the soft tissue is protected better;
2. through the arrangement of the chip discharge groove, when bone chips enter the guide hole, the bone chips can be discharged from the interior of the locking sleeve along the guide hole and the chip discharge groove, so that the possibility that the guide hole is blocked by the bone chips is reduced.
Drawings
FIG. 1 is an external block diagram of a locking sleeve in an embodiment of the present application;
FIG. 2 is a block diagram of the locking sleeve of an embodiment of the present application as two are connected to each other;
FIG. 3 is a cross-sectional view of a single locking sleeve in an embodiment of the present application.
In the drawings, 1, a locking sleeve; 2. a guide hole; 3. a threaded hole; 4. a chip groove; 5. and a screwing part.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
Referring to fig. 1 and 2, the application provides a combined extension type locking guide sleeve, wherein a plurality of locking sleeves 1 are cylindrical and are detachably connected end to end, and the number of the locking sleeves 1 is selected according to the depth of soft tissue; a guide hole 2 for inserting a bone drill bit is coaxially arranged on the two end faces of the locking sleeve 1; when the patient is thin or the muscle and soft tissue is weak, the single locking sleeve 1 can protect the muscle tissue with shallow depth, and at the moment, one locking sleeve 1 is selected; when the body of a patient is fat or the muscle and soft tissue is thick, the single locking sleeve 1 cannot meet the protection of the deep muscle and soft tissue, at the moment, a proper number of locking sleeves 1 are selected according to the depth of the soft tissue, and the locking sleeves 1 are sequentially connected end to end, so that the plurality of guide holes 2 are connected, the guide length of the bone drill is increased, the protection distance of the soft tissue is increased, and the bone drill is suitable for the thick soft tissue; the length of the locking sleeve 1 can be adapted to the fat patients or the parts with abundant muscle and soft tissue, thereby better protecting the soft tissue.
With reference to fig. 1 and 3, further, the detachable connection between the locking sleeves 1 is a threaded connection; the outer peripheral surface of one end of the locking sleeve 1, which is close to the bone, is provided with threads; a threaded hole 3 matched with threads on the outer peripheral surface of the adjacent locking sleeve 1 is coaxially formed in the other end of the locking sleeve 1; when two adjacent locking sleeves 1 need to be connected, one end provided with threads of one locking sleeve 1 is inserted into a threaded hole 3 in the other locking sleeve 1, then the two locking sleeves 1 are relatively rotated in opposite directions until one end provided with threads of one locking sleeve 1 is in threaded connection with the threaded hole 3 in the other locking sleeve 1, and then the head and the tail of the two locking sleeves are detachably connected; the threaded connection is convenient and fast and enables the connection between two adjacent locking sleeves 1 to be more reliable.
Furthermore, the end, provided with the threads, of the locking sleeve 1 inclines by 10-30 degrees close to the axis along the direction from close to the threaded hole 3 far away from the inside of the locking sleeve 1; the taper of the hole wall of the threaded hole 3 is the same as the taper of the outer peripheral surface of the locking sleeve 1 provided with threads; in this way, when the outer peripheral surface of the end of the locking sleeve 1, at which the threaded hole 3 is opened, has a constant wall thickness, the threaded hole 3 having a constant taper can increase the wall thickness of the wall of the locking sleeve 1, that is, the wall thickness of the locking sleeve 1 becomes gradually thicker in a direction from the end closer to the end away from the end of the locking sleeve 1, at which the thread is provided, thereby increasing the strength of the wall of the locking sleeve 1.
A chip groove 4 is formed in the circumferential surface of the locking sleeve 1, and the chip groove 4 is communicated with the interior of the guide hole 2; during the process of drilling the bone by the bone drill, some bone fragments are generated, enter the inside of the guide hole 2 along the peripheral surface of the bone drill and further possibly block the guide hole 2, so that the rotation of the bone drill in the guide hole 2 is influenced; the chip groove 4 is formed, so that bone chips can be discharged from the interior of the guide hole 2 along the chip groove 4, and the accumulation of the bone chips in the interior of the guide hole 2 is reduced, so that the possibility that the bone drill is stuck by the accumulated bone chips is reduced.
Furthermore, the four groove walls of the chip groove 4 are inclined in the direction from the direction close to the axis of the locking sleeve 1 to the direction away from each other; thus, the bone fragments in the guide hole 2 can be discharged along the inclined groove wall of the chip discharge groove 4, the accumulation of the bone fragments in the chip discharge groove 4 is reduced, and the bone fragments can be discharged from the guide hole 2 more smoothly, that is, the discharge of the bone fragments is guided.
Furthermore, the chip groove 4 is arranged close to the locking sleeve 1, namely close to the bone, namely, one end provided with threads is arranged in the direction; bone fragments entering the interior of the guide hole 2 can thus be discharged from the locking sleeve 1 more promptly, thereby reducing the accumulation of bone fragments in the interior of the guide hole 2.
The circumferential surface of one end of the locking sleeve 1, which is provided with the threaded hole 3, is provided with a screwing part 5 which is convenient for people to rotate the locking sleeve 1, the cross section of the screwing part 5 along the axis of the locking sleeve 1 is in a quincunx shape or in a shape at least containing one straight line, namely an outer square or an outer hexagon and the like, and the screwing part 5 can also be in a cylindrical structure with a knurled pattern on the surface; thus, when people rotate the locking sleeve 1, the outer wall of the screwing part 5 can make people use force to conveniently provide circumferential torque for the locking sleeve 1, and people can more conveniently rotate the locking sleeve 1 through the screwing part 5 with less labor.
To sum up, the application process of this application is: selecting a proper number of locking sleeves 1 according to the thickness of soft tissues of a patient, and sequentially connecting the locking sleeves 1 end to end, namely connecting the threads on the locking sleeve 1 close to the bone with the threaded holes 3 on the locking sleeve 1 relatively far away from the bone to realize threaded connection between the adjacent locking sleeves 1; then, the bone drill is sequentially arranged in the guide holes 2 in the locking sleeves 1, so that the soft tissues around the bone drill are protected; thus, the length of the locking sleeve 1 can be adapted to the fat patients or the parts with abundant muscle and soft tissue, and the soft tissue is protected better.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (7)
1. A combination extension formula locking guide pin bushing which characterized in that: the locking sleeve (1) is provided with a plurality of locking sleeves; the locking sleeves (1) are connected end to end, and two adjacent locking sleeves (1) are detachably connected; a guide hole (2) for a bone drill to pass through is coaxially formed in the locking sleeve (1).
2. A modular elongate locking guide as claimed in claim 1, wherein: the outer peripheral surface of one end of the locking sleeve (1) is provided with threads; and a threaded hole (3) matched with the thread on the outer peripheral surface of the locking sleeve (1) is formed in the other end of the locking sleeve (1).
3. A modular elongate locking guide as claimed in claim 2, wherein: the outer peripheral surface of one end of the locking sleeve (1) provided with the threads inclines by 10-30 degrees along the direction from the close to the far away from the self threaded hole (3) close to the axis; the conicity of the hole wall of the threaded hole (3) is the same as the conicity of the peripheral surface of one end of the locking sleeve (1) provided with threads.
4. A modular elongate locking guide as claimed in claim 1, wherein: the circumferential surface of the locking sleeve (1) is provided with a chip groove (4) communicated with the guide hole (2).
5. A modular elongate locking guide as claimed in claim 1, wherein: the flute (4) is arranged at the end, which is close to the locking sleeve (1), and is provided with a thread.
6. The combination elongate locking guide of claim 4, wherein: the groove walls of the chip grooves (4) are inclined in directions away from each other in the axial direction from the approach to the separation from the locking sleeve (1).
7. A modular elongate locking guide as claimed in claim 5, wherein: the locking sleeve (1) is provided with a screwing part (5) on the outer peripheral surface of one end close to the threaded hole (3), and the cross section of the screwing part (5) along the axis of the locking sleeve (1) is quincunx and at least comprises a straight line shape or a round shape with a knurled reticulate pattern on the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120473943.1U CN215079263U (en) | 2021-03-04 | 2021-03-04 | Combined extension type locking guide sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120473943.1U CN215079263U (en) | 2021-03-04 | 2021-03-04 | Combined extension type locking guide sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215079263U true CN215079263U (en) | 2021-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120473943.1U Active CN215079263U (en) | 2021-03-04 | 2021-03-04 | Combined extension type locking guide sleeve |
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| CN (1) | CN215079263U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115844482A (en) * | 2022-12-17 | 2023-03-28 | 尤尼泰科(重庆)医疗科技有限公司 | Length-adjustable quick-change orthopedic guide |
-
2021
- 2021-03-04 CN CN202120473943.1U patent/CN215079263U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115844482A (en) * | 2022-12-17 | 2023-03-28 | 尤尼泰科(重庆)医疗科技有限公司 | Length-adjustable quick-change orthopedic guide |
| CN115844482B (en) * | 2022-12-17 | 2023-08-29 | 尤尼泰科(重庆)医疗科技有限公司 | Length-adjustable quick-change orthopedic guide |
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