CN209518917U - A kind of Kirschner wire and its mating special vice convenient for fixing with extracting - Google Patents

Abstract

The utility model provides a kind of convenient for fixed Kirschner wire and its mating special vice with extraction, its end outer wall is provided with external screw thread, it is correspondingly arranged on locking cap, there is cylindrical depression thereon, internal screw thread corresponding with external screw thread on the outer wall of Kirschner wire end is provided on the inner wall of recess, locking cap can rotate the end be inserted in and be fixed on the Kirschner wire in this way, the end of Kirschner wire is additionally provided with perforative pulled-out holes, additionally include the mating special vice of the Kirschner wire of extraction, identical fixed column is provided on the leading inside face of upper grip head and lower pliers head, fixed column, which can correspond to, to be inserted into the pulled-out holes of Kirschner wire end, when carrying out Kirschner wire extraction operation, fixed column correspondence is inserted into the pulled-out holes of Kirschner wire end, it is mutually compressed between fixed column and reaches stable, the mating special vice can firmly be dragged, Kirschner wire can then be extracted.

Description

A kind of Kirschner wire and its mating special vice convenient for fixing with extracting

Technical field

The utility model relates to medical instruments field more particularly to a kind of Kirschner wires convenient for fixed with extraction and its mating Special vice.

Background technique

Kirschner wire is a kind of common internal fixation material of orthopaedics, little for fixing short and small fracture or avulsion fracture iso-stress Fracture fixation, be also frequently used in bone surgery in the fixation of interim sclerite, former specification is generally fixed to 20 centimeters Left and right, diameter have different several specifications between 0.5-2 millimeters, and due to being widely applied, the maximum gauge of Kirschner wire gradually increases 4 millimeters of uses with exterior fixing rack are added to, outer fixed pinning is cooperated to fix the biggish bone such as pelvic fracture, fracture of calcaneus Folding.

When carrying out Kirschner wire fixation operation, usually its tail end cannot preferably be handled, Kirschner wire is being tufted into After in bone, exposes extracutaneous tail end and need to carry out 180 degree bending process, the process of processing relatively test doctor is horizontal, right It is often bad to trail processing to will cause patient wound's infection for new hand doctor, it influences to restore, and kirschner wire surface light It is sliding, it needs to expose wound again when carrying out postoperative extraction, so that Kirschner wire tail end exposes, extraction tonger is allowed to have enough stress Point can further result in patient pain in this way, and extraction pincers of holding with a firm grip are needed when extracting so that binding clip firmly low pressure in Kirschner wire End could generate enough frictional force in this way to provide withdrawal force, will affect force when doctor extracts in this way, can not control power Degree be easy to cause Kirschner wire bending inclination, causes patient pain, influence to restore.

Utility model content

The purpose of the utility model is to provide a kind of convenient for fixed Kirschner wire and its mating special vice with extraction, tail end Processing can be conducive to later period extraction, and mating special vice can more easily extract fixation Kel's needle, improve procedure efficiency, Mitigate patient suffering.

To achieve the goals above, the utility model adopts the following technical solution:

A kind of Kirschner wire and its mating special vice convenient for fixing with extracting, including Kirschner wire, locking cap, the Kirschner wire End be cylinder, the end outer wall of the Kirschner wire is provided with external screw thread, is provided on the locking cap cylindrical Recess, the internal diameter of the recess is identical as the outer diameter of the Kirschner wire end, the inner wall of the cylindrical depression on the locking cap On be provided with internal screw thread corresponding with external screw thread on the outer wall of Kirschner wire end, it is since external screw thread is corresponding with internal screw thread, then described Locking cap can rotate the end be inserted in and be fixed on the Kirschner wire, and the end of the Kirschner wire is additionally provided with perforative extraction Hole, the pulled-out holes is perforative cylindrical shape, and the central axis of the pulled-out holes and the central axis of Kirschner wire mutually hang down Directly, Kirschner wire is anchored into for fixed at patients with fractures position, needs to extract Kirschner wire after patient restores, and is set at its end The pulled-out holes set extracts Kirschner wire convenient for tool insertion, in use locking cap by the covering of the end of Kirschner wire and by its The pulled-out holes of end covers, and avoids being interfered, while locking cap has biggish outside area with respect to the end of Kirschner wire, increases Add the contact area with hammer, is fixed in bone convenient for Kirschner wire by hammering.

Further, the fascia edge for being equipped with recess one end is provided with a circle overlap on the locking cap, by kirschner One circle overlap of locking cap fascia edge can prevent the end of Kirschner wire from being further absorbed in when needle is fixed in bone, be convenient for Later period extracts.

Further, be provided with rubber mat on the interior the inside being recessed on the locking cap, by locking cap rotation be locked gram When family name needle end, rubber mat provides certain deformation range, is conducive to locking cap and progressivelyes reach fixation.

The utility model further includes above-mentioned convenient for the fixed mating special vice with Kirschner wire that is extracting, including upper plier handle is under Clamp handle and upper grip head and lower pliers head, the upper plier handle and lower plier handle and upper grip head and lower pliers head are intersected phase by fixed rotating shaft Even, the upper plier handle and lower plier handle are in the same side, and the upper grip head and lower pliers head are also at the same side, and the upper plier handle is under Clamp handle, which is mutually drawn close, can drive the upper grip head mutually to draw close with lower pliers head, then pressing upper plier handle and lower plier handle can make Binding clip and lower pliers head, which are formed, clamps pressure effect, is provided with identical fixed column on the leading inside face of the upper grip head and lower pliers head, The fixed column is cylindrical shape, and the outer diameter of the fixed column is equal to the internal diameter of Kirschner wire end pulled-out holes, the fixed column energy Enough correspondences are inserted into the pulled-out holes of Kirschner wire end, when carrying out Kirschner wire extraction operation, pass through the pincers of upper grip head and lower pliers head Fixed column correspondence is inserted into the pulled-out holes of Kirschner wire end, mutually compresses between fixed column and reach stable, can use by press operation Power drags the mating special vice, then can extract Kirschner wire.

Further, the vertical cross-section of the upper surface of the lower end surface and lower pliers head of the upper grip head is arc shape, with kirschner Needle end curved profile is consistent, preferably wraps up the end of Kirschner wire when carrying out pincers press operation convenient for upper grip head and lower pliers head, So that the end of Kirschner wire is firm by pressure holding, convenient for extracting.

Detailed description of the invention

Fig. 1 is the stereoscopic schematic diagram and partial enlargement diagram of Kirschner wire in the utility model.

Fig. 2 is the side, sectional view of Kirschner wire terminal position in the utility model.

Fig. 3 is the schematic side view of mating special vice in the utility model.

Fig. 4 is the position mating special vice A-A vertical cross-section schematic diagram in the utility model.

Specific embodiment

Specific embodiment of the present invention is described in detail below in conjunction with attached drawing.

A kind of Kirschner wire and its mating special vice convenient for fixing with extracting, as shown in Figure 1, including Kirschner wire 1, locking cap 2, the end of the Kirschner wire 1 is cylinder, and the end outer wall of the Kirschner wire 1 is provided with external screw thread 11, the locking cap 2 On be provided with cylindrical recess 21, the internal diameter of the recess 21 is identical as the outer diameter of 1 end of Kirschner wire, the locking cap Internal screw thread 22 corresponding with external screw thread 11 on 1 end outer wall of Kirschner wire is provided on the inner wall of cylindrical depression 21 on 2, due to External screw thread 11 is corresponding with internal screw thread 22, then the locking cap 2 can rotate the end be inserted in and be fixed on the Kirschner wire 1, institute The end for stating Kirschner wire 1 is additionally provided with perforative pulled-out holes 12, and the pulled-out holes 12 is perforative cylindrical shape, and described pulls out Portal 12 central axis and Kirschner wire 1 central axis it is perpendicular, as shown in Fig. 2, Kirschner wire 1 for fixation anchor into patient Fracture site, the pulled-out holes 12 for needing to extract Kirschner wire 1, and being arranged at its end after patient restores will convenient for tool insertion Kirschner wire 1 is extracted, and the end of Kirschner wire 1 is covered and covers the pulled-out holes of its end 12 by locking cap 2 in use, is kept away Exempt to be interfered, while locking cap 2 has biggish outside area with respect to the end of Kirschner wire 1, increases the contact surface with hammer Product is fixed in bone convenient for Kirschner wire 1 by hammering.

Further, the fascia edge for being equipped with 21 one end of recess is provided with a circle overlap 23 on the locking cap 2, such as schemes Shown in 1 and Fig. 2, when Kirschner wire 1 to be fixed in bone, a circle overlap 23 of 2 fascia edge of locking cap can prevent Kirschner wire 1 end is further absorbed in, and is extracted convenient for the later period.

Further, it is provided with rubber mat 24 on the interior the inside of recess 21 on the locking cap 2, as shown in Fig. 2, that will fix The rotation of cap 2 is locked at 1 end of Kirschner wire, and rubber mat 24 provides certain deformation range, is conducive to locking cap 2 and progressivelyes reach admittedly It is fixed.

The utility model further includes above-mentioned convenient for the fixed mating special vice with Kirschner wire that is extracting, as shown in figure 3, including Upper plier handle 31 and lower plier handle 32 and upper grip head 41 and lower pliers head 42, the upper plier handle 31 and lower plier handle 32 and upper grip head 41 and lower pincers First 42 are intersected connected by fixed rotating shaft 5, and the upper plier handle 31 and lower plier handle 32 are in the same side, the upper grip head 41 with Lower pliers head 42 is also at the same side, and the upper plier handle 31 is mutually drawn close with lower plier handle 32 can drive the upper grip head 41 and lower pincers First 42 mutually draw close, then pressing upper plier handle 31 and lower plier handle 32 can make upper grip head 41 and lower pliers head 42 form pincers pressure effect, Identical fixed column 43 is provided on the upper grip head 41 and the leading inside face of lower pliers head 42, the fixed column 43 is cylinder Shape, the outer diameter of the fixed column 43 are equal to the internal diameter of 1 end pulled-out holes 12 of Kirschner wire, and the fixed column 43, which can correspond to, to be inserted into In 1 end pulled-out holes 12 of Kirschner wire, when carrying out Kirschner wire extraction operation, is pressed and grasped by the pincers of upper grip head 41 and lower pliers head 42 Make, the correspondence of fixed column 43 is inserted into the pulled-out holes 12 of Kirschner wire end, is mutually compressed between fixed column 43 and reaches stable, it can The mating special vice is firmly dragged, then Kirschner wire can be extracted.

Further, the vertical cross-section of the upper surface of the lower end surface and lower pliers head 42 of the upper grip head 41 is arc shape, such as It is consistent with 1 end curved profile of Kirschner wire shown in Fig. 4 sectional view, when carrying out pincers press operation convenient for upper grip head 41 and lower pliers head 42 Preferably the end of Kirschner wire 1 is wrapped up, so that the end of Kirschner wire 1 is firm by pressure holding, convenient for extracting.

Claims (5)

1. a kind of convenient for the fixed Kirschner wire with extraction, it is characterised in that: including Kirschner wire (1), locking cap (2), the kirschner The end of needle (1) is cylinder, and the end outer wall of the Kirschner wire (1) is provided with external screw thread (11), on the locking cap (2) It is provided with cylindrical recess (21), the internal diameter of the recess (21) is identical as the outer diameter of the Kirschner wire (1) end, described solid Determine to be provided on the inner wall of the cylindrical depression (21) on cap (2) corresponding with external screw thread (11) on the outer wall of Kirschner wire (1) end Internal screw thread (22), the locking cap (2) can rotate the end be inserted in and be fixed on the Kirschner wire (1), the Kirschner wire (1) End is additionally provided with perforative pulled-out holes (12), and the pulled-out holes (12) is perforative cylindrical shape, and the pulled-out holes (12) central axis and the central axis of Kirschner wire (1) are perpendicular.

2. it is according to claim 1 convenient for fixed with Kirschner wire that is extracting, it is characterised in that: on the locking cap (2) Fascia edge equipped with recess (21) one end is provided with a circle overlap (23).

3. according to claim 2 convenient for the fixed Kirschner wire with extraction, it is characterised in that: locking cap (2) fovea superior It falls on the interior the inside of (21) and is provided with rubber mat (24).

4. a kind of of any of claims 1-3 convenient for the fixed mating special vice with Kirschner wire that is extracting, feature It is: including upper plier handle (31) and lower plier handle (32) and upper grip head (41) and lower pliers head (42), the upper plier handle (31) and lower pincers Handle (32) and upper grip head (41), which are intersected with lower pliers head (42) by fixed rotating shaft (5), to be connected, and the upper plier handle (31) is under Clamp handle (32) is in the same side, and the upper grip head (41) and lower pliers head (42) are also at the same side, and the upper plier handle (31) is under Clamp handle (32), which is mutually drawn close, to be able to drive the upper grip head (41) and mutually draws close with lower pliers head (42), and the upper grip head (41) is under Identical fixed column (43) is provided on the leading inside face of binding clip (42), the fixed column (43) is cylindrical shape, described solid The outer diameter of fixed column (43) is equal to the internal diameter of Kirschner wire (1) end pulled-out holes (12), and the fixed column (43), which can correspond to, to be inserted into In Kirschner wire (1) end pulled-out holes (12).

5. according to claim 4 convenient for the fixed mating special vice with Kirschner wire that is extracting, it is characterised in that: on described The vertical cross-section of the upper surface of the lower end surface and lower pliers head (42) of binding clip (41) is arc shape, with Kirschner wire (1) end arc wheel It is wide consistent.