CN220141790U - Elastic intramedullary needle breaker - Google Patents
Elastic intramedullary needle breaker Download PDFInfo
- Publication number
- CN220141790U CN220141790U CN202320133493.0U CN202320133493U CN220141790U CN 220141790 U CN220141790 U CN 220141790U CN 202320133493 U CN202320133493 U CN 202320133493U CN 220141790 U CN220141790 U CN 220141790U
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- CN
- China
- Prior art keywords
- sleeve
- upper handle
- rotary sleeve
- inner rotary
- elastic intramedullary
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- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 206010017076 Fracture Diseases 0.000 description 3
- 208000010392 Bone Fractures Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000035876 healing Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 208000005368 osteomalacia Diseases 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model discloses an elastic intramedullary needle breaker, which comprises an outer fixed tube and an inner rotating sleeve coaxially arranged in the outer fixed tube; the side wall of the outer fixed pipe is fixedly connected with a lower handle; the mouth part of the lower end of the outer fixed pipe is provided with a cutting block; the cutting block is provided with a plurality of cutting holes with different diameters; the bottom of the inner rotary sleeve is in contact with the cutting block, and through holes which are in one-to-one correspondence with the cutting holes on the cutting block are arranged at the bottom of the inner rotary sleeve; the top of the inner rotary sleeve is provided with an upper handle for driving the inner rotary sleeve to rotate unidirectionally. The utility model cuts the elastic intramedullary pin by the relative rotation between the inner rotary sleeve and the cutting block, can set a plurality of cutting holes to correspond to the cutting of a plurality of intramedullary pins, adopts the upper handle to drive the inner rotary sleeve to rotate unidirectionally, has more convenient operation, only needs to heat-treat the cutting block, and reduces the production cost.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to an elastic intramedullary needle breaker.
Background
The elastic intramedullary pin is made of titanium alloy or stainless steel metal, the head is provided with an internal fixation product and a matched instrument which are like sickle-shaped elbows and are specially used for treating the osteomalacia and the long bone fracture of children, and the elastic intramedullary pin is generally used for treating certain fractures of children of proper age clinically along with the continuous development and improvement of the modern medical level. From a biological point of view, periosteal integrity is very important for the healing of fractures in children, and minimally invasive techniques are used according to the current medical level to avoid periosteal damage as much as possible, while allowing for the elasticity of micro-movements is very beneficial for fracture healing.
When the elastic intramedullary pin is implanted, the diameters of the elastic intramedullary pins required by different patients are different, different pin breakers are required for cutting the intramedullary pins with different diameters, and different types of pin breakers are required to be equipped, so that the use cost is high. At present, there are also some needle breakers for different types of intramedullary needles, but the operation is complex and the production cost is high.
Therefore, it is necessary to design an elastic intramedullary pin breaker to solve the above-mentioned problems.
Disclosure of Invention
The utility model aims at overcoming the defects of the prior art and provides an elastic intramedullary needle breaker.
The technical scheme of the utility model is as follows: an elastic intramedullary needle breaker comprises an outer fixed tube and an inner rotating sleeve coaxially arranged in the outer fixed tube; the side wall of the outer fixed pipe is fixedly connected with a lower handle; the mouth part of the lower end of the outer fixed pipe is provided with a cutting block; the cutting block is provided with a plurality of cutting holes with different diameters; the bottom of the inner rotary sleeve is in contact with the cutting block, and through holes which are in one-to-one correspondence with the cutting holes on the cutting block are arranged at the bottom of the inner rotary sleeve; the top of the inner rotary sleeve is provided with an upper handle for driving the inner rotary sleeve to rotate unidirectionally.
The top of the outer fixed pipe is connected with a limit sleeve through threads; the top of the inner rotation sleeve extends out of the top of the limit sleeve, and the inner wall of the limit sleeve and the top of the inner rotation sleeve are limited through steps.
A plurality of holding grooves are circumferentially distributed on the outer wall of the limit sleeve.
The inner end of the upper handle is provided with a mounting hole; the clamping sleeve is rotatably arranged in the mounting hole; the middle part of the clamping sleeve is provided with a positioning hole matched with the top of the inner rotary sleeve; a spring pin which can extend into the mounting hole is arranged in the inner end of the upper handle; a plurality of helical teeth are uniformly distributed on the outer wall of the clamping sleeve along the circumferential direction, and limiting notches matched with the spring pins are formed in each helical tooth.
The inner wall of the mounting hole at the inner end of the upper handle is communicated with a fixing hole along the radial direction; the spring pin is arranged in the fixing hole; the outer wall of the upper handle is provided with a waist-shaped hole communicated with the mounting hole; and a limiting pin for preventing the spring pin from being separated from the mounting hole is arranged in the waist-shaped hole.
The top of the inner rotating sleeve is provided with a positioning part matched with the upper handle; the outer peripheral surface of the positioning part is arranged in a regular hexagon shape; the limiting notch is arranged in a regular hexagon shape matched with the positioning part, and V-shaped grooves are formed in the middle of six faces of the limiting notch.
The number of the cutoff holes is 4, and phi is 1.6mm, phi is 2.6mm, phi is 3.6mm and phi is 4.6mm respectively.
The outer ends of the upper handle and the lower handle are respectively provided with a holding sleeve.
By adopting the technical scheme, the utility model has the following beneficial effects: (1) The utility model cuts the elastic intramedullary pin by the relative rotation between the inner rotary sleeve and the cutting block, can set a plurality of cutting holes to correspond to the cutting of a plurality of intramedullary pins, adopts the upper handle to drive the inner rotary sleeve to rotate unidirectionally, has more convenient operation, only needs to heat-treat the cutting block, and reduces the production cost.
(2) The limiting sleeve is arranged to ensure the mounting stability of the inner fixing sleeve and the shearing stability.
(3) A plurality of holding grooves are circumferentially distributed on the outer wall of the limit sleeve so as to facilitate locking of the limit sleeve.
(4) The clamping sleeve is rotatably connected at the inner end of the upper handle, and the upper handle can only rotate unidirectionally through the cooperation of the spring pin and the clamping sleeve, so that the structure is simple, and the operation is more convenient.
(5) The utility model is provided with the waist-shaped hole and the limiting pin so as to be convenient for installing the spring pin and the clamping sleeve.
(6) The V-shaped grooves are formed in the middle of the six faces of the limiting notch, so that the upper handle and the inner rotating sleeve are connected conveniently, and the position can be found quickly.
(7) The outer ends of the upper handle and the lower handle are respectively provided with a holding sleeve so as to ensure holding stability.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
Fig. 1 is a schematic structural view of the present utility model.
Figure 2 is a schematic view of the structure of the ferrule of the present utility model.
Fig. 3 is a cross-sectional view of the present utility model.
The reference numerals in the drawings are:
the novel plastic handle comprises an outer fixing tube 1, an inner rotating sleeve 2, a lower handle 3, a cutting block 4, an upper handle 5, a limiting sleeve 6, a holding groove 7, a clamping sleeve 8, a positioning hole 9, a spring pin 10, a helical tooth 11, a limiting notch 12, a waist-shaped hole 13, a positioning part 14 and a holding sleeve 15.
Detailed Description
Example 1
Referring to fig. 1 to 3, an elastic intramedullary pin breaker of the present embodiment includes an outer fixed tube 1 and an inner rotating sleeve 2 coaxially disposed within the outer fixed tube 1; the side wall of the outer fixed pipe 1 is fixedly connected with a lower handle 3; a cutting block 4 is arranged at the mouth part of the lower end of the outer fixed pipe 1; the cutting block 4 is provided with a plurality of cutting holes with different diameters; the bottom of the inner rotary sleeve 2 is in contact with the cutting block 4, and through holes which are in one-to-one correspondence with the cutting holes on the cutting block 4 are arranged at the bottom of the inner rotary sleeve 2; the top of the inner rotary sleeve 2 is provided with an upper handle 5 for driving the inner rotary sleeve 2 to rotate unidirectionally.
Further, the top of the outer fixed pipe 1 is connected with a limit sleeve 6 in a threaded manner; the top of the inner rotary sleeve 2 extends out of the top of the limit sleeve 6, and the inner wall of the limit sleeve 6 and the top of the inner rotary sleeve 2 are limited by steps, so that the inner rotary sleeve 2 is prevented from shaking, and the stability of the movement of the inner rotary sleeve is ensured.
Further, a plurality of holding grooves 7 are circumferentially distributed on the outer wall of the limit sleeve 6 so as to facilitate locking of the limit sleeve 6.
Further, the inner end of the upper handle 5 is provided with a mounting hole; the clamping sleeve 8 is rotatably arranged in the mounting hole; the middle part of the clamping sleeve 8 is provided with a positioning hole 9 matched with the top of the inner rotary sleeve 2; a spring pin 10 which can extend into the mounting hole is arranged in the inner end of the upper handle 5; the outer wall of the clamping sleeve 8 is uniformly provided with a plurality of helical teeth 11 along the circumferential direction, and each helical tooth 11 is provided with a limiting notch 12 matched with the spring pin 10, so that the upper handle 5 can only rotate unidirectionally, and the structure is simple and the operation is more convenient.
Further, the inner wall of the mounting hole at the inner end of the upper handle 5 is communicated with a fixing hole along the radial direction; the spring pin 10 is arranged in the fixing hole; the outer wall of the upper handle 5 is provided with a waist-shaped hole 13 communicated with the mounting hole; a limiting pin for preventing the spring pin 10 from being separated from the mounting hole is arranged in the waist-shaped hole 13, so that the clamping sleeve 8 and the spring pin 10 can be mounted conveniently.
Further, a positioning part 14 matched with the upper handle 5 is arranged at the top of the inner rotary sleeve 2; the outer peripheral surface of the positioning portion 14 is provided in a regular hexagonal shape; the limiting notch 12 is arranged to be regular hexagon matched with the positioning part 14, and the middle parts of six faces of the limiting notch 12 are respectively provided with a V-shaped groove, so that the upper handle 5 and the inner rotating sleeve 2 are connected conveniently, and the position can be found quickly.
Further, the number of the cutoff holes is 4, and phi 1.6mm, phi 2.6mm, phi 3.6mm and phi 4.6mm are respectively adopted.
Further, the outer ends of the upper handle 5 and the lower handle 3 are respectively provided with a holding sleeve 15 so as to ensure holding stability.
The elastic intramedullary needle breaker of the embodiment cuts the elastic intramedullary needle through the relative rotation between the inner rotary sleeve 2 and the cutting block, and simultaneously can set a plurality of cutting holes to correspond to the cutting of a plurality of intramedullary needles, and simultaneously adopts the upper handle 5 to drive the inner rotary sleeve 2 to rotate unidirectionally, so that the operation is more convenient, and only the cutting block is required to be subjected to heat treatment, thereby reducing the production cost.
While the foregoing is directed to embodiments of the present utility model, other and further details of the utility model may be had by the present utility model, it should be understood that the foregoing description is merely illustrative of the present utility model and that no limitations are intended to the scope of the utility model, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the utility model.
Claims (8)
1. An elastic intramedullary needle breaker, characterized in that: comprises an outer fixed pipe (1) and an inner rotating sleeve (2) coaxially arranged in the outer fixed pipe (1); the side wall of the outer fixed pipe (1) is fixedly connected with a lower handle (3); the mouth part of the lower end of the outer fixed pipe (1) is provided with a cutting block (4); a plurality of cutoff holes with different diameters are formed in the cutoff block (4); the bottom of the inner rotary sleeve (2) is in contact with the cutting block (4), and through holes which are in one-to-one correspondence with the cutting holes on the cutting block (4) are arranged at the bottom of the inner rotary sleeve (2); the top of the inner rotary sleeve (2) is provided with an upper handle (5) for driving the inner rotary sleeve (2) to rotate unidirectionally.
2. An elastic intramedullary pin breaker according to claim 1, characterized in that: the top of the outer fixed pipe (1) is connected with a limit sleeve (6) through threads; the top of the inner rotation sleeve (2) extends out of the top of the limit sleeve (6), and the inner wall of the limit sleeve (6) and the top of the inner rotation sleeve (2) are limited through steps.
3. An elastic intramedullary pin breaker according to claim 2, characterized in that: a plurality of holding grooves (7) are circumferentially distributed on the outer wall of the limit sleeve (6).
4. An elastic intramedullary pin breaker according to claim 1, characterized in that: the inner end of the upper handle (5) is provided with a mounting hole; a clamping sleeve (8) is rotatably arranged in the mounting hole; a positioning hole (9) matched with the top of the inner rotary sleeve (2) is formed in the middle of the clamping sleeve (8); a spring pin (10) which can extend into the mounting hole is arranged in the inner end of the upper handle (5); a plurality of bevel gears (11) are uniformly distributed on the outer wall of the clamping sleeve (8) along the circumferential direction, and limiting notches (12) matched with the spring pins (10) are formed in each bevel gear (11).
5. An elastic intramedullary pin breaker according to claim 4, wherein: the inner wall of the mounting hole at the inner end of the upper handle (5) is communicated with a fixing hole along the radial direction; the spring pin (10) is arranged in the fixing hole; the outer wall of the upper handle (5) is provided with a waist-shaped hole (13) communicated with the mounting hole; and a limiting pin for preventing the spring pin (10) from being separated from the mounting hole is arranged in the waist-shaped hole (13).
6. An elastic intramedullary pin breaker according to claim 5, wherein: the top of the inner rotary sleeve (2) is provided with a positioning part (14) matched with the upper handle (5); the outer peripheral surface of the positioning part (14) is arranged in a regular hexagon shape; the limiting notch (12) is arranged in a regular hexagon shape matched with the positioning part (14), and V-shaped grooves are formed in the middle of six faces of the limiting notch (12).
7. An elastic intramedullary pin breaker according to claim 1, characterized in that: the number of the cutoff holes is 4, and phi is 1.6mm, phi is 2.6mm, phi is 3.6mm and phi is 4.6mm respectively.
8. An elastic intramedullary pin breaker according to claim 1, characterized in that: the outer ends of the upper handle (5) and the lower handle (3) are respectively provided with a holding sleeve (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320133493.0U CN220141790U (en) | 2023-02-07 | 2023-02-07 | Elastic intramedullary needle breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320133493.0U CN220141790U (en) | 2023-02-07 | 2023-02-07 | Elastic intramedullary needle breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220141790U true CN220141790U (en) | 2023-12-08 |
Family
ID=89017341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320133493.0U Active CN220141790U (en) | 2023-02-07 | 2023-02-07 | Elastic intramedullary needle breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220141790U (en) |
-
2023
- 2023-02-07 CN CN202320133493.0U patent/CN220141790U/en active Active
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