CN215937633U - Kirschner wire fixing and guiding device for metacarpal-phalangeal fracture reduction - Google Patents
Kirschner wire fixing and guiding device for metacarpal-phalangeal fracture reduction Download PDFInfo
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- CN215937633U CN215937633U CN202122393374.2U CN202122393374U CN215937633U CN 215937633 U CN215937633 U CN 215937633U CN 202122393374 U CN202122393374 U CN 202122393374U CN 215937633 U CN215937633 U CN 215937633U
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- kirschner wire
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Abstract
The utility model discloses a kirschner wire fixing and guiding device for metacarpal-phalangeal fracture reduction. The method comprises the following steps: the center of the outer sleeve is provided with an axial first through hole; the inner sleeve is axially and movably arranged in the first through hole, the length of the inner sleeve is greater than that of the outer sleeve, and a second through hole for the Kirschner wire to pass through is formed in the center of the inner sleeve; the upper end of the connecting rod is arranged at the lower part of the outer sleeve, the lower part of the connecting rod extends downwards, the lower end of the connecting rod is connected with a lower pressing block, and the lower pressing block is opposite to the lower end face of the inner sleeve; a first handle disposed at an upper portion of the outer sleeve; the second handle is arranged at the upper end of the inner sleeve; the periphery of the inner sleeve is matched with the first through hole, and the second through hole is matched with the periphery of the Kirschner wire. The utility model has the beneficial effects that: the outer sleeve and the inner sleeve are arranged, and the kirschner wire can be guided in the hole rotating process of the kirschner wire.
Description
Technical Field
The utility model relates to the field of medical instruments, in particular to a kirschner wire fixing and guiding device for metacarpal-phalangeal fracture reduction.
Background
The fracture refers to a disease of partial or complete fracture of bone due to trauma or pathology, when treating fracture, the broken end of the displaced bone after fracture is usually recovered to normal or close to the original normal position, after fracture reduction, because it is unstable, especially the fracture of metacarpophalangeal bone and metatarsophalangeal bone, its incidence is high, fracture types are various, the fracture block is small, it is easy to be displaced, therefore it should be fixed on the satisfied position by different methods, and the fixation method includes external fixation and internal fixation.
The Kirschner wire fixation is a common internal fixation method, and generally adopts the Kirschner wire fixation for fractures which are unstable but can not adopt external fixation or steel plate screw internal fixation, and has better clinical Kirschner wire fixation effect for short bones, irregular bones, adjacent joint fracture fixation and trans-joint fixation.
When the Kirschner wire is fixed, one end of the Kirschner wire is required to be installed on an electric drill, then the electric drill is started to drive the Kirschner wire into a bone to be fixed, but the Kirschner wire is difficult to hold when accurately driven according to a preset angle and position, especially, the fracture of the joint part close to the metacarpophalangeal joints has irregular shape and fine anatomical structure, when the driving angle and the driving position are not accurate, needs to pull out the kirschner wire and drive in again, often needs to drive in for a plurality of times in one operation, invisibly aggravates the side injury, further destroys the blood supply, prolongs the operation time, and can explode the bone block for the second time due to the small bone fracture block, therefore, only one time of opportunity is available for implantation operation, meanwhile, the prior operation device is divided into two types of reduction use and guiding use, because the bone block is smaller and the operation space is limited, the two operations can not be simultaneously satisfied, and the poor resetting or poor guiding is often caused to further influence the treatment effect.
Therefore, a device which can extrude and maintain the fracture end to reset and simultaneously has the kirschner wire for guiding in the operation is needed, thereby effectively improving the success rate of the kirschner wire fixing operation, being convenient for the operation of the operator and reducing the operation pain of the patient.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a kirschner wire fixing and guiding device for metacarpal-phalangeal fracture reduction, which is provided with an outer sleeve and an inner sleeve and can guide a kirschner wire in a hole rotating process of the kirschner wire.
In order to achieve the purpose, the utility model adopts the following technical scheme that:
the center of the outer sleeve is provided with an axial first through hole;
the inner sleeve is axially and movably arranged in the first through hole, the length of the inner sleeve is greater than that of the outer sleeve, and a second through hole for the Kirschner wire to pass through is formed in the center of the inner sleeve;
the upper end of the connecting rod is arranged at the lower part of the outer sleeve, the lower part of the connecting rod extends downwards, the lower end of the connecting rod is connected with a lower pressing block, and the lower pressing block is opposite to the lower end face of the inner sleeve;
a first handle disposed at an upper portion of the outer sleeve; and
the second handle is arranged at the upper end of the inner sleeve;
the periphery of the inner sleeve is matched with the first through hole, and the second through hole is matched with the periphery of the Kirschner wire.
Preferably, an axial limiting sliding groove and an axial limiting bulge are respectively arranged on the inner wall of the first through hole and the outer peripheral wall of the inner sleeve.
Preferably, the first handle is an S-shaped crossbar.
Preferably, the upper end of the inner sleeve is provided with a limit ring block, and the outer diameter of the limit ring block is equal to that of the outer sleeve.
Preferably, tooth structures for increasing the clamping force are respectively arranged on the upper end surface of the lower pressing block and the lower end surface of the inner sleeve.
Preferably, the lower portion of the connecting rod is in an outwardly-extending arc-shaped structure.
Preferably, a through hole through which the k-wire is inserted is provided in a position of the lower press block opposite to the second through hole.
The beneficial effects of utility model are that: the outer sleeve and the inner sleeve are arranged, and the Kirschner wire can be guided in the hole rotating process of the Kirschner wire; the fracture part can be clamped by matching the lower pressing block with the inner sleeve.
Drawings
Fig. 1 is a perspective view of a kirschner wire fixing and guiding device for metacarpophalangeal fracture reduction.
Fig. 2 is an exploded view of a kirschner wire fixing and guiding device for metacarpophalangeal fracture reduction.
Fig. 3 is a schematic view of an outer sleeve according to the present invention.
Fig. 4 is a schematic view of an inner sleeve in the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the utility model by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1 to 4, in one implementation form of the present invention, to achieve the above object, the present invention adopts the following technical solutions, including:
the outer sleeve 110 is a tubular structure made of a metal material, and an axial first through hole 111 is formed in the center of the outer sleeve 110. Preferably, the outer sleeve 110 is made of a stainless steel material. More preferably, an axial stopper slide groove 112 is provided on an inner wall of the first through hole 111.
The inner sleeve 120 is a tubular structure made of a metallic material. The inner sleeve 120 is axially movably disposed in the first through hole 111, the length of the inner sleeve 120 is greater than that of the outer sleeve 110, and a second through hole 121 through which the kirschner wire axially passes is disposed in the center of the inner sleeve 120. Preferably, the inner sleeve 120 is made of stainless steel. More preferably, an axial stopper protrusion 122 is provided on the outer peripheral wall of the inner tube 120. The limiting protrusion 122 is matched with the limiting sliding groove 112.
The link 130 is a rod-shaped structure made of a metal material. The upper end of the connecting rod 130 is disposed at the lower part of the outer sleeve 130, the lower part of the connecting rod 130 extends downward, the lower end of the connecting rod 130 is connected with a lower pressing block 140, and the lower pressing block 140 is opposite to the lower end surface of the inner sleeve 120. Preferably, the connecting rod 130 is made of a stainless steel material. More preferably, the connecting rod 130 is integrally formed with the outer sleeve.
A first handle 150 is disposed on an upper portion of the outer sleeve 110; a second handle 160 is provided at the upper end of the inner sleeve 120. Preferably, first handle 150 is an S-shaped cross-bar. Preferably, the first handle 150 is integrally formed with the outer sleeve 110.
The outer periphery of the inner sleeve 120 is matched with the first through hole 111, and the second through hole 121 is matched with the outer periphery of the kirschner wire.
In use, the index finger is placed below the first curved bend (near the base of the first handle) of the first handle 150, the middle finger is placed above the second curved bend (near the free end of the first handle), and then the thumb of the same hand is placed on the upper end face of the second handle 160 to be pressed relatively, so that the lower pressing block and the inner sleeve are clamped relatively at the fracture site, and the kirschner pin is implanted into the fracture site under the guiding action of the second through hole 121.
In another embodiment, an axial position-limiting sliding groove 112 and a position-limiting protrusion 122 are respectively formed on the inner wall of the first through hole 111 and the outer peripheral wall of the inner sleeve 120 to increase the stability of the device in use.
In another embodiment, the first handle 150 is an S-shaped crossbar. So that the two fingers of the forefinger and the ring finger can be stably clamped.
In another embodiment, a stop ring 123 is disposed at the upper end of the inner sleeve 120, and the outer diameter of the stop ring 123 is equal to the outer diameter of the outer sleeve 110.
In another embodiment, the upper end surface of the lower pressing block 140 and the lower end surface of the inner sleeve are respectively provided with a tooth structure 141 and a tooth structure 124 for increasing the clamping force, so that the axial compression effect is convenient to generate when the fracture is reduced.
In another embodiment, the lower portion of the connecting rod 130 is formed with an outwardly extending arc-shaped structure 131 to facilitate crossing over the distal and proximal ends of the fracture when the metacarpophalangeal bones are reduced.
In another embodiment, a through hole 142 for passing the k-wire is formed in the lower pressing block 140 at a position opposite to the second through hole, so that the guiding and advancing depth of the k-wire can be observed at any time.
In conclusion, the kirschner wire fixing and guiding device 1 for reduction of metacarpophalangeal fracture is provided with the outer sleeve 110 and the inner sleeve 120, and can guide the kirschner wire in the hole rotating process of the kirschner wire; the fracture part can be clamped by the cooperation of the lower pressing block 140 and the inner sleeve 120.
While embodiments of the utility model have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the utility model pertains, and further modifications may readily be made by those skilled in the art, it being understood that the utility model is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (7)
1. The utility model provides a palm phalanx fracture reduction kirschner wire fixed guider which characterized in that includes:
the center of the outer sleeve is provided with an axial first through hole;
the inner sleeve is axially and movably arranged in the first through hole, the length of the inner sleeve is greater than that of the outer sleeve, and a second through hole for the Kirschner wire to pass through is formed in the center of the inner sleeve;
the upper end of the connecting rod is arranged at the lower part of the outer sleeve, the lower part of the connecting rod extends downwards, the lower end of the connecting rod is connected with a lower pressing block, and the lower pressing block is opposite to the lower end face of the inner sleeve;
a first handle disposed at an upper portion of the outer sleeve; and
the second handle is arranged at the upper end of the inner sleeve;
the periphery of the inner sleeve is matched with the first through hole, and the second through hole is matched with the periphery of the Kirschner wire.
2. The metacarpophalangeal fracture reduction kirschner wire fixing guide device according to claim 1, which is characterized in that: and the inner wall of the first through hole and the outer peripheral wall of the inner sleeve are respectively provided with an axial limiting sliding groove and a limiting bulge.
3. The metacarpophalangeal fracture reduction kirschner wire fixing guide device according to claim 1 or 2, which is characterized in that: the first handle is an S-shaped cross rod.
4. The metacarpophalangeal fracture reduction kirschner wire fixing guide device according to claim 3, characterized in that: and the upper end of the inner sleeve is provided with a limit ring block, and the outer diameter of the limit ring block is equal to that of the outer sleeve.
5. The metacarpophalangeal fracture reduction kirschner wire fixing guide device according to claim 3, characterized in that: and the upper end surface of the lower pressing block and the lower end surface of the inner sleeve are respectively provided with a tooth structure for increasing the clamping force.
6. The metacarpophalangeal fracture reduction kirschner wire fixing guide device according to claim 1 or 2, which is characterized in that: the lower part of the connecting rod is of an arc structure which extends outwards.
7. The metacarpophalangeal fracture reduction kirschner wire fixing guide device according to claim 1 or 2, which is characterized in that: and a through hole for the Kirschner wire to pass through is formed in the position, opposite to the second through hole, of the lower pressing block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122393374.2U CN215937633U (en) | 2021-09-30 | 2021-09-30 | Kirschner wire fixing and guiding device for metacarpal-phalangeal fracture reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122393374.2U CN215937633U (en) | 2021-09-30 | 2021-09-30 | Kirschner wire fixing and guiding device for metacarpal-phalangeal fracture reduction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215937633U true CN215937633U (en) | 2022-03-04 |
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ID=80425368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122393374.2U Active CN215937633U (en) | 2021-09-30 | 2021-09-30 | Kirschner wire fixing and guiding device for metacarpal-phalangeal fracture reduction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215937633U (en) |
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2021
- 2021-09-30 CN CN202122393374.2U patent/CN215937633U/en active Active
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